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Reactions of 4,6-bis(acetyl)resorcinol with alkoxycarbonylalkylidene(triphenyl)phosphoranes. Preparation of coumarin derivatives |
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| Authors: | D. N. Nicolaides K. C. Fylaktakidou C. Bezergiannidou-Balouktsi K. E. Litinas |
| Abstract: | Reaction of compound 1 with ylide 2a affords compounds 3a, 3b and coumarins 4a, 5a, 5b, 6a in 77% total yield. Reaction of 1 with ylide 2b affords coumarin 4b . The acetylderivatives obtained, react further with ylides 2a-c to give pyrano[3,2-g]chromene-2,8-diones 6b-d . |
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