A palladium-catalyzed oxidative acylation of O-phenyl carbamates with a-oxocarboxylic acids via selective aromatic C H bond activation is described. This protocol represents the first ortho-acylation of phenol derivatives, and a catalytic amount of triflic acid additive is crucial for this transformation.

Flavones and chromanones are known to be biologically important compounds over 4000 chemically unique flavanoids have been identified in plant sources. These low-molecular-weight substances, found in all vascular plants, with an assortment of basic structure of phenyl benzopyrones (phenyl chromones). In the present work 2-hydroxy pyrimidine and 2-mercapto pyrimidine were prepared from phenol i....

In the title compound, C(18)H(22)N(4)O, the dihedral angle between the planes of the benzotriazol unit and the phenyl ring of the phen-oxy group is 6.4 (2)°. There is an intra-molecular O-H⋯N hydrogen bond between the phenol and benzotriazol groups.

Three new dinuclear lanthanide(III) complexes {Eu(hfac)(3)(H(2)O)}(2)(μ-HPhMq)(2) (2) and {Ln(hfac)(3)(H(2)O)}(2)(μ-HMe(2)NC(6)H(4)Mq)(2) (Ln = Eu, 3; Nd, 4) with 8-hydroxylquinoline derivatives in μ-phenol mode were synthesized and characterized, where hfac(-) = hexafluoroacetylacetonate, HPhMq = 2-methyl-5-phenylquinolin-8-ol, and HMe(2)C(6)H(4)Mq = 5-(4-(dimethylamino)phenyl)-2-methylquinoli...

A series of Azetidinone; 3-chloro-1-{4-[8-(2hydroxy-4-methylphenyl)-6,10-dimethyl-4,12-diphenyl2,4,5,11,12-pentaazatricyclo[7.3.0.0 3,7 ]dodeca-1(9), 3(7), 5,10tetraen-2-yl]phenyl}-4-aryl azetidin-2-one (3a-e) and thiazolidinones; 3-{4-[8-(2-hydroxy-4-methylphenyl)-6,10dimethyl-4,12-diphenyl-2,4,5,11,12pentaazatricyclo[7.3.0.0 3,7 ]dodeca-1(9), 3(7), 5,10-tetraen-2yl]phenyl}-2-aryl-1,3-thiazoli...

The photocatalytic degradation of phenol in aqueous suspensions of TiO2 under different salt concentrations in an annular reactor has been investigated. In all cases, complete removal of phenol and mineralization degrees above 90% were achieved. The reactor operational parameters were optimized and its hydrodynamics characterized in order to couple mass balance equations with kinetic ones. The ...

Phenol is added to acetophenone (methyl phenyl ketone) and six of its halogenated derivatives in a supersonic jet expansion determine the hydrogen bonding preference cold isolated 1:1 complexes by linear infrared spectroscopy. Halogenation found have pronounced effect on docking site this intermolecular ketone balance experiment. The spectra unambiguously decide between competing variants group...

The ortho-hydroxy aryl Schiff base 2-[(E)-(phenylimino)methyl]phenol and its deutero-derivative have been studied by the inelastic incoherent neutron scattering (IINS), infrared (IR) Raman experimental methods, as well Density Functional Theory (DFT) Density-Functional Perturbation (DFPT) simulations. assignments of vibrational modes within 3500–50 cm?1 spectral region made it possible to state...