13C nuclear magnetic resonance study of the formation of a cyclopentyl cation from thujan-3-ol
Abstract
In solution in SbF5–HSO3F–SO2 at –50°, 4α-H-thujan-3β-ol forms a cation with the p-menthane structure; in the absence of SbF5, this ion decomposes slowly to yield a 2,3-dimethyl-1-propylcyclopentyl cation.