An unusual reductive cyclization
β Scribed by R. Kannan; P. Geetha; S. Swaminathan
- Book ID
- 104241274
- Publisher
- Elsevier Science
- Year
- 1984
- Tongue
- French
- Weight
- 199 KB
- Volume
- 25
- Category
- Article
- ISSN
- 0040-4039
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β¦ Synopsis
Li-h.? reduction of 14-Ethynyl-lfi -hydroxy-6,oxo-Sa-methyl-1,2,3,4, 6,7,8,8a octah J ronaphthalene 5 furnishes, in addition to reported products, the tricyclic compound 8.
Metal_ammonia reductions of the ketones 1 and 3 under controlled conditions are knownl to give the cyclopropanes 2 2nd 4 fespectively.
π SIMILAR VOLUMES
Tri-and tetrasubstimted 1,4-dien-3-oues 1 were treated with Lewis acid in the presence of tdethylsilane, furnishing either silyl euol ethers 4 or cyclopentanunes 5 in goud yields, depending upon wt~k-up conditions. This reaction is l~resumed to occur through oxyallyl intea'mndiate 3, which undergoes
arm-bis(Allylic acetates) undergo regioselective intramolecular reductive coupling with hexamethyldistannane catalyzed by Pd(0).