Aromatic and aliphatic dithioesters, many of them new, have been easily synthesized in excellent yields by the ester interchange reaction between carboxymethyl dithioesters and mercaptans. PMR spectra of these dithioesters and the corresponding oxygen analogues show that a strong anisotropic deshielding effect is associated with the highly polarized thiocarbonyl group.
通过羧甲基二
硫代酯与
硫醇的酯交换反应,可以容易地以优异的产率合成芳族和脂肪族二
硫代酯,其中许多是新的。这些二
硫代酸酯和相应的氧类似物的PMR光谱表明,强极化的各向异性屏蔽作用与高度极化的
硫代羰基有关。