反应条件
1: 101 g / diethyl ether; tetrahydrofuran / 4 h / -5 °C 2: Na / diethyl ether / 1.5 h / Heating 3: pyridinium chlorochromate / CH2Cl2 / 1.25 h / Heating 4: 3-(2-ethoxyethyl)-5-(2-hydroxyethyl)-4-methyl-1,3-thiazolium bromide / triethylamine; dioxane / 15 h / 87 °C 5: 1.) NaOH, 2.) NaBH4 / 1.) EtOH-H2O, reflux, 0.5 h, 2.) 2 h 6: 0.5 g / 110 deg C; -> 145 deg C, 20 min; 145 deg C, 10 min 7: H2 / 10percent Pd/C / hexane / 1 h / 16 °C View Scheme
参考文献
Synthetic Communications, , vol. 14, # 1 p. 53 - 64
