1-[2-(4-Bromophenoxy)ethyl]piperidine → 5-(tert-butyl-dimethyl-silyloxy)-2-(7-(tert-butyl-dimethyl-silyloxy)-4-{1-hydroxy-1-[4-(2-piperidin-1-yl-ethoxy)-phenyl]-ethyl}-2H-chromen-3-yl)-phenol

HRID 2055042ノート

反応式

HRID 2055042 の反応式
Br[C:2]1[CH:16]=[CH:15][C:5]([O:6][CH2:7][CH2:8][N:9]2[CH2:14][CH2:13][CH2:12][CH2:11][CH2:10]2)=[CH:4][CH:3]=1.[CH2:17]([Li])CCC.[C:22]([Si:26]([CH3:56])([CH3:55])[O:27][C:28]1[CH:29]=[CH:30][C:31]2[C:32]3[C:45](=[O:46])[O:44][C:43]4[CH:42]=[C:41]([O:47][Si:48]([C:51]([CH3:54])([CH3:53])[CH3:52])([CH3:50])[CH3:49])[CH:40]=[CH:39][C:38]=4[C:33]=3[CH2:34][O:35][C:36]=2[CH:37]=1)([CH3:25])([CH3:24])[CH3:23].C[Mg]Br>C1COCC1>[C:51]([Si:48]([CH3:50])([CH3:49])[O:47][C:41]1[CH:40]=[CH:39][C:38]([C:33]2[CH2:34][O:35][C:36]3[C:31]([C:32]=2[C:45]([OH:46])([C:2]2[CH:16]=[CH:15][C:5]([O:6][CH2:7][CH2:8][N:9]4[CH2:14][CH2:13][CH2:12][CH2:11][CH2:10]4)=[CH:4][CH:3]=2)[CH3:17])=[CH:30][CH:29]=[C:28]([O:27][Si:26]([C:22]([CH3:23])([CH3:25])[CH3:24])([CH3:55])[CH3:56])[CH:37]=3)=[C:43]([OH:44])[CH:42]=1)([CH3:54])([CH3:52])[CH3:53]

参加物

6

反応物 4

HCID 8671951-[2-(4-Bromophenoxy)ethyl]piperidineHCID 115915722,8-bis((tert-butyldimethylsilyl)oxy)chromeno[4,3-c]chromen-5(11H)-oneHCID 178418339ButyllithiumHCID 178418573HCID 178418573、化合物

生成物 1

HCID 219591825-(tert-butyl-dimethyl-silyloxy)-2-(7-(tert-butyl-dimethyl-silyloxy)-4-{1-hydroxy-1-[4-(2-piperidin-1-yl-ethoxy)-phenyl]-ethyl}-2H-chromen-3-yl)-phenol

試薬・触媒・溶媒 1

HCID 8028Tetrahydrofuran溶媒2 回

反応条件

温度
-78 °C

実験手順

To a solution of 1-[2-(4-bromophenoxy)-ethyl]-piperidine (360 mg, 1.27 mmol) in THF (7.5 mL) at −78° C., was added n-butyl lithium (1.6 M in hexane, 773 μL, 1.24 mmol). The reaction mixture was stirred at −78° C. for 0.5 hours. To the reaction mixture was then added 2,8-bis-(tert-butyl-dimethyl-silyloxy)-11H-chromeno[4,3-c]chromen-5-one, prepared as in Example 22, (158 mg, 0.31 mmol) in THF (3 mL) and the mixture was stirred at −78° C. for 1.5 hours. To the reaction mixture was then added methyl magnesium bromide (3 M in diethyl ether, 1 mL, 3 mmol) at −78° C. and the reaction stirred at room temperature overnight. The reaction was quenched with aqueous NH4Cl and extracted with ethyl acetate. The organic layer was washed with brine and dried over MgSO4. The organic layer was concentrated to yield the crude title product as a yellow oil, which was carried into the next step without further purification.

後処理

  1. stirringthe mixture was stirred at −78° C. for 1.5 hours
  2. customThe reaction was quenched with aqueous NH4Cl
  3. extractionextracted with ethyl acetate
  4. washThe organic layer was washed with brine
  5. dry with materialdried over MgSO4
  6. concentrationThe organic layer was concentrated

出典と根拠

ORDレコード
ord-9df9cca98def4e3c80f70932f800fae7
出典データセット
uspto-grants-2008_02
特許番号
US07329654B2

反応ノート

読み込み中…