Process for the preparation of 3-cyano-4-aryl-pyrroles
US4965363A · kind A · utility
5Cited by
1References
7Claims
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Key dates
| Filing date | Jan 5, 1989 |
| Grant date | Oct 23, 1990 |
| Priority date | — |
| Expiry date | Jan 5, 2009 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D207/34
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A process for the preparation of a 3-cyano-4-arylpyrrole of the formula ##STR1## in which Ar is optionally substituted heteroaryl or aryl, comprising reacting an .alpha.-cyanocinnamamide of the formula ##STR2## with a sulphonylmethylisocyanide of the formula EQU R--SO.sub.2 --CH.sub.2 --NC (III) in which PA1 R is alkyl, optionally substituted cycloalkyl or optionally substituted aryl, in the presence of a base and in the presence of a diluent. The products are known fungicides.
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