Synthesis of Polyynes by In Situ Desilylative Bromination and Palladium-Catalyzed Coupling: (7-(Benzyloxy)Hepta-1,3,5-Triynyl)Triisopropylsilane
作者:Soonho Hwang、Hee Ryong Kang、Sanghee Kim
DOI:10.1002/0471264229.os086.22
日期:2009.12.18
A New, Iterative Strategy for the Synthesis of Unsymmetrical Polyynes: Application to the Total Synthesis of 15,16-Dihydrominquartynoic Acid
作者:Sanghee Kim、Shinae Kim、Taeho Lee、Hyojin Ko、Deukjoon Kim
DOI:10.1021/ol0484963
日期:2004.9.1
[reaction: see text] A new iterativestrategy for the synthesis of unsymmetrically substituted polyynes has been developed. The starting bromoalkyne is homologated by one acetylene unit through palladium-catalyzed cross-coupling with a TIPS-protected terminal acetylene and a subsequent in situ one-pot AgF-mediated desilylative bromination. The utility of this new synthetic method is demonstrated by