1 Drug Discovery, Johnson & Johnson Pharmaceutical Research and Development, L.L.C., Welsh and McKean Roads, Spring House, Pennsylvania 19477-0776, USA. mschulz@prdus.jnj.com
[reaction: see text] The addition of azido trimethylsilane to arylnitrileboronate esters is shown to proceed rapidly in dimethoxyethane to give aryltetrazoleboronate esters in moderate to good yields, with dibutyltin oxide as catalyst.