Deoxygenation Nickel boride

Hydrogenation and Deoxygenation. Nickel boride, produced in situ by the action of sodium borohydride on nickel(II) chloride, has been used to carry out a two-step hydrogenolysis of allylic alcohols via reductive cleavage of the trimethylsilyl ethers. Tertiary alcohols may be deoxygenated in reasonable yields by means... [Pg.208]

Dichloro-2,2-difluoroethylene, 105 (Diethylamino)sulfur trifluoride, 110 Reduction reactions (see also Deoxygenation, Reductive. . . ) of acetals and ketals Dibromoalane, 237 Diisobutylaluminum hydride, 237 Triethylsilane-Tin(IV) chloride, 237 of acetates and other esters to alkanes Nickel boride, 197 Triphenylsilane, 334 of acyl halides to alcohols Sodium cyanoborohydride-Tin(II) chloride, 280... [Pg.371]

Sodium hydrogen telluride reacts with epoxides 41 by a Sn2 mechanism giving the respective telluroalcohols. These intermediates are easily converted into the corresponding alcohols 42 by treatment with nickel boride.97 In contrast, epoxides suffer deoxygenation when treated with alkali 0,0-dialkyl phosphorotellurolates, to give the corresponding olefins 43 (Scheme 21).98,99... [Pg.599]

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