反应详情

To 2-((R)-1-amino-2-methyl-propyl)-3-benzyl-7-chloro-chromen-4-one (0.5 g, 1.5 mMol) and K2CO3 (0.21 g, 1.5 mMol) in DMF (10 mL) was added N-(3-bromo-2-oxopropyl)-phthalimide (0.45 g, 1.5 mMol) (Nair et al.; J. Org. Chem.; 40; 1975; 1745). The reaction was stirred at RT for 3 h, concentrated under vacuum, taken up in EtOAc, washed with water, brine, dried (Na2SO4) and evaporated to give the title compound (0.88 g, 100%) as a yellow solid: MS (ES) m/e 543.2 (M+H)+.

1. concentrationconcentrated under vacuum
2. washwashed with water, brine
3. dry with materialdried (Na2SO4)
4. customevaporated