Hydrochloric Acid → HCID 15595182, compound

Participants

Reaction Steps

A mixture of 1.25 g of the iodohexyl chromanone product from Example 4, 0.49 g of 2,4-dihydroxy-3-propylacetophenone, 0.841 g of anhydrous potassium bicarbonate, 25 ml of acetone, and 12 ml of N,N-dimethylformamide was refluxed and stirred for 6 hours. The resulting mixtures was cooled, poured into cold 1N hydrochloric acid, and extracted 3 times with ether. The combined ether extracts were washed with saturated aqueous sodium bicarbonate, water, and brine, then dried (magnesium sulfate), filtered and concentrated in vacuo giving 1.5 of an oil. This material was chromatographed on 45 g of silica gel. Elution with 2:1 hexane-ethyl acetate afforded 1.18 g (83.4%) of rac-[[2-[6-(4-acetyl-3-hydroxy-2-propylphenoxy)-hexyl]-3,4-dihydro-2-methyl-4-oxo-8-propyl-2H-1-benzopyran-7-yl]oxy]acetic acid methyl ester as a colorless oil.

Provenance & Evidence