Triphenylphosphine → (3,4,5-Tribromo-2-thenyl)triphenylphosphonium chloride

HRID 904450

Reaktionsgleichung

Reaktionsgleichung von HRID 904450
[C:1]1([P:7]([C:14]2[CH:19]=[CH:18][CH:17]=[CH:16][CH:15]=2)[C:8]2[CH:13]=[CH:12][CH:11]=[CH:10][CH:9]=2)[CH:6]=[CH:5][CH:4]=[CH:3][CH:2]=1.[Br:20][C:21]1[C:25]([Br:26])=[C:24]([Br:27])[S:23][C:22]=1[CH2:28][Cl:29]>C1(C)C=CC=CC=1>[Cl-:29].[Br:20][C:21]1[C:25]([Br:26])=[C:24]([Br:27])[S:23][C:22]=1[CH2:28][P+:7]([C:1]1[CH:2]=[CH:3][CH:4]=[CH:5][CH:6]=1)([C:8]1[CH:13]=[CH:12][CH:11]=[CH:10][CH:9]=1)[C:14]1[CH:15]=[CH:16][CH:17]=[CH:18][CH:19]=1

Komponenten

4

Edukt 2

HCID 11776TriphenylphosphineHCID 151249082,3,4-Tribromo-5-(chloromethyl)thiophene

Produkt 1

HCID 20285678(3,4,5-Tribromo-2-thenyl)triphenylphosphonium chloride

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 1140TolueneLösungsmittel

Versuchsvorschrift

Triphenylphosphine (9.0 g.) and 10.4 g. of 3,4,5-tribromo-2-chloromethylthiophene were dissolved in 200 ml. of toluene. The mixture was refluxed overnight under argon, cooled to room temperature and the precipitated phosphonium salt was collected by filtration, washed several times with cold benzene and dried at 80° C. under high vacuum. The resulting (3,4,5-tribromo-2-thenyl)triphenylphosphonium chloride has a m.p. 248°-249° C.

Aufarbeitung

  1. temperatureThe mixture was refluxed overnight under argon
  2. filtrationthe precipitated phosphonium salt was collected by filtration
  3. washwashed several times with cold benzene
  4. customdried at 80° C. under high vacuum

Quellen und Nachweise

ORD-Eintrag
ord-784c2b5116a447119fb3b025dce51292
Quelldatensatz
uspto-grants-1980_10
Patentnummer
US04230872

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