Trifluoroacetic acid → (3R,6S)-3-(N-(allyloxy)-2-nitrophenylsulfonamido)-6-(methoxymethyl)-N,N-dimethyl-1,2,3,6-tetrahydropyridine-4-carboxamide

HRID 627168ノート

反応式

HRID 627168 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:38])[N:35]([CH3:37])[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].FC(F)(F)C(O)=O>C(Cl)Cl>[CH2:1]([O:4][N:5]([C@@H:18]1[C:19]([C:34]([N:35]([CH3:37])[CH3:36])=[O:38])=[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

4

反応物 2

HCID 6422Trifluoroacetic acidHCID 89851960(2S,5R)-tert-butyl 5-(N-(allyloxy)-2-nitrophenylsulfonamido)-4-(dimethylcarbamoyl)-2-(methoxymethyl)-5,6-dihydropyridine-1 (2H)-carboxylate2 回

生成物 1

HCID 89851925(3R,6S)-3-(N-(allyloxy)-2-nitrophenylsulfonamido)-6-(methoxymethyl)-N,N-dimethyl-1,2,3,6-tetrahydropyridine-4-carboxamide収率 100.1%

試薬・触媒・溶媒 1

HCID 6344Dichloromethane溶媒

実験手順

To a solution of (2S,5R)-tert-butyl 5-(N-(allyloxy)-2-nitrophenylsulfonamido)-4-(dimethylcarbamoyl)-2-(methoxymethyl)-5,6-dihydropyridine-1(2H)-carboxylate (Intermediate 140, 1.642 g, 2.96 mmol) in DCM (8 mL) was added trifluoroacetic acid (4.33 mL, 56.25 mmol) and stirred at rt for 30 minutes. Upon addition, the color of the solution immediately turned pink. Then the solvents were evaporated and the crude product redissolved in DCM and washed with 0.5N NaOH, brine, filtered and concentrated to obtain the desired product (1.346 g, 100%) as a beige foam.

後処理

  1. additionUpon addition
  2. customThen the solvents were evaporated
  3. dissolutionthe crude product redissolved in DCM
  4. washwashed with 0.5N NaOH, brine
  5. filtrationfiltered
  6. concentrationconcentrated

出典と根拠

ORDレコード
ord-e066778b96a2463ca84a14b48d3deb51
出典データセット
uspto-grants-2016_04
特許番号
US09309245B2

反応ノート

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