Abstract
AbstractAmmonia, isobutane and methane chemical ionization mass spectra have been measured for some substitutedcis‐1,3‐cyclopentane dicarboxylic acids and their derivatives. The relative proton affinities of the different functional groups determine the protonation site in the molecule and thereby greatly affect the fragmentation. Intramolecular catalysis clearly facilitates the elimination of water in cases where functional groups can interact with each other.
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