NEW MATERIAL:A 1,5-benzothiazepine derivative shown by the formula I (R1 is H, 1W5C alkyl, aryl, aralkyl, or carboxyl; R2 is H, or 1W3C alkyl; R3 is H, halogen, or 1W3C alkyl; n is 0W2).
EXAMPLE: 2-Propyl-2,3-dihydro-1,5-benzothiazepin-4-(5H)-one.
USE: A controller for plant blights. The controller is used along, it is blended with agricultural chemicals such as a fungicide, insecticide, etc., e.g., blasticidin S, kasugamycin, EDDP, etc., or fertilizer, etc., it is effective and eliminates labor.
PREPARATION: For example, an aminothiophenol derivative shown by the formula II is reacted with a carboxylic acid shown by the formula III or its reactive derivative in the presence of a base, to give a compound shown by the formula I a (R4 is H, 1W5C alkyl, aryl, or aralkyl).
NISHIHATA TAKESHI
FUKATSU SHIYUNZOU
MATSUMOTO KUNIOMI
WATANABE TETSUO
