Chiral-Anion-Mediated Asymmetric Heck–Matsuda Reaction of Acyclic Alkenyl Alcohols
作者:Tao Zhang、Wen-Ao Li、Hong-Cheng Shen、Shu-Sen Chen、Zhi-Yong Han
DOI:10.1021/acs.orglett.1c00152
日期:2021.2.19
Acyclic internal alkenes are a class of challenging substrates in asymmetric Heck-type reactions due to difficulties related to both reactivity and selectivity control. Employing acyclic alkenyl alcohols, an asymmetric Heck–Matsuda reaction is developed through the strategy of chiral anion phase transfer. Various chiral ketones could be obtained in high levels of enantioselectivity. A catalytic amount
Asymmetric Umpolung Hydrogenation and Deuteration of Alkenes Catalyzed by Nickel
作者:Siyu Guo、Xiuhua Wang、Jianrong Steve Zhou
DOI:10.1021/acs.orglett.0c00112
日期:2020.2.7
enantioselectivity, using acetic acid or water as the hydrogen source and indium powder as electron donor. The scope of alkenes herein include α,β-unsaturated esters, nitriles, and ketones as well as allylicalcohols. Asymmetric deuteration of α,β-unsaturated esters is also achieved with deuterated water, the cheapest deuterium source.
Enantioselective Total Synthesis of Erogorgiaene: Applications of Asymmetric Cu-Catalyzed Conjugate Additions of Alkylzincs to Acyclic Enones
作者:Cesati、Judith de Armas、Amir H. Hoveyda
DOI:10.1021/ja0305407
日期:2004.1.1
The first enantioselectivesynthesis of erogorgiaene (1), an inhibitor of mycobacterium tuberculosis, is disclosed. The total synthesis highlights the utility of asymmetricconjugateadditions (ACA) of alkylzincs to acyclic alpha,beta-unsaturated ketones catalyzed by peptidic phosphine ligands and (CuOTf)(2).C(6)H(6). Moreover, several critical attributes of this catalytic C-C bond-forming reaction