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The reaction of a side-chain carboxamide with DMFDEA joins the NH to a neighbouring ring-NH and a fused pyrimidinone ring is formed. The same type of reaction may operate in acetic acid when carboxamide and ring-nitrogen are in different rings. [Pg.414]

See other pages where Carboxamide and ring is mentioned: [Pg.410] [Pg.412] [Pg.414]