Abstract
A green and efficient method for the synthesis of 5-amino-1-aryl-1H-tetrazoles with excellent yields and high purity from secondary arylcyanamides is described. This method is completely green because no organic solvents or protic acid catalyst is used that can generate hydrazoic acid (HN3). In addition, it is a very clean method for acquiring 5-amino-1-aryl-1H-tetrazoles without generating 5-arylamino-1H(2H)-tetrazoles in most cases.
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Khalili, B., Darabi, F.S., Eftekhari-Sis, B. et al. Green chemistry: ZrOCl2·8H2O catalyzed regioselective synthesis of 5-amino-1-aryl-1H-tetrazoles from secondary arylcyanamides in water. Monatsh Chem 144, 1569–1572 (2013). https://doi.org/10.1007/s00706-013-1038-z
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DOI: https://doi.org/10.1007/s00706-013-1038-z