Synthesis of substituted benzoxazinylthieno[2,3-b]pyridines by the reaction of (3-cyanopyridin-2-ylthio)acetic acids or their amides with o-aminophenyl(diphenyl)carbinol |
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| Authors: | E. A. Kaigorodova L. D. Konyushkin A. A. Osipova E. A. Gavrilova E. V. Gromachevskaya G. D. Krapivin |
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| Affiliation: | (1) Kuban State Technological University, 2 ul. Moskovskaya, 350072 Krasnodar, Russian Federation;(2) N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 47 Leninsky prosp., 119991 Moscow, Russian Federation |
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| Abstract: | A general method for the synthesis of 3-amino-2-(4,4-diphenyl-4H-3,1-benzoxazin-2-yl)thieno[2,3-b]pyridines was proposed. The method involves reactions of (3-cyanopyridin-2-ylthio)acetic acids or their amides with o-aminophenyl(diphenyl)carbinol in nitromethane in the presence of perchloric acid followed by neutralization of the resulting salts.__________Published in Russian in Izvestiya Akademii Nauk. Seriya Khimicheskaya, No. 12, pp. 2759–2762, December, 2004. |
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| Keywords: | (3-cyanopyridin-2-ylthio)acetic acid (3-cyanopyridin-2-ylthio)acetamide o-aminophenyl(diphenyl)carbinol 4,4-diphenyl-4H-3,1-benzoxazine 3-amino-2-(4,4-diphenyl-4H-3,1-benzoxazin-2-yl)thieno[2,3-b]pyridine |
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