反应详情

温度

90 °C

Add copper(II)sulfate pentahydrate (0.026 g; 0.2 equiv; 0.106 mmoles) and L-ascorbic acid sodium salt (0.21 g; 2.0 equiv; 1.06 mmoles) to a deoxygenated solution of tert-butyl N-but-3-ynyl-N-[2-[2-(indan-2-ylamino)-7,8-dihydro-5H-pyrido[4,3-d]pyrimidin-6-yl]-2-oxo-ethyl]carbamate (0.252 g; 1.0 equiv; 0.53 mmoles) in dimethylformamide (6 mL) and water (3 mL) (including toluene (0.05 mL) as an internal standard). Heat the reaction vessel to 90° C. and then add azidotrimethylsilane (0.565 mL; 8 equiv; 4.24 mmoles) slowly. Stir at 90° C. for 4 hours, then dilute the reaction mixture with water (100 mL) and ethyl acetate (50 mL), and extract 3×50 mL ethyl acetate. Wash the combined organic extracts with brine, dry over magnesium sulfate, filter, and concentrate. Purify the crude product by column chromatography (0 to 10% methanol in ethyl acetate) to give tert-butyl {2-[2-(2,3-dihydro-1H-inden-2-ylamino)-7,8-dihydropyrido[4,3-d]pyrimidin-6(5H)-yl]-2-oxoethyl}[2-(1H-1,2,3-triazol-4-yl)-ethyl]carbamate (0.174 g; 63%) as a colorless foam: MS (m/z): 519 (M+1).

1. extractionextract 3×50 mL ethyl acetate
2. washWash the combined organic extracts with brine
3. dry with materialdry over magnesium sulfate
4. filtrationfilter
5. concentrationconcentrate
6. customPurify the crude product by column chromatography (0 to 10% methanol in ethyl acetate)