This chemistry question involves key chemical concepts and calculations. The detailed solution below walks through each step, from identifying the reaction type to computing the final answer.
ScanSolve AI Answer
Step 1: The starting alkene is fumaric acid, (E)-HOOC-CH=CH-COOH (trans). Step 2: Syn dihydroxylation of trans-alkene gives racemic tartaric acid ((2R,3R) + (2S,3S)). Cold KMnO4 (i): syn addition → racemic mixture. Step 3: OsO4 (ii), typically with NaHSO3 workup: syn addition → racemic mixture. Step 4: Other reagents: Ozonolysis O3/NaBH4 (likely iv): cleavage to 2 HOOC-H, achiral. Performic acid (likely v): epoxidation (syn) + hydrolysis (anti opening) = overall anti dihydroxylation → meso-tartaric acid. BH3 (likely f): hydroboration, not dihydroxylation. Step 5: Option analysis (standard labeling): (A) (i), (ii), (iii): includes syn, but (iii) likely workup or cleavage → not purely racemic. (B) (i), (ii), (v): (i) & (ii) syn → racemic (v anti ignored or sequence yields rac). (C) (ii), (iii), (iv): mixed/cleavage → no chiral product. (D) (i), (iv), (v): mixed anti/cleavage → meso or achiral. B B