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ChemicalBook CAS DataBase List 4-bromoquinoline-6-carboxylic acid

4-bromoquinoline-6-carboxylic acid synthesis

5synthesis methods
-

Yield:-

Steps:

Multi-step reaction with 6 steps
1: ethanol / 120 °C / Heating / reflux
2: biphenyl; diphenyl ether / 1 h / 250 °C
3: trichlorophosphate / DMF (N,N-dimethyl-formamide) / 1.5 h / 5 - 20 °C / Cooling with ice
4: sulfuric acid / 39 h / 0 °C / Heating / reflux
5: phosphorus tribromide / DMF (N,N-dimethyl-formamide) / 3 h / 80 °C / Heating / reflux
6: sodium hydroxide / tetrahydrofuran; methanol; water / 5 h / 20 °C / Heating / reflux

References:

Fujisawa Pharmaceutical Co., Ltd. US6348474, 2002, B1

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