1996
DOI: 10.1002/cber.19961291228
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Derivate des Imidazols, XIX. Koordination oder Reduktion? Zur Reaktion von 1,3‐Diisopropyl‐4,5‐dimethylimidazol‐2‐yliden mit Schwefelhalogeniden und Schwefeloxidhalogeniden

Abstract: The reaction of 1,3-diisopropyl-4,5-dimethylimidazol-2-yli-give the Im . S(Me)OC12 cation (15). Surprisingly, reduction dene (4, Im) with sulfur halides and sulfur oxygen halides of the sulfur centre (2) occurs on treatment of 4 with SF4 to may be described as a coordination (1) or reduction (2) pro-form the ImF+SF, salt 18 containing the new SF3 anion. As cess in respect to the sulfur centre. With SC12 and SOClz the expected, the same type of reaction occurs with the sulfuryl hypervalent sulfur compounds Im .… Show more

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Cited by 67 publications
(65 citation statements)
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“…[201] The carbene 136 reacted with SCl 2 and SOCl 2 to give the adducts 135a and 137, respectively. [202] The crystal structure of 135a shows a T-shaped geometry. The ClϪSϪCl angle is 175.9°and the ClϪSϪCl plane intersects the NϪCϪN plane at an angle of 84.5°.…”
Section: Reverse Ylidesmentioning
confidence: 99%
“…[201] The carbene 136 reacted with SCl 2 and SOCl 2 to give the adducts 135a and 137, respectively. [202] The crystal structure of 135a shows a T-shaped geometry. The ClϪSϪCl angle is 175.9°and the ClϪSϪCl plane intersects the NϪCϪN plane at an angle of 84.5°.…”
Section: Reverse Ylidesmentioning
confidence: 99%
“…Als starke Nucleophile [4] reagieren sie bereitwillig mit polaren Verbindungen der Hauptgruppenelemente, wobei in bezug auf das Zentralelement E sowohl Koordination (2, EX n = z. B. BH 3 [5], AlH 3 [6], SiCl 4 [7], GeI 2 [8], SnCl 2 , SnCl 4 [7], SCl 2 [9], SeI 2 [10] [24].…”
Section: Spectroscopic and Structural Data Indicate [Ph 2 (Carb)p]unclassified
“…Die regioselektive Koordination des Carbens 7 an das Phosphorzentrum in Ph 2 PCl u È berrascht angesichts der glatten Reduktion von PhPCl 2 [18]; tatsa Èchlich ist auch die Addition eines Carbens an das Phosphorzentrum in PhPF 4 [17] angesichts der Reduktion von SF 4 und SO 2 F 2 [9] nicht selbstversta È ndlich. Offensichtlich begu È nstigt die bei steigender Oxidationsstufe des Moleku È lzentrums wachsende Lewis-Acidita È t nicht exklusiv den nucleophilen Angriff hieran, sondern erleichtert in a È hnlichem Maûe u È ber die Ru È ckfu È hrung der partiellen negativen Ladung an X auch den Angriff auf den Substituenten.…”
Section: Diskussion Und Ausblickunclassified
“…[11] Similar short C À F bonds have been found for 2-fluoroamidinium, 2-fluoroimidazolinium, and 2-fluoroimidazolium cations. [17] Two possible reaction pathways for the formation of 2 a have been considered (Scheme 2). Pathway A features Scheme 1.…”
mentioning
confidence: 99%