A process for preparing 2-alkyl-3-aminothiophene derivative and 3-aminothiophene derivative
申请人:Mitsui Chemicals, Inc.
公开号:EP1036793A2
公开(公告)日:2000-09-20
A compound represented by the formula (1) which is useful as an agricultural fungicide or an intermediate thereof can be obtained by reacting a compound of the general formula (2) with a compound of the general formula (3) in the presence of an acid and reducing the resulted reaction mixture.
wherein, each of R1 to R4 and R1a to R4a independently represents a hydrogen atom or an alkyl group, and R represents an alkyl group, alkoxy group, phenyl group or 5-membered or 6-membered heterocyclic group.
Process for the preparation of 2-alkyl-3-aminothiophene derivatives and 3-aminothiophene derivatives
申请人:MITSUI CHEMICALS, INC.
公开号:EP1559714A1
公开(公告)日:2005-08-03
A compound represented by the formula (6a), which is useful as an intermediate
wherein R9 represents a hydrogen atom, carboxyl group or alkoxy carbonyl group having 1 to 6 carbon atoms and Ra represents a specific aromatic or non-aromatic heterocyclic ring.