Multi-step reaction with 6 steps
1: 1.) NaH / 1.) DMA, 1 h, 2.) DMA, RT, overnight
2: 1.) n-BuLi / 1.) THF, hexane, -70 deg C, 1 h, 2.) THF, hexane, from -70 to 0 deg C, 3 h
3: 1.) NaH / 1.) DMF, 5 deg C, 1 h, 2.) DMF, from 5 deg C to RT, overnight
4: 95 percent / H2 / 10percent Pd/C / ethanol / 2 h
5: 64 percent / K2CO3 / dimethylformamide / Ambient temperature
6: 40 percent / sodium formate, (PPh3)4Pd / dimethylformamide / 6 h / 100 °C
With
tetrakis(triphenylphosphine) palladium(0); n-butyllithium; hydrogen; sodium formate; sodium hydride; potassium carbonate;
palladium on activated charcoal;
In
ethanol; N,N-dimethyl-formamide;
DOI:10.1021/jm00092a010