Synthesis of condensed heterocycles via cyclopropylimine rearrangement of cyclopropylazoles
作者:Yury V. Tomilov、Dmitry N. Platonov、Aleksandr E. Frumkin、Dmitry L. Lipilin、Rinat F. Salikov
DOI:10.1016/j.tetlet.2010.07.096
日期:2010.9
Thermal cyclopropylimine rearrangement of cyclopropylazoles into condensed heterocycles and factors affecting the regioselectivity and conversion are reported. A method of conducting the reaction in the absence of solvents is developed. A series of 2-cyclopropylazoles, including novel examples, is synthesized and their transformations into the corresponding condensed heterocyclic compounds (2,3-dihydro-1H-pyrroles