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US4082802A
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Process for the preparation of aromatic secondary or tertiary amino compounds
Assignee: Sumitomo Chemical Co Ltd
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Filing: 1973-12-11
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Granted: 1978-04-04
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Expires: 1993-12-11
Abstract
Abstract Aromatic secondary or tertiary amino compounds of the formula, ##STR1## wherein X is a hydrogen atom, a methyl group or a methoxygroup, and R is a C 1 -C 4 alkyl group, are produced by reacting hydrogen and an aromatic nitro compound of the formula, ##STR2## wherein X is as defined above, with an alcohol of the formula, ROH wherein R is as defined above, in the presence of a catalyst of copper chromite.
Inventors
- 👤 Masataka Nakagawa
- 👤 Tadasu Iga
- 👤 Akira Fukura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 05:25
CPC Classifications
C; C07; C07C; C07C209/00; C07C209/30; C07C209/32; C07C209/36
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
133 words
A process for producing aromatic secondary or tertiary amino compounds with the formula, ##STR23## wherein X is a hydrogen atom, a methyl group or a methoxy group, and R is methyl, ethyl, n-propyl isopropyl, n-butyl, isobutyl or sec.-butyl, which comprises reacting hydrogen, an aromatic nitro compound of the formula, ##STR24## wherein X is as defined above, and an alcohol of the formula, ROH wherein R is as defined above, in the presence of a catalyst of copper chromite consisting essentially of copper chromite of the formula CuOCuCr 2 O 4 , or a catalyst of copper chromite consisting essentially of as a main ingredient copper chromite of the formula CuOCuCr 2 O 4 and as a promoter at least one member selected from the group consisting of Fe, Ni, Ba, Mg and Mn.
Claim 2
Dependent Claim
133 words
A process for producing aromatic secondary or tertiary amino compounds with the formula, ##STR23## wherein X is a hydrogen atom, a methyl group or a methoxy group, and R is methyl, ethyl, n-propyl isopropyl, n-butyl, isobutyl or sec.-butyl, which comprises reacting hydrogen, an aromatic nitro compound of the formula, ##STR24## wherein X is as defined above, and an alcohol of the formula, ROH wherein R is as defined above, in the presence of a catalyst of copper chromite consisting essentially of copper chromite of the formula CuOCuCr 2 O 4 , or a catalyst of copper chromite consisting essentially of as a main ingredient copper chromite of the formula CuOCuCr 2 O 4 and as a promoter at least one member selected from the group consisting of Fe, Ni, Ba, Mg and Mn.
Claim 3
Dependent Claim
17 words
A process according to claim 1, wherein said reaction is carried out under a vapor phase condition.
Claim 4
Dependent Claim
23 words
A process according to claim 1, wherein 1 to 20 moles of the alcohol per mole of the aromatic nitro compound is used.
Claim 5
Dependent Claim
20 words
A process according to claim 1, wherein said reaction is carried out at a temperature of 150° to 400° C.
Claim 6
Dependent Claim
25 words
A process according to claim 1, wherein said reaction is carried out while a pressure of 20 to 100 atmospheres is maintained with hydrogen gas.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-04-03 | 1981-10-03 | 1982-04-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-04-03 | 1985-10-03 | 1986-04-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-04-03 | 1989-10-03 | 1990-04-04 | $7700.00 | Window Closed / Lapsed |