Amidines. I. Hydrolysis of N1-acyl-and N1-Tosyl-N1, N2-diarylamidines.
作者:Machiko ONO、Shinzo TAMURA
DOI:10.1248/cpb.38.590
日期:——
In acid hydrolysis of N1-acyl-N1, N2-diarylamidines, a water molecule attacked exclusively the amidine central carbon, and the reaction proceeded in parallel through two patheways. One of them leads to the formation of two N-acylarylamines, and the other leads to the formation of N, N-diacylarylamine and srylamine. Acid hydrolysis of N1-tosyl-N1, N2-diarylamidine was also examined. The results were similar to those of the hydrolysis of N1-acyl-N1, N2-diarylamidines.Alkaline hyrdolysis and alcoholysis of N1-acyl-N1, N2-diarylamidines occurred almost exclusively at the amide carbonyl group to give N1, N2-diarylamidines and carboxylic acids or their esters.The effects of structural change and the aryl substituents on the rate and direction of the reaction were examined.
在N1-酰基-N1, N2-二芳基氨基的酸水解中,一个水分子专门攻击了氨基中心碳,并且反应通过两条路径并行进行。其中一条路径导致生成两个N-酰基芳香胺,另一条路径则形成N,N-二酰基芳香胺和醇胺。对N1-托烯基-N1, N2-二芳基氨基的酸水解也进行了研究,结果与N1-酰基-N1, N2-二芳基氨基的水解类似。N1-酰基-N1, N2-二芳基氨基的碱性水解和醇解几乎完全发生在酰胺羰基上,生成N1, N2-二芳基氨基和羧酸或其酯。还对结构变化和芳基取代基对反应速率和方向的影响进行了研究。