1-Alkyl-4-dialkylaminopyridinium Halides as Phase-Transfer Catalysts in Dichlorocarbene Reactions
作者:Gytis-Kazimieras Kupetis、Gintautas šaduikis、Ona Nivinskienø、Olegas Eicher-Lorka
DOI:10.1007/s007060200009
日期:2002.3.1
A series of 1-alkyl-4-dialkylaminopyridinium halides derived from 4-dimethylamino- and 4-morpholinopyridines were synthesized and tested as phase-transfer catalysts in three typical reactions of dichlorocarbene: dehydration of benzamide, N-formylation of diphenylamine, and dichlorocyclopropanation of styrene. The catalytic performance of the above compounds was found comparable or higher than that
合成了一系列衍生自4-二甲基氨基和4-吗啉代吡啶的1-烷基-4-二烷基氨基吡啶鎓卤化物,并在二氯卡宾的三个典型反应中作为相转移催化剂进行了测试:苯甲酰胺的脱水,二苯胺的N-甲酰化和二氯胺的二氯环丙烷化苯乙烯。发现上述化合物的催化性能与常规的季铵催化剂相当或更高。评价了催化剂结构对反应性的影响。