Review
Chemistry, Organic
Pinaki Nad, Arup Mukherjee
Summary: Acceptorless dehydrogenative coupling reactions using manganese catalyst is a promising and sustainable method for constructing carbon-carbon and carbon-heteroatom bonds. The methodology is highly atom economical, producing water and hydrogen as byproducts, and provides a unique opportunity for constructing various synthons and biologically important motifs. Recent progress in this field has been made with manganese catalysis based on pincer ligands for various homogeneous transformations.
ASIAN JOURNAL OF ORGANIC CHEMISTRY
(2021)
Review
Chemistry, Physical
Vinita Yadav, Ganesan Sivakumar, Virendrakumar Gupta, Ekambaram Balaraman
Summary: The use of hydrogen diversifies energy sources by significantly reducing greenhouse gas emissions and environmental pollution during energy conversion, but hydrogen storage remains a challenge. Liquid organic hydrogen carrier (LOHC) systems have gained importance as an alternative to traditional storage methods, utilizing alcohols for catalytic dehydrogenation-hydrogenation processes to develop economical, safe, and easily handled hydrogen storage systems.
Article
Engineering, Chemical
Yan Xu, Lu Wang, Junwei Wu, Guanzhong Zhai, Daohua Sun
Summary: Acceptorless alcohol dehydrogenation is a promising strategy in hydrogen storage technologies. Cost-effective molecular catalysts using phosphine-free ligands have gained attention, but the challenge is to overcome the one-electron pathway of non-precious metals.
FRONTIERS OF CHEMICAL SCIENCE AND ENGINEERING
(2023)
Review
Chemistry, Inorganic & Nuclear
Monica Trincado, Jonas Bosken, Hansjorg Grutzmacher
Summary: This paper reviews recent advances in homogeneously catalyzed acceptorless alcohol dehydrogenation, highlighting the importance of metal-ligand cooperativity in catalyzing the reaction and the potential positive impact of introducing multifunctional cooperative ligands.
COORDINATION CHEMISTRY REVIEWS
(2021)
Article
Chemistry, Inorganic & Nuclear
Ze-Wen Chen, Fan Ma, Yue Liu, Xiu-Fang Mo, Guo Chen, Xiao Peng, Xiao-Yi Yi
Summary: Different Ru complexes 1 and 2 synthesized under different conditions exhibit distinct properties, with complex 2 being thermodynamically more stable. The catalytic effects of these two complexes on the acceptorless dehydrogenation of alcohols to carboxylic acids were studied.
INORGANICA CHIMICA ACTA
(2022)
Article
Chemistry, Physical
Lijun Lu, Jie Luo, David Milstein
Summary: Sulfones are important in organic synthesis and pharmaceutical chemistry. Direct alpha-alkylation of sulfones with alcohols as the reaction partners offers a promising method for their structural modification. This study reports the successful alpha-alkylation of sulfones using alcohols catalyzed by an earth-abundant manganese complex. The reaction selectivity was greatly improved by the catalyst and the amount of base used. Aromatic and aliphatic alcohols were suitable reagents for the alpha-alkylation of sulfones at low metal catalyst loading, demonstrating the practicality of the developed system.
Article
Chemistry, Multidisciplinary
Parul Saini, Pritam Dolui, Abhishek Nair, Ashutosh Verma, Anil J. Elias
Summary: We report a new air-stable phosphine-free 8-AQ based Mn(I) carbonyl complex as an effective catalyst for the C(alpha)-alkylation of oxindoles with alcohols. The procedure has been successfully used for the synthesis of pharmaceutically important oxindoles, which have shown potential in preventing specific types of cell death in neurodegenerative disorders. Control experiments have revealed the crucial role of metal-ligand cooperation via the -NH2 moiety during catalysis.
CHEMISTRY-AN ASIAN JOURNAL
(2023)
Article
Chemistry, Multidisciplinary
Lin Min, Jiani Lin, Wei Shu
Summary: A photocatalytic acceptorless hydrogen-evolution aromatization method has been developed for the direct construction of phenols from cyclohexanones or cyclohexenones under mild conditions. This operationally simple method enables the synthesis of diverse substituted phenols from simple starting materials.
CHINESE JOURNAL OF CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Jiaqi Wang, Xinyu Liu, Zhaohui Li
Summary: This study demonstrates acceptorless photocatalytic dehydrogenation using Ti3C2Tx/CdS nanocomposites to convert furfuryl alcohol to furfural and furoic acid, while generating hydrogen. Ti3C2Tx acts as an efficient cocatalyst for CdS, achieving optimal performance in the dehydrogenation reaction. The research provides an economic and sustainable strategy for valorization of biomass-derived compounds and clean energy production.
CHEMISTRY-AN ASIAN JOURNAL
(2021)
Article
Chemistry, Multidisciplinary
Krishanu Bera, Arup Mukherjee
Summary: A sustainable and easy-to-use protocol for alkylation of aryl nitriles using manganese(I) catalyst is presented. The reaction utilizes readily available nitriles and abundant alcohols, yielding alpha-branched nitriles and water as the sole byproduct.
CHEMISTRY-AN ASIAN JOURNAL
(2023)
Article
Nanoscience & Nanotechnology
Krisangi Bordoloi, Gauravjyoti D. Kalita, Pankaj Das
Summary: In this study, a nanostructured iridium catalyst supported on NiO (IrNP@NiO) was introduced for acceptorless dehydrogenative oxidation of primary alcohols. The catalyst was synthesized using a simple wet chemical technique and characterized by various analyses. The catalyst showed high selectivity in converting primary alcohols to acids or carboxylates under the presence of a base, and aldehydes were obtained under base-free conditions. The catalyst also demonstrated efficient conversion of biomass-based alcohols, and could be easily separated and reused multiple times.
ACS APPLIED NANO MATERIALS
(2023)
Article
Chemistry, Organic
James M. M. Stubbs, Amrit S. S. Nanuwa, Matthew D. D. Hoffman, Johanna M. M. Blacquiere
Summary: A group of 13 catalysts with cooperative or noncooperative bidentate phosphine ligands were evaluated for the acceptorless dehydrogenation of indoline. The optimal cooperative catalyst structure included a Cp ancillary ligand and a N,N-disubstituted P,P-disubstituted 1,5-diaza-3,7-diphosphacyclooctane ligand. The cooperative catalyst effectively dehydrogenated a range of indoline substrates to give substituted indoles.
Article
Chemistry, Physical
Kaikai Qiao, Guoquan Liu, Xinpeng Xie, Yunfei Liu, Wenfeng Jiang, Fei Li, Lei Shi
Summary: This paper describes an acceptorless dehydrogenation process of N-heterocycles using a photoelectrochemical method under simulated sunlight irradiation at room temperature. Various N-heterocyclic compounds were effectively dehydrogenated into the corresponding products with high yields (up to 97%), accompanied by simultaneous hydrogen evolution in a PEC cell comprising a mesoporous BiVO4 photoanode and Pt electrode.
Review
Chemistry, Inorganic & Nuclear
Praveen K. Verma
Summary: This article presents an overview of the opportunities and challenges in photocatalytic acceptorless dehydrogenation (PAD) reactions. The introduction of light and utilization of a photocatalyst provide sustainable approaches for these reactions. PAD reactions have been successfully applied to various substrates, opening up new possibilities for future developments.
COORDINATION CHEMISTRY REVIEWS
(2022)
Article
Chemistry, Multidisciplinary
Febi Yusniyanti, Takayoshi Hara, Kohei Makishima, Enggah Kurniawan, Takuya Fujimura, Ryo Sasai, Chikako Moriyoshi, Shogo Kawaguchi, Yessi Permana, Nobuyuki Ichikuni
Summary: A highly dispersed carbonate-intercalated Cu2+-Al3+ layered double hydroxide (CuAl LDH) was created on an unreactive alpha-Al2O3 surface. After calcination, highly reducible CuO nanoparticles and CuAl2O4 were formed. The catalyst showed high activity for the acceptorless dehydrogenation of various alcohols.
CHEMISTRY-AN ASIAN JOURNAL
(2023)
Article
Chemistry, Physical
Vinita Yadav, Vinod G. Landge, Murugan Subaramanian, Ekambaram Balaraman
Review
Chemistry, Physical
Vinita Yadav, Ganesan Sivakumar, Virendrakumar Gupta, Ekambaram Balaraman
Summary: The use of hydrogen diversifies energy sources by significantly reducing greenhouse gas emissions and environmental pollution during energy conversion, but hydrogen storage remains a challenge. Liquid organic hydrogen carrier (LOHC) systems have gained importance as an alternative to traditional storage methods, utilizing alcohols for catalytic dehydrogenation-hydrogenation processes to develop economical, safe, and easily handled hydrogen storage systems.
Article
Chemistry, Multidisciplinary
Vinod G. Landge, Vinita Yadav, Murugan Subaramanian, Pragya Dangarh, Ekambaram Balaraman
CHEMICAL COMMUNICATIONS
(2019)
