Multi-step reaction with 13 steps
1.1: 64 percent / SO2Cl2 / 5 h / 0 °C
2.1: 100 percent / pyridine*HBr3; pyridine / CHCl3 / 3 h / 0 °C
3.1: 50 percent / LiClO4 / Electrochemical reaction
4.1: 70 percent / Zn; AcOH / tetrahydrofuran / 0 °C
5.1: 100 percent / DIPEA / CH2Cl2
6.1: 100 percent / K2CO3; MeOH / 20 °C
7.1: 100 percent / imidazole / dimethylformamide / 6 h
8.1: n-BuLi / tetrahydrofuran; hexane / 0.05 h / -78 °C
8.2: B(OMe)3 / tetrahydrofuran; hexane / 2 h
8.3: 14 percent / H2O2; NaOH / tetrahydrofuran; hexane; H2O / 0 °C
9.1: 92 percent / HCO2NH4 / Pd/C / ethanol / 5 h / 60 °C
10.1: 86 percent / TBAF / tetrahydrofuran / 3 h / 0 °C
11.1: 84 percent / Et3N; SO3*pyridine; DMSO / CH2Cl2 / 2 h / 20 °C
12.1: 82 percent / PDC / dimethylformamide / 20 °C
13.1: 60 percent / Et3N; HOBt; 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide / CH2Cl2 / 20 °C
With
pyridine; 1H-imidazole; methanol; dipyridinium dichromate; n-butyllithium; sulfuryl dichloride; pyridinium perbromide hydrobromide; pyridine-SO3 complex; tetrabutyl ammonium fluoride; ammonium formate; lithium perchlorate; potassium carbonate; benzotriazol-1-ol; acetic acid; dimethyl sulfoxide; N-(3-dimethylaminopropyl)-N-ethylcarbodiimide; triethylamine; N-ethyl-N,N-diisopropylamine; zinc;
palladium on activated charcoal;
In
tetrahydrofuran; ethanol; hexane; dichloromethane; chloroform; N,N-dimethyl-formamide;
DOI:10.1016/j.bmc.2005.11.055