York, N. Y., 1962, and references cited there.(3) For preliminary communications, see (a) S.

Recently H. C. Brown and co-workers have described an excellent method for the anti-Markownikoff hydration of double bonds, through conversion to the trialkylboranc and subsequent oxidation. The method used for carrying out the hydroboration step involved passing diborane (generated from sodium borohydride and boron trifluoride etherate in diglyme) into a solution of the olefin in an ether1 or alternatively allowing the olefin to react in situ with sodium borohydride and aluminum chloride2 or boron trifluoride3 in diglyme solution.

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