作者:Esko Taskinen
DOI:10.1002/(sici)1097-458x(199702)35:2<107::aid-omr26>3.0.co;2-y
日期:1997.2
The 17O NMR spectra of a number of alkyl‐ and phenyl‐substituted divinyl ethers were recorded in CDCl3 solution. The relationship between chemical shift and the number, nature and position of substituents was explored. The shift values, falling in the range δ 100–140 ppm, were found to be remarkably insensitive to the electronic and stereochemical effects of substituents. The narrow range of chemical
许多烷基和苯基取代的二乙烯基醚的 17O NMR 谱是在 CDCl3 溶液中记录的。探索了化学位移与取代基的数量、性质和位置之间的关系。发现落在 δ 100-140 ppm 范围内的位移值对取代基的电子和立体化学效应非常不敏感。窄范围的化学位移可能源于二乙烯基醚的 O 原子与两个烯键共享 p-π 共轭的能力:与一个乙烯基的共轭减少可能导致与另一个的共轭增强。© 1997 John Wiley & Sons, Ltd.