{"knowledge_schema": {"broad_category": "Chemistry \u2192 Organic Chemistry \u2192 Pericyclic Reactions", "refinement": "This problem specifically deals with sigmatropic rearrangements, which are a subset of pericyclic reactions involving the rearrangement of pi bonds and sigma bonds under certain conditions.", "specific_scope": "The transformations involve specific reactants and conditions leading to the formation of products through sigmatropic rearrangements, including the Cope and Claisen rearrangements.", "goal": "Identify the correct products (A, B, and C) resulting from the given transformations based on the principles of organic chemistry and pericyclic reactions."}, "summary": "This problem focuses on sigmatropic rearrangements, a type of pericyclic reaction where terminal pi bonds shift into sigma bonds. The task involves completing transformations of specific organic compounds under given conditions. The goal is to determine the correct products of these transformations, which requires an understanding of the mechanisms and stereochemistry involved in these reactions. The correct answer identifies the products A, B, and C as (Z)-1-(but-2-en-2-yloxy)ethen-1-amine, (3Z,4E)-3,4-diethylidenecyclobut-1-ene, and 4-methylenehexanal, respectively."}