Direct nucleophilic substitution reaction of alcohols mediated by a zinc-based ionic liquid
Direct nucleophilic substitution reaction of alcohols mediated by a zinc-based ionic liquid
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锌基离子液体介导的醇直接亲核取代反应
DOI:
10.1039/c0gc00763c
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发表时间:
2011-05
期刊:
影响因子:
9.8
通讯作者:
Zhuo, Kelei
中科院分区:
文献类型:
--
作者:
Zhu, Anlian;Li, Lingjun;Wang, Jianji;Zhuo, Kelei
A zinc-based ionic liquid ([CHCl][ZnCl2]2) was found to be an excellent reaction medium for the direct nucleophilic substitution reactions of alcohols. The high conversion, high selectivity, easy separation procedure, catalyst reusability and no necessity of excessive nucleophiles make the chemical process cleaner. This reaction was believed to work through the carbocation mechanism and the existence of carbocation was detected by UV-vis spectroscopy. It was suggested that the hydroxyl group on the choline cation was the major inducement for the formation of special microstructures which could provide adequate stability for the carbocation in the reaction systems and increase the reactivity and selectivity.
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