6964-36-9Relevant academic research and scientific papers
Palladium-catalyzed ortho-alkenylation of aryl hydrogen phosphates using a new mono-phosphoric acid directing group
Chan, Li Yan,Kim, Sunggak,Ryu, Taekyu,Lee, Phil Ho
supporting information, p. 4682 - 4684 (2013/06/04)
A highly efficient Pd-catalyzed ortho-alkenylation is reported using a mono-phosphoric acid-directing group for the first time. This phosphoric acid-directing group is successfully utilized for the synthesis of various alkenylated products and offers a new approach to transition-metal-catalyzed C-H activation. The Royal Society of Chemistry 2013.
Pd(II)-catalyzed ortho-arylation of aryl phosphates and aryl hydrogen phosphates with diaryliodonium triflates
Chan, Li Yan,Cheong, Lilian,Kim, Sunggak
supporting information, p. 2186 - 2189 (2013/06/05)
Functionalized biaryl compounds were successfully synthesized using phosphates as the ortho-directing group in the Pd(II)/Pd(IV) catalytic cycle.
Hydrogen phosphates: Self initiated organocatalysts for the controlled ring-opening polymerization of cyclic esters
Malik, Payal,Chakraborty, Debashis
, p. 32 - 41 (2013/07/19)
A series of arylhydrogenphosphates and aryldihydrogenphosphates was synthesized and characterized using spectroscopic methods and single crystal X-ray diffraction. These compounds were assessed as catalysts towards the ring-opening polymerization and proved to be potent organocatalysts for the ring-opening polymerization of cyclic esters. The bulk polymerizations were performed in the absence of external initiator. The polymerization proceeds in a controlled fashion which leads to well defined polyesters with narrow molecular weight distributions. In the post polymerization experiments, kinetics, mechanism and monomer concentration effects were investigated. The kinetic results have confirmed the pseudo-living character of the polymerizations and mechanistic studies suggest that the polymerization operates through a cationic mechanism.
Synthesis, characterization and thermal studies of cresol based polyphosphate esters
Antony, Rosy,Ravindran, Sumisha,Mary
, p. 701 - 703 (2012/10/29)
Polyphosphate esters were synthesized from cresol phosphorodichloridates and dihydric phenols by interfacial polycondensation using a phase transfer catalyst. The polymers were characterized by IR, 1H and 31P NMR spectroscopy and GPC. The thermal stability of the polymers was determined by thermogravimetry.
New phosphoroamidate compounds: Synthesis, structural characterization and studies on ZnCl2 assisted hydrolysis of the P-N bond
Malik, Payal,Chakraborty, Debashis,Ramkumar, Venkatachalam
experimental part, p. 2142 - 2148 (2011/01/08)
A variety of phosphorodiamidate compounds were synthesized from the corresponding phosphorodichloridate intermediates and phosphorus oxychloride. These were completely characterized using different spectroscopic methods and single crystal X-ray diffraction studies on one of them. Studies revealed that water in the presence of a mild Lewis acid like ZnCl2 was found to assist the hydrolysis of the P-N linkage. The proof of this concept was effectively realized through the hydrolysis of hexamethylphosphoramide.
Syntheses and spectral characterization of 2-aryloxy - 5,5′- bis(bromomethyl)-1,3,2P-dioxaphosphorinane 2-oxides
Stephen Babu,Anasuyamma,Venugopal,Naga Raju,Suresh Reddy
, p. 1248 - 1251 (2007/10/03)
2-Aryloxy-5,5′-bis(bromomethyl)-1,3,2-dioxaphosphorinane 2-oxides 3 have been synthesized by the reaction of 2,2′-bis(bromomethyl)-1,3- propanediol 1 with various arvlphosphorodichloridates 2a-h in the presence of triethylamine in dry tetrahydrofuran at room temperatuure. Their 1H, 13C, 31P NMR and mass spectral data are discussed.
