766-04-1Relevant articles and documents
Phosphorus-Containing Block Copolymers from the Sequential Living Anionic Copolymerization of a Phosphaalkene with Methyl Methacrylate
Chen, Leixing,Rawe, Benjamin W.,Adachi, Kaoru,Gates, Derek P.
, p. 18012 - 18019 (2018)
Although living polymerization methods are widely applicable to organic monomers, their application to inorganic monomers is rare. For the first time, we show that the living poly(methylenephosphine) (PMPn?) anion can function as a m
Isomerization polymerization of the phosphaalkene MesP=CPh2: An alternative microstructure for poly(methylenephosphine)s
Siu, Paul W.,Serin, Spencer C.,Krummenacher, Ivo,Hey, Thomas W.,Gates, Derek P.
supporting information, p. 6967 - 6970 (2013/07/26)
Unique pathway: The radical-initiated addition polymerization of MesP=CPh2 propagates through the ortho-bound CH3 group of the Mes moiety after C-H bond activation (see scheme, Mes=2,4,6-trimethylphenyl, tht=tetrahydrothiophene, TEMPO=2,2,6,6-tetramethyl-l-piperidinoxyl). This unique isomerization polymerization mechanism contrasts the previously suggested head-to-tail enchainment typically observed for olefins. Copyright
Production of benzyllithium, benzylsodium, and polyphenylene paradimethylene
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Page/Page column 1, (2008/06/13)
A process for producing benzyllithium, benzylsodium and polyphenylene paradimethylene and analogs comprising dissolving toluene in an aprotic polar solvent in which toluene is more acidic than water, such as DMSO, under an inert atmosphere, such as argon, adding an alkali metal hydroxide, such as lithium or sodium hydroxide, to form the alkali metal anion of the benzyl cation and water then removing the solvent and water to obtain the solid alkali metal alpha-carbon toluene compound, which is best stored under hexane. This process also relating to toluene analogs such as parachloro toluene which thereby yields parachloro alkali metal alpha-carbon toluene which is then polymerized by heating with a suitable high-boiling solvent, such as dibutyl ether or dimethoxy ethane in the presence of a copper catalyst, such as copper sulfate or finely divided copper metal at approximately 170C for 5 hours to form polyphenylene paradimethylene. This process having the advantage of using alkali metal hydroxides instead of elemental alkali metals, a reaction occurring at ordinary temperatures, and a lower cost of the product. This process also allowing the economical production of polyphenylene paradimethylene which is not currently being manufactured.