Chemistry of Heterocyclic Compounds p. 1054 - 1058 (1993)
Update date:2022-08-05
Topics:
Alarcon, Jorge A. R.
Soldatenkov, A. T.
Soldatova, S. A.
Samalloa, Alicia U.
Obando, Juan U.
Prostakov, N. S.
2,3,8,9-Tetramethoxy-11-phenyldibenz<2,3;7,8>indolizine was obtained in high yield from (6,7-dimethoxyisoquinolin-1-yl)-(3,4-dimethylphenyl)phenylcarbinol by cyclization in the presence of formic acid.The behavior of (6,7-dimethoxyisoquinolin-1-yl)-(3,4-dimethoxyphenyl)methylcarbinol and (6,7-dimethoxyisoquinolin-1-yl-(3,4-dimethoxyphenyl)carbinol was studied under these same conditions. 2,3,7,8-Tetramethoxy-11-phenyl-5,6-dihydrodibenz<2,3;7,8>indolizine was obtained by hydrogenation on rhenium heptasulfide.
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