Thionyl Chloride → HCID 178516072, compound
Reaction equation
O[CH2:2][C:3]1[N:4]=[C:5]([C:8]2[CH:13]=[CH:12][C:11]([N:14]3[CH:19]=[CH:18][CH:17]=[CH:16][C:15]3=[O:20])=[CH:10][C:9]=2[F:21])[NH:6][CH:7]=1.S(Cl)([Cl:24])=O>>[Cl:24][CH2:2][C:3]1[N:4]=[C:5]([C:8]2[CH:13]=[CH:12][C:11]([N:14]3[CH:19]=[CH:18][CH:17]=[CH:16][C:15]3=[O:20])=[CH:10][C:9]=2[F:21])[NH:6][CH:7]=1Participants
Procedure
Alternatively as shown in Scheme 4, 1-iodo-2-fluoro-4-(2-oxopyridin-1(2H)-yl)benzene 3-2 prepared as above, is treated with 4-hydroxymethylimidazole II-1 in the presence of 8-hydroxyquinoline, and K2CO3 in DMSO. The resulting mixture is degassed before being charged with CuI to give 4-hydroxymethyl-(2-fluoro-4-(2-oxopyridin-1(2H)-yl)phenyl)imidazole 4-1. The compound 4-1 is treated with thionyl chloride to give 4-chloromethyl-(2-fluoro-4-(2-oxopyridin-1(2H)-yl)phenyl)imidazole which is then treated with NaN3 to result in 4-azidomethyl-(2-fluoro-4-(2-oxopyridin-1(2H)-yl)phenyl)imidazole 4-2. The azide 4-2 is reduced with Ph3P to give 4-aminomethyl-(2-fluoro-4-(2-oxopyridin-1(2H)-yl)phenyl)imidazole 4-3. The compound 4-3 is then treated with 5-chlorothiophene-2-carboxylic acid 1-5 to give the title compound 21.
Sources & evidence
- ORD record
- ord-9bcb64ea0e0b4938a0e40be02862038b
- Source dataset
- uspto-grants-2010_08
- Patent number
- US07767697B2
Reaction notes
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