Multi-step reaction with 7 steps
1: 91 percent / BF3*Et2O / toluene / 40 h / 5 deg C - r.t.
2: 82 percent / H2, AcOH / 10percent Pd/C / methanol / 8 h / Ambient temperature
3: 60 percent / 1a) hexamethyldisilazane, 1b) chlorotrimethylsilane, 2) SnCl4 / acetonitrile / 1) r.t., 30 min, 2) 44 deg C, 16 h
4: 88 percent / NH3 / methanol / 12 h / Ambient temperature
5: 87.4 percent / 4-(dimethylamino)pyridine, pyridine, Et3N / 3 h / Ambient temperature
6: 78 percent / 4-(dimethylamino)pyridine, pyridine / 20 h / Ambient temperature
7: 82 percent / pyridine, N,N'-dicycohexylcarbodiimide / dioxane / 3 h / Ambient temperature
With
pyridine; dmap; chloro-trimethyl-silane; boron trifluoride diethyl etherate; ammonia; hydrogen; tin(IV) chloride; acetic acid; triethylamine; dicyclohexyl-carbodiimide; 1,1,1,3,3,3-hexamethyl-disilazane;
palladium on activated charcoal;
In
1,4-dioxane; methanol; toluene; acetonitrile;
DOI:10.1002/hlca.19920750503