Multi-step reaction with 13 steps
1.1: potassium carbonate / methanol / 2 h / 0 °C
2.1: sodium hydride / tetrahydrofuran; mineral oil / 1 h / 0 °C
2.2: 0 - 20 °C
3.1: copper(I) bromide / tetrahydrofuran; diethyl ether / 0 °C
4.1: N-ethyl-N,N-diisopropylamine / dichloromethane / 8 h / 0 - 20 °C
5.1: ozone / dichloromethane / -78 °C / Inert atmosphere
6.1: benzene / 2 h / 20 °C
7.1: diisobutylaluminium hydride / dichloromethane; toluene / 20 °C / Cooling
8.1: titanium(IV) isopropylate; D-(-)-diisopropyl tartrate / dichloromethane / 0.5 h / -20 °C / Molecular sieve
8.2: 3 h / -20 °C
9.1: sodium bis(2-methoxyethoxy)aluminium dihydride / tetrahydrofuran; toluene / 2.5 h / 0 °C
10.1: pyridinium p-toluenesulfonate / dichloromethane / 0 °C
11.1: diisobutylaluminium hydride / dichloromethane; toluene / 2 h / -20 °C
12.1: Dess-Martin periodane / dichloromethane / 1 h / 0 - 20 °C
13.1: titanium tetrachloride / dichloromethane / 0.08 h / 0 °C
13.2: 0.5 h
13.3: 1 h / -78 - 0 °C
With
titanium(IV) isopropylate; pyridinium p-toluenesulfonate; titanium tetrachloride; sodium hydride; diisobutylaluminium hydride; potassium carbonate; D-(-)-diisopropyl tartrate; Dess-Martin periodane; ozone; N-ethyl-N,N-diisopropylamine; sodium bis(2-methoxyethoxy)aluminium dihydride; copper(I) bromide;
In
tetrahydrofuran; methanol; diethyl ether; dichloromethane; toluene; mineral oil; benzene;
6.1: |Wittig Olefination / 8.1: |Sharpless Asymmetric Epoxidation / 13.2: |Evans Aldol Reaction;
DOI:10.1039/c4ob00323c