Reactions of 4, 6??bis (acetyl) resorcinol with alkoxycarbonylalkylidene (triphenyl) phosphoranes. Preparation of coumarin derivatives

…, C Bezergiannidou??Balouktsi…

Index: Nicolaides, D. N.; Fylaktakidou, K. C.; Bezergiannidou-Balouktsi, C.; Litinas, K. E. Journal of Heterocyclic Chemistry, 1994 , vol. 31, # 1 p. 173 - 176

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Citation Number: 12

Abstract

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.