Reduction of olefinic bond under ammonia chemical ionization |
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| Authors: | KG Das A Mahender Reddy M Vairamani KP Madhusudhanan D Fraisse JC Tabet |
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| Institution: | Regional Research Laboratory, Hyderabad India;Central Drug Research Institute, Lucknow India;Centre de Spectrometrie de Masse Service Central d'' Analyse, Vernaison France;Laboratoire de Synthese Organique Ecole Polytechnique, Palaiseau France |
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| Abstract: | The unsaturated dicarboxylates (III and IV) form stable (M+N2H7)+ adducts in addition to the (M+NH4)+ adduct. At high ammonia pressure in the ion source, bimolecular reactions between (M+NH4)+ (M+N2H7) adducts and NH3 result in the reduction of olefinic bonds in unsaturated and dicarboxylates. Evidence was obtained from MIKE/CAD data on the possible structure of the product ion. |
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