One-Pot Synthesis of α-Branched <i>N</i>-Acylamines via Titanium-Mediated Condensation of Amides, Aldehydes, and Organometallics
作者:Chunhui Dai、Julien Genovino、Bruce M. Bechle、Matthew S. Corbett、Chan Woo Huh、Colin R. Rose、Jianmin Sun、Joseph S. Warmus、David C. Blakemore
DOI:10.1021/acs.orglett.7b00082
日期:2017.3.3
A three-component, titanium-mediated synthesis of α-branched N-acylamines from commercial or readily accessible amides, aldehydes, and organometallic reagents is reported. The transformation proceeds under mild reaction conditions and tolerates a variety of functional groups (including nitrile, carbamate, olefin, basic amine, furan, and other sensitive heteroaromatics) to generate a large umbrella
HClO<sub>4</sub>-SiO<sub>2</sub> as an Efficient and Recyclable Catalyst for the Synthesis of Amide Derivatives
作者:Weibin Song、Lei Ma、Lihong Hu
DOI:10.1080/00397911.2010.517414
日期:2011.11.1
An efficient and clean procedure for amide alkylation is reported by direct condensation of equimolar amounts of benzylic and allylic alcohols with primary amides in the presence of silica perchloric acid (HClO4-SiO2). The direct condensation of secondary benzylic and allylic alcohols with benzamide, sulfonamide, 2-furamide, cinnamamide, and acrylamide has been achieved to afford the corresponding amide in excellent yields. The convenient, recyclable, and excellent yields of products are attractive features of this reaction.
DBU Catalysis of <i>N</i>,<i>N</i>′-Carbonyldiimidazole-Mediated Amidations
作者:Claude Larrivée-Aboussafy、Brian P. Jones、Kristin E. Price、Mark A. Hardink、Robert W. McLaughlin、Brett M. Lillie、Joel M. Hawkins、Rajappa Vaidyanathan
DOI:10.1021/ol9026599
日期:2010.1.15
1,8-Diazabicyclo[5.4.0]undec-7-ene (DBU) has been found to catalyze the amidation of acyl Imidazoles. The rate acceleration is especially evident with traditionally unreactive, electron-deficient anilines. DBU is readily available and offers safety and cost advantages over more commonly employed catalysts such as 1-hydroxybenzotriazole.