Syntheses of 5??hydroxy??2??(phenyl or styryl) chromones and of some halo derivatives

…, A Silva, JAS Cavaleiro

文献索引：Pinto, Diana C. G. A.; Silva, Artur M. S.; Cavaleiro, Jose A. S. Journal of Heterocyclic Chemistry, 1996 , vol. 33, # 6 p. 1887 - 1893

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被引用次数: 58

摘要

Abstract One-pot syntheses of 5-hydroxy-2-(phenyl or styryl) chromones and the corresponding 6-and 8-monoiodo-and 6, 8-diiodochromones have been developed. The procedures involve oxidative cyclization of 2′-benzyloxy-6′-hydroxychalcones and 2′- benzyloxy-6′-hydroxy-2-cinnamylideneacetophenones and electrophilic substitution processes on the chromone moieties; such procedures were also applied to the syntheses ...