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Dienol ditriflates

The idiospermuline synthesis (127,128) (Scheme 18) required preparation of the differentially functionalized dihydroisoindigo derivative 214, followed by the crucial alkylation of the lithium dienolate with enantiopure ditriflate 215, to selectively produce the desired pentacycle 216 (four distinct Ci-symmetric dialkylation products are possible). It was found that the stereoselection in this step is crucially dependent on the choice of solvent, temperature, and concentration, to deliver the dielectrophile from the... [Pg.214]

See other pages where Dienol ditriflates is mentioned: [Pg.112]    [Pg.112]    [Pg.113]    [Pg.112]    [Pg.112]    [Pg.113]    [Pg.210]   
See also in sourсe #XX -- [ Pg.112 ]

See also in sourсe #XX -- [ Pg.112 ]



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