sodium sulfide; tetraphosphorus decasulfide in tetrahydrofuran T=20°C; 3.5 h;

1: water / 90 °C / |Green chemistry 2: water / 90 °C / |Green chemistry View Scheme

1: ammonia / water / 20 °C / |Green chemistry 2: iodine / water / 20 °C / |Green chemistry 3: ammonia / water / 20 °C / |Green chemistry 4: water / 90 °C / |Green chemistry 5: water / 90 °C / |Green chemistry View Scheme

bis(tri-n-butyltin)oxide in benzene 0.5 h; Heating;