Multi-step reaction with 7 steps
1: 1.) N-methylmorpholine, ethyl chloroformate, 2.) N-methylmorpholine / 1.) DMF, -20 deg C, 2 min, 2.) DMF, -20 deg C, then 0 deg C, 2 h, then overnight, room temperature
2: 97.3 percent / NaOH, water / ethanol / 1.5 h / Ambient temperature
3: 1.) N-methylmorpholine, ethyl chloroformate, 2.) N-methylmorpholine / 1.) DMF, -20 deg C, 2 min, 2.) DMF, -20 deg C, then 0 deg C, 2 h, then overnight, room temperature
4: HCl / acetic acid / 1 h / Ambient temperature
5: 84.7 percent / triethylamine / CHCl3 / 1.) 2 h, 2.) room temperature, overnight
6: 92.4 percent / hydrogen / 5 percent Pd/C / methanol; H2O / 6 h
7: 92.3 percent / pyridine / Ambient temperature
With
4-methyl-morpholine; pyridine; hydrogenchloride; sodium hydroxide; water; hydrogen; chloroformic acid ethyl ester; triethylamine;
palladium on activated charcoal;
In
methanol; ethanol; chloroform; water; acetic acid;