Condensation-ring Expansion Reaction of Formyl[2.2.1]bicyclic Carbinols with Para-substituted Phenyl Amines: Application to the Preparation of [3.2.1]bicyclic N-aryl-1,2,3-oxathiazolidine-2-oxide Agents
Individual reaction of camphene‐derived endo‐formyl[2.2.1]bicyclic carbinol and that of camphor‐derived exo‐formyl[2.2.1]bicyclic carbinol with parent and para‐substituted phenyl amines gave regio‐ and stereospecific corresponding [3.2.1]bicyclic (para‐substituted) phenyl amino ketones. Mechanism of each reaction was discussed. Some camphor‐derived [3.2.1]bicyclic amino ketones were reduced to [3.2.1]bicyclic