88017-81-6

Basic information

• Product Name: rac-1,2-Bis-(4-methoxyphenyl)-1,2-dibromodiphosphane
• CAS NO: 88017-81-6
• Molecular Weight: 436.019
• Mol File: 88017-81-6.mol

Chemical Properties

• CAS DataBase Reference: rac-1,2-Bis-(4-methoxyphenyl)-1,2-dibromodiphosphane(CAS DataBase Reference)
• NIST Chemistry Reference: rac-1,2-Bis-(4-methoxyphenyl)-1,2-dibromodiphosphane(88017-81-6)
• EPA Substance Registry System: rac-1,2-Bis-(4-methoxyphenyl)-1,2-dibromodiphosphane(88017-81-6)

Safety Data

• Hazardous Substances Data: 88017-81-6(Hazardous Substances Data)

Upstream product

• 86153-21-1 4-Methoxy-phenyldibromphosphan 

Downstream Products

• 88478-92-6 (CO)5Cr(4-CH₃OC₆H₄)(Br)PP(Br)(C₆H₄OCH₃-4)Cr(CO)5 

Relevant articles and documents

On Organophosphorus Compounds, XXII. 1,2-Diaryl-1,2-dibromodiphosphanes

1,2-Diaryl-1,2-dibromodiphosphanes R(Br)P-P(Br)R 2 (R = C6H5; 4-XC6H4, X = CH3O, F, Cl) were prepared by dehalogenation of RPBr2 with magnesium in a one-batch procedure.While solid 2 presumably consists of only one diastereomer there exists an equilibrium between meso-2, rac-2 and their disproportionation products RPBr2 and (RP)5 in solutions of 2.The influence of temperature, R and solvent on this equilibrium was investigated. - The reaction products of the dissolved phenyl compound 2a correspond to a reaction of its disproportionation products PhPBr2 and (PhP)5, the former preferably reacting on nucleophilic substitution, the latter with electrophilic agents.Under heterogenous conditions diphosphanes Ph(R)P-P(R)Ph can be obtained from 2a and LiR.