Manufacturing method of 1-chloro-2,3,3,3-tetrafluoropropene
There is provided an economically advantageous manufacturing method capable of efficiently obtaining 1-chloro-2,3,3,3-tetrafluoropropene by using 1,2-dichloro-2,3,3,3-tetrafluoropropane as a raw material. A manufacturing method of 1-chloro-2,3,3,3-tetrafluoropropene is characterized in that it includes subjecting 1,2-dichloro-2,3,3,3-tetrafluoropropane to a dehydrochlorination reaction in a liquid phase in a presence of a base.
1. A manufacturing method of 1-chloro-2,3,3,3-tetrafluoropropene, comprising;
subjecting 1,2-dichloro-2,3,3,3-tetrafluoropropane to a dehydrochlorination reaction at a reaction temperature of 50 to 100° C. in a liquid phase in the presence of a base.
2. The manufacturing method according to claim 1 , wherein
1,2-dichloro-2,3,3,3-tetrafluoropropane is subjected to the dehydrochlorination reaction in the liquid phase in the presence of a solvent to dissolve the base, and the base.
3. The manufacturing method according to claim 1 , wherein
the base is selected from a group consisting of a metal hydroxide, a metal oxide, and a metal carbonate, or a mixture thereof.
4. The manufacturing method according to claim 1 , wherein
the base is used in a ratio of 0.2 to 2.5 mol with respect to 1 mol of the 1,2-dichloro-2,3,3,3-tetrafluoropropane.
5. The manufacturing method according to claim 1 , wherein
a reaction temperature in the dehydrochlorination reaction is 60 to 100° C.
6. The manufacturing method according to claim 2 , wherein
the solvent is water.
7. The manufacturing method according to claim 2 , wherein
an amount of the base is 10 to 50 mass % with respect to total mass of the solvent and the base.
8. The manufacturing method according to claim 1 , wherein
the dehydrochlorination reaction is performed in a presence of a phase-transfer catalyst.
9. The manufacturing method according to claim 8 , wherein
the phase-transfer catalyst is a quaternary ammonium salt.
10. The manufacturing method according to claim 9 , wherein
the quaternary ammonium salt is selected from a group consisting of tetra-n-butylammonium chloride, tetra-n-butylammonium bromide, and methyltri-n-octylammonium chloride, or a mixture thereof.
11. The manufacturing method according to claim 1 , further comprising;
reacting 2,3,3,3-tetrafluoropropene with chlorine to produce 1,2-dichloro-2,3,3,3-tetrafluoropropane.
12. The manufacturing method according to claim 11 , wherein
a reaction of the 2,3,3,3-tetrafluoropropene and chlorine is caused under irradiation of light in a wavelength region of 400 to 750 nm.