We started to investigate the reaction by using cyclohexylvinylthiathrenium salt 1a with benzoic acid 2a. Interestingly, translocation of alkene by allylic C-H functionalization was observed, affording 1,1,2-trialkyl substituted alkene 3a instead of ipso-vinyl substitution of vinylthiathrenium. After evaluation of a variety of reaction parameters, we defined the use of potassium carbonate (1.0 equiv) as base in DCM (0.1 M) at room temperature as standard conditions, delivering the desired prouct 3a in 91% isolated yield (Table , entry 1). The use of other bases could also mediate the reaction. Cesium carbonate and potassium phosphate tribasic delivered 3a in 85% and 72% yields, respectively (Table , entries 2 and 3). Lithium carbonate led to no formation of 3a (Table , entry 4). The reaction proceeded in most tested solvents, including polar and nonpolar solvents, furnishing the desired product 3a in 47-88% yields (Table , entries 5-9). Table . Condition development of the reaction.