反应详情

For a duration of 5 min., N2 was bubbled through a mixture of tert-butyl (S)-1-((S)-5-((6-bromo-2-methoxynaphthalen-1-yl)methyl)-4-oxo-2,3,4,5-tetrahydrobenzo[b][1,4]oxazepin-3-ylamino)-1-oxopropan-2-yl(methyl)carbamate (200 mg, 327 μmol, Eq: 1.00), cyclopropylboronic acid (33.7 mg, 392 μmol, Eq: 1.20), Na2CO3 (408 μl, 816 μmol, Eq: 2.50) in 1,4-dioxane (2 mL) then Pd(Ph3P)4 (18.9 mg, 16.3 μmol, Eq: 0.05) was added. The mixture was heated to reflux overnight, cooled and diluted with EtOAc. The mixture was washed with water, brine, dried over Na2SO4 and concentrated to give tert-butyl (S)-1-((S)-5-((6-cyclopropyl-2-methoxynaphthalen-1-yl)methyl)-4-oxo-2,3,4,5-tetrahydrobenzo[b][1,4]oxazepin-3-ylamino)-1-oxopropan-2-yl(methyl)carbamate (24 mg, 41.8 μmol, 12.8%) which was used without purification.

1. temperatureThe mixture was heated
2. temperatureto reflux overnight
3. temperaturecooled
4. washThe mixture was washed with water, brine
5. dry with materialdried over Na2SO4
6. concentrationconcentrated