Tetrazole-Substituted Five, Six, and Seven-Membered Cyclic Amines Bearing Perfluoroalkyl Groups - Efficient Synthesis by Azido-Ugi Reaction
作者:Olga I. Shmatova、Valentine G. Nenajdenko
DOI:10.1002/ejoc.201300861
日期:2013.10
azido-Ugi reactions was studied. It was shown that the reaction allows access to five-, six- and seven-membered perfluoroalkylated cyclic amines connected to a tetrazole ring. The scope and limitations of this approach are discussed. When benzyl isocyanide was used in the azido-Ugi reaction, it was shown that the tetrazole products could easily be debenzylated by catalytic hydrogenation to form 1H-tetrazoles
Six-Component Azido-Ugi Reaction: from Cyclic Ketimines to Bis-Tetrazole-Derived 5-7-Membered Amines
作者:Irina V. Kutovaya、Danil P. Zarezin、Olga I. Shmatova、Valentine G. Nenajdenko
DOI:10.1002/ejoc.201900244
日期:2019.4.24
The six‐component azido‐Ugi reaction with 2‐substituted 5–7‐membered imines leads to mono‐ or bis‐tetrazole derivatives depending on the starting imines. The reaction is very general regarding isocyanide structure and enables preparation of 1,5‐disubstituted bis‐tetrazole derivatives connected with 5–7‐membered cyclic amine fragments. Subsequent catalytic debenzylation provides the corresponding 1H‐tetrazoles