Synlett

Synthesis of Hydroxy-7H-benzo [c] fluoren-7-ones

PJ Coelho, MA Salvador, MM Oliveira, LM Carvalho

Index: Coelho, Paulo J.; Salvador, Maria A.; Oliveira, M. Manuel; Carvalho, Luis M. Synlett, 2004 , # 6 p. 1015 - 1018

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Citation Number: 4

Abstract

Abstract An efficient synthesis of 2-, 3-and 4-hydroxy-7H-benzo [c] fluoren-7-ones, useful intermediates for the synthesis of photochromic naphthopyrans, is described. The synthetic approach involves the use of oxazolines as activating groups for aromatic nucleophilic substitution and starts with readily available dimethoxynaphthaldehydes.