Hydrogen Bromide → 6-Hydroxy-3,4-dihydro-1(2H)-naphthalenone

HRID 477209Notes

Reaction equation

HRID 477209 reaction equation
C[O:2][C:3]1[CH:4]=[C:5]2[C:10](=[CH:11][CH:12]=1)[C:9](=[O:13])[CH2:8][CH2:7][CH2:6]2.Br>>[OH:2][C:3]1[CH:4]=[C:5]2[C:10](=[CH:11][CH:12]=1)[C:9](=[O:13])[CH2:8][CH2:7][CH2:6]2

Participants

3

Reactant 2

HCID 260Hydrogen BromideHCID 141126-Methoxy-alpha-tetralone

Product 1

HCID 46794946-Hydroxy-3,4-dihydro-1(2H)-naphthalenone

Procedure

2 mols of 6-methoxy-1-tetralone are heated at 125° C. in 2 l of 48% strength aqueous hydrobromic acid for 3 hours. On cooling, the product precipitates and is filtered off with suction and dried. If necessary, it can be recrystallized from water.

Workup

  1. temperatureOn cooling
  2. customthe product precipitates
  3. filtrationis filtered off with suction
  4. customdried
  5. customIf necessary, it can be recrystallized from water

Sources & evidence

ORD record
ord-e59602756e1d4c048ec37d98d2fea1b1
Source dataset
uspto-grants-1989_12
Patent number
US04886898

Reaction notes

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