Geminal and vicinal<sup>13</sup>C–<sup>13</sup>C coupling constants in carboxylic acid derivatives
作者:Penny A. Chaloner
DOI:10.1039/p29800001028
日期:——
Geminal 13C–13C coupling constants in αβ-unsaturated azlactones and the acids and esters derived from their hydrolysis are large and strongly dependent on configuration. Coupling constants in simple 13C1-labelled carboxylic acids are also reported; vicinal couplings show a strong geometric dependence but the geminal couplings depend mainly on hybridisation.
αβ-不饱和氮杂内酯中的Geminal 13 C– 13 C耦合常数以及它们水解产生的酸和酯很大,并且强烈依赖于构型。还报道了在简单的13 C 1标记的羧酸中的偶联常数。相邻的偶合显示出很强的几何依赖性,但是双性偶合主要依赖于杂交。