The present invention relates to a method of producing ε-caprolactam, the method including the following steps (A) and (B): (A) a step of reacting 5-cyanovaleramide with hydrogen in an aqueous solvent in a presence of a hydrogenation catalyst to obtain a 5-cyanovaleramide hydrogenation reaction mixture; (B) a step of heating the 5-cyanovaleramide hydrogenation reaction mixture at a temperature of 180° C. or higher and 300° C. or lower in an aqueous solvent to obtain ε-caprolactam.
Hydration of nitriles using a metal–ligand cooperative ruthenium pincer catalyst
作者:Beibei Guo、Johannes G. de Vries、Edwin Otten
DOI:10.1039/c9sc04624k
日期:——
Nitrile hydration provides access to amides that are important structural elements in organic chemistry. Here we report catalytic nitrile hydration using rutheniumcatalysts based on a pincer scaffold with a dearomatized pyridine backbone. These complexes catalyze the nucleophilic addition of H2O to a wide variety of aliphatic and (hetero)aromatic nitriles in tBuOH as solvent. Reactions occur under
腈水合提供了获得酰胺的途径,酰胺是有机化学中重要的结构元素。在这里,我们报告了使用基于具有脱芳构化吡啶骨架的钳形支架的钌催化剂催化腈水合。这些配合物在作为溶剂的t BuOH 中催化 H 2 O 与多种脂肪族和(杂)芳香族腈的亲核加成。反应在没有添加剂的温和条件(室温)下发生。提出了一种腈水合机制,该机制由腈的金属-配体协同结合引发。
PROCESS FOR PRODUCTION OF AMIDE COMPOUNDS
申请人:Kanou Makoto
公开号:US20110021819A1
公开(公告)日:2011-01-27
The present invention provides a method for producing an amide compound from a nitrile compound using a biocatalyst that realizes low cost, energy saving and low environmental burdens. The production method of the amide compound of the present invention is a method for producing an amide compound from a nitrile compound using a biocatalyst in a reactor, wherein the nitrile compound is reacted with the biocatalyst to produce the amide compound under such stirring conditions that the stirring power requirement is in the range of 0.08 to 0.7 kW/m
3
.
Chemistry by Nanocatalysis: First Example of a Solid-Supported RAPTA Complex for Organic Reactions in Aqueous Medium
作者:Sergio E. García-Garrido、Javier Francos、Victorio Cadierno、Jean-Marie Basset、Vivek Polshettiwar
DOI:10.1002/cssc.201000280
日期:2011.1.17
A ruthenium–arene–PTA (RAPTA) complex has been supported for the first time on an inorganic solid, that is, silica‐coated ferrite nanoparticles. The resulting magnetic material proved to be a general, very efficient and easily reusable catalyst for three synthetically useful organic transformations; selective nitrile hydration, redox isomerization of allylic alcohols, and heteroannulation of (Z)‐enynols
Nucleic acid fragments encoding nitrile hydratase and amidase enzymes from comamonas testosteroni 5-MGAM-4D and recombinant organisms expressing those enzymes useful for the production of amides and acids
申请人:——
公开号:US20040225116A1
公开(公告)日:2004-11-11
The invention relates to the isolation, sequencing, and recombinant expression of genes encoding either a nitrile hydratase (NHase) or amidase (Am) from
Comamonas testosteroni
5-MGAM-4D, where the NHase is useful for catalyzing the hydration of certain nitriles to the corresponding amides, and the amidase is useful for hydrolysis of certain amides to the corresponding carboxylic acids. Also provided are transformed host cells containing polynucleotides for expressing the nitrile hydratase or amidase enzymes from
Comamonas testosteroni
5-MGAM-4D.
The present invention is a method of producing ε-caprolactam through adipamide as an intermediate, and characteristically includes a lactamization step of reacting adipamide, formed from a material compound, with hydrogen and ammonia in the presence of a catalyst containing: a metal oxide mainly containing an oxide(s) of one or more metallic elements selected from the group consisting of metallic elements of group 5 and groups 7 to 14 in the 4th to 6th periods of the periodic table; and a metal and/or a metal compound having a hydrogenation ability. The method can increase the selectivity of ε-caprolactam.