ORGANIC CHEMISTRY (PETRO)
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ORGANIC CHEMISTRY
Dr Nam T. S. Phan
Faculty of Chemical Engineering
HCMC University of Technology
Office: room 211, B2 Building
Phone: 8647256 ext. 5681
Email:
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Chapter 6:
CONJUGATED
ALKADIENES
A non-polar molecule
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Reactions of isolated dienes are just like
those of alkenes
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NOMENCLATURE OF
ALKADIENES
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PREPARATION OF 1,3-ALKADIENE
Dehydrogenations
Eliminations of unsaturated alcohols & alkyl halides
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ELECTROPHILIC ADDITION
REACTIONS
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Reaction mechanism:
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DIELS-ALDER REACTIONS
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Reactivity of the dienophile is increased if 1 or
more electron-withdrawing groups are present
Partial positive charge
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Stereochemistry
Racemic
mixture
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In order to participate in a Diels-Alder reaction,
the diene must be in an s-cis conformation
C1 & C4 are too far apart
to react with the
dienophile
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Polymerizations
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