Water → Ethyl 6-(1-benzyloxycarbonyl-4-piperidyl)-2-methanesulfonyloxyhexanoate

HRID 649425ノート

反応式

HRID 649425 の反応式
[CH2:1]([O:8][C:9]([N:11]1[CH2:16][CH2:15][CH:14]([CH2:17][CH2:18][CH2:19][CH2:20][CH:21]([OH:27])[C:22]([O:24][CH2:25][CH3:26])=[O:23])[CH2:13][CH2:12]1)=[O:10])[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.[CH3:28][S:29](Cl)(=[O:31])=[O:30].O>N1C=CC=CC=1.C(OCC)(=O)C>[CH2:1]([O:8][C:9]([N:11]1[CH2:16][CH2:15][CH:14]([CH2:17][CH2:18][CH2:19][CH2:20][CH:21]([O:27][S:29]([CH3:28])(=[O:31])=[O:30])[C:22]([O:24][CH2:25][CH3:26])=[O:23])[CH2:13][CH2:12]1)=[O:10])[C:2]1[CH:3]=[CH:4][CH:5]=[CH:6][CH:7]=1

参加物

6

反応物 3

HCID 962WaterHCID 31297Methanesulfonyl chlorideHCID 13817553Ethyl 6-(1-benzyloxycarbonyl-4-piperidyl)-2-hydroxyhexanoate

生成物 1

HCID 13652732Ethyl 6-(1-benzyloxycarbonyl-4-piperidyl)-2-methanesulfonyloxyhexanoate

試薬・触媒・溶媒 2

HCID 1049Pyridine溶媒HCID 8857Ethyl Acetate溶媒

実験手順

In pyridine (30 ml) is dissolved R-isomer-rich ethyl 6-(1-benzyloxycarbonyl-4-piperidyl)-2-hydroxyhexanoate (7 g), and methanesulfonyl chloride (2.9 ml) is added dropwise, with stirring, under ice-cooling over the period of 5 minutes. The mixture is stirred under ice-cooling for 1.5 hours, and water (5 ml) is added dropwise to the mixture. The reaction mixture is stirred for 30 minutes, diluted with ethyl acetate (300 ml) and washed with 1N hydrochloric acid, saturated sodium hydrogencarbonate solution and water. The ethyl acetate layer is dried over anhydrous magnesium sulfate and concentrated under reduced pressure to give R-isomer-rich ethyl 6-(1-benzyloxycarbonyl-4-piperidyl)-2-methanesulfonyloxyhexanoate (8.2 g) as a pale yellow oil.

後処理

  1. additionis added dropwise
  2. temperaturecooling over the period of 5 minutes
  3. stirringThe mixture is stirred under ice-
  4. temperaturecooling for 1.5 hours
  5. stirringThe reaction mixture is stirred for 30 minutes
  6. washwashed with 1N hydrochloric acid, saturated sodium hydrogencarbonate solution and water
  7. dry with materialThe ethyl acetate layer is dried over anhydrous magnesium sulfate
  8. concentrationconcentrated under reduced pressure

出典と根拠

ORDレコード
ord-23e693dad2b5499da466ce63f19bebd1
出典データセット
uspto-grants-1988_04
特許番号
US04739066

反応ノート

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