反应详情

温度

-20 °C

To a 50 mL flask placed with KH (30%, 685 mg, 6.0 mmol, pre-washed with nHex) was added a solution of anhydrous isopropanol (0.76 mL, 10.0 mmol) in anhydrous THF (5 mL) at room temperature under argon. The reaction mixture was cooled to −20° C. 4-chloro-6-methyl-[1,5]naphthyridine-3-carbonitrile (407.0 mg, 2.0 mmol) in THF (8 mL) was added dropwise and the reaction mixture was stirred at −20° C. to r.t for 30 min. The reaction mixture was quenched with sat.NH4Cl and extracted with AcOEt (100 mL×3). The combined organic layers was dried over Na2SO4 and concentrated to give the crude product which was purified by flash column (AcOEt/Hex=1/3˜3/2) to give 4-Isopropoxy-6-methyl-[1,5]naphthyridine-3-carbonitrile as white solid (240.0, 52.8%) which was used in the next step without further purification.

1. washTo a 50 mL flask placed with KH (30%, 685 mg, 6.0 mmol, pre-washed with nHex)
2. customThe reaction mixture was quenched
3. extractionNH4Cl and extracted with AcOEt (100 mL×3)
4. dry with materialThe combined organic layers was dried over Na2SO4
5. concentrationconcentrated
6. customto give the crude product which
7. customwas purified by flash column (AcOEt/Hex=1/3˜3/2)