bluuebunny/crossref_metadata_2025_split huggingface dataset:
Extraction of (9,8) Single‐Walled Carbon Nanotubes by Fluorene‐Based Polymers
Authors: Si Rongmei , Wei Li , Wang Hong , Su Dingdian , Mushrif Samir H. , Chen Yuan 
Published: December 2013

AbstractSelective polymer wrapping is a promising approach to obtain high‐chiral‐purity single‐walled carbon nanotubes (SWCNTs) needed in technical applications and scientific studies. We showed that among three fluorene‐based polymers with different side‐chain lengths and backbones, poly[(9,9‐dihexylfluorenyl‐2,7‐diyl)‐co‐(9,10‐anthracene)] (PFH‐A) can selectively extract SWCNTs synthesized from the CoSO4/SiO2 catalyst, which results in enrichment of 78.3 % (9,8) and 12.2 % (9,7) nanotubes among all semiconducting species. These high‐chiral‐purity SWCNTs may find potential applications in electronics, optoelectronics, and photovoltaics. Furthermore, molecular dynamics simulations suggest that the extraction selectivity of PFH‐A relates to the bending and alignment of its alkyl chains and the twisting of its two aromatic backbone units (biphenyl and anthracene) relative to SWCNTs. The strong π–π interaction between polymers and SWCNTs would increase the extraction yield, but it is not beneficial for chiral selectivity. Our findings suggest that the matching between the curvature of SWCNTs and the flexibility of the polymer side chains and the aromatic backbone units is essential in designing novel polymers for selective extraction of (n,m) species.
Almost Asymptotic Regulation of Markovian Jumping Linear Systems in Discrete Time
Authors: He Shu‐ping , Ding Zheng‐tao , Liu Fei 
Published: December 2013

AbstractThis paper considers the problems of almost asymptotic output regulation for discrete‐time Markovian jumping linear systems. Based on a stochastic Lyapunov‐Krasovskii functional framework, sufficient conditions for the extension of the regulation scheme to such stochastic systems are obtained via state feedback and via error feedback. Relying on a characterization of the feedback controllers, the almost asymptotic regulation is accomplished. The problem of guaranteeing stochastic stability and almost asymptotic tracking is achieved by solving linear matrix inequalities subject to a set of linear equality constraints. In order to ensure relaxed solutions of the regulation equations, a semi‐definite optimization approach via disciplined convex programming is outlined. Simulation results also are given to illustrate the effectiveness of the proposed design approach.
Ligand entry into the calyx of β‐lactoglobulin
Authors: Bello Martiniano , García‐Hernández Enrique 
Published: December 2013

ABSTRACTAlthough the thermodynamic principles that control the binding of drug molecules to their protein targets are well understood, the detailed process of how a ligand reaches a protein binding site has been an intriguing question over decades. The short time interval between the encounter between a ligand and its receptor to the formation of the stable complex has prevented experimental observations. Bovine β‐lactoglobulin (βlg) is a lipocalin member that carries fatty acids (FAs) and other lipids in the cellular environment. Βlg accommodates a FA molecule in its highly hydrophobic cavity and exhibits the capability of recognizing a wide variety of hydrophobic ligands. To elucidate the ligand entry process on βlg, we report molecular dynamics simulations of the encounter between palmitate (PA) or laurate (LA) and βlg. Our results show that residues localized in loops at the cavity entrance play an important role in the ligand penetration process. Analysis of the short‐term interaction energies show that the forces operating on the systems lead to average conformations very close to the crystallographic holo‐forms. Whereas the binding free energy analysis using the molecular mechanics Generalized Born surface area method shows that these conformations were thermodynamically favorable. © 2013 Wiley Periodicals, Inc. Biopolymers 101: 744–757, 2014.
A sensitive LC‐MS/MS method for simultaneous determination of R‐bambuterol and its active metabolite R‐terbutaline in human plasma and urine with application to a clinical pharmacokinetic study
Authors: Zhou Ting , Zhao Ting , Cheng Qing , Liu Shan , Xu Ling , Tan Wen 
Published: December 2013

ABSTRACTA sensitive liquid chromatography–tandem mass spectrometry (LC‐MS/MS) method for simultaneous determination of R‐bambuterol and its active metabolite R‐terbutaline in human plasma and urine was established. The inhibition for the biotransformation of R‐bambuterol in plasma was fully investigated. Plasma samples were prepared on ice and neostigmine metilsulfate added as a cholinesterase inhibitor immediately after sample collection. All samples were extracted with ethyl acetate and separated on a C18 column under gradient elution with a mobile phase consisting of methanol and water containing 5 mm ammonium acetate at a flow rate of 0.6 mL/min. The analytes were detected by an API 4000 tandem mass spectrometer with positive electrospray ionization in multiple reaction monitoring mode. The established method was highly sensitive with the lower limit of quantification (LLOQ) of 10.00 pg/mL for each analyte in plasma. In urine samples, the LLOQs were 20.00 and 500.0 pg/mL for R‐bambuterol and R‐terbutaline, respectively. The intra‐ and inter‐day precisions were <12.7 and <8.6% for plasma and urine, respectively. The analytical runtime within 6.0 min per sample made this method suitable for high‐throughput determination. The validated method has been successfully applied to the human pharmacokinetic study of R‐bambuterol involving 10 healthy volunteers. Copyright © 2013 John Wiley & Sons, Ltd.
CGTase‐Catalysed cis‐Glucosylation of L‐Rhamnosides for the Preparation of Shigella flexneri 2a and 3a Haptens
Authors: Urbach Carole , Halila Sami , Guerreiro Catherine , Driguez Hugues , Mulard Laurence A. , Armand Sylvie 
Published: December 2013

AbstractWe report the enzymatic synthesis of α‐D‐glucopyranosyl‐(1→4)‐α‐L‐rhamnopyranoside and α‐D‐glucopyranosyl‐(1→3)‐α‐L‐rhamnopyranoside by using a wild‐type transglucosidase in combination with glucoamylase and glucose oxidase. It was shown that Bacillus circulans 251 cyclodextrin glucanotransferase (CGTase, EC 2.1.4.19) can efficiently couple an α‐L‐rhamnosyl acceptor to a maltodextrin molecule with an α‐(1→4) linkage, albeit in mixture with the α‐(1→3) regioisomer, thus giving two glucosylated acceptors in a single reaction. Optimisation of the CGTase coupling reaction with β‐cyclodextrin as the donor substrate and methyl or allyl α‐L‐rhamnopyranoside as acceptors resulted in good conversion yields (42–70 %) with adjustable glycosylation regioselectivity. Moreover, the efficient chemical conversion of the products of CGTase‐mediated cis‐glucosylation into protected building blocks (previously used in the synthesis of O‐antigen fragments of several Shigella flexneri serotypes) was substantiated. These novel chemoenzymatic strategies towards useful, convenient intermediates in the synthesis of S. flexneri serotypes 2a and 3a oligosaccharides might find applications in developments towards synthetic carbohydrate‐based vaccine candidates against bacillary dysentery.
A General Method for Artificial Metalloenzyme Formation through Strain‐Promoted Azide–Alkyne Cycloaddition
Authors: Yang Hao , Srivastava Poonam , Zhang Chen , Lewis Jared C. 
Published: December 2013

AbstractStrain‐promoted azide–alkyne cycloaddition (SPAAC) can be used to generate artificial metalloenzymes (ArMs) from scaffold proteins containing a p‐azido‐L‐phenylalanine (Az) residue and catalytically active bicyclononyne‐substituted metal complexes. The high efficiency of this reaction allows rapid ArM formation when using Az residues within the scaffold protein in the presence of cysteine residues or various reactive components of cellular lysate. In general, cofactor‐based ArM formation allows the use of any desired metal complex to build unique inorganic protein materials. SPAAC covalent linkage further decouples the native function of the scaffold from the installation process because it is not affected by native amino acid residues; as long as an Az residue can be incorporated, an ArM can be generated. We have demonstrated the scope of this method with respect to both the scaffold and cofactor components and established that the dirhodium ArMs generated can catalyze the decomposition of diazo compounds and both SiH and olefin insertion reactions involving these carbene precursors.
Aqueous Oxidative Heck Reaction as a Protein‐Labeling Strategy
Authors: Ourailidou Maria Eleni , van der Meer Jan‐Ytzen , Baas Bert‐Jan , Jeronimus‐Stratingh Margot , Gottumukkala Aditya L. , Poelarends Gerrit J. , Minnaard Adriaan J. , Dekker Frank J. 
Published: December 2013

AbstractAn increasing number of chemical reactions are being employed for bio‐orthogonal ligation of detection labels to protein‐bound functional groups. Several of these strategies, however, are limited in their application to pure proteins and are ineffective in complex biological samples such as cell lysates. Here we present the palladium‐catalyzed oxidative Heck reaction as a new and robust bio‐orthogonal strategy for linking functionalized arylboronic acids to protein‐bound alkenes in high yields and with excellent chemoselectivity even in the presence of complex protein mixtures from living cells. Advantageously, this reaction proceeds under aerobic conditions, whereas most other metal‐catalyzed reactions require inert atmosphere.
Redox‐Based Resistive Switching Memories (ReRAMs): Electrochemical Systems at the Atomic Scale
Authors: Valov Ilia 
Published: December 2013

AbstractResistive switching memories (RRAMs) are an emerging research field, which is currently of focused interest for both the interdisciplinary scientific community and industry. RRAMs are nano‐electrochemical systems with great potential as a disruptive technology for the semiconductor industry as well as for a number of applications such as memory, logic and analog circuits, memristive operations, neuromorphic applications and computing. The present review aims to present the current state‐of‐the‐art knowledge on redox‐based resistive switching RRAMs, highlighting the role of the interfaces, discussing the electrochemical kinetics during formation of nanofilaments, and to relate them to the more fundamental issue of microscopic description of electrochemical processes at the atomic scale.
The Relationship between DNA Sequences and Oligonucleotide‐Templated Silver Nanoclusters and Their Fluorescence Properties
Authors: Teng Ye , Yang Xuan , Han Lei , Wang Erkang 
Published: December 2013

AbstractA novel approach was developed to study the relationship between DNA sequences and DNA‐templated silver nanoclusters (DNA‐Ag NCs) in detail by using an ordinary DNA strand as an example. Three kinds of Ag NCs are formed by using the DNA strand as a scaffold. By dividing the DNA template into several parts according to their different affinities to Ag+, it was found that the fluorescence properties of DNA‐Ag NCs are related to not only the sequences but also to the position of different parts in the template, which provides a more efficient approach to obtain DNA‐Ag NCs with required photoluminescence properties and may ultimately contribute to the targeted synthesis of DNA‐Ag NCs.
Enhancing CO2 Separation Ability of a Metal–Organic Framework by Post‐Synthetic Ligand Exchange with Flexible Aliphatic Carboxylates
Authors: Hong Dae Ho , Suh Myunghyun Paik 
Published: December 2013

AbstractA series of porous metal–organic frameworks having flexible carboxylic acid pendants in their pores (UiO‐66‐ADn: n=4, 6, 8, and 10, where n denotes the number of carbons in a pendant) has been synthesized by post‐synthetic ligand exchange of terephthalate in UiO‐66 with a series of alkanedioic acids (HO2C(CH2)n−2CO2H). NMR, IR, PXRD, TEM, and mass spectral data have suggested that a terephthalate linker in UiO‐66 was substituted by two alkanedioate moieties, resulting in free carboxyl pendants in the pores. When post‐synthetically modified UiO‐66 was partially digested by adjusting the amount of added HF/sample, NMR spectra indicated that the ratio of alkanedioic acid/terephthalic acid was increased with smaller amounts of acid, implying that the ligand substitution proceeded from the outer layer of the particles. Gas sorption studies indicated that the surface areas and the pore volumes of all UiO‐66‐ADns were decreased compared to those of UiO‐66, and that the CO2 adsorption capacities of UiO‐66‐ADn (n=4, 8) were similar to that of UiO‐66. In the case of UiO‐66‐AD6, the CO2 uptake capacity was 34 % higher at 298 K and 58 % higher at 323 K compared to those of UiO‐66. It was elucidated by thermodynamic calculations that the introduction of flexible carboxyl pendants of appropriate length has two effects: 1) it increases the interaction enthalpy between the host framework and CO2 molecules, and 2) it mitigates the entropy loss upon CO2 adsorption due to the formation of multiple configurations for the interactions between carboxyl groups and CO2 molecules. The ideal adsorption solution theory (IAST) selectivity for CO2 adsorption over that of CH4 was enhanced for all of the UiO‐66‐ADns compared to that of UiO‐66 at 298 K. In particular, UiO‐66‐AD6 showed the most strongly enhanced CO2 uptake capacity and significantly increased selectivity for CO2 adsorption over that of CH4 at ambient temperature, suggesting that it is a promising material for sequestering CO2 from landfill gas.
Highly Selective and Responsive Visible to Near‐IR Ytterbium Emissive Probe for Monitoring Mercury(II)
Authors: Zhang Tao , Chan Chi‐Fai , Lan Rongfeng , Wong Wai‐Kwok , Wong Ka‐Leung 
Published: December 2013

AbstractA new lanthanide probe based on the fluorescence resonance energy transfer (FRET) process with the combination of ytterbium porphyrinate complex and a rhodamine B derivative unit was synthesized to detect the Hg2+ ion with responsive emission in the visible and near‐IR region with a detection limit of 10 μM
Pd–Carbene Migratory Insertion: Application to the Synthesis of Trifluoromethylated Alkenes and Dienes
Authors: Wang Xi , Xu Yan , Deng Yifan , Zhou Yujing , Feng Jiajie , Ji Guojing , Zhang Yan , Wang Jianbo 
Published: December 2013

AbstractPd‐catalyzed cross‐coupling of halides with CF3‐substituted diazo compounds or N‐tosylhydrazones has been explored for the synthesis of CF3‐substituted alkenes and 1,3‐butadienes. Pd–carbene migratory insertion plays the key role in these transformations.
Ionic Liquids Supported on Metal‐Organic Frameworks: Remarkable Adsorbents for Adsorptive Desulfurization
Authors: Khan Nazmul Abedin , Hasan Zubair , Jhung Sung Hwa 
Published: December 2013

AbstractAcidic ionic‐liquids (IL) supported on metal–organic frameworks (MOFs) have been shown to be beneficial for adsorptive desulfurization. A remarkable improvement in the adsorption capacity (ca. 71%) was observed in for ILs supported on MIL‐101 compared with virgin MIL‐101. The improved adsorptive performance might be explained by the acid–base interactions between the acidic ionic liquid and basic benzothiophene (BT). Moreover, from this study, it can be suggested that porous MOFs, supported with ionic liquids, may introduce a new class of highly porous adsorbents for the efficient adsorption of various compounds.
ChemInform Abstract: The Monoclinic Form of Trilithium Dichromium(III) Tris(orthophosphate).
Authors: Sun Joobin , Kim Pilsoo , Yun Hoseop 
Published: December 2013

AbstractMonoclinic Li3Cr2(PO4)3 is prepared by melting equimolar amounts of Cr and P in a reactive LiCl/CsCl (4:1) flux (reactant/flux ratio of 1:3, evacuated silica tube, 1123 K, 2 d, 4 K/h cooling rate).
ChemInform Abstract: Cyclopentasilane Si5H10: First Single Crystal X‐Ray Structure of an Oligosilane SixHy and Thermal Analysis with TG/MS.
Authors: Schmidt Dana , Boehme Uwe , Seidel Juergen , Kroke Edwin 
Published: December 2013

AbstractCyclopentasilane Si5H10 single crystals are grown in situ from liquid Si5H10 (repeated melting and freezing between 263 and 153 K) allowing the XRD structure determination at 173 K.
ChemInform Abstract: Structure and Chemical Bonding of ScNiB4.
Authors: Eickerling Georg , Scherer Wolfgang , Fickenscher Thomas , Rodewald Ute Ch. , Poettgen Rainer 
Published: December 2013

AbstractScNiB4 is prepared by arc melting of stoichiometric mixtures of the elements followed by annealing slightly below the melting point for the growth of single crystals.
ChemInform Abstract: Synthesis and Structural and Magnetic Characterization of the Frustrated Magnetic System La2Ni4/3‐xCoxSb2/3O6.
Authors: Franco D. G. , Carbonio R. E. , Nieva G. 
Published: December 2013

AbstractThe title double perovskites (x = 0, 1/3, 2/3, 1) are prepared by solid state reactions of stoichiometric mixtures of La2O3, NiO, Co3O4, and Sb2O3 (950 and 1400 °C, 12 h each).
ChemInform Abstract: Local Environments of Dilute Activator Ions in the Solid‐State Lighting Phosphor Y3‐xCexAl5O12.
Authors: George Nathan C. , Pell Andrew J. , Dantelle Geraldine , Page Katharine , Llobet Anna , Balasubramanian M. , Pintacuda Guido , Chmelka Bradley F. , Seshadri Ram 
Published: December 2013

AbstractCe‐doped yttrium aluminum garnet (Ce:YAG), CexY3‐xAl5O12 with x = 0—0.09, is prepared by solid state synthesis using stoichiometric amounts of Y2O3, Al2O3, and CeO2 plus an optimum of 5 wt% each of BaF2 and NH4F as sintering aids (alumina crucible, 1500 °C, 5 h, 5% H2/N2 atmosphere).
ChemInform Abstract: On the Control Parameters of the Quasi‐One Dimensional Superconductivity in Sc3CoC4.
Authors: Eickerling Georg , et al. et al. 
Published: December 2013

AbstractA detailed analysis of structural, electronic, and vibrational properties of the low‐temperature phase of Sc3CoC4, which is one of a few well‐documented quasi one‐dimensional superconductors, is presented.
ChemInform Abstract: CoxCu1‐xCr2S4 Nanocrystals: Synthesis, Magnetism, and Band Structure Calculations.
Authors: Ramasamy Karthik , Sims Hunter , Gupta Ram K. , Kumar Dhananjay , Butler William H. , Gupta Arunava 
Published: December 2013

AbstractNanocrystals of CoxCu1‐xCr2S4 are prepared over the entire composition range by reaction of appropriate amounts of CuCl2, CoCl2, and CrCl3 in the presence of octadecylamine (360 °C, N2 atmosphere) followed by injection of 1‐dodecanethiol and further heating for 1 h.
ChemInform Abstract: Divalent Iron Nitridophosphates: A New Class of Cathode Materials for Li‐Ion Batteries.
Authors: Liu Jue , Yu Xiqian , Hu Enyuan , Nam Kyung‐Wan , Yang Xiao‐Qing , Khalifah Peter G. 
Published: December 2013

AbstractNa2Fe2P3O9N is prepared by reaction of NaPO3, Fe2O3, and (NH4)2HPO4 in a NH3 stream (quartz boat, 625 °C, 40 h).
ChemInform Abstract: Cobalt Molybdenum Oxynitrides: Synthesis, Structural Characterization, and Catalytic Activity for the Oxygen Reduction Reaction.
Authors: Cao Bingfei , Veith Gabriel M. , Diaz Rosa E. , Liu Jue , Stach Eric A. , Adzic Radoslav R. , Khalifah Peter G. 
Published: December 2013

AbstractCarbon supported cobalt molybdenum oxynitrides, CoxMo1‐xOyNz/C (x = 0.25, 0.50, 0.75) are prepared from aqueous solutions of Co(NO3)2, (NH4)6Mo7O24, and carbon black followed by ammonolysis of the obtained powders at 773—973 K for 3 h.
ChemInform Abstract: Synthesis of Large Single Crystals and Thermoelectrical Properties of the Type‐I Clathrate K8Zn4Sn42.
Authors: Baran Volodymyr , Fischer Andreas , Scherer Wolfgang , Faessler Thomas F. 
Published: December 2013

AbstractLarge single crystals of K8Zn4Sn42 with a length of up to 6 mm are prepared from a mixture of the elements using excess Sn as a flux (Ta ampule, 650 °C, 1 h).
ChemInform Abstract: A New Polyanion with Dawson‐Like Constitution: [H2SeW18O60]6‐.
Authors: Wang Lijuan , Li Wenjuan , Wu Lizhou , Dong Xinbo , Hu Huaiming , Xue Ganglin 
Published: December 2013

AbstractThe tungstoselenite (Et2NH2)6 [H2SeW18O60] is prepared by reaction of Na2WO4, Na2SeO3, and Et2NH2Cl in the presence of KCl and Fe(NO3)3 under acidic conditions (H2O, pH 1.7 adjusted with HCl, 25 °C, 5 min; 18% yield).
ChemInform Abstract: The Flexible Ba7UM2S12.5O0.5 (M: V, Fe) Compounds: Syntheses, Structures and Spectroscopic, Resistivity, and Electronic Properties.
Authors: Mesbah Adel , Stojko Wojciech , Malliakas Christos D. , Lebegue Sebastien , Clavier Nicolas , Ibers James A. 
Published: December 2013

AbstractThe new compounds Ba7UV2S12.5O0.5 (I) and Ba7UFe2S12.5O0.5 (II) are prepared by solid state reaction of BaS, V or Fe, U, and S (evacuated carbon‐coated silica tubes, 1223 K, 8 d, 50 and 90 wt.% yield, resp.).
ChemInform Abstract: Enantio‐ and Regioselective Conjugate Addition of Organometallic Reagents to Linear Polyconjugated Nitroolefins.
Authors: Tissot Matthieu , Alexakis Alexandre 
Published: December 2013

AbstractThe copper‐catalyzed addition of trialkylaluminum reagents to polyconjugated olefins using a ferrocene‐based phosphine ligand affords selectively 1,4‐addition products with high enantioselectivity.
ChemInform Abstract: Iron‐Catalyzed Asymmetric Haloamination Reactions.
Authors: Cai Yunfei , Liu Xiaohua , Zhou Pengfei , Kuang Yulong , Lin Lili , Feng Xiaoming 
Published: December 2013

AbstractAn asymmetric chloroamination of 3‐alkylidene‐ and 3‐arylidene‐indolin‐2‐ones (I) is developed affording the corresponding chiral oxindole derivatives (III) bearing vicinal anti‐chloroamine substituents.
ChemInform Abstract: Amphiphilic Methyleneamino Synthon Through Organic Dye Catalyzed‐Decarboxylative Aminoalkylation.
Authors: Chen Li , Chao Chin Sheng , Pan Yuanhang , Dong Sheng , Teo Yew Chin , Wang Jian , Tan Choon‐Hong 
Published: December 2013

AbstractN‐Aryl amino acids (I) are used as precursors for photo‐induced synthons, which are coupled with a radical or a nucleophile to afford a variety of natural product‐like compounds.
ChemInform Abstract: A Palladacyclic Azobenzene Derivative as a Catalyst for Carbon—Carbon Bond Formation Reactions.
Authors: Bulygina L. A. , Khrushcheva N. S. , Peregudova S. M. , Sokolov V. I. 
Published: December 2013

AbstractThe bis‐chelated palladacycle is moderately active as catalyst for Suzuki and Heck reactions.
ChemInform Abstract: A Waste‐Minimized Protocol for the Preparation of 1,2‐Azido Alcohols and 1,2‐Amino Alcohols
Authors: Ballerini Eleonora , Crotti Paolo , Frau Ileana , Lanari Daniela , Pizzo Ferdinando , Vaccaro Luigi 
Published: December 2013

Abstractvia azidolysis of epoxides under solvent‐free conditions in the presence of a polystyrene‐supported bisfluoride DABCO catalyst
ChemInform Abstract: C‐5′‐Substituted Cinchona Alkaloid Derivatives Catalyse the First Highly Enantioselective Dynamic Kinetic Resolutions of Azlactones by Thiolysis.
Authors: Palacio Carole , Connon Stephen J. 
Published: December 2013

AbstractSeveral cinchona‐derived catalysts are prepared and tested for this reaction.
ChemInform Abstract: Ligand‐Controlled Palladium‐Catalyzed Regiodivergent Suzuki—Miyaura Cross‐Coupling of Allylboronates and Aryl Halides.
Authors: Yang Yang , Buchwald Stephen L. 
Published: December 2013

AbstractAn orthogonal set of catalyst systems for the Suzuki—Miyaura coupling of 3,3‐disubstituted and 3‐monosubstituted allylboronates with aryl halides is developed.
ChemInform Abstract: Catalytic MBH Reaction of β‐Substituted Nitroalkenes with Azodicarboxylates.
Authors: Chen Xiang‐Yu , Xia Fei , Ye Song 
Published: December 2013

AbstractThe Morita—Baylis—Hillman reaction of nitroalkenes with azo‐dicarboxylates is optimized requiring only low loadings of a NHC‐precatalyst as promotor.
ChemInform Abstract: Asymmetric Catalysis with an Inert Chiral‐at‐Metal Iridium Complex.
Authors: Chen Liang‐An , Xu Weici , Huang Biao , Ma Jiajia , Wang Lun , Xi Jianwei , Harms Klaus , Gong Lei , Meggers Eric 
Published: December 2013

AbstractNovel chiral iridium complexes are synthesized and used as a catalyst for the asymmetric hydrogenation reaction of β,β‐disubstituted nitroolefins.