Thermal cyclization of a vinylallene to a cyclobutene
β Scribed by Emanuel Gil-Av; Joseph Herling
- Publisher
- Elsevier Science
- Year
- 1967
- Tongue
- French
- Weight
- 153 KB
- Volume
- 8
- Category
- Article
- ISSN
- 0040-4039
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π SIMILAR VOLUMES
Blectrophilic additions of sulphenyl chlorides to olefins have been extensively studied and are considered to be highly stereospecific trans-additions proceeding in two steps via episulphonium (thiiranium) ion intennediates.l Simple olefins like cyclohexene 2a as well as strained olefins e.g.,noroor
Sumnary: A model study for the synthesis of the germacranes is described which utilizes a consecutive oxy-Copelcyclobutene ring opening rearrangement sequence. The e,y-unsaturated enone necessary for the rearrangement is obtained directly from the photocycloaddition of ailene and cyclohexenone. We a