Kinetics and Mechanism of the Benzylaminolysis of O, O-Diphenyl S-Aryl Phosphorothioates in Dimethyl Sulfoxide

KK Adhikary, HW Lee

Index: Adhikary, Keshab Kumar; Lee, Hai Whang Bulletin of the Korean Chemical Society, 2011 , vol. 32, # 5 p. 1625 - 1629

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Citation Number: 15

Abstract

Abstract Kinetic studies of the reactions of O, O-diphenyl ZS-aryl phosphorothioates with X- benzylamines have been carried out in dimethyl sulfoxide at 55.0. The Hammett (log vs) and Bronsted [log vs] plots for substituent X variations in the nucleophiles are biphasic concave downwards with a maximum point at X= H, and the unusual positive and negative values are obtained for the strongly basic benzylamines. The sign of the cross-interaction constant () ...