Multi-step reaction with 11 steps
1.1: sodium hydroxide / tetrahydrofuran; ethanol; water / 3 h / Reflux
2.1: oxalyl dichloride; N,N-dimethyl-formamide / tetrahydrofuran / 1 h / 20 °C
3.1: sodium tetrahydroborate / tetrahydrofuran; 1,2-dimethoxyethane / 1 h / 0 °C
4.1: thionyl chloride / toluene / 2 h / Reflux
5.1: N,N-dimethyl-formamide / 6 h / 20 °C
6.1: hydrazine hydrate / ethanol / 1 h / Reflux
7.1: tetrahydrofuran / 1 h / 20 °C
8.1: 5%-palladium/activated carbon; hydrogen / tetrahydrofuran; ethanol / 2 h / 20 °C
9.1: sodium hydride / N,N-dimethyl-formamide / 0.5 h / 0 °C
9.2: 6 h / 20 °C
10.1: 1,3-bis-(diphenylphosphino)propane; palladium diacetate; triethylamine / dimethyl sulfoxide / 15 h / 80 °C
11.1: sodium hydroxide / tetrahydrofuran; methanol / 2 h / 20 °C
With
sodium tetrahydroborate; thionyl chloride; oxalyl dichloride; 5%-palladium/activated carbon; 1,3-bis-(diphenylphosphino)propane; hydrogen; palladium diacetate; sodium hydride; hydrazine hydrate; triethylamine; N,N-dimethyl-formamide; sodium hydroxide;
In
tetrahydrofuran; methanol; 1,2-dimethoxyethane; ethanol; water; dimethyl sulfoxide; N,N-dimethyl-formamide; toluene;
DOI:10.1016/j.bmc.2011.06.059