Water → [(tetrahydro-2H-pyran-2-ylidene)methyl]triphenylphosphonium bromide

HRID 1438829

Reaktionsgleichung

Reaktionsgleichung von HRID 1438829
[Cl-].[C:2]1([PH+:8]([C:15]2[CH:20]=[CH:19][CH:18]=[CH:17][CH:16]=2)[C:9]2[CH:14]=[CH:13][CH:12]=[CH:11][CH:10]=2)[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.[Br-:21].[Na+].[OH2:23]>>[Br-:21].[O:23]1[CH2:6][CH2:5][CH2:4][CH2:3][C:2]1=[CH:7][P+:8]([C:2]1[CH:3]=[CH:4][CH:5]=[CH:6][CH:7]=1)([C:9]1[CH:14]=[CH:13][CH:12]=[CH:11][CH:10]=1)[C:15]1[CH:16]=[CH:17][CH:18]=[CH:19][CH:20]=1

Komponenten

4

Edukt 3

HCID 962WaterHCID 253881Sodium Bromide2×HCID 9882740Triphenylphosphine hydrochloride

Produkt 1

HCID 73676660[(tetrahydro-2H-pyran-2-ylidene)methyl]triphenylphosphonium bromide

Versuchsvorschrift

A solution consisting of 2.1 parts of triphenylphosphonium chloride in 50 parts of water is added with stirring to 2 parts of sodium bromide. At the end of about 5 minutes an additional 4 parts of sodium bromide is added the mixture is stirred until precipitation is complete. The precipitate is isolated by filtration, thus affording [(tetrahydro-2H-pyran-2-ylidene)-methyl]triphenylphosphonium bromide. This product is characterized by 60-MHz nuclear magnetic resonance peaks in CDCl3 (deuterated chloroform) at 107 cps (multiplet), 170 cps (multiplet), 228 cps (multiplet), 329 cps (doublet, J≃18 cps) in addition to the aromatic protons, by microanalytic determination of bromide.

Aufarbeitung

  1. additionis added

Quellen und Nachweise

ORD-Eintrag
ord-43180faa564f494c8f6e582517f1452e
Quelldatensatz
uspto-grants-1977_11
Patentnummer
US04056562

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