volume 55, issue 4, P893-898 2018
DOI: 10.1002/jhet.3115
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Abstract: Interaction of 2‐(bromoacetyl)‐3H‐benzo[f]coumarin (1) with salicylaldehyde afforded 2‐(2‐oxo‐2‐(3H‐benzo[f]coumarin‐2‐yl)ethoxy)benzaldehyde (2) which underwent self‐condensation in refluxing dimethylformamide (DMF) to afford 2‐(2‐benzofuroyl)‐3H‐benzo[f]coumarin (3). Treatment of 1 with o‐aminothiophenol (4) gave 2‐(2‐((2‐aminophenyl)thio)acetyl)‐3H‐benzo[f]coumarin (5). Refluxing of 5 in DMF led to formation of 2‐(4H‐[1,4]‐benzothiazin‐3‐yl)‐3H‐benzo[f]coumarin (6). Treatment of 1 with aryl amines 7a–d in b…

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