Sodium Sulfite → 3-((2-(Methylsulfinyl)benzo[d]thiazol-6-yl)methyl)imidazo[1,2-b]pyridazine-6-carbonitrile

HRID 1848253ノート

反応式

HRID 1848253 の反応式
[CH3:1][S:2][C:3]1[S:4][C:5]2[CH:11]=[C:10]([CH2:12][C:13]3[N:17]4[N:18]=[C:19]([C:22]#[N:23])[CH:20]=[CH:21][C:16]4=[N:15][CH:14]=3)[CH:9]=[CH:8][C:6]=2[N:7]=1.C1C=C(Cl)C=C(C(OO)=[O:32])C=1.[O-]S([O-])=O.[Na+].[Na+]>C(Cl)Cl>[CH3:1][S:2]([C:3]1[S:4][C:5]2[CH:11]=[C:10]([CH2:12][C:13]3[N:17]4[N:18]=[C:19]([C:22]#[N:23])[CH:20]=[CH:21][C:16]4=[N:15][CH:14]=3)[CH:9]=[CH:8][C:6]=2[N:7]=1)=[O:32]

参加物

5

反応物 3

HCID 24437Sodium SulfiteHCID 70297m-Chloroperbenzoic acidHCID 866812263-((2-(Methylthio)benzo[d]thiazol-6-yl)methyl)imidazo[1,2-b]pyridazine-6-carbonitrile

生成物 1

HCID 866812283-((2-(Methylsulfinyl)benzo[d]thiazol-6-yl)methyl)imidazo[1,2-b]pyridazine-6-carbonitrile収率 96%

試薬・触媒・溶媒 1

HCID 6344Dichloromethane溶媒

反応条件

温度
0 °C

実験手順

To a solution of 3-((2-(methylthio)benzo[d]thiazol-6-yl)methyl)imidazo[1,2-b]pyridazine-6-carbonitrile (0.7 g, 2.1 mmol) in DCM (30 mL) at 0° C. was slowly added m-CPBA (0.4 g, 2.1 mmol). The reaction mixture was stirred at 0° C. for 2 h, then aq Na2SO3 (25 mL) was added and the mixture was stirred for 0.5 h. The organic layer was separated and dried over Na2SO4, filtered and concentrated under reduced pressure. The residue was purified by silica gel chromatography eluting with 50:1 to 20:1 DCM/MeOH to afford 3-((2-(methylsulfinyl)benzo[d]thiazol-6-yl)methyl)imidazo[1,2-b]pyridazine-6-carbonitrile as a yellow solid (0.7 g, 96%). 1H NMR (300 MHz, CDCl3) δ 8.11 (d, J=9.3 Hz, 1H), 8.02 (d, J=8.4 Hz, 1H), 7.92 (s, 1H), 7.82 (s, 1H), 7.51 (d, J=8.4 Hz, 1H), 7.31 (d, J=9.3 Hz, 1H), 4.54 (s, 2H), 3.07 (s, 3H). LCMS (ESI) m/z 354 (M+H)+.

後処理

  1. customat 0° C.
  2. stirringthe mixture was stirred for 0.5 h
  3. customThe organic layer was separated
  4. dry with materialdried over Na2SO4
  5. filtrationfiltered
  6. concentrationconcentrated under reduced pressure
  7. customThe residue was purified by silica gel chromatography
  8. washeluting with 50:1 to 20:1 DCM/MeOH

出典と根拠

ORDレコード
ord-2b7e44685ecd48f98e569e72415965fe
出典データセット
uspto-grants-2015_02
特許番号
US08952058B2

反応ノート

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