Tetrahydrofuran → 2-[3-(2,2-Difluoro-benzo[1,3]dioxol-5-ylamino)-5-(2,6-dimethyl-pyridin-4-yl)-[1,2,4]-triazol-1-yl]-N-ethyl-acetamide

Participants

Reaction Steps

Intermediate D4 (0.70 g; 0.0016 mol), Iron(III) acetylacetonate (0.067 g; 0.0002 mol), THF (20 ml) and 1-methyl-2-pyrrolidinone (5 ml) were stirred at 0° C. under N2. Excess CH3MgBr in diethyl ether (2 M) was added and the mixture was brought to room temperature. The reaction mixture was then decomposed with CH3OH and evaporated in vacuo. Water and CH2Cl2 were added and the mixture was filtered over dicalite. The filtrate was evaporated and water and DIPE were added. The precipitate was filtered off, dissolved in CH2Cl2, dried over MgSO4, filtered and evaporated in vacuo. The residue was stirred in water, the precipitate was filtered off and dried. Yield: 400 mg of compound E1. melting point: 242.28° C. LCMS Retention time: 5.12; [M+H]+peak: 431; LCMS procedure 1

Provenance & Evidence