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Furan derivatives. LXXXVII. The synthesis and ultraviolet spectra of 5-(4-X-phenylsulfonyl)-2-furaldehydes and 2-cyano-3-[5-(4-X-phenylsulfonyl)-2-furyl]acrylonitriles

R. Kada and J. Kováč

Department of Organic Chemistry, Slovak Technical University, 880 37 Bratislava

 

Abstract:  5-(4-X-Phenylsulfonyl)-2-furaldehydes, obtained from alkaline salts of 4-X-substituted benzenesulfinic acids (X = H, CH3, CH3CONH, CI, Br, (CH3)2N) and 5-halide-2-furaldehydes in dimethylformamide, were reacted with malonic acid dinitrile under conditions of Knoevenagel condensation to yield the corresponding 2-cyano-3-[5-(4-X-phenylsulfonyl)-2-furyl]acrylonitriles. Ultraviolet spectra of the synthesized compounds are interpreted.

Full paper in Portable Document Format: 304a502.pdf

 

Chemical Papers 30 (4) 502–507 (1976)

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