Dynamic kinetic asymmetric arylation and alkenylation of ketones

• 成果类型: Article
• 署名作者: Ruan, Lin-Xin; Sun, Bo; Liu, Jia-Ming; Shi, Shi-Liang
• 署名单位: Chinese Academy of Sciences; University of Chinese Academy of Sciences, CAS; Shanghai Institute of Organic Chemistry, CAS
• 刊物名称: SCIENCE
• ISSN/ISSBN: 0036-13333
• DOI: 10.1126/science.ade0760
• 发表日期: 2023-02-17
• 页码: 662-670
• 关键词: tertiary alcohols; hydrogenation; RESOLUTION; aldehydes; nucleophiles; alkylation; vinylation; amines; esters

摘要

Despite the importance of enantioenriched alcohols in medicinal chemistry, total synthesis, and materials science, the efficient and selective construction of enantioenriched tertiary alcohols bearing two contiguous stereocenters has remained a substantial challenge. We report a platform for their preparation through the enantioconvergent, nickel-catalyzed addition of organoboronates to racemic, nonactivated ketones. We prepared several important classes of a,b-chiral tertiary alcohols in a single step with high levels of diastereo-and enantioselectivity through a dynamic kinetic asymmetric addition of aryl and alkenyl nucleophiles. We applied this protocol to modify several profen drugs and to rapidly synthesize biologically relevant molecules. We expect this nickel-catalyzed, base-free ketone racemization process to be a widely applicable strategy for the development of dynamic kinetic processes.