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Triethylsilane—Titanium chloride

Reduction of Acetals. Reductions of acetals of 2,4-pentanediol can provide (after removal of the chiral auxiliary by oxidation and 3 elimination) secondary alcohols with good enan-tioselectivity. The choice of reagents dictates the configuration of the final product. Use of Dibromoalane gives products from selective syn cleavage of the acetal while Triethylsilane/Titanium(IV) Chloride gives the more usual anti cleavage products (eq 2). ... [Pg.468]

Triethylsilane-Titanium (IV) chloride, (C2H5)3SiH- IlCl4 (1). [Pg.367]

Tributyltinpotassium, 257 Tributyl(triethylsilyl)tin, 211 Tributyl(trimethylsilyl)tin, 212 Triethylsilane-Tin(IV) chloride, 237 Trimethylstan nylmethyllithium, 331 3-Trimethylstannylpropionaldehyde dimethyl acetal, 118 Triphenyltin hydride, 244, 316, 335 Titanium Compounds Alkyltriisopropoxytitanium reagents,... [Pg.415]

Triethylsilane in 3M ethereal Lithium Perchlorate solution effects the reduction of secondary allylic alcohols and acetates (eq 18). The combination of triethylsilane and Titanium(IV) Chloride is a particularly effective reagent pair for the selective reduction of acetals. Treatment of ( )-frontalin with this pair gives an 82% yield of tetrahydropyran products with a cis. trans ratio of 99 1 (eq 19). This exactly complements the 1 99 product ratio of the same products obtained with Diisobutylaluminum Hydride. ... [Pg.491]

See other pages where Triethylsilane—Titanium chloride is mentioned: [Pg.125]    [Pg.338]    [Pg.125]    [Pg.102]    [Pg.222]    [Pg.587]    [Pg.631]    [Pg.112]    [Pg.783]    [Pg.729]    [Pg.468]    [Pg.265]   
See also in sourсe #XX -- [ Pg.338 ]



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Titanium chloride

Triethylsilane

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