Enantioselective reduction of 2- and 3-bromoacetylbenzofurans with (-)-B-ch
lorodiisopinocampheylborane produced the corresponding bromohydrins which w
ere transformed into (S)-(benzofuran-2-yl)oxirane of 70% ee and (S)-(benzof
uran-3-yl)oxirane of 71% ee, respectively. The epoxides treated with primar
y alkylamines gave the corresponding (S)-1-(benzofuran-2- and -3-yl)-2-(alk
ylamino)ethanols.