Facile Synthesis of Chiral
<scp>α‐Hydroxy</scp>
Ketones by a
<scp>Ni‐Catalyzed</scp>
Multicomponent Hydrometallation–
<scp>CO</scp>
Insertion–Enantioconvergent Alkylation Cascade
作者:Jian Chen、Gao Deng、You Wang、Shaolin Zhu
DOI:10.1002/cjoc.202200491
日期:2023.2
selective generation of the desired product can be challenging. Herein, we report that a highly chemo-, regio- and enantioselective reductive hydrocarbonylation of alkenes has been achieved using a chloroformate ester as a source of CO. A wide range of structurally diverse α-hydroxyketones, privileged structural elements in bioactive molecules and useful building blocks, were obtained from such reactions
NiH 催化的多组分烯烃还原加氢官能化是一种有吸引力但探索不足的快速增加分子复杂性的方法。在此过程中,选择性生成所需产品可能具有挑战性。在此,我们报道了使用氯甲酸酯作为 CO 来源实现了烯烃的高度化学选择性、区域选择性和对映选择性还原烃基化。多种结构多样的 α-羟基酮、生物活性分子中的特殊结构元素和有用的构建块,是从这种具有高对映体纯度的反应中获得的。
Nickel-Catalyzed Enantioselective Coupling of Acid Chlorides with α-Bromobenzoates: An Asymmetric Acyloin Synthesis
restricted to using preformed stoichiometric acyl-metal reagents. Moreover, the (catalytic) enantioselective variants remain unexplored, and the asymmetricsynthesis of chiral acyloins has met significant challenges in organicsynthesis. Here, we uncover the highly enantioselective coupling of acid chlorides with α-bromobenzoates by nickel catalysis for producing enantioenriched protected α-hydroxy ketones
Convergent Catalytic Asymmetric Synthesis of Esters of Chiral Dialkyl Carbinols
作者:Ze-Peng Yang、Gregory C. Fu
DOI:10.1021/jacs.0c01324
日期:2020.3.25
Because chiral dialkyl carbinols, as well as their derived esters, are significant as intermediates and end points in fields such as organic, pharmaceutical, and biological chemistry, the development of efficient approaches to their asymmetric synthesis is an important endeavor. In this report, we describe a method for the direct catalytic enantioselective synthesis of such esters, beginning with an