Chiral Ytterbium Complex-Catalyzed Direct Asymmetric Aldol-Tishchenko Reaction: Synthesis ofanti-1,3-Diols
作者:Jacek Mlynarski、Bartosz Rakiel、Maciej Stodulski、Agata Suszczyńska、Jadwiga Frelek
DOI:10.1002/chem.200600357
日期:2006.10.25
The asymmetric aldol-Tishchenko reaction of aromatic aldehydes with aliphatic and aromatic ketones has been developed as an efficient strategy for the synthesis of anti-1,3-diols in good yield with high diastereocontrol and good levels of enantioselectivity. This domino-type reaction is catalyzed by a chiral ytterbium complex that promotes both the aldol reaction through enolization of the carbonyl
已开发出芳族醛与脂族和芳族酮的不对称aldol-Tishchenko反应,这是一种高效合成抗-1,3-二醇的有效策略,具有高非对映异构控制性和良好的对映选择性。这种多米诺型反应是由手性complex配合物催化的,该手性配合物通过羰基化合物的烯醇化和醛醇中间体的埃文斯-季申科还原而促进醛醇反应。还对所得二醇的立体化学进行了研究,并最终通过使用CD技术进行了证明。