Journal
COMPTES RENDUS CHIMIE
Volume 19, Issue 3, Pages 306-313Publisher
ELSEVIER FRANCE-EDITIONS SCIENTIFIQUES MEDICALES ELSEVIER
DOI: 10.1016/j.crci.2015.11.016
Keywords
5-Substituted 1H-tetrazoles; [3+2] cycloaddition; Lead chloride; Recyclability; X-ray analysis
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Funding
- CSIR HRDG New Delhi, India [09/013(0541)/2014-EMR-I]
- Banaras Hindu University, Varanasi, India
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A simple, mild and efficient method is developed for the synthesis of 5-substituted 1H-tetrazoles. Out of three used Pb(II) catalysts, lead chloride (PbCl2) has been found to be an efficient catalyst for [3+2] cycloaddition of NaN3 with aromatic and aliphatic nitriles to afford 5-substituted 1H-tetrazoles. The catalyst is reusable up to four cycles with consistent activity. The cost effectiveness and easy availability of the catalyst, simple methodology, excellent yield and easy work-up are the additional advantages. (C) 2015 Academie des sciences. Published by Elsevier Masson SAS. All rights reserved.
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