反应详情

1-Benzyl-3-(4-methoxy-phenyl)-1,4,6,7-tetrahydro-pyrrolo[3,2-c]pyridine-5-carboxylic acid tert-butyl ester. To a solution of 0.50 g of 4-oxo-piperidine-1-carboxylic acid tert-butyl ester and 260 μL of benzylamine in toluene (5 mL) was added 0.48 g of MgSO4 and 16.7 mg of Bu2SnCl2. After 1 h, 0.45 g of 1-methoxy-4-(2-nitro-vinyl)-benzene was added and the mixture was stirred for 16 h at RT. The mixture was then diluted with water (80 mL) and extracted with EtOAc (3×15 mL) and the combined organic layers were concentrated in vacuo. Chromatography on SiO2 (1 to 20% EtOAc/hexanes) afforded 0.38 g of the desired compound. MS (ESI): exact mass calculated for C26H30N2O3, 418.23; found, m/z 419.2 [M+H]+.

1. extractionextracted with EtOAc (3×15 mL)
2. concentrationthe combined organic layers were concentrated in vacuo