2071-21-8

Basic information

• Product Name: Phosphine oxide, methylenebis[diphenyl-
• Synonyms: 1,1,3,3-tetraphenyl-1,3-diphosphapropane dioxide
• CAS NO: 2071-21-8
• Molecular Formula: C25H22O2P2
• Molecular Weight: 416.396
• Mol File: 2071-21-8.mol
• Article Data: 27

Chemical Properties

• Melting Point: 181-182 °C
• Boiling Point: 537.0±33.0 °C(Predicted)
• Density: 1.23±0.1 g/cm3(Predicted)
• CAS DataBase Reference: Phosphine oxide, methylenebis[diphenyl-(CAS DataBase Reference)
• NIST Chemistry Reference: Phosphine oxide, methylenebis[diphenyl-(2071-21-8)
• EPA Substance Registry System: Phosphine oxide, methylenebis[diphenyl-(2071-21-8)

Safety Data

• Hazardous Substances Data: 2071-21-8(Hazardous Substances Data)

Upstream product

• 110-89-4 piperidine 
• 17391-60-5 Diazomethylenbis(diphenylphosphanoxid) 
• 124-38-9 carbon dioxide 
• 33535-76-1 bis(p-tolyl-imino-diphenylphosphoranyl)methane 
• 1806-49-1 diphenyl(chloromethyl)phosphine oxide 
• 66128-13-0 trimethylsilyldiphenylphosphine oxide 
• 23176-18-3 bis(diphenylphosphino)methane monooxide 
• 100-52-7 benzaldehyde 
• 57-13-6 urea 
• 2071-20-7 bis-diphenylphosphinomethane 
• 75-11-6 diiodomethane 
• 4559-70-0 Diphenylphosphine oxide 
• 75-09-2 dichloromethane 
• 74-95-3 1,1-dibromomethane 

Downstream Products

• 284668-99-1 [cis-Re2(μ-O2CCH3)2Cl4(μ-methylenebis(diphenylphosphine oxide))] 
• 83347-11-9 (1,1-methylenebis(diphenylphosphine oxide))trichloroiron(III) 
• 88446-18-8 Fe(((C₆H₅)2P(O))2CH₂)2Cl₂⁽¹⁺⁾*FeCl₄^(1-)=Fe(((C₆H₅)2P(O))2CH₂)2Cl₂FeCl₄ 
• 78610-30-7 PtCl₂(P(C₄H₉)3)(CH(P(C₆H₅)2O)2Li) 
• 148851-56-3 europium(tetraphenylmethylenediphosphine dioxide) chloride 

Relevant articles and documents

Di(hydroperoxy)alkane Adducts of Phosphine Oxides: Safe, Solid, Stoichiometric, and Soluble Oxidizing Agents

The di(hydroperoxy)alkane adducts of phosphine oxides 1–9, Ph3PO?(HOO)2CMe2, Cy3PO?(HOO)2CMe2, Ph3PO? (HOO)2CMeEt, Cy3PO?(HOO)2CMeEt, Cy3PO?(HOO)2CEt2, Cy3PO? (HOO)2C(CH2)5, Cy3PO?(HOO)2CMePh, (Ph2P(O)CH2CH2P(O)Ph2)? ((HOO)2CEt2)2, and Ph2P(O)CH2P(O)Ph2?(HOO)2CMe2, respectively, are synthesized and fully characterized by 1H, 13C, and 31P NMR, and IR spectroscopies. Single crystal X-ray structures are reported for 3–9. Different one-pot synthetic pathways, starting from R3P, R3PO, R3PO?H2O, and R3PO?H2O2 are explored and discussed and a mechanism for the formation of the di(hydroperoxy)alkane adducts of phosphine oxides is suggested. The longevity of the adducts is tested by monitoring the oxidation of Ph3P with quantitative NMR. The solubilities of the adducts in organic solvents are presented, and their applicability as stoichiometric oxidizing agents for the selective oxidation of sulfides to sulfoxides is reported.

Synthesis, structure and optical features of single adamantanoid Hg-SePh-X anionic clusters stabilized by octahedral complexes (Ph = phenyl; X = Cl, Br, I)

The ligand dppmo2 [CH2{P(O)Ph2} 2] (Ph = phenyl), MgCl2·6H2O, MgBr 2, MgI2, FeBr2, CoBr2, NiBr 2 and Hg(SePh)2 react one at

Reaction of (2-methoxyprop-2-yl)diphenylphosphine oxide with alkyl bromides

Treatment of (2-methoxyprop-2-yl)diphenylphosphine oxide with alkyl bromides affords alkyl(diphenyl)phosphine oxides in good yields.

The development of a new approach toward lanthanide-based OLED fabrication: new host materials for Tb-based emitters

To develop the recently proposed approach toward host selection for lanthanide-based emitters, four phosphine oxides PO = PO1-PO4 were investigated which are able to both increase the electron mobility and to sensitize terbium luminescence. New highly sol