Highly stereoselective synthesis of 1,3-aminoalcohols via Mannich reactions
摘要:
Diastereoselective synthesis of beta-amino ketones by a one-pot Mannich reaction and their subsequent reduction afforded sterically congested enantiomerically pure 1,3-aminoalcohols in high diastereoselectivity: dr up to >98:<2 over two steps. The absolute configurations of the newly created stereogenic centers were assigned by NMR spectroscopy and chemical correlation. (C) 1999 Elsevier Science Ltd. All rights reserved.