water; triethylamine 1.) aq. ether, 0.5 h, room temp. 2.) 2.5 h, 20 deg C; Yield given. Multistep reaction;

1: 1.) Lawesson's reagent 2.) K2CO3, H2O / 1.) toluene, reflux, 4 h 2.) overnight 2: 82 percent / Ni / toluene / 16 h / 240 °C / Closed ampulla View Scheme