Conformations of some 2-substituted furan and thiophen carbonyl compounds

Abstract

Experimental dipole moments and molar Kerr constants are reported for the following as solutes in cyclohexane or carbon tetrachloride at 25°: furan-2-carbaldehyde, 2-acetylfuran, thiophen-2-carbaldehyde, 2-acetylthiophen, phenyl 2-furyl ketone, phenyl 2-thienyl ketone, mesityl 2-furyl ketone, mesityl 2-thienyl ketone, 1-naphthyl 2-thienyl ketone, 2-naphthyl 2-thienyl ketone, and di-2-thienyl ketone. Analysis of the data establishes the conformational preferences of these molecules.