3-(Methylsulfonyl)phenylboronic acid → 8-(3-(Methylsulfonyl)phenyl)-[1,2,4]triazolo[1,5-a]pyridin-2-amine
Reaction equation
Br[C:2]1[C:3]2[N:4]([N:8]=[C:9]([NH2:11])[N:10]=2)[CH:5]=[CH:6][CH:7]=1.[CH3:12][S:13]([C:16]1[CH:17]=[C:18](B(O)O)[CH:19]=[CH:20][CH:21]=1)(=[O:15])=[O:14]>>[CH3:12][S:13]([C:16]1[CH:21]=[C:20]([C:2]2[C:3]3[N:4]([N:8]=[C:9]([NH2:11])[N:10]=3)[CH:5]=[CH:6][CH:7]=2)[CH:19]=[CH:18][CH:17]=1)(=[O:15])=[O:14]Participants
3
Procedure
8-(3-Methanesulfonyl-phenyl)-[1,2,4]triazolo[1,5-a]pyridin-2-ylamine was prepared from 8-bromo-[1,2,4]triazolo[1,5-a]pyridin-2-ylamine (1.0 g, 4.7 mmol) and 3-(methanesulfonyl)phenyl boronic acid (1.0 g, 5.0 mmol) in a manner analogous to Step 2c. The reaction product was isolated as an off-white solid (0.99 g, 73%). MP=173-183° C. 1H NMR (400 MHz, (D3C)2SO, δ, ppm): 8.64-8.60 (m, 1H), 8.59 (t, J=1.6 Hz, 1H), 8.50-8.46 (m, 1H), 7.98-7.94 (m, 1H), 7.86-7.83 (m, 1H), 7.78 (dd, J=7.8, 7.8 Hz, 1H), 7.02 (dd, J=7.1, 7.1 Hz, 1H), 6.18 (s, 1H), 3.29 (S, 3H). MS=289 (MH)+.
Sources & evidence
- ORD record
- ord-7625b97224b248928c2c5172c90209fe
- Source dataset
- uspto-grants-2014_01
- Patent number
- US08633173B2
Reaction notes
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