Chemistry of Heterocyclic Compounds p. 1178 - 1182 (1987)
Update date:2022-09-26
Topics:
Shanazarov, A. K.
Solov'eva, N. P.
Chistyakov, V. V.
Sheinker, Yu. N.
Granik, V. G.
It was established that acetals of lactams react with enamino diketones to give cyclic dienediamines.The dienediamines obtained in the reaction of N-methyl-2-pyrrolidone diethylacetal with 2-aminomethylenedimedone and 2-N,N-dimethylaminomethylenedimedone are converted to 3-(β-methylamino)ethyl-6,6-dimethyl-5,6,7,8-tetrahydro-5-coumarinone hydrochloride when they are heated in dilute hydrochloric acid.
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