EXAMPLE:Cyanoquinonamine acetate. USE:Antibacterial agent and antitumor agent having higher physiological activity than cyanoquinonamine. PREPARATION:The objective compound can be produced e.g. by acetylating cyanoquinonamine with acetic anhydride in an acidic solvent.TSUJI NAOKI...
The Polonovski reaction occurs when an amine oxide reacts with an acylating agent.39 The accepted mechanism involves proton removal to give a nitrogen ylide which loses acetate (using acetic anhydride) which attacks the carbon adjacent to the nitrogen atom giving an α-acetoxyamine. These intermedi...
ChemInform Abstract: REACTIONS OF ENEAMINES. XV. MECHANISM OF THE REACTION OF AMINE N-OXIDES WITH ACETIC ANHYDRIDE, THE POLONOVSKI REACTIONother reactionsDie Reaktion des N-Oxids (I) mit Essigsureanhydrid wird untersucht.doi:10.1002/chin.197632145...
1,3,4-Oxadiazolium hexafluorophosphate 112, prepared from the hexafluorophosphoric acid-mediated cyclocondensation of N′-acyl-N-aroyl-N-arylhydrazides or N′-acyl-N-acyl-N-arylhydrazides in acetic anhydride, react with cyanamide in 2-PrOH under basic conditions to give 1,5-disubstituted 3-amin...
adissolving chitosan in 2% aqueous acetic acid solution and therefore[translate] abetween that of natural rubber and chitosan. An enhancement in[translate] ablend. The increase in resistivity may be due to the enhancement in[translate] athe anhydride groups will react with the amine groups of chi...
aThe amine acylation was performed by adding 10 L amine to a mixture of 0.3mL anhydride (acetic or 4-pentenoic anhydride) and 0.1mL pyridine in a 15mL tube with a screw cap 胺物酰化产物通过增加10 进行L胺物到0.3mL酐乙酸或4-pentenoic (酐和0.1mL吡啶) 混合物在15mL管与螺帽[translate]...
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4,137,185 teaches reacting C1 to C30 mono carboxylic acid anhydrides, and dicarboxylic anhydrides, such as acetic anhydride, succinic anhydride, etc. with an ethylene copolymer reacted with maleic anhydride and a polyalkylene polyamine to inhibit cross linking and viscosity increase due to further ...
Acylation of compounds of formula (Ia) is preferably carried out in an aprotic solvent such as dichloromethane in the presence of an organic base such as DIPEA with an acyl chloride of formula (X) or, alternatively, in neat acetic anhydride. Method C Another process is described for the ...
One-pot synthesis of N-1,3-dihydroxyprop-2-ylalkylacetamide was realized by the reaction of 5-amino-2, 2-dimethyl-1,3-dioxane with acetic anhydride in high regioselectivity and yield with easiness for operation under mild condition. 以5-氨基烷基-2,2-二甲基-1,3-二噁烷为起始原料,乙酸酐...