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Hydrochloric Acid → (3R,6S)-3-(N-(allyloxy)-2-nitrophenylsulfonamido)-6-(methoxymethyl)-N-methyl-1,2,3,6-tetrahydropyridine-4-carboxamide

HRID 627265
ノート
印刷プレビュー

反応式

HRID 627265 の反応式
[CH2:1]([O:4][N:5]([C@H:18]1[CH2:23][N:22](C(OC(C)(C)C)=O)[C@H:21]([CH2:31][O:32][CH3:33])[CH:20]=[C:19]1[C:34](=[O:37])[NH:35][CH3:36])[S:6]([C:9]1[CH:14]=[CH:13][CH:12]=[CH:11][C:10]=1[N+:15]([O-:17])=[O:16])(=[O:8])=[O:7])[CH:2]=[CH2:3].Cl>O1CCOCC1>[CH2:1]([O:4][N:5]([C@@H:18]1[C:19]([C:34]([NH:35][CH3:36])=[O:37])=[CH:20][C@@H:21]([CH2:31][O:32][CH3:33])[NH:22][CH2:23]1)[S:6]([C:9]1[CH:14]=[CH:13][CH:12]=[CH:11][C:10]=1[N+:15]([O-:17])=[O:16])(=[O:8])=[O:7])[CH:2]=[CH2:3]
参加物実験手順後処理出典と根拠反応ノート

参加物

4

反応物 2

HCID 313Hydrochloric AcidHCID 89852105(2S,5R)-tert-butyl 5-(N-(allyloxy)-2-nitrophenylsulfonamido)-2-(methoxymethyl)-4-(methylcarbamoyl)-5,6-dihydropyridine-1(2H)-carboxylate2 回

生成物 1

HCID 89852470(3R,6S)-3-(N-(allyloxy)-2-nitrophenylsulfonamido)-6-(methoxymethyl)-N-methyl-1,2,3,6-tetrahydropyridine-4-carboxamide収率 69%

試薬・触媒・溶媒 1

HCID 312751,4-Dioxane溶媒2 回

実験手順

To a solution of (2S,5R)-tert-butyl 5-(N-(allyloxy)-2-nitrophenylsulfonamido)-2-(methoxymethyl)-4-(methylcarbamoyl)-5,6-dihydropyridine-1(2H)-carboxylate (Intermediate 256, 1 g, 1.85 mmol) in dioxane (10 ml) at room temperature was added 4M HCl in Dioxane (2 ml, 57.16 mmol). The reaction mixture was stirred at that temperature for 4-5 hours. The reaction mixture was concentrated and the crude was taken up in 2M NaOH and extracted with dichloromethane. The combined organic extracts were washed with brine, dried over sodium sulfate, filtered and concentrated. Silica gel chromatography (increasing percentage of methanol in dichloromethane) afforded the title compound as a thick oil (0.56 g, 69%).

後処理

  1. concentrationThe reaction mixture was concentrated
  2. extractionextracted with dichloromethane
  3. washThe combined organic extracts were washed with brine
  4. dry with materialdried over sodium sulfate
  5. filtrationfiltered
  6. concentrationconcentrated
  7. temperatureSilica gel chromatography (increasing percentage of methanol in dichloromethane)

出典と根拠

ORDレコード
ord-1c621a2215d944bb848a267f6a40a771
出典データセット
uspto-grants-2016_04
DOI
10.6084/m9.figshare.5104873.v1
特許番号
US09309245B2

反応ノート

読み込み中…

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