Journal of the American Chemical Society

Palladium-catalyzed cyclizations of polyenynes. A palladium zipper

BM Trost, Y Shi

文献索引：Trost, Barry M.; Shi, Yian Journal of the American Chemical Society, 1993 , vol. 115, # 21 p. 9421 - 9438

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被引用次数: 115

摘要

Abstract: The cycloisomerization of polyenynes with a catalyst derived from Pd (O), acetic acid, and a ligand to polycycles depends upon the juxtaposition of unsaturation. The process involves the stages of initiation (by addition of Pd-H to an acetylene), propagation (by intramolecular carbopalladation), and termination (by 0-hydrogen elimination). With 2- homopropargylated 1, s-and 1, ddienes, monocyclizations via 5-ex0 and 6-endo modes ...