摘要
合成了12个吡啶氮桥联的双环三唑鎓盐2a～2l卡宾催化剂前体,用于催化苯偶姻缩合反应和酯交换反应,考察了反应条件对催化反应的影响,并与其它三唑鎓盐的催化活性进行了比较.结果表明,在较低催化剂用量下,催化剂2c表现出优良的催化活性,分离产率最高分别达到98%和93%.
A new class of pyrido-annulated triazolium salts 2a～2l has been synthesized and its application to the benzoin condensation and transesterification reaction catalyzed by pyrido-annulated triazolium salts was explored, Reaction condition effect was tested. The triazolium salt 2c turned out to be a powerful catalyst in benzoin condensation and transesterification reaction, which was comparable with or even superior to other well-established triazolylidenes already in the literature.
出处
《化学学报》
SCIE
CAS
CSCD
北大核心
2010年第9期897-903,共7页
Acta Chimica Sinica
基金
陕西省教育厅科学研究计划(No.09JK837)资助项目
关键词
吡啶并三唑鎓盐
N-杂环卡宾
苯偶姻缩合
酯交换反应
pyrido-annulated triazolium salt
N-heterocyclic carbene
benzoin condensation
transesterification reaction
