Sodium Carbonate → 1,1-Dimethylethyl N-((4-hydroxy-1,1-dimethyl-2-oxo-6-(3-pyridinyl)-naphthalen-3-yl)carbonyl)glycinate

Participants

Reaction Conditions

Reaction Steps

A suspension of 1,1-dimethylethyl N-((6-bromo-4-hydroxy-1,1-dimethyl-2-oxo-naphthalen-3-yl)carbonyl)glycinate (284 mg, 669 μmol, see Example 39), pyridin-3-ylboronic acid (165 mg, 1339 μmol), and Na2CO3 (2.0M aqueous solution (669 μL, 1339 μmol)) in 1,4-dioxane (5 mL) was treated with Pd(PPh3)4 (77 mg, 67 μmol) in a microwave vial. The vessel was capped, degassed, backfilled with argon (2×), and heated at 150° C. in a microwave for 1200 sec. The reaction was diluted with EtOAc (50 mL), washed with water (50 mL) and brine (50 mL), dried over MgSO4, concentrated in vacuo, and purified by silica gel chromatography (eluant: 20-28-40% EtOAc/hexane) affording 113 mg of the title compound. MS m/e=423.2 (M+H)+.

Provenance & Evidence