Stilbene may be synthesised with Z-selectivity from (~-bromobenzyl)benzyldiphenylphosphonium bromide by the action of amine bases. A series of stilbeues was synthesised by the action of N-bromosuecinimide and 2,2,6,6-tetramethyipiperidine directly upon dibenzyldiphenylphosphonium salts. The reaction
The first isolation of an episulphone intermediate from a Ramberg-Bäcklund reaction
✍ Scribed by Alan G. Sutherland; Richard J.K. Taylor
- Publisher
- Elsevier Science
- Year
- 1989
- Tongue
- French
- Weight
- 203 KB
- Volume
- 30
- Category
- Article
- ISSN
- 0040-4039
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✦ Synopsis
Episulphone 6 was isolated as a crystalline solid in 69% yield from the low temperature Ramberg-BBcklund reaction of a-iodosulphone 5 . The expected cyclopentene 7 was obtained when episulphone 6 was heated or treated with base and when the Ramberg-Backlund reaction was carried out under more forcing conditions.
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