Chapter 23: Q46. (page 924)
Question: Synthesize each compound from diethyl malonate. You may use any other organic or inorganic reagents.


Short Answer
Answer
The starting materials needed to prepare each compound are shown below.
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Chapter 23: Q46. (page 924)
Question: Synthesize each compound from diethyl malonate. You may use any other organic or inorganic reagents.


Answer
The starting materials needed to prepare each compound are shown below.
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Question: Identify A, B, and C, intermediates in the synthesis of the five-membered ring called an -methylene- -butyrolactone. This heterocyclic ring system is present in some antitumor agents.

Question: Nabumetone is a pain reliever and anti-inflammatory agent sold under the brand name of Relafen.

a. Write out a synthesis of nabumetone from ethyl acetoacetate.
b. What ketone and alkyl halide are needed to synthesize nabumetone by direct enolate alkylation?
Question: Synthesize (Z)-hept-5-en-2-one from ethyl acetoacetate (CH3COCH2CO2Et ) and the given starting material. You may also use any other organic compounds or required inorganic reagents.

Question: What alkyl halides are needed to prepare each carboxylic acid using the malonic ester synthesis?



Question:Explain each observation: (a) When (R)-2-methylcyclohexanone is treated with NaOH in H2O , the optically active solution gradually loses optical activity. (b) When (R)-3-methylcyclohexanone is treated with NaOH in H20 , the solution remains optically active.
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