反应详情
EQUATION
反应方程式
REACTANTS
反应物
PRODUCTS
生成物
AUXILIARIES
试剂、催化剂与溶剂
PROCEDURE
实验过程
Into a 5 mL Personal Chemistry microwave reaction vial were added 3-(2-Methoxy-phenyl)-5-(4,4,5,5-tetramethyl-[1,3,2]dioxaborolan-2-yl)-1-(toluene-4-sulfonyl)-1H-pyrrolo[2,3-b]pyridine (0.136 g, 0.270 mmol), 5-Bromo-N,N-dimethyl-nicotinamide (0.0756 g, 0.332 mmol; preparation described below), 1,1′-bis(diphenylphosphino)ferrocenepalladium(II)-dichloride dichloromethane adduct (16.2 mg, 0.01 mmol), acetonitrile (2 mL) and saturated aqueous NaHCO3 (2 mL). The vial was sealed, purged with N2, and irradiated in a Personal Chemistry Optimizer at 90° C. for 15 min. The layers were separated, and the aqueous phase was extracted 3× with EtOAc. The combined organic phase was treated with brine, dried (Na2SO4), filtered and concentrated. The crude product was dissolved in 3:1 MeOH/acetone (4 mL total) and treated with 500 μL of 50% w/w KOH(aq) for 1 h. Glacial Acetic acid was added to obtain pH 7, then the reaction mixture was concentrated. The residue was partitioned between EtOAc and water, then the layers were separated, and the organic phase was washed 2× with water. The organic phase was treated with brine, dried (Na2SO4), filtered and concentrated. Purification by flash silica gel chromatography using a gradient of ethyl acetate (containing 10% MeOH) and hexanes afforded the title compound as a tan powder (57 mg, 57%). 1H-NMR (500 MHz, d6-DMSO) δ=11.96 (br. s, 1H), 8.95 (d, J=2.5 Hz, 1H), 8.56 (d, J=2.0 Hz, 1H), 8.52 (d, J=2.0 Hz, 1H), 8.24 (d, J=2.0 Hz, 1H), 8.13 (t, J=2.0 Hz, 1H), 7.72 (d, J=3.0 Hz, 1H), 7.59(dd, J=2.0, 5.5 Hz, 1H), 7.25 (dd, J=1, 7.5 Hz, 1H), 7.08 (d, J=7.5 Hz, 1H), 6.99 (t, J=7.5 Hz, 1H), 3.76 (s, 3H), 2.97 (s, 3H), 2.92 (s, 3H); MS: m/z 373.1 [MH+].
WORKUP
后处理
- customInto a 5 mL Personal Chemistry microwave reaction
- customThe vial was sealed
- custompurged with N2
- customirradiated in a Personal Chemistry Optimizer at 90° C. for 15 min
- customThe layers were separated
- extractionthe aqueous phase was extracted 3× with EtOAc
- additionThe combined organic phase was treated with brine
- dry with materialdried (Na2SO4)
- filtrationfiltered
- concentrationconcentrated
- dissolutionThe crude product was dissolved in 3:1 MeOH/acetone (4 mL total)
- additiontreated with 500 μL of 50% w/w KOH(aq) for 1 h
- additionGlacial Acetic acid was added
- customto obtain pH 7
- concentrationthe reaction mixture was concentrated
- customThe residue was partitioned between EtOAc and water
- customthe layers were separated
- washthe organic phase was washed 2× with water
- additionThe organic phase was treated with brine
- dry with materialdried (Na2SO4)
- filtrationfiltered
- concentrationconcentrated
- customPurification by flash silica gel chromatography