Multi-step reaction with 16 steps
1.1: 2,6-dimethylpyridine / tetrahydrofuran; N,N-dimethyl-formamide / 2 h / 20 °C / Cooling with ice; Inert atmosphere
2.1: potassium tert-butylate / tetrahydrofuran; N,N-dimethyl-formamide / 1.5 h / 20 °C / Cooling with ice; Inert atmosphere
3.1: tetrabutyl ammonium fluoride / tetrahydrofuran / 0.42 h / 20 °C / Inert atmosphere
4.1: triethylamine / dichloromethane / 20 °C / Cooling with ice; Inert atmosphere
5.1: diisobutylaluminium hydride / dichloromethane; toluene / 0.92 h / -78 °C / Inert atmosphere
6.1: tetrapropylammonium perruthennate; 4-methylmorpholine N-oxide / dichloromethane / 0.33 h / 20 °C / Inert atmosphere; Molecular sieve
7.1: toluene / 0.33 h / 20 °C / Inert atmosphere
8.1: acetic acid; zinc / dichloromethane / 0.42 h / 0 - 20 °C / Inert atmosphere
9.1: acetic anhydride / 2 h / 50 °C / Inert atmosphere
9.2: 0.25 h / 0 °C / Inert atmosphere
9.3: 1 h / Cooling with ice; Inert atmosphere
10.1: 2,2'-azobis(isobutyronitrile); tri-n-butyl-tin hydride / acetonitrile / 0.5 h / Inert atmosphere; Reflux
10.2: 20 °C / Inert atmosphere
11.1: diisobutylaluminium hydride / dichloromethane; toluene / -78 - 0 °C / Inert atmosphere
12.1: camphor-10-sulfonic acid / dichloromethane / 1.33 h / 20 °C / Inert atmosphere
13.1: dmap / acetonitrile / 0 - 20 °C / Inert atmosphere
14.1: copper(l) iodide; trans-benzyl(chloro)-bis(triphenylphosphine)palladium(II); trifuran-2-yl-phosphane / N,N,N,N,N,N-hexamethylphosphoric triamide; N,N-dimethyl-formamide / 10 h / 20 - 80 °C / Inert atmosphere
15.1: camphor-10-sulfonic acid / methanol / 1 h / 20 °C / Inert atmosphere
16.1: triphenylphosphine; diethylazodicarboxylate / toluene; benzene / 1 h / 0 - 20 °C / Inert atmosphere
With
2,6-dimethylpyridine; dmap; copper(l) iodide; tetrapropylammonium perruthennate; trans-benzyl(chloro)-bis(triphenylphosphine)palladium(II); trifuran-2-yl-phosphane; 2,2'-azobis(isobutyronitrile); camphor-10-sulfonic acid; potassium tert-butylate; tetrabutyl ammonium fluoride; tri-n-butyl-tin hydride; acetic anhydride; diisobutylaluminium hydride; acetic acid; 4-methylmorpholine N-oxide; triethylamine; triphenylphosphine; zinc; diethylazodicarboxylate;
In
tetrahydrofuran; methanol; N,N,N,N,N,N-hexamethylphosphoric triamide; dichloromethane; N,N-dimethyl-formamide; toluene; acetonitrile; benzene;
7.1: Wittig reaction / 14.1: Stille coupling / 16.1: Mitsunobu reaction;
DOI:10.1002/anie.201100981