Add time:09/28/2019 Source:sciencedirect.com
A highly stereoselective dibromination of diphenylphosphorylallenes using N-Bromosuccinimide (cas 128-08-5) (NBS) as bromine reagent is developed, wherein a variety of 2-bromo-substituted allyl bromides were obtained in good to excellent yields under mild reaction conditions. Moreover, the dibromination reaction allows a gram-scale synthesis of 2-bromo-substituted allyl bromides, and the products could be successfully transformed to various valuable derivatives.
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