Propofol → 2-(Chloromethoxy)-1,3-diisopropylbenzene

Participants

Reaction Conditions

Reaction Steps

A four-necked 500 mL round bottom flask was equipped with a mechanical stirrer, nitrogen inlet, condenser and thermometer. It was charged with 17.8 grams (0.10 moles) of 2,6-diisopropylphenol, 200 mL of THF, 8.0 grams (0.20 mole) of sodium hydroxide pellets, and 387 grams (3.0 moles, 194 mL) of bromochloromethane. The reaction mixture was heated to 64° C. and held for 2-3 hours until no more 2,6-diisopropylphenol was present as measured by GC. After cooling to 25° C., the suspension was filtered and the filter cake was washed with THF. The THF was removed by rotary evaporation and the resultant oil was distilled under vacuum (0-1 torr, b.p.=80° C.) to give 16.9 grams (0.074 moles, 75% yield) of O-chloromethyl 2,6-diisopropyl phenol.

Provenance & Evidence