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ChemicalBook CAS DataBase List 5-Amino-2-(4-chlorophenoxy)pyridine
75926-64-6

5-Amino-2-(4-chlorophenoxy)pyridine synthesis

3synthesis methods
-

Yield:75926-64-6 81%

Reaction Conditions:

with acetic acid;zinc at 20; for 3 h;

Steps:

1.2 Preparation of 6- (4-chlorophenoxy) -3-aminopyridine

2.0 g (8.0 mmol) of 6- (4-chlorophenoxy) -3-nitropyridine was added to a 150 mL three-necked flask,20 mL of AcOH, then 1.37 g (2.1 mmol) of zinc powder was added in portions and reacted at room temperature for 3 h. After completion of the reaction, the solvent was removed by suspending and the aqueous solution of NaOH (5%) was adjusted to pH to neutral. Of ethyl acetate. The organic phase was dried over anhydrous MgSO4 and evaporated to dryness. After column chromatography, 1.3 g of product was obtained as a pale red oil in 81% yield.

References:

CN106543167,2017,A Location in patent:Paragraph 0321; 0322; 0323