Use of carborane carboxylic acids in the synthesis of boronated nitrogen heterocycles
作者:Valentina A. Ol’shevskaya、Anton V. Makarenkov、Elena G. Kononova、Pavel V. Petrovskii、Mikhail S. Grigoriev、Valery N. Kalinin
DOI:10.1016/j.poly.2012.12.035
日期:2013.3
of 5-substituted carborane tetrazoles was synthesized by acylation of 5-phenyl-1-H-tetrazole with the available o- and m-carborane carboxylic acid chlorides or o- and m-carborane acetic acid chlorides in the presence of pyridine. Successive thermolysis of the carborane tetrazoles in toluene followed by the extrusion of nitrogen resulted in a series of previously unknown carborane 1,3,4-oxadiazoles