Multi-step reaction with 10 steps
1.1: N-ethyl-N,N-diisopropylamine / dichloromethane / 6 h / 0 - 20 °C / Inert atmosphere
2.1: sodium hydroxide / tetrahydrofuran; water / Inert atmosphere
3.1: tetrahydrofuran / 1 h / 0 °C / Inert atmosphere
4.1: sodium tetrahydroborate / tetrahydrofuran; water / 0.5 h / 0 °C / Inert atmosphere
5.1: oxalyl dichloride; dimethyl sulfoxide / dichloromethane / 1 h / -78 °C / Inert atmosphere
5.2: 0.5 h / Inert atmosphere
6.1: magnesium; iodine / diethyl ether / 0.5 h / Inert atmosphere; Reflux
6.2: 20 °C / Inert atmosphere
7.1: pyridinium chlorochromate / dichloromethane / Inert atmosphere
8.1: n-butyllithium / tetrahydrofuran; hexane / 0.5 h / -78 - -10 °C / Inert atmosphere
8.2: 0.5 h / -78 °C / Inert atmosphere
9.1: thionyl chloride / tetrahydrofuran; hexane / 0.5 h / -78 - 0 °C / Inert atmosphere
9.2: 24 h
10.1: trifluoroacetic acid / dichloromethane / 4 h / Inert atmosphere
10.2: 1 h / Inert atmosphere
With
sodium tetrahydroborate; n-butyllithium; thionyl chloride; oxalyl dichloride; iodine; magnesium; dimethyl sulfoxide; N-ethyl-N,N-diisopropylamine; pyridinium chlorochromate; trifluoroacetic acid; sodium hydroxide;
In
tetrahydrofuran; diethyl ether; hexane; dichloromethane; water;
DOI:10.1021/acs.jmedchem.6b01592