REGIOSELECTIVE SUBSTITUTIONS IN CYCLODEXTRINS

摘要

A process for producing monosubstituted alpha-, beta-, and gamma-cyclodextrins includes the step of condensing an excess of a cyclodextrin with an epoxide under alkaline conditions. A process for increasing the solubility of cyclodextrins includes the step of reacting a cyclodextrin with an amine under heterogenous catalytic conditions, or subjecting the cyclodextrin to sulfatation. Compositions useful in these processes include one containing at least one cyclodextrin, ammonia and Raney nickel, and a second composition containing at least one cyclodextrin, chlorosulfonic acid and pyridine.