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Synthesis of Fischer indole derivatives using carboxyl-functionalized ionic liquid as an efficient and recyclable catalyst by Feng Ping Yi; Hai Yang Sun; Xian Hua Pan; Yuan Xu; Ji Zong Li is a Chemistry article available to read on EtoBox.

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Fischer indole cyclization of phenylhydrazine and various ketones using carboxyl-functionalized ionic liquid, 1-carboxymethyl-3-methylimidazolium tetrafluoroborate (abbreviated as [cmmim][BF 4 ]) 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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Author

Feng Ping Yi; Hai Yang Sun; Xian Hua Pan; Yuan Xu; Ji Zong Li

Publisher

Chinese Electronic Periodical Services; Elsevier ; Elsevier BV (ISSN 1001-8417)

Published

2009

Language

EN

Field

Chemistry (Physical Sciences)