ORGANOMERCURY COMPOUNDS .32. SYNTHESES OF FLUOROPHENYLMERCURIALS BY DECARBOXYLATION

The organomercury compounds HgR2 (R = 2-Cl,6-FC6H3, 2,6-F2C6H3, 2,3,6- F3C6H2, m-HC6F4, p-HC6F4, or C6F5) and RHg(O2CR) (R = 2-Cl,6-C6H3, 2,6 -F2C6H, or 2,3,6-F3C6H2) have been obtained in moderate - good and low yields respectively from decarboxylation reactions of the correspondi ng mercury(II) fluorobenzoates in boiling pyridine. By contrast, mercu ry(II) 2,3,4,5-tetrafluorobenzoate gave a low yield of CO2, a trace of Hg(o-HC6F4)2 and a very low yield of o-HC6F4Hg(O2CC6F4H-o). The Hg-19 9 NMR spectra of the diorganomercurials (R = 2-Cl,6-FC6H3, 2,6-F2C6H3, 2,3,6-F3C6H2, 2,4,6-F3C6H2, 2,6-Cl2C6H3, o-HC6F4, m-HC6F4, p-HC6F4 or C6F5) are discussed.