Multi-step reaction with 5 steps
1: 97 percent / n-BuLi, TMEDA / tetrahydrofuran; hexane / -30 °C
2: 1) DMSO, trifluoroacetic anhydride, 2) triethylamine / 1) dichloromethane, -65 - -60 deg C, 30 min, 2) dichloromethane, -60 deg C, 5 min
3: 99 percent / sodium hydroxide, tetra-n-butylamonium bromide / CH2Cl2; H2O / 18 h / 23 °C
4: 86 percent / 1,3,5-trimethyl-benzene / 3.5 h / 165 °C
5: 89 percent / n-BuLi, diisopropylamine / hexane; tetrahydrofuran / 1.) 30 min, -20 deg C, 2.) 5 h, r.t.
With
sodium hydroxide; n-butyllithium; N,N,N,N,-tetramethylethylenediamine; tetrabutylammomium bromide; dimethyl sulfoxide; triethylamine; diisopropylamine; trifluoroacetic anhydride;
In
tetrahydrofuran; hexane; dichloromethane; water; 1,3,5-trimethyl-benzene;