8-Bromo-2-(5-tert-butyl-[1,2,3]triazol-1-yl)-4,5-dihydro-6-oxa-3-thia-1-aza-benzo[e]azulene → 2-(5-tert-Butyl-[1,2,3]triazol-1-yl)-4,5-dihydro-6-oxa-3-thia-1-aza-benzo[e]azulene
Reaction equation
Br[C:2]1[CH:24]=[CH:23][C:5]2[C:6]3[N:7]=[C:8]([N:14]4[C:18]([C:19]([CH3:22])([CH3:21])[CH3:20])=[CH:17][N:16]=[N:15]4)[S:9][C:10]=3[CH2:11][CH2:12][O:13][C:4]=2[CH:3]=1>CO.[Pd]>[C:19]([C:18]1[N:14]([C:8]2[S:9][C:10]3[CH2:11][CH2:12][O:13][C:4]4[CH:3]=[CH:2][CH:24]=[CH:23][C:5]=4[C:6]=3[N:7]=2)[N:15]=[N:16][CH:17]=1)([CH3:22])([CH3:20])[CH3:21]Participants
4
Reactant 1
Product 1
Reagents, catalysts & solvents 2
Procedure
A suspension of 8-bromo-2-(5-tert-butyl-[1,2,3]triazol-1-yl)-4,5-dihydro-6-oxa-3-thia-1-aza-benzo[e]azulene (101 mg, 0.25 mmol) and 10% Pd/C (250 mg) in MeOH (5 mL) was stirred at RT under a hydrogen atmosphere for 16 h. The reaction mixture was flushed with nitrogen, filtered through Celite, washed with ethyl acetate and concentrated in vacuo. The resulting residue was purified by flash chromatography (SiO2, 20% ethyl acetate in cyclohexane) to give 434 as a white solid (54 mg, 66%). LCMS (Method C): RT=13.19 min, [M+H]+=327. 1H NMR (CDCl3): 8.30 (1H, dd, J=7.9, 1.8 Hz), 7.55 (1H, s), 7.29 (1H, m), 7.17-7.12 (1H, m), 7.08 (1H, dd, J=8.0, 1.4 Hz), 4.43 (2H, t, J=5.1 Hz), 3.39 (2H, t, J=5.1 Hz), 1.55 (9H, s).
Workup
- customThe reaction mixture was flushed with nitrogen
- filtrationfiltered through Celite
- washwashed with ethyl acetate
- concentrationconcentrated in vacuo
- customThe resulting residue was purified by flash chromatography (SiO2, 20% ethyl acetate in cyclohexane)
Sources & evidence
- ORD record
- ord-23ab539876f0420997f41dcf84b4e7b9
- Source dataset
- uspto-grants-2016_04
- Patent number
- US09309265B2
Reaction notes
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