芳基氯化硫是一类具有多种反应性能的物质。Kharasch等系统地研究了它们对重键的加成,并提出亲电反应机理。但在炔烃反应中,只用亲电反应机理不能解释其加成方向。例如,Truce研究苯基氯化硫与苯乙炔在非极性溶剂中的加成,得α-苯硫基-β-氯代苯乙烯。Modena等研究对硝基苯基氯化硫与苯乙炔的加成,用弱极性溶剂,则对硝 Aryl chloride is a class of substances with a variety of reactivity. Kharasch et al. Systematically studied their addition of multiple bonds and proposed electrophilic reaction mechanism. However, in the alkyne reaction, only the electrophilic reaction mechanism can not explain the addition direction. For example, Truce studies the addition of phenylsulfuric acid to phenylacetylene in a non-polar solvent to give α-phenylsulfanyl-β-chlorostyrene. Modena et al. Studied the addition of p-nitrophenylsulphide and phenylacetylene, with weak polar solvents,