Synthesis of Amidines Using <i>N</i>-Allyl Ynamides. A Palladium-Catalyzed Allyl Transfer through an Ynamido−π-Allyl Complex
作者:Yu Zhang、Kyle A. DeKorver、Andrew G. Lohse、Yan-Shi Zhang、Jian Huang、Richard P. Hsung
DOI:10.1021/ol802844z
日期:2009.2.19
A de novo transformation of N-allyl-N-sulfonyl ynamides to amidines is described featuring a palladium-catalyzed N-to-C allyl transfer via ynamido-palladium-pi-allyl complexes.
A Divergent Mechanistic Course of Pd(0)-Catalyzed Aza-Claisen Rearrangement and Aza-Rautenstrauch-Type Cyclization of <i>N</i>-Allyl Ynamides
作者:Kyle A. DeKorver、Richard P. Hsung、Andrew G. Lohse、Yu Zhang
DOI:10.1021/ol100446p
日期:2010.4.16
complexes is described that features isolation of a unique silyl ketenimine via aza-Claisen rearrangement, which can be accompanied by an unusual thermal N-to-C 1,3-Ts shift in the formation of tertiary nitriles and a novel cyclopentenimine formation via a palladium-catalyzed aza-Rautenstrauch-type cyclization pathway.