反应详情

温度

0 °C

To a solution of 4-pyridylcarbinol (0.44 mmol, 45 mg) and anhydrous tetrahydrofuran (3 ml) cooled at 0° C. was added LDA (2M, 0.6 mmol, 300 ul). The mixture was stirred at 0° C. for 15 minutes. A solution of 3′-Chloro-5′,6′-dicyano-2,3,5,6-tetrahydro-[1,2′]bipyrazinyl-4-carboxylic acid tert-butyl ester (0.29 mmol, 100 mg) in THF (2 ml) was then added to the cold mixture and stirred at 0° C. for 1 hour. Reaction mixture was poured onto 0.5M acetic acid and extracted with ethyl acetate. The crude product was purified by column chromatograph on silica using 70% EtOAc/hexanes to yield product 5′,6′-Dicyano-3′-(pyridin-4-ylmethoxy)-2,3,5,6-tetrahydro-[1,2′]bipyrazinyl-4-carboxylic acid tert-butyl ester (100 mg).

1. stirringstirred at 0° C. for 1 hour
2. customReaction mixture
3. extractionextracted with ethyl acetate
4. customThe crude product was purified by column chromatograph on silica using 70% EtOAc/hexanes