Multi-step reaction with 7 steps
1: 100 percent / ethanol / 4 h / Heating
2: 62 percent / H2 / 10percent Pd/C / methanol
3: 62 percent / propan-2-ol / 16 h / 80 °C
4: 95 percent / aq. K2CO3 / methanol / 3 h / Heating
5: 1.) N-ethyl-N'-<3-(dimethylamino)propyl>carbodiimide hydrochloride, 1-hydroxybenzotriazole, Et3N / 1.) DMF, 30 min, 2.) DMF, RT, 3 h
6: 100 percent / 4N HCl / dioxane; methanol / 3 h / Ambient temperature
7: 1.) O-(1,2-dihydro-2-oxo-1-pyridyl)-N,N,N',N'-tetramethyluronium tetrafluoroborate, 2.) N-methylmorpholine / 1.) DMF, 15 min, 2.) DMF, 16 h
With
4-methyl-morpholine; hydrogenchloride; hydrogen; potassium carbonate; benzotriazol-1-ol; O-(1,2-dihydro-2-oxo-1-pyridyl)-N,N,N',N'-tetramethyluronium tetrafluoroborate; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride; triethylamine;
palladium on activated charcoal;
In
1,4-dioxane; methanol; ethanol; isopropyl alcohol;
DOI:10.1021/jm970873c