27286-19-7

Basic information

• Product Name: Phosphine, bis(1,1-dimethylethyl)(phenylmethyl)-
• Synonyms: benzyl(di-tert-butyl)phosphine;Phosphine,bis(1,1-dimethylethyl)(phenylmethyl);di-tert-butylbenzylphosphine;benzyl-di-tert-butyl-phosphane
• CAS NO: 27286-19-7
• Molecular Formula: C15H25P
• Molecular Weight: 236.337
• Mol File: 27286-19-7.mol
• Article Data: 7

Chemical Properties

• Boiling Point: 56-59 °C(Press: 0.1 Torr)
• CAS DataBase Reference: Phosphine, bis(1,1-dimethylethyl)(phenylmethyl)-(CAS DataBase Reference)
• NIST Chemistry Reference: Phosphine, bis(1,1-dimethylethyl)(phenylmethyl)-(27286-19-7)
• EPA Substance Registry System: Phosphine, bis(1,1-dimethylethyl)(phenylmethyl)-(27286-19-7)

Safety Data

• Hazardous Substances Data: 27286-19-7(Hazardous Substances Data)

Upstream product

• 13716-10-4 di(tert-butyl)chlorophosphine 
• 6921-34-2 benzylmagnesium chloride 
• 100-39-0 benzyl bromide 
• 819-19-2 di-tert-butylphosphine 
• 766-04-1 benzyllithium 

Downstream Products

• 27286-03-9 Benzyl-t-butylphosphonige-saeure 

Relevant articles and documents

Aromatic vs aliphatic C-H bond activation by rhodium(I) as a function of agostic interactions: Catalytic H/D exchange between olefins and methanol or water

The aryl-PC type ligand 3, benzyl(di-tert-butyl)phosphane, reacts with [Rh(coe)2(solv)n]BF4 (coe = cyclooctene, solv = solvent), producing the C-H activated complexes 4a-c (solv = (a) acetone, (b) THF, (c) methanol). Complexes 4a-c undergo reversible arene C-H activation (observed by NMR spin saturation transfer experiments, SST) and H/D exchange into the hydride and aryl ortho-H with ROD (R = D, Me). They also promote catalytic H/D exchange into the vinylic C-H bond of olefins, with deuterated methanol or water utilized as D-donors. Unexpectedly, complex 2, based on the benzyl-PC type ligand 1 (analogous to 3), di-tert-butyl(2,4,6-trimethylbenzyl)phosphane, shows a very different reversible C-H activation pattern as observed by SST. It is not active in H/D exchange with ROD and in catalytic H/D exchange with olefins. To clarify our observations regarding C-H activation/reductive elimination in both PC-Rh systems, density functional theory (DFT) calculations were performed. Both nucleophilic (oxidative addition) and electrophilic (H/D exchange) C-H activation proceed through η2-C,H agostic intermediates. In the aryl-PC system the agostic interaction causes C-H bond acidity sufficient for the H/D exchange with water or methanol, which is not the case in the benzyl PC-Rh system. In the latter system the C-H coordination pattern of the methyl controls the reversible C-H oxidative addition leading to energetically different C-H activation processes, in accordance with the experimental observations.

Electroluminescent iridium compounds with silylated, germanylated, and stannylated ligands, and devices made with such compounds

The present invention is directed to electroluminescent complexes of iridium(III) with silylated, germanylated and stannylated ligands. The invention is further directed to electronic devices in which the active layer includes an electroluminescent Ir(III

Novel catalysts useful for catalyzing the coupling of arylhalides with arylboronic acids

The present invention relates to a new method of cross-coupling aryl moieties comprising reacting an arylhalide with an arylboronic acid in the presence of a palladium compound and a compound comprising a di-alkylphosphine moiety.