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Potassium triphenylborohydride

Yoon and Kim have prepared potassium triphenylborohydride (KPhjBH) and examined the reducing ability toward alkyl halides. n-Octyl iodide is reduced within 1 h at 0 °C, whereas n-octyl bromide takes 24 h for complete reduction. Secondary bromides are inert under these conditions. [Pg.806]

Potassium triisopropoxyborohydride, a mild selective reducing agent, rapidly converted ketones and aldehydes to the corresponding alcohols, while many common functional groups were inert.The reaction of potassium hydride with triphenylborane produced the triphenylborohydride, which is highly hindered and which exhibited excellent chemoselectivity between ketones. Cyclohexanone was reduced in preference to cyclopentanone (97 3) and 4-heptanone (99.4 0.6), while methyl ketones were more reactive than 4-heptanone (2-heptanone, 94 6 acetophenone, 97.8 2.2). [Pg.18]


See other pages where Potassium triphenylborohydride is mentioned: [Pg.911]    [Pg.412]    [Pg.211]    [Pg.911]    [Pg.412]    [Pg.211]   
See also in sourсe #XX -- [ Pg.774 , Pg.911 ]




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Potassium triphenylborohydride alkyl halides

Potassium triphenylborohydride reduction

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