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Synthesis 2006(2): 349-353
DOI: 10.1055/s-2005-918510
DOI: 10.1055/s-2005-918510
PAPER
© Georg Thieme Verlag Stuttgart · New York
A New Synthetic Approach to Pyrrolo[3,4-a]indolizines
Further Information
Received
29 June 2005
Publication Date:
21 December 2005 (online)
Publication History
Publication Date:
21 December 2005 (online)
Abstract
2-Pyridineacetonitrile was found to react with 1,3-dichloro-2-propanone in the presence of chlorotrimethylsilane yielding 2-chloromethyl-1-indolizinecarbonitrile. The chlorine atom in the prepared indolizine was replaced by various nucleophiles including substituted anilines. Treatment of 2-(arylamino)methyl-1-indolizinecarbonitriles with hydrochloric acid resulted in 2-aryl-2,3-dihydro-1H-pyrrolo[3,4-a]indolizine-1-iminium chlorides.
Key words
alkylations - amidines - chlorotrimethylsilane - nitriles - ultrasound
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