"One-pot" Synthesis of Triaryl Phosphates a Reaction Calorimetry Approach
Triaryl phosphates were obtained in yields ranging from 85-96percent in a "one-pot" synthesis via an alkaline route: an ethanolic solution of sodium hydroxide was added to a solution of substituted phenol in toluene.The mixture was distilled until all ethanol was removed.Phosphorus oxychloride was then added and the toluene was distilled.The triaryl phosphates were characterized by NMR (1H and 31P), MS and FTIR.The heat capacity (Cp), the total heat transfer coefficient (U) and the reaction enthalpy (ΔH) were determined for the synthesis of tris(4-chloro-3-methylphenyl), tris(p-cresyl), tris(o-methoxyphenyl) and tris(p-nitrophenyl) phosphates. - Keywords: Phosphate; NMR spectra; heat capacity; phosphorus oxychloride
Silva, J. F. Cajaiba da,Nakayama, H. T.,Neto, C. Costa
p. 71 - 82
(2007/10/03)
Synthesis of Some New Aryl Phosphates
Eight new triaryl phosphates (1-8) were synthesized by phosphorylation of the corresponding phenol with phosphorus oxychloride for evaluation as stationary phases in gas chromatography.They were duly characterized by infrared, proton magnetic resonance, and mass spectral techniques after their purity was established by HPLC.
Bhagat, Shib D.,Mathur, Raj K.
p. 131 - 133
(2007/10/02)
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