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
Relative reactivity and stereoselectivity in the Wittig reactions of substituted benzaldehydes with benzylidenetriphenylphosphorane
β Scribed by Yamataka, Hiroshi; Nagareda, Katsushi; Ando, Katsuhiro; Hanafusa, Terukiyo
- Book ID
- 120624867
- Publisher
- American Chemical Society
- Year
- 1992
- Tongue
- English
- Weight
- 653 KB
- Volume
- 57
- Category
- Article
- ISSN
- 0022-3263
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