50777-45-2

Basic information

• Product Name: Phosphine oxide, tris(4-ethylphenyl)-
• CAS NO: 50777-45-2
• Molecular Formula: C24H27OP
• Molecular Weight: 362.452
• Mol File: 50777-45-2.mol
• Article Data: 3

Chemical Properties

• CAS DataBase Reference: Phosphine oxide, tris(4-ethylphenyl)-(CAS DataBase Reference)
• NIST Chemistry Reference: Phosphine oxide, tris(4-ethylphenyl)-(50777-45-2)
• EPA Substance Registry System: Phosphine oxide, tris(4-ethylphenyl)-(50777-45-2)

Safety Data

• Hazardous Substances Data: 50777-45-2(Hazardous Substances Data)

Upstream product

• 1585-07-5 1-bromo-4-ethylbenzene 
• 50777-22-5 tris(p-ethylphenyl)phosphine 

Relevant articles and documents

Photooxidation of triarylphosphines under aerobic conditions in the presence of a gold(iii) complex on cellulose extracted from Carthamus tinctorius immobilized on nanofibrous phosphosilicate

Triarylphosphines were converted to the corresponding oxides via photooxidation as a novel method. In this study, cellulose was extracted from the Carthamus tinctorius plant and then oxidized by sodium metaperiodate. A gold complex was supported on this natural cellulose. Then, a gold complex on natural cellulose supported on FPS (FPS/Au(iii)) was synthesized for the reduction of phosphine oxides to corresponding phosphines with remarkable chemoselectivity. The morphology of FPS led to higher catalytic activity. FPS/Au(iii) NPs were thoroughly characterized using TEM, FESEM, FTIR, TGA, and BET.

Preparation and Properties of Tertiary p-Alkylarylphosphines containing Straight-chain Alkyl Groups

A series of tris(p-alkylaryl)phosphines with straight-chain alkyl groups, P(p-C6H4-CnH2n+1)3 where n=2-9, have been prepared by reaction of phosphorus trichloride with the Grignard reagent derived from the corresponding p-bromoalkylbenzene.When n=2 and 3 the phosphines are crystalline solids, but for n>3 they are viscous oils up to n=9, which is a waxy solid.The phosphines have been characterised by microanalysis, and i.r., 1H and 31P n.m.r., and mass spectrometry.The p-substituted-arylphosphines are more sensitive than triphenylphosphine to air; aerial oxidation converts them exclusively into the corresponding phosphine oxides, in contrast to trialkylphosphines which are oxidised to a complex mixture of products.The complexing ability of the new phosphines (PAr3) is demonstrated by their ready displacement of 1,5-cyclo-octadiene (cod) from (M=Pd and Pt) to yield trans- and cis-, respectively.