Abstract
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-dimethyl-aminomethylenedimedone 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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V. G. Granik, A. K. Shanazarov, N. P. Solov'eva, V. V. Chistyakov, I. V. Persianova, and Yu. N. Sheinker, Khim. Geterotsikl. Soedin., No. 11, 1470 (1987).
V. G. Granik, A. N. Zhidkova, and R. G. Glushkov, Usp. Khim., 46, 685 (1977).
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See [1] for Communication 48.
Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 11, pp. 1477–1482, November, 1987.
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Shanazarov, A.K., Solov'eva, N.P., Chistyakov, V.V. et al. Acetals of lactams and acid amides. 49. Reaction of N-methyl-2-pyrrolidone and N-methyl-2-piperidone acetals with enamino diketones. Chem Heterocycl Compd 23, 1178–1182 (1987). https://doi.org/10.1007/BF00479363
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DOI: https://doi.org/10.1007/BF00479363