RESUMEN
The title compound, C25H22NO2P, was synthesized in high yield by a three-component Kabachnik-Fields reaction of diphenylphosphine oxide, salicylaldehyde and aniline in dry toluene at room temperature. It precipitates as racemic crystals, in which strong hydrogen bonds between the hydroxy group and the P=O group of a neighbouring molecule form one-dimensional heterochiral chains along the crystallographic a axis, with an O···O separation of 2.568â (2)â Å. The pseudo-tetrahedral environment of the P atom is distorted, with O-P-C bond angles significantly larger than the C-P-C angles.
Asunto(s)
Compuestos de Anilina/química , Compuestos de Anilina/síntesis química , Cristalografía por Rayos X , Fenoles/química , Fenoles/síntesis química , Aldehídos/química , Enlace de Hidrógeno , Estructura Molecular , Fosfinas/químicaRESUMEN
The title compound, C(14)H(11)Cl(2)OP, was synthesized by the reaction of diphenyl-phosphine oxide with 1,2-dichloro-ethyne under CuI catalysis. The reaction provided the Z isomer regioselectively. Two O-P-C bond angles [114.3â (1) and 112.5â (1)°] are significantly larger than the C-P-C [107.7â (1), 105.6â (1) and 106.6â (1)°] and another O-P-C angle [109.5â (1)°], indicating significant distortion of the tetra-hedral configuration of the P atom. In the crystal, mol-ecules are linked by weak inter-molecular C-Hâ¯O hydrogen bonds into centrosymmetric dimers, which are connected by further C-Hâ¯O inter-actions into chains along [101].