Multi-step reaction with 6 steps
1: 1.) NaNH2 / 1) benzene, rt, 3 h; 2) benzene, rt, 2 h
2: aq. KOH / ethanol / 15 h / Heating
3: 1.) BuLi / 1) THF, hexane, 0 - -78 deg C; 2) THF, hexane, -78 deg C, 2 h
4: 1.) oxalyl chloride, DMSO, 2.) Et3N / 1) CH2Cl2, -78 deg C, 2 h; 2) CH2Cl2, -78 deg C, 1 h
5: tetrahydrofuran / 2 h / -20 °C
6: NaN3, Ph3P, CBr4 / dimethylformamide / 3 h / Ambient temperature
With
potassium hydroxide; n-butyllithium; sodium azide; oxalyl dichloride; carbon tetrabromide; sodium amide; dimethyl sulfoxide; triethylamine; triphenylphosphine;
In
tetrahydrofuran; ethanol; N,N-dimethyl-formamide;
DOI:10.1021/jo9518056