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镍催化烯基醚的远程不对称氢烷基化反应合成手性二烷基甲醇醚

Nickel-Catalyzed Remote Asymmetric Hydroalkylation of Alkenyl Ethers to Access Ethers of Chiral Dialkyl Carbinols.

作者信息

Wang Jia-Wang, Li Zhen, Liu Deguang, Zhang Jun-Yang, Lu Xi, Fu Yao

机构信息

Hefei National Research Center for Physical Sciences at the Microscale, iChEM, CAS Key Laboratory of Urban Pollutant Conversion, Anhui Province Key Laboratory of Biomass Clean Energy, University of Science and Technology of China, 230026 Hefei, China.

School of Plant Protection, Anhui Agricultural University, Hefei, Anhui 230036, China.

出版信息

J Am Chem Soc. 2023 May 10;145(18):10411-10421. doi: 10.1021/jacs.3c02950. Epub 2023 Apr 26.

Abstract

Site- and enantio-selective alkyl-alkyl bond formation is privileged in the retrosynthetic analysis due to the universality of sp-hybridized carbon atoms in organic molecules. Herein, we report a nickel-catalyzed remote asymmetric hydroalkylation of alkenyl ethers via synchronous implementation of alkene isomerization and enantioselective C(sp)-C(sp) bond formation. Regression analysis of catalyst structure-activity relationships accelerates the rational ligand modification through modular regulation. This reaction has several advantages for synthesizing chiral dialkyl carbinols and their ether derivatives, including the broad substrate scope, good functional group tolerance, excellent regioselectivity (>20:1 regioisomeric ratio), and high enantioselectivity (up to 95% enantiomeric excess).

摘要

由于有机分子中sp杂化碳原子的普遍性,位点和对映体选择性的烷基-烷基键形成在逆合成分析中具有优势。在此,我们报道了一种通过烯烃异构化和对映选择性C(sp)-C(sp)键形成的同步实施,实现镍催化的烯基醚远程不对称氢烷基化反应。催化剂结构-活性关系的回归分析通过模块化调节加速了合理的配体修饰。该反应在合成手性二烷基甲醇及其醚衍生物方面具有多个优点,包括底物范围广、官能团耐受性好、区域选择性优异(区域异构体比例>20:1)和对映选择性高(对映体过量高达95%)。

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