The simple enols vinyl alcohol,(E)-prop-1-en-1-01,(2)-prop-1-en-1-01, and 2-methylprop-1- en-1-01 have been generated from reactive precursors in solution in slightly aqueous CD3COCD3 and their'H NMR spectra measured under conditions where exchange of the OH proton is slow on the NMR time scale. At-80 OC J (0H-C, H) for vinyl alcohol and (E)- prop-1-en-1-01 is greater than 9 Hz whereas that for (2)-prop-1-en-1-01 and 2-methylprop ...