both reactions were calculated on the basis of the kobs and K. The corresponding deuterium kinetic isotope effects (e.g., KIEODH = kH(i-PrOH)/kH(i-PrOD) and KIEβ-D6H = kobs(i-PrOH)/kobs((CD3)2CHOH)), as well as the activation parameters, were derived. For the reaction of PhXn+ (62 °C) and MA+ (67 °C), primary KIEα-DH (4.4 and 2.1, respectively) as well as secondary KIEODH (1.07 and 1.18) and KIEβ-D6H
从
异丙醇(i -PrOH)到两个
NAD +类似物9-苯基x
蒽离子(PhXn +)和10-甲基ac离子(MA +)的
氢化物转移反应的拟一阶速率常数(k
OBS),在i- PrOH中在49至82°C的温度范围内测定,其中i- PrOH包含各种数量的AN或
水。观察到醇-阳离子醚加合物(ROPr- i)的形成是侧平衡。确定了在i- PrOH / AN中vXn +转化为PhXnOPr- i的平衡常数(v / v = 1),并且平衡了同位素效应(EIE = K在62℃下的(i -PrOH)/ K(i- PrOD))经计算为2.67。两个反应的
氢化物转移步骤的k H是根据k
OBS和K计算的。相应的
氘动力学同位素效应(例如,KIE OD ħ = ķ ħ(我的i-PrOH)/ ķ ħ(我-PrOD)和KIE β-D6 ħ = ķ
OBS(异PrOH中)/ ķ
OBS((CD 3)2个(CHOH)),以及活