Craig A. Obafemi

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2,3-Dichloroquinoxaline and some of its derivatives have been reacted with malononitrile and ethyl cyanoacetate to yield a variety of 3-chloro-2-(cyanomethylene)- 1,2-dihydroquinoxaline derivatives. The reaction of 3-chloro-2-(dicyanomethylene)-1,2- dihydroquinoxaline (2e) with pyridine and its methyl derivatives led to the zwitterionic structures 6a-6c.(More)
A simple and efficient method has been developed for the synthesis of various 2-quinoxalinone-3-hydrazone derivatives using microwave irradiation technique. The series of 2-quinoxalinone-3-hydrazone derivatives synthesized, were structurally confirmed by analytical and spectral data and evaluated for their antimicrobial activities. The results showed that(More)
In the title compound, C(22)H(24)N(2)O(2)·H(2)O, the co-crystallized water mol-ecule inter-acts with the N and O atoms of the mol-ecule through O(w)-H⋯N, O(w)-H⋯O(meth-yl) and N-H⋯O(w) hydrogen-bonding inter-actions. These hydrogen bonds, along with the inter-molecular N-H⋯O=C hydrogen-bonding inter-actions, connect the mol-ecules into a three-dimensional(More)
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