| abstract |
NEW MATERIAL:A compound of formula I (X, Y are H, halogen, lover alkyl; R is H, lower alkyl; A is nitrile, aldehyde, mesyl; wherein X and Y are simultaneously not H). n EXAMPLE: 2-(3-Chlorophenyl)-3-phenylpentadinitrile. n USE: A herbicide. The compound has high herbicidal activity and safety. n PREPARATION: A benzylcyanide derivative of formula II is reacted with a styrene derivative of formula III in the presence of a base in an alcohol as a solvent, followed by subjecting the reaction product to a Michael addition reaction to provide the compound of formula I. n COPYRIGHT: (C)1992,JPO&Japio |