Reductive amination of various ketones and aldehydes by transferhydrogenation under aqueous conditions has been developed, by using cyclometallated iridium complexes as catalysts and formate as hydrogen source. The pH value of the solution is shown to be critical for a high catalytic chemoselectivity and activity, with the best pH value being 4.8. In comparison with that in organic solvents, the reductive
DMSO methylates a broad range of amines in the presence of formic acid, providing a novel, green and practical method for aminemethylation. The protocol also allows the one‐pot transformation of aromatic nitro compounds into dimethylated amines in the presence of a simple iron catalyst.
A Facile One-Pot Process for the Formation of Hindered Tertiary Amines
作者:Zhouyu Wang、Dong Pei、Yu Zhang、Chao Wang、Jian Sun
DOI:10.3390/molecules17055151
日期:——
convenient method was developed for the preparation of hinderedtertiaryamines via direct reductive amination of ketones with secondary aryl amines, using trichlorosilane as reducing agent and tetramethylethylenediamine (TMEDA) as organic Lewis base activator. A broad range of ketones were reacted with N-methylaniline to afford the corresponding tertiaryamine products in high yield. An open transition model
A biphosphine copolymer encapsulated single-site Rh catalyst for heterogeneous regioselective hydroaminomethylation of alkenes
作者:Kang Zhao、Hongli Wang、Xinzhi Wang、Xinjiang Cui、Feng Shi
DOI:10.1039/d2cc02469a
日期:——
organic polymer catalyst with in situ encapsulated single-site Rh (Rh@CPOL-DPMphos&p-3vPPh3) was developed and employed in heterogeneous hydroaminomethylation of alkenes, affording the corresponding amines in good to excellent regioselectivity and catalytic activity by a one-pot method. The combined actions of hierarchical pore confinement and the biphosphine ligand derived from the POP catalyst contributed
开发了一种新型多孔有机聚合物催化剂,原位包封单中心 Rh (Rh@CPOL-DPMphos& p -3vPPh 3 ),并将其用于烯烃的非均相氢氨基甲基化反应,从而使相应的胺具有良好至优异的区域选择性和催化活性。 -锅法。分级孔限制和源自 POP 催化剂的双膦配体的联合作用有助于提高区域选择性。