1997
DOI: 10.1002/ange.19971092117
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Tetraethylammoniumtrichlorid, ein vielseitiges Reagens für Chlorierungen und Oxidationen

Abstract: Experimentelles 4: TACN (88.4 mg. 0.73 mmol), K,CO, (423 mg, 3.1 mmol) und R,CH,CH,CH,I (1.41 g. 2.41 mmol) wurden in DMSO (10 mL. von CaH, destilliert) gelost und 24 h auf 90 "C erhitzt. Perfluorheptan (20 mL) wurde zur Reaktionsmischung gegeben, die braune untere Phase wurde abgetrennt und dann filtriert. Nach Entfernen des Losungsmittels blieb ein hraunes 0 1 zuriick. Umkristallisieren aus heiBem Hexan lieferte 4 als gelbliches Pulver in 60% Ausbeute. FAB-MS: mjr: 1510 [ M + Hi]; Elementaranalyse (X): her. … Show more

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Cited by 40 publications
(17 citation statements)
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“…[191] Similar to tribromides,t he use of trichlorides as an alternative to chlorine has been reported. [192] Chlorinations of several substrates,s uch as ketones, [193] alkenes, [194] and alkynes, [193] have used tetraethylammonium trichloride,asub- Table 13: Formulas of all experimentally known non-classical polyinterhalogen anions with more than three atoms. [a] Containing the atoms:…”
Section: Halogenation Reactionsmentioning
confidence: 99%
See 1 more Smart Citation
“…[191] Similar to tribromides,t he use of trichlorides as an alternative to chlorine has been reported. [192] Chlorinations of several substrates,s uch as ketones, [193] alkenes, [194] and alkynes, [193] have used tetraethylammonium trichloride,asub- Table 13: Formulas of all experimentally known non-classical polyinterhalogen anions with more than three atoms. [a] Containing the atoms:…”
Section: Halogenation Reactionsmentioning
confidence: 99%
“…Bromine Iodine Mixed chlorine -[ Br 3 Cl 4 ] À [182] [Br 5 Cl 6 ] À [182] [Br 6 Cl 6 ] À [182] stance that is stable at room temperature for months. [193] Moreover,t etrabutylammonium trichloride has been used as ac onvenient chlorination source in total synthesis [195] and for the chlorination of alkynes. [196]…”
Section: Fluorinementioning
confidence: 99%
“…Evans und Lo zeigten bei diesen Untersuchungen außerdem, dass beim Umsetzen von [NEt4]Cl mit Chlor im Verhältnis 1:2 eine zusätzliche Ramanbande auftritt, welche sie [Cl5]— zuordneten. In Analogie zu den Bromierungsreaktionen des Tribromids zeigten sie, dass sich das Tetraethylmmoniumtrichlorid als Chlorierungsmittel eignet 17. Bis auf eine Ausnahme, [Cl3···Cl2]—,16 waren höhere Polychloride wie [Cl5]— noch nicht als Einkristall isolierbar.…”
Section: Die V‐förmigen: Polychlorideunclassified
“…[8] However, after some unsuccessful experimentation with the above protocols, a novel one-step procedure was examined that had been reported to allow for the direct conversion of methyl ketones into simple, terminal alkynes. [15] This welcome result renders unnecessary steps that would otherwise be required to regenerate the silyl enol ether (Scheme 4). [9] Lewis acid promoted formylation of the corresponding lithium acetylide with DMF followed by the reduction of the intermediate propiolaldehyde with catalytic Pd/C under an atmosphere of hydrogen then furnished aliphatic aldehyde 12.…”
Section: Nikolas Huwyler and Erick M Carreira*mentioning
confidence: 99%