PROCESS FOR PREPARATION OF 4-(4-ISOBUTYLPHENYL)-BUTYR-ALDEHYDE AND ITS USE FOR THE PREPARATION OF (-)-4(2-CHLOROPHENYL)-22-(4-ISOBUTYLPHENYL)-ETHYL-6,9-DIM ETHYL-6H-THIENO3,2-F1,2,4-TRIAZOLO4,31,4DIAZEPINE

摘要

: The invention relates to a simple, economical synthesis of 4-(4-isobutylphenyl)-butyraldehyde and its use for the preparation of (-)-4-(2-chlorophenyl)-2-¢2-(4-isobutylphenyl)-ethyl!-6,9-dimethyl-6H-thieno¢3,2-f!-¢1,2,4!triazolo¢4,3-a!¢1,4!diazepine.