Sodium Iodide → 7-[3-[[(2,3-Dihydro-7-methoxy-1,4-benzodioxin-2-yl)methyl]amino]propoxy]-2H-1-benzopyran-2-one

HRID 374215

反応式

HRID 374215 の反応式
[CH3:1][O:2][C:3]1[CH:4]=[CH:5][C:6]2[O:11][CH2:10][CH:9]([CH2:12][NH2:13])[O:8][C:7]=2[CH:14]=1.Cl[CH2:16][CH2:17][CH2:18][O:19][C:20]1[CH:29]=[C:28]2[C:23]([CH:24]=[CH:25][C:26](=[O:30])[O:27]2)=[CH:22][CH:21]=1.C(N(C(C)C)CC)(C)C.[I-].[Na+]>CN(C=O)C>[CH3:1][O:2][C:3]1[CH:4]=[CH:5][C:6]2[O:11][CH2:10][CH:9]([CH2:12][NH:13][CH2:16][CH2:17][CH2:18][O:19][C:20]3[CH:21]=[CH:22][C:23]4[CH:24]=[CH:25][C:26](=[O:30])[O:27][C:28]=4[CH:29]=3)[O:8][C:7]=2[CH:14]=1

参加物

6

反応物 4

HCID 5238Sodium IodideHCID 81531DiisopropylethylamineHCID 19006662H-1-Benzopyran-2-one, 7-(3-chloropropoxy)-HCID 18923874(7-Methoxy-2,3-dihydro-1,4-benzodioxin-2-YL)methanamine

生成物 1

HCID 197786687-[3-[[(2,3-Dihydro-7-methoxy-1,4-benzodioxin-2-yl)methyl]amino]propoxy]-2H-1-benzopyran-2-one収率 40.3%

試薬・触媒・溶媒 1

HCID 6228Dimethylformamide溶媒

反応条件

温度
100 °C

実験手順

2,3-Dihydro-7-methoxy-1,4-benzodioxin-2-methanamine (3.8 g, 20 mmole), 7-(3-chloropropoxy)coumarin (4.8 g, 20 mmole), diisopropylethylamine (2.6 g, 20 mmole) and sodium iodide (5.0 g, 33 mmole) were combined in 200 ml of DMF and heated at 100° C. for 24 hours under a nitrogen atmosphere. The solvent was then removed and replaced with 500 ml of dichloromethane. The mixture was washed with 300 ml portions of saturated aqueous sodium bicarbonate, with saturated aqueous sodium chloride, dried over sodium sulfate, filtered, and concentrated in vacuum. The residue was column chromatographed on 100 g of silica gel using first dichloromethane, then chloroform, and finally 2% methanol in chloroform as eluant. The product-containing fractions were combined and concentrated in vacuum and the residue crystallized from 100 ml of isopropanol with the addition of 5.0 ml of 4N isopropanolic HCl to give 3.2 g of title compound as a white solid, monohydrochloride, m.p. 223°- 225° C.

後処理

  1. customThe solvent was then removed
  2. washThe mixture was washed with 300 ml portions of saturated aqueous sodium bicarbonate, with saturated aqueous sodium chloride
  3. dry with materialdried over sodium sulfate
  4. filtrationfiltered
  5. concentrationconcentrated in vacuum
  6. customchromatographed on 100 g of silica gel using first dichloromethane
  7. concentrationconcentrated in vacuum
  8. customthe residue crystallized from 100 ml of isopropanol with the addition of 5.0 ml of 4N isopropanolic HCl

出典と根拠

ORDレコード
ord-0fedae0cffc44585965de7dad80c3cb4
出典データセット
uspto-grants-1992_11
特許番号
US05166367

関連ノート

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