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Phosphine catalysts trichlorosilane enantioselective

In the asymmetric hydrosilylation of 1,3-cyclohexadiene 38 (Scheme 10, Table 4), catalyzed by chiral ferrocenylphosphines 5 and 40, the enantioselectivity is higher with phenyldifluorosilane than that with trichlorosilane or methyldichlorosilane (entries 1—4). The reaction of 38 with phenyldifluorosilane in the presence of a palladium catalyst coordinated with ferrocenylphosphine 40b gave allylsilane (A)-39c with 77% ee.58,59 The use of (j3-N-sulfonylaminoalkyl (phosphine 35a for the reaction of 38 with methyldichlorosilane exhibited the same level of asymmetric induction (entries 5-6).53 In this asymmetric hydrosilylation, combination of trichlorosilane and... [Pg.824]

See other pages where Phosphine catalysts trichlorosilane enantioselective is mentioned: [Pg.517]    [Pg.83]    [Pg.824]    [Pg.829]    [Pg.546]    [Pg.72]    [Pg.126]    [Pg.50]    [Pg.8]    [Pg.83]   


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Enantioselective catalysts

Enantioselectivity catalysts

Phosphines enantioselectivity

Trichlorosilane

Trichlorosilane, enantioselective

Trichlorosilanes

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