反应详情

step 1—A sealed tube containing 315 (117 mg, 0.243 mmol), 2,6-dimethoxy-pyridin-3-yl boronic acid (53 mg, 0.290 mmol, CASRN 221006-70-8), Pd(PPh3)4 (28 mg, 0.024 mmol), Na2CO3 (76 mg, 0.717 mmol) in a mixture of MeOH (3 mL) and DCM (1 mL) was irradiated in a microwave reactor at 115° C. for 30 minutes. The reaction mixture was concentrated, diluted with EtOAc, washed with brine and dried (Na2SO4), filtered and concentrated. The crude product was purified by SiO2 chromatography eluting with an EtOAc/hexane gradient (20% to 30% EtOAc) to afford 104 mg (79%) of N-(4-{(E)-2-[3-tert-butyl-5-(2,6-dimethoxy-pyridin-3-yl)-2-methoxy-phenyl]-vinyl}-3-methoxymethyl-phenyl) methanesulfonamide (322) as a colorless oil.

1. customstep 1—A sealed tube
2. customwas irradiated in a microwave reactor at 115° C. for 30 minutes
3. concentrationThe reaction mixture was concentrated
4. additiondiluted with EtOAc
5. washwashed with brine
6. dry with materialdried (Na2SO4)
7. filtrationfiltered
8. concentrationconcentrated
9. customThe crude product was purified by SiO2 chromatography
10. washeluting with an EtOAc/hexane gradient (20% to 30% EtOAc)