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- W2950775570 abstract "2-Hydroxy-2,2′-biindan-1,1′,3,3′-tetrone 1 upon stirring with moderately activated and deactivated arenes in superacidic triflic acid (CF 3 SO 3 H, TfOH) medium produces arylated adducts 2-aryl-2,2′-biindan-1,1′,3,3′-tetrones 3 within 1-2 h. Prolonged stirring (12–24 h) of the same reaction mixture gives rearranged products 3-(aryl-1,3-indanedionylmethylene)isobenzofuranones 4 involving three types of regioselectivity. The arylated adducts 3 and rearranged products 4 undergo nucleophilic ring opening and condensation with hydrazine hydrate to produce 4-substituted mono- and diphthalazinones depending upon the reaction temperature." @default.
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- W2950775570 date "2007-01-01" @default.
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- W2950775570 title "Superacid-catalysed Arylation and Rearrangement in 2-Hydroxy-2,2′-Biindan-1,1′,3,3′-tetrone and Facile Synthesis of 4-Substituted Phthalazinones" @default.
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- W2950775570 doi "https://doi.org/10.3184/030823407780199603" @default.
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