Tributylvinyltin → 5-Ethenyl-2-fluoro-pyridine

HRID 545658Notes

Reaction equation

HRID 545658 reaction equation
[F:1][C:2]1[CH:7]=[CH:6][C:5](Br)=[CH:4][N:3]=1.[CH2:9]([Sn](CCCC)(CCCC)C=C)[CH2:10]CC>C1(C)C=CC=CC=1.C1C=CC([P]([Pd]([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)[P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)=CC=1>[F:1][C:2]1[CH:7]=[CH:6][C:5]([CH:9]=[CH2:10])=[CH:4][N:3]=1

Participants

5

Reactant 2

HCID 81998TributylvinyltinHCID 27831685-Bromo-2-fluoropyridine

Product 1

HCID 574168425-Ethenyl-2-fluoro-pyridine

Reagents, catalysts & solvents 2

HCID 178418397HCID 178418397, compoundCatalystHCID 1140TolueneSolvent

Procedure

A mixture of 7.0 g (0.04 mole) 2-fluoro-5-bromopyridine, 15.3 g (0.048 mole) tributyl(vinyl)stannane, 2.5 g (0.002 mole) tetrakis(triphenylphosphine)palladium in 70 ml toluene was boiled with reflux during 16 hours. Toluene was evaporated with a 30 cm column. The residue was fractionated twice.

Workup

  1. temperaturewith reflux during 16 hours
  2. customToluene was evaporated with a 30 cm column

Sources & evidence

ORD record
ord-76c948e7cfbe453dae44294a5d0568bd
Source dataset
uspto-grants-2011_05
Patent number
US07935823B2

Reaction notes

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