反应详情

To a solution of 137.8 mg (0.8 mmol) of 5-tert-butyl-4-methyl-thiazol-2-ylamine in DCM (4 mL) were added 169.5 mg (0.8 mmol) of 2,2,2-trichloroethyl chloroformate and 0.21 mL (1.2 mmol) of N,N-diisopropylethylamine. The reaction was stirred for 18 h at room temperature. The reaction mixture was washed with saturated aqueous NaHCO3 solution and the aqueous layer was back-extracted with DCM (2×2 mL). The combined organic layers were dried over Na2SO4, filtered and the filtrate was concentrated under reduced pressure. The residue was dissolved in DCE (4 mL) and a solution of 443 mg (0.8 mmol) of [1,4]diazepan-1-yl-(tetrahydro-pyran-4-yl)-methanone (triple trifluoroacetic acid salt, prepared according to Method L, step 1-2) in DCE (2 mL) and 0.42 mL (2.4 mmol) of N,N-diisopropylethylamine were added. The reaction was stirred for 18 h at 80° C. The reaction mixture was washed with 10% aqueous citric acid solution (3 mL). The aqueous layer was back-extracted with DCM (2×2 mL). The combined organic extracts were dried over Na2SO4, filtered and the filtrate was concentrated under reduced pressure. The crude product was purified by mass-triggered preparative LCMS to afford 92.7 mg of 4-(tetrahydro-pyran-4-carbonyl)-[1,4]diazepane-1-carboxylic acid (5-tert-butyl-4-methyl-thiazol-2-yl)-amide.

1. washThe reaction mixture was washed with saturated aqueous NaHCO3 solution
2. extractionthe aqueous layer was back-extracted with DCM (2×2 mL)
3. dry with materialThe combined organic layers were dried over Na2SO4
4. filtrationfiltered
5. concentrationthe filtrate was concentrated under reduced pressure
6. dissolutionThe residue was dissolved in DCE (4 mL)
7. stirringThe reaction was stirred for 18 h at 80° C
8. washThe reaction mixture was washed with 10% aqueous citric acid solution (3 mL)
9. extractionThe aqueous layer was back-extracted with DCM (2×2 mL)
10. dry with materialThe combined organic extracts were dried over Na2SO4
11. filtrationfiltered
12. concentrationthe filtrate was concentrated under reduced pressure
13. customThe crude product was purified by mass-triggered preparative LCMS