1,3-Dipolar cycloaddition reaction of carbonyl ylide with o-quinones afforded novel highly oxygenated spirocyclic compounds.
Reactions of quinones with ylides
β Scribed by W.W. Sullivan; D. Ullman; H. Shechter
- Book ID
- 104239046
- Publisher
- Elsevier Science
- Year
- 1969
- Tongue
- French
- Weight
- 231 KB
- Volume
- 10
- Category
- Article
- ISSN
- 0040-4039
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## Abstract In Wittig reaction of some Ξ±βmethylβ and Ξ±βmethyleneβsubstituted phosphorus ylides with __o__βquinones, benzo[__b__]furan derivatives were obtained __via__ the cyclization of the __o__βvinylphenols, initially formed from the tautomerization of the corresponding intermediate __o__βquinon
Very little is known about the reactions of phosphorus ylides with a-imino carbonyl compounds. Treatment of monoximes and monohydrazones of a-diketones with triphenylvinylphosphonium bromide gave moderate yields of 1 -hydroxypyrroles, 1 -aminopyrroles, or 2,3-dihydropyridazines '). The formation of