<sup>13</sup>C-NMR. Spectra, Structure and Reactivity of Cyclic Oxocarbons
作者:Werner Städeli、Roger Hollenstein、Wolfgang Von Philipsborn
DOI:10.1002/hlca.19770600325
日期:1977.4.20
The structures of cyclic polyketones, their hydrates and reduction products were studied in different solvents by 13C-NMR. spectroscopy. In dimethylsulfoxide solution rhodizonic acid (1), croconic acid (2) and squaric acid (3) exhibit signal averaging. In anhydrous tetrahydrofuran 1 and 2 could be observed as non-dynamic species. The spontaneous reactions of dodecahydroxycyclohexane (5) and decahydroxycyclopentane