Journal of the American Chemical Society 2005-04-27

Hydroboration with pyridine borane at room temperature.

Julia M Clay, Edwin Vedejs

文献索引：J. Am. Chem. Soc. 127 , 5766-5767, (2005)

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摘要

Treatment of pyridine borane (Py.BH3) with iodine, bromine, or strong acids affords activated Py.BH2X complexes that are capable of hydroborating alkenes at room temperature. Evidence is presented for an unusual hydroboration mechanism involving leaving group displacement. In contrast to THF.BH3, hydroboration with Py.BH2I selectively affords the monoadducts. The crude hydroboration products are converted into synthetically useful potassium alkyltrifluoroborate salts upon treatment with methanolic KHF2.