Accession Number : AD0617503

Title :   THE DECOMPOSITION OF 2-METHYL-DELTA 2OXAZOLINE IN AQUEOUS SOLUTION,

Corporate Author : DEFENCE CHEMICAL BIOLOGICAL AND RADIATION LABS OTTAWA (ONTARIO)

Personal Author(s) : Greenhalgh,R. ; Heggie,R. M. ; Weinberger,M. A.

Report Date : 03 JAN 1963

Pagination or Media Count : 11

Abstract : Nuclear magnetic resonance was to follow the decomposition of aqueous solutions of 2-methyl-delta 2-oxazoline (0.29 M) at constant pH values in the range - 1 to 14. The decomposition is first order with respect to total oxazoline at any specific pH, but deviates from the simple reaction of water with the protonated species above pH 5. At neutral pH values this is shown to be partially due to a second reaction involving 2-methyl-delta 2-oxazoline and O-acetylethanolamine which yields N-2-acetoxyethyl N'2-hydroxyethyl acetamidate. The decrease in rate constant at pH < 2 is accounted for by variation in the water concentration, which is related to the acidity function. A kinetic expression is derived for the decomposition over the whole pH range studied. The decomposition of the amidate is also discussed.

Descriptors :   (*OXYGEN HETEROCYCLIC COMPOUNDS, DECOMPOSITION), (*NITROGEN HETEROCYCLIC COMPOUNDS, DECOMPOSITION), SOLUTIONS(MIXTURES), PH FACTOR, NUCLEAR MAGNETIC RESONANCE, REACTION KINETICS, WATER, AMIDES, ESTERS, ALCOHOLS, CANADA

Distribution Statement : APPROVED FOR PUBLIC RELEASE