Multi-step reaction with 7 steps
1: 98 percent / Et3N, 4-(dimethylamino)pyridine / dimethylformamide / 16 h / 45 °C
2: potassium carbonate / methanol / 1 h / Ambient temperature
3: 98 percent / Et3N, 4-(dimethylamino)pyridine / CH2Cl2 / 16 h / Ambient temperature
4: 1.) lithium diisopropylamide / 1.) THF, hexane, -78 deg C, 4 h, 2.) THF, hexane, RT, 14 h
5: 93 percent / tetrabutylammonium fluoride / tetrahydrofuran / 1 h / Ambient temperature
6: 1.) NaH / 1.) DMF, a) 0 deg C, 1 h, b) RT, 4 h, 2.) DMF, RT, 14 h
7: 95 percent / cyclohexene / 10percent Pd(OH)2/C / ethanol / 0.75 h / Heating
With
dmap; tetrabutyl ammonium fluoride; sodium hydride; potassium carbonate; triethylamine; lithium diisopropyl amide; cyclohexene;
palladium dihydroxide;
In
tetrahydrofuran; methanol; ethanol; dichloromethane; N,N-dimethyl-formamide;
DOI:10.1021/jm00094a005