A method for deoxime aldoxime or ketoxime
A technology of ketoxime and aldoxime, which is applied in the field of purification of aldehydes or ketones, can solve the problems of environmental protection and uneconomical, and achieve the effect of clean reaction
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Embodiment 1
[0015] Mix 1 mmol of benzaldehyde oxime, 0.025 mmol of dibenzyl diselenide, 0.45 mmol of hydrogen peroxide and 2 mL of petroleum ether, then place it in the air at 60 °C and heat it for 24 hours, and then separate it by column chromatography to obtain benzaldehyde in a yield of 88 %.
Embodiment 2
[0016] Embodiment 2: other conditions are the same as in embodiment 1, check the reaction of different organoselenium catalysts, and the experimental results are shown in Table 1.
[0017] Table 1 Inspection of different organoselenium catalysts
[0018] Numbering
[0019] It can be seen from the above results that benzyl selenite and dibenzyl diselenide as catalysts have special effects on this reaction, and other selenium catalysts have no obvious effect.
Embodiment 3
[0020] Example 3: Other conditions were the same as in Example 1, and the reaction of the mixed molar ratios of different organic selenium catalysts and oxime was examined. The experimental results are shown in Table 2.
[0021] Table 2 Test of the mixed molar ratio of different organoselenium catalysts and oxime
[0022] Mixing molar ratio of organoselenium catalyst to oxime
[0023] It can be seen from the above results that the mixing molar ratio of organoselenium catalyst to oxime is the best when the molar ratio is 2.5:100 (Example 1).
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