Title of article
Electron Ionization Mass Spectrometric Studies of Halogen-Substituted Isocoumarins and Their 3, 4-Dihydro Derivatives
Author/Authors
AHMAD, HAFIZ BADARUDDIN GC University - Department of Chemistry, Pakistan , ASLAM, MUHAMMAD MALANA B. Z. University - Department of Chemistry, Pakistan , RAMA, ASIM HASAN Quaid-e-Azam University - Department of Chemistry, Pakistan , ILYAS, SADIA GC University - Department of Chemistry, Pakistan , YOUSAF, MUHAMMAD GC University - Department of Chemistry, Pakistan , KHAN, KHALIDMOHAMMAD University of Karachi - International Center for Chemical Sciences - HEJResearch Institute of Chemistry, Pakistan
From page
126
To page
133
Abstract
Electron ionization mass spectra of 3-(2 ,4 -dichlorophenylisocoumarin(1), 2-(2 ,4- Dichlorobenzoylmethyl) benzoic acid (2), (dl)-3-2(2 , 4 -dichlorophenyl)-3,4-dihydroisocoumarin(3),3-(2 -chloro-6 -fluorobenzyl)isocoumarin (4), 2-[2 -cxo-3 -(2-chloro-6-fluorophenyl) propyl] benzoic acid (5), (dl)-3-(2-chloro-6- flourobenzyl)-3,4-dihydroisocourmarin (6), methyl 2-[2 -oxo-3 -(2-chloro-6-fluorophenyl)propyl] benzoate (7), are descride in this paper. The major mass fragments formed by ring contractions and α -cleavage followed by the elimination of neutral fragments and radicals. The mass fragments are designed with the help of EIMS peaks
Journal title
Journal of the Chemical Society of Pakistan
Journal title
Journal of the Chemical Society of Pakistan
Record number
2645768
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