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18162-48-6872-50-4Methylene ChloridenaphthaleneTHFTitanium Dioxide
ChemicalBook CAS DataBase List 4-Amino-2-chloropyridine
14432-12-3

4-Amino-2-chloropyridine synthesis

11synthesis methods
2-Chloro-4-aminopyridine is an intermediate of the plant growth regulator chlorfenuron, mainly in laboratory research and development and chemical production processes. It can be obtained by 2-chloropyridine-N-oxide as raw material, first nitrating with fuming nitric acid, and then reducing iron powder in acetic acid.
2-Chloro-4-nitropyridine 1-oxide

14432-16-7
213 suppliers
$10.00/1g

4-Amino-2-chloropyridine

14432-12-3
543 suppliers
$5.00/5g

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Yield:14432-12-3 85%

Reaction Conditions:

with hydrogenchloride;iron in ethanol;water;Reflux;

Steps:

1.3

(3) 2-chloro-4-nitropyridine N-oxide (7.9g, 0.05mol) in 500ml three-neck flask, iron powder (14g, 0.25mol), ethanol 150ml, water 50ml, 5ml of concentrated hydrochloric acid was heated to reflux , TLC to monitor the completion of the reaction, ethyl acetate was added until the reaction was complete 30ml, stirring was allowed to stand suction, delamination, dried over anhydrous sodium sulfate, and concentrated to give the product 2-chloro-4-aminopyridine, molar yield 85%

References:

CN109748865,2019,A Location in patent:Paragraph 0016; 0019; 0022

23056-36-2 Synthesis
2-Chloro-4-nitropyridine

23056-36-2
378 suppliers
$6.00/1g

4-Amino-2-chloropyridine

14432-12-3
543 suppliers
$5.00/5g

References
73583-37-6 Synthesis
2-Chloro-4-bromopyridine

73583-37-6
334 suppliers
$9.00/1g

4-Amino-2-chloropyridine

14432-12-3
543 suppliers
$5.00/5g

References
2-Chloro-4-nitropyridine 1-oxide

14432-16-7
213 suppliers
$10.00/1g

Dibutyl ether

142-96-1
321 suppliers
$14.00/25mL

4-Amino-2-chloropyridine

14432-12-3
543 suppliers
$5.00/5g

References
2-Chloropyridine

109-09-1
0 suppliers
$10.60/1gm:

4-Amino-2-chloropyridine

14432-12-3
543 suppliers
$5.00/5g

References

4-Amino-2-chloropyridine Related Search:

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