Direct Synthesis of Lactams from Keto Acids, Nitriles, and H<sub>2</sub>
by Heterogeneous Pt Catalysts
作者:S. M. A. H. Siddiki、Abeda S. Touchy、Ashvini Bhosale、Takashi Toyao、Yuji Mahara、Junya Ohyama、Atsushi Satsuma、Ken-ichi Shimizu
DOI:10.1002/cctc.201701355
日期:2018.2.21
We report herein the first general catalytic system for the direct synthesis of N‐substituted γ‐ and δ‐lactams by reductive amination/cyclization of keto acids (including levulinic acid) with nitriles and H2 under mild conditions (7 bar H2, 110 °C, solvent free). The most effective catalyst, Pt and MoOx co‐loaded TiO2 (Pt‐MoOx/TiO2), shows a wide substrate scope, high turnover number (TON), and good
我们在此报告的第一一般催化系统用于直接合成的N-取代的γ-和δ-内酰胺通过酮酸(包括乙酰丙酸)与腈和H还原胺化/环化2在温和条件下(7巴ħ 2,110 °C,无溶剂)。最有效的催化剂是Pt和MoO x共负载的TiO 2(Pt-MoO x / TiO 2),具有广泛的底物范围,高周转率(TON)和良好的可重复使用性。
HYDROFLUOROCARBON REFRIGERANT COMPOSITIONS AND USES THEREOF
申请人:MINOR HAVILAND BARBARA
公开号:US20070289317A1
公开(公告)日:2007-12-20
Disclosed herein are hydrofluorocarbon refrigerant or heat transfer fluid compositions that are useful in refrigerain or air conditioning apparatus or as heat transfer fluids. The compositions of the present invention are also useful in centrifugal compressor apparatus that employ two-stage compressors or single slab.single pass heat exchangers.
[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.
The present invention relates to compositions that are useful for compatibilizing a conventional compression refrigeration lubricant and a hydrofluorocarbon and/or hydrochlorofluorocarbon refrigerant in a compression refrigeration or air conditioning system. Additionally, these compositions promote efficient return of lubricant from the non-compressor zones to the compressor zones of refrigeration and air conditioning systems.