Technology Process of 3,3a-dihydroxy-4-(benzyloxy)-6-methoxy-2,3,3a,8a-tetrahydrofuro<2,3-b>benzofuran
There total 8 articles about 3,3a-dihydroxy-4-(benzyloxy)-6-methoxy-2,3,3a,8a-tetrahydrofuro<2,3-b>benzofuran which
guide to synthetic route it.
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synthetic route:
- Guidance literature:
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Multi-step reaction with 6 steps
1: 42 percent / HBr / CH2Cl2 / 0.33 h / 25 °C
2: 1.) aq. oxalic acid, 2.) aq. sodium hydroxide / 1.) acetone, reflux, 0.5 h, 2.) tetrahydrofuran, 25 deg C, 23.5 h
3: 98 percent / p-toluenesulfonic acid / 3 h / 25 °C
4: 88 percent / hydrogen / 5percent Pd-BaSO4 / ethyl acetate / 1 h / 25 °C / 760 Torr
5: 98 percent / potassium carbonate / dimethylformamide / 24 h / 25 °C
6: 90 percent / acetic acid / H2O / 1 h / Heating
With
sodium hydroxide; hydrogen bromide; hydrogen; oxalic acid; potassium carbonate; toluene-4-sulfonic acid; acetic acid;
palladium on barium sulfate;
In
dichloromethane; water; ethyl acetate; N,N-dimethyl-formamide;
DOI:10.1021/ja00402a039
- Guidance literature:
-
Multi-step reaction with 8 steps
1: potassium iodide, potassium carbonate / dimethylformamide / 12 h / 25 °C
2: 95 percent / aq. potassium hydroxide / methanol; H2O / 18 h / Heating
3: 42 percent / HBr / CH2Cl2 / 0.33 h / 25 °C
4: 1.) aq. oxalic acid, 2.) aq. sodium hydroxide / 1.) acetone, reflux, 0.5 h, 2.) tetrahydrofuran, 25 deg C, 23.5 h
5: 98 percent / p-toluenesulfonic acid / 3 h / 25 °C
6: 88 percent / hydrogen / 5percent Pd-BaSO4 / ethyl acetate / 1 h / 25 °C / 760 Torr
7: 98 percent / potassium carbonate / dimethylformamide / 24 h / 25 °C
8: 90 percent / acetic acid / H2O / 1 h / Heating
With
potassium hydroxide; sodium hydroxide; hydrogen bromide; hydrogen; oxalic acid; potassium carbonate; toluene-4-sulfonic acid; acetic acid; potassium iodide;
palladium on barium sulfate;
In
methanol; dichloromethane; water; ethyl acetate; N,N-dimethyl-formamide;
DOI:10.1021/ja00402a039
