Concept explainers
(a)
Interpretation:
Whether
Concept introduction:
The Gabriel synthesis involves the reaction between an
(b)
Interpretation:
The synthesis of the compound
Concept introduction:
The Curtius rearrangement is a reaction of acyl azide which on rearrangement yields isocyanate with loss of nitrogen gas. The isocyanate formed after the Curtius reaction can be hydrolyzed to give primary amines.
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Organic Chemistry
- 2) Propose the route for the following synthesis.arrow_forwardWhen a methyl ester is hydrolyzed under acidic conditions in H,180, the 180 isotope ends up in the carboxylic acid. When a tert-butyl ester is hydrolyzed under the same conditions, the labeled oxygen ends up in the alcohol product. (a) Propose mechanisms to account for these observations. (b) Explain why each ester undergoes the respective mechanism. CH3 + Но-СНЗ 18 + H180 H ОНarrow_forward(a) (b) (c) (d) (e) + Lysine H₂O + Hopi HO3P- HO OH i O: N OH A + HSCH 3 OH acetal formation imine formation enamine hydrolysis acyl substitution 1,4 additionarrow_forward
- Explain mechanism - Base-Catalyzed Addition of H2O to a Carbonyl Group ?arrow_forward2) a) n-Butyllithium is used to deprotonate the following compounds. Draw the structures of the resulting organolithium compounds (assume they are monomeric). Me₂N SO₂ b) Explain the selectivity of deprotonation. c) Each organolithium is reacted with ethyltosylate. Draw the structures of the resulting products.arrow_forwardTranexamic acid, a drug useful against blood clotting, is prepared commercially from p-methylbenzonitrile. Following is one of the steps in its synthesis, draw the structure of the product of this step.arrow_forward
- The carboxylic acid G can be converted into the lactone H. Give a reagent for the above reaction.arrow_forwardThe mechanism for acidic hydrolysis of a nitrile resembles the basic hydrolysis, exceptthat the nitrile is first protonated, activating it toward attack by a weak nucleophile (water).Under acidic conditions, the proton transfer (tautomerism) involves protonation on nitrogen followed by deprotonation on oxygen. Propose a mechanism for the acid-catalyzedhydrolysis of benzonitrile to benzamide.arrow_forward(d) Draw the structures of compounds C and D and identify reagent E in the reaction scheme below. Outline a mechanism for the formation of compound B from compound . Но OH 1. LIAIH, 2. Н,о° 4 H,SO, catalyst A B E F OHarrow_forward
- Organic ChemistryChemistryISBN:9781305580350Author:William H. Brown, Brent L. Iverson, Eric Anslyn, Christopher S. FootePublisher:Cengage Learning