2480-60-6Relevant academic research and scientific papers
Keto-Enol Equilibria in Mixed Acetic Sulphuric Anhydrides
Montoneri, Enzo,Tempesti, Ezio,Giuffre, Luigi,Castoldi, Aldo
, p. 662 - 667 (2007/10/02)
Mixed acetic sulphuric anhydrides obtained from both equimolar SO3-AcOH and SO3-Ac2O systems in liquid SO2 are found at low temperature (=.CO.OSO3Y) and enol (CH:COH.OSO3Y) forms (Y=SO3(1-) or Ac).At room temperature a cleavage reaction is shown to occur through the intermediacy of keten, which reacts further to yield oligomers and sulpho-derivatives . This cleavage reaction appears specifically not to involve participation of acetylium ions, whereas previously these ions were normally considered as the principal precursor of keten intermediates.
