The gas-phase reactions of the anions of catechol, 4-methylcatechol, resorcinol, and o-cresol with BS and SiF4 have been examined using the flowing afterglow technique. These systems initially form an addition product in a three-body step, and this addition product subsequently participates in fluoride transfer with a second molecule of the reactant neutral. The reactions involving the anions of catechol and 3-methylcatechol exhibit a second primary product channel which is independent of the concentration of the third-body. Results suggest that this bimolecular product is a cyclic species formed in a step involving the ring-closure step and loss of HF. Relative amounts of the two primary products are sensitive to pressure as well as to the identity of the Lewis acid. We explain this behavior in terms of a multiple-well potential energy surface which contains a barrier in the bimolecular product channel.