triphenylphosphine in tetrahydrofuran under N2, mixt. of Fe-complex, 4-ClC6H4NSO 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.;

in tetrahydrofuran under N2, mixt. of Fe-complex, 4-ClC6H4NSO and (4-MeC6H4)3P (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.;

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triphenylphosphine in tetrahydrofuran under N2, mixt. of Fe-complex, 4-ClC6H4NSO 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.;

1: 96 percent / tetrahydrofuran / 2 h / -78 deg C to room temp. 2: 64 percent Spectr. / (Me3Si)2NH / tetrahydrofuran / 15 h / 18 °C 3: 35 percent / Et3O(1+)*BF4(1-) / CH2Cl2 / 16 h / -10 °C View Scheme