Copper(I)-catalyzed coupling reaction of aryl boronic acids with N,O-acetals and N,N-aminals under atmosphere leading to α-aryl glycine derivatives and diarylmethylamine derivatives
摘要:
We demonstrated a copper(I)-catalyzed coupling reaction of aryl boronic acids with N,O-acetals and N,N-aminals leading to the synthesis of alpha-aryl glycines and diarylmethylamines. Under an ambient atmosphere, this catalytic system could be applied to the activation of a C(sp(3))-O bond of N,O-acetals with an ester and an aryl group, or without a coordinating substituent, as well as to a C(sp(3))-N bond of N,N-aminals. (C) 2015 Elsevier Ltd. All rights reserved.
[EN] QUINUCLIDINE ESTERS OF 1-AZAHETEROCYCLYLACETIC ACID AS ANTIMUSCARINIC AGENTS, PROCESS FOR THEIR PREPARATION AND MEDICINAL COMPOSITIONS THEREOF<br/>[FR] ESTERS DE QUINUCLIDINE ET D'ACIDE 1-AZAHÉTÉROCYCLYLACÉTIQUE UTILISÉS COMME AGENTS ANTIMUSCARINIQUES, PROCÉDÉ POUR LEUR PRÉPARATION ET COMPOSITIONS MÉDICINALES CORRESPONDANTES
申请人:CHIESI FARMA SPA
公开号:WO2013098145A1
公开(公告)日:2013-07-04
The invention relates to compounds of formula (I), wherein A, R1, R2, X, m and n are as defined in the specification, as selective M3 receptor antagonists, process for their preparation, composition comprising them and the therapeutic use thereof. Said compounds may be used in the treatment of, inter alia, a respiratory disease such as asthma and COPD.
Bulk Gold-Catalyzed Reactions of Diazoalkanes with Amines and O2 to Give Enamines
作者:Yibo Zhou、Robert J. Angelici、L. Keith Woo
DOI:10.1007/s10562-010-0339-7
日期:2010.6
particles, catalyzes reactions of diazoalkanes E(H)C=N2, where E is CO2Et or PhC(O), with amines R1R2NH and O2 to give enamine products (R1R2N)(E)C=CH(E) in 58–94% yield. The reactions are proposed to occur by initial formation of surface-bound (E)(H)C: carbene groups that are attacked by nucleophilic amines. The enamine products are very different than those obtained in reactions catalyzed by homogeneous
Facile Approach to Natural or Non-Natural Amino Acid Derivatives: Me<sub>3</sub>SiCl-Promoted Coupling Reaction of Organozinc Compounds with N,O-Acetals
Quinuclidine esters of 1-azaheterocyclylacetic acid as antimuscarinic agents, process for their preparation and medicinal compositions thereof
申请人:Chiesi Farmaceutici S.p.A.
公开号:US08748613B2
公开(公告)日:2014-06-10
Compounds of formula (I):
wherein A, R1, R2, X, m, and n are as defined in the specification, are selective M3 receptor antagonists and may be used in the treatment of, inter alia, a respiratory disease such as asthma and COPD.
A new copper(II) bromide/N-methylmorpholine N-oxide (NMO)-promoted method for α-amination of esters under continuous-flow conditions, with reduced catalyst loading is reported. The α-amino esters are precursors for the synthesis of α-amino acids. This method provides α-amino esters in 58–83% yields. The desired Cu(II)Br catalyst is regenerated by in situ oxidation of Cu(I)Br in the presence of NMO
报道了一种新的溴化铜( II )/ N-甲基吗啉N-氧化物(NMO)促进的连续流动条件下酯的α-胺化方法,并减少了催化剂负载量。α-氨基酯是合成α-氨基酸的前体。该方法提供 α-氨基酯,产率为 58-83%。所需的 Cu( II )Br 催化剂通过在 NMO 存在下原位氧化 Cu( I )Br来再生。