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Reactivity of 5-endo-hydroxy-4-azatricyclo[5.2.1.02,6]dec-8-en-3-ones and their isomerization initiated by acids and bases

Russ. J. Org. Chem. 2016, 52 (5), 661-669

DOI: 10.1134/s1070428016050080

Tkachenko I. V.; Tarabara I. N.; Omel’chenko I. V.; Pal’chikov V. A.

Study of isomerization of 5-endo-hydroxy-4-azatricyclo[5.2.1.02,6]dec-8-en-3-ones under the action of Lewis acids (MgBr2, AlCl3), CF3COOH, and NaH showed that the optimum catalyst of the process was trifluoroacetic acid. In reaction of 4-benzyl-5-endo-hydroxy-4-azatricyclo-[5.2.1.02,6]dec-8-en-3-one with anhydrous AlCl3 in benzene was unexpectedly isolated N-benzyl-3-(diphenylmethyl)bicyclo[2.2.1]hept-5-ene-2-carboxamide. A convenient method was developed for the preparation of 5-exo-alkoxy-4-alkyl(aryl)-4-azatricyclo[5.2.1.02,6]dec- 8-en-3-ones.

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