摘要:
Chiral allyltitaniums having an amino substituent at the C-4 position are prepared from optically active allylic alcohol derivatives 1 and Ti(O-i-Pr)(4)/2i-PrMgCl reagent, which, in turn, react with aldehydes regio-and stereoselectively to afford 3-amino-2-vinylalkanols in excellent yields. (C) 1997 Elsevier Science Ltd.