Water → 6-(7-methylspiro[2H-benzofuran-3,1'-cyclopropane]-4-yl)oxypyridin-3-amine

HRID 1484635ノート

反応式

HRID 1484635 の反応式
[CH3:1][C:2]1[C:7]2[O:8][CH2:9][C:10]3([CH2:12][CH2:11]3)[C:6]=2[C:5]([O:13][C:14]2[CH:19]=[CH:18][C:17]([N+:20]([O-])=O)=[CH:16][N:15]=2)=[CH:4][CH:3]=1.O.[Cl-].[NH4+]>O1CCCC1>[CH3:1][C:2]1[C:7]2[O:8][CH2:9][C:10]3([CH2:12][CH2:11]3)[C:6]=2[C:5]([O:13][C:14]2[N:15]=[CH:16][C:17]([NH2:20])=[CH:18][CH:19]=2)=[CH:4][CH:3]=1

参加物

5

反応物 3

HCID 962WaterHCID 25517Ammonium ChlorideHCID 679601262-(7-methylspiro[2H-benzofuran-3,1'-cyclopropane]-4-yl)oxy-5-nitro-pyridine2 回

生成物 1

HCID 679599396-(7-methylspiro[2H-benzofuran-3,1'-cyclopropane]-4-yl)oxypyridin-3-amine収率 85.2%

試薬・触媒・溶媒 1

HCID 8028Tetrahydrofuran溶媒

実験手順

To a solution of 2-(7-methylspiro[2H-benzofuran-3,1′-cyclopropane]-4-yl)oxy-5-nitro-pyridine (Intermediate 14, 265 mg) in tetrahydrofuran (5 ml)/water (2.5 ml) iron (245 mg, 4.45 mmol) and then ammonium chloride (238 mg, 4.45 mmol) were added and the reaction mixture was stirred overnight at room temperature. The catalyst was filtered off and the residue was diluted with an aqueous saturated solution of NaHCO3 (5 ml) and extracted with ethyl acetate (3×10 ml). The organic layer was dried over sodium sulphate, filtered and evaporated and the residue was purified by flash chromatography (Biotage system) on silica gel using a 10 g SNAP column and cyclohexane/ethyl acetate 8:2 to cyclohexane/ethyl acetate 1:1 as eluents affording the title compound (203 mg) as a light yellow solid.

後処理

  1. filtrationThe catalyst was filtered off
  2. additionthe residue was diluted with an aqueous saturated solution of NaHCO3 (5 ml)
  3. extractionextracted with ethyl acetate (3×10 ml)
  4. dry with materialThe organic layer was dried over sodium sulphate
  5. filtrationfiltered
  6. customevaporated
  7. customthe residue was purified by flash chromatography (Biotage system) on silica gel using a 10 g SNAP column and cyclohexane/ethyl acetate 8:2 to cyclohexane/ethyl acetate 1:1 as eluents

出典と根拠

ORDレコード
ord-6b3d5f2a02f74ee1be95c9c990983232
出典データセット
uspto-grants-2016_08
特許番号
US09422272B2

反応ノート

読み込み中…