SYNTHESIS OF HEXAHYDRO[1,4]DIAZOCINO[7,8,1-<i>jk</i>]CARBAZOLES AND 1-METHOXY-9-(β-VINYLETHYLAMINO)ETHYLCARBAZOLES
DOI:
https://doi.org/10.1007/1215Keywords:
hexahydrodiazocinocarbazoles, 1-methoxy-9-(β-vinylethylamino)ethylcarbazoles, pyrazine ring cleavage domino reaction, pyrazine ring extension domino reactionAbstract
3-Ethylhexahydropyrazino[3,2,1-jk]carbazole is converted into hexahydro[1,4]diazocino[7,8,1-jk]carbazoles by the action of methyl propiolate and acetylacetylene in acetonitrile and into 1-methoxy-9-(β-vinylethylamino)ethylcarbazoles by the action of acetylenedicarboxylic ester and methyl propiolate in methanol. 3-Benzyl-substituted pyrazinocarbazole does not react with alkynes.
Authors: L. G. Voskressensky, V. G. Granik, T. N. Borisova, A. A. Titov, E. I. Grishina, E. A. Sorokina, and A. V. Varlamov.
English Translation in Chemistry of Heterocyclic Compounds, 2012, 48 (4), pp 620-624