56372-47-5Relevant articles and documents
Ethylene Polymerization and Copolymerization with Polar Monomers by Cationic Phosphine Phosphonic Amide Palladium Complexes
Sui, Xuelin,Dai, Shengyu,Chen, Changle
, p. 5932 - 5937 (2015/10/12)
The synthesis, characterization, and olefin (co)polymerization studies of a series of palladium complexes bearing phosphine phosphonic amide ligands were investigated. In this ligand framework, substituents on three positions could be modulated independently, which distinguishes this class of ligand and provides a great deal of flexibilities and opportunities to tune the catalytic properties. The palladium complex with an o-MeO-Ph substituent on phosphine is one of the most active palladium catalysts in ethylene polymerization, with 1 order of magnitude higher activity than the corresponding classic phosphine-sulfonate palladium complex. Meanwhile, the polyethylene generated by this new palladium complex showed ca. 6 times higher molecular weight in comparison to that by the classic phosphine-sulfonate palladium complex. In ethylene/methyl acrylate copolymerization, the new palladium complex showed lower activity, generating copolymer with similar methyl acrylate incorporation and much higher molecular weight. The new palladium complex was also able to copolymerize ethylene with other polar monomers, including butyl vinyl ether and allyl acetate, making it one of the very few catalyst systems that can copolymerize ethylene with multiple industrially relevant polar monomers.
The reactivity of arylphosphorus acid amides under Birch reduction conditions
Stankevic, Marek,Wlodarczyk, Adam,Nieckarz, Damian
, p. 4351 - 4371 (2013/07/26)
Several classes of arylphosphorus acid amides have been tested in reactions with alkali metal solutions in liquid ammonia. The outcomes of such reactions depend on the structures of the starting materials. Generally, two processes-Birch reduction or cleavage of the P-aryl bond-can be operative. Diarylphosphinic amides tend to undergo double Birch reduction to afford bis(cyclohexadienyl)phosphinic amides. Copyright
Efficient amidation and esterification of phosphoric acid using Cl 3CCN/ Ph3P
Kasemsuknimit, Atthapol,Satyender, Apuri,Chavasiri, Warinthorn,Jang, Doo Ok
scheme or table, p. 3486 - 3488 (2012/01/13)
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