Multi-step reaction with 13 steps
1: 93 percent / HCl / ethyl acetate / 1 h / 0 °C
2: N-methylmorpholine / tetrahydrofuran / 2 h / Ambient temperature
3: 91 percent / H2 / 5percent Pd/C / methanol; acetic acid / 21 h
4: N-methylmorpholine / tetrahydrofuran / 0.17 h / -15 °C
5: N-methylmorpholine / tetrahydrofuran / 2 h / Ambient temperature
6: 95 percent / H2 / 5percent Pd/C / methanol / 12 h
7: N-methylmorpholine / tetrahydrofuran / 0.17 h / -15 °C
8: N-methylmorpholine / tetrahydrofuran / 2 h / Ambient temperature
9: 82 percent / H2 / 5percent Pd/C / methanol / 18 h
10: N-methylmorpholine / tetrahydrofuran / 0.17 h / -15 °C
11: N-methylmorpholine / tetrahydrofuran / 2 h / Ambient temperature
12: 95 percent / H2 / 5percent Pd/C / methanol; acetic acid / 18 h
13: 91 percent / EDCI / CH2Cl2 / 1.) 0 deg C, 1 h, 2.) r.t., 24 h
With
4-methyl-morpholine; hydrogenchloride; hydrogen; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride;
palladium on activated charcoal;
In
tetrahydrofuran; methanol; dichloromethane; acetic acid; ethyl acetate;
DOI:10.1039/a702410j