反应详情

To a solution of compound 13 (0.701 g, 3.99 mmol) in AcOH (10 mL) was added 4,4,4-trifluoro-1-(2-furyl)-1,3-butanedione (0.591 mL, 3.99 mmol). The solution was stirred at 80 degrees for a total of 22 minutes. After the addition of toluene to the brown solution it was concentrated under reduced pressure to a brown-green sludge. The sludge was dry loaded onto a 40M Biotage column and then eluted with a gradient of 5 to 20% ethyl acetate in hexanes to furnish compound 14 (0.909 g, 74%) as a light brown oil which solidified upon standing. LRMS (ESI): calc. 309.2; found 310.1 (MH)+.

1. concentrationwas concentrated under reduced pressure to a brown-green sludge
2. customThe sludge was dry
3. washeluted with a gradient of 5 to 20% ethyl acetate in hexanes