Article
Chemistry, Inorganic & Nuclear
Philipp C. Stegner, Jonathan Eyselein, Gerd M. Ballmann, Jens Langer, Jochen Schmidt, Sjoerd Harder
Summary: The chiral building block (R)-(+)-2,2 '-diamino-1,1 '-binaphthyl, (R)-BINAM, was converted to N-substituted proligands and alkaline earth metal catalysts. Quadrant models analysis showed that ligands with specific substituents provided the best steric discrimination in enantioselective intramolecular alkene hydroamination reactions.
DALTON TRANSACTIONS
(2021)
Article
Chemistry, Inorganic & Nuclear
Bahareh Rezaei Kheirkhah, Wimonsiri Huadsai, Phil Liebing, Seibastien Bontemps, Matthias Westerhausen
Summary: Metalation of N-(2,6-dibenzhydryl-4-tolyl)adamantane-1-carboxamide with M(NMe2)4 (M = Ti, Zr, Hf) affords amidate complexes 2 as well as bis(amidate) compounds 3 and 4. In compound 2, the amidate ligand acts as a monodentate base via the oxygen atom with the Ti center. Compounds 3 and 4 contain two bidentate amidate ligands, resulting in hexacoordinate group IV metal atoms.
Article
Chemistry, Inorganic & Nuclear
Shun Ohta, Narumi Miura, Keiichiro Saitoh, Keigo Itoh, Sora Satoh, Ryo Miyamoto, Masaaki Okazaki
Summary: The study revealed a significant impact of terminal ligands on the coordination features of deprotonated 2,2'-bis(indolyl)methanes, showing flexibility in coordination modes. The synthesized dichlorido complexes exhibited high catalytic activity and selectivity in alkyne cyclotrimerization reactions, with the highest isolated yield among reactions favoring the 1,3,5-form using Ti-based catalyst systems.
Article
Chemistry, Multidisciplinary
Pavel Zatsepin, Jun-Hyeong Kim, Michael R. Gau, Patrick J. Carroll, Bimal Pudasaini, Mu-Hyun Baik, Daniel J. Mindiola
Summary: Highly modular and rational syntheses of titanium compounds with various telluride motifs have been achieved in this study. The structures and properties of these compounds have been characterized through crystallography, spectroscopy, and theoretical studies.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2022)
Article
Chemistry, Multidisciplinary
Bingnan Du, Chun-Ming Chan, Yuxin Ouyang, Kalok Chan, Zhenyang Lin, Wing-Yiu Yu
Summary: This study presents a novel method for the synthesis of high-value amides through NiH-catalyzed anti-Markovnikov intermolecular hydroamidation of unactivated alkenes. The protocol allows for the direct synthesis of structurally diverse N-alkyl amides using abundant carboxylic acid feedstocks and has shown success with both unactivated alkenes and natural products. Mechanistic studies suggest that the observed regioselectivities are controlled by the sterical environment of the coupling reaction.
COMMUNICATIONS CHEMISTRY
(2022)
Article
Chemistry, Inorganic & Nuclear
Benjamin J. Frogley, Anthony F. Hill, Steven S. Welsh
Summary: Three examples of 9-bromo-10-(alkylidynyl)anthracenes were prepared using modified reaction protocols, with different ancillary ligands affecting the outcome of cross-coupling reactions. The study also revealed the formation of trimetallic bow-tie complexes when using smaller ligands.
DALTON TRANSACTIONS
(2021)
Review
Chemistry, Multidisciplinary
Ian A. Tonks
Summary: This study discusses the recent progress in Ti-catalyzed oxidative amination reactions, highlighting the importance of understanding the reactive species and mechanisms involved. The research shows that low-valent Ti intermediates can be stabilized through coordination and that reductive elimination processes occur through pi-type electrocyclic reactions. These findings are crucial for advancing catalytic applications involving titanium.
ACCOUNTS OF CHEMICAL RESEARCH
(2021)
Article
Chemistry, Multidisciplinary
Mark D. Straub, Erik T. Ouellette, Michael A. Boreen, R. David Britt, Khetpakorn Chakarawet, Iskander Douair, Colin A. Gould, Laurent Maron, Iker Del Rosal, David Villarreal, Stefan G. Minasian, John Arnold
Summary: The paragraph translated above discusses the reduction reactions of U(III) and Th(IV) metal complexes with KC8, analyzing the structures and reactivity of the resulting products.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2021)
Article
Chemistry, Inorganic & Nuclear
Jessica K. Bilyj, Nicole V. Silajew, Paul V. Bernhardt
Summary: The tetradentate N2S2 Schiff base ligands show versatile chelating behavior for copper and stabilize high oxidation states. The Ni coordination chemistry of these ligands leads to a variety of products, including dinuclear Ni-II complexes derived from radical homocoupling reactions. These complexes are redox active and exhibit new electronic transitions in spectroelectrochemistry.
DALTON TRANSACTIONS
(2021)
Article
Chemistry, Multidisciplinary
Hamaela Razaq, Nabila Mehwish, Jingyi Xia, Chuanliang Feng
Summary: In this study, a hydrogel system with exceptional mechanical properties and high conductivity was reported, surpassing most previously reported C2-symmetrical hydrogels. The co-assembled hydrogels displayed notable performance and have the potential to be used in electronic devices and sensors.
CHEMISTRY-A EUROPEAN JOURNAL
(2023)
Article
Multidisciplinary Sciences
Siyuan Sun, Nicolas A. Diaz, Pavel Nagorny
Summary: This communication presents the synthesis of new bis-oxazoline chiral ligands (SPIROX) from the C2-symmetric spirocyclic scaffold (SPIROL). Key diacid intermediate (R,R,R)-7 was obtained in a three-step sequence and subsequently coupled with (R)- and (S)-phenylglycinols to form diastereomeric SPIROX ligands. These ligands, when complexed with CuCl and Cu(OTf)(2), acted as active catalysts promoting an asymmetric reaction resulting in high yield and selectivity.
Article
Chemistry, Inorganic & Nuclear
Majeda Al Hareri, David J. H. Emslie
Summary: The reaction of H-2(acen), H-2(cis-Cyacen) or H-2(trans-Cyacen) with [Zr(CH2SiMe3)(4)] at room temperature yielded corresponding compounds, which displayed trigonal prismatic shapes in the solid state and different stabilities and decomposition properties at different temperatures.
EUROPEAN JOURNAL OF INORGANIC CHEMISTRY
(2022)
Article
Chemistry, Physical
Wiebke Wackerow, Zeynabou Thiam, Edy Abou-Hamad, Walid Al Maksoud, Mohamed N. Hedhili, Jean-Marie Basset
Summary: The article discusses the unique catalytic properties of tungsten-hydrides supported on oxide supports, suggesting that supported tungsten-hydride complexes coexist on the support as bis-hydride and tris-hydride species.
JOURNAL OF PHYSICAL CHEMISTRY C
(2021)
Article
Chemistry, Inorganic & Nuclear
Inga-Alexandra Bischoff, Ronay Seydo Meme, Muniba Shahzad Bhatti, Bernd Morgenstern, Andre Schaefer
Summary: The synthesis and characterization of bis(indenyl)-tetrelocenophanes of germanium(II), tin(II), and lead(II), which belong to the bis(indenyl)metallocenophane-type species of p-block elements, are reported. The structural characterization of these species in the solid state reveals some unusual features, including a dispersion dimer and an arene complex.
Article
Chemistry, Inorganic & Nuclear
Peter Viereck, Stephan M. Rummelt, Natalia A. Soja, Tyler P. Pabst, Paul J. Chirik
Summary: Enantioenriched N-alkyl-imidazole-substituted pyridine dicarbene iron dialkyl complexes have been synthesized and characterized, showing a modest enantioselectivity in catalytic asymmetric hydrogenation reactions. Lowering the H-2 pressure increased the enantioselectivity, and further studies identified key reactions pathways and competitive reactions in the catalytic process. Monitoring the reaction by NMR spectroscopy provided insights into the catalytic mechanism.
Article
Chemistry, Multidisciplinary
Xiaoming Zhang, Sven Tobisch, Kai C. Hultzsch
CHEMISTRY-A EUROPEAN JOURNAL
(2015)
Article
Chemistry, Multidisciplinary
Alexander L. Reznichenko, Kai C. Hultzsch
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2012)
Article
Chemistry, Inorganic & Nuclear
Alexander L. Reznichenko, Kai C. Hultzsch
Article
Chemistry, Inorganic & Nuclear
Hiep N. Nguyen, Hyeunjoo Lee, Stephan Audoersch, Alexander L. Reznichenko, Agnieszka J. Nawara-Hultzsch, Bernd Schmidt, Kai C. Hultzsch
Article
Chemistry, Organic
Hiep N. Nguyen, Kai C. Hultzsch
EUROPEAN JOURNAL OF ORGANIC CHEMISTRY
(2019)
Article
Chemistry, Organic
Natalie Hofmann, Kai C. Hultzsch
EUROPEAN JOURNAL OF ORGANIC CHEMISTRY
(2019)
Article
Chemistry, Organic
Leonard Homberg, Alexander Roller, Kai C. Hultzsch
Article
Chemistry, Organic
Natalie Hofmann, Leonard Homberg, Kai C. Hultzsch
Review
Chemistry, Organic
Natalie Hofmann, Kai C. Hultzsch
Summary: ADC and HT are powerful tools in the multicomponent formation of N-heterocycles, starting from simple and commercially available reagents. Base metal-catalyzed strategies, using manganese, iron, cobalt, nickel, and copper catalysts, have become increasingly important in recent years. These strategies are highly atom-efficient and environmentally friendly, with no need for further reducing or oxidizing agents.
EUROPEAN JOURNAL OF ORGANIC CHEMISTRY
(2021)
Article
Multidisciplinary Sciences
Alexander Reznichenko, Ali Harlin
Summary: This article provides an overview of existing and emerging olefin production technologies, comparing them based on carbon intensity, efficiency, feedstock type, and availability. The study compares the technical and economic maturity of six principal olefin production routes and explores potential alternatives such as biomass, recycled plastic, carbon capture and storage, and carbon capture and utilization technologies. The findings suggest that adopting biomass-based green feedstock and recycled plastic-based olefins can reduce carbon footprint, while using best available technologies and introducing electrocracking in the fossil-based process can yield the highest impact. The adoption of Power-to-X approaches can eventually lead to carbon-neutral blue olefins, but further development and regulatory incentives are needed for economic viability.
SN APPLIED SCIENCES
(2022)
Article
Chemistry, Applied
Agnieszka J. Nawara-Hultzsch, Anandarup Goswami, Kai C. Hultzsch
Summary: A study on the influence of solvents and additives in enantioselective hydroamination/cyclization reactions showed that weakly coordinating polar solvents can increase reaction rates, while some additives can enhance enantioselectivity in cyclization reactions but decrease selectivity in hydroamination reactions.
ADVANCED SYNTHESIS & CATALYSIS
(2023)
Article
Chemistry, Applied
Lara H. Polak, John B. Soltys, Kai C. Hultzsch
Summary: The intermolecular anti-Markovnikov hydroamination of vinylsilanes was successfully achieved using five silyl-substituted ortho-terphenoxide yttrium complexes, resulting in excellent activity and complete anti-Markonikov selectivity.
ADVANCED SYNTHESIS & CATALYSIS
(2023)
Proceedings Paper
Materials Science, Ceramics
Niko Hellsten, Antti J. Karttunen, Charlotta Engblom, Alexander Reznichenko, Erika Rantala
ADVANCES IN POWDER AND CERAMIC MATERIALS SCIENCE
(2020)
