2,2',7,7'-tetrabromo-9,9'-spirobifluorene → 9,9'-Spirobi[fluorene]-2,2'-dicarboxylic acid
Reaction equation
[CH:1]1[C:13]2[C:12]3([C:25]4[CH:24]=[C:23]([C:26]([OH:28])=[O:27])[CH:22]=[CH:21][C:20]=4[C:19]4[C:14]3=[CH:15][C:16](C(O)=O)=[CH:17][CH:18]=4)[C:11]3[C:6](=[CH:7][CH:8]=[C:9](C(O)=O)[CH:10]=3)[C:5]=2[CH:4]=[CH:3][C:2]=1[C:35]([OH:37])=[O:36].BrC1C=CC2C3C(=CC(Br)=CC=3)C3(C4C=C(Br)C=CC=4C4C3=CC(Br)=CC=4)C=2C=1.C1C2C3(C4C=C(C(O)=O)C=CC=4C4C3=CC=CC=4)C3C(=CC=C(C(O)=O)C=3)C=2C=CC=1C(O)=O.BrC1C=CC2C3C(=CC(Br)=CC=3)C3(C4C=C(Br)C=CC=4C4C3=CC=CC=4)C=2C=1.C1C2C3(C4C=C(C(O)=O)C=C(C(O)=O)C=4C4C3=CC(C(O)=O)=CC=4)C3C(=CC=C(C(O)=O)C=3)C=2C(C(O)=O)=CC=1C(O)=O.BrC1C=C(Br)C2C3C(=CC(Br)=CC=3)C3(C4C=C(Br)C=C(Br)C=4C4C3=CC(Br)=CC=4)C=2C=1>>[CH:1]1[C:13]2[C:12]3([C:25]4[CH:24]=[C:23]([C:26]([OH:28])=[O:27])[CH:22]=[CH:21][C:20]=4[C:19]4[C:14]3=[CH:15][CH:16]=[CH:17][CH:18]=4)[C:11]3[C:6](=[CH:7][CH:8]=[CH:9][CH:10]=3)[C:5]=2[CH:4]=[CH:3][C:2]=1[C:35]([OH:37])=[O:36]Participants
7
Reactant 6
Product 1
Procedure
i-k) 9,9′-Spirobifluorene-2,2′,7,7′-tetracarboxylic acid can be prepared in an analogous way from 2,2′,7,7′-tetrabromo-9,9′-spirobifluorene; likewise, 9,9′-spirobifluorene-2,2′,7-tricarboxylic acid can be prepared from 2,2′,7-tribromo-9,9′-spirobifluorene and 9,9′-spirobifluorene-2,2′,4,4′,7,7′-hexacarboxylic acid can be prepared from 2,2′,4,4′,7,7′-hexabromo-9,9′-spirobifluorene by analogous methods.
Sources & evidence
- ORD record
- ord-30bf60dc7bc846dda65d74c607e0b80b
- Source dataset
- uspto-grants-2004_11
- Patent number
- US06822094B2
Reaction notes
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