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- Acetals 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.Drawing an Enol and a Ketone Formed by Hydration of an Alkyne Draw the enol intermediate and the ketone product formed in the following reaction.Choose the best reagents to complete the following reactions.
- Answer the following questions about curcumin, a yellow pigment isolated from turmeric, a tropical perennial in the ginger family and a principal ingredient in curry powder.a.In Chapter 11, we learned that most enols, compounds that contain a hydroxy group bonded to a C=C, are unstable and tautomerize to carbonyl groups. Draw the keto form of the enol of curcumin, and explain why the enol is more stable than many other enols. b.Explain why the enol O—H proton is more acidic than an alcohol O—H proton. c. Why is curcumin colored? d.Explain why curcumin is an antioxidant.Draw the product formed when phenylacetic acid (C6H5CH2COOH) istreated with following reagent. With some reagents, no reaction occurs. NaOHDraw the products formed when attached compound is treated with HNO3 and H2SO4. State whether the reaction occurs faster or slower than a similar reaction with benzene.
- Draw the products formed when each compound is treated with HNO3 and H2SO4.State whether the reaction occurs faster or slower than a similar reaction with benzene.Draw the product formed when phenylacetic acid (C6H5CH2COOH) istreated with following reagent. With some reagents, no reaction occurs. CH3OH, H2SO4Draw the product formed when each compound is treated with NaNO2 and HCl.