反应详情

To a solution of tert-butyl [3-(5-amino-6-methylpyridin-3-yl)propyl]carbamate (2.99 g, 11.3 mmol), 1,3,-bis(benzyloxycarbonyl)-2-methyl-2-thiopseudourea (3.41 g, 9.51 mmol), and mercury(II) chloride (3.37 g, 12.4 mmol) in DCM (100 mL) was added TEA (5.19 mL, 37.3 mmol) dropwise via syringe. The reaction mixture was allowed to stir at rt overnight. The reaction mixture was filtered over a pad of Celite® and the resulting filtrate was concentrated. The residue was purified by column chromatography to give dibenzyl {(Z)-[(5-{3-[(tert-butoxycarbonyl)amino]propyl}-2-methylpyridin-3-yl)amino]methylylidene}biscarbamate (3.34 g, 61%) as a white solid. LCMS (FA): Rt=1.90 min, m/z=576.0 (M+H).

1. filtrationThe reaction mixture was filtered over a pad of Celite®
2. concentrationthe resulting filtrate was concentrated
3. customThe residue was purified by column chromatography