反应详情

2 g of 1-(6-chloro-3-methoxy-pyridazin-4-yl)-propan-1-one and 1.73 g of tetrakis(triphenylphosphine) palladium (0) are dissolved in 10 ml DME and the solution is stirred for 5 min at RT (room temperature) under argon. 3 g of 2,6-dimethyl-4-(4,4,5,5-tetramethyl-[1,3,2]dioxaborolan-2-yl)-phenol and 10 ml of a 2M aqueous solution of sodium carbonate are added and the reaction solution is stirred at 95° C. for 4 h. The reaction solution is poured into ethyl acetate and ished with saturated aqueous sodium bicarbonate. The organic phase is dried (MgSO4), filtered and evaporated under reduced pressure. The product is purified by silica gel chromatography, eluting with a gradient of ethyl acetate in heptane, followed by purification by preparative RP-HPLC eluting with a gradient of 0-100% acetonitrile in water (+0.01% trifluoroacetic acid). Yield 1.69 g. LC-MS (ES+) 287 (M+H)+.

1. stirringthe reaction solution is stirred at 95° C. for 4 h
2. dry with materialThe organic phase is dried (MgSO4)
3. filtrationfiltered
4. customevaporated under reduced pressure
5. customThe product is purified by silica gel chromatography
6. washeluting with a gradient of ethyl acetate in heptane
7. customfollowed by purification by preparative RP-HPLC
8. washeluting with a gradient of 0-100% acetonitrile in water (+0.01% trifluoroacetic acid)