Novel Bis-(N-alkyl-N ,N-dimethyl-ammonium) Polyethyleneglycol Ether Salts as Phase Transfer Catalysts in the Condensation of l,4-Diacetyl-2,5-piperazinedione and Aldehydes

作     者：WANG Li-xin,XU Ming-hua,SHI Yao-zcng and HU Hong-wen (Department of Chemistry,Nanjing University,Nanjing,210008) resent address Chengdu Institute of Organic Chemistry,Acdemia Sinica,Chengdu,610015 Present address:Chengdu lnstutute of Organic Chentistry Acdemia Simca.Chengdu,G10015 

作者机构：NANJING UNIVDEPT CHEMNANJING 210008PEOPLES R CHINA 

出 版 物：《Chemical Research in Chinese Universities》 (高等学校化学研究（英文版）)

年 卷 期：1995年第11卷第2期

页      面：178-184页

核心收录：

学科分类：081704[工学-应用化学] 07[理学] 08[工学] 0817[工学-化学工程与技术] 070303[理学-有机化学] 0703[理学-化学] 

基　　金：Supported by the National Natureal Science Fomentation of China the National Education Commission Foundation of China 

主　　题：Phase transfer catalysis 2 5-Piperazincdione Selectivity 

摘      要：Phase transfer catalysis (PTC) has become one of the most extensively used techniques in organic synthesis. The key factor in such processes is the catalyst. There are mainly two kinds of phase transfer catalysts, one is the so called crown ethers including macrocyeles, open chain molecules with long chains, bearing heteroatoms at a proper distance, and can chelate inorganic