反应详情

1,1-Dimethylethyl (2S)-2-methyl-4-{[4-methyl-6-(methylamino)-3-pyridinyl]methyl}-1-piperazinecarboxylate (D101) (0.038 g, 0.11 mmol) was dissolved in dry DCM (2 mL). Triethylamine (0.016 g, 0.16 mmol) was added dropwise and after 5 minutes a solution of the acid chloride from step 1 in dry DCM (2 mL) was added dropwise. The reaction mixture was then left stirring under argon at room temperature overnight. Saturated aqueous NaHCO3 (15 mL) was added and the aqueous layer extracted with DCM (3×5 mL). The organic extracts were dried (Na2SO4) and the crude product was purified by column chromatography. Elution with a 0-100% EtOAc/petroleum ether gradient gave the title compound as a colourless oil (0.026 g). MS (ES): MH+ 550.4

1. additionwas added dropwise
2. waitThe reaction mixture was then left
3. extractionthe aqueous layer extracted with DCM (3×5 mL)
4. dry with materialThe organic extracts were dried (Na2SO4)
5. customthe crude product was purified by column chromatography
6. washElution with a 0-100% EtOAc/petroleum ether gradient