... Chem. Comm., 26, 4GB (1960), has reported tlie preparation and strong enolic character of tetrahydro- thiophene-3-one 1,l-dioxide, the only evidence for this being 0- methylation with diazomethane. ... Carinack. J . Am. ... (21;) FA Miller, in H. Gilman, “Organic Chemistry,” Vol. 111. ...