Multi-step reaction with 17 steps
1: 91.1 percent / p-toluenesulfonic acid / dimethylformamide / 2 h / 60 °C / 20 Torr
2: 71 percent / 50percent sodium hydride / dimethylformamide; paraffin / 16 h / 20 °C
3: 97.6 percent / aq. acetic acid / 6 h / 100 °C
4: 1.) bis(tri-n-butyltin)oxide; 2.) tetrabutylammonium bromide / 1.) toluene, 16 h, reflux; 2.) toluene, 100 deg C, 16 h
5: 94.5 percent / pyridine / 20 °C
6: 1.) palladium(II) chloride, sodium acetate; 2.) thionyl chloride, dimethylformamide / 1.) aq. acetic acid, 60 deg C, 14 h; 2.) dichloroethane, 20 deg C, 16 h
7: 68.1 percent / tetrabutylammonium chloride, N,N-diisopropylethylamine / 1,2-dichloro-ethane / 16 h / 80 - 90 °C
8: 65.5 percent / camphorsulfonic acid / methanol / 24 h / 20 °C
9: 98.3 percent / p-toluenesulfonic acid / dimethylformamide / 2 h / 40 °C / 20 Torr
10: 1 N sodium methoxide / methanol / 16 h / 20 °C
11: 92.5 percent / molecular sieves 4A, silver trifluoromethanesulfonate / 1,2-dichloro-ethane / 2 h
12: 93.5 percent / 1 N sodium methoxide / methanol / 16 h / 20 °C
13: 64.9 percent / 50percent sodium hydride / dimethylformamide; paraffin / 16 h / 20 °C
14: 87.2 percent / p-toluenesulfonic acid / methanol / 16 h / 20 °C
15: 63.6 percent / pyridine / 16 h / 0 - 5 °C
16: 89.5 percent / 4-dimethylaminopyridine / pyridine / 12 h / 20 °C
17: 87 percent / 0.5 N sodium methoxide / methanol; tetrahydrofuran / 6 h / 0 °C
With
pyridine; thionyl chloride; 4 A molecular sieve; camphor-10-sulfonic acid; tetrabutylammomium bromide; tetrabutyl-ammonium chloride; sodium methylate; sodium acetate; silver trifluoromethanesulfonate; sodium hydride; toluene-4-sulfonic acid; acetic acid; N-ethyl-N,N-diisopropylamine; N,N-dimethyl-formamide; bis(tri-n-butyltin)oxide; palladium dichloride;
dmap;
In
tetrahydrofuran; pyridine; methanol; 1,2-dichloro-ethane; N,N-dimethyl-formamide; paraffin;