Catalytic Reductive Dehydration of Tertiary Amides to Enamines under Hydrosilylation Conditions
摘要:
Tertiary amides are efficiently reduced to their corresponding enamines under hydrosilylation conditions, using a transition-metal-free catalytic protocol based on t-BuOK (5 mol %) and (MeO)(3)SiH or (EtO)(3)SiH as the reducing agent. The enamines were formed with high selectivity in good-to-excellent yields.
A Facile One-Carbon Homologation of Aryl Aldehydes to Amides
作者:Wang Shen、Aaron Kunzer
DOI:10.1021/ol025608m
日期:2002.4.1
in good to excellent yields. Both electron-donating and electron-withdrawing substitutions on the aromatic rings are tolerated, and the reaction works well with hindered alkylamines. This simple homologation could find broad applications. [reaction: see text]
Direct use of dioxygen as an oxygen source: catalytic oxidative synthesis of amides
作者:Wei Wei、Xiao-Yu Hu、Xiao-Wei Yan、Qiang Zhang、Ming Cheng、Jian-Xin Ji
DOI:10.1039/c1cc14640h
日期:——
The first transition-metal-catalyzed directoxidative synthesis of amides by usingdioxygen as an oxygen source has been developed under mild conditions, in which DBU was used as the key additive. The present methodology, which utilizes dioxygen as an oxidant and oxygen source and cheap copper salts as catalysts, opens up an interesting and attractive avenue for the synthesis of amide functionality
Methods of inhibiting the replication of influenza viruses in a biological sample or patient, of reducing the amount of influenza viruses in a biological sample or patient, and of treating influenza in a patient, comprises administering to said biological sample or patient an effective amount of a compound represented by Structural Formula (I):
or a pharmaceutically acceptable salt thereof, wherein the values of Structural Formula (IA) are as described herein. A compound is represented by Structural Formula (IA) or a pharmaceutically acceptable salt thereof, wherein the values of Structural Formula (IA) are as described herein. A pharmaceutical composition comprises an effective amount of such a compound or pharmaceutically acceptable salt thereof, and a pharmaceutically acceptable carrier, adjuvant or vehicle.
A novel cesium carbonate promoted aerobic oxidation reaction to prepare N-substituted alpha-keto amides in the presence of catalytic amount of tetra-n-butylammonium bromide was described. This reaction provides a very simple and convenient route from easily available arylacetamides in good to high yields. (c) 2007 Elsevier Ltd. All rights reserved.