Hydrofluoric Acid → HCID 86738398, compound

HRID 1155752Notes

Reaction equation

HRID 1155752 reaction equation
F.[F:2]C1N=C(F)N=C(Cl)N=1.F.FC1N=C(F)N=C(Cl)N=1.[F:21][C:22]1[N:27]=[C:26]([Cl:28])[N:25]=[C:24]([Cl:29])[N:23]=1>>[FH:2].[F:21][C:22]1[N:27]=[C:26]([Cl:28])[N:25]=[C:24]([Cl:29])[N:23]=1

Participants

5

Reactant 4

HCID 14917Hydrofluoric AcidHCID 20537880HCID 20537880, compoundHCID 232339542-Chloro-4,6-difluoro-1,3,5-triazineHCID 86738399HCID 86738399, compound

Product 1

HCID 86738398HCID 86738398, compound

Procedure

If 2,4-difluoro-6-chloro-s-triazine or 2-fluoro-4,6-dichloro-s-triazine is used in place of cyanuric chloride as the starting material, very good yields of pure cyanuric fluoride are possible even with molar ratios of hydrogen fluoride/cyanuric halide which are lower than those mentioned above. For example, when 2,4-difluoro-6-chloro-s-triazine is used the reaction is advantageously carried out with a molar ratio of hydrogen fluoride/2,4-difluoro-6-chloro-s-triazine of 1:1 to 4:1, preferably about 2:1; if 2-fluoro-4,6-dichloro-s-triazine is used as the starting material, advantageous results are obtained with a molar ratio of hydrogen fluoride/2-fluoro-4,6-dichloro-s-triazine of 2:1 to 5:1 and preferably the reaction is carried out using a molar ratio of hydrogen fluoride/2-fluoro-4,6-dichloro-s-triazine of 3:1. When 2,4-difluoro-6-chloro-s-triazine or 2-fluoro-4,6-dichloro-s-triazine is used as the starting material, the reaction is also carried out at temperatures betwen 150° C. and 300° C.; preferably the reaction is carried out at between 180° C. and 220° C., as when cyanuric chloride is used as the starting material. Pure cyanuric fluoride is likewise obtaining in high yield when a mixture of 2,4-difluoro-6-chloro-s-triazine and 2-fluoro-4,6-dichloro-s-triazine or a mixture of cyanuric chloride, 2,4-difluoro-6-chloro-s-triazine and 2-fluoro-4,6-dichloro-s-triazine is employed, in place of cyanuric chloride, 2,4-difluoro-6-chloro-s-triazine or 2-fluoro-4,6-dichloro-s-triazine, as the starting material. In this case the most advantageous molar ratio of hydrogen fluoride/cyanuric halide mixture depends on the mixing ratio of the two or the three cyanuric halide components in the starting mixture. The most advantageous temperature range for the reaction when a mixture of cyanuric halides is used is the same as that when pure cyanuric chloride is employed as the starting material.

Workup

  1. customadvantageous results

Sources & evidence

ORD record
ord-1b52aebdf88549498fc0b415f56f3a7f
Source dataset
uspto-grants-1982_06
Patent number
US04332939

Reaction notes

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