反应详情

温度

120 °C

A glass microwave vessel was charged with (1H-benzo[d]imidazol-2-yl)(3-(3-chloropyrazin-2-yloxy)azetidin-1-yl)methanone (see PREPARATION P23.1; 219 mg, 0.664 mmol), tert-butyldimethyl(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)cyclohex-3-enyloxy)silane (366 mg, 1.082 mmol, purchased from Small Molecules Inc.), sodium carbonate (211 mg, 1.992 mmol), and dioxane:water (10:1, 15 mL). The solution was purged with N2 for 5 minutes, then palladium tetrakis (153 mg, 0.133 mmol) was added. The reaction mixture was stirred and heated in a Biotage Initiator at 120° C. for 60 minutes. The reaction was poured into water (30 mL) and extracted with EtOAc (2×20 mL). The combined EtOAc layers were eluted through a plug of silica gel. The filtrate was concentrated in vacuo to give crude (1H-benzo[d]imidazol-2-yl)(3-(3-(4-(tert-butyldimethylsilyloxy)cyclohex-1-enyl)pyrazin-2-yloxy)azetidin-1-yl)methanone (550 mg, 164% yield), as a yellow solid. The product was carried forward in the next step without further purification. MS (ESI) m/z 506.3 (MH+).

1. customThe solution was purged with N2 for 5 minutes
2. extractionextracted with EtOAc (2×20 mL)
3. washThe combined EtOAc layers were eluted through a plug of silica gel
4. concentrationThe filtrate was concentrated in vacuo