54100-46-8Relevant academic research and scientific papers
REACTION OF BIS-- AND BIS--DISULFIDES WITH TRIALKYLSILYLCYANIDES. NEW ROUTE TO DIALKYLPHOSPHORO- AND DIALKYLTHIOPHOSPHORO THIOCYANIDATES AND O,O,O,O-TETRAALKYLPYROPHOSPHOROTRITHIOATES
Lopusinski, Andrzej,Luczak, Lech,Brzezinska, Ewa
, p. 101 - 108 (2007/10/02)
The reaction of organophosphorus disulfides with trialkylsilylcyanide has been investigated.It provided direct evidence for the intermediacy of thiocyanidate >P(X)SCN, X=O, S in this type of reaction.The disulfides studied involved phosphoryl, phosphonyl and/or phosphinyl disulfides.They have been shown to follow the common mechanism.The studied reaction of thiophosphoryl disulfides with trimethylsilylcyanide represents a new and highly efficient route to tetraalkylpyrophosphorotrithioates.
Anhydrides of Phosphorus and Sulfur Acids, 2. Mixed Anhydrides of Phosphoric, Phosphonic, and Phosphinic Acids with Sulfonic Acids and Sulfuric Monoimidazolide. New Methods of Synthesis, Novel Structures, Phosphorylating Properties
Dabkowski, Wojciech,Michalski, Jan,Skrzypczynski, Zbigniew
, p. 1809 - 1824 (2007/10/02)
New applications of methods leading to anhydrides RR'P(O)OSO2R'' (1) are described: a) Reaction of acids RR'P(O)OH (2) with sulfonic imidazolides. b) Reaction of phosphorus imidazolides 4 with sulfonic acids and sulfonic anhydrides.New methods of synthesis of anhydrides 1 have been developed. c) Reaction of phosphorus acid silyl esters RR'P(O)OSiMe3 (9) with methanesulfonic and trifluoromethanesulfonic anhydrides. d) Reaction of bis(trimethylsilyl) tert-butylphosphonate (10) with methanesulfonic acid leading to tBuP(O)(OSO2Me)2 (11). e) Reaction of stannyl phosphate (EtO)2P(O)OSnMe3 (15) with methanesulfonic anhydride. f) Reaction of phosphorus acid silyl esters 9 with trimethylsilyl trifluoromethanesulfonate.All methods result in high yields and can be adapted to a variety of anhydrides 1 derived from phosphoric, phosphonic, and phosphinic acids on the one hand and methanesulfonic, trifluoromethanesulfonic acids and sulfuric monoimidazolide on the other.Phosphonium intermediates have been demonstrated by low temperature FT 31P NMR spectroscopy for reaction b) and c).The anhydrides 1 are readily converted into imidazolides 4 by the reaction with N-(trimethylsilyl)imidazole which proceeds via two distinct phosphonium intermediates.With neutral and weakly basic nucleophiles, the anhydrides 1 behave as phosphorylating agents.
STEREOCHEMISTRY OF THE ACYCLIC PHOSPHONO- AND PHOSPHINO-THIOCYANIDE ISOMERISATION INTO CORRESPONDING ISOTHIOCYANIDATES SYNTHESIS OF OPTICALLY ACTIVE THIOCYANIDATES >P(O)SCN ISOTHIOCYANIDATES >P(O)NCS, ISOCYANIDATES >P(O)NCO AND RELATED PHOSPHORYLATED DERI
Kopusinski, A.,Kuczak, L.,Michalski, J.,Kabachnik, M. M.,Moriyama, M.
, p. 2011 - 2020 (2007/10/02)
Optically active t-butylphenylphosphinothiocyanidate ButPhP(O)SCN 3 and t-butyl-O-methyl-phosphonothiocyanidate But(MeO)P(O)SCN 7 have been prepared by condensation of the corresponding sulphenyl chlorides >P(O)SCl with trimethylsily
