The iridium-catalyzed highly chemoselective hydrogenation of amides to amines has been developed. Using a well-defined iridium catalyst bearing a P(O)C(O)P pincer ligand combined with B(C6F5)3, the C–O cleavage products are formed undermildreactionconditions. The reaction provides a new method for the preparation of amines from amides in good yield with high selectivity.
已经开发了铱催化的酰胺高度化学选择性氢化成胺的方法。使用带有P(O)C(O)P钳形配体与B(C 6 F 5)3结合的明确定义的铱催化剂,在温和的反应条件下可形成C–O裂解产物。该反应提供了一种以高收率和高选择性从酰胺制备胺的新方法。
Boron Lewis Acid Promoted Ruthenium-Catalyzed Hydrogenation of Amides: An Efficient Approach to Secondary Amines
作者:Ming-Lei Yuan、Jian-Hua Xie、Qi-Lin Zhou
DOI:10.1002/cctc.201600635
日期:2016.10.6
The hydrogenation of amides to amines has been developed by using the catalyst [Ru(H)2(CO)(Triphos)] (Triphos=1,1,1‐tri(diphenylphosphinomethyl)ethane) and catalytic boron Lewis acids such as B(C6F5)3 or BF3⋅Et2O as additives. The reaction provides an efficient method for the preparation of secondary amines from amides in good yields with high selectivity.
[EN] DIARYL ETHERS AS OPIOID RECEPTOR ANTAGONIST<br/>[FR] DIARYLE ETHERS UTILISES EN TANT QU'ANTAGONISTES DE RECEPTEUR OPIOIDES
申请人:LILLY CO ELI
公开号:WO2004026305A1
公开(公告)日:2004-04-01
A compound of the formula (I) wherein the variables X1 to X10, R1 to R7 including R3', E, v, y, z, A and B are as described, or a pharmaceutically acceptable salt, solvate, enantiomer, racemate, diastereomer or mixtures thereof, useful for the treatment, prevention or amelioration of obesity and Related Diseases is disclosed.
Enabling Reductive C–N Cross-Coupling of Nitroalkanes and Boronic Acids by Steric Design of P(III)/P(V)═O Catalysts
作者:Gen Li、Yuzuru Kanda、Seung Youn Hong、Alexander T. Radosevich
DOI:10.1021/jacs.2c01487
日期:2022.5.11
bond-forming reductive coupling of nitroalkanes with arylboronicacids and esters is reported. The method shows excellent chemoselectivity for the nitro/boronicacid substrate pair, allowing the synthesis of N-(hetero)arylamines rich in functionalization. The identification of a sterically reduced phosphetane catalyst capable of productive coupling in the P(III)/P(V)═O redox manifold is the key enabling development
N-Heterocyclic carbene copper complex catalyzed Chan-Evans-Lam reactions of arylboronic acids with azoles and amines
作者:Mia Guo、Bing Chen、Kaixian Chen、Shunan Guo、Feng-Shou Liu、Chang Xu、Hua-Gang Yao
DOI:10.1016/j.tetlet.2022.154074
日期:2022.9
An efficient protocol of Chan-Evans-Lam reactions involving arylboronic acids and azole and amine derivatives was developed based on a series of N-heterocyclic carbene copper (Cu-NHC) complexes as the precatalysts. The relationship between the catalyst structure and catalytic properties was investigated in detail. The results demonstrated that the modification of NHC backbone with acenaphthyl group