Multi-step reaction with 11 steps
1: 91 percent / imidazole; 4-(dimethylamino)pyridine / dimethylformamide / 4 h / 20 °C
2: 74 percent / Ph3P; DIAD / toluene / 6 h / 20 °C
3: 88 percent / MeONa / methanol / 0.5 h / 20 °C
4: 49 percent / 2,6-di-tert-butyl-4-methylpyridine / CH2Cl2 / 12 h / 20 °C
5: 90 percent / tetra-n-butylammonium fluoride / tetrahydrofuran / 2 h / 20 °C
6: 100 percent / H2O / Heating
7: 84 percent / K2CO3 / methanol / 20 °C
8: 100 percent / pyridine / 20 °C
9: 100 percent / tetra-n-butylammonium fluoride / tetrahydrofuran / 20 °C
10: 62 percent / 2,4,6-triisopropylbenzenesulfonyl chloride; pyridine / 1 h / 20 °C
11: 88 percent / aq. AcOH / 4 h / 20 °C
With
pyridine; 1H-imidazole; dmap; 2,4,6-triisopropylphenylsulfonyl chloride; 2,6-di-tert-butyl-4-methylpyridine; di-isopropyl azodicarboxylate; tetrabutyl ammonium fluoride; water; sodium methylate; potassium carbonate; acetic acid; triphenylphosphine;
In
tetrahydrofuran; methanol; dichloromethane; N,N-dimethyl-formamide; toluene;
2: Mitsunobu reaction;
DOI:10.1080/15257770600685867