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ChemicalBook CAS DataBase List 6-Acetoxy-4-chloro-7-methoxyquinazoline

6-Acetoxy-4-chloro-7-methoxyquinazoline synthesis

14synthesis methods
-

Yield:230955-75-6 93.7%

Reaction Conditions:

with sulfuryl dichloride in acetonitrile at 55;Temperature;Concentration;

Steps:

1
1) exchange resin 12.8g in D301 macroporous weakly basic styrene anion, 6- (2-morpholino-ethoxy) -7-methoxy-3,4-dihydro-quinazolin-4 ketone (31.9g, 100mol), sulfuryl chloride (16.2g, 120mmol) in 100ml acetonitrile were contact reaction, the contact reaction temperature was 55 , after the reaction was quenched with ice-water, extracted with methylene chloride, concentrated under reduced pressure to give 6-acetoxy-4-chloro-7-methoxy-quinazoline of 31.7g, a yield of 93.7%, a purity of 99.05%.

References:

Chen, Hong;He, Baohong CN105541737, 2016, A Location in patent:Paragraph 0026; 0034

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