Intermediates useful for the synthesis of pesticides
申请人:RHONE-POULENC AGROCHIMIE
公开号:EP0708090A1
公开(公告)日:1996-04-24
The present invention pertains to novel 3-substituted-4-thiopyrrole intermediates for the preparation of 1-arylpyrrole compounds that are useful for the control of insects, acarids and nematodes.
The compounds, including their isomers, e.g., diastereomers and optical isomers, are compounds of a general formula (I)
wherein R, R₁, R₂, W and n are as defined in the description.
本发明涉及用于制备 1-芳基吡咯化合物的新型 3-取代-4-巯基吡咯中间体,这些化合物可用于防治昆虫、害虫和线虫。
这些化合物,包括它们的异构体,例如非对映异构体和光学异构体,是通式(I)的化合物
其中 R、R₁、R₂、W 和 n 如说明中所定义。
US6271392B1
申请人:——
公开号:US6271392B1
公开(公告)日:2001-08-07
An efficient synthesis of 2-chloro-3-carboethoxy- or 2-chloro-3-cyano- 4,5-disubstituted and 5-substituted pyrroles
作者:Louise H. Foley
DOI:10.1016/0040-4039(94)88056-5
日期:1994.8
Reaction of substituted 2-cyano-4-oxo-alkanoic acid ethyl esters or 2-cyano-4-oxo-alkanonitriles with HCl gas in 2-propanol or concentrated HCl in 2-propanol for the dinitriles provides an efficientsynthesis of substituted 2-chloropyrroles from readily available starting materials and reagents.
Intermediates useful for the synthesis of 1-arylpyrrole pesticides
申请人:Rhone-Poulenc Inc.
公开号:US06271392B1
公开(公告)日:2001-08-07
The present invention pertains to novel 3-substituted-4-thiopyrrole intermediates for the preparation of 1-arylpyrrole compounds that are useful for the control of insects, acarids and nematodes.
The compounds, including their isomers, e.g., diastereomers and optical isomers, are compounds of a general formula (I)
wherein the structural variables are as defined in the description.