Preparation method of 1,3-dioxolane
A technology of dioxolane and ethylene glycol, applied in the direction of organic chemistry, etc., can solve the problems of large amount of catalyst, high reaction temperature and long reaction time, and achieve the effects of high product purity, low reaction temperature and short reaction time.
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Examples
Example Embodiment
[0016] Example 1
[0017] In this example, 1,3-dioxolane was prepared as follows:
[0018] Add 100g of ethylene glycol and 0.37g of N86 ionic liquid catalyst into the reaction kettle, then add 46g of paraformaldehyde, raise the temperature to 60℃, react for 1h, then slowly raise the temperature to 85℃, keep this temperature for 2h. The obtained product is dried and rectified with solid alkali, and finally 0.2 g of 2,6-di-tert-butyl-p-cresol is added and mixed uniformly to obtain the product 1,3-dioxolane. The obtained product is a colorless and transparent liquid with a yield of 89.8%.
Example Embodiment
[0019] Example 2
[0020] In this example, 1,3-dioxolane was prepared as follows:
[0021] Add 100g of ethylene glycol and 0.37g of N86 ionic liquid catalyst into the reaction kettle, then add 46g of paraformaldehyde, heat up to 60°C, react for 1h, then slowly heat up to 90°C, and keep this temperature for 3h. The obtained product is dried and rectified with solid alkali, and finally 0.2 g of 2,6-di-tert-butyl-p-cresol is added and mixed uniformly to obtain the product 1,3-dioxolane. The obtained product is a colorless and transparent liquid with a yield of 90.5%.
Example Embodiment
[0022] Example 3
[0023] In this example, 1,3-dioxolane was prepared as follows:
[0024] Add 100g of ethylene glycol and 0.37g of N86 type ionic liquid catalyst into the reaction kettle, then add 46g of paraformaldehyde, raise the temperature to 60°C, react for 1h, then slowly raise the temperature to 95°C, and keep this temperature for 4h. The obtained product is dried and rectified with solid alkali, and finally 0.2 g of 2,6-di-tert-butyl-p-cresol is added and mixed uniformly to obtain the product 1,3-dioxolane. The obtained product is a colorless and transparent liquid with a yield of 92.1%.
PUM
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap