Multi-step reaction with 8 steps
1: 93 percent / K2CO3 / dimethylformamide / 18 h / Ambient temperature
2: 1.) n-BuLi / 1.) THF, hexane, -70 deg C, 2.) THF, hexane, from -70 deg C to RT, 2.5 h
3: 100 percent / DMSO, oxalyl chloride / CH2Cl2 / 0.25 h / -55 - -50 °C
4: 91 percent / diethyl ether / 1 h / Ambient temperature
5: 1.) NaH / 1.) THF, 2.) THF, RT, 2 h
6: 76 percent / H2 / 30percent Pd/C / ethyl acetate
7: 94 percent / K2CO3 / acetone; toluene / 18 h / Heating
8: 36 percent / Et3N, (PPh3)2PdCl2, CuI / acetonitrile / 2 h / 55 - 60 °C
With
bis-triphenylphosphine-palladium(II) chloride; copper(l) iodide; n-butyllithium; oxalyl dichloride; hydrogen; sodium hydride; potassium carbonate; dimethyl sulfoxide; triethylamine;
palladium on activated charcoal;
In
diethyl ether; dichloromethane; ethyl acetate; N,N-dimethyl-formamide; acetone; toluene; acetonitrile;
DOI:10.1021/jm00111a038