The crystal structures of two cocrystals composed of 4,40( ̄uorene-9,9-diyl)diphenol (C25H18O2) and 6-methyl-2H-pyridone (C6H7NO) are reported, namely 4,4 0-( ̄uorene-9,9diyl)diphenol±6-methyl-2H-pyridone (1/2), C25H18O2 2C6H7NO, (I), and 4,40-( ̄uorene-9,9-diyl)diphenol±6-methyl-2Hpyridone±water (1/3/3), C25H18O2 3C6H7NO 3H2O, (II). In both cocrystals, the mutual orientation between two 6-methyl2...

The dimerization of acetoacetamide easily proceeds at room temperature in a dimethyl sulfoxide solution to afford 5-carbamoyl-4,6-dimethyl-2-pyridone.

2,6-Bis(2-quinolyl)-4(1H)-pyridone 1, a novel quinoline analogue of the well-known ligand 2-terpyridone, shows unusual fluorescence with a large Stokes shift and low energy emission. Pyridine-pyridone tautomerism is investigated by NMR and theoretical methods and indicates that the low energy emission is from the pyridine form. 1 reacts with Ag(i) salts to give a double helical Ag2N6 core showi...

The crystal structures of the 1:2 compounds of chloranilic acid (systematic name: 2,5-di-chloro-3,6-dihy-droxy-1,4-benzo-quinone) with 2-pyridone, 3-hy-droxy-pyridine and 4-hyroxypyridine, namely, bis-(2-pyridone) chloranilic acid, 2C5H5NO·C6H2Cl2O4, (I), bis-(3-hy-droxy-pyridinium) chloranilate, 2C5H6NO+·C6Cl2O42-, (II), and bis-(4-hy-droxy-pyridinium) chloranilate, 2C5H6NO+·C6Cl2O42-, (III), ...