Multi-step reaction with 8 steps
1: 80 percent / hexamethylphosphoric acid triamide; tetrahydrofuran / 1 h / -78 °C
2: 88 percent / CH3I, 5percent HCl / 0.5 h / Ambient temperature
3: 87 percent / tetrahydrofuran / 2 h / -78 °C
4: 98 percent / CBr4, Ph3P / tetrahydrofuran / 0.25 h / Ambient temperature
5: 40 percent / LiBr / dimethylformamide / 80 °C
6: 89 percent / 1) AgNO3; 2) KCN / ethanol; H2O / Ambient temperature; 1) 20 min; 2) 20 min
7: 85 percent / palladium acetate, N,N'-dibenzylideneethylenediamine / benzene / 1 h / 65 °C
8: 70 percent / LICA / tetrahydrofuran / 1 h / -78 - -20 °C
With
hydrogenchloride; potassium cyanide; carbon tetrabromide; lithium cyclohexylisopropylamide; silver nitrate; triphenylphosphine; lithium bromide; methyl iodide;
N,N'-bis(benzyliden)ethylendiamine; palladium diacetate;
In
tetrahydrofuran; N,N,N,N,N,N-hexamethylphosphoric triamide; ethanol; water; N,N-dimethyl-formamide; benzene;
DOI:10.1021/ja00223a075