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V. Compounds with Boron–Hydrogen Bonds

  • Page ID
    24670
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    Phosphine-boranes (15) (Figure 2) are a group of compounds that have the abil­ity to react selectively with xanthates in the presence of compounds containing bromine or chlorine (but not iodine).11 For example, cyclo­hexyl bromide is recovered without change when it is added to the reaction shown in eq 14; in contrast, ­tri-n-butyltin hydride and most other hydrogen-atom transfers used in radical reactions readily dehalo­genate bromides. If this lack of reactivity between alkyl bromides and phosphine-boranes extends to halo­gen­ated carbo­hydrates, it will make possible their chemo­selective deoxy­gen­ation without dehalogenation.

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    This page titled V. Compounds with Boron–Hydrogen Bonds is shared under a All Rights Reserved (used with permission) license and was authored, remixed, and/or curated by Roger W. Binkley and Edith R. Binkley.