Synthesis of aminopyrazoles from sydnones and ynamides
作者:T. Wezeman、J. Comas-Barceló、M. Nieger、J. P. A. Harrity、S. Bräse
DOI:10.1039/c6ob02518h
日期:——
Aminopyrazoles are prepared from readily accessible sydnones and sulfonyl ynamides using either a copper-mediated sydnone alkyne cycloaddition (CuSAC) or in situ generated strained cyclic ynamides.