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Triphenylsilyl group

Replacement of the trimethylsilyl group by a triphenylsilyl group gave exclusive addition in the /8-position for all sulphones studied214. [Pg.424]

A monosilylhydrazine can only be obtained when bulky substituents such as triphenylsilyl groups stabilize the hdyrazine10 ... [Pg.3]

The first asymmetric ene reaction catalyzed by a chiral Lewis acid appeared in a report by Maruoka, Hoshino, Shirasaka, and Yamamoto in 1988 and utilized the aluminum complex 98 [61]. The presence of the triphenylsilyl groups on the 3 and 3 positions of the catalyst was crucial—it was found that the diphenyl analog 302 gave racemic product 301 from the reaction of chloral with 2-thiophenylpropene whereas catalyst 98 gave 301 in 57 % ee (Sch. 37). [Pg.325]

Ph2C=NCH2Li can be used for simple aminomethylation and, by subsequent reaction with SOCI2 or by introduction of a triphenylsilyl group into the reagent, for the synthesis of A-alkenylimines. Lithiated A-benzylidenebenzylamine... [Pg.174]

Electroreductive Block Copolymerization Using Triphenylsilyl Group-Terminated Polysilane... [Pg.810]

The triphenylsilyl group-terminated polysilanes can be synthesized by the electroreductive... [Pg.810]

Electrosynthesis of Polysilane, Scheme 6 Electroreductive block copolymerization with dibutyldichlorosilane (lb) using triphenylsilyl group-terminated polymethylphenylsilane (2a) as a macroinitiator... [Pg.811]

General Considerations. Like other bulky trialkylsilyl groups, the triphenylsilyl group was introduced to serve as a hydrolytically stable protecting group for alcohols. The hydroxyl functionality can be easily derivatized using Ph3SiCl in the presence of a tertiary amine or imidazole as a base (eqs 1 and 2). ... [Pg.182]

Protecting Group. Triphenylsilane is used in certain cases for the preparation of triphenylsilyl ethers, which serve as alcohol protecting groups. The triphenylsilyl group is considerably more stable (about 400 times) than the TMS group toward acidic hydrolysis. ... [Pg.734]

MacMillan et al. improved the methodology with another BINOL-derivative bearing ortho triphenylsilyl groups 110 (Scheme 39.31). The substrate scope was extended, and the protocol was applied for a variety of methyl ketones and aryl amines. ... [Pg.1193]

See other pages where Triphenylsilyl group is mentioned: [Pg.47]    [Pg.17]    [Pg.403]    [Pg.361]    [Pg.151]    [Pg.31]    [Pg.31]    [Pg.234]    [Pg.241]    [Pg.144]    [Pg.292]    [Pg.480]    [Pg.110]    [Pg.232]    [Pg.138]    [Pg.226]    [Pg.213]    [Pg.228]    [Pg.454]    [Pg.29]    [Pg.615]    [Pg.37]    [Pg.810]    [Pg.811]    [Pg.811]    [Pg.812]    [Pg.316]    [Pg.30]    [Pg.610]    [Pg.557]    [Pg.100]    [Pg.318]   
See also in sourсe #XX -- [ Pg.31 ]



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Triphenylsilyl

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