3,9-perylenedicarboxylic acid synthesis
- Product Name:3,9-perylenedicarboxylic acid
- CAS Number:6364-19-8
- Molecular formula:C22H12O4
- Molecular Weight:340.33
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Yield: 31 g
Reaction Conditions:
with water;potassium hydroxide at 90 - 200; under 1500.15 - 2250.23 Torr; for 23 h;Autoclave;
Steps:
5 Example 5
In the reaction bottle 3,4,9,10-perylenetetracarboxylic dianhydride40g Adding 200 mL of an aqueous solution containing 40 g of potassium hydroxide, Stir well and heat to 90 ° C. Then moving the reaction solution into the autoclave, Closed autoclave, Slowly warm to 200 ° C, It takes about 3 hours, At this time, the pressure in the kettle is 0.2 to 0.3 MPa. After the heat preservation reaction for 20 hours, the temperature was lowered to room temperature. Adjust the pH of the reaction solution to 8-9 with a 10% hydrochloric acid solution. Filter the reaction solution, Continue to adjust the pH of the filtrate to 2~3 with 10% hydrochloric acid solution. At this point, a large amount of solids precipitated. Filter the reaction solution, The filter cake was washed twice with 200 mL of saturated sodium chloride solution. Dry the filter cake to obtain 3,9-perylenedicarboxylic acid 31g
References:
Henan Wanliu Biological Technology Co., Ltd.;Yang Weixiao;Hou Yansheng CN108864153, 2018, A Location in patent:Paragraph 0031-0033
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