Development of Ketone-Based Brominating Agents (KBA) for the Practical Asymmetric α-Bromination of Aldehydes Catalyzed by Tritylpyrrolidine
作者:Aika Takeshima、Mio Shimogaki、Taichi Kano、Keiji Maruoka
DOI:10.1021/acscatal.0c01596
日期:2020.6.5
Ketone-based brominating agents (KBA), ortho-substituted 2,2,2-tribromoacetophenones, have been developed, and the highly enantioselective and practical α-bromination of aldehydes with KBA was achieved. The reaction could be performed in the presence of only 0.1–1 mol % of catalyst without using a halogenated solvent at 0 °C and was found to be scalable.
已经开发了基于酮的溴化剂(KBA),即邻位取代的2,2,2-三溴苯乙酮,并且实现了KBA对醛的高度对映选择性和实用性。该反应可以在仅0.1–1 mol%的催化剂存在下进行,而无需在0°C下使用卤化溶剂,并且发现该方法可扩展。