- PROCESSES FOR PREPARING PENTACHLOROPROPANE AND TETRACHLOROPROPENE FROM DICHLOROPROPENE
-
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.
- -
-
Paragraph 0090
(2022/04/03)
-
- PREPARATION OF 2,3,3,3-TETRAFLUOROPROPENE AND INTERMEDIATES THEREOF
-
The present invention provides a process for preparation of 2,3,3,3-tetrafluoropropene and intermediates thereof. Owing to its low global warming potential and zero ozone depleting potential, it is been proposed as a replacement for existing chlorofluorocarbons and hydrofluorocarbons as refrigerant.
- -
-
Page/Page column 13
(2020/05/15)
-
- GALLIUM CATALYZED DEHYDROCHLORINATION OF A CHLORINATED ALKANE
-
The present invention provides processes for the preparation of a chlorinated alkene from a chloroalkane starting material, at least one Lewis acid catalyst comprising at least one of gallium metal, a salt of gallium, a gallium alloy, or combinations thereof, and optionally a solvent.
- -
-
Paragraph 0065; 0068
(2020/03/15)
-
- Method for eliminating hydrogen chloride by catalytic cracking of chloralkane
-
The invention discloses a method for eliminating hydrogen chloride by catalytic cracking of chloralkane, comprising the following steps of: carrying out a cracking reaction on chloralkane under the action of a biomass-based nitrogen-doped carbon catalyst to eliminate hydrogen chloride so as to prepare corresponding olefin, wherein the biomass-based nitrogen-doped carbon catalyst is prepared by carbonizing biomass or a mixture of biomass and a nitrogen source at 400-1000 DEG C, and the biomass is selected from at least one of bamboo processing leftovers, wood processing leftovers, plant straws,plant leaves, cereals, beans, cereal processing leftovers, bean processing leftovers and livestock manure. The method disclosed by the invention has the advantages of simple preparation process, easily available raw materials, low cost, strong process controllability, easiness in large-scale production, high catalytic cracking conversion rate of the chloralkane, high product selectivity, low energy consumption and the like.
- -
-
Paragraph 0118-0123
(2020/08/06)
-
- METHOD FOR THE PRODUCTION OF A HALOGENATED ALKENE BY CATALYZED DEHYDROHALOGENATION OF A HALOGENATED ALKANE
-
The present invention provides methods for the preparation of halogenated alkenes from halogenated alkanes using a homogeneous catalyst.
- -
-
Paragraph 0083-0084
(2019/10/29)
-
- PROCESSES FOR THE DEHYDROCHLORINATION OF A CHLORINATED ALKANE
-
The present invention provides a process for the dehydrochlorination of a chlorinated alkane to produce a chlorinated alkene. In particular, the processes comprise contacting a chlorinated alkane, a base, and a phase transfer catalyst.
- -
-
Paragraph 0043; 0044
(2018/03/28)
-
- Method of making 1,1,1,2,3-pentachloropropane
-
The present invention provides a method of making 1,1,1,2,3-pentachloropropane comprising: (1) utilizing 1,1,1,3-tetrachloropropane as a raw material and 1,1,1,2,3-pentachloropropane as a solvent to carry out a dehydrochlorination reaction to obtain 1,1,3-trichloropropene, and after the reaction, (2) introducing chlorine gas into the reaction system to carry out a chlorination reaction to obtain 1,1,1,2,3-pentachloropropane. In the present invention, 1,1,1,2,3-pentachloropropane acts as a solvent or a diluent, and may act as an inhibitor to prevent the production of high-boiling residues such as dimers, oligomers or polymers during the dehydrochlorination process. Then, the conversion rate of 1,1,1,3-tetrachloropropane is increased, and consequently, the yield of final product 1,1,1,2,3-pentachloropropane is also increased. The preparation method of the present invention can be used in an batch reaction mode, and can also be used in a continuous reaction process, and is suitable for industrial production, thus having a wide range of possible applications.
- -
-
Page/Page column 10; 11
(2018/07/29)
-
- A method of synthesizing 2,3,3,3-tetrafluoropropene
-
A method of synthesizing 2,3,3,3-tetrafluoropropene is disclosed. The method includes (1) reacting 1,1,1,3-tetrachloropropane with metal powder, and subjecting a reaction solution to alkali washing, drying and rectification to obtain trichloropropylene, (2) mixing the trichloropropylene prepared in the step (1) with a solvent, feeding a fluorine-nitrogen mixed gas, reacting, and rectifying the reaction solution to obtain difluorotrichloropropane, and (3) reacting the difluorotrichloropropane prepared by the step (2) with anhydrous hydrogen fluoride under an action of a catalyst, and subjecting a reaction product to alkali washing, drying and compression to obtain a 2,3,3,3-tetrafluoropropene product. The method has advantages of a simple process, a low cost and environment protection.
- -
-
Paragraph 0031; 0032; 0035; 0036; 0039; 0040; 0043; 0044
(2017/08/27)
-
- Study of the synthesis, antiviral bioactivity and interaction mechanisms of novel chalcone derivatives that contain the 1,1-dichloropropene moiety
-
A series of novel chalcone derivatives that contain the 1,1-dichloropropene moiety was designed and synthesized. Bioactivity assays showed that most of the target compounds exhibited moderate to good antiviral activity against tobacco mosaic virus (TMV) at 500?μg/mL. Among the target compounds, compound 7h showed the highest in vivo inactivation activity against TMV with the EC50 and EC90 value of 45.6 and 327.5?μg/mL, respectively, which was similar to that of Ningnanmycin (46.9 and 329.4?μg/mL) and superior to that of Ribavirin (145.1 and 793.1?μg/mL). Meanwhile, the microscale thermophoresis and fluorescence spectroscopy experiments showed that the compound 7h had a strong interaction with the tobacco mosaic virus coat protein.
- Dong, Liang-Run,Hu, De-Yu,Wu, Zeng-Xue,Chen, Ji-Xiang,Song, Bao-An
-
supporting information
p. 1566 - 1570
(2017/07/17)
-
- Dihalopropenyl ether compounds,d and preparation and application thereof
-
The invention discloses dihalopropenyl ether compounds, preparation and application thereof. The compound is shown in a formula (I), wherein Q, R, R1, R2, R3, R4, R5, n, and v in the formula are defined in the description. The compounds shown in the formula (I) have insecticidal and/or bactericidal biological activity, and has very high activity particularly on pests such as mythimna separata and plutella xylostella.
- -
-
Paragraph 0073-0074
(2017/11/16)
-
- Two chlorine alkene propyl ether compound, insecticide and its application
-
The invention discloses a dichlorallyl ether compound which is a compound with the structure shown by a general formula (1) in the specification. The invention also provides an insecticide containing the compound and an application of the insecticide in pest control. The dichlorallyl ether compound disclosed by the invention has good insecticidal activity and particularly excellent insecticidal activity against the pests such as lepidopteran cotton bollworm, plutella xylostella, prodenia litura and beet armyworm.
- -
-
Paragraph 0095; 0096; 0097
(2018/01/11)
-
- Dichloroallyl ether compound, preparation method and applications thereof
-
The present invention discloses a dichloroallyl ether compound represented by a formula (I), a preparation method and applications thereof, wherein in the formula (I), Q, R1, R2, R3, R4, R5, R6, R7, n, X, Y and Z are defined in the specification. According to the present invention, the compound represented by the formula (I) has insecticidal and/or anti-mite and antibacterial biological activity, and especially provides high activities for leucania separata walker, diamondback moth and other pests.
- -
-
Paragraph 0157; 0158
(2016/10/08)
-
- Chalcone derivate with 1,1-dichloropropene and preparation method and application thereof
-
The invention discloses a chalcone derivate with 1,1-dichloropropene and a preparation method and application thereof. The general structural formula of the chalcone derivate is shown in the description. R is a benzene ring, a substituted aromatic ring and a heterocyclic ring, the ortho-position, meta-position and para-position of the aromatic ring contain one or more of methyl, methoxyl, trifluoromethyl, trifluoromethoxy, nitryl and halogen atoms, halogen atoms can be fluorine, chlorine and bromine, and the heterocyclic ring is a five-membered heterocyclic ring. The chalcone derivate with the 1,1-dichloropropene can improve biological activity, is low in toxicity and environmentally friendly and can be used for pesticides used for preventing and treating the tobacco mosaic virus.
- -
-
Paragraph 0016
(2016/10/08)
-
- SYNTHESIS OF 1,1,2,3-TETRACHLOROPROPENE
-
The present invention provides an improved process for producing 1,1,2,3-tetrachloropropene. By using a first reactive distillation column for HCC-250fb dehydrochlorination, and a second reactive distillation column for HCC-240db dehydrochlorination/HCC-1230xf isomerization, the 1,1,2,3-tetrachloropropene manufacturing process can be greatly simplified, resulting in reduced equipment use, energy use, as well as increased productivity.
- -
-
Paragraph 0043; 0044
(2014/08/19)
-
- METHODS FOR THE DEHYDROCHLORINATION OF 1,1,1,3-TETRACHLOROPROPANE TO 1,1,3-TRICHLOROPROPENE
-
This invention relates to a method to improve 1,1,3-trichloropropene selectivity in HCC-250fb (1,1,1,3-tetrachloropropane) dehydrochlorination. In normal practice, FeCl3 is used as the catalyst for the dehydrochlorination of HCC-250fb to produce 1,1,3-tri-chloropropene. In this invention as source of water is added into the reaction system to inhibit the formation of high boiling compounds such as pentachlorocyclohexene and/or hexachlorocyclohexane. Once source of water is H2O itself. Another source of water is one or more hydrated metal halides.
- -
-
Paragraph 0031
(2014/09/03)
-
- PROCESS FOR PREPARING 2,3,3,3-TETRAFLUOROPROPENE
-
The present invention provides a method for efficiently preparing 2,3,3,3-tetrafluoropropene (HFO-1234yf) by a simple and economically advantageous method that is suitable for implementation on an industrial scale. The present invention provides a process for preparing 2,3,3,3-tetrafluoropropene, comprising the step of: (1) in a reactor, (1-1) reacting 1,1,1,2,3-pentachloropropane with hydrogen fluoride in an amount of 10 to 100 mol per mole of the 1,1,1,2,3-pentachloropropane 1; (1-2) in the presence of chromic oxide represented by composition formula: CrOm (1.5m3) or fluorinated chromic oxide obtained by fluorinating the chromic oxide; (1-3) in the presence of oxygen in an amount of 0.02 to 1 mol per mole of the 1,1,1,2,3-pentachloropropane; and (1-4) in the gas phase within a temperature range of 320 to 390 degrees centigrade, thereby obtaining a reaction product containing 2,3,3,3-tetrafluoropropene.
- -
-
Page/Page column 12-13
(2013/03/26)
-
- METHOD FOR PRODUCING A CHLORINATED HYDROCARBON HAVING 3 CARBON ATOMS
-
A method of producing a chlorinated hydrocarbon having 3 carbon atoms, comprising a conversion step for converting a chloropropane represented by the following formula (1) into a chloropropane represented by the following formula (2) by reacting it with chlorine in the presence of anhydrous aluminum chloride. CCl3—CCl(2-m)Hm—CCl(3-n)Hn??(1) (In the above formula (1), m is 1 or 2, and n is an integer of 0 to 3.) CCl3—CCl(3-m)H(m-1)—CCl(3-n)Hn??(2) (In the above formula (2), m and n are the same integers as in the formula (1), respectively.)
- -
-
Paragraph 0114
(2013/07/05)
-
- PROCESS FOR PREPARING CHLORINE-CONTAINING FLUOROCARBON COMPOUND
-
The present invention provides a process for preparing at least one chlorine-containing fluorocarbon compound selected from the group consisting of chlorine-containing fluoropropane compounds represented by Formula (1): CFnCl3-nCHClCH2—Cl, wherein n is 1 or 2, and chlorine-containing fluoropropene compounds represented by Formula (2): CFnCl3-nCCl═CH2, wherein n is 1 or 2, wherein the process includes the step of contacting at least one chlorine-containing compound selected from the group consisting of 1,1,1,2,3-pentachloropropane, 1,1,2,3-tetrachloropropene, and 2,3,3,3-tetrachloropropene with hydrogen fluoride in the absence of a catalyst while heating. According to the present invention, the chlorine-containing propane and propene compounds having 1 or 2 fluorine atoms can be prepared by an industrially applicable, simple and effective process.
- -
-
Page/Page column 4
(2012/03/27)
-
- METHOD FOR PRODUCING 1,1,3-TRICHLORO-1-PROPENE
-
A production method of 1,1,3-trichloro-1-propene comprising the following steps A and B; Step A: 1,1,1,3-tetrachloropropane is dehydrochlorinated at a temperature between 30° C. and 50° C. in the presence of at least one base selected from the group consisting of alkali metal hydroxides and alkaline earth metal hydroxides, and a phase transfer catalyst, Step B: 3,3,3-trichloro-1-propene obtained in the step A is isomerized into 1,1,3-trichloro-1-propene in the presence of a metal catalyst.
- -
-
Page/Page column 4; 5
(2012/06/16)
-
- PROCESS OF MAKING A CHLORINATED HYDROCARBON
-
A process of making a chlorinated hydrocarbon through a thermal dehydrochlorination step in which an unsaturated compound represented by the following general formula (2) is obtained by thermally decomposing a saturated compound represented by the following general formula (1). [in-line-formulae]CCl3—CCl2-mHm—CCl3-nHn??(1)[/in-line-formulae] [in-line-formulae]CCl2═CCl2-mHm-1—CCl3-nHn??(2)[/in-line-formulae] (in the above formulas, m is 1 or 2, and n is an integer of 0 to 3.)
- -
-
Page/Page column 12
(2012/03/12)
-
- SYNTHESIS OF 1,1,3-TRICHLORO-1-PROPENE
-
Disclosed is a process for the dehydrochlorination of 1,1,1,3-tetrachloropropane comprising contacting 1,1,1,3,tetrachloropropane in the vapor phase in a reaction zone with a catalyst comprising iron, to produce a product mixture comprising 1,1,3-trichloro-1-propene; and recovering said 1,1,3-trichloro-1-propene from the product mixture produced. Also disclosed is a process for the dehydrochlorination of 1,1,1,3-tetrachloropropane comprising heating 1,1,1,3-tetrachloropropane in the liquid phase to produce a mixture comprising 1,1,3-trichloro-1-propene, cooling said mixture, separating hydrogen chloride from said mixture and recovering 1,1,3-trichloro-1-propene.
- -
-
Page/Page column 6-7
(2012/06/16)
-
- PROCESS FOR PREPARING 1,1,2,3-TETRACHLOROPROPENE
-
The present invention provides a process for preparing 1,1,2,3-tetrachloropropene, including heating 1,1,1,2,3-pentachloropropane in a gas phase in the absence of a catalyst to carry out a dehydrochlorination reaction. According to the process of the present invention, 1,1,2,3-tetrachloropropene (HCC-1230xa) can be efficiently produced by a simple and economically advantageous method that is suitable for industrial-scale production.
- -
-
Page/Page column 10
(2011/06/23)
-
- PROCESS FOR THE PRODUCTION OF CHLORINATED AND/OR FLUORINATED PROPENES
-
The present invention provides one-step processes for the production of chlorinated and/or fluorinated propenes. The processes provide good product yield with low, e.g., less than about 20%, or even less than 10%, concentrations of residues/by-products. Advantageously, the processes may be conducted at low temperatures than 500° C. so that energy savings are provided, and/or at higher pressures so that high throughputs may also be realized. The use of catalysts or initiators may provide additional enhancements to conversion rates and selectivity, as may adjustments to the molar ratio of the reactants.
- -
-
Page/Page column 8
(2011/04/25)
-
- PROCESS FOR PREPARING 2-CHLORO-3,3,3-TRIFLUOROPROPENE
-
The present invention provides a process for preparing 2-chloro-3,3,3-trifluoropropene including subjecting, in the absence of a catalyst, at least one chlorine-containing compound selected from the group consisting of chloropropane represented by formula (1): CClX2CHClCH2Cl, wherein each X is the same or different and each represents Cl or F, chloropropene represented by formula (2): CClY2CCl=CH2, wherein each Y is the same or different and each represents Cl or F, and chloropropene represented by formula (3): CZ2=CClCH2Cl, wherein each Z is the same or different and each represents Cl or F, to a reaction with hydrogen fluoride under heating in a gas phase. According to the present invention, 2-chloro-3,3,3-trifluoropropene (HCFC-1233xf) can be effectively prepared by an easy and economically advantageous process that is suitable for industrial scale production.
- -
-
Page/Page column 10; 11
(2010/11/05)
-
- PROCESS FOR PREPARING CHLORINE-CONTAINING FLUOROCARBON COMPOUND
-
The present invention provides a process for preparing at least one chlorine-containing fluorocarbon compound selected from the group consisting of chlorine-containing fluoropropane compounds represented by Formula (1) : CFnCl3-nCHClCH2Cl, wherein n is 1 or 2, and chlorine-containing fluoropropene compounds represented by Formula (2) : CFnCl3-nCCl=CH2, wherein n is 1 or 2, wherein the process includes the step of contacting at least one chlorine-containing compound selected from the group consisting of 1, 1, 1, 2, 3-pentachloropropane, 1, 1, 2, 3-tetrachloropropene, and 2, 3, 3, 3-tetrachloropropene with hydrogen fluoride in the absence of a catalyst while heating. According to the present invention, the chlorine- containing propane and propene compounds having 1 or 2 fluorine atoms can be prepared by an industrially applicable, simple and effective process.
- -
-
Page/Page column 11-12
(2010/12/17)
-
- METHODS OF MAKING CHLORINATED HYDROCARBONS
-
Methods for the manufacture of 1,1,1,2,3-pentachloropropane from 1,1,1,3-tetrachloropropane and chlorine are disclosed. Improved methods are provided for the manufacture of 1,1,2,3-tetrachloropropene from 1,1,1,2,3-pentachloropropane. Methods are also disclosed for the manufacture of 1,1,2,3-tetrachloropropene from 1,1,1,3-tetrachloropropane and chlorine and for the manufacture of 1,1,2,3-tetrachloropropene from carbon tetrachloride, ethylene, and chlorine.
- -
-
Page/Page column 28
(2009/08/14)
-
- MANUFACTURE OF DICHLOROPROPANOL
-
Manufacture of dichloropropanol Process for manufacturing dichloropropa nol wherein a glycerol-based product comprising at least one diol containi ng at least 3 carbon atoms other than 1,2- propanediol, is reacted with a chlorinati ng agent, and of products derived from dichloropropanol such as ep ichlorohydrin and epoxy resins. No figure.
- -
-
Page/Page column 19-21
(2009/03/07)
-
- TWO ROUTES OF PROPENE CONVERSION INTO PERCHLORO DERIVATIVES BY THE ACTION OF HYDROGEN CHLORIDE AND OXYGEN.
-
Destructive catalytic conversions of propene by the action of hydrogen chloride and oxygen are of complex character and may proceed by several routes, depending on the oxygen and hydrogen chloride contents in the reactants. Elucidation of the character of these routes is of practical interest, and is necessary for selection of the process conditions. In view of this , the influence of the hydrogen chloride:propene ration on the process was studied in the ranges from 0 to 6 (contract time 2 sec) and from 6 to 12 (contact time 5 sec) at the constant stoichiometric ratio HCl:O//2 equals 2. The interaction of propene with hydrogen chloride at HCl:C//3H//6 ratios from 6 to 12 (Fig. lb) has certain peculiarities, with chlorinolysis of hexachloropropene. However, at HCl:C//3H//6 ratios from 9 to 10. 5 acrolein is formed and then converted into various compounds with evolution of the corresponding amounts of carbon monoxide. It is shown that the conversions of propene into various compounds proceed by two routes, with intermediate formation of allyl chloride and acrolein.
- Potapov
-
p. 1773 - 1774
(2007/10/02)
-