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4:15
YouTube
Organic Chemistry with Lluís Llorens Palomo
Nazarov Cyclization
The Nazarov Cyclization is the acid catalyzed ring-closure of divinyl ketones for the synthesis of cyclopentenones. Reaction mechanism: 1. Coordination of the Lewis acid to the carbonyl group and formation of a pentadienyl cation. 2. Conrotatory ring closure delivers a cyclic carbocation. 3. Elimination of the β-hydrogen. 4. Tautomerization of ...
5.8K views
Feb 26, 2022
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#Nazarov cyclization reaction Nazarov Cyclization Mechanism
SOLVED: Draw a mechanism for the following reaction and make sure to draw all three resonance structures of the sigma complex. For the mechanism, draw the curved arrows as needed. Include lone pairs and charges in your answer. Do not draw out any hydrogen explicitly in your products. Do not use abbreviations such as Me or Ph. Draw a mechanism for the following reaction and make sure to draw all three resonance structures of the sigma complex. For the mechanism, draw the curved arrows as needed.
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