Hydrofluoric Acid → 2,2,3,3-Tetrafluoro-2,3-dihydro-1,4-benzodioxine

HRID 2211285Notes

Reaction equation

HRID 2211285 reaction equation
[FH:1].Cl[C:3]1([F:15])[O:8][C:7]2[CH:9]=[CH:10][CH:11]=[CH:12][C:6]=2[O:5][C:4]1([F:14])[F:13]>>[F:1][C:3]1([F:15])[O:8][C:7]2[CH:9]=[CH:10][CH:11]=[CH:12][C:6]=2[O:5][C:4]1([F:14])[F:13]

Participants

3

Reactant 2

HCID 14917Hydrofluoric AcidHCID 10857112HCID 10857112, compound

Product 1

HCID 27765882,2,3,3-Tetrafluoro-2,3-dihydro-1,4-benzodioxineYield 98%

Procedure

Subsequently, 140 ml/h of hydrogen fluoride (measured as liquid) and 110 g/h of 2-chloro-2,3,3-trifluorobenzodioxane were passed over the catalyst at 300° C. In the course of 6 hours, 600 g of 2,2,3,3-tetrafluorobenzodioxane were obtained. This corresponds to a yield of 98%.

Workup

  1. customwere passed over the catalyst at 300° C

Sources & evidence

ORD record
ord-4625c00c32a34fa09933f2733cfde8d2
Source dataset
uspto-grants-1995_10
Patent number
US05463088

Reaction notes

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