NEW MATERIAL:A benzothiazole derivative expressed by formula I [R is 2-(1- methyl)imidazolyl or formula IIWIV; R' is H, NH2, 1W4C alkyl or 1W4C alkylthio; n is 0, 1 or 2].
EXAMPLE: 2-[2'-(5'-Methyl-1',3',4'-thiadiazolyl)thio]benzothiazole.
USE: A plant blight controlling agent especially useful as a blast controlling agent of rice plant.
PREPARATION: A compound expressed by the formula HS-R is reacted with, e.g. NaH, in a suitable solvent to form a Na salt. 2-Chlorobenzothiazole is added to the above-mentioned reaction solution and reacted at preferably room temperature W 100°C for 1W20hr or a compound expressed by the formula X-R (X is halogen) is reacted with 2-mercaptobenzothiazole sodium salt to afford the aimed compound expressed by formula I (n is 0).
YASUFUKU KAZUE
NISHIHATA TAKESHI
IMAMURA KEIICHI
MATSUMOTO KUNIOMI
WATANABE TETSUO
| JPS5214768A | 1977-02-03 |