Lithium diisopropylamide → 1,3-Dioxo-2-(2,6-dioxo-3-fluoropiperidin-3-yl)isoindoline

HRID 363433ノート

反応式

HRID 363433 の反応式
[O:1]=[C:2]1[C:10]2[C:5](=[CH:6][CH:7]=[CH:8][CH:9]=2)[C:4](=[O:11])[N:3]1[CH:12]1[CH2:17][CH2:16][C:15](=[O:18])[N:14](C(OC(C)(C)C)=O)[C:13]1=[O:26].C([N-]C(C)C)(C)C.[Li+].Cl([F:39])(=O)(=O)=O>O1CCCC1>[O:1]=[C:2]1[C:10]2[C:5](=[CH:6][CH:7]=[CH:8][CH:9]=2)[C:4](=[O:11])[N:3]1[C:12]1([F:39])[CH2:17][CH2:16][C:15](=[O:18])[NH:14][C:13]1=[O:26]

参加物

4

反応物 2

HCID 2724682Lithium diisopropylamideHCID 15408802Tert-butyl 3-(1,3-dioxoisoindolin-2-yl)-2,6-dioxopiperidine-1-carboxylate

生成物 1

HCID 98820501,3-Dioxo-2-(2,6-dioxo-3-fluoropiperidin-3-yl)isoindoline

試薬・触媒・溶媒 1

HCID 8028Tetrahydrofuran溶媒

実験手順

To a stirred solution of 1,3-dioxo-2-(1-tert.-butoxycarbonyl-2,6-dioxopiperidin-3-yl)isoindoline (1.0 g. 2.8 mmol) in tetrahydrofuran (10 mL) is added lithium diisopropylamide (1.5 mL, 3.0 mmol, 2M) at . After 30 minutes, perchloryl fluoride (5 mmol) is bubbled into the mixture. The mixture is allowed to reach room temperature and the solvent then removed in vacuo. The residue is stirred with ethyl acetate (10 mL) and IN hydrochloric acid (10 mL) for one hour. The organic layer is separated and the solvent removed in vacuo to yield 1,3-dioxo-2-(2,6-dioxo-3-fluoropiperidin-3-yl)isoindoline which can be further purified through chromatography.

後処理

  1. customto reach room temperature
  2. customthe solvent then removed in vacuo
  3. customThe organic layer is separated
  4. customthe solvent removed in vacuo

出典と根拠

ORDレコード
ord-dfc4a7688873481a8319513d23f02e13
出典データセット
uspto-grants-1999_02
特許番号
US05874448

反応ノート

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