Multi-step reaction with 9 steps
1.1: tetrahydrofuran / 2 h / 20 °C / Inert atmosphere
2.1: 5 h / 100 °C / Inert atmosphere
3.1: toluene / 3 h / Inert atmosphere; Dean-Stark; Reflux
3.2: 5 h / Inert atmosphere; Dean-Stark; Reflux
4.1: sodium acetate; acetic acid; bromine / 4 h / 45 °C / Inert atmosphere
5.1: sodium azide / N,N-dimethyl-formamide / 5 h / 45 °C / Inert atmosphere
6.1: zinc; ammonium chloride / ethyl acetate; methanol / 0.5 h / 20 - 60 °C / Inert atmosphere
7.1: O,O'-dibenzoyl-L-tartaric acid / isopropyl alcohol / 18 h / 20 - 85 °C / Inert atmosphere
8.1: sodium tris(acetoxy)borohydride / 1,2-dichloro-ethane / 6 h / 20 °C / Inert atmosphere
9.1: N-ethyl-N,N-diisopropylamine / dichloromethane / 24 h / 20 °C
With
sodium azide; bromine; sodium acetate; sodium tris(acetoxy)borohydride; ammonium chloride; acetic acid; N-ethyl-N,N-diisopropylamine; O,O'-dibenzoyl-L-tartaric acid; zinc;
In
tetrahydrofuran; methanol; dichloromethane; ethyl acetate; 1,2-dichloro-ethane; N,N-dimethyl-formamide; isopropyl alcohol; toluene;
DOI:10.1016/j.bmc.2012.11.013