... b S. Mori, T. Aoyama, T. Shioiri; For related orthoamination procedures see, Tetrahedron Lett., 25 (1984), p. 429. c JN Reed, V. Snieckus; For related orthoamination procedures see, Tetrahedron Lett., 24 (1983), p. 3795 The procedure of Reed and Snieckus employs -toluenesulfonyl azide. While they have not encountered any difficulties using this reagent (V. Snieckus, personal ...