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取代肼与α、β不饱和醛酮的反应机理探究
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作者 王水晶 王洪福 《绵阳师范学院学报》 2005年第2期49-52,共4页
就α、β不饱和醛酮与取代肼的反应机理探究对目前教科书中几种不同说法提出了新的看法,即在一定条件下α、β不饱和醛酮与取代肼的反应也可以是1、4加成为主,苯取代烷基的氮原子进攻β位的烯碳原子,反应的中间体可以分离和观察到,所以... 就α、β不饱和醛酮与取代肼的反应机理探究对目前教科书中几种不同说法提出了新的看法,即在一定条件下α、β不饱和醛酮与取代肼的反应也可以是1、4加成为主,苯取代烷基的氮原子进攻β位的烯碳原子,反应的中间体可以分离和观察到,所以这个多中心反应的主要途径和反应产物与反应条件和反应物的结构密切相关。 展开更多
关键词 1、2加成 14加成 取代肼 中间体 产物
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Electrosynthesis of hydroquinonethioethers using electrochemical oxidation of hydroquinone in the presence of thiouracil derivatives 被引量:1
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作者 Mohsen Ameri Alireza Asghari +2 位作者 Ali Amoozadeh Hassan Daneshinejad Davood Nematollahi 《Chinese Chemical Letters》 SCIE CAS CSCD 2014年第5期797-801,共5页
Electrochemical oxidation of hydroquinone(1a) has been studied in the presence of 6-methyl-2-thiouracil(3a) and 6-propyl-2-thiouracil(3b) as nucleophiles in a DMF/buffer mixture,using cyclic voltammetry and cont... Electrochemical oxidation of hydroquinone(1a) has been studied in the presence of 6-methyl-2-thiouracil(3a) and 6-propyl-2-thiouracil(3b) as nucleophiles in a DMF/buffer mixture,using cyclic voltammetry and controlled-potential coulometry.The results indicated that the p-quinone(2a) derived from 1a participates in a 1 4-Michael addition reaction with the thiouracil derivatives(3a–b) to form the corresponding hydroquinonethioether derivatives(6a–6b).The electrosynthesis of these compounds(6a–b) has been successfully performed on carbon rod electrodes in an undivided cell in good yield and purity. 展开更多
关键词 Electrochemical oxidation Cyclic voltammetry Thiouracil derivatives 1 4-Michael addition Hydroquinonethioether
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