Cyclopentene-regioselective palladium-catalyzed cycloisomerization under neutral and bis-cationic reaction conditions
β Scribed by Andreas Heumann; Laurent Giordano; Alphonse Tenaglia
- Publisher
- Elsevier Science
- Year
- 2003
- Tongue
- French
- Weight
- 142 KB
- Volume
- 44
- Category
- Article
- ISSN
- 0040-4039
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β¦ Synopsis
A series of 1,6-dienes is cyclized to cyclopentene derivatives under neutral conditions with palladium chloride in ethanol or with in situ generated LPd 2+ in acetonitrile.
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## Abstract The dicopper(I)βcomplex is a versatile catalyst for the crossβcoupling of a broad spectrum of aryl halides, where the bromides are generally the most suitable ones.
## Homoannular conjugated dienes in decalin systems can be prepared by the palladiumcatalyzed elimination reaction of a-allylic carbonates, and heteroannular dienes are obtained from /.%allylic carbonates. Both homoannular and heteroannular conjugated dienes in decalin systems are present in a num