Scheme 1. Synthesis of diaryl thiourea derivatives DATU1-10a.
aReagents and conditions: (a) Dabco, CS2, toluene; (b) BTC, DCM; (c) Pd(PPh3)4, K2CO3, dioxane, 100°C; (d) DCM, room temperature.
aReagents and conditions: (a) Dabco, CS2, toluene; (b) BTC, DCM; (c) Pd(PPh3)4, K2CO3, dioxane, 100°C; (d) DCM, room temperature.