反应详情

A mixture of 6-amino-4-methyl-3-pyridinecarbaldehyde (D99) (0.053 g, 0.39 mmol), 1,1-dimethylethyl (2S)-2-methyl-1-piperazinecarboxylate (0.117 g, 0.58 mmol) and sodium tri(acetoxy)borohydride (0.206 g, 0.97 mmol) in 1,2-DCE (10 mL) was sonicated to aid dissolution of the starting material then stirred at room temperature overnight. Saturated aqueous NaHCO3 (30 mL) was added and the mixture was stirred for 24 h. The reaction mixture was extracted with DCM (3×10 mL) and the organics were dried and concentrated to give the crude title compound as an oil (0.067 g) which was used in the next step without further purification. MS (ES): MH+ 321.3, MNa+ 343.3.

1. customwas sonicated
2. dissolutiondissolution of the starting material
3. stirringthe mixture was stirred for 24 h
4. extractionThe reaction mixture was extracted with DCM (3×10 mL)
5. customthe organics were dried
6. concentrationconcentrated