ACETALS OF LACTAMS AND ACID AMIDES. 48. REACTION OF ENAMINO DIKETONES WITH AMIDE ACETALS. SYNTHESIS OF DERIVATIVES OF COUMARIN AND CARBOSTYRIL

Article abstract of DOI:10.1007/BF00479362

It was established that the reaction of derivatives of 2-aminomethylenecyclohexane-1,3-dione with N,N-dimethyl-diethylacetal gives dienediamines, heating of which in aqueous hydrochloric acid leads, depending on the structure, to derivatives of carbostyri