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

HRID 127745

Reaktionsgleichung

Reaktionsgleichung von HRID 127745
[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-8c305fb4020947bca1465fd82b775bfa
Quelldatensatz
uspto-grants-1981_03
Patentnummer
US04256878

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