Participants
| Role | Name | HCID | Charge |
|---|
| Reactant | Sulfuric Acid | HCID 1118 | — |
| Reactant | 4,4'-Difluoro-1,1'-biphenyl | HCID 9811 | — |
| Product | HCID 86612803 | HCID 86612803 | — |
Reaction Steps
The same procedure as 5a is used with 9.51 g dry 4,4′-difluorobiphenyl (50 mmole, fw=190.19) and 106.8 g 30% fuming sulfuric acid (400 mmole, fw=80.06) which are stirred at 30° C. for 24 hour and then heated with stirring at 110° C. for another 72 hours. Crystallization was effected using 29.6 g distilled water and 185 mL propionitrile. Yield was 17.2 g (65%) of the tetrasulfonated product as white crystals of the monohydrate.
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|
| Patent number | US08496835B2 |
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| Source dataset | uspto-grants-2013_07 |
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| ORD ID | ord-5359a6cc61084a3da0713e4777fe5a34 |
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| Source note | uspto-grants-2013_07 |
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