Concept explainers
Devise a synthesis of valproic acid
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Organic Chemistry
- 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?arrow_forwardThe following pKa values have been measured. Explain why a hydroxyl group in the para position decreases the acidity while a hydroxyl group in the meta position increases the acidity.arrow_forwardHh.118.arrow_forward
- When trichloroacetaldehyde is dissolved in water, almost all of it is converted to the hydrate. Chloral hydrate, the product of the reaction, is a sedative that can be lethal. A cocktail laced with it is known—in detective novels,at least—as a “Mickey Finn.” Explain why an aqueous solution of trichloroacetaldehyde is almost all hydrate.arrow_forwardWhen trichloroacetaldehyde is dissolved in water, almost all of it is converted to the hydrate. Chloral hydrate, the product of the reaction, is a sedative that can be lethal. A cocktail laced with it is known—in detective novels, at least—as a “Mickey Finn.” Explain why an aqueous solution of trichloroacetaldehyde is almost all hydrate.arrow_forwardAcetals are formed from the reaction of two alcohols with a carbonyl under acidic conditions. Acetal formation is faster with 1,2-ethanediol than with two methanol molecules. Choose the factor that explains the difference in reaction rates. A) The reaction with 1,2-ethanediol has a lower AH (enthalpy) of reaction. B) The reaction with 1,2-ethanediol has a higher AH (enthalpy) of reaction. C) The reaction with 1,2-ethanediol has a more favorable entropy of reaction.arrow_forward
- Draw a stepwise mechanism for the following reaction.arrow_forwardDevise a synthesis of CH,CH,C=CCH,CH,OH using CH,CH,CH-CH, as the starting material. You may use any other organiC compounds or inorganic reagents. Be sure to anSwer all parts. HO Step 1: HCL 2 equiv NOCI Intermediatel: draw structure Step 2: Intermediate 2: draw atructure Step 3: CH,CH;CH; Br NHy Intermediate 3: draw atructure .. Step 4: CHCH,CHarrow_forwardWhat product is formed when a solution of A to B is treated with mild base? This reaction is the first 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.arrow_forward