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Microwave assisted synthesis of 2-amino-6-methoxy-4H-benzo[h]chromene derivatives
Ahmed Mohamed El-Agrody (1,*)
, Al-Anood Mohamed Al-Dies (2) , Ahmed Mahmoud Fouda (3) (1) Chemistry Department, Faculty of Science, Al-Azhar University, Nasr City, Cairo, 11884, Egypt
(2) Chemistry Department, Faculty of Science, King Khalid University, Abha, 61413, Saudi Arabia
(3) Chemistry Department, Faculty of Science, King Khalid University, Abha, 61413, Saudi Arabia
(*) Corresponding Author
Received: 10 Sep 2013, Accepted: 13 Oct 2013, Published: 31 Mar 2014
Abstract
A convenient and efficient method using microwave assisted synthesis of 4H-benzo[h]chromenes (7 and 8), by the reaction of 4-methoxy-1-naphthol (1) with a mixture of aromatic aldehydes (2) and malononitrile (3) or ethyl cyanoacetate (5) and also, by the reaction of 4-methoxy-1-naphthol (1) with α-cyanocinnamonitriles (4) or ethyl α-cyanocinnamates (6) in ethanolic piperidine solution was examined. Structures of the newly synthesized compounds were established on the basis of spectral data, IR, 1H NMR, 13C NMR, 13C NMR-DEPT and MS data.
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DOI: 10.5155/eurjchem.5.1.133-137.923
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