133359-29-2

Basic information

• Product Name: methylenebis(di-p-tolylphosphine) monoxide
• CAS NO: 133359-29-2
• Molecular Weight: 456.504
• Mol File: 133359-29-2.mol
• Article Data: 1

Chemical Properties

• CAS DataBase Reference: methylenebis(di-p-tolylphosphine) monoxide(CAS DataBase Reference)
• NIST Chemistry Reference: methylenebis(di-p-tolylphosphine) monoxide(133359-29-2)
• EPA Substance Registry System: methylenebis(di-p-tolylphosphine) monoxide(133359-29-2)

Safety Data

• Hazardous Substances Data: 133359-29-2(Hazardous Substances Data)

Upstream product

• 64-18-6 formic acid 
• 1017-60-3 di-p-tolylphosphine 

Downstream Products

• 215815-03-5 bis[(di(p-tolyl)phosphino)methane-monoxide-κ(2)-P,O](chloro)(methyl)palladium(II) 
• 215814-88-3 (η(3)-allyl)[bis(di-p-tolylphosphino)methane-monoxide-κ(1)-P](iodo)palladium(II) 
• 215814-98-5 (η(3)-allyl)[bis(di-p-tolylphosphino)methane-monoxide-κ(2)-P,O]palladium(II) tetrafluoroborate 

Relevant articles and documents

New method for synthesis of methylenebis(diarylphosphine) monoxides

Synthesis of methylenebis(diphenyl- and methylenebis(di-p-tolylphosphine) monoxides, via the reaction of diarylphosphines with formic acid in presence of concentrated hydrochloric acid is described. Methylenebis(diphenylphosphine) monoxide is oxidized with hydrogen peroxide and sulfur into the corresponding methylenebis(diphenylphosphine) dioxide and methylenebis(diphenylphosphine) monoxide monosulfide. Attempts to carry out this reaction with butylphenyl- and dibutylphosphines failed.