Article
Multidisciplinary Sciences
Feng-Hua Zhang, Xiaochong Guo, Xianrong Zeng, Zhaobin Wang
Summary: The authors described an asymmetric three-component 1,4-dialkylation of 1,3-enynes via dual photoredox and chromium catalysis to provide chiral allenols. This method has a broad substrate scope and good functional group compatibility, while allowing simultaneous control of axial and central chiralities.
NATURE COMMUNICATIONS
(2022)
Article
Chemistry, Organic
Joshua A. Clarke, Art van der Est, Georgii Nikonov
Summary: The study presents a base-catalyzed hydrosilylation of nitriles to amines and esters to silylated alcohols, showing successful reactions in the presence of basic functional groups but failure for acidic substrates. Carbonyl functional groups, such as aldehydes, ketones, esters and carbamides, are reduced to corresponding alcohols and amines. Ester reduction can be selective in the presence of nitriles, but selectivity decreases for ester/carboxamide and carboxamide/nitrile pairs. Competitive experiments determined the preference in functional group reactivity as ester > carboxamide > nitrile.
EUROPEAN JOURNAL OF ORGANIC CHEMISTRY
(2021)
Article
Chemistry, Applied
Izabela Weglarz, Karol Michalak, Jacek Mlynarski
Summary: The study reported the first successful enantioselective hydrosilylation of cyclic imines promoted by a chiral zinc complex, achieving pharmaceutically relevant enantioenriched 2-aryl-substituted pyrrolidines with excellent enantioselectivities. The synthetic utility of the presented methodology was demonstrated in an efficient synthesis of pharmaceutical drug precursors to Aticaprant and Larotrectinib.
ADVANCED SYNTHESIS & CATALYSIS
(2021)
Article
Chemistry, Multidisciplinary
Raju Chambenahalli, R. M. Bhargav, Karl N. McCabe, Alex P. Andrews, Florian Ritter, Jun Okuda, Laurent Maron, Ajay Venugopal
Summary: Recent research has highlighted zinc compounds as catalysts for carbon dioxide reduction, including hydrosilylation and hydroboration. Factors influencing the extent of carbon dioxide reduction include electrophilicity at the zinc center and the denticity of ancillary ligands. Additionally, the addition of Lewis acids can markedly impact carbon dioxide reduction.
CHEMISTRY-A EUROPEAN JOURNAL
(2021)
Article
Chemistry, Multidisciplinary
Yaoyu Liang, Uttam Kumar Das, Jie Luo, Yael Diskin-Posner, Liat Avram, David Milstein
Summary: This article presents a catalyst based on magnesium complexes and explores its potential in environmentally friendly organic transformations through metal-ligand cooperation for hydrogen activation. The catalyst showed remarkable performance in semihydrogenation of alkynes and hydrogenation of alkenes, providing high yields and selectivities.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2022)
Article
Chemistry, Organic
Wan-Ying Qi, Jing-Song Zhen, Xiao-Hong Xu, Xian Du, Yi-Hui Li, Han Yuan, Yun-Shi Guan, Xun Wei, Zi-Ying Wang, Guohai Liang, Yong Luo
Summary: The study describes a base-mediated reaction for synthesizing geminal silylboronates with a benzylic proton under mild conditions, as well as achieving deaminative silylation of aryl ammonium salts. This strategy, featuring high efficiency, mild reaction conditions, and good functional group tolerance, provides efficient pathways for late-stage functionalization of amines.
Article
Chemistry, Physical
Pamela V. S. Nylund, Baptiste Monney, Christoph Weder, Martin Albrecht
Summary: The use of N-heterocyclic carbene (NHC) iron complexes as catalysts for the polymerization of lactide shows promising results, with high molecular weight, narrow dispersity, and high polymerization rate constant. The robustness of the catalyst makes it suitable for large-scale industrial applications.
CATALYSIS SCIENCE & TECHNOLOGY
(2022)
Article
Chemistry, Multidisciplinary
Nicolas Adet, David Specklin, Christophe Gourlaouen, Thibault Damiens, Beatrice Jacques, Rudolf J. Wehmschulte, Samuel Dagorne
Summary: The synthesis of Zn[HexCB(11)Cl(11)](2), 3, using the hexyl-substituted anion showed high catalytic activity in hydrosilylation reactions, attributed to its high solution Lewis acidity. This compound exhibited facile displacement of counterions and was characterized through various techniques including NMR, mass spectrometry, and DFT studies.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Chemistry, Inorganic & Nuclear
Aziza Adilkhanova, Valeriya F. F. Frolova, Azamat Yessengazin, Oezguer Oztopcu, Kristina A. Gudun, Medet Segizbayev, Nikita A. A. Matsokin, Anton Dmitrienko, Melanie Pilkington, Andrey Y. Y. Khalimon
Summary: A series of Ni(II) pincer complexes containing imino-POCNR, amino-POCNR2, and bis(phosphinite) POCOP ligands were synthesized and tested as catalysts for the deoxygenative hydroboration of amides. The highest reactivity was observed for secondary carboxamides with the bis(phosphinite) hydride complex (POCOP)NiH. The reactions showed selectivity for deoxygenation of secondary amides to amines under mild conditions, and the mechanism was proposed to involve C-O bond cleavage triggered by dehydrogenative N-borylation.
DALTON TRANSACTIONS
(2023)
Article
Chemistry, Multidisciplinary
Itay Raz, Roman Dobrovetsky
Summary: The synthesis of a dicationic Zn+2-based complex with a tripodal tris(2-pyridylmethyl)amine (TPA) ligand is reported, which serves as a highly chemoselective catalyst for hydrosilylation reactions of alkynes. Unlike typical Zn-catalyzed hydrosilylation reactions, this system activates C equivalent to C triple bonds instead of Si-H bonds, which explains its high chemoselectivity.
CHEMISTRY-A EUROPEAN JOURNAL
(2023)
Article
Chemistry, Physical
Rebecca A. Kehner, Matthew Christian Hewitt, Liela Bayeh-Romero
Summary: This study presents a mild method for the in situ preparation and use of zirconium hydride catalysts, which shows excellent performance in substrate reduction and exhibits broad functional group tolerability, potentially expanding the applications of zirconium hydride catalysis.
Article
Chemistry, Organic
Subham Pradhan, Raman Vijaya Sankar, Chidambaram Gunanathan
Summary: This study reports a simple metal-free hydroboration method for nitriles using [H-B-9-BBN](2) as a catalyst and a coupling reagent, allowing for the synthesis of primary amines and secondary amides. The proposed mechanism involves a sequential double hydroboration-transborylation pathway based on the reaction of H-B-9-BBN with nitriles.
JOURNAL OF ORGANIC CHEMISTRY
(2022)
Article
Chemistry, Physical
Hanna Stachowiak-Dluzynska, Grzegorz Hreczycho
Summary: A cobalt-catalyzed addition of hydrosilanes to unsaturated carbon-oxygen bonds has been developed using easily accessible and inexpensive PNP-type pincer ligands. The reaction efficiently transforms a wide range of ketones into silyl ethers or secondary alcohols with high yields. The use of silanes as both substrates and activators eliminates the need for external additives.
Article
Chemistry, Organic
Xin Li, Weili Si, Zhanhui Liu, Haitao Qian, Tingxue Wang, Shengnan Leng, Jinwei Sun, Yan Jiao, Xuan Zhang
Summary: A photocatalyst- and metal-free approach is presented in this study, enabling the generation of an alkyl radical from a primary alcohol and subsequent C(sp(3))-C(sp(3)) bond formation with an activated olefin. This protocol for converting a C-OH bond to a C-C bond exhibits high functionality tolerance and can be successfully utilized in late-stage functionalization of pharmaceuticals.
Article
Polymer Science
Mateusz Gosecki, Monika Gosecka, Malgorzata Urbaniak
Summary: A new route to polyester polyols synthesis via oxidative esterification of aliphatic alpha,omega-diols in aqueous media at 30 degrees C under atmospheric pressure is demonstrated. The properties of obtained polyesters are dependent on the diol used and can be tailored using a mixture of diols. This work provides a quick and convenient method for polyester polyol synthesis feasible in any laboratory.
Article
Chemistry, Multidisciplinary
Alexey Volkov, Karl P. J. Gustafson, Cheuk-Wai Tai, Oscar Verho, Jan-E. Backvall, Hans Adolfsson
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2015)
Article
Chemistry, Applied
Jessica Margalef, Tove Slagbrand, Fredrik Tinnis, Hans Adolfsson, Montserrat Dieguez, Oscar Pamies
ADVANCED SYNTHESIS & CATALYSIS
(2016)
Article
Chemistry, Multidisciplinary
Fredrik Tinnis, Alexey Volkov, Tove Slagbrand, Hans Adolfsson
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2016)
Review
Chemistry, Multidisciplinary
Atexey Volkov, Fredrik Tinnis, Tove Stagbrand, Paz Trillo, Hans Adolfsson
CHEMICAL SOCIETY REVIEWS
(2016)
Review
Chemistry, Organic
Helena Lundberg, Hans Adolfsson
SYNTHESIS-STUTTGART
(2016)
Article
Chemistry, Multidisciplinary
Helena Lundberg, Fredrik Tinnis, Jiji Zhang, Andres G. Algarra, Fahmi Himo, Hans Adolfsson
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2017)
Article
Chemistry, Physical
Tove Slagbrand, Alexey Volkov, Paz Trillo, Fredrik Tinnis, Hans Adolfsson
Article
Chemistry, Multidisciplinary
Paz Trillo, Tove Slagbrand, Fredrik Tinnis, Hans Adolfsson
Article
Chemistry, Multidisciplinary
Paz Trillo, Tove Slagbrand, Hans Adolfsson
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2018)
Article
Chemistry, Applied
Helena Lundberg, Fredrik Tinnis, Hans Adolfsson
APPLIED ORGANOMETALLIC CHEMISTRY
(2019)
Article
Chemistry, Physical
Paz Trillo, Hans Adolfsson
Article
Chemistry, Multidisciplinary
Paz Trillo, Tove Slagbrand, Fredrik Tinnis, Hans Adolfsson
CHEMICAL COMMUNICATIONS
(2017)
Article
Chemistry, Applied
Tove Slagbrand, Gabriella Kervefors, Fredrik Tinnis, Hans Adolfsson
ADVANCED SYNTHESIS & CATALYSIS
(2017)
Article
Chemistry, Organic
Fredrik Tinnis, Helena Lundberg, Tove Kivijarvi, Hans Adolfsson