Hydrochloric Acid → HCID 22609582, compound

Participants

Reaction Steps

Added to a solution of 65.2 mg (0.23 mmol) of ethyl 3-(3,4-dihydro-6,7-dimethoxy-2-naphthyl)-2-propynoate synthesized by the process described in Referential Example 13 in methanol-tetrahydrofuran (1:1; 1 ml) was 0.5 ml (2.5 mmol) of a 5N aqueous solution of potassium hydroxide, and the mixture was stirred for 30 minutes at room temperature. A saturated saline solution and 0.25 ml (3.0 mmol) of concentrated hydrochloric acid were added to the reaction mixture to conduct extraction with chloroform. An organic layer was dried over anhydrous sodium sulfate and then concentrated under reduced pressure. The resultant concentrated residue was purified by column chromatography on silica gel to obtain 61.4 mg (quantitative) of 3-(3,4-dihydro-6,7-dimethoxy-2-naphthyl)-2-propynoic acid as a colorless amorphous powder.

Provenance & Evidence