G. Bruno et al., THYL)]-1,3-DIPHENYL-4-(P-TOLYLMETHYL)PYRAZOL-5-ONE - PRODUCT OF A REDUCTIVE DIMERIZATION REACTION, Acta crystallographica. Section C, Crystal structure communications, 52, 1996, pp. 3129-3131
The title compound, lyl-methyl)-[4,4'-bipyrazolyl]-3,3'(2H,2'H)-dione,
C46H38N4O2, isolated in dl form by a diastereoselective reductive dim
erization of 4-arylmethylene-3-phenyl-pyrazol-5-one, is a dimeric comp
ound with approximate C-2 symmetry. It contains two chiral C atoms hav
ing the same configuration and related by the pseudo-twofold axis. The
crystal consists of a centrosymmetric crystal packing of both R,R and
S,S diastereomers.