A terminal conjugated diene system is present in certain natural products. Also it can be converted to 2-olefin or 3-olefin by selective reduction. But there appeared few synthetic methods for this system. For example, a rapidly developing coupling reaction of vinyl halides with various vinyl metal
A convenient method for the preparation of 1-olefins by the palladium catalyzed hydrogenolysis of allylic acetates and allylic phenyl ethers with ammonium formate
β Scribed by Jiro Tsuji; Tomio Yamakawa
- Book ID
- 108384732
- Publisher
- Elsevier Science
- Year
- 1979
- Tongue
- French
- Weight
- 222 KB
- Volume
- 20
- Category
- Article
- ISSN
- 0040-4039
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A highly regioselective reduction of propargylic acetates has been attained by using SmI2 and catalytic Pd(O) in the presence of 2,4-dimethyl-3-pentanol affording various types of allenes in high yields. Allenes not only constitute an important class of natural products but also serve as useful inte
## 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