The rates of reaction of potassium iodide in acetone solution with several series of compounds of the type YiCH?),, CI rn= 1 to* 5) have been measured. The strong deactivating effects of F, C and C6H, SOn groups when attached to the a-carbon atom are attributed to steric and field effects, their inductive effects being as-sumed to be tnildly rate enhancing. Seither these groups nor related groups, such as CaH, S, C6HjC0, or CS, ...
