AB type dibasic aminoacid monomer containing hydroxy group and its preparation method
A type of amino acid monomer and hydroxyl technology, applied in the field of AB type monomer and its preparation, can solve the problems of unfavorable industrial production, complicated wastewater treatment, long production cycle, etc., and achieve less by-products, easy operation and low production cost low effect
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Embodiment 1
[0047]Add 174g (1.58mol) of hydroquinone and 273g (1.58mol) of 4-nitrophthalonitrile in the reaction kettle to dissolve in 700ml of dimethyl sulfoxide, and then use potassium carbonate to adjust the pH value of the solution to 8~ After 9, react at 0°C for 24 hours under a nitrogen atmosphere, add the resulting product solution to precipitate in water, filter and dry to obtain the solid product 4-(4-hydroxyphenoxy)phthalonitrile; add 4 -(4-Hydroxyphenoxy)phthalonitrile 136g (0.576mol) was dissolved in 500ml acetone, and under a nitrogen atmosphere, 111.7g (1.152mol) of 65% nitric acid was added dropwise at -10°C, and then React at room temperature for 24 hours, then pour the reaction solution into water, filter and dry to obtain the product 4-(4-hydroxy-3-nitrophenoxy)phthalonitrile; add 140g of potassium hydroxide, 1000ml of water, and ethanol to the reaction kettle After dissolving 800ml, add 79.2g of 4-(4-hydroxy-3-nitrophenoxy)phthalonitrile to dissolve, heat up to 50°C und...
Embodiment 2
[0052] Add 350g (3.18mol) of hydroquinone and 581.76g (3.03mol) of 4-nitrophthalimide into the reaction kettle, dissolve in 1500ml of N, N dimethylacetamide, and then use potassium carbonate After adjusting the pH value of the solution to 8-9, react at 10°C for 22 hours under a nitrogen atmosphere, then add the resulting product solution into water to precipitate, filter and dry to obtain the solid product 4-(4-hydroxyphenoxy)phthaloyl Imine; 300g (1.18mol) of 4-(4-hydroxyphenoxy)phthalimide was added to the reaction kettle and dissolved in 1000ml chloroform, and the concentration was added dropwise at -7°C under a nitrogen atmosphere. 65% nitric acid 207.94g (2.145mol), then react at room temperature for 22h, pour the reaction solution into water, filter and dry to obtain the product 4-(4-hydroxyl-3-nitrophenoxy)phthalimide; Add potassium hydroxide 200g in the reactor, water 2000ml, after ethanol 1600ml dissolves, then add 4-(4-hydroxyl-3-nitrophenoxy) phthalimide 170g to dis...
Embodiment 3
[0054] Add 174g (1.58mol) of hydroquinone and 249.12g (1.44mol) of 4-nitrophthalonitrile in the reaction kettle to dissolve in 700ml of dimethyl sulfoxide, then adjust the pH value of the solution with potassium hydroxide After 8 to 9, under nitrogen atmosphere, react at 20°C for 18 hours, add the resulting product solution into water to precipitate, filter and dry to obtain the solid product 4-(4-hydroxyphenoxy)phthalonitrile; Add 136g (0.58mol) of 4-(4-hydroxyphenoxy group) phthalonitrile in the kettle and dissolve in 500ml acetone, and under a nitrogen atmosphere, add dropwise a concentration of 65% nitric acid 93.69g ( 0.967mol), then react at room temperature for 18h, pour the reaction solution into water, filter and dry to obtain the product 4-(4-hydroxyl-3-nitrophenoxy)phthalonitrile; add potassium hydroxide in the reaction kettle 140g, water 1000ml, ethanol 800ml after dissolving, then add 4-(4-hydroxy-3-nitrophenoxy) phthalonitrile 79.2g to dissolve, heat up to 70°C u...
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