Photoactivated miticidal and insecticidal ethynyl-thiazoles

Claim 1

A photoactive acaricidal ethynylthiazole of the formula ##STR2## in which: R 1 is naphthyl; phenyl; phenyl substituted with at least one substituent selected from lower alkyl, halogen, lower alkoxy, lower haloalkoxy, lower alkylthio, lower haloalkylthio, phenylthio, nitro, cyano, lower alkylcarbonyl, lower haloalkylcarbonyl, lower alkoxycarbonyl, phenoxycarbonyl in which the phenyl ring may be substituted with lower alkyl or halogen, a group of the formula --C(X)N R 4R 5 in which R 4 and R 5 are independently hydrogen, lower alkyl or phenyl and X is oxygen or sulfur, a group of the formula --P(O)(OR 6 ) 2 in which R 6 is lower alkyl, and a group of the formula --OCF 2 O-- bridging adjacent atoms of the phenyl ring; thienyl; or thienyl substituted with at least one substituent selected from halogen, lower haloalkyl, lower alkylthio, lower haloalkylthio, phenylthio, lower alkylcarbonyl, lower haloalkylcarbonyl, lower alkoxycarbonyl, phenoxycarbonyl in which the phenyl ring may be substituted with lower alkyl or halogen, a group of the formula --C(X)NR 4 R 5 in which R 4 or R 5 and X are as defined above, and a group of the formula --P(O)(OR 6 ) in which R 6 is lower alkyl; R 2 is naphthyl; phenyl; or phenyl substituted with at least one substituent selected from lower alkyl, halogen, lower haloalkyl, --OCF 2 O-- bridging adjacent carbon atoms of the phenyl ring, lower alkoxy, lower haloalkoxy, lower alkylthio, lower haloalkylthio, phenylthio, nitro, cyano, lower alkylcarbonyl, lower haloalkylcarbonyl, lower alkoxycarbonylcarbonyl, phenoxycarbonyl in which the phenyl ring may be substituted with lower alkyl or halogen, a group of the formula --C(X)NR 4 R 5 in which R 4 and R 5 and X are as defined above, and a group of the formula --P(O)(OR 6 ) 2 in which R 6 is lower alkyl; and R 3 is hydrogen, lower alkyl, phenyl, or methylphenyl.