10436-39-2Relevant articles and documents
-
Hatch,McDonald
, p. 3328 (1952)
-
PROCESSES FOR PREPARING PENTACHLOROPROPANE AND TETRACHLOROPROPENE FROM DICHLOROPROPENE
-
Paragraph 0092, (2022/04/03)
A processes for preparing 1,1,2,3-tetrachloropropene, 2,3,3,3-tetrachloropropene, or a mixture thereof from 1,3-dichloropropene. The process may include a two successive chlorination and dehydrochlorination reactions. In a first chlorination reaction 1,3-dichloropropene is reacted with a chlorination agent to form a first chlorination reaction product including 1,1,2,3-tetrachloropropane. This first chlorination reaction product is reacted with a dehydrochlorination reagent in a first dehydrochlorination reaction to form a first dehydrochlorination reaction product including a trichloropropene. The trichloropropene containing reaction product is reacted with a chlorination agent in a second chlorination reaction to form a second chlorination reaction product including at least one of 1,1,1,2,3-pentachloropropane or 1,1,2,2,3-pentachloropropane. This reaction product is reacted with a dehydrochlorination reagent in a second dehydrochlorination reaction to form a second dehydrochlorination reaction product having 1,1,2,3-tetrachloropropene or a 2,3,3,3-tetrachloropropene.
Gas phase preparation method of 1,1,2,3-tetrachloropropene
-
Paragraph 0029-0043, (2019/01/23)
The invention discloses a gas phase preparation method of 1,1,2,3-tetrachloropropene. Under the effect of a catalyst, 1,1,1,2,3-pentachloropropane is subjected to a gas-phase catalytic dehydrochlorination reaction, the reaction temperature is 150-250 DEG C, the contact time is 1-15 seconds, and a reaction product is collected and subjected to decompression rectification to obtain the 1,1,2,3-tetrachloropropene product. The method has the advantages that the process is simple, the catalyst is good in activity and long in service life, and the method is environmentally friendly and easy to industrialize.
Preparation method of 1,1,2,3-tetrachloropropene
-
Paragraph 0034; 0039; 0044; 0049; 0054; 0059, (2017/11/04)
The invention discloses a preparation method of 1,1,2,3-tetrachloropropene. The method comprises the steps of (1) reacting trichloromethane, 1,2-dichloroethylene and a first catalyst, cooling to room temperature after reaction is completed, adding water, carrying out vacuum rectification to obtain 1,1,2,3,3-pentachloropropane; (2) carrying out gas-phase catalytic dehydrochlorination reaction on the 1,1,2,3,3-pentachloropropane under the action of a second catalyst to obtain 1,2,3,3-tetrachloropropene; (3) carrying out gas-phase catalytic addition reaction on hydrogen chloride and the 1,2,3,3-tetrachloropropene under the action of a third catalyst to obtain 1,1,2,2,3-pentachloropropane; and (4) carrying out gas-phase catalytic dehydrochlorination reaction on the 1,1,2,2,3-pentachloropropane under the action of a fourth catalyst, collecting a reaction product and carrying out vacuum rectification to obtain the 1,1,2,3-tetrachloropropene. The preparation method is simple in process, available in raw materials, low in cost, high in yield, green and environment-friendly and is especially suitable for industrial production.