RECYCLABLE CATALYSTS FOR CHLORINATION OF ORGANIC ACIDS AND ALCOHOLS
申请人:GALAXY SURFACTANTS LTD.
公开号:US20170274362A1
公开(公告)日:2017-09-28
The present invention discloses recyclable polymeric catalyst of Formula I, for chlorination of organic acids and alcohols using chlorinating agents such as carbonyl chloride, oxalyl chloride or thionyl chloride,
wherein, ‘m’ on the pendent groups on polystyrene backbone can have values from 1 to 5 and R is the alkyl group ranging from C1 to C5.
Iron catalyzed efficient synthesis of poly-functional primary amines via the direct use of ammonia
作者:Chaoqun Ma、Jianghui Chen、Dong Xing、Yuan Sheng、Wenhao Hu
DOI:10.1039/c7cc00003k
日期:——
An iron catalyzed three-component reaction of alkyl diazoesters, isatins and ammonia is reported. This reaction provided convenient access to non-protected [small beta]-hydroxy-[small alpha]-aminoesters with adjacent quaternary stereocenters. This transformation is achieved via...
Recyclable catalysts for chlorination of organic acids and alcohols
申请人:GALAXY SURFACTANTS LTD.
公开号:US10654032B2
公开(公告)日:2020-05-19
The present invention discloses recyclable polymeric catalyst of Formula I, for chlorination of organic acids and alcohols using chlorinating agents such as carbonyl chloride, oxalyl chloride or thionyl chloride,
wherein, ‘m’ on the pendent groups on polystyrene backbone can have values from 1 to 5 and R is the alkyl group ranging from C1 to C5.