The title compounds were synthesized via condensing acetonylphthalimide and 4‐acetonyloxyphthalazine‐1‐one with dimethylformamide dimethylacetal (DMFDMA). The reaction of these enaminones with electrophiles and nucleophiles is reported as a route to polyfunctional heteroaromatics.
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Al‐Mousawi et al. (2004) studied this question.
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