Reactions of ethyl azidoformate and substituted benzoyl azides with carbonyl-stabilized sulfonium ylides
✍ Scribed by E. Van Loock; G. L'abbé; G. Smets
- Publisher
- Elsevier Science
- Year
- 1972
- Tongue
- French
- Weight
- 524 KB
- Volume
- 28
- Category
- Article
- ISSN
- 0040-4020
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📜 SIMILAR VOLUMES
Carbonyl-stabilized sulfonium ylides readily react with elemental sulfur and selenium to afford 1,3-oxathiole and 1,3-oxaselenole derivatives, respectively, in good yields, thus providing a simple method for constructing these ring systems which uses easily accessible compounds as starting materials
During the course of our investigation of the synthesis of oic-triasoles by reacting a-keto-and a-ester phosphorus ylides with acyl asides and ethyl asidoformate (1 + 2 + z), we found that the N-l substituted triasoles,isomerised to the N-2 substituted triasoles (1 + A) under the basic reaction cond
The active ketenylidene-(2a) or thioketenylidenetriphenylphosphoranes (2b) react with 2-benzylidene-1,3-indandione (1), 5-benzylidenebarbituric acid (11), and 4-benzylidene-1,2-diphenyl-3,5-pyrazolidinedione (16) to give the corresponding pyranones and thioxopyranones (3a,b, 12a,b) and (17a,b), resp