Photocycloaddition of arylethenes to 2-substituted-1,4-naphthoquinones and reactions of the cyclobutane adduct isomers
β Scribed by Cleridou, Stephanie; Covell, Christopher; Gadhia, Anita; Gilbert, Andrew; Kamonnawin, Patcharawalai
- Book ID
- 120456153
- Publisher
- Royal Society of Chemistry
- Year
- 2000
- Weight
- 182 KB
- Volume
- 7
- Category
- Article
- ISSN
- 1472-7781
- DOI
- 10.1039/a909384b
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π SIMILAR VOLUMES
The structure and configuration of the C4-dimers of 2-ethoxy-2-methoxy-1,4-naphtho uinone and related compounds are elucidated from an extensive 1H and 7 3C n.m.r. study. The importance of the sign of the proton-proton and 13C-1H coupling constants in determining the structures of these type of com
afforded Diels-Alder adduct 14 and fragmentation product 32 with 2 and 3 respectively whereby reaction occurred on the less substituted double bond. No adducts were isolated upon treatment of naphthoquinone-sulfide 22 with either 2 or 3. The Diels-Alder adducts of benzoquinone-sulfoxide 9 and naphth