在筛选的20种非均相和均相催化剂中,Nb 2 O 5通过琥珀酸酐和苯胺的脱水缩合合成N-苯基琥珀酰亚胺的活性最高。Nb 2 O 5用于直接将各种羧酸酐与NH 3或具有各种官能团的胺直接酰亚胺化,可以重复使用。动力学研究表明,路易斯酸Nb 2 O 5催化剂比路易斯酸性氧化物TiO 2和均相路易斯酸ZrCl 4具有更高的耐水性,这通过使用Nb可以提高酰亚胺的收率。2 O 5。
[EN] PROCESS OF FORMING A CYCLIC IMIDE<br/>[FR] PROCÉDÉ DE FORMATION D'UN IMIDE CYCLIQUE
申请人:UNIV NANYANG TECH
公开号:WO2012002913A1
公开(公告)日:2012-01-05
A process is provided for the synthesis of a cyclic imide. A primary amine and a diol compound are contacted in the presence of a Ruthenium (II) complex. The Ruthenium (II) catalyst includes at least one of an alicyclic ligand, an aromatic ligand, an arylalicyclic ligand, an arylaliphatic ligand and a phosphine ligand.
base-metal-catalyzed dehydrogenative coupling of diols and amines to form cyclic imides is reported. The reaction is catalyzed by a pincercomplex of the earth abundant manganese and forms hydrogen gas as the sole byproduct, making the overall process atom economical and environmentallybenign.
作者:Jian Zhang、Muthaiah Senthilkumar、Subhash Chandra Ghosh、Soon Hyeok Hong
DOI:10.1002/anie.201002136
日期:2010.8.23
There′s something imide so strong: Cyclicimides were synthesized fromsimplediols with primary amines in a single step using an in‐situ‐generated ruthenium catalytic system. The atom‐economical and operatively simple syntheses of succinimides, phthalimides, and glutarimides, which are important building blocks in natural products and drugs, was also demonstrated.
Versatile and Sustainable Synthesis of Cyclic Imides from Dicarboxylic Acids and Amines by Nb<sub>2</sub>O<sub>5</sub>as a Base-Tolerant Heterogeneous Lewis Acid Catalyst
作者:Md. Ayub Ali、S. M. A. Hakim Siddiki、Kenichi Kon、Junya Hasegawa、Ken-ichi Shimizu
DOI:10.1002/chem.201404538
日期:2014.10.27
Catalytic condensation of dicarboxylicsacid and amines without excess amount of activating reagents is the most atom‐efficient but unprecedented synthetic method of cyclicimides. Here we present the first general catalytic method, proceeding selectively and efficiently in the presence of a commercial Nb2O5 as a reusable and base‐tolerant heterogeneousLewisacidcatalyst. The method is effective for
二羧酸和胺的催化缩合反应没有过量的活化剂是最高效,最空前的环状酰亚胺合成方法。在这里,我们介绍了第一种通用催化方法,该方法在作为可重用和耐碱多相路易斯酸催化剂的商业Nb 2 O 5的存在下选择性而有效地进行。该方法可有效地从二羧酸或酸酐与胺,羟胺或氨直接合成药学上或工业上重要的环状酰亚胺,例如苯甲酰亚胺,N-羟基邻苯二甲酰亚胺(NHPI)和未取代的环状酰亚胺。
Direct Synthesis of Cyclic Imides from Carboxylic Anhydrides and Amines by Nb<sub>2</sub>
O<sub>5</sub>
as a Water-Tolerant Lewis Acid Catalyst
作者:Md. A. Ali、Sondomoyee K. Moromi、Abeda S. Touchy、Ken-ichi Shimizu
DOI:10.1002/cctc.201501172
日期:2016.3.7
highest activity for the synthesis of N‐phenylsuccinimide by dehydrative condensation of succinicanhydride and aniline. Nb2O5 was used in the direct imidation of a wide range of carboxylic anhydrides with NH3 or amines with various functional groups and could be reused. Kinetic studies showed that the Lewis acid Nb2O5 catalyst was more water tolerant than both the Lewis acidic oxide TiO2 and the homogeneous
在筛选的20种非均相和均相催化剂中,Nb 2 O 5通过琥珀酸酐和苯胺的脱水缩合合成N-苯基琥珀酰亚胺的活性最高。Nb 2 O 5用于直接将各种羧酸酐与NH 3或具有各种官能团的胺直接酰亚胺化,可以重复使用。动力学研究表明,路易斯酸Nb 2 O 5催化剂比路易斯酸性氧化物TiO 2和均相路易斯酸ZrCl 4具有更高的耐水性,这通过使用Nb可以提高酰亚胺的收率。2 O 5。