The gas-phase basicity and H/D exchange characteristics of the parent thiocarbonyl enolate anions
作者:Lijian Zhang、Joseph J. Grabowski
DOI:10.1039/c39890001819
日期:——
The enethiolate anions corresponding to thioacetaldehye and thioacetone, synthesized via elimination reactions, undergo H/D exchange reactions, demonstrating the intermediacy of the thiocarbonyl tautomers, and proton transfer reactions, leading to ΔGacid0[CH3CHS]= 341 ± 3 kcal mol–1 and ΔGacid0[(CH3)2CS]= 344 ± 3 kcal mol–1(1 kcal = 4.184 KJ).
通过消除反应合成的对应于硫代乙二醛和硫代丙酮的烯硫醇根阴离子经历H / D交换反应,证明了硫代羰基互变异构体和质子转移反应的中间性,从而导致ΔG酸0 [CH 3 CH S] = 341±3 kcal mol –1和ΔG酸0 [(CH 3)2 C S] = 344±3 kcal mol –1(1 kcal = 4.184 KJ)。