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Boron tribromide → 1-methyl-1H-indole-3-carboxylic acid (5-bromo-6-hydroxy-naphthalen-2-ylmethyl)-methyl-amide

HRID 1357276
Notizen
Druckvorschau

Reaktionsgleichung

Reaktionsgleichung von HRID 1357276
B(Br)(Br)Br.[Br:5][C:6]1[C:15]([O:16]C)=[CH:14][CH:13]=[C:12]2[C:7]=1[CH:8]=[CH:9][C:10]([CH2:18][N:19]([CH3:32])[C:20]([C:22]1[C:30]3[C:25](=[CH:26][CH:27]=[CH:28][CH:29]=3)[N:24]([CH3:31])[CH:23]=1)=[O:21])=[CH:11]2.C(=O)=O.CC(C)=O>C(Cl)Cl>[Br:5][C:6]1[C:15]([OH:16])=[CH:14][CH:13]=[C:12]2[C:7]=1[CH:8]=[CH:9][C:10]([CH2:18][N:19]([CH3:32])[C:20]([C:22]1[C:30]3[C:25](=[CH:26][CH:27]=[CH:28][CH:29]=3)[N:24]([CH3:31])[CH:23]=1)=[O:21])=[CH:11]2
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Komponenten

5

Edukt 3

HCID 25134Boron tribromideHCID 18522661Acetone cardice2×HCID 865873911-methyl-1H-indole-3-carboxylic acid (5-bromo-6-methoxy-naphthalen-2-ylmethyl)-methyl-amide

Produkt 1

HCID 865873931-methyl-1H-indole-3-carboxylic acid (5-bromo-6-hydroxy-naphthalen-2-ylmethyl)-methyl-amideAusbeute 84,4 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 6344
Dichloromethane
Lösungsmittel
3×

Versuchsvorschrift

A solution of 1.0 M boron tribromide in methylene chloride (55.0 mL, 54.9 mmol) in 50 mL of methylene chloride was added under nitrogen dropwise over 1.5 h to a solution of 1-methyl-1H-indole-3-carboxylic acid (5-bromo-6-methoxy-naphthalen-2-ylmethyl)-methyl-amide (8.0 g, 18.3 mmol), prepared in the previous step, in 300 mL of methylene chloride at dry ice-acetone temperature. The dry ice-acetone bath was replaced with an ice bath immediately after the addition. The reaction stirred at ice bath temperature for 2 h. At ice bath temperature, the reaction was quenched by the dropwise with water. The reaction was partitioned between methylene chloride and water. A solid formed in the organic layer and was collected by filtration. The solid was dried under reduced pressure to give 1-methyl-1H-indole-3-carboxylic acid (5-bromo-6-hydroxy-naphthalen-2-ylmethyl)-methyl-amide (6.5359 g, 84%) as a white solid, mp 189-190° C.

Aufarbeitung

  1. additionimmediately after the addition
  2. customAt ice bath temperature, the reaction was quenched by the dropwise with water
  3. customThe reaction was partitioned between methylene chloride and water
  4. customA solid formed in the organic layer
  5. filtrationwas collected by filtration
  6. customThe solid was dried under reduced pressure

Quellen und Nachweise

ORD-Eintrag
ord-3768de337ac049d492a3b7cce662cbef
Quelldatensatz
uspto-grants-2003_07
DOI
10.6084/m9.figshare.5104873.v1
Patentnummer
US06589970B2

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