Ev. Dehmlow et al., MILD AND FAST DEOXYGENATION OF AROMATIC CARBONYL-COMPOUNDS BY DIMETHYLAMINE BORANE TITANIUM TETRACHLORIDE, Synthetic communications, 26(8), 1996, pp. 1467-1472
The title reaction proceeds in dichloromethane at room temperature wit
hin 1/2 hour. Benzylic alcohols are intermediates. TiCl4 can be replac
ed by other ( although less effective) Lewis acids such as AlCl3, BF3-
ether, FeCl3.