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Uranium-mediated methylenation of carbonyl compounds

✍ Scribed by Dormond, Alain; El Bouadili, Abdelaziz; Moise, Claude

Book ID
127084655
Publisher
American Chemical Society
Year
1987
Tongue
English
Weight
275 KB
Volume
52
Category
Article
ISSN
0022-3263

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Methylenation of carbonyl compounds with
Methylenation of carbonyl compounds with Znξ—ΈCH2Br2ξ—ΈTiCl4. Application to gibberellins
✍ Luciano Lombardo πŸ“‚ Article πŸ“… 1982 πŸ› Elsevier Science 🌐 French βš– 205 KB

A highly active species prepared from Zn-CH2Br2-Tic14 reacted instantaneously with aldehydes and ketones to give methylenated products with exceptional selectivity. Methylenation of carbonyl derivatives to give olefins, i.e. R2C=O + R2C=CH2, by means of the Wittiq reaction' is one of the most useful