{"knowledge_schema": {"broad_category": "Chemistry \u2192 Organic Chemistry \u2192 Spectroscopy and Reaction Mechanisms", "refinement": "This problem involves interpreting spectroscopic data (IR and NMR) to identify a compound and predict its reaction product with red phosphorus and HI.", "specific_scope": "The focus is on analyzing the provided IR and NMR data to deduce the structure of Compound X and determine the final product after its reaction with red phosphorus and HI.", "goal": "Identify the structure of Compound X and predict the final product of its reaction."}, "summary": "In this problem, we analyze the IR and NMR data of Compound X to deduce its structure. The IR spectrum indicates the presence of a carboxylic acid (due to the peak around 1720 cm-1) and an aromatic ring (peaks around 1610 cm-1 and 1450 cm-1). The NMR data suggests the presence of aromatic protons and aliphatic protons, indicating a complex structure. Upon reacting with red phosphorus and HI, which typically leads to the reduction of carboxylic acids to alkanes, we conclude that the final product is 1-(sec-butyl)-4-methylbenzene."}