Multi-step reaction with 8 steps
1.1: triethylamine / dioxane; H2O / 20 h / 20 °C
1.2: 100 percent / p-TsOH / acetone / 6 h / 20 °C
2.1: 66 percent / PyBop; i-Pr2NEt / CH2Cl2 / 2.5 h / 20 °C
3.1: 94 percent / dimethylformamide / 2 h / 80 °C
4.1: 4-(4,6-dimethoxy-1,3,5-triazin-2-yl)-4-methylmorpholinium; chloride; N-methylmorpholine / methanol / 6 h / 20 °C
4.2: 82 percent / aq. NaOH / methanol; dioxane; H2O / 1 h / 20 °C
5.1: 83 percent / 2-chloro-1,3-dimethylimidazolidium hexafluorophosphate; 1-hydroxy-7-azabenzotriazole; i-Pr2NEt / CH2Cl2 / 0.5 h / 20 °C
6.1: 85 percent / diethylamminosulfur trifluoride / CH2Cl2 / 0.08 h / -78 °C
7.1: 90 percent / H2S / methanol; triethylamine / 6 h / 20 °C
8.1: 100 percent / aq. NaOH / ethanol; dioxane / 5 h / 20 °C
With
4-methyl-morpholine; sodium hydroxide; 1-hydroxy-7-aza-benzotriazole; diethylamino-sulfur trifluoride; 2-chloro-1,3-dimethylimidazolidium hexafluorophosphate; hydrogen sulfide; benzotriazol-1-yloxyl-tris-(pyrrolidino)-phosphonium hexafluorophosphate; chloride; 4-(4,6-dimethoxy-1,3,5-triazin-2-yl)-4-methylmorpholin-4-ium; triethylamine; N-ethyl-N,N-diisopropylamine;
In
1,4-dioxane; methanol; ethanol; dichloromethane; water; triethylamine; N,N-dimethyl-formamide;
DOI:10.1016/j.tetlet.2004.03.099