We found that the substrate contamination with water negatively influenced the performance of the C-H chlorination.Ĭ–H chlorination chlorine gas ethylene carbonate photo flow reactor vinylene carbonate. At a higher conversion of ethylene carbonate such as 61%, the selectivity for monochlorinated ethylene carbonate over dichlorinated ethylene carbonate was 86%. Near-complete selectivity for single chlorination required the low conversion of ethylene carbonate such as 9%, which was controlled by limited introduction of chlorine gas. The partial irradiation of the flow channels also sufficed for the C-H chlorination, which is consistent with the requirement of photoirradiation for the purpose of radical initiation. Such short time of exposition sufficed the photo C-H chlorination. When ethylene carbonate was introduced to the reactor, the residence time was measured to be 15 or 30 s, depending on the slope of the reactor set at 15 or 5°, respectively. services or customize your order by listing your photo requirements in the Customize an Order section.
The setup employed sloped channels so as to make the liquid phase thinner, ensuring a high surface-to-volume ratio.
Now that the window of the terminal is open, use the Once the file. A novel photoflow setup designed for a gas-liquid biphasic reaction turned out to be useful for the direct use of chlorine gas. To begin installing Photoflow Photo Editor on your Ubuntu Linux PC, open a terminal window.
We report the high-speed C-H chlorination of ethylene carbonate, which gives chloroethylene carbonate, a precursor to vinylene carbonate.
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