triphenylphosphine in tetrahydrofuran under N2, mixt. of Fe-complex, 4-FC6H4NSO and PPh3 (molar ratio 1:1:2) in THF were stirred for 1-4 h at room temp.; filtered, recrystd. from ether-MeOH or CH2Cl2-hexane; elem. anal.;

thionyl chloride T=160°C; 8 h;

thionyl chloride in xylene T=160°C; 10 h;

triphenylphosphine in tetrahydrofuran under N2, mixt. of Fe-complex, 4-FC6H4NSO and PPh3 (molar ratio 1:1:2) in THF were stirred for 1-4 h at room temp.; filtered, recrystd. from ether-MeOH or CH2Cl2-hexane; elem. anal.;