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Ethyl Acetate → tert-butyl 4-methyl-3-(6-tosyl-6H-imidazo[1,5-a]pyrrolo[2,3-e]pyrazin-1-yl)piperidine-1-carboxylate

HRID 2204512
ノート
印刷プレビュー

反応式

HRID 2204512 の反応式
[CH3:1][CH:2]1[CH2:7][CH2:6][N:5]([C:8]([O:10][C:11]([CH3:14])([CH3:13])[CH3:12])=[O:9])[CH2:4][CH:3]1[C:15](=O)[NH:16][CH2:17][C:18]1[N:19]=[C:20]2[CH:26]=[CH:25][N:24]([S:27]([C:30]3[CH:36]=[CH:35][C:33]([CH3:34])=[CH:32][CH:31]=3)(=[O:29])=[O:28])[C:21]2=[N:22][CH:23]=1.COC1C=CC(P2(SP(C3C=CC(OC)=CC=3)(=S)S2)=S)=CC=1.CCOC(C)=O>O1CCOCC1.C(O[Hg]OC(=O)C)(=O)C>[CH3:1][CH:2]1[CH2:7][CH2:6][N:5]([C:8]([O:10][C:11]([CH3:14])([CH3:12])[CH3:13])=[O:9])[CH2:4][CH:3]1[C:15]1[N:19]2[C:20]3[CH:26]=[CH:25][N:24]([S:27]([C:30]4[CH:31]=[CH:32][C:33]([CH3:34])=[CH:35][CH:36]=4)(=[O:28])=[O:29])[C:21]=3[N:22]=[CH:23][C:18]2=[CH:17][N:16]=1
参加物反応条件実験手順後処理出典と根拠反応ノート

参加物

6

反応物 3

HCID 8857Ethyl AcetateHCID 87949Lawesson's reagentHCID 58009799tert-butyl 4-methyl-3-((5-tosyl-5H-pyrrolo[2,3-b]pyrazin-2-yl)methylcarbamoyl)piperidine-1-carboxylate

生成物 1

HCID 58009941tert-butyl 4-methyl-3-(6-tosyl-6H-imidazo[1,5-a]pyrrolo[2,3-e]pyrazin-1-yl)piperidine-1-carboxylate収率 44.9%

試薬・触媒・溶媒 2

HCID 16683746
Diacetyloxymercury
触媒
2 回
HCID 312751,4-Dioxane溶媒

反応条件

温度
80 °C

実験手順

To a solution of tert-butyl 4-methyl-3-((5-tosyl-5H-pyrrolo[2,3-b]pyrazin-2-yl)methylcarbamoyl)piperidine-1-carboxylate (44 g, 83 mmol, Example #13, Step H) in 1,4-dioxane (500 mL) was added Lawesson's reagent (20.2 g, 50.0 mmol). The reaction was heated at about 80° C. for about 1 h. The reaction was allowed to cool to ambient temperature followed by the addition of diacetoxymercury (26.6 g, 83.0 mmol). After about 1 h, additional diacetoxymercury (13.3 g, 42.0 mmol) was added. After about 15 min, the reaction was poured into stirred EtOAc (2 L). After about 15 min the reaction was filtered through Celite® and the filtrate was concentrated under reduced pressure. The resulting residue was triturated with EtOAc (500 mL) and filtered. The filtrate was concentrated under reduced pressure and purified by silica gel chromatography (330 g column) eluting with a gradient of 10-50% EtOAc in heptane to provide tert-butyl 4-methyl-3-(6-tosyl-6H-imidazo[1,5-a]pyrrolo[2,3-e]pyrazin-1-yl)piperidine-1-carboxylate (19 g, 44%) as a white solid: LC/MS (Table 2, Method a) Rt=2.57 min; MS m/z: 510 (M+H)+.

後処理

  1. temperatureto cool to ambient temperature
  2. waitAfter about 15 min
  3. additionthe reaction was poured
  4. filtrationAfter about 15 min the reaction was filtered through Celite®
  5. concentrationthe filtrate was concentrated under reduced pressure
  6. customThe resulting residue was triturated with EtOAc (500 mL)
  7. filtrationfiltered
  8. concentrationThe filtrate was concentrated under reduced pressure
  9. custompurified by silica gel chromatography (330 g column)
  10. washeluting with a gradient of 10-50% EtOAc in heptane

出典と根拠

ORDレコード
ord-78c2bfd5806c460e8441775bacd67fbc
出典データセット
uspto-grants-2016_06
DOI
10.6084/m9.figshare.5104873.v1
特許番号
US09365579B2

反応ノート

読み込み中…

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