Multi-step reaction with 8 steps
1: methanol / 2 h / Heating
2: NaBH4 / methanol / 2 h / Ambient temperature
3: 2.) TFA / 1.) CHCl3, RT, 30 min, 2.) CHCl3, RT, 1 h
4: 1.) NaH / 1.) DMF, from -50 deg C to -40 deg C, 3 h, 2.) DMF, 1 h
5: 100 percent / H2, conc. HCl / 10percent Pd/C / methanol / 24 h / 3677.5 Torr
6: 96 percent / tetrahydrofuran / 2 h
7: 1.) LDA / 1.) THF, hexane, -78 deg C, 2 h, 2.) THF, hexane, -78 deg C, 30 min
8: TEA / CH2Cl2 / 1 h / Ambient temperature
With
hydrogenchloride; sodium tetrahydroborate; TEA; hydrogen; sodium hydride; trifluoroacetic acid; lithium diisopropyl amide;
palladium on activated charcoal;
In
tetrahydrofuran; methanol; dichloromethane;
DOI:10.1248/cpb.44.900