Palladium-catalyzed formation and stereoselective isomerization of 5-vinyloxazolines. Application to the formal synthesis of (S,S)-4-amino-3-hydroxy-5-phenylpentanoic acid
作者:Gregory R. Cook、P. Sathya Shanker
DOI:10.1016/s0040-4039(98)00534-6
日期:1998.5
Vinyloxazolidinones have been found to undergo Pd(0)-catalyzed ionization followed by loss of carbon dioxide and subsequent cyclization to form vinyloxazolines. The reaction occurred under mild conditions, and enhancement of diastereomeric ratios with chiral substrates was obtained. 4-Benzyl-5-vinyloxazoline prepared by this method has been utilized in the stereoselective synthesis of (S,S)-4-amino-3-hydroxy-5-phenylpentanoic acid (AHPPA). (C) 1998 Elsevier Science Ltd. All rights reserved.