10436-39-2Relevant articles and documents
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Hatch,McDonald
, p. 3328 (1952)
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PROCESSES FOR PREPARING PENTACHLOROPROPANE AND TETRACHLOROPROPENE FROM DICHLOROPROPENE
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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.
METHOD FOR PRODUCING 2-CHLORO-3,3,3-TRIFLUOROPROPENE
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Paragraph 0027, (2019/02/13)
The invention relates to a method for producing 2-chloro-3,3,3-trifluoropropene (HCFO-1233xf) from at least one compound A selected from the group consisting of halopropane of formulae CX3CHClCH2X or CX3CFClCH3, or halopropenes of formula CQX2CCNCH2 and CX2═CClCH2X where X independently represents a fluorine or chlorine atom, characterised in that it comprises bringing said at least one compound A into contact with HF in a gaseous phase in the presence of a fluorination catalyst AlF3 or fluorine-bearing alumina in order to form a gaseous flow B comprising 2-chloro-3,3,3-trifluoropropene (HCFO-1233xf) et 3,3,3-trifluoropropene (HFO-1243zf).
Preparation method of 1,1,2,3-tetrachloropropene
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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.