Multi-step reaction with 20 steps
1.1: ammonia borane / tetrahydrofuran / Inert atmosphere
2.1: tetra-(n-butyl)ammonium iodide; sodium hydride / tetrahydrofuran / Inert atmosphere
3.1: ammonium cerium (IV) nitrate; water / acetonitrile / 0 °C / Inert atmosphere
4.1: pyridine; Dess-Martin periodane / dichloromethane / Inert atmosphere
5.1: n-butyllithium; diisopropylamine / tetrahydrofuran; diethyl ether / 0.5 h / -78 °C / Inert atmosphere
5.2: -78 - 20 °C / Inert atmosphere
6.1: n-butyllithium / tetrahydrofuran; hexane / 0.58 h / -78 - 0 °C / Inert atmosphere
6.2: 1.08 h / -78 - 0 °C / Inert atmosphere
7.1: (1S,2S)-(+)-N-tosyl-1,2-diphenylethane-1,2-diamine[η6-1-isopropyl-4-methylbenzene]-ruthenium(II) / isopropyl alcohol / 5 h / 20 °C / Inert atmosphere
8.1: diisobutylaluminium hydride / dichloromethane / Inert atmosphere
9.1: Wilkinson's catalyst; hydrogen / benzene / 3000.3 Torr
10.1: 2,6-dimethylpyridine / dichloromethane / Inert atmosphere
11.1: hydrogen / ethanol
12.1: tetrapropylammonium perruthennate; 4-methylmorpholine N-oxide / dichloromethane / Inert atmosphere
13.1: diethylzinc; palladium diacetate; triphenylphosphine / tetrahydrofuran; hexane / -78 - -20 °C / Inert atmosphere
14.1: 2,6-dimethylpyridine / dichloromethane / 1.5 h / 0 °C / Inert atmosphere
15.1: n-butyllithium / hexane / 1 h / -50 °C / Inert atmosphere
15.2: 1 h / -50 - 20 °C / Inert atmosphere
16.1: 2-nitrobenzenesulfonyl hydrazide; triethylamine / tetrahydrofuran; isopropyl alcohol / 24 h / 20 °C / Inert atmosphere
17.1: pyridine; pyridine hydrogenfluoride / tetrahydrofuran / 0 - 20 °C / Inert atmosphere
18.1: pyridine; Dess-Martin periodane / dichloromethane / 0 - 20 °C / Inert atmosphere
19.1: chromium dichloride / tetrahydrofuran / 0 - 20 °C / Inert atmosphere
20.1: potassium hydroxide / methanol; water / 0 - 20 °C / Inert atmosphere
With
pyridine; 2,6-dimethylpyridine; chromium dichloride; Wilkinson's catalyst; (1S,2S)-(+)-N-tosyl-1,2-diphenylethane-1,2-diamine[η6-1-isopropyl-4-methylbenzene]-ruthenium(II); n-butyllithium; ammonium cerium (IV) nitrate; tetrapropylammonium perruthennate; ammonia borane; 2-nitrobenzenesulfonyl hydrazide; water; hydrogen; diethylzinc; palladium diacetate; tetra-(n-butyl)ammonium iodide; sodium hydride; diisobutylaluminium hydride; Dess-Martin periodane; pyridine hydrogenfluoride; 4-methylmorpholine N-oxide; triethylamine; diisopropylamine; triphenylphosphine; potassium hydroxide;
In
tetrahydrofuran; methanol; diethyl ether; ethanol; hexane; dichloromethane; water; isopropyl alcohol; acetonitrile; benzene;
4.1: Dess-Martin oxidation / 5.1: Shioiri alkynylation / 5.2: Shioiri alkynylation / 13.1: Marshall-Tamaru addition / 18.1: Dess-Martin oxidation / 19.1: Nozaki-Hiyama-Kishi coupling / 20.1: Peterson olefination;
DOI:10.1002/ejoc.201100244