Et3B-induced radical addition of R3SnH to acetylenes and its application to cyclization reaction
作者:Kyoko Nozaki、Koichiro Oshima、Kiichiro Uchimoto
DOI:10.1021/ja00242a068
日期:1987.4
Mercuric Triflate Catalyzed Hydroxylative Carbocyclization of 1,6-Enynes
作者:Mugio Nishizawa、Veejendra K. Yadav、Mariusz Skwarczynski、Hiroko Takao、Hiroshi Imagawa、Takumichi Sugihara
DOI:10.1021/ol034201u
日期:2003.5.1
[GRAPHICS]Hg(OTf)(2) exhibits remarkable catalytic activity for the hydroxylative cyclization of 1,6-enynes. The present procedure should involve a sequence of mercuration of a terminal alkyne, carbocyclization, hydration, and protodemercuration that regenerates the catalyst.
Using Triethynylphosphine Ligands Bearing Bulky End Caps To Create a Holey Catalytic Environment: Application to Gold(I)-Catalyzed Alkyne Cyclizations
作者:Atsuko Ochida、Hideto Ito、Masaya Sawamura
DOI:10.1021/ja066800c
日期:2006.12.1
and catalytic uses of phosphinoalkynes bearing bulky end caps at the alkyne termini, that is, tris[(triarylsilyl)ethynyl]phosphines are reported. The most salient feature of the new phosphines is the holey molecular shape possessing a deep and large-scale metal-binding cavity. The holey phosphines displayed remarkable rate enhancement in the gold(I)-catalyzedsix- and seven-memberedring forming cyclizations