Multi-step reaction with 9 steps
1: hydrogenchloride / 15 h / 20 °C
2: triethylamine; copper(l) iodide; bis-triphenylphosphine-palladium(II) chloride / N,N-dimethyl-formamide / 4 h / 80 °C
3: 1,8-diazabicyclo[5.4.0]undec-7-ene / N,N-dimethyl-formamide / 2 h / 20 - 100 °C
4: hydrogenchloride; sodium hydrogencarbonate / methanol / 3 h / 20 °C
5: carbon tetrabromide; triphenylphosphine / dichloromethane / 3.5 h / 0 - 20 °C
6: potassium carbonate / N,N-dimethyl-formamide / 15 h / 20 °C
7: water; lithium hydroxide monohydrate / methanol; tetrahydrofuran / 3 h / 20 °C
8: triethylamine; 1-hydroxy-7-aza-benzotriazole; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride / N,N-dimethyl-formamide / 0 °C
9: piperidine / N,N-dimethyl-formamide / 0.67 h / 20 °C
With
piperidine; hydrogenchloride; bis-triphenylphosphine-palladium(II) chloride; copper(l) iodide; 1-hydroxy-7-aza-benzotriazole; lithium hydroxide monohydrate; carbon tetrabromide; water; sodium hydrogencarbonate; potassium carbonate; 1,8-diazabicyclo[5.4.0]undec-7-ene; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride; triethylamine; triphenylphosphine;
In
tetrahydrofuran; methanol; dichloromethane; N,N-dimethyl-formamide;
DOI:10.1016/j.bmc.2014.02.002