Organic reactions in ionic liquids: N-alkylation of phthalimide and several nitrogen heterocycles
ZG Le, ZC Chen, Y Hu, QG Zheng
Index: Le, Zhang-Gao; Chen, Zhen-Chu; Hu, Yi; Zheng, Qin-Guo Synthesis, 2004 , # 2 p. 208 - 212
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Citation Number: 57
Abstract
Abstract N-Alkylation of heterocyclic compounds bearing an acidic hydrogen atom attached to nitrogen with alkyl halides is accomplished in ionic liquids ([bmim] BF 4= 1-butyl-3- methylimidazolium tetrafluoroborate,[bmim] PF 6= 1-butyl-3-methylimida-zolium hexafluorophosphate,[buPy] BF 4= butylpyridinium tetrafluoroborate) in the presence of potassium hydroxide as a base. In this manner, phthalimide, indole, benzimidazole, ...
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