This account summarizes the results of mechanism studies on the nitrile-forming eliminations from (E)and (Z)-arylaldehyde O-benzoyloximes promoted by 1,8-diazabicyclo-[5.4.0]undec-7ene (DBU) in MeCN, R1R2NH in MeCN, and R1R2NH/R1R2NH2 in 70mol% MeCN(aq). The rate of anti-elimination was 36,000-fold faster than that of syn-elimination. The change of the βaryl group from Ph to thienyl to furyl sh...

The title compound, C(13)H(9)ClO(2), adopts an E configuration with respect to the C=C double bond of the propenone unit. The benzene and furyl rings are twisted slightly from each other, making a dihedral angle of 6.47 (7)°. Intra-molecular C-H⋯O and C-H⋯Cl hydrogen bonds generate an S(5)S(5)S(5) ring motif. In the crystal structure, mol-ecules are stacked along the b axis and weak inter-molec...

In the title mol-ecule, C(25)H(19)NO(2), the furyl ring is twisted by 46.3 (1)° with respect to the phenyl-ene ring bearing the amido group. In the stilbene unit, the two phenyl-ene rings (i.e. the rings connected through the -CH=CH- fragment) are twisted by 59.2 (1)°; in the biphenyl-ene unit, the two benzene rings are twisted by 35.5 (1)°. In the crystal structure, mol-ecules are linked by an...

Fluorescence properties of meso-tetrafurylporphyrins with N4, N3S and N2S2 porphyrin cores are studied by both steady-state and time-resolved fluorescence techniques and compared with the corresponding meso-tetraarylporphyrins. The study shows that the replacement of six-membered aryl groups with five-membered furyl groups at meso-positions alter the fluorescence properties considerably, as ref...