Synthesis and structure of novel 3,4-annelated coumarin derivatives
Condensation of 4‐chloro‐2‐oxo‐2H‐chromene‐3‐carbonitrile (1) with heteroarylamines 2a‐d in acetonitrile containing a catalytic amount of triethylamine followed by spontaneous intramolecular cyclization gave the novel coumarin derivatives 3a‐d, respectively. These compounds underwent acid hydrolysis...
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| Published in: | Journal of heterocyclic chemistry Vol. 45; no. 1; pp. 295 - 297 |
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| Main Authors: | , , , |
| Format: | Journal Article |
| Language: | English |
| Published: |
Hoboken
Wiley-Blackwell
01-01-2008
Wiley‐Blackwell |
| Online Access: | Get full text |
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| Summary: | Condensation of 4‐chloro‐2‐oxo‐2H‐chromene‐3‐carbonitrile (1) with heteroarylamines 2a‐d in acetonitrile containing a catalytic amount of triethylamine followed by spontaneous intramolecular cyclization gave the novel coumarin derivatives 3a‐d, respectively. These compounds underwent acid hydrolysis giving the corresponding oxoderivatives 4a‐d. The structural assignments of the synthesized compounds were based on elemental, IR, 1H and 13C NMR analyses. |
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| Bibliography: | ark:/67375/WNG-2ZSS76VH-1 ArticleID:JHET5570450137 Ministry of Science and Environmental Protection of Serbia istex:33B1F8E94353ED004B0A7FFAE62C8F2B2B8F7F41 |
| ISSN: | 0022-152X 1943-5193 |
| DOI: | 10.1002/jhet.5570450137 |