A kind of purification process of glufosinate-ammonium
A technology of glufosinate-ammonium and glufosinate-ammonium hydrochloride, which is applied in the fields of compounds of group 5/15 elements of the periodic table, organic chemistry, chemical instruments and methods, etc., can solve the problem of long process route and low purification yield of purification process , low yield and other problems, to achieve the effect of simple process steps, high industrialization prospects, and low inorganic salt content
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Embodiment 1-4
[0023] According to the feed ratio of Table 1, glufosinate-ammonium hydrochloride (I) is added in 200ml methanol, add R 2 NH 2 Carry out the ammoniation reaction until the pH value is 9. After the reaction is complete, cool to below 20°C and filter to remove the insoluble matter in the system (the white solid is NH 4 Cl and a small amount of sodium chloride), the filtrate decompresses and removes the solvent to obtain glufosinate-ammonium ammonium salt (II) and a small amount of organic impurities, and the alcohol solvent that evaporates can be recycled;
[0024] Feed ratio and reaction conditions of the ammoniation reaction of table 1
[0025]
[0026] According to the proportioning and reaction conditions of table 2, the glufosinate-ammonium ammonium salt product (II) that embodiment 1-4 prepares 1 )-(II 4 ) were added to 60ml water respectively, and CO 2 Gas, carry out neutralization reaction until the pH value is 3.0, after the reaction is complete, cool down to bel...
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