反应详情

温度

40 °C

To a solution of (E)-ethyl 2-chloro-6-(3-methoxy-3-oxoprop-1-enyl)-4-propylbenzoate (0.92 g, 2.96 mmol) in 20 mL of CH2Cl2 was added N-(methoxymethyl)-N-(trimethylsilylmethyl)benzylamine (0.77 g, 3.25 mmol) and trifluoroacetic acid (0.045 mL, 0.6 mmol). The solution was allowed to stir at 40° C. for 2 h. Starting material still remained by TLC analysis and so additional N-(methoxymethyl)-N-(trimethylsilylmethyl)benzylamine (0.1 g, 0.4 mmol) and trifluoroacetic acid (2 drops) were added and the reaction was stirred at 40° C. for an additional 30 min and then at ambient temperature for 18 h. The reaction was quenched with sat'd aq NaHCO3 and extracted with EtOAc. The organics were washed with brine, dried (Na2SO4) and concentrated. The residue was purified by flash chromatography (230-400 mesh silica gel, 6:1 hexane/EtOAc) to afford 1.17 g (90%) of the title compound as an oil. LRMS (ES)+: 444.25/446.24 (M+H)+.

1. additionwere added
2. stirringthe reaction was stirred at 40° C. for an additional 30 min
3. waitat ambient temperature for 18 h
4. customThe reaction was quenched with sat'd aq NaHCO3
5. extractionextracted with EtOAc
6. washThe organics were washed with brine
7. dry with materialdried (Na2SO4)
8. concentrationconcentrated
9. customThe residue was purified by flash chromatography (230-400 mesh silica gel, 6:1 hexane/EtOAc)