1. nature:
-Appearance: CAB is a white crystalline solid.
-Solubility: CAB is soluble in water, alcohols, ketones and ester solvents.
-Melting point: The melting point of CAB is about 135-138°C.
2. use:
CAB has many applications in the field of chemistry:
-Fungicide: CAB can be used as a fungicide, which has a good inhibitory effect on microorganisms.
-Soil improver: CAB can improve soil water retention and increase soil fertility.
-Synthesis of polymer compounds: CAB can be used as a reagent in polymer synthesis reactions.
3. Preparation method:
The main steps for preparing CAB are as follows:
-First, 1-methylpyrazole-4-carboxylic acid ethyl ester is reacted with carbon dichloride under basic conditions to obtain 3-chloro-1-methylpyrazole-4-carboxylic acid ethyl ester.
-Then, by reacting with sulfuryl chloride, the chlorine atom is replaced with an aminosulfonyl group to obtain the final product 3-chloro-5-aminosulfonyl-1-methylpyrazole-4-carboxylic acid ethyl ester.
4. Safety Information:
- CBA is irritating, avoid contact with skin and eyes.
-use should pay attention to protective measures to avoid inhalation of its dust or steam.
-Avoid contact with strong oxidants and acids during storage and use to avoid reaction.
-If you come into contact with CAB, rinse immediately with plenty of water and seek medical help.