| 摘要 |
NEW MATERIAL:The compound of formulaI(X is halogen or methyl; R1 is lower alkyl, lower alkenyl, lower alkynyl, etc.; R2 is lower alkyl, cycloalkylalkyl, lower haloalkyl, etc.). EXAMPLE:Isopropyl N-[(3,5-dichloro-4-methoxy)phenyl]carbamate. USE:Agent for controlling microorganisms resistant to benzimidazole-type or thiophanate pesticide. It has high safety to man, animal and fish, little phytotoxicity to agricultural and horticultural plants, and has high practical value. PROCESS:The compound of formulaIcan be prepared in high yield, by reacting the aniline derivative of formula II with the chloroformic acid ester of formula III in an organic solvent such as benzene in the presence of a dehydrochlorinating agent such as pyridine. |
