134369-95-2Relevant academic research and scientific papers
Studies in synthesis of xanthones: Part VIII
Patel G N,Trivedi K N
, p. 437 - 439 (2007/10/02)
Thermal condensation of the methyl esters of 2,6-dihydroxy-, 2,4-dihydroxy- and 2,4,6-trihydroxy-benzoic acids has been carried out with different phenols in refluxing diphenyl ether to give various xanthones in good yields.Condensation of methyl 5-bromo-2-hydroxybenzoate with hydroquinone gives 7-bromo-1,4-dihydroxyxanthone (19) and 7-bromo-2-hydroxyxanthone (20).However, condensation of methyl 5-chloro-2,6-dihydroxybenzoate with phloroglucinol gives 5-chloro-1,3,8-trihydroxyxanthone (21).The structures of these products have been established by IR, mass and PMR spectral studies.
