Pyridinium chloride → HCID 66933916, compound
Reaction equation
[OH:1][CH2:2][C@H:3]1[C@H:7]([C:8]2[C:9]([O:28]C)=[CH:10][C:11]([O:26]C)=[C:12]3[C:17]=2[O:16][C:15]([C:18]2[CH:23]=[CH:22][CH:21]=[CH:20][C:19]=2[I:24])=[CH:14][C:13]3=[O:25])[CH2:6][CH2:5][N:4]1[CH3:30].Cl.N1C=CC=CC=1>>[OH:26][C:11]1[CH:10]=[C:9]([OH:28])[C:8]([C@@H:7]2[CH2:6][CH2:5][N:4]([CH3:30])[C@H:3]2[CH2:2][OH:1])=[C:17]2[C:12]=1[C:13](=[O:25])[CH:14]=[C:15]([C:18]1[CH:23]=[CH:22][CH:21]=[CH:20][C:19]=1[I:24])[O:16]2Participants
3
Procedure
Compound of example 18 (0.29 g, 0.588 mmol) subjected to demethylation using pyridine hydrochloride (3 g, 25.97 mmol) as described in example 17, afforded the title compound.
Sources & evidence
- ORD record
- ord-ead6bee37ac94d2d83fb09f869ca0614
- Source dataset
- uspto-grants-2011_02
- Patent number
- US07884127B2
Reaction notes
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