Synthesis of new furopyrans and angularly fused furopyranochromenes from 3-arylmethylidenefuran-2-ones
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Reactions of 5-aryl-3-arylmethylidenefuran-2-ones with malononitrile gave 6-amino-2,4-diaryl-4Hfuro[2,3-b]pyran-5-carbonitriles and 2-aryl-5-imino-5H,11bH-furo[3′,2′: 5,6]pyrano[3,4-c]chromen-6-amines as potentially biologically active substances.
KeywordsMalononitrile Cyano Group Ethyl Acetoacetate Michael Adduct Schott Filter
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