Concept explainers
(a)
Interpretation:
Effect of electron donating substituents in the diene of Diels-Alder reactions has to be predicted.
Concept Introduction:
Diels-Alder reaction:
A conjugated diene reacts with a compound containing a carbon-carbon double bond. It is a cycloaddition reaction, where two reactants form a cyclic product.
(b)
Interpretation:
The effect of electron donating substituents in dienophile of Diels-Alder reactions has to be predicted.
Concept Introduction:
Diels-Alder reaction:
A conjugated diene reacts with a compound containing a carbon-carbon double bond. It is a cycloaddition reaction, where two reactants form a cyclic product.
(c)
Interpretation:
The effect of electron withdrawing substituents in diene of Diels-Alder reactions has to be predicted.
Concept Introduction:
Diels-Alder reaction:
A conjugated diene reacts with a compound containing a carbon-carbon double bond. It is a cycloaddition reaction, where two reactants form a cyclic product.
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Essential Organic Chemistry (3rd Edition)
- Label each diene as reactive or unreactive in a Diels–Alder reaction.arrow_forwardWhat is the major organic product of the following Diels-Alder reaction? Me₂N. A. B. C. D. Me₂N Me₂N Me₂N OHC Me₂N CHO CHO CHO CHO 5 heatarrow_forwardDeconstruct the given Diels–Alder adduct. Draw the reactants (A and B), in any order, that would be needed to produce the Diels–Alder adduct.arrow_forward
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- Why a conjugated diene is more stable than an isolated diene ?arrow_forward10. The following compound was produced in a Diels-Alder reaction. COOH a) How many sp³ hybridized carbons are in this molecule? b) Is this molecule chiral? c) Are the carboxylic acid substituents electron donating group or electron withdrawing group? d) Draw the diene and dienophile which would react together to give this product.arrow_forwardConsider the four trienes E–H.a.Rank compounds E–H in order of increasing heat of hydrogenation. b.Which compound is most reactive in the Diels–Alder reaction? c. Which compound(s) are unreactive in the Diels–Alder reaction? d.Which compound absorbs the longest wavelength of ultraviolet light?arrow_forward
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