Journal
TETRAHEDRON LETTERS
Volume 51, Issue 10, Pages 1404-1406Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.tetlet.2010.01.024
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improved conditions for converting amides into 1,5-disubstituted tetrazoles are described. The optimum reaction conditions [diisopropyl azodicarboxylate (DIAD), diphenylphosphoryl azide (DPPA), and diphenyl-2-pyridyl phosphine in THF at 45 degrees C] converted sterically hindered amides to their corresponding tetrazoles in good yield. (C) 2010 Elsevier Ltd. All rights reserved.
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