2-tert-Butyl-1,1,3,3-tetramethylguanidine → 3-iodo-4-nitro-1-((5-(trifluoromethyl)pyridin-2-yl)methyl)-1H-indazole
反応式
[I:1][C:2]1[C:10]2[C:5](=[CH:6][CH:7]=[CH:8][C:9]=2[N+:11]([O-:13])=[O:12])[NH:4][N:3]=1.C(N=C(N(C)C)N(C)C)(C)(C)C.Cl.Cl[CH2:28][C:29]1[CH:34]=[CH:33][C:32]([C:35]([F:38])([F:37])[F:36])=[CH:31][N:30]=1>CC#N>[I:1][C:2]1[C:10]2[C:5](=[CH:6][CH:7]=[CH:8][C:9]=2[N+:11]([O-:13])=[O:12])[N:4]([CH2:28][C:29]2[CH:34]=[CH:33][C:32]([C:35]([F:37])([F:36])[F:38])=[CH:31][N:30]=2)[N:3]=1参加物
実験手順
To a round bottom flask was added 3-iodo-4-nitro-1H-indazole (0.580 g, 2.01 mmol) and CH3CN (10 mL). 2-tert-Butyl-1,1,3,3-tetramethylguanidine (0.890 mL, 4.41 mmol) was added and the mixture was stirred for 5 minutes. 2-(Chloromethyl)-5-(trifluoromethyl)pyridine hydrochloride (0.512 g, 2.21 mmol) was added as a CH3CN solution (4 mL) and the mixture was stirred at ambient temperature overnight. The mixture was concentrated and diluted with saturated aqueous NH4Cl (20 mL) and EtOAc (60 mL). The layers were mixed and separated and the organic phase was washed with brine, dried over Na2SO4, filtered and concentrated. The crude product was purified by column chromatography (50% EtOAc/hexane) to provide 0.490 g (54%) of the product as an orange solid.
後処理
- stirringthe mixture was stirred at ambient temperature overnight
- concentrationThe mixture was concentrated
- additiondiluted with saturated aqueous NH4Cl (20 mL) and EtOAc (60 mL)
- additionThe layers were mixed
- customseparated
- washthe organic phase was washed with brine
- dry with materialdried over Na2SO4
- filtrationfiltered
- concentrationconcentrated
- customThe crude product was purified by column chromatography (50% EtOAc/hexane)
出典と根拠
- ORDレコード
- ord-04b77aa03b2047219e241bcf66824f10
- 出典データセット
- uspto-grants-2015_11
- 特許番号
- US09174981B2
反応ノート
読み込み中…