High-pressure effect on organic reactions in fluorophobic media
作者:G�rard Jenner、Badra Gacem
DOI:10.1002/poc.601
日期:2003.5
interactions was examined in Diels–Alder reactions and the conjugate addition of amines to acrylonitrile at different pressures. Its magnitude is lower than for other solvophobic media (water, ethylene glycol). Activation volumes determined in perfluorohexane are less negative for Diels–Alder cycloadditions owing to reduced fluorophobic interactions under pressure, in line with a former study. At variance
A general catalytic β-C–H carbonylation of aliphatic amines to β-lactams
作者:Darren Willcox、Ben G. N. Chappell、Kirsten F. Hogg、Jonas Calleja、Adam P. Smalley、Matthew J. Gaunt
DOI:10.1126/science.aaf9621
日期:2016.11.18
straightforward palladium-catalyzed process exploits a distinct reaction pathway, wherein a sterically hindered carboxylate ligand orchestrates an amine attack on a palladium anhydride to transform aliphatic amines into β-lactams. The reaction is successful with a wide range of secondary amines and can be used as a late-stage functionalization tactic to deliver advanced, highlyfunctionalized amine products
CO 率先制造 β-内酰胺环 应变的 β-内酰胺环是青霉素和其他一些药物的关键特征。威尔考克斯等人。通过一氧化碳与仲胺的钯催化偶联,设计了一条通向这些四元环基序的通用途径。庞大的羧酸盐配体似乎有助于将 CO 初步掺入 Pd 酐中,然后通过 C-H 活化被胺攻击以建立闭环。与之前的 C-H 活化先于 CO 插入的方案相比,这种方法拓宽了底物范围。科学,这个问题 p。851 庞大的羧酸盐配体引导钯将一氧化碳和仲胺偶联成用于药物研究的多功能基序。胺的合成和功能化方法对于各种化学应用具有本质的重要性。我们提出了一种通用的碳氢键活化过程,该过程结合了现成的脂肪胺和原料气一氧化碳,以形成合成通用的增值酰胺产品。操作简单的钯催化过程利用了独特的反应途径,其中空间位阻的羧酸盐配体协调对钯酐的胺攻击,将脂肪胺转化为 β-内酰胺。该反应可成功用于多种仲胺,并可用作后期官能化策略,以提供可用于药物研究和其他领域
1H-imidazole-1-acetamides
申请人:Sterling Drug Inc.
公开号:US04962120A1
公开(公告)日:1990-10-09
N-[(alkylamino)alkyl]-4,5-diaryl-1H-imidazole-1-acetamides useful for treating cardiac arrhythmias in mammals, are prepared by reacting a lower-alkyl ester of a diaryl imidazole-1-acetic acid with an appropriate diamine.
Beta-amino heterocyclic dipeptidyl peptidase inhibitors for the treatment or prevention of diabetes
申请人:——
公开号:US20040254167A1
公开(公告)日:2004-12-16
The present invention is directed to compounds which are inhibitors of the dipeptidyl peptidase-IV enzyme (“DP-IV inhibitors”) and which are useful in the treatment or prevention of diseases in which the dipeptidyl peptidase-IV enzyme is involved, such as diabetes and particularly type 2 diabetes. The invention is also directed to pharmaceutical compositions comprising these compound and the use of these compounds and compositions in the prevention or treatment of such diseases in which the dipeptidyl peptidase-IV enzyme is involved.
NOVEL COPOLYMER, NOVEL COPOLYMER-CONTAINING COMPOSITION, LAMINATE BODY, METHOD OF PRODUCING METAL FILM-COATED MATERIAL, METAL FILM-COATED MATERIAL, METHOD OF PRODUCING METALLIC PATTERN-BEARING MATERIAL AND METALLIC PATTERN-BEARING MATERIAL
申请人:KANO Takeyoshi
公开号:US20100247880A1
公开(公告)日:2010-09-30
There is provided a polymer containing a unit represented by the following Formula (1), and a unit represented by following Formula (2). In Formula (1) and Formula (2), R
1
to R
5
each independently represent a hydrogen atom, a substituted or unsubstituted alkyl group; R
6
represents an unsubstituted alkyl group, alkenyl group, alkynyl group or an aryl group; V and Z each independently represent a single bond, a substituted or unsubstituted divalent organic group, an ester group, an amide group or an ether group, and L
1
and L
2
each independently represent a substituted or unsubstituted divalent organic group.