{"knowledge_schema": {"broad_category": "Chemistry \u2192 Organic Chemistry \u2192 Reaction Mechanisms", "refinement": "This problem involves the Diels-Alder reaction, a cycloaddition reaction between a diene and a dienophile, followed by oxidative cleavage and reduction.", "specific_scope": "The focus is on the reaction of 1,3-butadiene with ethylene, leading to a specific product that undergoes further transformations through ozonolysis and reduction.", "goal": "Identify the major product resulting from the sequence of reactions involving 1,3-butadiene and ethylene."}, "summary": "This problem pertains to organic chemistry, specifically the Diels-Alder reaction, where 1,3-butadiene reacts with ethylene to form a cyclohexene derivative. Following this, the product undergoes ozonolysis and reduction, leading to the formation of a diol. The goal is to determine the major product of these reactions, which is identified as Cyclohexene-1,2-diol."}