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Mass spectroscopic study of 2,5-dimethyl-4-benzoyl- and 2,5-dimethyl-4-benzylpyridine derivatives

Journal Article · · Chem. Heterocycl. Compd. (Engl. Transl.); (United States)
DOI:https://doi.org/10.1007/BF00486916· OSTI ID:7159798
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The dissociative ionization of sixteen 4-benzoyl- and 4-benzylpyridine derivatives and their deuteroanalogs has been studied. An ortho effect, due to the benzoyl and benzyl radicals in the methyl group in the 5-position of the pyridine ring, has been detected. It has also been established that fragmentation of 4-benzoylpyridines substituted with a nitro group in the benzene ring leads to (M - OH)/sup +/ ions, due to the ortho effect, whereas fragmentation of 4-benzyl-pyridines leads to (M-C/sub 6/H/sub 5/R)/sup +/ ions. The probability of a given process depends on the position and nature of any substituent in the benzene ring; this makes it possible to identify different isomers in a given series of compounds.
Research Organization:
P. Lumumba Peoples' Friendship Univ., Moscow (USSR)
OSTI ID:
7159798
Journal Information:
Chem. Heterocycl. Compd. (Engl. Transl.); (United States), Journal Name: Chem. Heterocycl. Compd. (Engl. Transl.); (United States) Vol. 23:6; ISSN CHCCA
Country of Publication:
United States
Language:
English

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Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400202* -- Isotope Effects
Isotope Exchange
& Isotope Separation
640304 -- Atomic
Molecular & Chemical Physics-- Collision Phenomena
74 ATOMIC AND MOLECULAR PHYSICS
ALCOHOLS
AZINES
BEAMS
CHARGED PARTICLES
CHEMICAL REACTIONS
COLLISIONS
DEUTERATION
DEUTERIUM COMPOUNDS
DISSOCIATION
ELECTRON BEAMS
ELECTRON COLLISIONS
ELECTRON-MOLECULE COLLISIONS
ENERGY RANGE
EV RANGE
EV RANGE 10-100
HETEROCYCLIC COMPOUNDS
HYDROGEN COMPOUNDS
HYDROXY COMPOUNDS
IONIZATION
IONS
ISOMERS
ISOTOPE EFFECTS
ISOTOPIC EXCHANGE
LEPTON BEAMS
MASS SPECTRA
METHANOL
MOLECULAR IONS
MOLECULE COLLISIONS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
PARTICLE BEAMS
PYRIDINES
SPECTRA
STRUCTURAL CHEMICAL ANALYSIS
VALENCE