Propofol → 6-(4-Hydroxy-3,5-diisopropyl-phenyl)-6-oxo-hexanoic acid ethyl ester

Participants

Reaction Steps

Monomethyl adipate (61 g, 350 mmol) was treated with excess oxalyl chloride in tetrahydrofuran. The mixture was concentrated, and the resulting acid chloride was mixed with 2,6-Diisopropyl phenol (57 g, 350 mmol) at 0° C. Aluminum chloride (93 g, 700 mmol) and a catalytic amount of 1,2-dichloroethane were added in portions, and the mixture was allowed to warm to room temperature and stirred overnight. The reaction was quenched with 1 M HCl and extracted with ethyl acetate. Concentrated in vacuo and chromatographed the residue to give the expected product.

Provenance & Evidence