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Synthesis of Fischer indole derivatives using carboxyl-functionalized ionic liquid as an efficient and recyclable catalyst 被引量:5
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作者 Feng Ping Yi Hai Yang Sun +2 位作者 Xian Hua Pan Yuan Xu ji zong li 《Chinese Chemical Letters》 SCIE CAS CSCD 2009年第3期275-278,共4页
Fischer indole cyclization of phenylhydrazine and various ketones using carboxyl-functionalized ionic liquid, 1-carboxymethyl- 3-methylimidazolium tetrafluoroborate (abbreviated as [crnmim] [BF4]) as catalyst was su... Fischer indole cyclization of phenylhydrazine and various ketones using carboxyl-functionalized ionic liquid, 1-carboxymethyl- 3-methylimidazolium tetrafluoroborate (abbreviated as [crnmim] [BF4]) as catalyst was successfully performed. The yields of the target compounds were 80-92%, the purities were 96-98%. The catalyst could be recovered and reused for at least six times without significant loss in activity. 展开更多
关键词 Functionalized ionic liquid CATALYST Fischer indole synthesis
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