Technology Process of 2H-1-Benzopyran, 6-ethoxy-7-methoxy-2,2-dimethyl-
There total 9 articles about 2H-1-Benzopyran, 6-ethoxy-7-methoxy-2,2-dimethyl- which
guide to synthetic route it.
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synthetic route:
- Guidance literature:
-
Multi-step reaction with 4 steps
1: 79 percent / unfused ZnCl2 with 5percent water, POCl3 / 5 h / 50 °C
2: 85 percent / K2CO3 / dimethylformamide / 1 h / 80 °C
3: 85 percent / K2CO3, KI / dimethylformamide / 12 h / 80 °C
4: 1.) NaBH4; 2.) 4 M HCl / 1.) methanol, 25 deg C, 1.5 h; 2.) THF, 25 deg C, 1 h
With
hydrogenchloride; sodium tetrahydroborate; potassium carbonate; potassium iodide; zinc(II) chloride; trichlorophosphate;
In
N,N-dimethyl-formamide;
- Guidance literature:
-
Multi-step reaction with 4 steps
1: 79 percent / unfused ZnCl2 with 5percent water, POCl3 / 5 h / 50 °C
2: 85 percent / K2CO3 / dimethylformamide / 1 h / 80 °C
3: 85 percent / K2CO3, KI / dimethylformamide / 12 h / 80 °C
4: 1.) NaBH4; 2.) 4 M HCl / 1.) methanol, 25 deg C, 1.5 h; 2.) THF, 25 deg C, 1 h
With
hydrogenchloride; sodium tetrahydroborate; potassium carbonate; potassium iodide; zinc(II) chloride; trichlorophosphate;
In
N,N-dimethyl-formamide;
- Guidance literature:
-
Multi-step reaction with 3 steps
1: SeO2, 30percent aq. H2O2 / CH2Cl2 / 36 h / Ambient temperature
2: 5percent methanolic KOH
3: K2CO3 / acetone
With
potassium hydroxide; selenium(IV) oxide; dihydrogen peroxide; potassium carbonate;
In
dichloromethane; acetone;
DOI:10.1080/00397919208021628
