21982-00-3

Basic information

• Product Name: Methyl-bis(trimethylsilylmethyl)phosphan
• CAS NO: 21982-00-3
• Molecular Weight: 220.442
• Mol File: 21982-00-3.mol
• Article Data: 1

Chemical Properties

• CAS DataBase Reference: Methyl-bis(trimethylsilylmethyl)phosphan(CAS DataBase Reference)
• NIST Chemistry Reference: Methyl-bis(trimethylsilylmethyl)phosphan(21982-00-3)
• EPA Substance Registry System: Methyl-bis(trimethylsilylmethyl)phosphan(21982-00-3)

Safety Data

• Hazardous Substances Data: 21982-00-3(Hazardous Substances Data)

Upstream product

• 38316-42-6 methylphosphonous acid diphenyl ester 
• 1822-00-0 trimethylsilylmethyllithium 

Relevant articles and documents

Functional Derivatives of Trimethylphosphane, XVII. Methyl-bis(dimethylphosphinomethyl)phosphane, (Me2PCH2)2PMe

(Me2PCH2)2PMe (3) is obtained from MePCl2 (2a) or MeP(OPh)2 (2b) and LiCH2PMe2 (1).The oxides 2PMe (4) and 2P(O)Me (5), are formed on the reaction with air.Quaternisation with MeI gives the salts I2 (6) and I3 (12).For comparison, also the isoelectronic (Me3SiCH2)2PMe (7), and (Me3SiCH2)2PtBu (8), are synthesized and transformed to their methylphosphonium salts 10 and 11.With CH2Br2 3 forms the six-membered heterocycle Br2 (13a), which could not be isolated in a pure state, however. 3 may be m etalated by LiBu: Li (15), is obtained, but a second metalation step could not be observed.The hydrolysis of 12 under unusual mild conditions (H2O or H2O/CH3OH) gives I (16), and I (17), as main products.Properties and NMR data of the new compounds are described. - Key words: Triphosphane (PCPCP), Phosphonium Salts, Hydrolysis, NMR Spectra