Acetic Acid → [3-Cyclopropyl-4-(5-ethanesulfonyl-pyridin-2-yloxy)-6-fluoro-naphthalen-2-yl]-acetic acid methyl ester

Participants

Reaction Conditions

Reaction Steps

To a cooled solution of [4-(5-ethanesulfonyl-pyridin-2-yloxy)-6-fluoro-3-vinyl-naphthalen-2-yl]-acetic acid methyl ester (6.0 mg, 0.014 mmol, methyl ester of example 17-1) in tetrahydrofuran, was added a solution of diazomethane (0.1 M, 5 mL) in diethyl ether at 0° C. under an argon atmosphere, followed by palladium acetate (1 mg) in two portions. After being stirred at 0° C. for 2 hours, the reaction mixture was treated with acetic acid (0.2 mL) to quench the reaction, and then filtered. The filtrate was concentrated in vacuo to afford the crude product of [3-cyclopropyl-4-(5-ethanesulfonyl-pyridin-2-yloxy)-6-fluoro-naphthalen-2-yl]-acetic acid methyl ester as a yellow oil.

Provenance & Evidence