Kinetics and Mechanism of the Aminolysis of O-Methyl S-Aryl Thiocarbonates in Acetonitrile
作者:Hyuck-Keun Oh
DOI:10.5012/bkcs.2011.32.5.1539
日期:2011.5.20
The aminolysis of O-methyl S-aryl thiocarbonates with benzylamines are studied in acetonitrile at -45.0. The () values are in the range 0.62-0.80 with a negative cross-interaction constant, = -0.42, which are interpreted to indicate a concerted mechanism. The kinetic isotope effects involving deuterated benzylamine nucleophiles () are large, = 1.29-1.75, suggesting that the N-H(D) bond is partially