Abstract
AbstractReaction of 5‐aminooxazoles with N‐phenylmaleimide gave 7‐hydroxy‐2‐phenylpyrrolo[3,4‐c]pyridine‐1,3‐diones and 7‐amino‐2‐phenylpyrrolo[3,4‐c]pyridine‐1,3‐diones via tricyclic adducts. The ratio of the 7‐hydroxy compound and 7‐amino compound depended on the basicity of the leaving group of the adducts. The reaction of 5‐acetaminooxazole with dienophiles is described.
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