Polynuclear nonfused bis(1,3,4-oxadiazole)-containing systems
摘要:
Nonfused bis-1,3,4-oxadiazoles were synthesized by reaction of 5-substituted mono- and bis-tetrazoles with mono- and dicarboxylic acid chlorides. The results of kinetic studies showed that the transformation of tetrazoles into 1,3,4-oxadiazoles is accelerated by I to 2 orders of magnitude on addition of a catalytic amount of dimethylformamide, triethylamine, or pyridine.
The curtius reaction in the synthesis of noncondensed polynuclear azoles
作者:L. I. Vereshchagin、T. V. Golobokova、F. A. Pokatilov、A. G. Proidakov、O. N. Verkhozina、A. I. Smirnov、V. N. Kizhnyaev
DOI:10.1007/s10593-011-0781-5
日期:2011.7
Polynuclear noncondensed systems in which the azole rings are bound by urethane or carbamide fragments have been synthesized by the reaction of azole carboxylic acid azides with heterocyclic alcohols.