Hydroxyapatite-supported silver nanoparticles (AgHAP) acted as a highly efficient reusable heterogeneous catalyst for hydration of diverse nitriles, including heteroaromatic ones, into amides in water.
was monitored in vitro. The impact of the type and configuration of the δ‐substituents was probed and it was found that amino‐substituted surrogates yield the corresponding lactams. A carboxamide analogue was transformed into a glutarimide unit, which can be found in many natural products. Our findings illuminate the biosynthesis of glutarimide‐bearing polyketides and also demonstrate the utility of this
Enzymatic nitrile hydrolysis catalyzed by nitrilase ZmNIT2 from maize. An unprecedented β-hydroxy functionality enhanced amide formation
作者:Chandrani Mukherjee、Dunming Zhu、Edward R. Biehl、Rajiv R. Parmar、Ling Hua
DOI:10.1016/j.tet.2006.04.069
日期:2006.6
To explore the synthetic potential of nitrilase ZmNIT2 from maize, the substrate specificity of this nitrilase was studied with a diverse collection of nitriles. The nitrilase ZmNIT2 showed high activity for all the tested nitriles except benzonitrile, producing both acids and amides. For the hydrolysis of aliphatic, aromatic nitriles, phenylacetonitrile derivatives and dinitriles, carboxylic acids
Nickel-Catalyzed 1,2-Diarylation of Simple Alkenyl Amides
作者:Joseph Derosa、Roman Kleinmans、Van T. Tran、Malkanthi K. Karunananda、Steven R. Wisniewski、Martin D. Eastgate、Keary M. Engle
DOI:10.1021/jacs.8b11942
日期:2018.12.26
A nickel-catalyzed conjunctive cross-coupling of simple alkenyl amides with aryl iodides and arylboronic esters is reported. The reaction is enabled by an electron-deficient olefin (EDO) ligand, dimethyl fumarate, and delivers the desired 1,2-diarylated products with excellent regiocontrol. Under optimized conditions, a wide range of amides derived from 3-butenoic acid, 4-pentenoic acid, and allyl
报道了简单烯基酰胺与芳基碘化物和芳基硼酸酯的镍催化连接交叉偶联。该反应由缺电子烯烃 (EDO) 配体富马酸二甲酯实现,并提供具有出色区域控制的所需 1,2-二芳基化产物。在优化条件下,衍生自 3-丁烯酸、4-戊烯酸和烯丙胺的多种酰胺都是相容的底物。该方法代表了由天然酰胺官能团引导的区域控制 1,2-二芳基化的第一个例子。计算分析揭示了潜在的底物结合模式和 EDO 配体在还原消除步骤中的作用。
Synthesis of γ-hydroxy α,β-unsaturated amides by base-induced isomerization of epoxy amides
作者:Peter B. Brooks、Charles M. Marson
DOI:10.1016/s0040-4020(98)00519-5
日期:1998.8
Treatment of 3,4-epoxyamides with LDA affords γ-hydroxy-α,β-unsaturatedamides, usually with high (E)-selectivity. The 3,4-epoxyamides were prepared by the epoxidation of β,γ-unsaturated amides with meta-chloroperbenzoic acid.