Multi-step reaction with 11 steps
1.1: methanol; sodium tetrahydroborate / 1 h / 0 °C
2.1: 1H-imidazole / N,N-dimethyl-formamide / 4 h
3.1: n-butyllithium / tetrahydrofuran; hexane / 0.08 h / -78 °C
3.2: 0.75 h / -78 °C
4.1: hydroxylamine hydrochloride; triethylamine / dichloromethane / 2 h / 20 °C
5.1: dicyclohexyl-carbodiimide / toluene / 16 h / 90 °C
6.1: hydroxylamine / ethanol; water / 1 h / 60 °C
7.1: N-ethyl-N,N-diisopropylamine / dichloromethane / 1 h / 0 °C
8.1: tetrabutyl ammonium fluoride / tetrahydrofuran / 3 h / 60 °C
9.1: carbon tetrabromide; triphenylphosphine / dichloromethane / 1 h / 0 °C
10.1: N-ethyl-N,N-diisopropylamine / dichloromethane / 2 h / 0 - 20 °C
11.1: lithium hydroxide; water / tetrahydrofuran; methanol / 1 h / 20 °C
11.3: 0.5 h
With
1H-imidazole; methanol; lithium hydroxide; sodium tetrahydroborate; n-butyllithium; carbon tetrabromide; hydroxylamine hydrochloride; tetrabutyl ammonium fluoride; water; hydroxylamine; triethylamine; N-ethyl-N,N-diisopropylamine; dicyclohexyl-carbodiimide; triphenylphosphine;
In
tetrahydrofuran; methanol; ethanol; hexane; dichloromethane; water; N,N-dimethyl-formamide; toluene;