## 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
Formation of a terminal conjugated diene system by the palladium catalyzed elimination reactions of allylic acetates and phenyl ethers
โ Scribed by Jiro Tsuji; Tomio Yamakawa; Mitsumasa Kaito; Tadakatsu Mandai
- Publisher
- Elsevier Science
- Year
- 1978
- Tongue
- French
- Weight
- 201 KB
- Volume
- 19
- Category
- Article
- ISSN
- 0040-4039
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โฆ Synopsis
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 reagents catalyzed by transition metal compounds is one acceptable method.
๐ SIMILAR VOLUMES
We have recently reported a highly stereoand regioselective procedure for the synthesis of conjugated dienes by a Pd-catalyzed reaction of alkenylalanes with alkenyl halides2 (eq 1: MLn = AL(Bu-~)~).