Multi-step reaction with 8 steps
2: 1.) CeCl3*7H2O, NaBH4 / 1.) methanol, -78 deg C, 2.) 0 deg C, 30 min
3: 98 percent / pyridine / 12 h / Ambient temperature
4: 95 percent / triethylamine, tetrakis(triphenylphosphine)palladium(0) / tetrahydrofuran / 24 h / Heating
5: 72 percent / LiCl, LiOAc*2H2O, Pd(OAc)2, p-benzoquinone / acetone / 8 h
6: 89 percent / CuCN / diethyl ether / 4 h / 0 °C
7: 98 percent / 5percent aq. MeOH, K2CO3 / 24 h / Ambient temperature
8: 92 percent / imidazole / dimethylformamide / 3 h / 0 - 20 °C
With
pyridine; 1H-imidazole; methanol; palladium diacetate; sodium tetrahydroborate; tetrakis(triphenylphosphine) palladium(0); cerium(III) chloride; lithium acetate; potassium carbonate; triethylamine; p-benzoquinone; lithium chloride;
In
tetrahydrofuran; diethyl ether; N,N-dimethyl-formamide; acetone;
DOI:10.1021/jo00275a023