| abstract |
NEW MATERIAL:(Iso)maleimide derivatives of formula I, wherein A is a groups of formula II or III; R 2 , R 3 are each H, halogen, a 1W6C alkyl, a 3W8C cycloalkyl, a 6W12C aryl, aralkyl; R 1 is R 2 , a 6W12C aryloxy, a 1W6C alkoxyl ; l is 1W6; m is 0.1, provided that when m is 1, X is a 1W6C alkylene, a 3W8C cycloalkylene, a 6W12C arylene, aralkylene, etc. n EXAMPLE: N-(2-Benzothiazylthio)maleimide. n USE: Vulcanization accelerator for rubber. n PREPARATION: A benzothiazole-2-sulfenyl halide of formula IV (wherein hal is halogen) is reacted with a maleimide compd. of formula V in the presence of an acid scavenger (e.g., Na 2 CO 3 ) in a solvent (e.g., benzene) at 0W100°C. n COPYRIGHT: (C)1987,JPO&Japio |