Summary of the invention
The purpose of this invention is to provide a kind of preparation 3,3 ', 4,4 '-method of bibenzene tetracarboxylic, have the method uniqueness, technological process is simple, easy to operate, yield is high and cost is lower, production efficiency and economic benefit be than advantages such as height.
The present invention seeks to realize like this: a kind of preparation 3,3 ', 4,4 '-method of bibenzene tetracarboxylic, it is characterized in that the 4-halophthalic acid under palladium charcoal-potassiumiodide binary composite catalyst effect, carries out linked reaction with the alcohols reductive agent, its step comprises:
A, preparation 3-10% alkaline solution add the 4--halophthalic acid in the alkaline solution, its-COOH: OH
-Mol ratio=1: 1-3, dissolving;
B, adding palladium charcoal-potassiumiodide binary composite catalyst, drip alcohols material down at 80-100 ℃, alcohols material available hydroxyl add-on and 4-halophthalic acid mol ratio=1: 1-3, the dropping time is 3-8 hour, reaction finishes, and filters palladium charcoal-potassium iodide catalyst;
C, gained filtrate is added drop-wise in the 5-10% sulphuric acid soln, filters, promptly obtain the crude product bibenzene tetracarboxylic.
Described 4-halophthalic acid also can be 4-fluorine phthalic acid or 4-phthalate bromine, 4-iodine phthalic acid for the 4-chloro-o-phthalic acid is good.
Described alcohols material is methyl alcohol, ethylene glycol or glycerine etc.
Described alkali is alkali-metal oxyhydroxide, as sodium hydroxide or potassium hydroxide etc.
The preferable method for making of described palladium charcoal-potassiumiodide binary composite catalyst is: solid K I is dissolved in≤50% methanol aqueous solution in, getting 1~4% palladium carbon catalyst adds in the solution, 40~70 ℃ of stirrings heat up, add gac again and stir cooling, KI: 1~4% palladium carbon catalyst: gac=1: 2~5: 2~5, filter, oven dry promptly obtains palladium charcoal-potassiumiodide binary composite catalyst.
Described preparation 3,3 ', 4,4 '-method of bibenzene tetracarboxylic, it is characterized in that the processing of crude product can being re-refined, obtain elaboration 3,3 ', 4,4 '-bibenzene tetracarboxylic.
The present invention has following unusual effect: overcome the deficiency of prior art, had the method uniqueness, technological process is simple, easy to operate, yield is high and cost is lower, production efficiency and the more high outstanding advantage of economic benefit.
Be described further below in conjunction with embodiment, but not as a limitation of the invention.
Embodiment
One, lay-by material: the preparation technology of binary composite catalyst palladium charcoal-potassiumiodide:
Solid K I is dissolved in≤50% methanol aqueous solution in, getting 1~4% palladium carbon catalyst adds in the solution, 40~70 ℃ of stirrings heat up, add gac again and stir cooling, KI: 1~4% palladium carbon catalyst: gac=1: 2~5: 2~5, filter, oven dry promptly obtains palladium charcoal-potassiumiodide binary composite catalyst.
Preparation binary composite catalyst palladium charcoal-potassiumiodide gives an example 1:
Weighing 3g solid K I is dissolved in 50 milliliter of 20% methanol aqueous solution, gets the 10g3% palladium carbon catalyst and adds in the solution, be warmed up to 60 ℃, stirred 2 hours, and added 200 order gac 5g again, stirred 3 hours, cooling, filter, drain, 50 ℃ of vacuum dryings 2 hours, gained is binary composite catalyst palladium charcoal-potassiumiodide, and is standby.
Preparation binary composite catalyst palladium charcoal-potassiumiodide gives an example 2:
Weighing 5g solid K I is dissolved in 100 milliliter of 50% methanol aqueous solution, gets the 10g1% palladium carbon catalyst and adds in the solution, be warmed up to 40 ℃, stirred 2 hours, and added 200 order gac 10g again, stirred 2 hours, cooling, filter, drain, 50 ℃ of vacuum dryings 2 hours, gained is binary composite catalyst palladium charcoal-potassiumiodide, and is standby.
Preparation binary composite catalyst palladium charcoal-potassiumiodide gives an example 3:
Weighing 4g solid K I is dissolved in 50 milliliter of 10% methanol aqueous solution, gets the 20g4% palladium carbon catalyst and adds in the solution, be warmed up to 70 ℃, stirred 2 hours, and added 200 order gac 20g again, stirred 3 hours, cooling, filter, drain, 50 ℃ of vacuum dryings 2 hours, gained is binary composite catalyst palladium charcoal-potassiumiodide, and is standby.
Two, the embodiment of the invention 1:
In the four-hole reaction flask that is equipped with dropping funnel, thermometer and stirring, add 18g (0.45mol) sodium hydroxide, 200ml water, be warmed up to 80 ℃, dissolve transparent after, add 15g (0.075mol) 4-chloro-o-phthalic acid in batches, add the above-mentioned Pd/carbon catalyst of 0.3g, be warmed up to 90 ℃, drip 3g methyl alcohol, 4 hours dropping time, after dropwising, insulation reaction 3 hours, filter, mother liquor is added drop-wise in 10% sulphuric acid soln, obtains white crystals, filtered while hot, washing obtains the crude product bibenzene tetracarboxylic.
The crude product bibenzene tetracarboxylic is placed in 10 times of purified water, 100 ℃ of poach 5 hours, cooling, washing, drying obtain bibenzene tetracarboxylic 10.1g, record yield 82%, purity 99.7%, fusing point 298-300 ℃.
The embodiment of the invention 2:
In the four-hole reaction flask that is equipped with dropping funnel, thermometer and stirring, add 14g (0.25mol) potassium hydroxide, 250ml water, be warmed up to 80 ℃, dissolve transparent after, gradation adds 4-phthalate bromine 12.3g (0.05mol), adds the above-mentioned catalyzer of 0.1g, be warmed up to 95 ℃, Dropwise 5 g aqueous glycerin solution, 2-5 hour dropping time, after dropwising, insulation reaction 5 hours, filter, mother liquor is added drop-wise in 10% sulphuric acid soln, obtains white crystals, filtered while hot, washing obtains the crude product bibenzene tetracarboxylic.
The crude product bibenzene tetracarboxylic is placed in 8 times of purified water, 100 ℃ of poach 4 hours, filtration, washing, drying obtain bibenzene tetracarboxylic 7.4g, record yield 89.7%, purity 99.6%, fusing point 297-299 ℃.
The embodiment of the invention 3:
In the four-hole reaction flask that is equipped with dropping funnel, thermometer and stirring, add 14g (0.25mol) potassium hydroxide, 220ml water, be warmed up to 80 ℃, dissolve transparent after, gradation adds 4-iodine phthalic acid 11.7g (0.04mol), adds the above-mentioned catalyzer of 0.1g, be warmed up to 95 ℃, drip the 1g methanol solution, 2-5 hour dropping time, after dropwising, insulation reaction 5 hours, filter, mother liquor is added drop-wise in 10% sulphuric acid soln, obtains white crystals, filtered while hot, washing obtains the crude product bibenzene tetracarboxylic.
The crude product bibenzene tetracarboxylic is placed in 8 times of purified water, 100 ℃ of poach 3 hours, filtration, washing, drying obtain bibenzene tetracarboxylic 5.95g, record yield 90%, purity 99.5%, fusing point 297-299 ℃.
The embodiment of the invention 4:
In the four-hole reaction flask that is equipped with dropping funnel, thermometer and stirring, add 7g (0.175mol) sodium hydroxide, 200ml water, be warmed up to 80 ℃, dissolve transparent after, add 15g (0.075mol) 4-chloro-o-phthalic acid in batches, add the above-mentioned Pd/carbon catalyst of 0.5g, be warmed up to 95 ℃, drip 7g methyl alcohol, 4 hours dropping time, after dropwising, insulation reaction 3 hours, filter, mother liquor is added drop-wise in 10% sulphuric acid soln, obtains white crystals, filtered while hot, washing obtains the crude product bibenzene tetracarboxylic.
The crude product bibenzene tetracarboxylic is placed in 10 times of purified water, 100 ℃ of poach 5 hours, cooling, washing, drying obtain bibenzene tetracarboxylic 10.3g, record yield 83%, purity 99.7%, fusing point 298-300 ℃.
The embodiment of the invention 5:
In the four-hole reaction flask that is equipped with dropping funnel, thermometer and stirring, add 7.3g (0.13mol) potassium hydroxide, 230ml water, be warmed up to 80 ℃, dissolve transparent after, gradation adds 4-phthalate bromine 12.3g (0.05mol), adds the above-mentioned catalyzer of 0.3g, be warmed up to 85 ℃, drip the 11g aqueous glycerin solution, 2-5 hour dropping time, after dropwising, insulation reaction 3 hours, filter, mother liquor is added drop-wise in 5% sulphuric acid soln, obtains white crystals, filtered while hot, washing obtains the crude product bibenzene tetracarboxylic.
The crude product bibenzene tetracarboxylic is placed in 8 times of purified water, 100 ℃ of poach 4 hours, filtration, washing, drying obtain bibenzene tetracarboxylic 7.5g, record yield 91%, purity 99.5%, fusing point 297-299 ℃.
The embodiment of the invention 6:
In the four-hole reaction flask that is equipped with dropping funnel, thermometer and stirring, add 5.4g (0.096mol) potassium hydroxide, 170ml water, be warmed up to 80 ℃, dissolve transparent after, gradation adds 4-iodine phthalic acid 11.7g (0.04mol), adds the above-mentioned catalyzer of 0.5g, be warmed up to 90 ℃, drip the 3.2g methanol solution, 3 hours dropping time, after dropwising, insulation reaction 3 hours, filter, mother liquor is added drop-wise in 5% sulphuric acid soln, obtains white crystals, filtered while hot, washing obtains the crude product bibenzene tetracarboxylic.
The crude product bibenzene tetracarboxylic is placed in 8 times of purified water, 100 ℃ of poach 3 hours, filtration, washing, drying obtain bibenzene tetracarboxylic 6.0g, record yield 91.5%, purity 99.6%, fusing point 297-299 ℃.
The embodiment of the invention 7:
In the four-hole reaction flask that is equipped with dropping funnel, thermometer and stirring, add 18g (0.45mol) sodium hydroxide, 280ml water, be warmed up to 80 ℃, dissolve transparent after, add 15g (0.075mol) 4-chloro-o-phthalic acid in batches, add the above-mentioned Pd/carbon catalyst of 0.6g, be warmed up to 90 ℃, drip 7g ethylene glycol, 2 hours dropping time, after dropwising, insulation reaction 3 hours, filter, mother liquor is added drop-wise in 6% sulphuric acid soln, obtains white crystals, filtered while hot, washing obtains the crude product bibenzene tetracarboxylic.
The crude product bibenzene tetracarboxylic is placed in 10 times of purified water, 100 ℃ of poach 5 hours, cooling, washing, drying obtain bibenzene tetracarboxylic 10.3g, record yield 83%, purity 99.5%, fusing point 298-300 ℃.
Three, other embodiment:
A (with the 4-halophthalic acid and during) without this catalyzer:
In the four-hole reaction flask that is equipped with dropping funnel, thermometer and stirring, add 20g (0.5mol) sodium hydroxide, 180ml water, be warmed up to 80 ℃, dissolve transparent after, gradation adds 4-chlorophthalic acid g (0.1mol), adds 5% palladium carbon catalyst 0.25g, be warmed up to 90 ℃, drip 30g methyl alcohol, 2-5 hour dropping time, after dropwising, insulation reaction 5 hours, filter, mother liquor is added drop-wise in 10% sulphuric acid soln, obtains white crystals, filtered while hot, washing obtains the crude product bibenzene tetracarboxylic.
The crude product bibenzene tetracarboxylic is placed in 10 times of purified water, 100 ℃ of poach 3 hours, filtration, washing, drying obtain bibenzene tetracarboxylic 11.5g, record yield 70%, purity 99.5%, fusing point 297-300 ℃.
B (with the 4-halophthalic acid and during) without this catalyzer:
In the four-hole reaction flask that is equipped with dropping funnel, thermometer and stirring, add 14g (0.25mol) potassium hydroxide, 220ml water, be warmed up to 80 ℃, dissolve transparent after, gradation adds 4-phthalate bromine 12.3g (0.05mol), adds 4% palladium carbon catalyst 0.15g, be warmed up to 95 ℃, Dropwise 5 g aqueous glycerin solution, 2-5 hour dropping time, after dropwising, insulation reaction 5 hours, filter, mother liquor is added drop-wise in 10% sulphuric acid soln, obtains white crystals, filtered while hot, washing obtains the crude product bibenzene tetracarboxylic.
The crude product bibenzene tetracarboxylic is placed in 8 times of purified water, 100 ℃ of poach 4 hours, filtration, washing, drying obtain bibenzene tetracarboxylic 6.7g, record yield 81%, purity 99.5%, fusing point 297-299 ℃.
De1 reaction equation of the present invention is exemplified below:
Effect of the present invention is significant.As Hitachi, Ltd is raw material with the chloro-benzoic anhydride, is that the highest yield of Preparation of Catalyst bibenzene tetracarboxylic only is 57% with palladium.