A Facile Direct Route to
<i>N</i>
‐(Un)substituted Lactams by Cycloamination of Oxocarboxylic Acids without External Hydrogen
作者:Hu Li、Hongguo Wu、Heng Zhang、Yaqiong Su、Song Yang、Emiel J. M. Hensen
DOI:10.1002/cssc.201901780
日期:2019.8.22
Lactams are privileged in bioactive natural products and pharmaceutical agents and widely featured in functional materials. This study presents a novel versatile approach to the direct synthesis of lactams from oxocarboxylic acids without catalyst or external hydrogen. The method involves the in situ release of formic acid from formamides induced by water to facilitate efficient cycloamination. Water
[EN] PROCESS FOR PREPARING AN N-ALKYLLACTAM WITH IMPROVED COLOR QUALITY<br/>[FR] PROCÉDÉ DE PRÉPARATION D'UN N-ALKYLLACTAME À QUALITÉ DE COULEUR AMÉLIORÉE
申请人:BASF SE
公开号:WO2010057917A1
公开(公告)日:2010-05-27
The present invention relates to a process for purifying an N-alkyllactam which comprises contacting N-alkyllactams with carbon. The present invention also relates to mixtures comprising poly(vinylidene fluodride) (PVDF) and N-alkyllactams, in which the N- alkyllactams have been purified by contacting the N-alkyllactam as well as a method for their production. The present invention also relates to the use of said mixtures in processing PVDF for applications in which improved color is a quality requirement.
Ruthenium-Catalyzed Conversion of Levulinic Acid to Pyrrolidines by Reductive Amination
作者:Yao-Bing Huang、Jian-Jun Dai、Xiao-Jian Deng、Yan-Chao Qu、Qing-Xiang Guo、Yao Fu
DOI:10.1002/cssc.201100344
日期:2011.11.18
Combo deal: An aqueous solution of levulinicacid (LA) and formic acid (FA) derived from biomass‐based carbohydrates can be converted efficiently to pyrrolidines via a ruthenium catalyst without need for an energy‐intensive separation of LA or an external H2 source. The ruthenium catalyst combines two processes: decomposition of FA to H2 and reductiveamination of LA with an amine.
[EN] PRODUCTION OF 5-METHYL-N-ARYL-2-PYRROLIDONE AND 5-METHYL-N-ALKYL-2-PYRROLIDONE BY REDUCTIVE AMINATION OF LEVULINIC ACID WITH NITRO COMPOUNDS<br/>[FR] PRODUCTION DE 5-METHYL-N-ARYL-2-PYRROLIDONE ET DE 5-METHYL-N-ALKYL-2-PYRROLIDONE PAR AMINATION REDUCTRICE D'ACIDE LEVULINIQUE AVEC DES COMPOSES NITRO
申请人:DU PONT
公开号:WO2004084633A1
公开(公告)日:2004-10-07
This invention relates to a process for producing 5-methyl-N-aryl-2-pyrrolidone, 5-methyl-N-cycloalkyl-2-pyrrolidone, and 5-methyl-N-alkyl-2-pyrrolidone by reductive amination of levulinic acid with nitro compounds utilizing a metal catalyst, which is optionally supported.
[EN] PRODUCTION OF 5-METHYL-N-(METHYL ARYL)-2-PYRROLIDONE, 5-METHYL-N-(METHYL CYCLOALKYL)-2-PYRROLIDONE AND 5-METHYL-N-ALKYL-2-PYRROLIDONE<br/>[FR] PRODUCTION DE 5-METHYL-N-(METHYLARYL)-2-PYRROLIDONE, DE 5-METHYL-N-(METHYLCYCLOALKYL)-2-PYRROLIDONE ET DE 5-METHYL-N-ALKYL-2-PYRROLIDONE
申请人:DU PONT
公开号:WO2004084888A1
公开(公告)日:2004-10-07
This invention relates to a process for producing 5-methyl-N-(methyl aryl)-2-pyrrolidone, 5-methyl-N-(methyl cycloalkyl)-2-pyrrolidone and 5-methyl-N-alkyl-2-pyrrolidone by reductive amination of levulinic acid with aryl cyano compounds utilizing a metal catalyst, which is optionally supported.