Preparation method of azo compounds
A compound and azo-based technology, which is applied in the field of preparation of azo-based compounds, can solve the problems of harsh reaction conditions and environmental protection, and achieve the effects of high reaction temperature, reduced emissions, and mild reaction conditions
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0033]
[0034] Drop 50 grams of 98% sulfuric acid into 30 grams of water, stir, add 17.3 grams of o-chloro-p-nitroaniline below 25 ° C, and beat for 30 minutes. Below 20°C, add 32.6 grams of nitrosylsulfuric acid dropwise, and the drop will be completed in about 2-3 hours. After the drop is completed, keep for 2 hours, and wait for coupling after the diazotization is complete. Detection method: Dip a few drops of diazo solution with a glass rod and put it into ice water. The ice water is clear and the potassium iodide test paper turns blue, which means the end point is reached. If the end point is not reached, continue stirring until the end point is reached.
[0035] Add 300ml of bottom water into a 1000ml beaker, add 1 gram of Pingping, 65.76 grams of 48% ruby esterification solution (N,N diacetoxyethyl m-acetamidoaniline), and then add 0.5 gram of sulfamic acid or urea. Lower the temperature below 20°C and add the diazonium salt dropwise. The dropwise addition was c...
Embodiment 2
[0037] Drop 60 grams of 98% sulfuric acid into 28 grams of water, stir, add 17.3 grams of o-chloro-p-nitroaniline below 25 ° C, and beat for 30 minutes. Below 20°C, add 32.6 grams of nitrosylsulfuric acid dropwise, and the drop will be completed in about 2-3 hours. After the drop is completed, keep for 2 hours, and wait for coupling after the diazotization is complete. Detection method: Dip a few drops of diazo solution with a glass rod and put it into ice water. The ice water is clear and the potassium iodide test paper turns blue, which means the end point is reached. If the end point is not reached, continue stirring until the end point is reached.
[0038] Add 400ml of bottom water into a 1000ml beaker, add 1 gram of Pingping, 65.76 grams of 48% ruby esterification solution (N,N diacetoxyethyl m-acetamidoaniline), and then add 0.5 gram of sulfamic acid or urea. Lower the temperature below 20°C and add the diazonium salt dropwise. The dropwise addition was completed in ...
PUM
Login to View More Abstract
Description
Claims
Application Information
Login to View More