95138-93-5Relevant academic research and scientific papers
Highly basic alkyl-substituted bis(benzhydryl) CaII and YbII complexes with β-CH–M agostic interactions
Cherkasov, Anton V.,Nelyubina, Yulia V.,Selikhov, Alexander N.,Trifonov, Alexander A.
, p. 334 - 336 (2021)
The reaction between potassium derivative {[(4-ButC6H4)2CH]?K+}n and alkyl iodides gives new 1,1-bis(4-tert-butylphenyl)alkanes which can be deprotonated with BunNa to produce species [(4-ButC6H4)2CR]?Na+ (R = Me, Bui). The salt metathesis of the latter with base-free CaI2 or YbI2 affords novel bis(hydrocarbyl) complexes [(4-ButC6H4)2CR]2M(TMEDA) (M = Ca, R = Me; M = Yb, R = Bui). The hyperconjugation of the central carbanion with alkyl groups pronouncedly enhances the basic properties of the compounds which would perform CH bond activation in toluene and thiophene, in distinction to the related ‘nonalkylated’ analogues with (4-ButC6H4)2CH? ligand.
Synthesis of [1]benzothiopheno[2,3-b][1]benzothiophene derivatives through iodine-mediated sulfuration reaction of 1,1-diarylethylenes
Sakai, Shuta,Sato, Kazuki,Yoshida, Kazuhiro
supporting information, (2019/12/27)
Acceleration of the reaction for the synthesis of [1]benzothiopheno[2,3-b][1]benzothiophenes (BTBTs) from 1,1-diarylethylenes was accomplished by the addition of molecular iodine. Postulated intermediates 3-arylbenzo[b]thiophenes were also selectively prepared by simply changing the amount of iodine and the reaction time.
Thermally Stable Ln(II) and Ca(II) Bis(benzhydryl) Complexes: Excellent Precatalysts for Intermolecular Hydrophosphination of C-C Multiple Bonds
Selikhov, Alexander N.,Plankin, Gleb S.,Cherkasov, Anton V.,Shavyrin, Andrey S.,Louyriac, Elisa,Maron, Laurent,Trifonov, Alexander A.
, p. 5325 - 5334 (2019/04/17)
A series of Ln(II) and Ca(II) bis(alkyl) complexes with bulky benzhydryl ligands, [(p-tBu-C6H4)2CH]2M(Ln) (M = Sm, L = DME, n = 2 (1); M = Sm, Yb, Ca, L = TMEDA, n = 1 (2, 3, 4), were synthesized by t
Structural requirements for decarbonylative α,α-diarylation reaction of 2-methoxyalkanoic acids in phosphorus pentoxide-methanesulfonic acid mixture yielding 1,1-diarylalkane homologs
Yonezawa, Noriyuki,Hino, Tetsuo,Tokita, Yoshimi,Matsuda, Kazuhisa,Ikeda, Tomiki
, p. 14287 - 14296 (2007/10/03)
2-Methoxyalkanoic acids were found to undergo consecutive decarbonylative α,α-diarylation in P2O5-MsOH instead of Friedel-Crafts type arylation on the carbonyl carbon. The influence of the substituents of the arenes and the carboxylic acids in this reaction was elucidated based on the reaction yields. The reaction behavior was found to be primarily governed by the electron-withdrawing/releasing property of the α-substituents on the carboxylic acids as well as the positive species-accepting ability of the arenes. The steric hindrance was shown to participate in determining the reaction feasibility as a secondary factor.
