Hydrochloric Acid → biphenyl-3,3',4,4'-tetracarboxylic acid

HRID 1053535Notes

Reaction equation

[C:1]([C:5]1[CH:6]=[C:7]([C:15]2[CH:20]=[CH:19][C:18]([C:21]([OH:23])=[O:22])=[C:17]([C:24]([OH:26])=[O:25])[CH:16]=2)[CH:8]=[CH:9][C:10]=1[C:11]([O:13]C)=[O:12])([O:3]C)=[O:2].Cl>>[C:7]1([C:15]2[CH:20]=[CH:19][C:18]([C:21]([OH:23])=[O:22])=[C:17]([C:24]([OH:26])=[O:25])[CH:16]=2)[CH:8]=[CH:9][C:10]([C:11]([OH:13])=[O:12])=[C:5]([C:1]([OH:3])=[O:2])[CH:6]=1

Participants

Reactant 2

HCID 313Hydrochloric Acid

HCID 67129843HCID 67129843, compound

Product 1

HCID 759394biphenyl-3,3',4,4'-tetracarboxylic acid

Procedure

The 3,4-dicarbomethoxy-biphenyl-3′,4′-dicarboxylic acid obtained in Example 3-1 was reacted with concentrated hydrochloric acid to obtain 3,4,3′,4′-biphenyltetracarboxylic acid (s-BPTA). Then, the obtained 3,4,3′,4′-biphenyltetracarboxylic acid was reacted in acetic anhydride under heating, to obtain a 3,4,3′,4′-biphenyltetracarboxylic acid anhydride (s-BPDA).

Sources & evidence

ORD record: ord-ffe5464e477e4ca1ab63a8f256d9cd39
Source dataset: uspto-grants-2016_07
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US09394226B2

Reaction notes

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