triethylamine in tetrahydrofuran THF soln. of triethylamine and thioacetic acid added to a THF soln. of PPh3PbCl and stirred for 4 h; vac. evapn.; extracted with benzene and filtered; added to a suspn. of Na2S; stirred for 3 h; filtered; evapd.; recrystd. from benzene soln. by slow evapn.; elem. anal.;

triethylamine in tetrahydrofuran H2S passing (0.5 h); evapn., recrystn. (light petroleum); elem. anal.;

in tetrahydrofuran addn. of Pb compd. in portions to Na2S suspension under N2, room temp., 30 min; pptn.; stirring, room temp., 14h; pouring into water; filtration; extn. of ppt. with ether; evapn.; drying (vac., 30 min); recrystn. (benzene, hexane); elem. anal.;

in tetrahydrofuran byproducts: NaCl, PbS; addn. of Pb compd. in portions to Na2S suspension under N2, room temp., 30 min; pptn.; stirring, room temp., 14h; pouring into water; filtration; extn. of ppt. with ether; evapn.; drying (vac., 30 min); recrystn. (benzene, hexane); elem. anal.;

1: benzene 2: acetonitrile View Scheme

1: chloroform 2: benzene 3: acetonitrile View Scheme

in acetonitrile to acetonitrile soln. of (C6F5)3SbS is added Ph6Pb2 in acetonitrile (molar ratio 1:1) and stirred for 3 h at room temp.; soln. is concd., petroleum-ether (60-80°C) is added;