Multi-step reaction with 7 steps
1.1: N,N,N,N,-tetramethylethylenediamine; n-butyllithium / hexane; tetrahydrofuran / 4 h / -40 - -33 °C
1.2: 17 h / -35 - 20 °C
2.1: sulfuric acid / Reflux
3.1: N,N-dimethyl-formamide / 2 h / 20 °C
4.1: sodium hydroxide; water / methanol / 20 °C
4.2: 0.08 h
5.1: oxalyl dichloride / N,N-dimethyl-formamide / dichloromethane / 0.17 h / Reflux
6.1: triethylamine / dmap / dichloromethane / 16 h / 20 °C
7.1: 3-chloro-benzenecarboperoxoic acid / dichloromethane / 20 °C
With
n-butyllithium; oxalyl dichloride; N,N,N,N,-tetramethylethylenediamine; sulfuric acid; water; triethylamine; 3-chloro-benzenecarboperoxoic acid; sodium hydroxide;
dmap; N,N-dimethyl-formamide;
In
tetrahydrofuran; methanol; hexane; dichloromethane; N,N-dimethyl-formamide;