A highly improved and green methodology for the direct amidation of carboxylic acids with amines using silica gel as a solidsupport and catalyst is described. The scope of this...
描述了使用硅胶作为固体载体和催化剂将羧酸与胺直接酰胺化的高度改进的绿色方法。这个范围...
Facile preparation of amides from carboxylic acids and amines with ion-supported Ph3P
作者:Yuhsuke Kawagoe、Katsuhiko Moriyama、Hideo Togo
DOI:10.1016/j.tet.2013.03.021
日期:2013.5
rimethylammonium bromide (IS-Ph3P), could be used for the facile amidation of a wide range of carboxylicacids with amines in the presence of bromotrichloromethane to provide the corresponding amides in good yields. In the present reaction, the desired amides were obtained in good yields with high purity by simple extraction of the reaction mixture with diethyl ether or chloroform and subsequent removal
structure. The resulting structures were confirmed using NMR and MS. Cytotoxicity and the anti-inflammatory activity of these synthetic macamides were evaluated in the THP-1 cell line. Preliminary biological evaluation indicated that most of these synthetic macamides did not present cytotoxicity (MTT assay) in the tested cell line with respect to the control (actinomycin D). Regarding the anti-inflammatory
Ce(III) immobilised on aminated epichlorohydrin-activated agarose matrix – “green” and efficient catalyst for transamidation of carboxamides
作者:Zeinab Zarei、Batool Akhlaghinia
DOI:10.1515/chempap-2015-0168
日期:2015.1.1
“green” catalyst. The catalyst was synthesised by the reaction of the epichlorohydrin-activated agarose matrix with ammonia solution, which was then treated with Ce(NO3)3 · 6H2O. The catalyst (CAEA) was characterised by FT-IR, far IR, CHN, XRD, TGA, and ICP techniques. CAEA is shown to be an effective and reusable heterogeneous catalyst for the transamidation of carboxamides with amines under solvent-free