7379-29-5Relevant academic research and scientific papers
Combined Deuterium Nuclear Magnetic Resonance and Mass-spectrometric Studies of the Exchange Reactions of Ketones over Supported Metal Catalysts
Pope, Christopher,Kemball, Charles,McDougall, Gordon S.
, p. 747 - 752 (2007/10/02)
Deuterium NMR spectroscopy has been used in conjunction with mass spectrometry to study the exchange reaction of the ketones acetone, butan-2-one and cyclopentanone over a variety of supported metal catalysts.In many of the experiments simple, random, stepwise exchange was prevalent.However, in certain instances multiple exchange occurred.For butan-2-one and cyclopentanone this multiple exchange was essentially limited to the protons on carbon atoms adjacent ot the carbonyl group, while for acetone a strong preference towards exchange into only a single methyl groupwas noted.Some hydrogenation to propan-2-ol accompanied the multiple exchange of acetone, with the majority of the alcohol being formed by addition of D2 across the carbon oxygen double bond without simultaneous exchange into the methyl group, suggesting independent η1 and η2 adsorbed acetone surface intermediates for the exchange and hydrogenation reactions respectively.
Electrophilic alkylation of an acylmetalate complex at the metal center leading to a stable methylacetylrhenium complex. Photochemical decomposition to give 2,3-butanedione via a mechanism involving carbonylation of free methyl radicals
Goldberg, Karen I.,Bergman, Robert G.
, p. 430 - 432 (2008/10/08)
Alkylation of the rhenium metalate Li[CpRe-(CO)2(COCH3)] (1) can be controlled to give either the Fischer carbene complex Cp(CO)2Re=C(OCH3)(CH3) or the new alkyl aryl complex Cp(CO)2Re(COCH3)(CH3) (2). Photochemical decomposition of 2 under 20 atm of CO leads to 2,3-butanedione; evidence is presented that the diketone is produced by formation and carbonylation of free methyl radicals.
The Effect of Surface Hydroxyl Groups upon the Deactivation of Excited Triplet Acetone Adsorbed on Porous Vycor Glass
ANPO, Masakazu
, p. 1221 - 1224 (2007/10/02)
H-D exchange between deuterated surface hydroxyl groups and excited triplet acetone has been observed on porous Vycor glass, proceeding via surface hydroxyl group-assited photoenolization of acetone.This chemical process evidences that surface hydroxyl groups play a significant role in determining the fate of the excited triplet acetone adsorbed on Vycor glass by a strong hydrogen bonding.
