Studies on the synthesis of amino acids ***-liquid phase transfer catalytic dicondensation of 1,4-diacety1-2,5-piperazinedione with aldehydes
Studies on the synthesis of amino acids ***-liquid phase transfer catalytic dicondensation of 1,4-diacety1-2,5-piperazinedione with aldehydes作者机构:Department of Chemistry Nanjing University Nanjing 210008
出 版 物:《Chinese Journal of Chemistry》 (中国化学(英文版))
年 卷 期:1992年第10卷第1期
页 面:82-88页
核心收录:
主 题:PDO KBr Studies on the synthesis of amino acids XII.Solid-liquid phase transfer catalytic dicondensation of 1,4-diacety1-2,5-piperazinedione with aldehydes ppm
摘 要:3,6-Diarylidene-2,5-piperazinediones(2)and 3-alkylidene-6-arylidene-2,5-piperazfnediones (6)were synthesized from diacetyl-2,5-piperazinedione(1)under solid-liquid phase transfer catalytic conditions.2 could be easily convered to a-amino acid by reducing with zinc powder and hydrolyzing with concentrated hydrochloric *** effect of different phase transfer catalysts and reaction con- ditions were studied.