51470-91-8Relevant academic research and scientific papers
A simple straightforward synthesis of phenylphosphane and the photoinitiator bis(mesitoyl)phenylphosphane oxide (IRGACURE 819)
Gruetzmacher, Hansjoerg,Geier, Jens,Stein, Daniel,Ott, Timo,Schoenberg, Hartmut,Sommerlade, Reinhard H.,Boulmaaz, Souad,Wolf, Jean-Pierre,Murer, Peter,Ulrich, Thomas
, p. 18 - 22 (2008/09/19)
A straightforward high-yield synthesis for the photoinitiator bis(2,4,6-trimethylbenzoyl)phenylphosphane oxide (16, IRGACURE 819) involves: i) the reaction of phenyldichlorophosphane, PhPCl2, with sodium to give [Na2(P2Ph2)(tmeda)]6 (5); ii) protonation of 5 with tert-butanol to give 1,2-diphenyldiphosphane, PhHP-PHPh (12); iii) reduction of 12 by sodium to yield [Na(PHPh)x (13); iv) protonation of 13 with tert-butanol to give phenylphosphane PhPH2 (14) in excellent yields; v) reaction of 14 with 2,4,6-trimethylbenzoylchloride (MesCOCI) in presence of the NaOt-Bu formed in steps ii and iv to give bis(2,4,6-trimethylbenzoyl)phenylphosphane 7; vi) oxygenation of 7 with 30% aqueous hydrogen peroxide to give the final product 16. This reaction can be performed in toluene with about 4 vol-% of tmeda as an activator in a one-pot synthesis without changing the solvent. The structures determined by X-ray diffraction of the unique hexameric aggregate 5 and 16 are reported. Schweizerische Chemische Gesellschaft.
PROCESS FOR THE SYNTHESIS OF CYCLOORGANYLPHOSPHANES AND DI(ALKALI METAL/ALKALINE EARTH METAL) OLIGOPHOSPHANEDIIDES
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Page/Page column 13, (2008/06/13)
The invention relates to a process for the preparation of cycloorganylphosphanes of formula 1(R1P)n by reaction of dihalo(organyl)phosphanes of formula R1PHal2 with: a) activated zinc in an organic solvent, or w
