Multi-step reaction with 5 steps
1: 98 percent / H2, Et3N / Pd/C / ethyl acetate
2: 62 percent / SmI2, hexamethylphosphoramide / tetrahydrofuran; ethane-1,2-diol / 1 h / Ambient temperature
3: 90 percent / 1 N HCl / tetrahydrofuran / 4 h / Heating
4: 1.) dibutyltin oxide, 2.) CsF / 1.) CHCl3, MeOH, reflux, 3 h, 2.) a) CHCl3, MeOH, overnight, b) DMF, RT, 48 h
5: 97 percent / pyridine, DMAP / CH2Cl2 / 3 h / Ambient temperature
With
pyridine; hydrogenchloride; N,N,N,N,N,N-hexamethylphosphoric triamide; dmap; samarium diiodide; hydrogen; di(n-butyl)tin oxide; triethylamine; cesium fluoride;
palladium on activated charcoal;
In
tetrahydrofuran; dichloromethane; ethylene glycol; ethyl acetate;
DOI:10.1021/jm960525v