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ChemicalBook CAS DataBase List 7-Chloroquinolin-4-ol
86-99-7

7-Chloroquinolin-4-ol synthesis

14synthesis methods
-

Yield:86-99-7 98.5%

Reaction Conditions:

in paraffin oil at 230; for 0.833333 h;Temperature;Solvent;

Steps:

1-3 Synthesis of hydroxy-7-chloroquinoline (8) (decarboxylation)

Add 120mL of paraffin oil to the reaction vessel and add it in batches when the temperature reaches 23040g of 7-chloro-4-hydroxyquinoline-2-carboxylic acid, continue to react for 50 minutes at this temperature after the addition is complete,It was filtered when the temperature dropped to 30°C, and the filter cake was washed and dried with petroleum ether to obtain 31.6 g of product, with a yield of 98.5%. Melting point 276-279°C.

References:

CN111362872,2020,A Location in patent:Paragraph 0020; 0025-0026; 0029; 0034-0035; 0038; 0043-0044

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