反应详情

The acid (7.5 g, 15.8 mmol) obtained from step D was taken in a 500 ml 1 neck flask equipped with a nitrogen inlet and to it 200 ml of DCM, 4-aminothiomorpholine-1,1-dioxide (2.61 g, 17.4 mmol), TBTU (5.59 g, 17.4 mmol) and DIPEA (2.25 g, 17.4 mmol) were added and the contents were stirred for 1 hour. To the reaction mixture, 100 ml of water was added and the contents were acidified to pH ˜2 using concentrated HCl. The organic layer was separated, washed with brine, dried over sodium sulphate and concentrated to give the amide (3 g, 31.2%).

1. additionwere added
2. customThe organic layer was separated
3. washwashed with brine
4. dry with materialdried over sodium sulphate
5. concentrationconcentrated