Technology Process of methyl 2,4-anhydro-5-azido-5-deoxy-3-O-benzyl-D-ribonate
There total 3 articles about methyl 2,4-anhydro-5-azido-5-deoxy-3-O-benzyl-D-ribonate which
guide to synthetic route it.
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synthetic route:
- Guidance literature:
-
5-azido-3-O-benzyl-5-deoxy-D-arabinono-1,4-lactone;
With
pyridine; trifluoromethylsulfonic anhydride;
In
dichloromethane;
at -40 ℃;
Molecular sieve;
methanol;
With
potassium carbonate;
at -25 ℃;
for 2h;
optical yield given as %de;
DOI:10.1002/chem.201002895
- Guidance literature:
-
Multi-step reaction with 8 steps
1.1: camphor-10-sulfonic acid; copper(II) sulfate / pH 2
2.1: sodium hydride / N,N-dimethyl-formamide; mineral oil / 0 °C
3.1: tetrabutyl ammonium fluoride / tetrahydrofuran
4.1: pyridine / 60 °C
5.1: sodium azide / N,N-dimethyl-formamide / 7 h / 95 °C
6.1: acetic acid / water / 110 °C / Reflux
7.1: bromine; barium carbonate / 1,4-dioxane; water / 6 h / Inert atmosphere
8.1: pyridine; trifluoromethylsulfonic anhydride / dichloromethane / -40 °C / Molecular sieve
8.2: 2 h / -25 °C
With
pyridine; sodium azide; trifluoromethylsulfonic anhydride; camphor-10-sulfonic acid; tetrabutyl ammonium fluoride; bromine; sodium hydride; copper(II) sulfate; acetic acid; barium carbonate;
In
tetrahydrofuran; 1,4-dioxane; dichloromethane; water; N,N-dimethyl-formamide; mineral oil;
DOI:10.1002/chem.201002895
- Guidance literature:
-
Multi-step reaction with 2 steps
1.1: bromine; barium carbonate / 1,4-dioxane; water / 6 h / Inert atmosphere
2.1: pyridine; trifluoromethylsulfonic anhydride / dichloromethane / -40 °C / Molecular sieve
2.2: 2 h / -25 °C
With
pyridine; trifluoromethylsulfonic anhydride; bromine; barium carbonate;
In
1,4-dioxane; dichloromethane; water;
DOI:10.1002/chem.201002895