摘要:
Provided are a polycyclic pyrazolinone derivative indicated by general formula (1) (in the formula, R 1 , X 1 , X 2 , X 3 , and Y indicate the definitions provided in the Specification) and a herbicide comprising same as effective component thereof.
摘要:
In a process for producing 1-substituted-3-fluoroalkyl-pyrazole-4-carboxylate (3) by a reaction of 2-alkoxymethylenefluoroacylacetate (1) and hydrazine (2), the reaction is conducted in the presence of a base and water, to produce 1-substituted-3-fluoroalkylpyrazole-4-carboxylate (3) with high selectivity and yield. This novel process enables to produce 1-substituted-3-fluoroalkylpyrazole-4-carboxylate (3), which is useful as an intermediate for pharmaceuticals and agrochemicals, with high selectivity and yield by simple and safe operations.
摘要:
Disclosed is a method for producing 1-substituted-3-fluoroalkyl pyrazole-4-carboxylate (3) through a reaction between 2-alkoxymethylene fluoroacyl acetate (1) and a hydrazine (2). By performing the reaction in the presence of a base and water, 1-substituted-3-fluoroalkyl pyrazole-4- carboxylate (3) can be highly selectively produced with high yield. This novel method enables to highly selectively produce 1-substituted-3-fluoroalkyl pyrazole-4- carboxylate (3), which is useful as an intermediate for pharmaceutical and agrichemical products, with high yield by simple and safe operations.