Synthesis method and application of disalicylaldehyde condensation 2-pyridine formylhydrazine schiff base
A technology of picolinyl hydrazide Schiff base and picolinyl hydrazide, which is applied in the field of synthesis of 5,5'-methylethylene disalicylaldehyde 2-pyridine carboxyl hydrazide Schiff base, can solve the problem of fresh There are reports and other issues, to achieve the effect of enhanced fluorescence intensity, novel structure, and naked eye recognition
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specific Embodiment approach 1
[0030] Specific embodiment one: the structural formula of the double salicylaldehyde acetal 2-pyridine carbohydrazide Schiff base in this embodiment is as follows:
[0031]
specific Embodiment approach 2
[0032] Specific embodiment two: the synthetic method of salicylaldehyde 2-pyridine carbohydrazide type Schiff base is as follows:
[0033] Dissolve salicylaldehyde and 2-pyridinecarbohydrazide in different types of organic solvents under heating conditions; slowly add the hot solution of salicylaldehyde to the hot solution of 2-pyridinecarbohydrazide and heat to reflux After 1 h, a solid was precipitated, cooled, filtered with suction, washed with an organic solvent, and dried to obtain a pure fluorescent probe. Wherein, the molar ratio of salicylaldehyde to 2-pyridinecarbohydrazide is 1:2-3.
specific Embodiment approach 3
[0034] Embodiment 3: The difference between this embodiment and Embodiment 2 is that the organic solvent for dissolving salicylaldehyde is ethyl acetate. Others are the same as in the second embodiment.
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