The problem to be solved by the present invention is to provide a novel method for producing a difluoromethylene compound. This problem is solved by a method for producing a difluoromethylene compound containing a CF.sub.2 moiety, the method comprising step A of mixing: a) a carbonyl compound containing a C(O) moiety; b) optionally an amine; c) a fluoride represented by the formula: MF, wherein M represents a Group 1 element of the periodic table; d) a halogenated fluorine compound represented by the formula: XF.sub.n, wherein X represents chlorine, bromine, or iodine, and n is a natural number of 1 to 5; and e) sulfur chloride.

The problem to be solved by the present invention is to provide a novel method for producing a difluoromethylene compound. This problem is solved by a method for producing a difluoromethylene compound containing a CF.sub.2 moiety, the method comprising step A of mixing: a) a carbonyl compound containing a C(O) moiety; b) optionally an amine; c) a fluoride represented by the formula: MF, wherein M represents a Group 1 element of the periodic table; d) a halogenated fluorine compound represented by the formula: XF.sub.n, wherein X represents chlorine, bromine, or iodine, and n is a natural number of 1 to 5; and e) sulfur chloride.

There are provided methods and systems related to use of one or more lanthanide halides in an electrochemical oxidation of metal halide in anolyte where the metal ion is oxidized from lower oxidation state to higher oxidation state at an anode; and then further use of the one or more lanthanide halides and the metal halide with the metal ion in the higher oxidation state in a halogenation reaction of an unsaturated hydrocarbon or a saturated hydrocarbon to form one or more products comprising halohydrocarbon.

There are provided methods and systems related to use of one or more lanthanide halides in an electrochemical oxidation of metal halide in anolyte where the metal ion is oxidized from lower oxidation state to higher oxidation state at an anode; and then further use of the one or more lanthanide halides and the metal halide with the metal ion in the higher oxidation state in a halogenation reaction of an unsaturated hydrocarbon or a saturated hydrocarbon to form one or more products comprising halohydrocarbon.

Processes for producing Z-1,1,1,4,4,4-hexafluorobut-2-ene and intermediates for producing same. A process for producing 2-chloro-1,1,1,4,4,4-hexafluorobutane comprises contacting 1,1,2,4,4-pentachlorobuta-1,3-diene with HF in the liquid phase in the presence of a fluorination catalyst. A process for producing 2,2-dichloro-1,1,1,4,4,4-hexafluorobutane comprises contacting 2-chloro-1,1,1,4,4,4-hexafluorobutane with a chlorine source. A process for producing 1,1,1,4,4,4-hexafluoro-2-butyne comprises contacting 2,2-dichloro-1,1,1,4,4,4-hexafluorobutane with a base. A process for producing Z-1,1,1,4,4,4-hexafluorobut-2-ene comprises contacting 1,1,1,4,4,4-hexafluoro-2-butyne with hydrogen.

Compositions based on F-1230za (1,1,3,3-tetrachloropropene), or on a mixture consisting of F-1230za and F-1230zd (1,3,3,3-tetrachloropropene), the manufacture thereof, and also the use thereof in particular for the production of F-1233zdE (trans-1-chloro-3,3,3-trifluoropropene), F-1234zeE (trans-1,3,3,3-tetrafluoropropene), and/or F-245fa (1,1,1,3,3-pentafluoropropane). A process for manufacturing the composition, the process including the following steps: reaction of carbon tetrachloride with ethylene to produce 1,1,1,3-tetrachloropropane (F-250fb); chlorination of F-250fb to obtain 1,1,1,3,3-pentachloropropane (F-240fa); dehydrochlorination of F-240fa to obtain 1,1,3,3-tetrachloropropene (F-1230za); one or more steps for separating out the F-1230za.

Compositions based on F-1230za (1,1,3,3-tetrachloropropene), or on a mixture consisting of F-1230za and F-1230zd (1,3,3,3-tetrachloropropene), the manufacture thereof, and also the use thereof in particular for the production of F-1233zdE (trans-1-chloro-3,3,3-trifluoropropene), F-1234zeE (trans-1,3,3,3-tetrafluoropropene), and/or F-245fa (1,1,1,3,3-pentafluoropropane). A process for manufacturing the composition, the process including the following steps: reaction of carbon tetrachloride with ethylene to produce 1,1,1,3-tetrachloropropane (F-250fb); chlorination of F-250fb to obtain 1,1,1,3,3-pentachloropropane (F-240fa); dehydrochlorination of F-240fa to obtain 1,1,3,3-tetrachloropropene (F-1230za); one or more steps for separating out the F-1230za.

The present invention relates to a process for the manufacturing of 1-aryl-1-trifluoromethylcyclopropanes, which serve as intermediates for the manufacturing of calcium T channel blockers of the general formula (A)

##STR00001##

which are described in WO 2015/186056.

The present invention relates to a process for the manufacturing of 1-aryl-1-trifluoromethylcyclopropanes, which serve as intermediates for the manufacturing of calcium T channel blockers of the general formula (A)

##STR00001##

which are described in WO 2015/186056.

The present invention relates to compositions based on F-1230za (1,1,3,3-tetrachloropropene), or on a mixture consisting of F-1230za and F-1230zd (1,3,3,3-tetrachloropropene), the manufacture thereof, and also the use thereof in particular for the production of F-1233zdE (trans-1-chloro-3,3,3-trifluoropropene), F-1234zeE (trans-1,3,3,3-tetrafluoropropene), and/or F-245fa (1,1,1,3,3-pentafluoropropane).