## Abstract Phenanthroquinone was added photochemically to allene and nine of its methyl, methoxy and methylthio derivatives. Several 2โalkylideneโ2,3โdihydrophenanthro[9,10โ__b__]โ1,4โdioxins were isolated; 2: 1โadducts were sometimes found as byproducts. The directiospecificity of the addition wa
The photochemical (4 + 2)-cycloaddition of ortho-quinones to triarylketenimines
โ Scribed by J. P. B. Baaij; J. Kamphuis; H. J. T. Bos
- Publisher
- Elsevier Science
- Year
- 2010
- Tongue
- English
- Weight
- 589 KB
- Volume
- 104
- Category
- Article
- ISSN
- 0165-0513
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๐ SIMILAR VOLUMES
Photocycloadditions of ptcridinc-L4,7-triones to alkenes are describcd. Irradiation of the pteridine-2,4,7-triones I ab in the prescncc of electron-deficient and neutral alkenes 2 gave the azetidines 3-11 through [ 2 + 5 ] cycloaddition reaction of the carbonnitrogen double bond of the ptcridine-2,4
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