3-(4-Biphenyl-1-yl)-3-hydr­oxy-1-phenyl­prop-2-en-1-one

In the title compound, C21H16O2, the six crystallographically independent mol­ecules (Z′ = 6) all exist in the enolized form. Strong intra­molecular hydrogen bonds are observed: one approximate H-atom-centered O⋯H⋯O hydrogen bond, two tautomeric forms O—H⋯O (three mol­ecules) and O⋯H—O (two mol­ecules). Only one weak inter­molecular C—H⋯O hydrogen bond between two neighboring mol­ecules is observed in the crystal structure. In addition, eight very weak non-conventional inter­molecular C—H⋯π hydrogen-bonding contacts between mol­ecules are observed

Bis(pyridine-κN)bis[4,4,4-trifluoro-1-(4-fluorophenyl)butane-1,3-dionato-κ2O,O′]cobalt(II)

In the structure of the title compound, [Co(C10H5F4O2)2(C5H5N)2], cobalt(II) forms a complex with two 4,4,4-trifluoro-1-(4-fluorophenyl)butane-1,3-dionate anions and two pyridine molecules in an octahedral coordination environment, where the two dionate ligands are in equatorial positions and the two pyridine molecules in axial positions. The complex is located on a crystallographic inversion centre

3-(4-tert-Butylphenyl)-1-(4-fluorophenyl)-3-hydroxyprop-2-en-1-one

The title molecule, C19H19FO2, exits in the enol form with a dihedral angle of 33.06 (8)° between the two benzene rings. The molecular conformation is stabilized in part by an intramolecular O—H...O hydrogen bond

Synthesis of Pyrido-Fused Quinazolinone Derivatives via Copper-Catalyzed Domino Reaction

A simple and efficient synthesis of 11<i>H</i>-pyrido­[2,1-<i>b</i>]­quinazolin-11-ones by Cu­(OAc)₂·H₂O-catalyzed reaction of easily available substituted isatins and 2-bromopyridine derivatives has been developed. The reaction involves C–N/C–C bond cleavage and two C–N bond formations in a one-pot operation. This methodology is complementary to previously reported synthetic procedures, and two plausible reaction mechanisms are discussed