Multi-step reaction with 9 steps
1: 10percent aq. citric acid / tetrahydrofuran / 48 h
2: 99 percent / Et3N / tetrahydrofuran / 2 h / Ambient temperature
3: 55 percent / 0.5 N aq. LiOH / tetrahydrofuran / 4 h / Ambient temperature
4: 1.) DIEA, (benzotriazol-1-yloxy)tris(dimethylamino)phosphonium hexafluorophosphate, 2.) DIEA / 1.) DMF, 0 deg C, 30 min, 2.) DMF, RT, overnight
5: 100 percent / H2 / 10percent Pd/C / methanol / Ambient temperature
6: 1.) DIEA, (benzotriazol-1-yloxy)tris(dimethylamino)phosphonium hexafluorophosphate, 2.) DIEA / 1.) DMF, 0 deg C, 30 min, 2.) DMF, RT, overnight
7: 100 percent / anisole / CH2Cl2 / 3 h / 0 - 20 °C
8: 29 percent / NaHCO3, (benzotriazol-1-yloxy)tris(dimethylamino)phosphonium hexafluorophosphate / dimethylformamide / 5.5 h / 0 - 20 °C
9: 81 percent / HF, anisole / 1.25 h / 0 °C
With
lithium hydroxide; hydrogen fluoride; hydrogen; sodium hydrogencarbonate; (benzotriazo-1-yloxy)tris(dimethylamino)phosphonium hexafluorophosphate; methoxybenzene; triethylamine; N-ethyl-N,N-diisopropylamine; citric acid;
palladium on activated charcoal;
In
tetrahydrofuran; methanol; dichloromethane; N,N-dimethyl-formamide;
DOI:10.1021/jm9603072