Hydrogen Bromide → HCID 135665334, compound

HRID 1781857Notes

Reaction equation

HRID 1781857 reaction equation
C[O:2][C:3]1[CH:4]=[C:5]([C:14]2[CH:19]=[CH:18][CH:17]=[CH:16][N:15]=2)[CH:6]=[C:7]([N+:11]([O-:13])=[O:12])[C:8]=1[O:9]C.[BrH:20]>>[BrH:20].[N+:11]([C:7]1[CH:6]=[C:5]([C:14]2[CH:19]=[CH:18][CH:17]=[CH:16][N:15]=2)[CH:4]=[C:3]([OH:2])[C:8]=1[OH:9])([O-:13])=[O:12]

Participants

3

Reactant 2

HCID 260Hydrogen BromideHCID 21459007HCID 21459007, compound

Product 1

HCID 135665334HCID 135665334, compound

Procedure

1.5 g of 2-(3,4-dimethoxy-5-nitrophenyl)pyridine are dissolved in 30 ml of 48 percent aqueous hydrobromic acid. The reaction mixture is stirred at 100° for 16 hours and at 23° for 18 hours. The precipitate which thereby forms is filtered and recrystallized from methanol/ether. There is obtained 3-nitro-5-(2-pyridyl)pyrocatechol hydrobromide of m.p. 239°-240°.

Workup

  1. filtrationThe precipitate which thereby forms is filtered
  2. customrecrystallized from methanol/ether

Sources & evidence

ORD record
ord-838bd3f68ff148658102a71548dbeabb
Source dataset
uspto-grants-1997_05
Patent number
US05633371

Reaction notes

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