4.4 Article

Efficient synthesis of 9H-pyrrolo[1,2-a]indol-9-one derivatives based on active manganese dioxide promoted intramolecular cyclization

Journal

TETRAHEDRON
Volume 66, Issue 1, Pages 274-277

Publisher

PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.tet.2009.10.111

Keywords

9H-Pyrrolo[1,2-a]indol-9-one; 2-(1H-Pyrrol-1-yl)benzaldehyde; Intramolecular cyclization; Oxidation

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A series of 9H-pyrrolo[1,2-a]indol-9-ones have been prepared via in-situ sequential oxidation of [2-(1H-pyrrol-1-yl)phenyl]methanols promoted by active manganese dioxide. The procedure led to title compounds in good yields under mild conditions, without the need to isolate the intermediate aldehydes. (C) 2009 Elsevier Ltd. All rights reserved.

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