Multi-step reaction with 12 steps
1: 87 percent
2: 62 percent / HCl / 1.5 h / 100 °C
3: 82 percent / TsOH / dimethylformamide / 5 h / Ambient temperature
4: 94 percent / 4-dimethylaminopyridine / pyridine / 11 h / Ambient temperature
5: 83 percent / acetic acid / 0.25 h / 90 °C
6: 77 percent / pyridine / CH2Cl2 / 7 h / 0 °C
7: 83 percent / trifluoromeyhanesulfonic acid / CH2Cl2 / 48 h / Ambient temperature
8: 57 percent / NH4OH / methanol; H2O
9: 80 percent / FeCl3, N,N,N',N'-tetramethylurea, Molecular Sieves 4A / CH2Cl2 / 48 h / Ambient temperature
10: 76 percent / NH4OH / methanol; H2O
11: 69 percent / TsOH / dimethylformamide / 5 h / Ambient temperature
12: 95 percent / thiourea, diisopropylethylamine / tetrahydrofuran / 5 h / Heating
With
pyridine; hydrogenchloride; dmap; ammonium hydroxide; trifluorormethanesulfonic acid; 4 A molecular sieve; iron(III) chloride; toluene-4-sulfonic acid; acetic acid; N-ethyl-N,N-diisopropylamine; thiourea; tetramethylurea;
In
tetrahydrofuran; pyridine; methanol; dichloromethane; water; N,N-dimethyl-formamide;