Route to Chiral Tetrahydrofuran Acetals via Pd-Catalyzed Asymmetric Allylic Cycloaddition of Vinyl Epoxides with β-Keto Enol Ethers
作者:Meiqi Li、Yiming Liu、Yong Jian Zhang
DOI:10.1021/acs.orglett.2c02437
日期:2022.9.23
An efficient method for the synthesis of functionalized chiral tetrahydrofuran (THF) acetals via Pd-catalyzed asymmetric allylic cycloaddition has been developed. With a palladium catalyst coordinated by a chiral phosphine ligand, the protocol is enabled to combine readily available vinyl epoxides and β-keto enol ethers to produce THF acetals bearing three stereocenters in a broad substrate scope with
开发了一种通过 Pd 催化的不对称烯丙基环加成合成功能化手性四氢呋喃 (THF) 缩醛的有效方法。使用由手性膦配体协调的钯催化剂,该协议能够结合现成的乙烯基环氧化物和 β-酮烯醇醚,以生产在广泛的底物范围内具有三个立体中心的 THF 缩醛,具有均匀高水平的对映选择性和非对映选择性。