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Intermolecular reactions double bond migration

A similar but different mechanism has also been proposed for the intermolecular CO-SiCaC reaction of phenylacetylene catalyzed by Rh4(CO)i2, which gives silylcyclo-pentenone 9a and 9b (Scheme 7.5) [14]. In this mechanism /9-silylethenyl-[Rh] intermediate Il.lg, arising from insertion of the alkyne moiety into the Si-[Rh] bond, reacts sequentially with a second molecule of phenylacetylene and CO, to afford <5-silylpenta-dienoyl-[Rh] complex II. Ih- Finally, carbocyclization followed by double-bond migration gives 9 a and 9 b. [Pg.132]

See other pages where Intermolecular reactions double bond migration is mentioned: [Pg.684]    [Pg.561]    [Pg.234]    [Pg.193]    [Pg.684]    [Pg.306]    [Pg.182]    [Pg.491]    [Pg.712]    [Pg.502]    [Pg.182]    [Pg.232]    [Pg.511]    [Pg.144]    [Pg.771]    [Pg.339]    [Pg.26]    [Pg.967]   
See also in sourсe #XX -- [ Pg.1143 , Pg.1147 , Pg.1529 ]



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