Article
Chemistry, Multidisciplinary
Amit Dahiya, Avetik G. Gevondian, Franziska Schoenebeck
Summary: We have developed a fully orthogonal C-O bond formation strategy by selectively coupling arylgermanes with alkyl alcohols (primary, secondary, and tertiary) as well as carboxylic acids. This method is tolerant to commonly used coupling handles and allows for rapid, air-tolerant, and mild C-O bond construction without the need for a base at room temperature.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Chemistry, Multidisciplinary
Halenur Ozer, Dilan Arslan, Bengi Ozgun Ozturk
Summary: In this study, in situ formed ruthenium hydride species from Grubbs type catalysts were used as efficient catalysts for dehydrogenative alcohol coupling and sequential cross-metathesis/dehydrogenative coupling reactions. The selectivity of the catalysts can be tuned by using different bases to obtain different products. With the presence of a new ligand, the performance of the catalyst was significantly improved, yielding products in quantitative yields.
NEW JOURNAL OF CHEMISTRY
(2021)
Article
Chemistry, Multidisciplinary
Kenta Mori, Midori Akiyama, Ko Inada, Yutaka Imamura, Yuichiro Ishibashi, Yusuke Takahira, Kyoko Nozaki, Takashi Okazoe
Summary: By introducing a seven-membered N-heterocyclic carbene (NHC) ligand, a significant increase in catalyst turnover number (TON) was achieved in the cross-metathesis of tetrafluoro-ethylene (TFE) and vinyl ethers. This study provides a new approach to enhance catalytic efficiency in such reactions.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2021)
Article
Chemistry, Organic
Ming Lei, Xingyu Chen, Yingjie Wang, Liran Zhang, Hong Zhu, Zhiqian Wang
Summary: A group-substitution synthesis of trivalent phosphines via a C-P activation of phosphonium salts was reported, expanding the synthetic pathways of phosphine compounds and proposing a new method for preparing chiral monophosphine ligands.
Article
Chemistry, Multidisciplinary
Md. Lutfor Rahman, Mohd Sani Sarjadi, Mohammed Salim Akhter, J. John Hannan, M. Shaheen Sarkar
Summary: A silica-coated magnetically separable Schiff-base palladium nanocatalyst was developed and successfully applied in the Suzuki-Miyaura reaction with excellent recyclability.
ARABIAN JOURNAL OF CHEMISTRY
(2022)
Article
Optics
Young-Hoon Kim, Sungjin Kim, Arvin Kakekhani, Jinwoo Park, Jaehyeok Park, Yong-Hee Lee, Hengxing Xu, Satyawan Nagane, Robert B. Wexler, Dong-Hyeok Kim, Seung Hyeon Jo, Laura Martinez-Sarti, Peng Tan, Aditya Sadhanala, Gyeong-Su Park, Young-Woon Kim, Bin Hu, Henk J. Bolink, Seunghyup Yoo, Richard H. Friend, Andrew M. Rappe, Tae-Woo Lee
Summary: In this study, a one-dopant alloying strategy was employed to enhance electroluminescence efficiencies of metal halide perovskite nanocrystals (PNCs) by reducing defect formation and enhancing charge carrier confinement. Surface-stabilizing agents and bromide vacancy healing agents were utilized to decrease defect density and improve carrier confinement, resulting in significant enhancement in performance.
Review
Materials Science, Multidisciplinary
Zaiwei Wang, Jiahuan Zhang, Wanlin Guo, Wanchun Xiang, Anders Hagfeldt
Summary: Inorganic halide perovskites have emerged as a new semiconductor material with outstanding photophysical properties and long-term stability, leading to significant progress in solar cell technology. By forming high-quality thin films and stabilizing the perovskite phases, inorganic perovskite solar cells have achieved a power conversion efficiency of 20.37%, providing guidance for further enhancing performance and stability.
Article
Chemistry, Multidisciplinary
Pawan Kumar, Tielyr D. Creason, Hadiah Fattal, Manila Sharma, Mao-Hua Du, Bayram Saparov
Summary: This study reports the preparation of silver(I) halides A(2)AgX(3) through solid-state synthesis and their potential attractiveness for optical applications, with excellent light emission properties, significantly improved stability, and tunable light emission properties demonstrated by A(2)AgX(3).
ADVANCED FUNCTIONAL MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Zuzhang Lin, Yapeng Cai, Yaowei Zhang, Hong Zhang, Haiping Xia
Summary: We report a new candidate for heterocyclic Suzuki-Miyaura coupling reaction, which is used in organometallic systems by combining classical aryl boronic acid reagents with non-classical heteroarenes. Experimental and computational studies of the mechanism of the reactions were performed, focusing on the identity of the reactive species in the oxidative addition step and the nature of the precise site selectivity. The influence of both the aromaticity of the metalla-aromatic substrates and the steric and electronic properties of the halogenated sites are studied in detail.
Article
Chemistry, Physical
Christopher L. Rom, M. Jewels Fallon, Allison Wustrow, Amy L. Prieto, James R. Neilson
Summary: This study reports the synthesis of bulk powders of MgZrN2 and MgxZr2-xN2 (0 < x < 1) through a metathesis route, showing that lower temperature reactions lead to the formation of these ternary phases instead of exclusively ZrN. Thermochemical calculations suggest that controlling the ratio of metathesis precursors can vary the composition of MgxZr2-xN2, resulting in a gradual metal-to-insulator transition with increasing x. Furthermore, optical behavior indicates nanoscale compositional inhomogeneity in the powders, even in Mg-rich samples.
CHEMISTRY OF MATERIALS
(2021)
Article
Chemistry, Organic
Sen Yang, Hao Hu, Ming Chen
Summary: A highly efficient visible-light-induced elimination method for alkyl halides is presented, which selectively yields unactivated terminal olefins vital in organic synthesis.
Article
Chemistry, Organic
Sen Yang, Hao Hu, Ming Chen
Summary: A highly efficient method for visible-light-induced regio- and chemoselective elimination of alkyl halides yielding unactivated terminal olefins vital in organic synthesis is presented. The reaction, achieved through ligand control, exhibits remarkable regioselectivity and suppresses undesired side reactions, particularly 1,5-hydrogen atom transfer (HAT). This method favors primary alkyl halides while preserving secondary and tertiary alkyl bromides, thereby enabling the incorporation of terminal olefins in complex molecules for late-stage functionalization.
Editorial Material
Biochemistry & Molecular Biology
Maria J. S. A. Silva, Pedro M. P. Gois, Gilles Gasser
Summary: The lack of selectivity of metal-based anticancer drugs for cancer cells has hindered their development. However, a recent study has shown successful intracellular activation of organogold(I) complexes through Pd(II)-mediated transmetallation, offering a promising strategy for more advanced and selective cancer treatments. This approach could pave the way for future studies in medicinal inorganic chemistry.
Article
Chemistry, Multidisciplinary
Alasdair K. Cooper, Megan E. Greaves, William Donohoe, Paul M. Burton, Thomas O. Ronson, Alan R. Kennedy, David J. Nelson
Summary: A nickel/dppf catalyst system successfully achieved Suzuki-Miyaura cross-coupling reactions of certain chloropyridines and chloroquinolines but not others, due to differences in the reaction mechanism. Chloropyridines rapidly undergo oxidative addition to the catalyst, while alpha-halo-N-heterocycles form catalytically inactive dimeric nickel species.
Article
Chemistry, Physical
Seongwook Park, Seunghwan Byun, Huijeoung Ryu, Hyungwoo Hahm, Junseong Lee, Sukwon Hong
Summary: Novel ruthenium catalysts bearing azobenzene groups were developed for olefin metathesis reactions, demonstrating an on-off switching ability in ring-closing metathesis reactions depending on UV irradiation. Various types of olefin metathesis reactions, such as ring-opening metathesis, cross-metathesis, and ethenolysis, exhibited photoswitching phenomena. The reversible feature of photoswitching was confirmed by observing the photoisomerization of azobenzene-bearing cyclic(alkyl)(amino)carbene ligands and the corresponding ruthenium catalysts using UV-vis spectroscopy.
