Preparation of N-[(1-(thienyl)alkyl]amine derivative
US5117000A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 27, 1990 |
| Grant date | May 26, 1992 |
| Priority date | — |
| Expiry date | Mar 27, 2010 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D333/32
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
N-[1-(Thienyl)alkyl]amine derivative of the formula: ##STR1## which has excellent herbicidal activity against lowland annual weeds and upland weeds, can be prepared by reacting a thiophen derivative of the formula: ##STR2## with an aldehyde of the formula: EQU ACHO and an amide of the formula: EQU NH.sub.2 --CO--R in the presence of formic acid or a mixture of formic acid with phosphoric acid wherein Z is halogen, alkyl or alkoxy group; (n) is 0, 1 or 2; A is hydrogen or alkyl group; R is alkyl group, group of the formula: ##STR3## in which X and Y are hydrogen, alkyl group, haloalkyl group, alkoxy group, alkoxymethyl group or halogen, or group of the formula: ##STR4## in which Z and (n) are the same as defined above.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.