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A short and efficient construction of the dibenzo[c,h]chromen-6-one skeleton
We hereby report a major revision of the synthetic methodology for construction of the
dibenzochromenone skeleton. Homophthalic acid derivatives were reacted with
thionylchloride/DMF in the presence of NaN3. As the main product, dibenzochromenone
derivatives were obtained. When the reaction was performed in the absence of NaN3, only
isochromenones were formed. The mechanism of the formation of these products is discussed.Turkiye Bilimsel ve Teknolojik Arastirma Kurumu (TUBITAK) (108-M168); Department of Chemistry at Middle East Technical University; Turkish Academy of SciencesPublisher's Versio