| 摘要 |
NEW MATERIAL:9-phenylimino-8-thia-1,6-diazabicyclo[4,3,0]nonane-7-one derivative expressed by formula I (X is H or halogen; Y is alkoxyalkyl). EXAMPLE:9-[4-chloro-3-(2-n-propoxyethoxycarbonylmethyltio)phenylimino]-S- thia-1,6-diazabicyclo[4,3,0]nonane-7-one. USE:Herbicide. PREPARATION:A compound expressed by formula II {e.g., 1,2- tetramethylene-1-[4-chloro-3-(2-n-propoxyethoxycarbonylmethylthio) phenylaminothiocarbonyl]hydrazine} is reacted with phosgene expressed by formula III in the presence of base (e.g., pyridine). |
