Propose a synthesis for the following transformations.Propose an efficient synthesis fo the following transformations. c Propose an efficient synthesis for the following transformations. OEt 5.
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- What product is formed when a solution of A and B is treated with mild base? This reaction is the rst step in the synthesis of rosuvastatin (sold as a calcium salt under the trade name Crestor), a drug used to treat patients with high cholesterol.The key step in a reported laboratory synthesis of sativene, a hydrocarbon isolated from the mold Helminthosporium sativum, involves the following base treatment of a keto tosylate. What kind of reaction is occurring? How would you complete the synthesis?When a carboxylic acid is dissolved in isotopically labeled water, the label rapidly becomes incorporated into both oxygen atoms of the carboxylic acid. Explain.