NMR studies of n-methyl derivatives of the 2-azabicyclo-[2.2.1]heptyl and -[2.2.2]octyl ring systems; kinetic protonation in determination of Invertomer preferences
作者:Djaballah Belkacemi、John R. Malpass
DOI:10.1016/s0040-4020(01)91227-x
日期:1993.1
were studied by 1H, 13C, and 15N NMR spectroscopy. Since inversion at nitrogen is rapid on the NMR time scale even at low temperatures, kinetic protonation was used to estimate invertomer ratios at ambient temperature. Invertomer preferences appear to be consistent with the operation of steric factors.
通过1 H,13 C和15 N NMR光谱研究标题化合物。由于即使在低温下,在NMR时间尺度上,氮气中的转化速度也很快,因此动力学质子化可用于估算环境温度下的转化体比率。Invertomer的偏爱似乎与空间因素的运作是一致的。