Three-component reaction of ketals, isonitriles, and trimethylsilyl azide

[Figure not available: see fulltext.] It was demonstrated that a ZnCl2-catalyzed three-component reaction of ketals, isonitriles, and trimethylsilyl azide led to 1,5-disubstituted tetrazoles in moderate to high yields. © 2017, Springer Science+Business Media New York.