Orange dye mixture for thermal color proofing

Claim 2

An orange dye-donor element for thermal dye transfer comprising a support having thereon a dye layer comprising a mixture of a pink dye and a first and second yellow dye dispersed in a polymeric binder, said pink dye having the formula A: ##STR13## wherein: R 1 , R 2 and R 3 each independently represents a substituted or unsubstituted alkyl group having from 1 to about 10 carbon atoms; a substituted or unsubstituted cycloalkyl group having from about 5 to about 7 carbon atoms; a substituted or unsubstituted allyl group; a substituted or unsubstituted aryl group of from about 6 to about 10 carbon atoms; or a substituted or unsubstituted hetaryl group of from about 5 to about 10 atoms; X represents C(CH 3 ) 2 , S, O or NR 1 ; and Y represents the atoms necessary to complete a 5- or 6-membered ring which may be fused to another ring system; said first yellow dye having the formula E having the structure: ##STR14## wherein: R 8 , R 9 and R 10 each independently represents a substituted or unsubstituted alkyl group of from 1 to about 10 carbon atom; a cycloalkyl group of from about 5 to about 7 carbon atoms; or a substituted or unsubstituted aryl group of from about 6 to about 10 carbon atoms, such as phenyl, naphthyl, p-tolyl, m-chlorophenyl, p-methoxyphenyl, m-bromophenyl, o-tolyl, etc.; or R 8 and R 9 can be joined together to form, along with the nitrogen to which they are attached, a 5-or 6-membered heterocyclic ring, such as a pyrrolidine or morpholine ring; or either or both of R 8 and R 9 can be joined to the carbon atom of the benzene ring at a position ortho to the position of attachment of the anilino nitrogen to form a 5- or 6-membered ring, thus forming a polycyclic system such as 1,2,3,4-tetrahydroquinoline, julolidine,2,3-dihydroindole, or benzomorpholine; R 11 represents a substituted or unsubstituted alkoxy group having from1 to about 10 carbon atoms, such as methoxy, ethoxy, methoxyethoxy or 2-cyanoethoxy; a substituted or unsubstituted aryloxy group having from about 6 to about 10 carbon atoms, such as phenoxy, m-chlorophenoxy, or naphthoxy; NHR 8 ; NR 8 R 9 ; each W independently represents a substituted or unsubstituted alkyl group having from 1 to about 10 carbon atoms; alkoxy having from 1 to about 10 carbon atoms; halogen; or two adjacent W's together represent the atoms necessary to complete a 5- or 6-membered ring, thus forming a fused ring system; and n represents an integer from 0 to 2; said second yellow dye having the formula F or G, said formula F having the structure: ##STR15## wherein: R 12 represents methyl or a substituted or unsubstituted alkoxy group having from 1 to about 10 carbon atoms; a substituted or unsubstituted aryloxy group having from about 6 to about 10 carbon atoms; R 13 represents a substituted or unsubstituted alkyl group of from 1 to about 10 carbon atom; a cycloalkyl group of from about 5 to about 7 carbon atoms; or a substituted or unsubstituted aryl group of from about 6 to about 10 carbon atoms; R 14 and R 15 each independently represents hydrogen or a substituted or unsubstituted alkyl or alkoxy group having from 1 to about 4 carbon atoms; and said formula G having the structure: ##STR16## wherein: R 17 , R 18 and R 19 each independently represents the same groups as R 1 , R 2 and R 3 above; R 16 represents any of the groups for R 17 , R 18 and R 19 or represents the atoms which when taken together with Z forms a 5- or 6-membered ring; Z represents hydrogen; a substituted or unsubstituted alkyl group having from 1 to about 10 carbon atoms; alkoxy; halogen; or represents the atoms which when taken together with R 16 forms a 5- or 6-membered ring; each W independently represents a substituted or unsubstituted alkyl group having from 1 to about 10 carbon atoms; alkoxy having from 1 to about 10 carbon atoms; halogen; or two adjacent W's together represent the atoms necessary to complete a 5- or 6-membered ring, thus forming a fused ring system; and n represents an integer from 0 to 2.

Claim 3

The element of claim 1 wherein said dye-donor element contains an infrared-absorbing dye in said dye layer.

Claim 4

The element of claim 1 wherein in formula A, R 1 is butyl, R 2 is 2-methoxyethyl, R 3 is methyl, X represents C(CH 3 ) 2 and Y is a 6-membered aromatic ring.

Claim 5

The element of claim 1 wherein in formula E, R 8 and R 9 are each ethyl, R 10 is phenyl and R 11 is dimethylamino.

Claim 6

The element of claim 1 wherein in formula F, R 13 is phenyl, R 12 is methyl, R 14 is 3-methoxy and R 15 is 4-methoxy.

Claim 7

The element of claim 1 wherein in formula G, R 16 is benzyl, R 17 is ethyl, R 18 is hydrogen, R 19 is benzyl, Z is hydrogen and n is 0.

Claim 8

A process of forming an orange dye transfer image comprising imagewise-heating an orange dye-donor element comprising a support having thereon a dye layer comprising a mixture of dyes dispersed in a polymeric binder, and transferring a dye image to a dye-receiving element to form said orange dye transfer image, said orange dye-donor element comprising a support having thereon a dye layer comprising a mixture of a pink dye and at least one yellow dye dispersed in a polymeric binder, said pink dye having the formula A: ##STR17## wherein: R 1 , R 2 and R 3 each independently represents a substituted or unsubstituted alkyl group having from 1 to about 10 carbon atoms; a substituted or unsubstituted cycloalkyl group having from about 5 to about 7 carbon atoms; a substituted or unsubstituted allyl group; a substituted or unsubstituted aryl group of from about 6 to about 10 carbon atoms; or a substituted or unsubstituted hetaryl group of from about 5 to about 10 atoms; X represents C(CH 3 ) 2 , S, O or NR 1 ; and Y represents the atoms necessary to complete a 5- or 6-membered ring which may be fused to another ring system; said at least one yellow dye being chosen such that a solid area orange dye transfer image has a hue angle in CIELAB color space of from about 40 to about 70 degrees.

Claim 9

A process of forming an orange dye transfer image comprising imagewise-heating an orange dye-donor element comprising a support having thereon a dye layer comprising a mixture of dyes dispersed in a polymeric binder, and transferring a dye image to a dye-receiving element to form said orange dye transfer image, said orange dye-donor element comprising a support having thereon a dye layer comprising a mixture of a pink dye and at least one yellow dye dispersed in a polymeric binder, said pink dye having the formula A: ##STR17## wherein: R 1 , R 2 and R 3 each independently represents a substituted or unsubstituted alkyl group having from 1 to about 10 carbon atoms; a substituted or unsubstituted cycloalkyl group having from about 5 to about 7 carbon atoms; a substituted or unsubstituted allyl group; a substituted or unsubstituted aryl group of from about 6 to about 10 carbon atoms; or a substituted or unsubstituted hetaryl group of from about 5 to about 10 atoms; X represents C(CH 3 ) 2 , S, O or NR 1 ; and Y represents the atoms necessary to complete a 5- or 6-membered ring which may be fused to another ring system; said at least one yellow dye being chosen such that a solid area orange dye transfer image has a hue angle in CIELAB color space of from about 40 to about 70 degrees.

Claim 10

A process of forming a dye transfer image comprising imagewise-heating an orange dye-donor element comprising a support having thereon a dye layer comprising a mixture of dyes dispersed in a polymeric binder, and transferring a dye image to a dye-receiving element to form said dye transfer image, said orange dye-donor element comprising a support having thereon a dye layer comprising a mixture of a pink dye and a first and second yellow dye dispersed in a polymeric binder, said pink dye having the formula A: ##STR18## wherein: R 1 , R 2 and R 3 each independently represents a substituted or unsubstituted alkyl group having from 1 to about 10 carbon atoms; a substituted or unsubstituted cycloalkyl group having from about 5 to about 7 carbon atoms; a substituted or unsubstituted allyl group; a substituted or unsubstituted aryl group of from about 6 to about 10 carbon atoms; or a substituted or unsubstituted hetaryl group of from about 5 to about 10 atoms; X represents C(CH 3 ) 2 , S, O or NR 1 ; and Y represents the atoms necessary to complete a 5- or 6-membered ring which may be fused to another ring system; said first yellow dye having the formula E having the structure: ##STR19## wherein: R 8 , R 9 and R 10 each independently represents a substituted or unsubstituted alkyl group of from 1 to about 10 carbon atom; a cycloalkyl group of from about 5 to about 7 carbon atoms; or a substituted or unsubstituted aryl group of from about 6 to about 10 carbon atoms, such as phenyl, naphthyl, p-tolyl, m-chlorophenyl, p-methoxyphenyl, m-bromophenyl, o-tolyl, etc.; or R 8 and R 9 can be joined together to form, along with the nitrogen to which they are attached, a 5-or 6-membered heterocyclic ring, such as a pyrrolidine or morpholine ring; or either or both of R 8 and R 9 can be joined to the carbon atom of the benzene ring at a position ortho to the position of attachment of the anilino nitrogen to form a 5- or 6-membered ring, thus forming a polycyclic system such as 1,2,3,4-tetrahydroquinoline, julolidine,2,3-dihydroindole, or benzomorpholine; R 11 represents a substituted or unsubstituted alkoxy group having from1 to about 10 carbon atoms, such as methoxy, ethoxy, methoxyethoxy or 2-cyanoethoxy; a substituted or unsubstituted aryloxy group having from about 6 to about 10 carbon atoms, such as phenoxy, m-chlorophenoxy, or naphthoxy; NHR 8 ; NR 8 R 9 ; each W independently represents a substituted or unsubstituted alkyl group having from 1 to about 10 carbon atoms; alkoxy having from 1 to about 10 carbon atoms; halogen; or two adjacent W's together represent the atoms necessary to complete a 5- or 6-membered ring, thus forming a fused ring system; and n represents an integer from 0 to 2; said second yellow dye having the formula F or G, said formula F having the structure: ##STR20## wherein: R 12 represents methyl or a substituted or unsubstituted alkoxy group having from 1 to about 10 carbon atoms; a substituted or unsubstituted aryloxy group having from about 6 to about 10 carbon atoms; R 13 represents a substituted or unsubstituted alkyl group of from 1 to about 10 carbon atom; a cycloalkyl group of from about 5 to about 7 carbon atoms; or a substituted or unsubstituted aryl group of from about 6 to about 10 carbon atoms; R 14 and R 15 each independently represents hydrogen or a substituted or unsubstituted alkyl or alkoxy group having from 1 to about 4 carbon atoms; and said formula G having the structure: ##STR21## wherein: R 17 , R 18 and R 19 each independently represents the same groups as R 1 , R 2 and R 3 above; R 16 represents any of the groups for R 17 , R 18 and R 19 or represents the atoms which when taken together with Z forms a 5- or 6-membered ring; Z represents hydrogen; a substituted or unsubstituted alkyl group having from 1 to about 10 carbon atoms; alkoxy; halogen; or represents the atoms which when taken together with R 16 forms a 5- or 6-membered ring; each W independently represents a substituted or unsubstituted alkyl group having from 1 to about 10 carbon atoms; alkoxy having from 1 to about 10 carbon atoms; halogen; or two adjacent W's together represent the atoms necessary to complete a 5- or 6-membered ring, thus forming a fused ring system; and n represents an integer from 0 to 2.

Claim 11

A process of forming a dye transfer image comprising imagewise-heating an orange dye-donor element comprising a support having thereon a dye layer comprising a mixture of dyes dispersed in a polymeric binder, and transferring a dye image to a dye-receiving element to form said dye transfer image, said orange dye-donor element comprising a support having thereon a dye layer comprising a mixture of a pink dye and a first and second yellow dye dispersed in a polymeric binder, said pink dye having the formula A: ##STR18## wherein: R 1 , R 2 and R 3 each independently represents a substituted or unsubstituted alkyl group having from 1 to about 10 carbon atoms; a substituted or unsubstituted cycloalkyl group having from about 5 to about 7 carbon atoms; a substituted or unsubstituted allyl group; a substituted or unsubstituted aryl group of from about 6 to about 10 carbon atoms; or a substituted or unsubstituted hetaryl group of from about 5 to about 10 atoms; X represents C(CH 3 ) 2 , S, O or NR 1 ; and Y represents the atoms necessary to complete a 5- or 6-membered ring which may be fused to another ring system; said first yellow dye having the formula E having the structure: ##STR19## wherein: R 8 , R 9 and R 10 each independently represents a substituted or unsubstituted alkyl group of from 1 to about 10 carbon atom; a cycloalkyl group of from about 5 to about 7 carbon atoms; or a substituted or unsubstituted aryl group of from about 6 to about 10 carbon atoms, such as phenyl, naphthyl, p-tolyl, m-chlorophenyl, p-methoxyphenyl, m-bromophenyl, o-tolyl, etc.; or R 8 and R 9 can be joined together to form, along with the nitrogen to which they are attached, a 5-or 6-membered heterocyclic ring, such as a pyrrolidine or morpholine ring; or either or both of R 8 and R 9 can be joined to the carbon atom of the benzene ring at a position ortho to the position of attachment of the anilino nitrogen to form a 5- or 6-membered ring, thus forming a polycyclic system such as 1,2,3,4-tetrahydroquinoline, julolidine,2,3-dihydroindole, or benzomorpholine; R 11 represents a substituted or unsubstituted alkoxy group having from1 to about 10 carbon atoms, such as methoxy, ethoxy, methoxyethoxy or 2-cyanoethoxy; a substituted or unsubstituted aryloxy group having from about 6 to about 10 carbon atoms, such as phenoxy, m-chlorophenoxy, or naphthoxy; NHR 8 ; NR 8 R 9 ; each W independently represents a substituted or unsubstituted alkyl group having from 1 to about 10 carbon atoms; alkoxy having from 1 to about 10 carbon atoms; halogen; or two adjacent W's together represent the atoms necessary to complete a 5- or 6-membered ring, thus forming a fused ring system; and n represents an integer from 0 to 2; said second yellow dye having the formula F or G, said formula F having the structure: ##STR20## wherein: R 12 represents methyl or a substituted or unsubstituted alkoxy group having from 1 to about 10 carbon atoms; a substituted or unsubstituted aryloxy group having from about 6 to about 10 carbon atoms; R 13 represents a substituted or unsubstituted alkyl group of from 1 to about 10 carbon atom; a cycloalkyl group of from about 5 to about 7 carbon atoms; or a substituted or unsubstituted aryl group of from about 6 to about 10 carbon atoms; R 14 and R 15 each independently represents hydrogen or a substituted or unsubstituted alkyl or alkoxy group having from 1 to about 4 carbon atoms; and said formula G having the structure: ##STR21## wherein: R 17 , R 18 and R 19 each independently represents the same groups as R 1 , R 2 and R 3 above; R 16 represents any of the groups for R 17 , R 18 and R 19 or represents the atoms which when taken together with Z forms a 5- or 6-membered ring; Z represents hydrogen; a substituted or unsubstituted alkyl group having from 1 to about 10 carbon atoms; alkoxy; halogen; or represents the atoms which when taken together with R 16 forms a 5- or 6-membered ring; each W independently represents a substituted or unsubstituted alkyl group having from 1 to about 10 carbon atoms; alkoxy having from 1 to about 10 carbon atoms; halogen; or two adjacent W's together represent the atoms necessary to complete a 5- or 6-membered ring, thus forming a fused ring system; and n represents an integer from 0 to 2.

Claim 12

The process of claim 8 wherein said dye-donor element contains an infrared-absorbing dye in said dye layer.

Claim 13

The process of claim 8 wherein in formula A, R 1 is butyl, R 2 is 2-methoxyethyl, R 3 is methyl, X represents C(CH 3 ) 2 and Y is a 6-membered aromatic ring.

Claim 14

The process of claim 8 wherein in formula E, R 8 and R 9 are each ethyl, R 10 is phenyl and R 11 is dimethylamino.

Claim 15

The process of claim 8 wherein in formula F, R 13 is phenyl, R 12 is methyl, R 14 is 3-methoxy and R 15 is 4-methoxy.

Claim 16

The process of claim 8 wherein in formula G, R 16 is benzyl, R 17 is ethyl, R 18 is hydrogen, R 19 is benzyl, Z is hydrogen and n is 0.

Claim 17

A thermal dye transfer assemblage comprising: a) an orange dye-donor element comprising a support having thereon a dye layer comprising a mixture of dyes dispersed in a polymeric binder, and b) a dye-receiving element comprising a support having thereon a dye image-receiving layer, said dye-receiving element being in a superposed relationship with said orange dye-donor element so that said dye layer is in contact with said dye image-receiving layer, said orange dye-donor element comprising a support having thereon a dye layer comprising a mixture of a pink dye and a first and second yellow dye dispersed in a polymeric binder, said pink dye having the formula A: ##STR22## wherein: R 1 , R 2 and R 3 each independently represents a substituted or unsubstituted alkyl group having from 1 to about 10 carbon atoms; a substituted or unsubstituted cycloalkyl group having from about 5 to about 7 carbon atoms; a substituted or unsubstituted allyl group; a substituted or unsubstituted aryl group of from about 6 to about 10 carbon atoms; or a substituted or unsubstituted hetaryl group of from about 5 to about 10 atoms; X represents C(CH 3 ) 2 , S, O or NR 1 ; and Y represents the atoms necessary to complete a 5- or 6-membered ring which may be fused to another ring system; said first yellow dye having the formula E having the structure: ##STR23## wherein: R 8 , R 9 and R 10 each independently represents a substituted or unsubstituted alkyl group of from 1 to about 10 carbon atom; a cycloalkyl group of from about 5 to about 7 carbon atoms; or a substituted or unsubstituted aryl group of from about 6 to about 10 carbon atoms, such as phenyl, naphthyl, p-tolyl, m-chlorophenyl, p-methoxyphenyl, m-bromophenyl, o-tolyl, etc.; or R 8 and R 9 can be joined together to form, along with the nitrogen to which they are attached, a 5-or 6-membered heterocyclic ring, such as a pyrrolidine or morpholine ring; or either or both of R 8 and R 9 can be joined to the carbon atom of the benzene ring at a position ortho to the position of attachment of the anilino nitrogen to form a 5- or 6-membered ring, thus forming a polycyclic system such as 1,2,3,4-tetrahydroquinoline, julolidine,2,3-dihydroindole, or benzomorpholine; R 11 represents a substituted or unsubstituted alkoxy group having from1 to about 10 carbon atoms, such as methoxy, ethoxy, methoxyethoxy or 2-cyanoethoxy; a substituted or unsubstituted aryloxy group having from about 6 to about 10 carbon atoms, such as phenoxy, m-chlorophenoxy, or naphthoxy; NHR 8 ; NR 8 R 9 ; each W independently represents a substituted or unsubstituted alkyl group having from 1 to about 10 carbon atoms; alkoxy having from 1 to about 10 carbon atoms; halogen; or two adjacent W's together represent the atoms necessary to complete a 5- or 6-membered ring, thus forming a fused ring system; and n represents an integer from 0 to 2; said second yellow dye having the formula F or G, said formula F having the structure: ##STR24## wherein: R 12 represents methyl or a substituted or unsubstituted alkoxy group having from 1 to about 10 carbon atoms; a substituted or unsubstituted aryloxy group having from about 6 to about 10 carbon atoms; R 13 represents a substituted or unsubstituted alkyl group of from 1 to about 10 carbon atom; a cycloalkyl group of from about 5 to about 7 carbon atoms; or a substituted or unsubstituted aryl group of from about 6 to about 10 carbon atoms; R 14 and R 15 each independently represents hydrogen or a substituted or unsubstituted alkyl or alkoxy group having from 1 to about 4 carbon atoms; and said formula G having the structure: ##STR25## wherein: R 17 , R 18 and R 19 each independently represents the same groups as R 1 , R 2 and R 3 above; R 16 represents any of the groups for R 17 , R 18 and R 19 or represents the atoms which when taken together with Z forms a 5- or 6-membered ring; Z represents hydrogen; a substituted or unsubstituted alkyl group having from 1 to about 10 carbon atoms; alkoxy; halogen; or represents the atoms which when taken together with R 16 forms a 5- or 6-membered ring; each W independently represents a substituted or unsubstituted alkyl group having from 1 to about 10 carbon atoms; alkoxy having from 1 to about 10 carbon atoms; halogen; or two adjacent W's together represent the atoms necessary to complete a 5- or 6-membered ring, thus forming a fused ring system; and n represents an integer from 0 to 2.

Claim 18

A thermal dye transfer assemblage comprising: a) an orange dye-donor element comprising a support having thereon a dye layer comprising a mixture of dyes dispersed in a polymeric binder, and b) a dye-receiving element comprising a support having thereon a dye image-receiving layer, said dye-receiving element being in a superposed relationship with said orange dye-donor element so that said dye layer is in contact with said dye image-receiving layer, said orange dye-donor element comprising a support having thereon a dye layer comprising a mixture of a pink dye and a first and second yellow dye dispersed in a polymeric binder, said pink dye having the formula A: ##STR22## wherein: R 1 , R 2 and R 3 each independently represents a substituted or unsubstituted alkyl group having from 1 to about 10 carbon atoms; a substituted or unsubstituted cycloalkyl group having from about 5 to about 7 carbon atoms; a substituted or unsubstituted allyl group; a substituted or unsubstituted aryl group of from about 6 to about 10 carbon atoms; or a substituted or unsubstituted hetaryl group of from about 5 to about 10 atoms; X represents C(CH 3 ) 2 , S, O or NR 1 ; and Y represents the atoms necessary to complete a 5- or 6-membered ring which may be fused to another ring system; said first yellow dye having the formula E having the structure: ##STR23## wherein: R 8 , R 9 and R 10 each independently represents a substituted or unsubstituted alkyl group of from 1 to about 10 carbon atom; a cycloalkyl group of from about 5 to about 7 carbon atoms; or a substituted or unsubstituted aryl group of from about 6 to about 10 carbon atoms, such as phenyl, naphthyl, p-tolyl, m-chlorophenyl, p-methoxyphenyl, m-bromophenyl, o-tolyl, etc.; or R 8 and R 9 can be joined together to form, along with the nitrogen to which they are attached, a 5-or 6-membered heterocyclic ring, such as a pyrrolidine or morpholine ring; or either or both of R 8 and R 9 can be joined to the carbon atom of the benzene ring at a position ortho to the position of attachment of the anilino nitrogen to form a 5- or 6-membered ring, thus forming a polycyclic system such as 1,2,3,4-tetrahydroquinoline, julolidine,2,3-dihydroindole, or benzomorpholine; R 11 represents a substituted or unsubstituted alkoxy group having from1 to about 10 carbon atoms, such as methoxy, ethoxy, methoxyethoxy or 2-cyanoethoxy; a substituted or unsubstituted aryloxy group having from about 6 to about 10 carbon atoms, such as phenoxy, m-chlorophenoxy, or naphthoxy; NHR 8 ; NR 8 R 9 ; each W independently represents a substituted or unsubstituted alkyl group having from 1 to about 10 carbon atoms; alkoxy having from 1 to about 10 carbon atoms; halogen; or two adjacent W's together represent the atoms necessary to complete a 5- or 6-membered ring, thus forming a fused ring system; and n represents an integer from 0 to 2; said second yellow dye having the formula F or G, said formula F having the structure: ##STR24## wherein: R 12 represents methyl or a substituted or unsubstituted alkoxy group having from 1 to about 10 carbon atoms; a substituted or unsubstituted aryloxy group having from about 6 to about 10 carbon atoms; R 13 represents a substituted or unsubstituted alkyl group of from 1 to about 10 carbon atom; a cycloalkyl group of from about 5 to about 7 carbon atoms; or a substituted or unsubstituted aryl group of from about 6 to about 10 carbon atoms; R 14 and R 15 each independently represents hydrogen or a substituted or unsubstituted alkyl or alkoxy group having from 1 to about 4 carbon atoms; and said formula G having the structure: ##STR25## wherein: R 17 , R 18 and R 19 each independently represents the same groups as R 1 , R 2 and R 3 above; R 16 represents any of the groups for R 17 , R 18 and R 19 or represents the atoms which when taken together with Z forms a 5- or 6-membered ring; Z represents hydrogen; a substituted or unsubstituted alkyl group having from 1 to about 10 carbon atoms; alkoxy; halogen; or represents the atoms which when taken together with R 16 forms a 5- or 6-membered ring; each W independently represents a substituted or unsubstituted alkyl group having from 1 to about 10 carbon atoms; alkoxy having from 1 to about 10 carbon atoms; halogen; or two adjacent W's together represent the atoms necessary to complete a 5- or 6-membered ring, thus forming a fused ring system; and n represents an integer from 0 to 2.

Claim 19

The assemblage of claim 14 wherein said dye-donor element contains an infrared-absorbing dye in said dye layer.

Claim 20

The assemblage of claim 14 wherein in formula A, R 1 is butyl, R 2 is 2-methoxyethyl, R 3 is methyl, X represents C(CH 3 ) 2 and Y is a 6-membered aromatic ring.

Claim 21

The assemblage of claim 14 wherein in formula E, R 8 and R 9 are each ethyl, R 10 is phenyl and R 11 is dimethylamino.

Claim 22

The assemblage of claim 14 wherein in formula F, R 13 is phenyl, R 12 is methyl, R 14 is 3-methoxy and R 15 is 4-methoxy.

Claim 23

The assemblage of claim 14 wherein in formula G, R 16 is benzyl, R 17 is ethyl, R 18 is hydrogen, R 19 is benzyl, Z is hydrogen and n is 0.