反应详情

To a 48 mL pressure bottle containing Intermediate 73A (495 mg, 1.269 mmol) was added 4,4,4′,4′,5,5,5′,5′-octamethyl-2,2′-bi(1,3,2-dioxaborolane) (569 mg, 2.241 mmol), potassium acetate (571 mg, 5.82 mmol) and anhydrous DMSO (10 mL). The reaction mixture was purged with argon, treated with PdCl2(dppf).CH2Cl2 (56 mg, 0.077 mmol), and heated to 85° C. for 2 h 15 min to give conversion to the desired product. LC/MS (Condition B): ret. T=2.5 min, (M+H)+ 309.07.

1. customThe reaction mixture was purged with argon
2. additiontreated with PdCl2(dppf)