The gas-phase ion chemistry of 2,2-dimesitylethenol and 2,2-dimesitylethanal was studied by deuterium labelling, by MS/MS techniques involving MIKES, CAD-MIKES and linked scans, by measurements of kinetic energy releases in unimolecular decompositions, and by ionization and appearance energy determinations. The results are discussed in terms of keto-enol tautomerization and specific rearrangements of crowded enols such as reciprocal methyl/hydrogen transfer reactions. Dish-topped metastable peak shapes are obtained for 1,3 hydrogen atom shifts from oxygen to carbon followed by CC cleavages, when the hydroxyl bearing carbon atom is bound to hydrogen.
|Original language||American English|
|Number of pages||20|
|Journal||International Journal of Mass Spectrometry and Ion Processes|
|State||Published - 15 Jul 1986|
Bibliographical noteFunding Information:
This research was supported by the United States-Israel Binational Science Foundation (BSF), Israel. The ZAB-2F was purchased through a grant from the Committee for Higher Education, Israel. We are indebted to Mrs. T. Peres for her help in operating the ZAB.