摘要:
Simple N-proline-based dipeptides with two N-H groups in combination with 2,4-dinitrophenol (DNP) catalyze the direct asymmetric aldol reactions of aldehydes with a broad range of ketones to furnish the corresponding aldol products in high yields (up to 99%) and with high enantioselectivities (up to 97%) and diastereoselectivities (up to > 99:1, anti/syn) at room temperature and in brine. (C) 2011 Elsevier Ltd. All rights reserved.