4.4 Article

Microwave-assisted facile synthesis of [a]-annelated pyrazolopyrroloindoles via intramolecular azomethine imine 1,3-dipolar cycloaddition

Journal

TETRAHEDRON LETTERS
Volume 55, Issue 19, Pages 3064-3069

Publisher

PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.tetlet.2014.03.134

Keywords

Microwave-assisted; 1,3-Dipolar cycloaddition; Azomethine imine; Pyrazolopyrroloindole; Stereoselective

Funding

  1. Council of Scientific and Industrial Research (CSIR), New Delhi, India
  2. UGC, New Delhi, India

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The synthesis of [a]-annelated pyrazolopyrroloindoles via intramolecular 1,3-dipolar cycloaddition of in situ generated azomethine imine from N-allylated indole-2-carboxaldehyde, in regio- and stereoselective manner by using microwave irradiation is described. A one-pot strategy for the expedient synthesis of pyrazolopyrroloindoles has been developed. (C) 2014 Elsevier Ltd. All rights reserved.

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