Multi-step reaction with 9 steps
1.1: potassium hydroxide / dimethyl sulfoxide / 1 h / 50 °C
1.2: 50 °C
2.1: water; potassium hydroxide / dimethyl sulfoxide / 80 - 85 °C
2.2: 50 - 60 °C
3.1: N-chloro-succinimide / N,N-dimethyl-formamide / 18 h / 22 °C
4.1: oxalyl dichloride; N,N-dimethyl-formamide / toluene / 1 h / 45 °C
5.1: N-ethyl-N,N-diisopropylamine / dichloromethane / Large scale reaction
5.2: 0 °C / Large scale reaction
6.1: hydrazine hydrate / ethanol; tert-butyl methyl ether / 16 h / 40 °C
6.2: 40 °C
7.1: dipotassium hydrogenphosphate / 2-methyltetrahydrofuran; water / 10 °C
8.1: tetrahydrofuran; methanol / 23 h / -5 °C / Inert atmosphere
9.1: 2-methyltetrahydrofuran; acetonitrile / 20 h / Reflux
With
dipotassium hydrogenphosphate; N-chloro-succinimide; oxalyl dichloride; water; hydrazine hydrate; N-ethyl-N,N-diisopropylamine; N,N-dimethyl-formamide; potassium hydroxide;
In
tetrahydrofuran; 2-methyltetrahydrofuran; methanol; ethanol; dichloromethane; tert-butyl methyl ether; water; dimethyl sulfoxide; N,N-dimethyl-formamide; toluene; acetonitrile;
7.1: Schotten-Baumann reaction;
DOI:10.1021/op100186c