OCH3 ОСHЗ .СнО ОСН, "СНO CHO 1,2-disubstituted product 1,3-disubstituted product major minor

Organic Chemistry
9th Edition
ISBN:9781305080485
Author:John E. McMurry
Publisher:John E. McMurry
Chapter4: Organic Compounds: Cycloalkanes And Their Stereochemistry
Section4.3: Stability Of Cycloalkanes: Ring Strain
Problem 8P: Each H↔H eclipsing interaction in ethane costs about 4.0 kJ/mol. How many such interactions are...
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Diels–Alder reaction of a monosubstituted diene (such as CH2=CH– CH=CHOCH3) with a monosubstituted dienophile (such as CH2=CHCHO) gives a mixture of products, but the 1,2-disubstituted product often predominates. Draw the resonance hybrid for each reactant, and use the charge distribution of the hybrids to explain why the 1,2-disubstituted product is the major product.

OCH3
ОСHЗ
.СнО
ОСН,
"СНO
CHO
1,2-disubstituted product
1,3-disubstituted product
major
minor
Transcribed Image Text:OCH3 ОСHЗ .СнО ОСН, "СНO CHO 1,2-disubstituted product 1,3-disubstituted product major minor
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