Concept explainers
Interpretation:
The mechanism for the given conversion has to be proposed.
Concept introduction: When two molecules of an ester undergo condensation is called claisen condensation. Like in aldol reaction, in claisen condensation one molecule is a nucleophile and the other molecule is an electrophile.
A claisen condensation reaction is a reversible reaction and occurs in the presence of a strong base.
The first step of claisen condensation is the removal of a proton from alpha carbon by a base and then the addition of enolate ion formed to the second ester molecule forming a β-ketoester.
A crossed-claisen condensation is also a condensation reaction between a
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Chapter 19 Solutions
EP ORGANIC CHEMISTRY-OWL V2 ACCESS
- 21) Propose a mechanism for the following reaction. OH H20, H*arrow_forwardProvide the reagent necessary and mechanism for the transformation below (more than one step is required). Additionally provide the IUPAC name for the starting materialarrow_forwardTreatment of W with CH3Li, followed by CH3I, affords compound Y (C7H14O) as the major product. Y shows a strong absorption in its IR spectrum at 1713 cm−1, and its 1H NMR spectrum is given below. (a) Propose a structure for Y. (b) Draw a stepwise mechanism for the conversion of W to Y.arrow_forward
- Draw the products formed when p-methylaniline (p-CH3C6H4NH2) istreated with following reagent. (CH3)2C=Oarrow_forwardAcyclovir is an effective antiviral agent used to treat the herpes simplex virus. (a) Draw the enol form of acyclovir, and explain why it is aromatic. (b) Why is acyclovir typically drawn in its keto form, despite the fact that its enol is aromatic?arrow_forwardIdentify the reagents necessary to accomplish each of the following transformations.arrow_forward
- Organic Chemistry: A Guided InquiryChemistryISBN:9780618974122Author:Andrei StraumanisPublisher:Cengage LearningOrganic ChemistryChemistryISBN:9781305580350Author:William H. Brown, Brent L. Iverson, Eric Anslyn, Christopher S. FootePublisher:Cengage Learning
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