Journal
LETTERS IN ORGANIC CHEMISTRY
Volume 6, Issue 2, Pages 159-164Publisher
BENTHAM SCIENCE PUBL LTD
DOI: 10.2174/157017809787582735
Keywords
One pot; Fischer indole synthesis; bismuth nitrate; phenyl hydrazine hydrochloride; cyclohexanone; ethyl methyl ketone
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A novel one-pot fisher indole synthesis approach has been developed by using bismuth nitrate as a catalyst. Yields around 90-95% were obtained after reaction in methanol at reflux temperature in 20-40 min. Apart from the mild reaction conditions of the process and its excellent results, the simplicity of product isolation and the possibility to recycle the bismuth nitrate offers a significant advantage.
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