Technology Process of (3R,4S,5S)-3,5-Dihydroxy-4-(4-hydroxy-phenyl)-piperidine-1-carboxylic acid tert-butyl ester
There total 9 articles about (3R,4S,5S)-3,5-Dihydroxy-4-(4-hydroxy-phenyl)-piperidine-1-carboxylic acid tert-butyl ester which
guide to synthetic route it.
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synthetic route:
- Guidance literature:
-
Multi-step reaction with 9 steps
1: aq. HBr / toluene / Ambient temperature
2: NaBr, Br2 / H2O; dioxane
3: aq. NaOH / dioxane / 0 - 20 °C
4: BuLi / tetrahydrofuran / Heating
5: NaH / tetrahydrofuran / 20 - 35 °C
6: 1.) NaBH4, BF3*Et2O, 2.) aq. KOH, 3.) 30 percent aq. H2O2
7: 91 percent / BBr3 / CH2Cl2 / 40 °C
8: 97 percent / H2 / Pd/C / methanol / Ambient temperature
9: 91 percent / NaHCO3 / H2O; dioxane / Ambient temperature
With
potassium hydroxide; sodium hydroxide; sodium tetrahydroborate; n-butyllithium; boron trifluoride diethyl etherate; hydrogen bromide; hydrogen; dihydrogen peroxide; bromine; boron tribromide; sodium hydride; sodium hydrogencarbonate; sodium bromide;
palladium on activated charcoal;
In
tetrahydrofuran; 1,4-dioxane; methanol; dichloromethane; water; toluene;
DOI:10.1016/S0960-894X(99)00196-1
- Guidance literature:
-
Multi-step reaction with 8 steps
1: NaBr, Br2 / H2O; dioxane
2: aq. NaOH / dioxane / 0 - 20 °C
3: BuLi / tetrahydrofuran / Heating
4: NaH / tetrahydrofuran / 20 - 35 °C
5: 1.) NaBH4, BF3*Et2O, 2.) aq. KOH, 3.) 30 percent aq. H2O2
6: 91 percent / BBr3 / CH2Cl2 / 40 °C
7: 97 percent / H2 / Pd/C / methanol / Ambient temperature
8: 91 percent / NaHCO3 / H2O; dioxane / Ambient temperature
With
potassium hydroxide; sodium hydroxide; sodium tetrahydroborate; n-butyllithium; boron trifluoride diethyl etherate; hydrogen; dihydrogen peroxide; bromine; boron tribromide; sodium hydride; sodium hydrogencarbonate; sodium bromide;
palladium on activated charcoal;
In
tetrahydrofuran; 1,4-dioxane; methanol; dichloromethane; water;
DOI:10.1016/S0960-894X(99)00196-1