50289-57-1Relevant academic research and scientific papers
Functionalised phosphonate ester supported lanthanide (Ln = La, Nd, Dy, Er) complexes
Koehne, Ingo,Lik, Artur,Gerstel, Miriam,Bruhn, Clemens,Reithmaier, Johann Peter,Benyoucef, Mohamed,Pietschnig, Rudolf
supporting information, p. 16683 - 16692 (2020/12/18)
A series of phosphonate ester supported lanthanide complexes bearing functionalities for subsequent immobilisation on semiconductor surfaces are prepared. Six phosphonate ester ligands (L1-L6) with varying aromatic residues are synthesised. Subsequent com
Synthesis of aryl and arylmethyl phosphonates by cross-coupling of aryl or arylmethyl halides (X = I, Br and Cl) with diisopropyl H-phosphonate
Xu, Kai,Hu, Hao,Yang, Fan,Wu, Yangjie
supporting information, p. 319 - 325 (2013/02/25)
An efficient and generally applicable protocol for the palladacycle- catalysed arylation or K2CO3-promoted arylmethylation of diisopropyl H-phosphonate has been developed. The remarkable features of the palladacycle-catalysed arylation reaction include wide substrate scope (aryl iodides, bromides and chlorides), significant shortening of the reaction time (2 or 3 h) and a low catalyst loading of 1 mol-%. Note that with the base K 2CO3 as promoter, arylmethylation could be achieved without any palladium catalyst. Moreover, the first example of a palladium-catalysed phosphonation of inactive electron-rich aryl chlorides with tBuOK as the base has been realized. This result could be considered an important improvement and complement to earlier work of Montchamp and Han, whose catalytic systems are typically compatible with electron-deficient and electron-neutral aryl chlorides.
Reactivity of the acids of trivalent phosphorus and their derivatives. Part VI. The reaction of the >P-O- anions with benzyl bromides para-substituted in the phenyl ring
Witt, Dariusz,Rachon, Janusz
, p. 169 - 187 (2007/10/03)
The reaction of p-substituted benzyl bromides with the >P-O- ions in THF, alcohols and toluene as the solvents is described. According to the reduction potential of the p-substituted benzyl bromides and the solvent used the formation of the P-C bond, debromination and/or dimerization occur. The principal process is believed to be X-philic substitution, the dimers are formed through a secondary process via SET from the p-substituted benzyl anions into the p-substituted benzyl bromides.
