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Thiophene derivatives. II. α,β-Unsaturated ketones of phenylthiophene series

J. Kováč, Ľ. Fišera, and R. Frimm

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

 

Abstract: The preparation is described of  α,β-unsaturated ketones of t h e phenylthiophene series by condensation of 5-(X-phenyl)-2-thiophenecarbaldehydes (X = 4-N02 , 4-Cl, 3-Cl, 4-Br, H, 4-CH3 , 3-CH3, 4-OCH3) with acetone, 2 - acetyIfuran, 2-acetylthiophene, and acetophenone. Infrared and ultraviolet spectra of the prepared derivatives are interpreted. The presence of individual conformers is discussed by means of t h e stretching vibrations of a carbonyl group and those of the C = C bonds.

Full paper in Portable Document Format: 274a512.pdf

 

Chemical Papers 27 (4) 512–520 (1973)

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