Enantioselective rhodium-catalyzed addition of arylboronic acids to <i>N</i>-heteroaryl ketones: synthesis of α-hydroxy acids
作者:Jinbin Zhu、Zhenyue Li、Jiaqi Li、Duanshuai Tian、Ronghua Xu、Zhiyong Tan、Zhengwang Chen、Wenjun Tang
DOI:10.1039/d2sc05907j
日期:——
The enantioselective addition of arylboronic acids to N-heteroaryl ketones provides a convenient access to chiral α-heteroaryl tertiary alcohols, yet addition reactions of this type have been challenging due to catalyst deactivation. In this report, an efficient rhodium-catalyzed addition of arylboronic acids to N-heteroaryl ketones is established, affording a variety of valuable α-heteroaryl alcohols
芳基硼酸与N-杂芳基酮的对映选择性加成提供了获得手性α-杂芳基叔醇的便利途径,但由于催化剂失活,此类加成反应一直具有挑战性。在本报告中,建立了一种有效的铑催化芳基硼酸与N-杂芳基酮的加成反应,提供了多种具有优异官能团相容性的有价值的α-杂芳基醇。含有两个蒽基的 WingPhos 配体的使用对于这种转变至关重要。特别是,通过使用低至 0.3 mol% 的 Rh 负载量,形成了一系列具有优异ee值和产率的手性苯并恶唑基取代的叔醇,这可以作为在反应后提供一系列手性 α-羟基酸的实用方案。水解。