Multi-step reaction with 7 steps
1: 1.4 g / 4-(dimethylamino)pyridine / pyridine / 16 h / 20 °C
2: conc. H2SO4 / acetic acid / 96 h / 20 °C
3: 80 percent / hexamethyldisilazane, chlorotrimethylsilane, tin tetrachloride / acetonitrile / 16 h / 20 °C
4: 61 percent / NEt3 / methanol / 20 h / 20 °C
6: 32 percent / 2-cyanoethyl pyridinium phosphate, 2,4,6-triisopropylbenzenesulfonyl chloride / 3 h / 20 °C
7: 40 percent / tributylamine, 1,1'-carbonyldiimidazole, tributylammonium pyrophosphate / H2O; dimethylformamide / 16 h / 20 °C
With
dmap; chloro-trimethyl-silane; 2,4,6-triisopropylphenylsulfonyl chloride; tributyl-amine; 2-cyanoethyl pyridinium phosphate; sulfuric acid; tin(IV) chloride; tri(n-butyl)ammonium pyrophosphate; triethylamine; 1,1,1,3,3,3-hexamethyl-disilazane; 1,1'-carbonyldiimidazole;
In
pyridine; methanol; water; acetic acid; N,N-dimethyl-formamide; acetonitrile;
DOI:10.1016/0008-6215(83)88357-8