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Synthesis of New Pyrano Pyrazole Derivatives | ||
| Al-Mustansiriyah Journal of Science | ||
| Article 1, Volume 22, Issue 4, 2011, Pages 166-174 | ||
| Author | ||
| Redha I. H. AL-Bayati | ||
| Abstract | ||
| In this work ,3,4-dimethyl pyrano pyrazole -6-one(1) and its derivatives(2-11) has been synthesized by heating hydrazine derivatives with ethyl acetoacetate in an oil bath 160 ͦ C .A cylation of compound (1) with acetyl chloride and acetic anhydride a compound (12).The chalcones (13-16) was prepared by reaction of compound (12) with aryl aldehydes . However the reaction of compound (1) with propargyl chloride in the presence of triethyl amine a compound (20).Further more treatment of the last compound with secondary amines a mannich base(21-25).The structure of the synthesized compounds were deduced by using some spectroscopic methods, UV –Visible, FT-IR and ¹ H NMR. | ||
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