Nucleophilic Displacement at Sulfur Center (). Kinetic Studies on Halide Exchange Reactions of Dimethylsulfamoyl Chloride in Dry Acetone

Journal of the Korean Chemical Society

Ikchoon Lee¹  Shi Choon Kim¹ 

DOI  :  

学科分类：化学（综合）

来源: Korean Chemical Society

【 摘 要 】

Kinetic study of halide exchange for dimethylsulfamoyl chloride in dry acetone by using radioisotopic halide ions has been carried out at two temperatures. The result of the order of nucleophilicity, as compared with benzenesulfonyl chloride, shows a similar tendency but reaction rate is slower, more than 10-2 times, than benzenesulfonyl chloride. The activation parameter, ¥ÄH¡Á and ¥ÄS¡Á decrease in sequence Cl- > Br- > I- in dimethylsulfamoyl chloride but it is the reverse order found for benzenesulfonyl chloride. The results are interpreted with bond-breaking, bond-formation, and electronic requirments, and in the light of HSAB Principle.

【 授权许可】

Unknown