Regioselective Cobalt-Catalyzed Formation of Bicyclic 3- and 4-Aminopyridines
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资源简介：
Bimolecular cobalt-catalyzed [2 + 2 + 2] cycloadditions between yne−ynamides and nitriles afford bicyclic 3- or 4-aminopyridines in up to 100% yield. The high regioselectivity observed depends on the substitution pattern at the starting ynamide. Aminopyridines bearing TMS and Ts groups are efficiently deprotected in an orthogonal fashion.
创建时间：
2011-04-15
