5-Chloro-1-benzofuran-2-carboxylic acid → 5-Chloro-1-benzofuran

HRID 456496

Reaktionsgleichung

Reaktionsgleichung von HRID 456496
[Cl:1][C:2]1[CH:3]=[CH:4][C:5]2[O:9][C:8](C(O)=O)=[CH:7][C:6]=2[CH:13]=1>CN1CCCC1=O.[Cu]>[Cl:1][C:2]1[CH:3]=[CH:4][C:5]2[O:9][CH:8]=[CH:7][C:6]=2[CH:13]=1

Komponenten

4

Edukt 1

HCID 9378385-Chloro-1-benzofuran-2-carboxylic acid

Produkt 1

HCID 900135-Chloro-1-benzofuranAusbeute 418,7 %

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 23978CopperKatalysatorHCID 13387N-methyl-2-pyrrolidoneLösungsmittel

Reaktionsbedingungen

Temperatur
250 °C

Versuchsvorschrift

To a solution of 5-chloro-1-benzofuran-2-carboxylic acid (0.2 g) in 1-methyl-2-pyrrolidinone (2 ml) was added copper granules (0.2 g). The reaction mixture was heated at 250° C. for 3.5 min in a microwave. The reaction vessel was cooled to room temperature and the mixture combined with four other similar mixtures and the combined mixtures partitioned between water and diethyl ether. The organic layer was washed with water and brine, dried (over magnesium sulphate) and concentrated under reduced pressure to give the title compound (0.65 g) as a yellow oil.

Aufarbeitung

  1. temperatureThe reaction vessel was cooled to room temperature
  2. customthe combined mixtures partitioned between water and diethyl ether
  3. washThe organic layer was washed with water and brine
  4. dry with materialdried (over magnesium sulphate)
  5. concentrationconcentrated under reduced pressure

Quellen und Nachweise

ORD-Eintrag
ord-07f97b830be2418c9049acd112425881
Quelldatensatz
uspto-grants-2007_03
Patentnummer
US07186717B2

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