{"knowledge_schema": {"broad_category": "Chemistry \u2192 Organic Chemistry \u2192 Named Reactions", "refinement": "This problem focuses on identifying reactants in specific named reactions that are significant in organic synthesis.", "specific_scope": "The task involves determining the reactants for two named reactions that lead to specific organic products.", "goal": "Identify the reactants A and B that lead to the respective products in the given named reactions."}, "summary": "In this chemistry problem, we are tasked with identifying the reactants involved in two named reactions that yield specific organic products. The first reaction involves 2,7-dimethyloctahydronaphthalene-4a,8a-diol reacting with sulfuric acid to produce 2,8-dimethylspiro[4.5]decan-6-one. The second reaction involves (((3-methylbut-2-en-1-yl)oxy)methyl)benzene reacting with butyllithium and a proton source to yield 4-methyl-1-phenylpent-3-en-1-ol. Understanding the mechanisms of these reactions is crucial for grasping how the reactants transform into the products."}