1997

Arkady Pudovik is one of the most remarkable representatives of Kazan Chemistry School, the disciple of academicians Alexander and BorisArbuzovs.He discovered a new addition reaction of hydrophosphoryl compounds and their thioanalogues to unsaturated reagents with homo- and heterodouble bonds. "Pudivik's Reaction" is the unique way for obtaining organophosphorus compounds with P-C bonds.
Arkady Pudovik made considerable contribution into the investigation of the reaction of trivalent phosphorus derivatives with electrophilic reagents a "nonclassical" version of the Arbuzov's reaction.This reaction allowed the synthesis of a wide range of different linear and cyclic organophosphorus compounds.
He revealed that vinylphophonic acid ethers add various nucleophilic reagents against the Rule of Markovnikov. This method of synthesis of B-functionalized alkylphosphonates was named "phosphonethylation reaction".
Arkady Pudovik successfully developed the chemistry of heterocyclic phosphorus derivatives. Original methods for synthesis of saturated and unsaturated phosphacyclanes were found.
For 55 yearsof his scientific activity he published about 1400 papers, 3 monographs and 20 surveys. Under his supervision more than 70 Ph.D. theses were defended and 20 his followers got Doctor's degrees.

Louis Quin is well known by his works in the field of the conformationalanalysis of phosphorus heterocycles, the synthesis and reactivity of low coordination phosphorus compounds, and the application of 31 P NMR spectroscopy for studying the dynamic stereochemistry of phosphorus compounds.
Prof. Quin laid the foundation for a new field of the phosphorus chemistry - the chemistry of heterocyclic phosphorus compounds.He has synthesized phospholenes, investigated their reactivity and stereochemistry and developed the methods of synthesis of polycyclic compounds. He has made considerable contribution into phosphole chemistry. He was the first discovered cis-trans isomerism in cyclic phosphines with a single chiralcenter - the atom of phosphorus, and then a new line of research was developed, including the investigation of isomerism and conformation analysis of 6-membered heterocycles.
He revealed that the introduction of oxygen into P-C bond results in the formation of thermally unstable products, which are converted into highly reactive phosphoryl compounds of Low coordination easily. He explained such effects as descreening by ß-atoms of carbon and screening by γ-atoms of carbon.