【摘 要】
：
The title compound has been prepared. Using ~1H NMR. ~(13)C NMR and selected decoupling method, the compound is shown in the keto-form. DNMR method was used to
【出 处】
：
Acta Chimica Sinica(English Edition)
论文部分内容阅读
The title compound has been prepared. Using ~1H NMR. ~(13)C NMR and selected decoupling method, the compound is shown in the keto-form. DNMR method was used to investigatedthe exchange between NH in the title compound and water in DMSO-d_6. The rate process was cal-culated by complete line shape analysis method and activation parameters △H,△G and △Swere found to be 8.4±0.5 kcalmol~(-1),16.9±0.2 kcalmol~(-1) and -26.9±1.5 calmol~(-1) k~(-1) respec-tively.
The title compound has been prepared. Using ~ 1H NMR. ~ (13) C NMR and selected decoupling method, the compound is shown in the keto-form. DNMR method was used to investigate the exchange between NH in the title compound and water in DMSO -d_6. The rate process was cal-culated by the complete line shape analysis method and activation parameters ΔH, ΔG and Δ Swere found to be 8.4 ± 0.5 kcalmol -1, 16.9 ± 0.2 kcalmol -1 and -26.9 ± 1.5 calmol ~ (-1) k ~ (-1) respec-tively.
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