引用本文:
Feng Ping Yi, Hai Yang Sun, Xian Hua Pan, Yuan Xu, Ji Zong Li. Synthesis of Fischer indole derivatives using carboxyl-functionalized ionic liquid as an efficient and recyclable catalyst[J]. Chinese Chemical Letters,
2009, 20(3): 275-278.
doi:
10.1016/j.cclet.2008.11.010
Citation: Feng Ping Yi, Hai Yang Sun, Xian Hua Pan, Yuan Xu, Ji Zong Li. Synthesis of Fischer indole derivatives using carboxyl-functionalized ionic liquid as an efficient and recyclable catalyst[J]. Chinese Chemical Letters, 2009, 20(3): 275-278. doi: 10.1016/j.cclet.2008.11.010
Citation: Feng Ping Yi, Hai Yang Sun, Xian Hua Pan, Yuan Xu, Ji Zong Li. Synthesis of Fischer indole derivatives using carboxyl-functionalized ionic liquid as an efficient and recyclable catalyst[J]. Chinese Chemical Letters, 2009, 20(3): 275-278. doi: 10.1016/j.cclet.2008.11.010
Synthesis of Fischer indole derivatives using carboxyl-functionalized ionic liquid as an efficient and recyclable catalyst
摘要:
Fischer indole cyclization of phenylhydrazine and various ketones using carboxyl-functionalized ionic liquid, 1-carboxymethyl-3-methylimidazolium tetrafluoroborate (abbreviated as [cmmim][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.
English
Synthesis of Fischer indole derivatives using carboxyl-functionalized ionic liquid as an efficient and recyclable catalyst
Abstract:
Fischer indole cyclization of phenylhydrazine and various ketones using carboxyl-functionalized ionic liquid, 1-carboxymethyl-3-methylimidazolium tetrafluoroborate (abbreviated as [cmmim][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.
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Key words:
- Functionalized ionic liquid
- / Catalyst
- / Fischer indole synthesis
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