Ethyl Bromide → 1-[4-acetyl-1-(4-ethoxy-2,3-dimethyl-phenyl)-2,5-dimethyl-1H-pyrrol-3-yl]-ethanone
Reaction equation
[C:1]([C:4]1[C:5]([C:20](=[O:22])[CH3:21])=[C:6]([CH3:19])[N:7]([C:10]2[CH:15]=[CH:14][C:13]([OH:16])=[C:12]([CH3:17])[C:11]=2[CH3:18])[C:8]=1[CH3:9])(=[O:3])[CH3:2].C([O-])([O-])=O.[K+].[K+].Br[CH2:30][CH3:31]>>[C:1]([C:4]1[C:5]([C:20](=[O:22])[CH3:21])=[C:6]([CH3:19])[N:7]([C:10]2[CH:15]=[CH:14][C:13]([O:16][CH2:30][CH3:31])=[C:12]([CH3:17])[C:11]=2[CH3:18])[C:8]=1[CH3:9])(=[O:3])[CH3:2]Participants
Procedure
Utilizing the general procedure outlined in Example 65, 1-[4-acetyl-1-(4-hydroxy-2,3-dimethyl-phenyl)-2,5-dimethyl-1H-pyrrol-3-yl]-ethanone (100 mg, 0.3 mmol) reacted with bromoethane (300 μL, excess), in the presence of K2CO3 (50 mg), to afford 1-[4-acetyl-1-(4-ethoxy-2,3-dimethyl-phenyl)-2,5-dimethyl-1H-pyrrol-3-yl]-ethanone: MS (ESI) 328 (M+H)+. Utilizing the general procedure outlined in Example 48, 1-[4-acetyl-1-(4-ethoxy-2,3-dimethyl-phenyl)-2,5-dimethyl-1H-pyrrol-3-yl]-ethanone (108 mg, 0.3) and hydrazine (50 μL) reacted to give 6-(4-Ethoxy-2,3-dimethyl-phenyl)-1,4,5,7-tetramethyl-6H-pyrrolo[3,4-d]pyridazine as off-white solid: 1H NMR (CDCl3, 500 MHz) δ 6.92 (d, 1H), 6.86 (d, 1H), 4.14 (q, 2H), 2.83 (s, 6H), 2.36 (s, 6H), 2.28 (s, 3H), 1.72 (s, 3H), 1.52 (t, 3H); MS (ESI) 324 (M+H)+.
Sources & evidence
- ORD record
- ord-a654ac7efb3540a499e9d2f2738b22ec
- Source dataset
- uspto-grants-2008_12
- Patent number
- US07465730B2
Reaction notes
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