Multi-step reaction with 12 steps
1.1: 89 percent / ammonium formate / Pd(OH)2/C / methanol / 16 h / Heating
2.1: 93 percent / triethylamine / CH2Cl2 / 36 h / 20 °C
3.1: 86 percent / pyridine / CH2Cl2 / 12 h / 0 - 20 °C
4.1: 93 percent / DMAP; imidazole / dimethylformamide / 12 h / 20 °C
5.1: 90 percent / NH3 / methanol / 24 h / 20 °C
6.1: pyridine; triflic anhydride / CH2Cl2 / 12 h / -30 - 20 °C
6.2: 93 percent / tetrahydrofuran / 12 h / 20 °C
7.1: 88 percent / tetrabutylammonium fluoride / tetrahydrofuran / 12 h / 20 °C
8.1: 87 percent / pyridine / CH2Cl2 / 12 h / 20 °C
9.1: aq. trifluoroacetic acid / 3 h / 20 °C
9.2: 93 percent / pyridine / 12 h / 20 °C
10.1: N,O-bis(trimethylsilyl)acetamide / acetonitrile / 1 h / Heating
10.2: 76 percent / TMS-triflate / acetonitrile / 3 h / Heating
11.1: 57 percent / NH3 / methanol / 1 h / 20 °C
12.1: 86 percent / DMAP; imidazole / dimethylformamide / 12 h / 36 °C
With
pyridine; 1H-imidazole; dmap; N,O-bis-(trimethylsilyl)-acetamide; trifluoromethylsulfonic anhydride; tetrabutyl ammonium fluoride; ammonia; ammonium formate; triethylamine; trifluoroacetic acid;
palladium dihydroxide;
In
tetrahydrofuran; methanol; dichloromethane; N,N-dimethyl-formamide; acetonitrile;
5.1: Zemplen O-debenzoylation;
DOI:10.1002/ejoc.200500023