Synthesis and characterization of some new 4,4′‐(1,4‐phenylene)dipyrimidine and 6,6′‐(1,4‐phenylene)‐di(pyridin‐2(1H)‐one) derivatives |
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| Authors: | Raafat M Shaker |
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| Abstract: | A series of new 4,4′‐(1,4‐phenylene)dipyrimidines 5a–c, 8a–c , and 10a,b have been synthesized from the reaction of amidines 1a–c with the dienaminone 2 , bis‐chalcone 6 , or ylidenemalono‐ nitrile 9 . The reaction of malononitrile and ethyl cyanoacetate with 2 gave 6,6′‐(1,4‐phenylene)di(pyridin‐2(1H)‐ones) ( 15a,b ). The structures of the products were proved by elemental analyses, IR, MS, 1H, and 13C NMR spectroscopy. © 2005 Wiley Periodicals, Inc. Heteroatom Chem 16:507–512, 2005; Published online in Wiley InterScience ( www.interscience.wiley.com ). DOI 10.1002/hc.20150 |
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