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Quantitative treatment of the ortho-effect in reactions of ortho-substituted phenylmercaptoacetic acids

✍ Scribed by C. Srinivasan; P. Subramaniam


Book ID
112906666
Publisher
Indian Academy of Sciences,Royal Society of Chemistry
Year
1988
Tongue
English
Weight
379 KB
Volume
100
Category
Article
ISSN
0253-4134

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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