Hexane → HCID 46193609, compound

Participants

Reaction Steps

7.5 g (0.068 mole) of granular anhydrous calcium chloride, 5.0 g (0.132 mole) of sodium brorhydride and 100 ml of anhydrous THF were reacted at room temperature for 4 h to form a white dispersion of calcium borohydride (Ca(BH4)2). To the dispersion compound 34 (3 g, 0.008 mole) was added and was reduced by heating under refluxing for 24 h. The progress of the reduction reaction was monitored by TLC with ethyl acetate (EA):n-hexane=3:2. When the reaction was completed, the reaction mixture was cooled to room temperature, and THF was evaporated under a reduced pressure. The remaining reaction mixture was poured into water to stop the reaction, and then was extracted with chloroform. The organic layer was recovered, dried over MgSO4 and filtered. The solvent of the filtrate was evaporated under a reduced pressure, and the residue was subjected to a column chromatography with EA:n-hexane=3:2, and then recrystallized from EA to afford compound 43 in viscous liquid (2.09 g). Yield: 72%.

Provenance & Evidence