2417-95-0Relevant articles and documents
Syntheses and Crystal Structures of Phenyl-Lithium Derivatives
Bodach, Alexander,Hebestreit, René,Bolte, Michael,Fink, Lothar
, p. 9079 - 9085 (2018)
Although organolithium compounds have been studied and applied for ～100 years, only few crystal structures of pure, unsolvated organolithium compounds have been reported so far. Therefore, several phenyl-lithium derivatives were synthesized by lithium-hal
Structural investigation of aryllithium clusters in solution I. A 13C and 7Li NMR study of phenyllithium and some methyl-substituted phenyllithium derivatives
Wehman, Erik,Jastrzebski, Johann T. B. H.,Ernsting, Jan-Meine,Grove, David M.,Koten, Gerard van
, p. 133 - 144 (1988)
13C and 7 Li NMR spectra of phenyllithium and several methyl substituted phenyllithium derivatives have been recorded in the presence of known amounts of coordinating solvents such as monodentate diethyl ether and THF and the potentially bidentate TMEDA (tetramethylethylenediamine).The relative amounts of the tetrameric and dimeric aggregates identified in these spectra depend on the donor strength, on the amount and dencity of added donor, and the presence or absence of ortho substitutents in the phenyl group.Discrete solvated tetrameric aggregates were formed upon addition of exactly one equivalent of the monodentate donor solvent to an aryllithium compound having no ortho substituents; the addition of either two equivalents or excess of monodentate donor solvent or one equivalent of bidentate donor ligand afforded dimeric species.When one or two methyl substituents were present ortho to the lithium-carbon bond, either a mixture of dimeric and tetrameric species was formed (one methyl group) or the dimeric species was exclusively formed (two methyl groups).
Regioselective Iodine/Zinc Exchange for the Selective Functionalization of Polyiodinated Arenes and Heterocycles in Toluene
Sanchez, Florian,Desaintjean, Alexandre,Danton, Fanny,Knochel, Paul
supporting information, p. 4662 - 4671 (2021/09/06)
Regioselective I/Zn-exchange reactions were performed on polyiodinated arenes or heterocycles within 20 minutes at 0-25 °C using the bimetallic combination pTol2Zn2LiOR [R = (CH2)2N(Me)(CH2)2NMe2] in toluene. The resulting diaryl- or diheteroarylzincs reacted well with allylic bromides and acyl chlorides to provide functionalized (hetero)- aryl iodides in good yields.
Generation of Phosphonium Sites on Sulfated Zirconium Oxide: Relationship to Br?nsted Acid Strength of Surface -OH Sites
Rodriguez, Jessica,Culver, Damien B.,Conley, Matthew P.
supporting information, p. 1484 - 1488 (2019/01/25)
The reaction of (tBu)2ArP (1a-h), where the para position of the Ar group contains electron-donating or electron-withdrawing groups, with sulfated zirconium oxide partially dehydroxylated at 300 °C (SZO300) forms [(tBu)2ArPH][SZO300] (2a-h). The equilibrium binding constants of 1a-h to SZO300 are related to the pKa of [(tBu)2ArPH]; R3P that form less acidic phosphoniums (high pKa values) bind stronger to SZO300 than R3P that form more acidic phosphoniums (low pKa values). These studies show that Br?nsted acid sites on the surface of SZO300 are not superacidic.
