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High stereoselectivity in the Wittig reaction induced by the interaction of charges

✍ Scribed by Ulrich Klar; Peter Deicke


Publisher
Elsevier Science
Year
1996
Tongue
French
Weight
201 KB
Volume
37
Category
Article
ISSN
0040-4039

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πŸ“œ SIMILAR VOLUMES


Co-operative ortho-effects on the Wittig
✍ Eoin C Dunne; Γ‰amonn J Coyne; Peter B Crowley; Declan G Gilheany πŸ“‚ Article πŸ“… 2002 πŸ› Elsevier Science 🌐 French βš– 87 KB

The E/Z ratios of the stilbenes 1 formed in the Wittig reaction of ortho-halo substituted benzyltriphenylphosphonium salts 2 and benzaldehydes 3 were determined. It was found that there is a co-operative effect of one ortho-halo group on each of the two reacting partners which increases Z-selectivit