Collect. Czech. Chem. Commun. 1988, 53, 588-592

17O and 13C NMR spectra of some geminal diacetates

Antonín Lyčkaa, Josef Jirmana and Jaroslav Holečekb

a Research Institute of Organic Syntheses, 532 18 Pardubice-Rybitví
b Department of General and Inorganic Chemistry, Institute of Chemical Technology, 532 10 Pardubice


The 17O and 13C NMR spectra of eight geminal diacetates RCH(O(CO)CH3)2 derived from simple aldehydes have been measured. In contrast to the dicarboxylates R1R2E(O(CO)R3)2, where E = Si, Ge, or Sn, whose 17O NMR spectra only contain a single signal, and, on the other hand, in accordance with organic carboxylic esters, the 17O NMR spectra of the compound group studied always exhibit two well-resolved signals with the chemical shifts δ(17O) in the regions of 183-219 ppm and 369-381 ppm for the oxygen atoms in the groups C-O and C=O, respectively.