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- W1996623703 abstract "A novel rhodium-catalyzed cycloisomerization has been developed which converts various acyclic enynes to their cyclic diene isomers with endoselectivity. Both [RhCl(COD)]2/P(4-FC6H4)3 and RhCl(PPh3)3 catalyst systems are effective in promoting the C−C bond-forming cyclization of enynes to furnish carbo- and heterocycles in good to excellent yield. Deuterium labeling studies suggest that the reaction proceeds through the formation of a rhodium vinylidene followed by subsequent [2 + 2] cycloaddition with the alkene and ring-opening of the resulting rhodacyclobutane. These mechanistic studies reevaluate a previously proposed reaction pathway and lead to the discovery of a new cycloisomerization reaction that involves migration of silyl and selenyl substituents at the alkyne of enyne substrates upon cyclization." @default.
- W1996623703 created "2016-06-24" @default.
- W1996623703 creator A5018225049 @default.
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- W1996623703 date "2005-07-01" @default.
- W1996623703 modified "2023-10-16" @default.
- W1996623703 title "Cycloisomerization of Enynes via Rhodium Vinylidene-Mediated Catalysis" @default.
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- W1996623703 doi "https://doi.org/10.1021/ja052775j" @default.
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