1-(diphenylmethyl)-1H-indole-2,3-dione → 1-(diphenylmethyl)-3-hydroxy-3-(7-hydroxy-3,4-dihydro-2H-chromen-6-yl)-1,3-dihydro-2H-indol-2-one

HRID 1965250ノート

反応式

HRID 1965250 の反応式
[O:1]1[C:10]2[C:5](=[CH:6][CH:7]=[C:8]([OH:11])[CH:9]=2)[CH2:4][CH2:3][CH2:2]1.C([Mg]Cl)(C)C.[C:17]1([CH:23]([C:35]2[CH:40]=[CH:39][CH:38]=[CH:37][CH:36]=2)[N:24]2[C:32]3[C:27](=[CH:28][CH:29]=[CH:30][CH:31]=3)[C:26](=[O:33])[C:25]2=[O:34])[CH:22]=[CH:21][CH:20]=[CH:19][CH:18]=1>O1CCCC1.ClCCl.[Cl-].[NH4+]>[C:35]1([CH:23]([C:17]2[CH:22]=[CH:21][CH:20]=[CH:19][CH:18]=2)[N:24]2[C:32]3[C:27](=[CH:28][CH:29]=[CH:30][CH:31]=3)[C:26]([OH:33])([C:7]3[CH:6]=[C:5]4[C:10](=[CH:9][C:8]=3[OH:11])[O:1][CH2:2][CH2:3][CH2:4]4)[C:25]2=[O:34])[CH:36]=[CH:37][CH:38]=[CH:39][CH:40]=1

参加物

7

反応物 3

HCID 19692771-(diphenylmethyl)-1H-indole-2,3-dioneHCID 12236542Chroman-7-olHCID 178418918HCID 178418918、化合物

生成物 1

HCID 685970791-(diphenylmethyl)-3-hydroxy-3-(7-hydroxy-3,4-dihydro-2H-chromen-6-yl)-1,3-dihydro-2H-indol-2-one収率 81%

試薬・触媒・溶媒 3

HCID 6344Dichloromethane溶媒HCID 8028Tetrahydrofuran溶媒HCID 25517Ammonium Chloride溶媒

反応条件

温度
0 °C

実験手順

To a cooled (0° C.) solution of chroman-7-ol (Cube, R. V., et al., Bioorg. Med. Chem. Lett. (2005), 15(9):2389-93) (0.55 g, 3.66 mmol) in tetrahydrofuran (11 mL) under nitrogen was added isopropylmagnesium chloride (2.4 mL, 2 M in tetrahydrofuran, 4.8 mmol). The resulting solution was stirred at 0° C. for 30 min. A suspension of 1-(diphenylmethyl)indoline-2,3-dione (1.16 g, 3.70 mmol) in dichloromethane (4 mL) was added. The reaction was stirred at 0° C. for 10 min, then warmed to ambient temperature and stirred for 15.5 h. The reaction was diluted with saturated ammonium chloride solution (10 mL) and the organic solvents were removed under reduced pressure. The residual mixture was diluted with water (50 mL) and extracted with ethyl acetate (3×25 mL). The combined organic solution was washed with brine (50 mL), dried over sodium sulfate, filtered and concentrated under reduced pressure. The residue was purified by flash column chromatography with hexanes/ethyl acetate (7:3) to afford 1-(diphenylmethyl)-3-hydroxy-3-(7-hydroxy-3,4-dihydro-2H-chromen-6-yl)-1,3-dihydro-2H-indol-2-one (1.37 g, 81%) as a light yellow solid: mp 204-206° C. (diethyl ether/hexanes); 1H NMR (300 MHz, CDCl3) δ8.90 (s, 1H), 7.49 (dd, J=5.6, 3.2 Hz, 1H), 7.38-7.23 (m, 10H), 7.12-7.06 (m, 2H), 6.95 (s, 1H), 6.52-6.47 (m, 3H), 4.23 (s, 1H), 4.121 (dd, J=5.7, 4.5 Hz, 2H), 2.53 (t, J=6.3 Hz, 2H), 1.95-1.87 (m, 2H); MS (ES+) m/z 486.1 (M+23).

後処理

  1. additionwas added
  2. stirringThe reaction was stirred at 0° C. for 10 min
  3. temperaturewarmed to ambient temperature
  4. stirringstirred for 15.5 h
  5. customthe organic solvents were removed under reduced pressure
  6. additionThe residual mixture was diluted with water (50 mL)
  7. extractionextracted with ethyl acetate (3×25 mL)
  8. washThe combined organic solution was washed with brine (50 mL)
  9. dry with materialdried over sodium sulfate
  10. filtrationfiltered
  11. concentrationconcentrated under reduced pressure
  12. customThe residue was purified by flash column chromatography with hexanes/ethyl acetate (7:3)

出典と根拠

ORDレコード
ord-16a6a9ebd92c45c6bfb73926f3f48454
出典データセット
uspto-grants-2013_04
特許番号
US08415370B2

反応ノート

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