A Lewis Acid Palladium(II)-Catalyzed Three-Component Synthesis of α-Substituted Amides
作者:Tamara Beisel、Georg Manolikakes
DOI:10.1021/ol402949t
日期:2013.12.6
A Lewis acid palladium-catalyzed reaction of amides, aryl aldehydes, and arylboronic acids is described. This new method allows for a practical and generalsynthesis of α-substituted amides from simple, readily available building blocks.
Three-Component Synthesis of Amine Derivatives Using Benzylic and Allylic Alcohols as<i>N</i>-Alkylating Agents in the Absence of External Catalysts and Additives
作者:Hai-Hua Li、De-Jun Dong、Shi-Kai Tian
DOI:10.1002/ejoc.200800465
日期:2008.7
The direct employment of benzylic and allylic alcohols as N-alkylating agents provides a useful synthetic route for amine derivatives by avoiding the preactivation of the hydroxygroups of alcohols. Herein we report a novel by-product-catalyzed three-component synthesis of amine derivatives from readily available benzylic and allylic alcohols, acyl chlorides (chloroformates or sulfonyl chlorides),
The Suzuki–Miyaura coupling of α-(acetylamino)benzylboronic esters with aryl and alkenyl halides has been achieved using a Pd/P(t-Bu)3 catalyst with KF and H2O in 1,4-dioxane, giving α-substituted benzylamines in high yields.
Amberlyst-15 in Ionic Liquid: An Efficient and Recyclable Reagent for Nucleophilic Substitution of Alcohols and Hydroamination of Alkenes
作者:Ziyauddin S. Qureshi、Krishna M. Deshmukh、Pawan J. Tambade、Kishor P. Dhake、Bhalchandra M. Bhanage
DOI:10.1002/ejoc.201000456
日期:2010.11
The nucleophilicsubstitutionreaction of secondary alcohols and hydroamination of alkenes with amides, sulfonamides, carbamates, and amines using Amberlyst-15 immobilized in [Bmim][BF 4] (1-butyl-3-methylimidazolium tetrafluoroborate) ionic liquid as an efficient recyclable reagent is described. The solvent effect is prominent in the reaction, and the desired substitution products are obtained in
Phosphotungstic Acid Catalyzed Amidation of Alcohols
作者:Guan-Wu Wang、Ye-Bing Shen、Xue-Liang Wu
DOI:10.1002/ejoc.200800413
日期:2008.9
allylic, and simple aliphatic alcohols with sulfonamides, benzamide, and 4-nitroaniline in the presence of 12-phosphotungstic acid as an efficient, eco-friendly, cheap, and air- and moisture-tolerant catalyst for the construction of C–N bonds has been investigated. The amine derivatives were obtained in good yields (up to 98 %). The reusable nature of the 12-phosphotungstic acid makes this protocol more