N-甲酰基化合物的NMR谱的研究

NMR STUDIES ON N-FORMYL COMPOUNDS

测定了一系列Ｎ甲酰基化合物的ＮＭＲ 波谱，对其一般特征进行了对比、讨论，尤其注意到由于ＣＮ 键的双键性而产生的异构体的性质以及氢键对于异构体的稳定作用．

N formyl compounds are useful fine chemicals and intermediates for medicines, pesticide, and herbicide. They are good solvents. We have obtained NMR spectra of a series of N formyl compounds, general features of which are compared and discussed. Especially noticed the appearance of isomers due to double bond character of C N bond and stabilization of hydrogen bond to the isomer. The spectra of the more complex N formyl compounds are discussed in terms of the conclusions drawn from the spectra of simple compounds. To study the isomerism of N formyl compounds, we have taken the temperature variation NMR technique. We have studied the ratio of isomers at different temperatures. It is our conclusion that the isomerism of N formyl compounds is caused by double bond characer of C N bond and hydrogen bond. \;