1-Benzylpiperazine → 8-(4-Benzyl-piperazin-1-yl)-6-methoxy-4-oxo-4H-chromene-2-carboxylic acid ethyl ester

온도

80 °C

Tris(dibenzylideneacetone)dipalladium(0) (0.280 g, 0.31 mmol), 2,2'-bis(diphenylphosphino)-1,1'-binaphthyl (0.457 g, 0.73 mmol), ethyl 8-bromo-6-methoxy-4-oxo-4H-chromene-2-carboxylate (2 g, 6.11 mmol), 1-benzylpiperazine (1.169 mL, 6.73 mmol) and cesium carbonate (2.79 g, 8.56 mmol) were heated under argon to 80 °C in toluene (60 mL) overnight. The reaction mixture was allowed to cool. Ethylacetate was added and the organic mixture was filtered. The filtrate was evaporated onto Silica gel. The crude product was added to a silica gel column and was eluted with MeOH/DCM 0-5%. 1H NMR in CDCl3 is consistent with desired product MS (m+1) = 423. HPLC Peak RT = 3.38 minutes is product. Purity = 63%.

ORD 기록

ord-a7f71cce88db46cba0388c01927b5a88

출처 데이터셋

750 AstraZeneca ELN dataset

원본 링크

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