ACETALS OF LACTAMS AND ACID AMIDES. 33. REACTION OF SECONDARY ENAMINO AMIDES WITH AMIDE ACETALS AND SYNTHESIS OF CONDENSED PYRIMIDINES

Article abstract of DOI:10.1007/BF00513175

Condensed pyrimidines were synthesized by the reaction of dimethylformamide and dimethylacetamide diethylacetals with secondary enamino amides.It is shown that the piperido<1,2-c>pyrimidine derivative undergoes rearrangement to a 1,6-naphthyridine derivative under mild conditions.