Hydrogen Transfer. VI.1 Reaction of 1,3-Dimethyl-4-ethylbenzene and Ethylmesitylene with Methylcyclohexene. Transaralkylation Reaction of Diarylethanes2
Bisulfate Salt-Catalyzed Friedel–Crafts Benzylation of Arenes with Benzylic Alcohols
作者:Ren-Jin Tang、Thierry Milcent、Benoit Crousse
DOI:10.1021/acs.joc.8b02361
日期:2018.11.16
We report here a method of direct Friedel–Craftsbenzylation of arenes with benzylic alcohols using cheap and readily available bisulfate salt as the catalyst in hexafluoroisopropanol. The catalytic system is powerful with a quite diverse group of functionalized arenes and benzylic alcohols. These mild conditions provide a straightforward synthesis of a variety of unsymmetrical diarylmethanes in high
Cascade Reductive Friedel–Crafts Alkylation Catalyzed by Robust Iridium(III) Hydride Complexes Containing a Protic Triazolylidene Ligand
作者:Iryna D. Alshakova、Martin Albrecht
DOI:10.1021/acscatal.1c00740
日期:2021.8.6
multiple single-step reactions, in series or in a modular fashion, with laborious purification and potentially unstable intermediates. Cascade processes offer attractive synthetic remediation as they reduce time, energy, and waste associated with multistep syntheses. For example, triarylmethanes are traditionally prepared via several synthetic steps, and only a handful of cascade routes are known with limitations
Synthesis of diarylmethanes via a Friedel–Crafts benzylation using arenes and benzyl alcohols in the presence of triphenylphosphine ditriflate
作者:Mohammad Mehdi Khodaei、Ehsan Nazari
DOI:10.1016/j.tetlet.2012.07.051
日期:2012.9
Triphenylphosphine ditriflate (TPPD) was found to be an efficient promoter for the Friedel–Craftsbenzylation of arenes with benzyl alcohols in CH2Cl2 at room temperature. The good yields, the 1:1 molar ratio of arene and benzyl alcohol, the benzylation of chlorobenzene as a nonactivated aromatic compound at room temperature, and no by-product formation are the main advantages of this procedure.
Iron-Catalyzed Arylation of Aromatic Ketones and Aldehydes Mediated by Organosilanes
作者:Risto Savela、Marcin Majewski、Reko Leino
DOI:10.1002/ejoc.201402023
日期:2014.7
arylation of aromatic carbonyl compounds is reported. The use of 4 % FeCl3 or Fe(acac)3 as the catalyst, in combination with a slight excess of chlorotrimethylsilane and triethylsilane, chlorination of benzylic ketones and aldehydes with subsequent Friedel–Craftsalkylation of arenes is achieved. Although the method is limited by the general constraints associated with Friedel–Craftsalkylation reactions