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1-Bromo-4-chlorobutane → Methyl 2-(4-chlorobutyl)-6-(3-chloro-4-fluorobenzyl)-4-hydroxy-3,5-dioxo-2,3,5,6,7,8-hexahydro-2,6-naphthyridine-1-carboxylate

HRID 17992
Notizen
Druckvorschau

Reaktionsgleichung

Reaktionsgleichung von HRID 17992
[Cl:1][C:2]1[CH:3]=[C:4]([CH:24]=[CH:25][C:26]=1[F:27])[CH2:5][N:6]1[CH2:15][CH2:14][C:13]2[C:12]([C:16](N(C)C)=[O:17])=[N:11][C:10]([OH:21])=[C:9]([OH:22])[C:8]=2[C:7]1=[O:23].[CH3:28][O-:29].[Mg+2].C[O-].Br[CH2:34][CH2:35][CH2:36][CH2:37][Cl:38]>CO.CS(C)=O.C(OCC)(=O)C>[Cl:38][CH2:37][CH2:36][CH2:35][CH2:34][N:11]1[C:10](=[O:21])[C:9]([OH:22])=[C:8]2[C:13]([CH2:14][CH2:15][N:6]([CH2:5][C:4]3[CH:24]=[CH:25][C:26]([F:27])=[C:2]([Cl:1])[CH:3]=3)[C:7]2=[O:23])=[C:12]1[C:16]([O:29][CH3:28])=[O:17]
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Komponenten

7

Edukt 3

HCID 813641-Bromo-4-chlorobutaneHCID 164537Methanol, magnesium salt (2:1)HCID 178484497HCID 178484497, Verbindung

Produkt 1

HCID 66997340Methyl 2-(4-chlorobutyl)-6-(3-chloro-4-fluorobenzyl)-4-hydroxy-3,5-dioxo-2,3,5,6,7,8-hexahydro-2,6-naphthyridine-1-carboxylate

Reagenzien, Katalysatoren, Lösungsmittel 3

HCID 679
Dimethyl Sulfoxide
Lösungsmittel
2×
HCID 887MethanolLösungsmittel
HCID 8857Ethyl AcetateLösungsmittel

Reaktionsbedingungen

Temperatur
60 °C

Versuchsvorschrift

A mixture of 6-(3-chloro-4-fluorobenzyl)-3,4-dihydroxy-N,N-dimethyl-5-oxo-5,6,7,8-tetrahydro-2,6-naphthyridine-1-carboxamide (0.80 g, 2.19 mmol) and magnesium methoxide in methanol (10.6 mL, 6-10% methanol solution available from Aldrich) in DMSO (22 mL) was heated at 60° C. for one hour. Methanol was exhaustively removed under vacuum over 45 minutes. The resulting DMSO solution was treated with 1-bromo-4-chlorobutane (1.80 g, 10.50 mmol) and stirred at 60° C. under an atmosphere of nitrogen for one hour. The reaction mixture was diluted with ethyl acetate and washed with dilute hydrochloric acid. The organic extract was washed with 10% aqueous potassium carbonate, dried over anhydrous sodium sulfate, filtered, and concentrated under vacuum. The residue was triturated with diethyl ether. The solid precipitated was collected by filtration to provide the title compound. ES MS M+1=471

Aufarbeitung

  1. customMethanol was exhaustively removed under vacuum over 45 minutes
  2. washwashed with dilute hydrochloric acid
  3. extractionThe organic extract
  4. washwas washed with 10% aqueous potassium carbonate
  5. dry with materialdried over anhydrous sodium sulfate
  6. filtrationfiltered
  7. concentrationconcentrated under vacuum
  8. customThe residue was triturated with diethyl ether
  9. customThe solid precipitated
  10. filtrationwas collected by filtration

Quellen und Nachweise

ORD-Eintrag
ord-15540333baa24a0c9cdcc19e9e0c7790
Quelldatensatz
uspto-grants-2010_06
DOI
10.6084/m9.figshare.5104873.v1
Patentnummer
US07741315B2

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