反应 #3366665
相关文献 (1)
openreactiondata ↗doi:10.6084/m9.figshare.5104873.v1; patent:US06867243B2
反应条件: temp:-75.01; pressure:0.00; stir:; See reaction.notes.procedure_details.
实验步骤: A solution of n-butyllithium (77.34 cm3, 0.1934 mol, 2.5M in hexane) was added slowly to a solution of 9-ethylfluorene (25.00 g, 0.1289 mol) in THF (250 cm3) at −70° C. The solution was stirred for 1 hour at −75° C. and 1-bromoethane (17.59 cm3, 0.1934 mol) was added slowly. The solution was allowed to warm to room temperature and then stirred overnight. Dilute hydrochloric acid (200 cm3, 20%) was added to the reaction mixture and stirred for a further 10 minutes. Water (250 cm3) was added and the product extracted into diethyl ether (3×300 cm3). The combined organic extracts were dried (MgSO4) and the solvent removed on a rotary evaporator. The resulting oil was cooled to room temperature and recrystallised with ethanol to yield white crystals (19.50 g, 68%, m.pt. 60-62° C.). to warm to room temperature stirred overnight stirred for a further 10 minutes the product extracted into diethyl ether (3×300 cm3) The combined organic extracts were dried (MgSO4) the solvent removed on a rotary evaporator The resulting oil was cooled to room temperature recrystallised with ethanol
来源 ID: ord-8e3d25f035174fc18e9700d9e1c9fb1e