Bromine → 4-Chlorophthalic anhydride

HRID 1088440Notes

Reaction equation

HRID 1088440 reaction equation
[Cl:1][CH:2]1[CH:12]=[CH:11][CH:5]2[C:6]([O:8][C:9](=[O:10])[CH:4]2[CH2:3]1)=[O:7].BrBr>>[Cl:1][C:2]1[CH:3]=[C:4]2[C:9](=[O:10])[O:8][C:6](=[O:7])[C:5]2=[CH:11][CH:12]=1

Participants

3

Reactant 2

HCID 24408BromineHCID 54187688HCID 54187688, compound

Product 1

HCID 670444-Chlorophthalic anhydride

Procedure

A co-pending application, Ser. No. 07/405,606, discloses that 4-chlorotetrahydrophthalic anhydride reacts with elemental bromine to form 4-chlorophthalic anhydride. 4-Bromophthalic anhydride is sometimes found as a side product in low percentage, but is not economically recoverable.

Sources & evidence

ORD record
ord-cc51c67f4bbe4d78b1a4d1e5cf37cc2b
Source dataset
uspto-grants-1990_10
Patent number
US04962206

Reaction notes

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