Regioselective N1‐methylation of 1H‐tetrazoles with methyl 2,2,2‐trichloroacetimidate

An efficient, mild, and regioselective synthesis of substituted 1‐methyl‐1 H ‐tetrazole using methyl 2,2,2‐trichloroacetimidate is described. The substrate scope of the methodology has been established with wide variety of tetrazoles. N 1‐Methylated tetrazoles were synthesized with high yields (85%–97%).