1733-63-7Relevant articles and documents
The regioisomeric triphenylaminoethanols - Comparison of their efficiency in enantioselective catalysis
Braun, Manfred,Fleischer, Ralf,Mai, Brigitte,Schneider, Marc-Andre,Lachenicht, Stefan
, p. 474 - 482 (2004)
Both enantiomers of the novel amino alcohol (R)- and (S)-2 are prepared from the corresponding enantiomer of the mandelic acid-derived ethanediol 3. The regioisomeric amino alcohols 1 and 2 are converted into the imines 7 and 8, respectively. Titanium com
Reactions on Aromatic Olefins Induced by Aminium Salts: Protic-Acid or Radical Cation Catalyzed Processes
Ciminale, Francesco,Lopez, Luigi,Mele, Giuseppe
, p. 12685 - 12696 (1994)
Aromatic olefins by reaction with aminium salts lead, in strongly acidic reaction media, to different reaction products, arising from the intermediate formation of carbocation or radical-cation species.
Palladium-catalyzed multiple arylation of phenyl ketones with aryl bromides
Satoh, Tetsuya,Kametani, Yoko,Terao, Yoshito,Miura, Masahiro,Nomura, Masakatsu
, p. 5345 - 5348 (1999)
Benzyl phenyl ketones undergo triarylation upon treatment with excess aryl bromides in the presence of a catalytic amount of Pd(PPh3)4 and Cs2CO3 as base in o-xylene on the α- and two ortho-positions of the carb
The acid dissociation constant of triphenylethenethiol, a simple thioenol, and that of its oxygen-enol analog
Chiang, Yvonne,Kresge, A. Jerry,Schepp, Norman P.,Popik, Vladimir V.,Rappoport, Zvi,Selzer, Tzvia
, p. 657 - 661 (1998)
The acidity constant, pQ(a)(E) = 8.49, for the stable thioenol, triphenylethenethiol, was determined by spectrophotometric titration, and that, pQ(a)(E) = 11.37, for its unstable oxygen analog, triphenylethenol, was determined by analysis of its ketonizat
Jones,Miller
, p. 1960 (1967)
Chemoselectivity of Pinacol Rearrangement Originate by Different Hexafluoroantimonate Oxidant
Chen, Xiaoyu,Wu, Chunlei,Li, Jia,Li, Yue
, p. 22 - 26 (2019)
Using 1,1,2-triphenylethane-1,2-diol, AgSbF6, and NOSbF6, two different carbonyl products of rearrangement were synthesized: neutral ketone compound 1,2,2-triphenylethanone (1) from NOSbF6 and coordination complex of Ag io
Palladium-catalyzed synthesis of α-aryl acetophenones from styryl ethers and aryl diazonium saltsviaregioselective Heck arylation at room temperature
Venkatesh, Rapelly,Singh, Adesh Kumar,Lee, Yong Rok,Kandasamy, Jeyakumar
, p. 7832 - 7837 (2021/09/28)
Preparation of α-aryl acetophenones from styryl ethers and aryldiazonium salts is described. The reaction is catalyzed by palladium acetate at room temperature in the absence of ligand and base. The developed method is highly attractive in terms of reaction conditions, substrate scope, functional group tolerance and yields. Synthetic applications of the present method are demonstrated by preparing α-aryl indoles and 3-aryl isocoumarin from styryl ethers.
Palladium-catalyzed denitrative α-arylation of ketones with nitroarenes
Li, Zhirong,Peng, Yonggang,Wu, Tao
supporting information, (2021/02/16)
The palladium-catalyzed α-arylation of ketones with readily available nitroarenes and nitroheteroarenes provides access to useful α-aryl and α-heteroaryl ketones. The use of the Pd/ BrettPhos catalysts was critical to achieve high efficiency for these transformations, whereas other catalysts led to decreased yields or no conversions. The intramolecular type substrate was also applied in this methodology and gave a chromone derivative. Polyaromatic carbonyl compounds can be easily obtained by multicomponent tandem reactions, via nucleophilic aromatic substitution (SNAr) or cross-coupling reaction followed by this denitrative arylation. Kinetic experiments show that the electronic effect of nitrobenzenes has a greater effect on the reaction rate than the electronic effect of ketones.
