4 LiAlH, + 4 + 4 HNMeBn - RAR' R AR' (2) THF, -2OOC Conditions were optimized by using n-butyl 2-naphthyl ketone (2) as a substrate due to ready measurement of the resulting enantiomeric excess by chiral stationary-phase ... (1) Presented at the 187th National Meeting of the American Chem- ical Society, St. Louis, MO, April 12,1984. A preliminary account of this work was presented at the 28th National Organic Chemistry Symposium, Bozeman, MT, June 23, 1983. (2) ...