1: P4S10 / toluene / 0.17 h / Heating 2: 85 percent / KOH / methanol; CH2Cl2 / Ambient temperature 3: 90 percent / P(CH2CH2CN)3 / toluene / 4 h / Heating View Scheme

1: P4S10 / toluene / 0.17 h / Heating 2: 85 percent / KOH / methanol; CH2Cl2 / Ambient temperature 3: 90 percent / P(CH2CH2CN)3 / toluene / 4 h / Heating 4: 1) n-BuLi / multistep reaction; also with CO2, HC(O)NMe2, PhCO2Et, ClSiMe3 View Scheme