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Chloroacetic anhydride → N-(5-(5-(chloromethyl)-1,2,4-oxadiazol-3-yl)-2-methylphenyl)imidazo[1,2-a]pyridine-3-carboxamide

HRID 405790
ノート
印刷プレビュー

反応式

HRID 405790 の反応式
[OH:1][N:2]=[C:3]([C:5]1[CH:6]=[CH:7][C:8]([CH3:23])=[C:9]([NH:11][C:12]([C:14]2[N:18]3[CH:19]=[CH:20][CH:21]=[CH:22][C:17]3=[N:16][CH:15]=2)=[O:13])[CH:10]=1)[NH2:4].[Cl:24][CH2:25][C:26](OC(=O)CCl)=O>CN1C(=O)CCC1.O>[Cl:24][CH2:25][C:26]1[O:1][N:2]=[C:3]([C:5]2[CH:6]=[CH:7][C:8]([CH3:23])=[C:9]([NH:11][C:12]([C:14]3[N:18]4[CH:19]=[CH:20][CH:21]=[CH:22][C:17]4=[N:16][CH:15]=3)=[O:13])[CH:10]=2)[N:4]=1
参加物反応条件実験手順後処理出典と根拠反応ノート

参加物

5

反応物 2

HCID 10946Chloroacetic anhydrideHCID 86677441N-(5-(N'-hydroxycarbamimidoyl)-2-methylphenyl)imidazo[1,2-a]pyridine-3-carboxamide

生成物 1

HCID 86677445N-(5-(5-(chloromethyl)-1,2,4-oxadiazol-3-yl)-2-methylphenyl)imidazo[1,2-a]pyridine-3-carboxamide

試薬・触媒・溶媒 2

HCID 962Water溶媒HCID 13387N-methyl-2-pyrrolidone溶媒

反応条件

温度
110 °C

実験手順

A mixture of N-(5-(N′-hydroxycarbamimidoyl)-2-methylphenyl)imidazo[1,2-a]pyridine-3-carboxamide (9) (500 mg, 1.62 mmol) and 2-chloroacetic anhydride (553 mg, 3.23 mmol) in anhydrous NMP (10 mL) was heated in the microwave at 110° C. for 12 minutes. The crude was diluted with water and extracted with ethyl acetate. The organic was washed with a water/brine mixture and dried over anhydrous sodium sulfate. The solvent was concentrated and the crude product was purified by silica chromatography to yield N-(5-(5-(chloromethyl)-1,2,4-oxadiazol-3-yl)-2-methylphenyl)imidazo[1,2-a]pyridine-3-carboxamide (38). MS m/z 378.9 (M+1)+.

後処理

  1. extractionextracted with ethyl acetate
  2. washThe organic was washed with a water/brine mixture
  3. dry with materialdried over anhydrous sodium sulfate
  4. concentrationThe solvent was concentrated
  5. customthe crude product was purified by silica chromatography

出典と根拠

ORDレコード
ord-ee9e4dcc2cdd4e24bcfc37014fb658c7
出典データセット
uspto-grants-2014_06
DOI
10.6084/m9.figshare.5104873.v1
特許番号
US08754071B2

反応ノート

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