Bromomethylcyclopropane → (5R,6S)-5-(3-chlorophenyl)-6-(4-chlorophenyl)-1-((S)-1-(cyclopropylmethoxy)butan-2-yl)piperidin-2-one

HRID 931954ノート

反応式

HRID 931954 の反応式
[Cl:1][C:2]1[CH:3]=[C:4]([C@@H:8]2[C@@H:13]([C:14]3[CH:19]=[CH:18][C:17]([Cl:20])=[CH:16][CH:15]=3)[N:12]([C@@H:21]([CH2:24][CH3:25])[CH2:22][OH:23])[C:11](=[O:26])[CH2:10][CH2:9]2)[CH:5]=[CH:6][CH:7]=1.Br[CH2:28][CH:29]1[CH2:31][CH2:30]1.CC(C)([O-])C.[Na+]>CN(C=O)C>[Cl:1][C:2]1[CH:3]=[C:4]([C@@H:8]2[C@@H:13]([C:14]3[CH:19]=[CH:18][C:17]([Cl:20])=[CH:16][CH:15]=3)[N:12]([C@@H:21]([CH2:24][CH3:25])[CH2:22][O:23][CH2:28][CH:29]3[CH2:31][CH2:30]3)[C:11](=[O:26])[CH2:10][CH2:9]2)[CH:5]=[CH:6][CH:7]=1

参加物

5

反応物 3

HCID 81503BromomethylcyclopropaneHCID 23676156Sodium t-butoxideHCID 58573362(5R,6S)-5-(3-chlorophenyl)-6-(4-chlorophenyl)-1-((S)-1-hydroxybutan-2-yl)piperidin-2-one

生成物 1

HCID 58573287(5R,6S)-5-(3-chlorophenyl)-6-(4-chlorophenyl)-1-((S)-1-(cyclopropylmethoxy)butan-2-yl)piperidin-2-one

試薬・触媒・溶媒 1

HCID 6228Dimethylformamide溶媒

反応条件

温度
0 °C

実験手順

To a solution of 1.48 g (3.77 mmol) of (5R,6S)-5-(3-chlorophenyl)-6-(4-chlorophenyl)-1-((S)-1-hydroxybutan-2-yl)piperidin-2-one (Example 68, Step A) and bromomethylcyclopropane (0.828 mL, 7.54 mmol) in DMF (20 mL) was added sodium t-butoxide (0.544 g, 5.66 mmol) at 0° C. The mixture was stirred at 0° C. for 2 h and then warmed to rt. Then the reaction was stirred at rt for 14 h. The reaction was quenched with sat. aqueous NH4Cl solution and extracted with EtOAc. The combined organic layers were washed with water and sat. aq. NaCl solution, dried over MgSO4, filtered and the filtrate was concentrated under reduced pressure. Purification by flash chromatography on silica gel (eluent: 20%-40% EtOAc/Hexanes, gradient elution) provided the title compound as a colorless oil.

後処理

  1. temperaturewarmed to rt
  2. stirringThen the reaction was stirred at rt for 14 h
  3. customThe reaction was quenched with sat. aqueous NH4Cl solution
  4. extractionextracted with EtOAc
  5. washThe combined organic layers were washed with water and sat. aq. NaCl solution
  6. dry with materialdried over MgSO4
  7. filtrationfiltered
  8. concentrationthe filtrate was concentrated under reduced pressure
  9. customPurification by flash chromatography on silica gel (eluent: 20%-40% EtOAc/Hexanes, gradient elution)

出典と根拠

ORDレコード
ord-64bd22eb9c4545b08e92f2573456b6b0
出典データセット
uspto-grants-2016_03
特許番号
US09296736B2

反応ノート

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