Pentachloropyridine → 2,3,5,6-Tetrachloropyridine

HRID 128369Notes

Reaction equation

HRID 128369 reaction equation
[Cl:1][C:2]1[N:7]=[C:6]([Cl:8])[C:5]([Cl:9])=[C:4](Cl)[C:3]=1[Cl:11].S([O-])([O-])(=O)=O.[NH4+].[NH4+]>[Zn]>[Cl:8][C:6]1[C:5]([Cl:9])=[CH:4][C:3]([Cl:11])=[C:2]([Cl:1])[N:7]=1

Participants

4

Reactant 2

HCID 16584PentachloropyridineHCID 6097028Ammonium Sulfate

Product 1

HCID 169902,3,5,6-TetrachloropyridineYield 93.1%

Reagents, catalysts & solvents 1

HCID 23994ZincCatalyst

Procedure

On reaction of 12.76 g (0.05 mol) of pentachloropyridine with 4.1 g (0.063 gram atom) of zinc dust and 11.6 g (0.08 mol) of ammonium sulfate using the method described in Example 1, there is obtained 10.1 g (92% of theory) of crude 2,3,5,6-tetrachloropyridine, which contains, according to gas-chromatographical analysis, 92% of 2,3,5,6-tetrachloropyridine, 3.3% of 2,3,5-trichloropyridine, 1.3% of 2,3,6-trichloropyridine and 2.9% of pentachloropyridine.

Sources & evidence

ORD record
ord-d0cc213a3ad34b31a93c49ceb17fd77f
Source dataset
uspto-grants-1981_03
Patent number
US04259495

Reaction notes

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