2253-54-5Relevant academic research and scientific papers
Microwave irradiation technique for synthesis of dialkyl dithiophosphoric acids
Guemguem, Bahattin,Biricik, Nermin,Baysal, Akin
, p. 2507 - 2512 (2007/10/03)
Microwave heating technique was applied to the preparation of dialkyl dithiophosphoric acids from the reaction of alcohol with phosphorus pentasulphide. A microwave oven (CEM-MDS 2000) was utilized to determine the preparation conditions for the best yield of dialkyl dithiophosphoric acids under atmospheric pressure at various times and power. Six different (C4-C9) chain-length of dialkyl dithiophosphoric acids were studied. All experiments were performed in an open Teflon (poly-tetrafluoroethylene) vessel. The results obtained showed that the reaction of dialkyl dithiophosphoric acids can be achieved more rapidly using microwave heating than using conventional procedures.
REDOX REACTIONS OF ANTIMONY(III) O,O-DISUBSTITUTED PHOSPHORODITHIOATES WITH FERRIC CHLORIDE
Woo, Edward J.,Kalbacher, Barbara J.,McEwen, William E.
, p. 269 - 278 (2007/10/02)
The reaction of antimony(III) tris-(O,O-diethylphosphorodithioate) with three equivalents of ferric chloride in ether solution has been found to give ferrous chloride, bis-(O,O-diethylthiophosphoryl) disulfide and dichloroantimony O,O-diethyl phosphorodithioate as the major products.However, a relatively low yield of bis-(O,O-diethylthiophosphoryl) trisulfide was also obtained.The structures of these products were established by independent syntheses.Several additional antimony(III) tris-(O,O-disubstituted phosphorodithioates) were prepared, and the major organic product obtained by reaction of each of these compounds with three equiva lents of ferric chloride was the corresponding bis-(O,O-disubstituted thiophosphoryl) disulfide.A mechanism for this reaction has been suggested, and evidence in support of the mechanism has been presented.The various antimony(III) tris-(O,O-dialkyl phosphorodithioates) are passivating agents in petroleum refining.The results reported in this and in our previous papers indicate that such compounds undergo a variety of reactions with components of crude petroleum prior to the ultimate pyrolysis reactions which occur in the fluid catalytic cracking process.
