Sodium Iodide → HCID 14329880, compound

Participants

Reaction Steps

The procedure of Example 7 was employed to alkylate 0.9 g of the ethyl ester of racemic-3,4-dihydro-6-hydroxy-2-methyl-2H-1-benzopyran-2-carboxylic acid with 4'-(3-bromopropoxy)-2'-hydroxy-3'-n-propylacetophenone (1.5 g), using sodium hydride (12.16 mmole), and sodium iodide (10 mmoles), in N,N-dimethylformamide. After saponification with lithium hydroxide monohydrate (1.5 g), the crude acid product was purified by chromatography on silica gel. There was obtained 1.16 g (68.9%) of racemic-6-[3-(4-acetyl-3-hydroxy-2-propylphenoxy)propoxy]-3,4-dihydro-2-methyl-2H-1-benzopyran-2-carboxylic acid as an off-white solid mp 108°-110.5° C.

Provenance & Evidence