ChemicalBook CAS DataBase List Nitrapyrin

Nitrapyrin synthesis

5synthesis methods

Product Name:Nitrapyrin
CAS Number:1929-82-4
Molecular formula:C6H3Cl4N
Molecular Weight:230.91

109-06-8
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$16.00/25g

1929-82-4
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$25.00/25 g

Yield:1929-82-4 89.4%

Reaction Conditions:

with chlorine in water at 240;Inert atmosphere;Temperature;

Steps:

6-10 Example 9
In this embodiment, a method for preparing 2-chloro-6-trichloromethylpyridine is provided.First, the 2-methylpyridine aqueous solution is passed through a liquid sample pump to a gasifier for gasification, and the molar ratio of 2-methylpyridine to water in the 2-methylpyridine aqueous solution is 1:5, and then gasified. The 2-methylpyridine aqueous solution, chlorine gas and inert gas were mixed and introducedinto a fixed bed reactor in which 1 g of a catalyst for preparing 2-chloro-6-trichloromethylpyridine was placed at a space velocity of80 h^-1. The reaction was carried out at 240 ° C, the condensed product was collected, chromatographic analysis was carried out, and the tail gas was passed through an aqueous solution of sodium hydroxide to obtain 2-chloro-6-trichloromethylpyridine, and the yield of 2-chloro-6-trichloromethylpyridine was 89.4%.

References:

Yancheng Technology College;Ding Jianfei;Shao Rong;Xu Wei CN108530346, 2018, A Location in patent:Paragraph 0043-0057

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109-06-8
408 suppliers
$16.00/25g