{"knowledge_schema": {"broad_category": "Chemistry \u2192 Organic Chemistry \u2192 Reaction Mechanisms", "refinement": "This problem involves the rearrangement of vicinal diols under acidic conditions, leading to the formation of ketones through dehydration and rearrangement processes.", "specific_scope": "The focus is on identifying the products formed from specific vicinal diols when treated with acid, considering the structural changes that occur during the reaction.", "goal": "Determine the correct products of the rearrangement for each given vicinal diol when treated with acid."}, "summary": "This problem examines the rearrangement of vicinal diols when treated with acid, leading to the formation of ketones. The task is to identify the correct products for three specific compounds: 2,3-Dimethyl-2,3-butanediol, 1,2-Diphenyl-1,2-ethanediol, and 1,1,2-Trimethyl-2-phenyl-1,2-ethanediol. The correct products are 3,3-dimethyl-2-butanone for A, 2,2-diphenylethan-1-one for B, and 2,2,2-trimethyl-1-phenylethan-1-one for C, reflecting the structural changes that occur during the reaction."}