Multi-step reaction with 8 steps
1: sodium metaperiodate / tetrahydrofuran; H2O / 0.25 h / Ambient temperature
2: 47 percent / K-selectride / tetrahydrofuran / 0.5 h / Ambient temperature
3: imidazole / dimethylformamide / Ambient temperature
4: tetraethylammonium fluoride dihydrate, acetic acid / tetrahydrofuran / 1 h / Ambient temperature
5: 1.) triethylamine, molecular sieves 4A / 1.) THF, room temperature; 2.) DMF, ice-cooling, 50 min
6: 98 percent / m-chloroperbenzoic acid, NaHCO3 / CH2Cl2 / 48 h / Ambient temperature
7: 2,6-lutidine, thionyl chloride / tetrahydrofuran / 0.5 h / -30 °C
8: 2,6-lutidine / tetrahydrofuran / Ambient temperature
With
1H-imidazole; 2,6-dimethylpyridine; sodium periodate; thionyl chloride; 4 A molecular sieve; tetraethylammonium fluoride; sodium hydrogencarbonate; potassium tri-sec-butyl-borohydride; acetic acid; triethylamine; 3-chloro-benzenecarboperoxoic acid;
In
tetrahydrofuran; dichloromethane; water; N,N-dimethyl-formamide;
DOI:10.1248/cpb.33.4382