反应详情

An oven dried flask was flushed with argon and charged with 18-crown-6 (15 g, 56.7 mmol), 6-iodo-1-methyl-1H-indole (10.4 g, 40.46 mmol), morpholine (4.3 mL, 48.6 mmol), sodium t-butoxide (5.42 g, 54.7 mmol), tris(dibenzylidene acetone)dipalladium (0) (186 mg, 0.20 mmol) and 2,2′-bis(diphenylphosphino)-1,1-binaphthyl) (380 mg, 0.61 mmol). The flask was flushed with argon for 10 min and dry THF (80 mL) was added. The mixture was stilled at room temperature for 5 h, then diluted with ether and washed with brine. The organic layer was dried (MgSO4), evaporated and the crude product was purified by chromatography on silica gel using 5-30% ether/hexanes to give 1-methyl-6-morpholin-4-yl-1H-indole (8.17 g, 94%). [Ref: Wolfe, J. P.; Buchwald, S. L. J. Org. Chem. 1997, 62, 6066.]

1. customAn oven dried flask
2. customwas flushed with argon
3. customThe flask was flushed with argon for 10 min
4. additiondry THF (80 mL) was added
5. additiondiluted with ether
6. washwashed with brine
7. dry with materialThe organic layer was dried (MgSO4)
8. customevaporated
9. customthe crude product was purified by chromatography on silica gel using 5-30% ether/hexanes