Diverse catalytic reactivity of a dearomatized PN<sup>3</sup>P*–nickel hydride pincer complex towards CO<sub>2</sub> reduction
作者:Huaifeng Li、Théo P. Gonçalves、Qianyi Zhao、Dirong Gong、Zhiping Lai、Zhixiang Wang、Junrong Zheng、Kuo-Wei Huang
DOI:10.1039/c8cc05948a
日期:——
A dearomatized PN3P*–nickel hydridecomplex has been prepared using an oxidative addition process. The first nickel-catalyzed hydrosilylation of CO2 to methanol has been achieved, with unprecedented turnover numbers. Selective methylation and formylation of amines with CO2 were demonstrated by such a PN3P*–nickel hydridecomplex, highlighting its versatile functions in CO2 reduction.
使用氧化加成法制备了脱芳香化的PN 3 P *-氢化镍配合物。首次实现了镍催化的CO 2加氢硅烷化为甲醇,其转化率空前。此类PN 3 P *-氢化镍氢化物证明了胺与CO 2的选择性甲基化和甲酰化,突出了其在CO 2还原中的多功能性。
Cobalt Nanoparticles Apically Encapsulated by Nitrogen‐doped Carbon Nanotubes for Oxidative Dehydrogenation and Transfer Hydrogenation of N‐Heterocycles
作者:Dan Xu、Hong Zhao、Zhengping Dong、Jiantai Ma
DOI:10.1002/cctc.201901304
日期:2019.11.21
It is important to develop a highlyactive and stable transition‐metalcatalyst with dual‐functional properties in the reversible transformations between various saturated and unsaturated N‐heterocycles. Herein, we prepared the cobalt nanoparticles (Co NPs) apically encapsulated by the N‐dopedcarbon nanotubes catalyst (Co@NCNTs) via a multiple pyrolysis of low‐cost dicyandiamide and cobalt (II) acetylacetonate
Pd/C-Catalyzed Reductive Formylation of Indoles and Quinolines Using Formic Acid
作者:Béla Török、Aditya Kulkarni、Ryan Gianatassio
DOI:10.1055/s-0030-1259978
日期:2011.4
from the corresponding indoles and quinolines. In the first step, the heterocyclic compounds are reduced to the corresponding dihydro or tetrahydroproducts by a Pd/C-catalyzed transfer hydrogenation using formic acid as a hydrogen donor. In the second step, nitrogen is formylated by formic acid to afford the final products in very good isolated yields. catalytic transfer hydrogenation - indoles - quinolines
We herein describe an efficient iron‐catalyzed selectiveN‐methylation and N‐formylation of amines with CO2 and silane using mono‐phosphine as ligand. With commercially available [CpFe(CO)2]2 as catalyst, Fe‐catalyzed methylation of amines was achieved with triphenylphosphine as a ligand. Using tributylphosphine as a ligand, Fe‐catalyzed formylation of amines was realized at a lower temperature. The