amide formationesterification, transesterificationThe reaction of trichloroisocyanuric acid (TCICA) and triphenylphosphine in the presence of a carboxylic acid results in the in situ formation of the corresponding acid chloride under mild conditions. Subsequent addition of amines or alcohols, in the ...
This review summarizes the recent progress of RE(OTf)(3) catalyzed organic synthesis in green media including water, ionic liquids, super critical CO2, solvent-free conditions as well as solid supported synthesis.关键词: amide formation carboxylic amides (acyclic compounds carboxylic amides (benzene ...
carboxylic acid esters (benzene compoundsoxadiazole derivativesTreatment of 螖 2-1,2,4-oxadiazolines (4,5-dihydro-1,2,4-oxadiazoles), readily formed by cycloaddition of nitrite oxides to imines, with potassium TERT-butoxide leads to cycloreversion of the resulting anions to give a nitrite and ...
P2O5 is a well-known dehydrating agent used to convert benzamides into benzonitriles25,26; however, the mechanism for the trimerization of benzamides into a triazine ring has not yet been resolved. There are two possible pathways: one is the direct trimerization of three amide groups into a tr...
aminocarboxylic acid amide derivatives, and to methods of using same in the field of general health care, for example, to improve resistance to stress, improve production of desired characteristics or useful products in animals, to increase weight gain, prevent diseases caused by pathogens, and to...
compounds, eg aminocarboxylic acid amide derivatives, and to methods of using same in the field of general health care, for example, to improve resistance to stress, improve production of desired characteristics or useful products in animals, to increase weight gain, and to decrease feed ...
For seeking high enantiopurity, the previously reported thermal asymmetric catalysis is usually carried out at low temperature sometimes with limited yield, that is, the high enantiomeric excess (ee) usually at the cost of high yield. Thus, the achieving
ChemInform Abstract: A New Mild Method for the Cleavage of the Amide Bond: Conversion of Secondary and Tertiary Amides to Esters.amide formation, amide hydrolysisesterification, ester hydrolysiscarboxylic acid esters (acyclic compounds)carboxylic acid esters (benzene compounds)...
of these reactions31,32,33. A simplified representation of metal–ligand cooperativity is shown inFig. 1c. The cooperative site in the ligand can be adjacent to the metal centre as the amide function in complexA34or slightly remote as suggested for complexB. Previous calculations imply that ...
19. A process according to claim 18, wherein the nucleophilic reagent is sodium methoxide. 20. A process according to claim 1, wherein the hydrogen gas is circulated through the amide. 21. A process for preparing an amine of the formula: ##STR14## wherein R1, R2and R3are independently...