Ambient Hydrogenation and Deuteration of Alkenes Using a Nanostructured Ni‐Core–Shell Catalyst
作者:Jie Gao、Rui Ma、Lu Feng、Yuefeng Liu、Ralf Jackstell、Rajenahally V. Jagadeesh、Matthias Beller
DOI:10.1002/anie.202105492
日期:2021.8.16
selective hydrogenation and deuteration of a variety of alkenes is presented. Key to success for these reactions is the use of a specific nickel-graphitic shell-based core–shell-structured catalyst, which is conveniently prepared by impregnation and subsequent calcination of nickel nitrate on carbon at 450 °C under argon. Applying this nanostructured catalyst, both terminal and internal alkenes, which
提出了各种烯烃的选择性氢化和氘化的通用方案。这些反应成功的关键是使用特定的镍-石墨壳基核壳结构催化剂,该催化剂可以通过浸渍碳上的硝酸镍并随后在氩气下于 450 °C 下煅烧来方便地制备。应用这种纳米结构催化剂,具有工业和商业重要性的末端烯烃和内部烯烃在环境条件下(室温,使用1巴氢气或1巴氘)进行选择性氢化和氘化,从而获得相应的烷烃和氘。标记烷烃的收率良好至极好。通过克级反应以及高效的催化剂回收实验证明了这种镍基加氢方案的合成效用和实用性。
Air-Stable α-Diimine Nickel Precatalysts for the Hydrogenation of Hindered, Unactivated Alkenes
作者:Nadia G. Léonard、Paul J. Chirik
DOI:10.1021/acscatal.7b03909
日期:2018.1.5
isotopologues of the alkanes, signaling chain running processes that are competitive with productive hydrogenation. Stoichiometric studies, titration, and deuteriumlabeling experiments identified that the borane reagent served the dual role of reducing nickel(II) bis(carboxylate) to the previously reported nickel hydride dimer [(iPrDI)NiH]2 and increasing the observed hydrogenation activity. Performing the
空气稳定的双(辛酸镍(II)镍(II),Ni(O 2 CC 7 H 15)2和α-二亚胺配体,iPr DI或Cy ADI(iPr DI = [2,6- i Pr 2 -C 6 H ^ 3 N = C(CH 3)] 2,赛扬ADI = [C 6 H ^ 11 N = C(CH 3)] 2)与频哪醇硼烷(HBPin)生成用于氢化受阻,基本未官能化的烯烃的高活性催化剂。氢化了一系列的三和四取代的烯烃,并证明了以数克为单位的1-苯基-1-环己烯氢化的台式操作程序,代表了这种挑战性类别的镍催化氢化反应的催化剂活性和范围的进步。烯烃。用iPr DI用原位生成的镍催化剂对1,2-二甲基茚进行氘化可独家提供1,2- syn - d 2-二甲基茚满。使用环状三取代烯烃(例如1-甲基茚和甲基环己烯),在D 2的4 atm下用原位生成的镍催化剂进行氘化产生了烷烃的多个氘代同位素,这标志着与生产性氢化竞争的链运行
A new approach for bio-jet fuel generation from palm oil and limonene in the absence of hydrogen
作者:Jingjing Zhang、Chen Zhao
DOI:10.1039/c5cc06601h
日期:——
A new solution using a carbon-chain filling strategy is proposed to convert C10 terpene and lipids to jet fuel ranged hydrocarbons with aromatic hydrocarbon ingredients in the absence of hydrogen.