A fast atom bombardment (FAB) mass spectrometric study on the open-chain compound 1,3-bis(cyanomethylenetriphenylphosphorane)propane-1,3-dione and on the cyclic zwitterionic compounds 4-oxy-5-triphenylphosphonium-6-methyl-2-pyrone and 4-oxy-5-triphenylphosphonium-6-phenyl-2-pyrone, obtained by reaction of carbon suboxide, C3O2, with stabilized phosphorus ylides, Ph(3)PCHX (X=CN, COMe, COPh), is described. The FAB mass spectrometric behaviour of these compounds is compared with that shown by triphenylphosphoranilideneketene, Ph(3)P=C=C=O, and by 4-hydroxy-6-methyl-2-pyrone, with the aid of metastable ion data and collision spectroscopy.
FAST-ATOM-BOMBARDMENT MASS-SPECTROMETRY OF REACTION-PRODUCTS BETWEEN C3O2 AND STABILIZED PHOSPHORUS YLIDES
BERTANI, ROBERTA;PANDOLFO, LUCIANO
1994
Abstract
A fast atom bombardment (FAB) mass spectrometric study on the open-chain compound 1,3-bis(cyanomethylenetriphenylphosphorane)propane-1,3-dione and on the cyclic zwitterionic compounds 4-oxy-5-triphenylphosphonium-6-methyl-2-pyrone and 4-oxy-5-triphenylphosphonium-6-phenyl-2-pyrone, obtained by reaction of carbon suboxide, C3O2, with stabilized phosphorus ylides, Ph(3)PCHX (X=CN, COMe, COPh), is described. The FAB mass spectrometric behaviour of these compounds is compared with that shown by triphenylphosphoranilideneketene, Ph(3)P=C=C=O, and by 4-hydroxy-6-methyl-2-pyrone, with the aid of metastable ion data and collision spectroscopy.Pubblicazioni consigliate
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