Catalysts

Journal Browser

► Journal Browser

Special Issue Editors

Special Issue Information

Dear Colleagues,

Reactions of hydrocarbons and alcohols occurring with the functionalization of C-H bonds can be catalyzed by metal complexes. These transformations are widely applied for organic synthesis, water photo-oxidation, the fixation of CO, CO₂ and N₂, etc. The efficient and selective functionalization of C–H bonds in saturated and aromatic hydrocarbons is one of the very important goals of organic chemistry. Many reactions of various organic compounds occur via C–H bond functionalization, that is, replacing the hydrogen atom by any other group. All these processes lead to the formation of extremely valuable chemical products. New catalytic systems based on metal complexes have been discovered during the last decades, which allow us to introduce various groups into aromatic and even saturated hydrocarbons and their derivatives, as well as other C–H compounds (see, for example, A. E. Shilov, G. B. Shul’pin, “Activation and Catalytic Reactions of Saturated Hydrocarbons in the Presence of Metal Complexes”, Kluwer Academic Publishers, Dordrecht/Boston/London/Moscow 2002; G. B. Shul’pin, “New Trends in Oxidative Functionalization of Carbon–Hydrogen Bonds: A Review”, Catalysts 2016, 6(4), 50; F. Roudesly, J. Oble, G. Poli, “Metal-catalyzed CH activation/functionalization: The fundamentals”, J. Mol. Catal., A: Chem. 2017, 426, 275–296; D. S. Nesterov, O. V. Nesterova, A. J. L. Pombeiro, “Homo- and heterometallic polynuclear transition metal catalysts for alkane C-H bonds oxidative functionalization: Recent advances”, Coord. Chem. Rev. 2018, 355, 199–222; Alkane Funcionalization, Eds. A. J. L. Pombeiro, M. F. C. Guedes da Silva, J. Wiley & Sons Ltd. Hoboken/Chichester, 2019.) and oxidize alcohols into aldehydes, ketones and acids.

Full comprehensive and mini-reviews covering various fields of catalytic transformations and highlighting specific problems, describing new unusual catalysts, new unusual solvents, new methods of inducing reactions (by light irradiation, etc.), will be very helpful for the reader. The description of new methods applied to light alkanes, including methane. will be especially intriguing.

Prof. Dr. Georgiy B. Shul'pin
Dr. Kamran T. Mahmudov
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Catalysts is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2700 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

saturated hydrocarbons
aromatic hydrocarbons
olefins
alcohols, C‒H functionalization
oxidation
homogeneous catalysis
supported complex catalysts
peroxides
hydrogen peroxide
reaction mechanisms

Published Papers (2 papers)

Download All Papers

Research

Jump to: Review

20 pages, 4312 KiB

Open AccessArticle

New Cu₄Na₄- and Cu₅-Based Phenylsilsesquioxanes. Synthesis via Complexation with 1,10-Phenanthroline, Structures and High Catalytic Activity in Alkane Oxidations with Peroxides in Acetonitrile

by Grigorii S. Astakhov, Mikhail M. Levitsky, Alexander A. Korlyukov, Lidia S. Shul’pina, Elena S. Shubina, Nikolay S. Ikonnikov, Anna V. Vologzhanina, Aleksey N. Bilyachenko, Pavel V. Dorovatovskii, Yuriy N. Kozlov and Georgiy B. Shul’pin

Catalysts 2019, 9(9), 701; https://doi.org/10.3390/catal9090701 - 21 Aug 2019

Cited by 15 | Viewed by 3779

Abstract

Self-assembly of copper(II)phenylsilsesquioxane assisted by the use of 1,10-phenanthroline (phen) results in isolation of two unusual cage-like compounds: (PhSiO_1,5)₁₂(CuO)₄(NaO_0.5)₄(phen)₄ 1 and (PhSiO_1,5)₆(PhSiO_1,5)₇(HO_0.5)₂(CuO)₅(O_0.25)₂(phen)₃ 2. X-Ray diffraction study revealed extraordinaire molecular architectures of both products. Namely, complex 1 includes single cyclic (PhSiO_1,5)₁₂ silsesquioxane ligand. Four sodium ions of 1 are additionally ligated by 1,10-phenanthrolines. In turn, “sodium-less” complex 2 represents coordination of 1,10-phenanthrolines to copper ions. Two silsesquioxane ligands of 2 are: (i) noncondensed cubane of a rare Si₆-type and (ii) unprecedented Si₇-based ligand including two HOSiO_1.5 fragments. These silanol units were formed due to removal of phenyl groups from silicon atoms, observed in mild conditions. The presence of phenanthroline ligands in products 1 and 2 favored the π–π stacking interactions between neighboring cages. Noticeable that in the case of 1 all four phenanthrolines participated in such supramolecular organization, unlike to complex 2 where one of the three phenanthrolines is not “supramolecularly active”. Complexes 1 and 2 were found to be very efficient precatalysts in oxidations with hydroperoxides. A new method for the determination of the participation of hydroxyl radicals has been developed. Full article

(This article belongs to the Special Issue Advance in Catalytic C−H Functionalization for Chemical Synthesis and Other Applications)

► Show Figures

Graphical abstract

Review

Jump to: Research

19 pages, 10874 KiB

Open AccessFeature PaperReview

Transfer Hydrogenation from 2-propanol to Acetophenone Catalyzed by [RuCl₂(η⁶-arene)P] (P = monophosphine) and [Rh(PP)₂]X (PP = diphosphine, X = Cl⁻, BF₄⁻) Complexes

by Alberto Mannu, Arnald Grabulosa and Salvatore Baldino

Catalysts 2020, 10(2), 162; https://doi.org/10.3390/catal10020162 - 01 Feb 2020

Cited by 11 | Viewed by 4007

Abstract

The reduction of ketones through homogeneous transfer hydrogenation catalyzed by transition metals is one of the most important routes for obtaining alcohols from carbonyl compounds. The interest of this method increases when opportune catalytic precursors are able to perform the transformation in an asymmetric fashion, generating enantiomerically enriched chiral alcohols. This reaction has been extensively studied in terms of catalysts and variety of substrates. A large amount of information about the possible mechanisms is available nowadays, which has been of high importance for the development of systems with excellent outcomes in terms of conversion, enantioselectivity and Turn Over Frequency. On the other side, many mechanistic aspects are still unclear, especially for those catalytic precursors which have shown only moderate performances in transfer hydeogenation. This is the case of neutral [RuCl₂(η⁶-arene)(P)] and cationic [Rh(PP)₂]X (X = anion; P and PP = mono- and bidentate phosphine, respectively) complexes. Herein, a summary of the known information about the Transfer Hydrogenation catalyzed by these complexes is provided with a continuous focus on the more relevant mechanistic features. Full article

(This article belongs to the Special Issue Advance in Catalytic C−H Functionalization for Chemical Synthesis and Other Applications)

► Show Figures