Unusually strong temperature dependence of 13C chemical shifts and degenerate conformational exchange in cyclobutenyl carbocations
作者:Georgii E. Salnikov、Alexander M. Genaev、Victor I. Mamatyuk
DOI:10.1070/mc2003v013n02abeh001702
日期:2003.1
The unusually strong temperature dependence of 13C chemical shifts is observed in methyl-substituted cyclobutenyl carbocations because of a very low inversion barrier of a four-membered ring.
由于四元环的反转势垒非常低,在甲基取代的
环丁烯基碳正离子中观察到13C
化学位移异常强的温度依赖性。