{"knowledge_schema": {"broad_category": "Chemistry \u2192 Organic Reactions \u2192 Product Identification", "refinement": "This problem involves predicting the major products of organic reactions based on the structure of reactants and the conditions of the reaction.", "specific_scope": "The focus is on two specific reactions: one involving a cyclohexanone and an acrylate, and the other involving a nitro compound and an enenitrile in an aqueous environment.", "goal": "Identify the major products of the given reactions while considering factors such as steric hindrance and product stability."}, "summary": "In this problem, we are tasked with identifying the major products of two organic reactions. The first reaction involves 2-ethyl-2,6-dimethylcyclohexan-1-one and ethyl acrylate in the presence of t-BuOK, leading to the product ethyl 3-(3-ethyl-1,3-dimethyl-2-oxocyclohexyl)propanoate. The second reaction involves 1-nitropropane reacting with KOH and (E)-but-2-enenitrile in water, resulting in the product 3-methyl-4-nitrohexanenitrile. The answer indicates that both products A and B are correctly identified based on the reaction conditions and structural considerations."}