反应详情

To (2-methyl-1-{2-[5-(4-trimethylsilanylethynyl-phenyl)-1H-imidazol-2-yl]-pyrrolidine-1-carbonyl}-propyl)-carbamic acid methyl ester (3.08 g, 6.60 mmol) in MeOH was added K2CO3 (1.82 g, 13.2 mmol). After stirring for 5 h, the reaction was filtered then concentrated. The residue was diluted with EtOAc then washed with H2O. The aqueous phase was back-extracted with EtOAc two times then the organic phases were combined, washed with brine, dried over Na2SO4, and concentrated. The crude material was purified by silica gel chromatography (5-10% MeOH—CH2Cl2 gradient) to afford (1-{2-[5-(4-ethynyl-phenyl)-1H-imidazol-2-yl]-pyrrolidine-1-carbonyl}-2-methyl-propyl)-carbamic acid methyl ester (2.62 g, 6.6 mmol, quantitative yield). LCMS-ESI+: calc'd for C22H27N4O3: 395.2 (M+H+). Found: 395.2 (M+H+).

1. filtrationthe reaction was filtered
2. concentrationthen concentrated
3. additionThe residue was diluted with EtOAc
4. washthen washed with H2O
5. extractionThe aqueous phase was back-extracted with EtOAc two times
6. washwashed with brine
7. dry with materialdried over Na2SO4
8. concentrationconcentrated
9. customThe crude material was purified by silica gel chromatography (5-10% MeOH—CH2Cl2 gradient)