Pyridine → Borate(1-), tetrafluoro-, hydrogen, compd. with pyridine (1:1:1)

HRID 1525639Notes

Reaction equation

HRID 1525639 reaction equation
[F:1][B-:2]([F:5])([F:4])[F:3].[H+].[N:7]1[CH:12]=[CH:11][CH:10]=[CH:9][CH:8]=1>>[F:1][B-:2]([F:5])([F:4])[F:3].[NH+:7]1[CH:12]=[CH:11][CH:10]=[CH:9][CH:8]=1

Participants

3

Reactant 2

HCID 1049PyridineHCID 28118Tetrafluoroboric acid

Product 1

HCID 11019233Borate(1-), tetrafluoro-, hydrogen, compd. with pyridine (1:1:1)Yield 62%

Procedure

Tetrafluoroboric acid (250 ml, 2.00 mol) was added to cool (0° C.) pyridine (157.7 ml, 1.95 mol) and within 25 min a colorless precipitate was obtained. After the acid was completely added the mixture was further stirred for 30 min at the same temperature. Then the reaction mixture was filtered. The residue was washed twice with cold ethanol and dried 12 h at high vacuum to yield 201.9 g (60%) pyridiniumtetrafluoroborate as colorless crystals.

Workup

  1. customwithin 25 min a colorless precipitate was obtained
  2. additionAfter the acid was completely added the mixture
  3. filtrationThen the reaction mixture was filtered
  4. washThe residue was washed twice with cold ethanol
  5. customdried 12 h at high vacuum

Sources & evidence

ORD record
ord-2276f2b332ac44709ebb2e2b240805ef
Source dataset
uspto-grants-2015_07
Patent number
US09085535B2

Reaction notes

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