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Reaction kinetics of phenyl glycidyl ether with 2,5-dimethyl-2,5-hexanediamine

Conference ·
OSTI ID:5598491
The reaction rate of phenyl glycidyl ether with the amine 2,5-dimethyl-2,5-hexanediamine has been measured in dimethyl sulfoxide solution at four temperatures from 46 to 100/sup 0/C. Carbon-13 NMR was used to monitor the concentrations of reactants and products. Using this technique we were able to measure independently the reaction rates of both the primary and secondary amine hydrogens. The ratio of reaction rates k/sub 1//k/sub 2/ is 60:1, the largest ratio ever reported. The activation energy for either reaction is 13.7 kcal/mole. The reactions are catalyzed by hydroxyl groups, and the mechanism used to explain our data is consistent with those of previous workers. 7 figures.
Research Organization:
California Univ., Livermore (USA). Lawrence Livermore Lab.
DOE Contract Number:
W-7405-ENG-48
OSTI ID:
5598491
Report Number(s):
UCRL-82863; CONF-800514-1
Country of Publication:
United States
Language:
English