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.
Electrochemical Hydrogenation with Gaseous Ammonia
作者:Jin Li、Lingfeng He、Xu Liu、Xu Cheng、Guigen Li
DOI:10.1002/anie.201813464
日期:2019.2.4
serves as high‐energy‐density hydrogen‐storage material. It is important to develop new reactions able to utilize ammonia as a hydrogen source directly. Herein, we report an electrochemical hydrogenation of alkenes, alkynes, and ketones using ammonia as the hydrogen source and carbon electrodes. A variety of heterocycles and functional groups, including for example sulfide, benzyl, benzyl carbamate, and
Nickel-catalyzed asymmetric transfer hydrogenation of conjugated olefins
作者:Siyu Guo、Peng Yang、Jianrong (Steve) Zhou
DOI:10.1039/c5cc01632k
日期:——
Asymmetrictransferhydrogenation of electron-deficient olefins is realized with nickel catalysts supported by strongly [sigma]-donating bisphosphines. Deuterium labeling experiments points to a reaction sequence of formate decarboxylation, asymmetric hydride insertion...
<i>N</i>,<i>N</i>-Dimethylformamide as Hydride Source in Nickel-Catalyzed Asymmetric Hydrogenation of α,β-Unsaturated Esters
作者:Siyu Guo、Jianrong (Steve) Zhou
DOI:10.1021/acs.orglett.6b02662
日期:2016.10.21
Asymmetric transfer hydrogenation of α,β-unsaturatedesters is realized by using a nickel/bisphosphine catalyst and N,N-dimethylformamide (DMF) as the hydride source.