David Fornals, M. A. Pericàs, F. Serratosa
1987
Citations
0
Influential Citations
13
Citations
Journal
Journal of The Chemical Society-perkin Transactions 1
Abstract
Di-t-butoxyethyne (1a) reacts with [Fe2(CO)9] affording (tetra-t-butoxycyclopentadienone)tricarbonyliron(0)(5a), the crystal structure of which has been determined by X-ray diffraction. Treatment of (5a) with trimethylamine oxide affords tetra-t-butoxycyclopentadienone (8), which had been previously converted into hydrocroconic acid (2) and the croconate dianion (3). On the other hand, (5a) with trifluoroacetic acid affords (tetra hydroxycyclopentadienone) tricarbonyliron (0)(5b), which is converted into the croconate dianion (3) by oxidation with molecular oxygen in basic medium.