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Effects of functional group interactions in the chemical ionization mass spectra of some substituted cis ‐1,3‐cyclopentane dicarboxylic acids and their derivatives
Author(s) -
Vainiotal Pirjo,
Mälkönen Pentti J.
Publication year - 1987
Publication title -
organic mass spectrometry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.475
H-Index - 121
eISSN - 1096-9888
pISSN - 0030-493X
DOI - 10.1002/oms.1210221009
Subject(s) - chemistry , cyclopentane , intramolecular force , chemical ionization , isobutane , mass spectrum , fragmentation (computing) , protonation , molecule , functional group , ionization , computational chemistry , stereochemistry , medicinal chemistry , photochemistry , catalysis , organic chemistry , ion , polymer , operating system , computer science
Ammonia, isobutane and methane chemical ionization mass spectra have been measured for some substituted cis ‐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.