Phosphorus, Sulfur and Silicon and the Related Elements p. 191 - 199 (1997)
Update date:2022-07-30
Topics:
Alexiev, Alexi
Lachkova, Victoria
Petrov, Galin
The kinetics of the reaction between O,O-diethyl ester of 1-amino-1-methyl-ethane phosphonic acid and phenylisocyanate, producing diethyl ester of 1-methyl-1-(N-phenylcarbamoyl-amino)ethane phosphonic acid is studied by IR spectroscopy. It is established that the reaction is of second order. The probable scheme of the reaction mechanism is suggested. The rate constant k of the initial stage of the reaction is determined. It is established that the rate constant is increased at the advanced stage of the process. The observed enhancement is ascribed to the autocalalytic effect of the reaction product.
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