Water → HCID 178440841, compound

Participants

Reaction Steps

First, 2.27 g (17.02 mmol) of AlCl3 was dissolved in 200 ml of dry Et2O in a Schlenk flask under controlled, positive nitrogen pressure. Second, the solution was cooled to 0 degrees centigrade and 17.0 g (17.0 mmol) of 1.0M LiAlH4 was charged into the flask via syringe. The resulting suspension was warmed to room temperature and agitated for approximately 15 minutes. Next, 10.00 g (17.02 mmol) of the above prepared 6-bromo-1-(tetra-tert-butylferrocenyl)-2-hexanone was slowly added to the suspension. Once the addition of the ketonic product was complete, the solution was heated to reflux for approximately 3 hours, after which time the solution was cooled to room temperature. The reaction was then quenched by slowly adding H2O to the solution. When no further exothermic reaction was observed, 250 ml of H2O was added to dilute the solution. The solution was then transferred to a separatory funnel, whereupon the organic layer was collected and the aqueous layer was extracted with 100 ml of Et2O. The organic portions were combined and then washed with NaHCO3 and brine. Next, the solution was dried over MgSO4. The solution was then decanted from the drying agent and filtered. Next, the solvent was removed via rotary evaporation yielding a yellow-orange oil. The oil was dissolved in a small amount of hexane, applied to a vacuum assisted gel column, and eluted with more hexane. Upon solvent removal, 8.73 g of 6-bromo-1-(tetra-tert-butylferrocenyl)hexane was isolated as a yellow-orange solid.

Provenance & Evidence