Br[C:2]1[CH:8]=[C:7]([F:9])[CH:6]=[CH:5][C:3]=1[NH2:4].CN(C)C=O.[CH2:15]([Sn](CCCC)(CCCC)CCCC)[CH:16]=[CH2:17]>C(OCC)(=O)C.C1C=CC([P]([Pd]([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)[P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)=CC=1>[CH2:17]([C:2]1[CH:8]=[C:7]([F:9])[CH:6]=[CH:5][C:3]=1[NH2:4])[CH:16]=[CH2:15]A round-bottom flask was fitted with a condenser, stirbar and septa and flushed with nitrogen. 2-bromo-4-fluoro aniline (9.70 g, 40.9 mmol), N,N-dimethylformamide (100 mL), allyltributyltin (15.0 mL, 48.9 mmol) and Pd(PPh3)4 (1.50 g, 1.30 mmol) were added, giving a mixture that was warmed to 80° C. After 17 hours, the reaction was cooled to room temperature, diluted with ethyl acetate (300 mL) and washed with 1:1 H2O:saturated aqueous NaCl solution (2×150 mL). The aqueous washes were combined and extracted with ethyl acetate (50 mL). The organic extracts were then combined, dried over MgSO4, filtered and concentrated in vacuo to give an oil that was purified via flash chromatography on silica gel (0% to 35% ethyl acetate/hexanes linear gradient) to give the desired product.
Wird geladen…
