Abstract

AbstractThe preparation of the first examples of class II mesoionic bispurinones is described. Arylaminobithiazole 3 is cyclized by condensation with bis(2,4,6‐trichlorophenyl) methylmalonate to yield anhydro 3,3′‐bis(6‐methyl‐8‐aryl‐5‐hydroxy‐7‐oxothiazolo[3,2‐a]pyrimidinium hydroxide).

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