摘要:
The synthesis of several 3-(polyfluoro)thiophenes, which are possible precursors to conductive polythiophenes, is described. This report includes an improved synthesis of 3-trifluoromethylthiophene and the previously reported but uncharacterized 3-fluoroformylthiophene. The new compounds 1-(3-thienyl)-1H,2H,3H,3H-nonafluorohept-1-ene, l-(3-thienyl)-1H,2H,3H,3H-tridecafluoronon-1-ene, 1-(3-thenyl)-trifluoroacetate, 1-(3-thenyl)-heptafluorobutyrate, and 1-(3-thenyl)-3-fluorosulfuryltetrafluoroethylether are reported. The last compound is unstable and decomposes to 1-fluorosulfuryl-1-fluoroformyldifluoromethane and thenyl fluoride. More extensive data for the previously prepared 1-(3-thienyl)-1H,2H,2H,3H,3H-tridecafluoronon-1-ol and 1-(3-thienyl)-1H,2H,2H,3H,3H-nonafluoroheptan-1-ol are also included. (C) 1999 Elsevier Science S.A. All rights reserved.