Sd. Rychnovsky et Bm. Bax, Enantioselective reduction of esters: synthesis of optically active alpha-acetoxy ethers, TETRAHEDR L, 41(19), 2000, pp. 3593-3596
An enantioselective reduction and acetylation of esters to alpha-acetoxy et
hers is described. Reduction with a NaAlH4-ephedrine reagent followed by in
situ acetylation gives 2 with good enantiomeric excess. This reaction is l
imited in scope, but it demonstrates that enantioselective reductions of es
ters are possible. (C) 2000 Elsevier Science Ltd. All rights reserved.