Improved conditions for converting sterically hindered amides to 1,5-disubstituted tetrazoles
作者:Gretchen M. Schroeder、Sydney Marshall、Honghe Wan、Ashok V. Purandare
DOI:10.1016/j.tetlet.2010.01.024
日期:2010.3
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 °C] converted stericallyhinderedamides to their corresponding tetrazoles in good yield.