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ChemicalBook CAS DataBase List 4-HYDROXY-8-METHYLQUINOLINE
23432-44-2

4-HYDROXY-8-METHYLQUINOLINE synthesis

6synthesis methods
-

Yield:23432-44-2 91.6%

Reaction Conditions:

in diphenylether at 240 - 260; for 0.666667 h;

Steps:

21.D Step D: Preparation of 4-hydroxy-8-methylquinoline

Take 4-hydroxy-8-methylquinoline-3-carboxylic acid 2.23g (0.011mol) in a 250ml trineck bottle, add 50ml diphenyl ether, react at 240 °C to 260 °C for 40min, stop heating, cool to room temperature and add 50ml of petroleum ether, filter, wash petroleum ether twice, give 4-hydroxy-8-methylquinoline white solid 1.60g, yield 91.60%; M.p.: 204.6~205.2 °C; ESI-MS(m/z). ):160.01([M+H]+),182.02([M+Na]+),158.05([M-H]-)

References:

CN114751858,2022,A Location in patent:Paragraph 0125; 0131-0132

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