Studies in organic mass spectrometry. XIX The fragmentation of the trimethylsilyl derivatives of some 2,3‐dialkyl‐1,4‐cyclopentanediols

Abstract
The mass spectra of the TMS‐ethers of the isomeric 2,3‐dialkyl‐1,4‐cyclopentanediols are discussed. These compounds exhibit fragmentations, characteristic for the TMS‐1,3‐cyclopentanediol‐system. The dimethyl substituted compounds display differences in the ion abundances for a number of ions, depending upon the stereochemistry of the trimethylsiloxy groups, while for longer alkyl groups only differences in the intensity of a rearrangement ion at m/e 147 are found. A considerable change in the mass spectral behaviour is found for the compounds with an 1′, 2′‐unsaturated alkyl substituent.