Some aspects of quantum-chemical study of the mercuriation of organophosphorus compounds

Quantum-chemical investigation of possible intermediate steps in the mercuriation of arylphosphines was performed. Effect of the anion nature on the facility of ylide formation from arylphosphonium salts, the limiting step of the mercuriation, is considered.     

A New Route to Mercury-Containing Triphenylphosphonium Salts with Electron-Withdrawing Groups at the P Atom and Some Transformations of These Compounds

(Aroylmethyl)triphenylphosphonium salts react with mercury(II) trifluoroacetate with replacement of the labile methylene hydrogen atom by the HgOCOCF₃ group to give mercury-containing triphenylphosphonium salts in quantitative yields. Treatment of the mercurated salts with potassium carbonate yields mercury-containing triphenylphosphonium ylides of symmetrical and unsymmetrical structures, which enter Wittig reaction with aromatic aldehydes to form the corresponding mercurated olefins (Z isomers) and triphenylphosphine oxide.     

Magnetic methods of purification control of nanodiamond powders

Magnetic methods of quantitative determination of impurities in nanodiamond powders (NDPs) are discussed. For two types of NDPs, it is shown that the magnetic susceptibility depends on their treatment.     

Mercuration of Benzyltriphenylphosphonium Chloride with Mercury(II) Acetate and Trifluoroacetate and Some Transformations of the Products

Russian Journal of Organic Chemistry -