1-[2-(4-Bromophenoxy)ethyl]piperidine → (+)-1-[3-Hydroxy-6-[4-(2-piperidin-1-yl-ethoxy)phenyl]-6h-benzo[c]chromen-8-yl]-ethanone

HRID 1359148ノート

反応式

HRID 1359148 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.C([Li])CCC.C[O:23][C:24]1[CH:33]=[C:32]2[C:27]([C:28]3[CH:38]=[CH:37][C:36]([C:39]4([CH3:44])OCC[O:40]4)=[CH:35][C:29]=3[C:30](=O)[O:31]2)=[CH:26][CH:25]=1.[Li]>C1COCC1.O>[OH:23][C:24]1[CH:33]=[C:32]2[C:27]([C:28]3[CH:38]=[CH:37][C:36]([C:39](=[O:40])[CH3:44])=[CH:35][C:29]=3[CH:30]([C:2]3[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]=3)[O:31]2)=[CH:26][CH:25]=1

参加物

7

反応物 4

HCID 8671951-[2-(4-Bromophenoxy)ethyl]piperidine2 回HCID 3028194LithiumHCID 113244043-Methoxy-8-(2-methyl-[1,3]-dioxolan-2-yl)-benzo[c]chromen-6-oneHCID 178418339Butyllithium

生成物 1

HCID 11374158(+)-1-[3-Hydroxy-6-[4-(2-piperidin-1-yl-ethoxy)phenyl]-6h-benzo[c]chromen-8-yl]-ethanone収率 48%

試薬・触媒・溶媒 2

HCID 962Water溶媒HCID 8028Tetrahydrofuran溶媒2 回

反応条件

温度
-78 °C

実験手順

1-[2-(4-bromo-phenoxy)-ethyl]-piperidine (0.76 g, 2.7 mmol) from Step F was dissolved in THF (15 ml) under Ar and cooled to −78° C. n-Butyl lithium (10.0 M, 0.26 ml, 2.6 mmol) was added and the mixture was stirred at −78° C. for 1 hour. The compound from Step E (1.11 g, 3.56 mmol) was dissolved in THF (35 ml) under Ar and cooled to −78° C. to which the freshly prepared lithium salt of 1-(2-(4-bromo-phenoxy)-ethyl)-piperidine was transferred via a cannula. The reaction was stirred for 2 h. Water (150 ml) was added and the reaction extracted three times with ethyl acetate (150 ml). After removing the solvent the crude product was chromatographed on silica gel with 7% CH3OH/CH2Cl2 to yield 0.56 g (48%) of the title compound. 1H-NMR (400 MHz, CDCl3) δH 1.44 (2H, m, NCH2CH2CH2), 1.59 (4H, m, NCH2CH2CH2) 1.61 (3H, s, CH3), 2.25 (4H, m, NCH2CH2CH2), 2.83 (2H, m, NCH2CH2O), 3.78 (2H, m, OCH2), 3.85 (3H, s, OCH3), 4.01 (2H, m, OCH2), 4.18 (2H, m, NCH2CH2O), 6.69 (1H, s, ArH), 6.73 (1H, d, ArH), 6.96 (2H, d, ArH), 7.17 (1H, s, ArH), 7.56 (1H, m, ArH), 7.60 (2H, d, ArH), 7.76 (2H, m, ArH).

後処理

  1. additionwas added
  2. stirringThe reaction was stirred for 2 h
  3. extractionthe reaction extracted three times with ethyl acetate (150 ml)
  4. customAfter removing the solvent the crude product
  5. customwas chromatographed on silica gel with 7% CH3OH/CH2Cl2

出典と根拠

ORDレコード
ord-12f7047f8ecf414fa7f70b8e77c55f5a
出典データセット
uspto-grants-2003_07
特許番号
US06599921B2

反応ノート

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