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  • Title: Intramolecular Aminoboration of Unfunctionalized Olefins.
    Author: Yang CH, Zhang YS, Fan WW, Liu GQ, Li YM.
    Journal: Angew Chem Int Ed Engl; 2015 Oct 19; 54(43):12636-9. PubMed ID: 26331979.
    Abstract:
    A direct and catalyst-free method for the intramolecular aminoboration of unfunctionalized olefins is reported. In the presence of BCl3 (1 equiv) as the sole boron source, intramolecular aminoboration of sulfonamide derivatives of 4-penten-1-amines, 5-hexen-1-amines, and 2-allylanilines proceeded readily without the use of any catalyst. The boronic acids obtained after hydrolysis could be converted into the corresponding pinacol borates in a straightforward manner by treatment with pinacol under anhydrous conditions.
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