1-Phenyl-1-propanol → beta-Methylstyrene

HRID 13728

Reaktionsgleichung

Reaktionsgleichung von HRID 13728
[C:1]1([CH:7](O)[CH2:8][CH3:9])[CH:6]=[CH:5][CH:4]=[CH:3][CH:2]=1.[H][H]>C1(C)C=CC=CC=1>[CH3:9][CH:8]=[CH:7][C:1]1[CH:6]=[CH:5][CH:4]=[CH:3][CH:2]=1

Komponenten

4

Edukt 2

HCID 71471-Phenyl-1-propanolHCID 178418361HCID 178418361, Verbindung2×

Produkt 1

HCID 12500beta-MethylstyreneAusbeute 90 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 1140TolueneLösungsmittel2×

Versuchsvorschrift

Compounds of Formula 1 readily catalyse the dehydration of olefins. Standard conditions were used to conduct these reactions. For example heating cyclohexanol in the presence of compounds of Formula 1 where R and R1 are hydrogen or R is hydrogen and R1 is a C1-40 alkyl, C2-40 alkenyl, C2-40 alkynyl, aryl or C1-8 alkylaryl fragment gave the desired cyclohexene. In a similar fashion treatment of 1-phenyl-1-propanol in toluene with catalysts of Formula 1 where R and R1 are hydrogen or R is hydrogen and R1 is a C1-40 alkyl, C2-40 alkenyl, C2-40 alkynyl, aryl or C1-18 alkylaryl fragment in toluene at 75° C. gave β-methyl styrene in greater than 90% yield. An advantage of this procedure is that the catalyst can simply be filtered off and reused without any apparent reduction in activity.

Aufarbeitung

  1. customat 75° C.

Quellen und Nachweise

ORD-Eintrag
ord-f45002e282a147a489f12ac45ee55914
Quelldatensatz
uspto-grants-2010_06
Patentnummer
US07728159B2

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