摘要:
Disclosed in one embodiment is a process for the synthesis of 1,3,3,3-tetrafluoropropene that comprises (a) reacting a compound of formula (I) X1X2 with a compound of formula (II) CF3CH=CH2 to produce a reaction product comprising a compound of formula (III) CF3CHX1CH2X2, wherein X1 and X2 are each independently selected from the group consisting of hydrogen, chlorine, bromine and iodine, provided that X1 and X2 are not both hydrogen; (b) when X2 in formula (III) is not fluorine, fluorinating the compound of formula (III) to produce a reaction product comprising a compound of formula (III) wherein X1 is as described above and X2 is fluorine; and (c) exposing said compound of formula (III) to reaction conditions effective to convert said compound to 1,3,3,3,-tetrafluoropropene. In another embodiment, the process comprises (a) reacting chlorine with a compound of formula (I) CH3CH=CH2 to produce a reaction product comprising a compound of formula (II) CCI3CHC1CH2C1; (b) fluorinating the compound of formula (II) to produce a reaction product comprising a compound of formula (III) CF3CHC1CH2F; and (c) exposing said compound of said formula (III) to reaction conditions effective to convert said compound to 1,3,3,3-tetrafluoropropene.
摘要:
Disclosed is a process for the synthesis of 1,3,3,3-tetrafluoropropene that comprises reacting a compound of the formula (I) CHFX2 with a compound of formula (II) CH2=CF2 to produce a reaction product comprising a compound of formula (III) CHXFCH2CXF2, wherein each X is independently selected from the group consisting of chlorine, bromine and iodine, and exposing said compound of formula (III) to reaction conditions effective to convert said compound to 1,3,3,3-tetrafluoropropene.
摘要:
1-chloro-3,3-dimethylbutane is oxidized by dimethyl sulfoxide, in the presence of an effective amount of inorganic bromide or iodide, and in the presence of an effective amount of base, to produce 3,3-dimethylbutyraldehyde.
摘要:
Le 1,1,1,3,3-pentachlorobutane dont la fluoration conduit au 1,1,1,3,3-pentafluorobutane, est préparé avec un rendement et une sélectivité élevés par addition du tétrachlorure de carbone sur le 2-chloropropène en présence d'un sel de cuivre et d'une amine.
摘要:
The invention concerns a method for obtaining halogenated hydrocarbons comprising at least 3 carbon atoms which consists in reacting a haloalkane with a halogenated olefin in the substantial absence of nitrile and in introducing the reagents in mol ratio between the haloalkane and the halogenated olefin less than 2., thereby obtaining 1,1,1,3,3-pentachloropropane with a high volume yield power.
摘要:
The invention concerns a method for recovering a co-catalyst of an aqueous phase by treatment with a base and a step which consists in separating the co-catalyst whereby the co-catalyst is isolated from the aqueous phase treated with the base, typically by steam distillation or by distillation.
摘要:
A process for preparing a haloalkane comprising: (a) contacting a haloalkane starting material with a haloalkene starting material in the presence of an effective amount of a catalyst complex under conditions effective to facilitate an addition reaction and to form a product stream comprising a haloalkane product from said addition reaction, wherein said catalyst complex has a boiling point higher than that of said haloalkane product; and (b) recovering said haloalkane product from said product stream.
摘要:
1-chloro-3,3-dimethylbutane is oxidized by dimethyl sulfoxide, in the presence of an effective amount of inorganic bromide or iodide, and in the presence of an effective amount of base, to produce 3,3-dimethylbutyraldehyde.
摘要:
Die Erfindung betrifft ein Verfahren zur Herstellung von 1,3-Dichlorpropan durch Umsetzung von Bis(3-hydroxypropyl)ether mit Chlorwasserstoff, gegebenenfalls in Gegenwart von tertiären basischen Stickstoffverbindungen oder anderen tertiären aliphatischen Basen als Katalysatoren, Abdestillation des 1,3-Dichlorpropans und des Reaktionswassers und Aufarbeitung der beiden Phasen.
摘要:
A process for the preparation of halogenated alkanes is provided . In particular, a process is provided for the highly selective preparation of haloalkanes, including 1,1,1,3,3-pentachloropropane, pentachlorobutane, and hepatchlorohexane, in good yield.