3967-55-3

Usage

Uses

4,5-Dichloro-1,3-oxolan-2-one is a useful chemical reagent.

InChI:InChI=1/C3H2Cl2O3/c4-1-2(5)8-3(6)7-1/h1-2H

Upstream product

• 872-36-6 vinylene carbonate 
• 96-49-1 [1,3]-dioxolan-2-one 

Downstream Products

• 872-36-6 vinylene carbonate 
• 311810-75-0 difluoroethylene carbonate 

Relevant academic research and scientific papers

MANUFACTURING METHOD OF MONOCHLOROETHYLENE CARBONATE

PROBLEM TO BE SOLVED: To provide a manufacturing method of industrial monochloroethylene carbonate by carrying out a photoreaction between ethylene carbonate and chlorine gas. SOLUTION: A manufacturing method of monochloroethylene carbonate is characterized in that by using a flow type photochlorination apparatus that comprises a reaction case for reacting a liquid while supplying liquid, a support stage for supporting by tilting the reaction case in such a way that the liquid flows through its own weight, a light irradiation section for transmitting light for performing a photochlorination reaction by irradiating light on the reaction case, and a temperature control unit for carrying out the photochlorination reaction by controlling the temperature of the reaction case on the reaction case, ethylene carbonate is introduced from the liquid supply part into each channel groove, chlorine gas is introduced into the gas circulation part from the gas supply port, and light is radiated from the light irradiation section is provided, and thereby the problem was solved. SELECTED DRAWING: Figure 1 COPYRIGHT: (C)2022,JPOandINPIT

Preparation method for difluoroethylene carbonate

The invention discloses a preparation method for difluoroethylene carbonate. The method comprises the following steps: step 1, adding front cut fraction of vinylene carbonate and an organic solvent into a first reaction kettle, performing mixing and dissolving completely, introducing a nitrogen gas, wherein the mass fraction of vinylene carbonate in the front cut fraction of the vinylene carbonateis 30%-60%, performing heating to the temperature of 20-50 DEG C, adding liquid bromine dropwise or introducing a chlorine gas, performing an addition reaction, after the reaction is completed, performing desolventizing, performing refining to obtain a pure product of dibromoethylene carbonate or a pure product of dichloroethylene carbonate, and putting the pure product into a second reaction kettle for standby application; step 2, adding an organic solvent into the second reaction kettle until mixing and dissolving are performed completely, then adding a fluorinating reagent, performing a reaction, adding triethylamine to make the reaction liquid system weakly acidic, heating the second reaction kettle until the temperature is 50-70 DEG C, and keeping the temperature until a reaction isfinished, so as to obtain a crude product; and step 3, performing vacuum rectification on the crude product to obtain the target product difluoroethylene carbonate. The method provided by the invention has the advantages that the target product has high purity and a high yield, can reach an electronic grade, and fully utilizes a waste liquid.

Terminal aziridines by addition of Grignard reagents or organoceriums to an (α-chloro)sulfinylimine

Reaction of N-(2-chloroethylidene)-tert-butylsulfinamide with Grignard reagents or organoceriums gives terminal N-tert-butylsulfinyl aziridines in good yields and (mainly with organoceriums) good diastereomeric ratios. Oxidation of terminal N-tert-butylsu