SO3H-Functionalized Ionic Liquids: Green, Efficient and Reusable Catalysts for the Facile Dehydration of Aldoximes into Nitriles

被引：32

作者：

Davoodnia, Abolghasem ^{[1
]}

Khojastehnezhad, Amir ^{[1
]}

Bakavoli, Mehdi ^{[1
]}

Tavakoli-Hoseini, Niloofar ^{[1
]}

机构：

[1] Islamic Azad Univ, Mashhad Branch, Dept Chem, Fac Sci, Mashhad, Iran

来源：

CHINESE JOURNAL OF CHEMISTRY | 2011年 / 29卷 / 05期

关键词：

ionic liquid; aldoxime; nitrile; dehydration; CONVENIENT ACCESS; ONE-POT; CONVERSION; ALDEHYDES; SYSTEM; KETONES;

D O I：

10.1002/cjoc.201190199

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Easily synthesized aldoximes have been converted to the corresponding nitriles under very mild conditions by a simple reaction using two halogen-free SO3H-functionalized ionic liquids, 3-methyl-1-(4-sulfonic acid)butylimidazolium hydrogen sulfate [MIM(CH2)(4)SO3H][HSO4] and 1-(4-sulfonic acid) butylpyridinium hydrogen sulfate [PY(CH2)(4)SO3H][HSO4], as catalyst and reaction medium without any additional organic solvent. The method was equally effective for aromatic aldoximes bearing electron-donating and electron-withdrawing substituents. Taking into account environmental and economical consideration, the protocol presented here has the merits of environmentally friendly, simple operation, easy work-up and very good yields. The catalysts could be recycled and reused for several times without noticeably decreasing in their catalytic activities.

引用

页码：978 / 982

页数：5

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