作者:John D. Roberts、Charlotte Green
DOI:10.1021/ja01206a020
日期:1946.2
the identification and characterization of carbonyl compounds, coupled with the fact that a number of exceptions are known to the above-mentioned color rule, we have undertaken a study of the absorption spectra of a number of dinitrophenylhydrazones in neutral and alkaline solutions to see if more reliable criteria for the structure and degree of unsaturation of the original compounds could be obtained
Redemann 指出,α,β-不饱和羰基化合物的结晶 2,4-二硝基苯腙通常呈鲜红色,与相应饱和衍生物的黄色形成对比。鉴于使用 2,4-二硝基苯腙作为衍生物来鉴定和表征羰基化合物的广泛兴趣,加上上述颜色规则已知的一些例外情况,我们进行了一项研究对许多二硝基苯腙在中性和碱性溶液中的吸收光谱进行分析,以确定是否可以获得更可靠的原始化合物结构和不饱和度标准。