1992
DOI: 10.1007/bf00864336
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Reaction between isoprene and aniline on complex palladium catalysts

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Cited by 5 publications
(8 citation statements)
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“…The influence of the catalyst system [Pd(acac) 2 ]/PPh 3 compared to [Pd(acac) 2 ]/PPh 3 /TFA (TFA = trifluoroacetic acid) was investigated in methanol and acetonitrile. [114] It is remarkable that with [Pd(acac) 2 ]/PPh 3 in methanol only telomers were observed while in acetonitrile 1:1 adducts were also formed in yields up to 79 %. When TFA was added to the methanol, only 1:1 adducts occurred.…”
Section: Telomerization Of Isoprene With Aminesmentioning
confidence: 98%
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“…The influence of the catalyst system [Pd(acac) 2 ]/PPh 3 compared to [Pd(acac) 2 ]/PPh 3 /TFA (TFA = trifluoroacetic acid) was investigated in methanol and acetonitrile. [114] It is remarkable that with [Pd(acac) 2 ]/PPh 3 in methanol only telomers were observed while in acetonitrile 1:1 adducts were also formed in yields up to 79 %. When TFA was added to the methanol, only 1:1 adducts occurred.…”
Section: Telomerization Of Isoprene With Aminesmentioning
confidence: 98%
“…In acetonitrile telomers were also formed under these conditions. [114] In further investigations they showed the impact of the ligand, the addition of trifluoroacetic acid, and their ratio on the telomerization of isoprene with aniline. [115] Table 11 shows some selected effects concerning the ligand P(OEt) 3 .…”
Section: Telomerization Of Isoprene With Aminesmentioning
confidence: 99%
“…a cationic complex as a catalyst. The reaction of isoprene with aromatic amines in the presence of the catalysts, PdX 2 -R 3 P, results in only tail-to-head and tail-to-tail telomers [11,12]. The attempt to prepare head-to-head and head-to-tail telomers by this method were very successful in the case of mono-and dialkylamines; that is, by the use of catalytic system, PdX 2 -R 3 P-HX (HX Ϫ acid); it failed in the case of anilines.…”
Section: Methodsmentioning
confidence: 99%
“…2 ]/PPh 3 /TFA (TFA = Trifluoressigsäure) in Methanol und Acetonitril studiert. [114] Mit [Pd(acac) 2 ]/PPh 3 in Methanol wurde nur Telomerbildung beobachtet, während in Acetonitril 1:1-Addukte in Ausbeuten von bis zu 79 % gebildet werden. Die Zugabe von TFA in Methanol ergab fast ausschließlich eine Bildung von 1:1-Addukten.…”
Section: Aufsätzeunclassified
“…In Acetonitril wurden unter diesen Bedingungen auch Telomere gebildet. [114] In nachfolgenden Untersuchungen wurde gezeigt, dass der verwendete Ligand, die Zugabe von TFA sowie ihr Verhältnis einen großen Einfluss auf die Telomerisation mit Anilin haben. [115] Tabelle 11 zeigt einige ausgewählte Ergebnisse bei Verwendung des Liganden P(OEt) 3 .…”
Section: Aufsätzeunclassified