反应详情

温度

-10 °C

To a solution of triethylsilane (0.343 ml, 2.15 mmol) in TFA (2 ml) cooled to −10° C. is added portionwise (6-chloro-2-methyl-1H-pyrrolo[2,3-b]pyridin-3-yl)-oxo-acetic acid methyl ester (0.155 g, 0.61 mmol). The reaction mixture is stirred at −10° C. for 1 hour and the solvent is removed in vacuo. The residue is washed with saturated sodium hydrogen carbonate solution and this aqueous portion is extracted with DCM (3×10 ml). The organics are combined, dried (Na2SO4) and concentrated in vacuo and the resulting crude is purified by chromatography on silica eluting with methanol/DCM (0-0.5% methanol) to yield the titled product as an off-white powder. (MH+ 239).

1. customthe solvent is removed in vacuo
2. washThe residue is washed with saturated sodium hydrogen carbonate solution
3. extractionthis aqueous portion is extracted with DCM (3×10 ml)
4. dry with materialdried (Na2SO4)
5. concentrationconcentrated in vacuo
6. customthe resulting crude is purified by chromatography on silica eluting with methanol/DCM (0-0.5% methanol)