Palladium-catalyzed decarboxylative aminocarbonylation with alkynoic acid and tertiary amine for the synthesis of alkynyl amide
作者:Muhammad Aliyu Idris、Myungjin Kim、Jeung Gon Kim、Sunwoo Lee
DOI:10.1016/j.tet.2019.04.030
日期:2019.8
We developed a method for the synthesis of alkynyl amides via the carbonylation of alkynoic acids and C-N activation of tertiary amines. The reaction of alkynoic acid and tertiary amine with carbonmonoxideusing a palladium catalyst in the presence of oxygen, KI, and K3PO4, gave the desired alkynyl amides in good yields.
我们开发了一种通过炔酸的羰基化和叔胺的CN活化合成炔基酰胺的方法。在氧,KI和K 3 PO 4的存在下,使用钯催化剂使炔酸和叔胺与一氧化碳反应,以良好的收率得到所需的炔基酰胺。
N-triflyl-propiolamides: Preparation and transamidation reactions
作者:Vito A. Fiore、Gerhard Maas
DOI:10.1016/j.tet.2019.05.027
日期:2019.6
alkynes, with triflic anhydride (Tf2O) and b) from terminal alkynes and an aryl or alkyl isocyanate followed by Tf2O in a consecutive one-pot reaction. The title compounds are bench-stable and insensitive to water and alcohols but amenable to transamidation reactions with a wide range of amine nucleophiles. Conversely, they are excellent reagents for the propynoylation of ammonia, primary and secondary
Esters and Amides from ActivatedAlcohols using Manganese(IV) Dioxide: Tandem Oxidation Processes
作者:Richard J. Taylor、Jonathan S. Foot、Hisashi Kanno、Gerard M. Giblin
DOI:10.1055/s-2003-39163
日期:——
with sodium cyanide in THF-methanol or in methanol alone for the direct conversion of activated alcohols into methyl esters. Ethyl and isopropyl esters can also be prepared. Similarly, use of manganese(IV) dioxide and sodium cyanide in THF containing ammonia or primary amines can be used to convert alcohols into the corresponding amides. Several activated alcohols and one non-activated alcohol example
Macrocyclic hepatitis C serine protease inhibitors
申请人:Miao Zhenwei
公开号:US20050153877A1
公开(公告)日:2005-07-14
The present invention relates to compounds of Formula I, II or Ill, or a pharmaceutically acceptable salt, ester, or prodrug, thereof:
wherein W is a substituted or unsubstituted heterocyclic ring system. The compounds inhibit serine protease activity, particularly the activity of hepatitis c virus (HCV) NS3-NS4A protease. Consequently, the compounds of the present invention interfere with the life cycle of the hepatitis c virus and are also useful as antiviral agents. The present invention further relates to pharmaceutical compositions comprising the aforementioned compounds for administration to a subject suffering from HCV infection. The invention also relates to methods of treating an HCV infection in a subject by administering a pharmaceutical composition comprising the compounds of the present invention.
Palladium-Catalyzed Oxidative <i>N</i>-Dealkylation/Carbonylation of Tertiary Amines with Alkynes to α,β-Alkynylamides
作者:Rajendra S. Mane、Bhalchandra M. Bhanage
DOI:10.1021/acs.joc.6b00386
日期:2016.6.17
The first highly effective Pd/C-catalyzed oxidative N-dealkylation/carbonylation of various aliphatic as well as cyclic tertiaryamines with alkynes has been described. The selective sp3 C–N bond activation of tertiaryamines at the less steric side using O2 as a sole oxidant and a plausible reaction pathway for the reaction are discussed. The general and operationally simple methodology provides an