51770-85-5Relevant academic research and scientific papers
A New Preparation Method for the Alkylation Catalysts of Aromatic Compounds Based on Immobilized AlCl3
Bykov,Belyaev
, p. 328 - 330 (2021/04/26)
Abstract: A new method for the preparation of active catalysts for the alkylation and transalkylation of aromatic compounds (benzene and toluene) based on aluminum chloride immobilized on the surface of silica gel was developed. The alkylation occurred wi
New Heterogeneous Alkylation Catalysts Based on Niobium Pentachloride
Bykov,Belyaev,Butenko
, p. 688 - 689 (2018/10/02)
New active catalysts based on niobium pentachloride immobilized on the surface of silica gel or aluminum oxide for the alkylation of aromatic compounds were prepared. The reaction occurs with a high rate at room temperature. Thus, the conversion of 1-hexene in the alkylation of benzene or toluene was close to 100% only 5 min after the onset of the reaction.
Ionic iron(iii) complexes of bis(phenol)-functionalized imidazolium cations: Synthesis, structures and catalysis for aryl Grignard cross-coupling of alkyl halides
Deng, Hai-Ning,Xing, Ya-Lin,Xia, Cong-Liang,Sun, Hong-Mei,Shen, Qi,Zhang, Yong
, p. 11597 - 11607 (2013/02/23)
A series of bis(phenol)-functionalized imidazolium salts, 1,3-bis(4,6-di-R1-2-hydroxybenzyl)-2-R2-4,5-di-R 3-imidazolium chlorides H3LnCl (R1 = tBu, R2 = R3 = H, H3L 1Cl, 1; R1 = CH3, R2 = R3 = H, H3L2Cl, 2; R1 = tBu, R 2 = H, R3 = Cl, H3L3Cl, 3; R 1 = tBu, R2 = CH3, R3 = H, H3L4Cl, 4), were used to produce a novel series of ionic iron(iii) complexes [H3Ln][FeX4] (n = 1, X = Cl, 5; n = 2, X = Cl, 6; n = 3, X = Cl, 7; n = 4, X = Cl, 8; n = 1, X = Br, 9; n = 3, X = Br, 10). All of the complexes were characterized by Raman spectroscopy and electrospray ionization mass spectrometry. Elemental analysis and X-ray crystallography were also used. All of the complexes were non-hygroscopic and air-stable, with five of them existing as solids (5, 7-10) and one as an oil (6) at room temperature. A preliminary catalytic study on the cross-coupling reactions of aryl Grignard reagents with primary and secondary alkyl halides bearing β-hydrogens, revealed that all of the ionic iron(iii) complexes exhibited good to excellent catalytic activity. Complexes 5, 6 and 8 exhibited optimal activity, whereas 7, 9 and 10 showed only moderate activity. Furthermore, by simply decanting the cross-coupling product in the ether layer, complexes 5 and 6 could be reused in at least seven successive runs without significant loss in catalytic activity.
Synthesis of anionic iron(II) complex bearing an n-heterocyclic carbene ligand and its catalysis for aryl grignard cross-coupling of alkyl halides
Gao, Huan-Huan,Yan, Chun-Hui,Tao, Xue-Ping,Xia, Ying,Sun, Hong-Mei,Shen, Qi,Zhang, Yong
experimental part, p. 4189 - 4192 (2011/01/03)
The reaction of 1,3-bis(2,6-diisopropylphenyl)imidazol-2-ylidene (IPr) with one equivalent of a novel imidazolium salt of iron(II), [FeBr 3(C4H8O)](HIPr)·C4H 8O (1), afforded the anionic iron(II) comp
Palladium-catalyzed hydroalkylation of styrenes with organozinc reagents to form carbon - carbon sp3 - sp3 bonds under oxidative conditions
Urkalan, Kaveri Balan,Sigman, Matthew S.
supporting information; experimental part, p. 18042 - 18043 (2010/03/04)
(Chemical Equation Presented) An unconventional route for the formation of sp3-sp3 C-C bonds from various styrenes and an organozinc reagent in a formal alkene hydroalkylation process is detailed. Mechanistically, this process is pro
Amino alcohols as ligands for nickel-catalyzed Suzuki reactions of unactivated alkyl halides, including secondary alkyl chlorides, with arylboronic acids
Gonzalez-Bobes, Francisco,Fu, Gregory C.
, p. 5360 - 5361 (2007/10/03)
Suzuki cross-coupling reactions of an unprecedented array of unactivated primary and secondary alkyl halides (including challenging alkyl chlorides) can be accomplished through the use of nickel/amino alcohol-based catalysts. Both the nickel precatalyst and the amino alcohols (prolinol or trans-2-aminocyclohexanol) are commercially available and air-stable. In view of the remarkable diversity of amino alcohols that are readily accessible, this discovery may open the door to the rapid development of versatile catalysts for a wide range of cross-coupling processes. Copyright
