Water → HCID 23460502, compound

HRID 2286905Notes

Reaction equation

HRID 2286905 reaction equation
[Cl:1][C:2]1[CH:3]=[CH:4][C:5]2[C:6](=[O:18])[C:7]3[C:12]([O:13][C:14]=2[CH:15]=1)=[C:11]([O:16]C)[CH:10]=[CH:9][CH:8]=3.B(Br)(Br)Br.O>ClCCl>[Cl:1][C:2]1[CH:3]=[CH:4][C:5]2[C:6](=[O:18])[C:7]3[C:12]([O:13][C:14]=2[CH:15]=1)=[C:11]([OH:16])[CH:10]=[CH:9][CH:8]=3

Participants

5

Reactant 3

HCID 962WaterHCID 25134Boron tribromideHCID 234605153-Chloro-5-methoxyxanthone

Product 1

HCID 23460502HCID 23460502, compound

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

To a solution of 3-chloro-5-methoxyxanthone (12.5 g.) [see Examples 32 and 33] in dry dichloromethane at 0° C. is slowly added boron tribromide (24 ml.). The mixture is stirred at room temperature for 24 hours, then poured into water. The resulting precipitate is filtered off and dried to give 3-chloro-5-hydroxyxanthone which is used without further purification.

Workup

  1. customat 0° C.
  2. filtrationThe resulting precipitate is filtered off
  3. customdried

Sources & evidence

ORD record
ord-8770f71bbe7a4c6f873d7efdf3afd8b8
Source dataset
uspto-grants-1981_05
Patent number
US04268514

Reaction notes

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