1
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Toksha B, Gupta P, Rahaman M. Hydrogen Sensing with Palladium-Based Materials: Mechanisms, Challenges, and Opportunities. Chem Asian J 2024:e202400127. [PMID: 38715432 DOI: 10.1002/asia.202400127] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2024] [Revised: 04/22/2024] [Indexed: 06/12/2024]
Abstract
Palladium morphologies are prominently used in Hydrogen gas sensing applications owing to their unique characteristics and properties. In this review article, Palladium nanoparticles, thin films, and alloys were designated as the scope of Palladium morphologies. The aim of this review article is to explore Hydrogen sensing using Palladium, focusing on the recent advancements in the field.. The principles underlying Hydrogen sensing mechanisms with Palladium are discussed initially, highlighting the unique properties of Palladium that make it a promising material for this purpose. Special attention is given to the surface interactions and structural modifications that influence the sensitivity and selectivity of Palladium-based sensors The study also addresses key challenges and recent innovations in the field which contribute to the enhancement of Palladium-based Hydrogen sensing capabilities. The current state of research is critically examined to identify gaps in knowledge and future research directions are highlighted. The prospects and challenges associated with the use of Palladium for Hydrogen sensing, emphasizing its pivotal role in advancing sensor technologies for Hydrogen detection are also discussed.
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Affiliation(s)
- Bhagwan Toksha
- Faculty of Physics, Maharashtra Institute of Technology, Aurangabad, 431010, India
| | - Prashant Gupta
- Department of Plastic and Polymer Engineering, School of Engineering, Plastindia International University, Vapi, 3961935, India
| | - Mostafizur Rahaman
- Department of Chemistry, College of Science, King Saud University, Riyadh, 11451, Saudi Arabia
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2
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Ramesh Naidu V, Rafi AA, Tai CW, Bäckvall JE, Córdova A. Regio- and Stereoselective Carbon-Boron Bond Formation via Heterogeneous Palladium-Catalyzed Hydroboration of Enallenes. Chemistry 2023; 29:e202203950. [PMID: 36719323 DOI: 10.1002/chem.202203950] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2022] [Revised: 01/30/2023] [Accepted: 01/30/2023] [Indexed: 02/01/2023]
Abstract
A highly efficient regio- and stereoselective heterogeneous palladium-catalyzed hydroboration reaction of enallenes was developed. Nanopalladium immobilized on microcrystalline cellulose (MCC) was successfully employed as an efficient catalyst for the enallene hydroboration reaction. The nanopalladium particles were shown by HAADF-STEM to have an average size of 2.4 nm. The cellulose-supported palladium catalyst exhibits high stability and provides vinyl boron products in good to high isolated yields (up to 90 %). The nanopalladium catalyst can be efficiently recycled and it was demonstrated that the catalyst can be used in 7 runs with a maintained high yield (>80 %). The vinylboron compounds prepared from enallenes are important synthetic intermediates that can be used in various organic synthetic transformations.
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Affiliation(s)
- Veluru Ramesh Naidu
- Arrhenius Laboratory, Department of Organic University, 10691, Stockholm, Sweden
- Department of Natural Sciences, Mid Sweden University, Holmgatan 10, 85170, Sundsvall, Sweden
| | - Abdolrahim A Rafi
- Department of Natural Sciences, Mid Sweden University, Holmgatan 10, 85170, Sundsvall, Sweden
| | - Cheuk-Wai Tai
- Department of Materials and Environmental Chemistry, Arrhenius Laboratory, Stockholm University, Stockholm, 10691, Sweden
| | - Jan-E Bäckvall
- Arrhenius Laboratory, Department of Organic University, 10691, Stockholm, Sweden
- Department of Natural Sciences, Mid Sweden University, Holmgatan 10, 85170, Sundsvall, Sweden
| | - Armando Córdova
- Department of Natural Sciences, Mid Sweden University, Holmgatan 10, 85170, Sundsvall, Sweden
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3
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Yang SQ, Han AJ, Liu Y, Tang XY, Lin GQ, He ZT. Catalytic Asymmetric Hydroalkoxylation and Formal Hydration and Hydroaminoxylation of Conjugated Dienes. J Am Chem Soc 2023; 145:3915-3925. [PMID: 36763785 DOI: 10.1021/jacs.2c11843] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/12/2023]
Abstract
The straightforward construction of stereogenic centers bearing unprotected functional groups, as in nature, has been a persistent pursuit in synthetic chemistry. Abundant applications of free enantioenriched allyl alcohol and allyl hydroxylamine motifs have made the asymmetric hydration and hydroaminoxylation of conjugated dienes from water and hydroxylamine, respectively, intriguing and efficient routes that have, however, been unachievable thus far. A fundamental challenge is the failure to realize transition-metal-catalyzed enantioselective C-O bond constructions via hydrofunctionalization of conjugated dienes. Here, we perform a comprehensive study toward the stereoselective formal hydration and hydroaminoxylation of conjugated dienes by synthesizing a set of new P,N-ligands and identifying an aryl-derived oxime as a surrogate for both water and hydroxylamine. Asymmetric hydroalkoxylation with new P,N-ligands is also elucidated. Furthermore, versatile derivatizations following hydration provide indirect but concise routes to formal hydrophenoxylation, hydrofluoroalkoxylation, and hydrocarboxylation of conjugated dienes that have been unreported thus far. Finally, a ligand-to-ligand hydrogen transfer process is proposed based on the results of preliminary mechanistic experiments.
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Affiliation(s)
- Shao-Qian Yang
- CAS Key Laboratory of Synthetic Chemistry of Natural Substances, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Shanghai 200032, China
| | - Ai-Jun Han
- CAS Key Laboratory of Synthetic Chemistry of Natural Substances, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Shanghai 200032, China
| | - Yang Liu
- CAS Key Laboratory of Synthetic Chemistry of Natural Substances, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Shanghai 200032, China
| | - Xin-Yuan Tang
- CAS Key Laboratory of Synthetic Chemistry of Natural Substances, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Shanghai 200032, China
| | - Guo-Qiang Lin
- CAS Key Laboratory of Synthetic Chemistry of Natural Substances, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Shanghai 200032, China
| | - Zhi-Tao He
- CAS Key Laboratory of Synthetic Chemistry of Natural Substances, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Shanghai 200032, China
- School of Chemistry and Materials Science, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou 310024, China
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4
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Dong M, Qi L, Qian J, Yu S, Tong X. Pd(0)-Catalyzed Asymmetric 7- Endo Hydroacyloxylative Cyclization of 1,6-Enyne Enabled by an Anion Ligand-Directed Strategy. J Am Chem Soc 2023; 145:1973-1981. [PMID: 36638241 DOI: 10.1021/jacs.2c12756] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
Despite diversity in reaction mechanisms, the palladium-catalyzed cyclization of 1,6-enyne generally proceeds in a 5-exo manner. Herein, we report the development of a Pd(0)-catalyzed hydroacyloxylative cyclization of 1,6-enyne in either 7-endo-trig or 6-exo-trig fashion when paired with an appropriate dihaloacetic acid reactant, such as F2HCCO2H and Cl2HCCO2H. Using the combination of Pd2(dba)3 and a chiral phosphine ligand, the hydroacyloxylative cyclization of 1,6-enyne bearing a 1,1-disubstituted alkene moiety readily gives highly enantiopure seven-membered heterocycles while the reaction of those having a 1,2-disubstituted alkene affords six-membered rings with moderate enantioselectivity. Preliminary experimental studies suggest a reaction mechanism featuring an unusual E-to-Z vinyl-Pd(II) isomerization and alkene trans-oxypalladation, which is proven to be governed by the rationally selected carboxylate.
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Affiliation(s)
- Ming Dong
- School of Pharmaceutical and Chemical Engineering & Institute for Advanced Studies, Taizhou University, Taizhou 318000, Zhejiang, China.,School of Petrochemical Engineering, Changzhou University, Gehu Road, Changzhou 213164, China
| | - Linjun Qi
- School of Pharmaceutical and Chemical Engineering & Institute for Advanced Studies, Taizhou University, Taizhou 318000, Zhejiang, China
| | - Jinlong Qian
- School of Pharmaceutical and Chemical Engineering & Institute for Advanced Studies, Taizhou University, Taizhou 318000, Zhejiang, China
| | - Shuling Yu
- School of Pharmaceutical and Chemical Engineering & Institute for Advanced Studies, Taizhou University, Taizhou 318000, Zhejiang, China
| | - Xiaofeng Tong
- School of Pharmaceutical and Chemical Engineering & Institute for Advanced Studies, Taizhou University, Taizhou 318000, Zhejiang, China.,School of Petrochemical Engineering, Changzhou University, Gehu Road, Changzhou 213164, China
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5
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Wang YC, Xiao ZX, Wang M, Yang SQ, Liu JB, He ZT. Umpolung Asymmetric 1,5-Conjugate Addition via Palladium Hydride Catalysis. Angew Chem Int Ed Engl 2023; 62:e202215568. [PMID: 36374273 DOI: 10.1002/anie.202215568] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2022] [Indexed: 11/16/2022]
Abstract
Electronically matched nucleophilic 1,6-conjugate addition has been well studied and widely applied in synthetic areas. In contrast, nucleophilic 1,5-conjugate addition represents an electronically forbidden process and is considered unfeasible. Here, we describe modular protocols for 1,5-conjugate addition reactions via palladium hydride catalysis. Both palladium and synergistic Pd/organocatalyst systems are developed to catalyze 1,5-conjugate reaction, followed by inter- or intramolecular [3+2] cyclization. A migratory 1,5-addition protocol is established to corroborate the feasibility of this umpolung concept. The 1,5-addition products are conveniently transformed into a series of privileged enantioenriched motifs, including polysubstituted tetrahydrofuran, dihydrofuran, cyclopropane, cyclobutane, azetidine, oxetane, thietane, spirocycle and bridged rings. Preliminary mechanistic studies corroborate the involvement of palladium hydride catalysis.
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Affiliation(s)
- Yu-Chao Wang
- CAS Key Laboratory of Synthetic Chemistry of Natural Substances, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Shanghai, 200032, China
- Faculty of Materials Metallurgy and Chemistry, Jiangxi University of Science and Technology, Ganzhou, 341000, China
| | - Zhao-Xin Xiao
- CAS Key Laboratory of Synthetic Chemistry of Natural Substances, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Shanghai, 200032, China
| | - Miao Wang
- CAS Key Laboratory of Synthetic Chemistry of Natural Substances, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Shanghai, 200032, China
| | - Shao-Qian Yang
- CAS Key Laboratory of Synthetic Chemistry of Natural Substances, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Shanghai, 200032, China
| | - Jin-Biao Liu
- Faculty of Materials Metallurgy and Chemistry, Jiangxi University of Science and Technology, Ganzhou, 341000, China
| | - Zhi-Tao He
- CAS Key Laboratory of Synthetic Chemistry of Natural Substances, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Shanghai, 200032, China
- School of Chemistry and Materials Science, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou, 310024, China
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6
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Abstract
We report the first palladium hydride enabled hydroalkenylation of strained molecules. This new mild protocol proceeds via a regio- and chemoselective hydropalladation step, followed by a photoinduced radical alkyl Heck reaction. This methodology represents a new reactivity mode for strained molecules and opens new avenues for photoinduced palladium catalysis. The reaction is compatible with a wide range of functional groups and can be applied to complex structures, delivering a diverse array of highly valuable and modifiable alkenylated cyclobutanes and cyclopropanes. A hydroalkenylation/diastereoselective rearrangement cascade toward a cyclopentene scaffold has also been demonstrated.
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Affiliation(s)
- Ziyan Zhang
- Department of Chemistry and Biochemistry, The University of Texas at Dallas, Richardson, Texas 75080-3021, United States
| | - Vladimir Gevorgyan
- Department of Chemistry and Biochemistry, The University of Texas at Dallas, Richardson, Texas 75080-3021, United States
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7
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Gong X, Bai M, Lu G, Yang B, Lei T, Jiang S. Total synthesis of murraol, (E)-Suberenol and toward the collective total synthesis of exotines A, cnidimonins A-Cetc. Tetrahedron 2022. [DOI: 10.1016/j.tet.2022.133061] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
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8
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Lin HC, Knox GJ, Pearson CM, Yang C, Carta V, Snaddon TN. A Pd-H/Isothiourea Cooperative Catalysis Approach to anti-Aldol Motifs: Enantioselective α-Alkylation of Esters with Oxyallenes. Angew Chem Int Ed Engl 2022; 61:e202201753. [PMID: 35307949 DOI: 10.1002/anie.202201753] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2022] [Indexed: 12/11/2022]
Abstract
The biological and therapeutic significance of natural products is a powerful impetus for the development of efficient methods to facilitate their construction. Accordingly, and reflecting the prevalence of β-oxy-carbonyl motifs, a sophisticated arsenal of aldol-based strategies has evolved that is contingent on the generation of single enolate isomers. Since this has the potential to compromise efficiency in reagent-based paradigms, direct catalysis-based solutions would be enabling. To complement the array of substrate-based strategies, and regulate enolate geometry at the catalyst level, a direct catalytic alkylation of esters with oxyallenes has been developed. Synergizing metal hydride reactivity with Lewis base catalysis has resulted in a broad reaction scope with useful levels of stereocontrol (up to >99 % ee). Facile derivatization of these ambiphilic linchpins is demonstrated, providing access to high-value vicinal stereocenter-containing motifs, including 1,2-amino alcohols.
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Affiliation(s)
- Hua-Chen Lin
- Department of Chemistry, Indiana University, 800 East Kirkwood Avenue, Bloomington, IN 47405, USA.,Current address: School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang, 212013, P. R. China
| | - Gary J Knox
- Department of Chemistry, Indiana University, 800 East Kirkwood Avenue, Bloomington, IN 47405, USA
| | - Colin M Pearson
- Department of Chemistry, Indiana University, 800 East Kirkwood Avenue, Bloomington, IN 47405, USA
| | - Chao Yang
- Department of Chemistry, Indiana University, 800 East Kirkwood Avenue, Bloomington, IN 47405, USA
| | - Veronica Carta
- Department of Chemistry, Indiana University, 800 East Kirkwood Avenue, Bloomington, IN 47405, USA
| | - Thomas N Snaddon
- Department of Chemistry, Indiana University, 800 East Kirkwood Avenue, Bloomington, IN 47405, USA
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9
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Lin H, Knox GJ, Pearson CM, Yang C, Carta V, Snaddon TN. A Pd−H/Isothiourea Cooperative Catalysis Approach to
anti
‐Aldol Motifs: Enantioselective α‐Alkylation of Esters with Oxyallenes**. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202201753] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Hua‐Chen Lin
- Department of Chemistry Indiana University 800 East Kirkwood Avenue Bloomington IN 47405 USA
- Current address: School of Chemistry and Chemical Engineering Jiangsu University Zhenjiang 212013 P. R. China
| | - Gary J. Knox
- Department of Chemistry Indiana University 800 East Kirkwood Avenue Bloomington IN 47405 USA
| | - Colin M. Pearson
- Department of Chemistry Indiana University 800 East Kirkwood Avenue Bloomington IN 47405 USA
| | - Chao Yang
- Department of Chemistry Indiana University 800 East Kirkwood Avenue Bloomington IN 47405 USA
| | - Veronica Carta
- Department of Chemistry Indiana University 800 East Kirkwood Avenue Bloomington IN 47405 USA
| | - Thomas N. Snaddon
- Department of Chemistry Indiana University 800 East Kirkwood Avenue Bloomington IN 47405 USA
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10
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Cheng H, Yang T, Edwards M, Tang S, Xu S, Yan X. Picomole-Scale Transition Metal Electrocatalysis Screening Platform for Discovery of Mild C-C Coupling and C-H Arylation through in Situ Anodically Generated Cationic Pd. J Am Chem Soc 2022; 144:1306-1312. [PMID: 35015550 DOI: 10.1021/jacs.1c11179] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Development of new transition-metal-catalyzed electrochemistry promises to improve overall synthetic efficiency. Here, we describe the first integrated platform for online screening of electrochemical transition-metal catalysis. It utilizes the intrinsic electrochemical capabilities of nanoelectrospray ionization mass spectrometry (nano-ESI-MS) and picomole-scale anodic corrosion of a Pd electrode to generate and evaluate highly efficient cationic catalysts for mild electrocatalysis. We demonstrate the power of the novel electrocatalysis platform by (1) identifying electrolytic Pd-catalyzed Suzuki coupling at room temperature, (2) discovering Pd-catalyzed electrochemical C-H arylation in the absence of external oxidant or additive, (3) developing electrolyzed Suzuki coupling/C-H arylation cascades, and (4) achieving late-stage functionalization of two drug molecules by the newly developed mild electrocatalytic C-H arylation. More importantly, the scale-up reactions confirm that new electrochemical pathways discovered by nano-ESI can be implemented under the conventional electrolytic reaction conditions. This approach enables in situ mechanistic studies by capturing various intermediates including transient transition metal species by MS, and thus uncovering the critical role of anodically generated cationic Pd catalyst in promoting otherwise sluggish transmetalation in C-H arylation. The anodically generated cationic Pd with superior catalytic efficiency and novel online electrochemical screening platform hold great potential for discovering mild transition-metal-catalyzed reactions.
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Affiliation(s)
- Heyong Cheng
- Department of Chemistry, Texas A&M University, College Station, Texas 77843, United States.,College of Material, Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou 311121, China
| | - Tingyuan Yang
- Department of Chemistry, Texas A&M University, College Station, Texas 77843, United States
| | - Madison Edwards
- Department of Chemistry, Texas A&M University, College Station, Texas 77843, United States
| | - Shuli Tang
- Department of Chemistry, Texas A&M University, College Station, Texas 77843, United States
| | - Shiqing Xu
- Department of Chemistry, Texas A&M University, College Station, Texas 77843, United States
| | - Xin Yan
- Department of Chemistry, Texas A&M University, College Station, Texas 77843, United States
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11
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Hurst MR, Zakharov LN, Cook AK. The mechanism of oxidative addition of Pd(0) to Si-H bonds: electronic effects, reaction mechanism, and hydrosilylation. Chem Sci 2021; 12:13045-13060. [PMID: 34745535 PMCID: PMC8513848 DOI: 10.1039/d1sc04419b] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2021] [Accepted: 09/03/2021] [Indexed: 12/12/2022] Open
Abstract
The oxidative addition of Pd to Si-H bonds is a crucial step in a variety of catalytic applications, and many aspects of this reaction are poorly understood. One important yet underexplored aspect is the electronic effect of silane substituents on reactivity. Herein we describe a systematic investigation of the formation of silyl palladium hydride complexes as a function of silane identity, focusing on electronic influence of the silanes. Using [(μ-dcpe)Pd]2 (dcpe = dicyclohexyl(phosphino)ethane) and tertiary silanes, data show that equilibrium strongly favours products formed from electron-deficient silanes, and is fully dynamic with respect to both temperature and product distribution. A notable kinetic isotope effect (KIE) of 1.21 is observed with H/DSiPhMe2 at 233 K, and the reaction is shown to be 0.5th order in [(μ-dcpe)Pd]2 and 1st order in silane. Formed complexes exhibit temperature-dependent intramolecular H/Si ligand exchange on the NMR timescale, allowing determination of the energetic barrier to reversible oxidative addition. Taken together, these results give unique insight into the individual steps of oxidative addition and suggest the initial formation of a σ-complex intermediate to be rate-limiting. The insight gained from these mechanistic studies was applied to hydrosilylation of alkynes, which shows parallel trends in the effect of the silanes' substituents. Importantly, this work highlights the relevance of in-depth mechanistic studies of fundamental steps to catalysis.
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Affiliation(s)
- Michael R Hurst
- Department of Chemistry and Biochemistry, University of Oregon Eugene OR 97403 USA
| | - Lev N Zakharov
- Department of Chemistry and Biochemistry, University of Oregon Eugene OR 97403 USA
| | - Amanda K Cook
- Department of Chemistry and Biochemistry, University of Oregon Eugene OR 97403 USA
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12
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Palladium-catalyzed regio- and enantioselective migratory allylic C(sp 3)-H functionalization. Nat Commun 2021; 12:5626. [PMID: 34561444 PMCID: PMC8463607 DOI: 10.1038/s41467-021-25978-6] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2021] [Accepted: 09/10/2021] [Indexed: 11/12/2022] Open
Abstract
Transition metal-catalyzed asymmetric allylic substitution with a suitably pre-stored leaving group in the substrate is widely used in organic synthesis. In contrast, the enantioselective allylic C(sp3)-H functionalization is more straightforward but far less explored. Here we report a catalytic protocol for the long-standing challenging enantioselective allylic C(sp3)-H functionalization. Through palladium hydride-catalyzed chain-walking and allylic substitution, allylic C-H functionalization of a wide range of acyclic nonconjugated dienes is achieved in high yields (up to 93% yield), high enantioselectivities (up to 98:2 er), and with 100% atom efficiency. Exploring the reactivity of substrates with varying pKa values uncovers a reasonable scope of nucleophiles and potential factors controlling the reaction. A set of efficient downstream transformations to enantiopure skeletons showcase the practical value of the methodology. Mechanistic experiments corroborate the PdH-catalyzed asymmetric migratory allylic substitution process. Alkene isomerizations and asymmetric C–H functionalizations have been independently studied, but their combination in one protocol is uncommon. Here the authors show a palladium-catalyzed method to iteratively “walk” a terminal alkene along a carbon chain to a position next to styrenes where a soft nucleophile is added asymmetrically.
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13
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Novakovic K, Bruk L, Temkin O. History, versatility and future prospects of oscillatory carbonylation reactions of alkynes. RSC Adv 2021; 11:24336-24344. [PMID: 35479017 PMCID: PMC9036888 DOI: 10.1039/d1ra03810a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2021] [Accepted: 06/21/2021] [Indexed: 12/24/2022] Open
Abstract
The paper looks back at three decades of oscillatory carbonylation reactions, summarises core findings and shares perspectives, with particular emphasis on applications. Oscillatory carbonylation reactions of alkynes display remarkable versatility in terms of substrates, catalysts and solvents. Furthermore, in addition to oscillations in pH and redox potential, these organic chemical oscillators can yield oscillations in turbidity and release heat from the reaction in a pulsatile manner. Recent research developments shift attention from small molecule substrates (e.g. phenylacetylene) and small molecule catalysts (e.g. palladium(ii) iodide), to oscillatory carbonylation reactions using polymeric substrates (e.g. PEGylated alkynes) and polymeric catalysts (e.g. imine-functionalized chitosan-palladium) and use of these polymeric building blocks to develop oscillatory (pulsatile) materials fit for pulsatile drug release and other applications. The BT-GN reactions are versatile chemical oscillators, oscillating in pH, redox potential and turbidity, and releasing heat in a pulsatile manner. The reaction system has a potential to be coupled with intelligent materials and yield applications.![]()
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Affiliation(s)
- Katarina Novakovic
- School of Engineering, Newcastle University Newcastle upon Tyne NE1 7RU UK
| | - Lev Bruk
- MIREA-Russian Technological University (Lomonosov Institute of Fine Chemical Technologies) Moscow 119571 Russia
| | - Oleg Temkin
- MIREA-Russian Technological University (Lomonosov Institute of Fine Chemical Technologies) Moscow 119571 Russia
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14
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Dethe DH, Beeralingappa NC, Uike A. Ruthenium-Catalyzed Oxidative Cross-Coupling Reaction of Activated Olefins with Vinyl Boronates for the Synthesis of ( E, E)-1,3-Dienes. J Org Chem 2021; 86:3444-3455. [PMID: 33541080 DOI: 10.1021/acs.joc.0c02823] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
An oxidative cross-coupling reaction between activated olefins and vinyl boronate derivatives has been developed for the highly stereoselective construction of synthetically useful (E,E)-1,3-dienes. The highlight of this reaction is that exclusive stereoselectivity (only E,E-isomer) was achieved from a base-free, ligand-free, and mild catalytic condition with a less expensive [RuCl2(p-cymene)]2 catalyst.
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Affiliation(s)
- Dattatraya H Dethe
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur 208016, India
| | | | - Amar Uike
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur 208016, India
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15
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Soengas RG, Rodríguez-Solla H. Modern Synthetic Methods for the Stereoselective Construction of 1,3-Dienes. Molecules 2021; 26:molecules26020249. [PMID: 33418882 PMCID: PMC7825119 DOI: 10.3390/molecules26020249] [Citation(s) in RCA: 35] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2020] [Revised: 12/31/2020] [Accepted: 01/03/2021] [Indexed: 11/16/2022] Open
Abstract
The 1,3-butadiene motif is widely found in many natural products and drug candidates with relevant biological activities. Moreover, dienes are important targets for synthetic chemists, due to their ability to give access to a wide range of functional group transformations, including a broad range of C-C bond-forming processes. Therefore, the stereoselective preparation of dienes have attracted much attention over the past decades, and the search for new synthetic protocols continues unabated. The aim of this review is to give an overview of the diverse methodologies that have emerged in the last decade, with a focus on the synthetic processes that meet the requirements of efficiency and sustainability of modern organic chemistry.
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16
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Ge Y, Ye F, Liu J, Yang J, Spannenberg A, Jiao H, Jackstell R, Beller M. Ligand-Controlled Palladium-Catalyzed Carbonylation of Alkynols: Highly Selective Synthesis of α-Methylene-β-Lactones. Angew Chem Int Ed Engl 2020; 59:21585-21590. [PMID: 32573055 PMCID: PMC7756850 DOI: 10.1002/anie.202006550] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2020] [Revised: 06/12/2020] [Indexed: 12/20/2022]
Abstract
The first general and regioselective Pd-catalyzed cyclocarbonylation to give α-methylene-β-lactones is reported. Key to the success for this process is the use of a specific sterically demanding phosphine ligand based on N-arylated imidazole (L11) in the presence of Pd(MeCN)2 Cl2 as pre-catalyst. A variety of easily available alkynols provide under additive-free conditions the corresponding α-methylene-β-lactones in moderate to good yields with excellent regio- and diastereoselectivity. The applicability of this novel methodology is showcased by the direct carbonylation of biologically active molecules including natural products.
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Affiliation(s)
- Yao Ge
- Leibniz-Institute for CatalysisAlbert-Einstein-Straße 29a18059RostockGermany
| | - Fei Ye
- Leibniz-Institute for CatalysisAlbert-Einstein-Straße 29a18059RostockGermany
- Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education, Key Laboratory of Organosilicon Material Technology of Zhejiang ProvinceHangzhou Normal UniversityNo. 2318, Yuhangtang Road311121HangzhouP. R. China
| | - Jiawang Liu
- Leibniz-Institute for CatalysisAlbert-Einstein-Straße 29a18059RostockGermany
| | - Ji Yang
- Leibniz-Institute for CatalysisAlbert-Einstein-Straße 29a18059RostockGermany
| | - Anke Spannenberg
- Leibniz-Institute for CatalysisAlbert-Einstein-Straße 29a18059RostockGermany
| | - Haijun Jiao
- Leibniz-Institute for CatalysisAlbert-Einstein-Straße 29a18059RostockGermany
| | - Ralf Jackstell
- Leibniz-Institute for CatalysisAlbert-Einstein-Straße 29a18059RostockGermany
| | - Matthias Beller
- Leibniz-Institute for CatalysisAlbert-Einstein-Straße 29a18059RostockGermany
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17
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Grünwald A, Heinemann FW, Munz D. Oxidative Addition of Water, Alcohols, and Amines in Palladium Catalysis. Angew Chem Int Ed Engl 2020; 59:21088-21095. [PMID: 32745317 PMCID: PMC7692900 DOI: 10.1002/anie.202008350] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2020] [Revised: 07/22/2020] [Indexed: 11/25/2022]
Abstract
The homolytic cleavage of O-H and N-H or weak C-H bonds is a key elementary step in redox catalysis, but is thought to be unfeasible for palladium. In stark contrast, reported here is the room temperature and reversible oxidative addition of water, isopropanol, hexafluoroisopropanol, phenol, and aniline to a palladium(0) complex with a cyclic (alkyl)(amino)carbene (CAAC) and a labile pyridino ligand, as is also the case in popular N-heterocyclic carbene (NHC) palladium(II) precatalysts. The oxidative addition of protic solvents or adventitious water switches the chemoselectivity in catalysis with alkynes through activation of the terminal C-H bond. Most salient, the homolytic activation of alcohols and amines allows atom-efficient, additive-free cross-coupling and transfer hydrogenation under mild reaction conditions with usually unreactive, yet desirable reagents, including esters and bis(pinacolato)diboron.
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Affiliation(s)
- Annette Grünwald
- Department of Chemistry and Pharmacy, General and Inorganic ChemistryFriedrich-Alexander-Universität Erlangen-NürnbergEgerlandstraße 191058ErlangenGermany
| | - Frank W. Heinemann
- Department of Chemistry and Pharmacy, General and Inorganic ChemistryFriedrich-Alexander-Universität Erlangen-NürnbergEgerlandstraße 191058ErlangenGermany
| | - Dominik Munz
- Inorganic Chemistry: Coordination ChemistrySaarland UniversityCampus, Geb. C4.166123SaarbrückenGermany
- Department of Chemistry and Pharmacy, General and Inorganic ChemistryFriedrich-Alexander-Universität Erlangen-NürnbergEgerlandstraße 191058ErlangenGermany
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18
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Grünwald A, Heinemann FW, Munz D. Oxidative Addition of Water, Alcohols, and Amines in Palladium Catalysis. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202008350] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Annette Grünwald
- Department of Chemistry and Pharmacy, General and Inorganic Chemistry Friedrich-Alexander-Universität Erlangen-Nürnberg Egerlandstraße 1 91058 Erlangen Germany
| | - Frank W. Heinemann
- Department of Chemistry and Pharmacy, General and Inorganic Chemistry Friedrich-Alexander-Universität Erlangen-Nürnberg Egerlandstraße 1 91058 Erlangen Germany
| | - Dominik Munz
- Inorganic Chemistry: Coordination Chemistry Saarland University Campus, Geb. C4.1 66123 Saarbrücken Germany
- Department of Chemistry and Pharmacy, General and Inorganic Chemistry Friedrich-Alexander-Universität Erlangen-Nürnberg Egerlandstraße 1 91058 Erlangen Germany
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19
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Parker K, Weragoda GK, Canty AJ, Polyzos A, Ryzhov V, O’Hair RAJ. A Two-Step Catalytic Cycle for the Acceptorless Dehydrogenation of Ethane by Group 10 Metal Complexes: Role of the Metal in Reactivity and Selectivity. Organometallics 2020. [DOI: 10.1021/acs.organomet.0c00598] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Kevin Parker
- Department of Chemistry and Biochemistry, Northern Illinois University, DeKalb, Illinois 60115, United States
| | - Geethika K. Weragoda
- School of Chemistry, Bio21 Institute of Molecular Science and Biotechnology, The University of Melbourne, Melbourne, Victoria 3010, Australia
- CSIRO Manufacturing, Research Way, Clayton, Victoria 3168, Australia
| | - Allan J. Canty
- School of Natural Sciences-Chemistry, University of Tasmania, Private Bag 75, Hobart, Tasmania 7001, Australia
| | - Anastasios Polyzos
- CSIRO Manufacturing, Research Way, Clayton, Victoria 3168, Australia
- School of Chemistry, The University of Melbourne, Melbourne, Victoria 3010, Australia
| | - Victor Ryzhov
- Department of Chemistry and Biochemistry, Northern Illinois University, DeKalb, Illinois 60115, United States
| | - Richard A. J. O’Hair
- School of Chemistry, Bio21 Institute of Molecular Science and Biotechnology, The University of Melbourne, Melbourne, Victoria 3010, Australia
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20
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San Jang S, Kim YH, Youn SW. Divergent Syntheses of Indoles and Quinolines Involving N1-C2-C3 Bond Formation through Two Distinct Pd Catalyses. Org Lett 2020; 22:9151-9157. [PMID: 33048557 DOI: 10.1021/acs.orglett.0c02898] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Pd-catalyzed annulative couplings of 2-alkenylanilines with aldehydes using alcohols as both the solvent and hydrogen source have been developed. These domino processes allow divergent syntheses of two significant N-heterocycles, indoles and quinolines, from the same substrate by tuning reaction parameters, which seems to invoke two distinct mechanisms. The nature of the ligand and alcoholic solvent had a profound influence on the selectivity and efficiency of these protocols. Particularly noteworthy is that indole formation was achieved by overcoming two significant challenges, regioselective hydropalladation of alkenes and subsequent reactions between the resulting Csp3-Pd species and less reactive imines.
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Affiliation(s)
- Su San Jang
- Center for New Directions in Organic Synthesis, Department of Chemistry and Research Institute for Natural Sciences, Hanyang University, Seoul 04763, Korea
| | - Young Ho Kim
- Center for New Directions in Organic Synthesis, Department of Chemistry and Research Institute for Natural Sciences, Hanyang University, Seoul 04763, Korea
| | - So Won Youn
- Center for New Directions in Organic Synthesis, Department of Chemistry and Research Institute for Natural Sciences, Hanyang University, Seoul 04763, Korea
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21
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Zhang Y, Torker S, Sigrist M, Bregović N, Dydio P. Binuclear Pd(I)–Pd(I) Catalysis Assisted by Iodide Ligands for Selective Hydroformylation of Alkenes and Alkynes. J Am Chem Soc 2020; 142:18251-18265. [DOI: 10.1021/jacs.0c09254] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Yang Zhang
- University of Strasbourg, CNRS, ISIS UMR 7006, 8 allée Gaspard Monge, 67000 Strasbourg, France
| | - Sebastian Torker
- University of Strasbourg, CNRS, ISIS UMR 7006, 8 allée Gaspard Monge, 67000 Strasbourg, France
- Department of Chemistry, Merkert Chemistry Center, Boston College, Chestnut Hill, Massachusetts 02467, United States
| | - Michel Sigrist
- University of Strasbourg, CNRS, ISIS UMR 7006, 8 allée Gaspard Monge, 67000 Strasbourg, France
| | - Nikola Bregović
- University of Strasbourg, CNRS, ISIS UMR 7006, 8 allée Gaspard Monge, 67000 Strasbourg, France
| | - Paweł Dydio
- University of Strasbourg, CNRS, ISIS UMR 7006, 8 allée Gaspard Monge, 67000 Strasbourg, France
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22
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Ge Y, Ye F, Liu J, Yang J, Spannenberg A, Jiao H, Jackstell R, Beller M. Ligand‐Controlled Palladium‐Catalyzed Carbonylation of Alkynols: Highly Selective Synthesis of α‐Methylene‐β‐Lactones. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202006550] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Yao Ge
- Leibniz-Institute for Catalysis Albert-Einstein-Straße 29a 18059 Rostock Germany
| | - Fei Ye
- Leibniz-Institute for Catalysis Albert-Einstein-Straße 29a 18059 Rostock Germany
- Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education, Key Laboratory of Organosilicon Material Technology of Zhejiang Province Hangzhou Normal University No. 2318, Yuhangtang Road 311121 Hangzhou P. R. China
| | - Jiawang Liu
- Leibniz-Institute for Catalysis Albert-Einstein-Straße 29a 18059 Rostock Germany
| | - Ji Yang
- Leibniz-Institute for Catalysis Albert-Einstein-Straße 29a 18059 Rostock Germany
| | - Anke Spannenberg
- Leibniz-Institute for Catalysis Albert-Einstein-Straße 29a 18059 Rostock Germany
| | - Haijun Jiao
- Leibniz-Institute for Catalysis Albert-Einstein-Straße 29a 18059 Rostock Germany
| | - Ralf Jackstell
- Leibniz-Institute for Catalysis Albert-Einstein-Straße 29a 18059 Rostock Germany
| | - Matthias Beller
- Leibniz-Institute for Catalysis Albert-Einstein-Straße 29a 18059 Rostock Germany
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23
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Hu J, Pan S, Zhu S, Yu P, Xu R, Zhong G, Zeng X. Pd-Catalyzed Dearomative Asymmetric Allylic Alkylation of Naphthols with Alkoxyallenes. J Org Chem 2020; 85:7896-7904. [DOI: 10.1021/acs.joc.0c00582] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Jinjin Hu
- College of Material Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou 310036, China
| | - Shulei Pan
- College of Material Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou 310036, China
| | - Shuai Zhu
- Shenzhen Grubbs Institute and Department of Chemistry, Southern University of Science and Technology, Shenzhen 518055, China
| | - Peiyuan Yu
- Shenzhen Grubbs Institute and Department of Chemistry, Southern University of Science and Technology, Shenzhen 518055, China
| | - Ruigang Xu
- College of Material Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou 310036, China
| | - Guofu Zhong
- College of Material Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou 310036, China
| | - Xiaofei Zeng
- College of Material Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou 310036, China
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24
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Wierschen AL, Lowe J, Romano N, Lee SJ, Gagné MR. Silylpalladium Cations Enable the Cleavage of Nitrile C–CN Bonds. Organometallics 2020. [DOI: 10.1021/acs.organomet.0c00034] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Andreas L. Wierschen
- Caudill Laboratories, Department of Chemistry, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599-3290, United States
| | - Jared Lowe
- Caudill Laboratories, Department of Chemistry, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599-3290, United States
| | - Neyen Romano
- Caudill Laboratories, Department of Chemistry, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599-3290, United States
| | - Stephen J. Lee
- U.S. Army Research Office, P.O. Box 12211, Research Triangle Park, North Carolina 27709, United States
| | - Michel R. Gagné
- Caudill Laboratories, Department of Chemistry, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599-3290, United States
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25
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Nakashima Y, Hirata G, Sheppard TD, Nishikata T. The Mizoroki‐Heck Reaction with Internal Olefins: Reactivities and Stereoselectivities. ASIAN J ORG CHEM 2020. [DOI: 10.1002/ajoc.201900741] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Yusei Nakashima
- Graduate School of Science and EngineeringYamaguchi University 2-16-1 Tokiwadai, Ube Yamaguchi 755-8611 Japan
| | - Goki Hirata
- Graduate School of Science and EngineeringYamaguchi University 2-16-1 Tokiwadai, Ube Yamaguchi 755-8611 Japan
| | - Tom D. Sheppard
- Department of Chemistry University College LondonChristopher Ingold Laboratories 20 Gordon Street London WC1H 0AJ U.K
| | - Takashi Nishikata
- Graduate School of Science and EngineeringYamaguchi University 2-16-1 Tokiwadai, Ube Yamaguchi 755-8611 Japan
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26
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Yin X, Chen B, Qiu F, Wang X, Liao Y, Wang M, Lei X, Liao J. Enantioselective Palladium-Catalyzed Hydrofluorination of Alkenylarenes. ACS Catal 2020. [DOI: 10.1021/acscatal.9b05264] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Xuemei Yin
- Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, People’s Republic of China
- University of Chinese Academy of Sciences, Beijing 100049, People’s Republic of China
| | - Bin Chen
- Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, People’s Republic of China
| | - Feng Qiu
- School of Pharmaceutical Sciences, South-Central University for Nationalities, Wuhan 430074, People’s Republic of China
| | - Xihong Wang
- Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, People’s Republic of China
- University of Chinese Academy of Sciences, Beijing 100049, People’s Republic of China
| | - Yang Liao
- Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, People’s Republic of China
- University of Chinese Academy of Sciences, Beijing 100049, People’s Republic of China
| | - Min Wang
- Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, People’s Republic of China
- University of Chinese Academy of Sciences, Beijing 100049, People’s Republic of China
| | - Xinxiang Lei
- School of Pharmaceutical Sciences, South-Central University for Nationalities, Wuhan 430074, People’s Republic of China
| | - Jian Liao
- Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, People’s Republic of China
- University of Chinese Academy of Sciences, Beijing 100049, People’s Republic of China
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27
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Tsukamoto H, Konno T, Ito K, Doi T. Palladium(0)–Lithium Iodide Cocatalyzed Asymmetric Hydroalkylation of Conjugated Enynes with Pronucleophiles Leading to 1,3-Disubstituted Allenes. Org Lett 2019; 21:6811-6814. [DOI: 10.1021/acs.orglett.9b02439] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Hirokazu Tsukamoto
- Graduate School of Pharmaceutical Sciences, Tohoku University, 6-3 Aza-aoba,
Aramaki, Aoba-ku, Sendai 980-8578, Japan
- Department of Pharmaceutical Sciences, Yokohama University of Pharmacy, 601 Matano-cho, Totsuka-ku, Yokohama 245-0066, Japan
| | - Tatsuya Konno
- Graduate School of Pharmaceutical Sciences, Tohoku University, 6-3 Aza-aoba,
Aramaki, Aoba-ku, Sendai 980-8578, Japan
| | - Kazuya Ito
- Graduate School of Pharmaceutical Sciences, Tohoku University, 6-3 Aza-aoba,
Aramaki, Aoba-ku, Sendai 980-8578, Japan
| | - Takayuki Doi
- Graduate School of Pharmaceutical Sciences, Tohoku University, 6-3 Aza-aoba,
Aramaki, Aoba-ku, Sendai 980-8578, Japan
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28
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Wang DL, Guo WD, Liu L, Zhou Q, Liang WY, Lu Y, Liu Y. Pd-catalyzed hydroaminocarbonylation of alkynes with aliphatic amines and its mechanism study. Catal Sci Technol 2019. [DOI: 10.1039/c8cy02337a] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
This work describes the hydroaminocarbonylation of alkynes with aliphatic amines free of any acid additive.
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Affiliation(s)
- Dong-Liang Wang
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes
- School of Chemistry & Molecular Engineering
- East China Normal University
- Shanghai
- China
| | - Wen-Di Guo
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes
- School of Chemistry & Molecular Engineering
- East China Normal University
- Shanghai
- China
| | - Lei Liu
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes
- School of Chemistry & Molecular Engineering
- East China Normal University
- Shanghai
- China
| | - Qing Zhou
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes
- School of Chemistry & Molecular Engineering
- East China Normal University
- Shanghai
- China
| | - Wen-Yu Liang
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes
- School of Chemistry & Molecular Engineering
- East China Normal University
- Shanghai
- China
| | - Yong Lu
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes
- School of Chemistry & Molecular Engineering
- East China Normal University
- Shanghai
- China
| | - Ye Liu
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes
- School of Chemistry & Molecular Engineering
- East China Normal University
- Shanghai
- China
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29
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Sajjad MA, Harrison JA, Nielson AJ, Schwerdtfeger P. NBO Orbital Interaction Analysis for the Ambiphilic Metal–Ligand Activation/Concerted Metalation Deprotonation (AMLA/CMD) Mechanism Involved in the Cyclopalladation Reaction of N,N-Dimethylbenzylamine with Palladium Acetate. Organometallics 2018. [DOI: 10.1021/acs.organomet.8b00303] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- M. Arif Sajjad
- Chemistry, Institute of Natural and Mathematical Sciences, Massey University, Private Bag 102904, North Shore Mail Centre, Auckland 0632, New Zealand
| | - John A. Harrison
- Chemistry, Institute of Natural and Mathematical Sciences, Massey University, Private Bag 102904, North Shore Mail Centre, Auckland 0632, New Zealand
| | - Alastair J. Nielson
- Chemistry, Institute of Natural and Mathematical Sciences, Massey University, Private Bag 102904, North Shore Mail Centre, Auckland 0632, New Zealand
| | - Peter Schwerdtfeger
- Centre for Theoretical Chemistry and Physics, Institute of Advanced Studies Massey University at Auckland, Private
Bag 102904, North Shore Mail Centre, Auckland 0745, New Zealand
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30
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Arroniz C, Chaubet G, Anderson EA. Dual Oxidation State Tandem Catalysis in the Palladium-Catalyzed Isomerization of Alkynyl Epoxides to Furans. ACS Catal 2018. [DOI: 10.1021/acscatal.8b02248] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Carlos Arroniz
- Chemistry Research Laboratory, 12 Mansfield Road, Oxford, OX1 3TA, United Kingdom
| | - Guilhem Chaubet
- Chemistry Research Laboratory, 12 Mansfield Road, Oxford, OX1 3TA, United Kingdom
| | - Edward A. Anderson
- Chemistry Research Laboratory, 12 Mansfield Road, Oxford, OX1 3TA, United Kingdom
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31
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Huang Z, Cheng Y, Chen X, Wang HF, Du CX, Li Y. Regioselectivity inversion tuned by iron(iii) salts in palladium-catalyzed carbonylations. Chem Commun (Camb) 2018; 54:3967-3970. [DOI: 10.1039/c8cc01190g] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
We disclose the Pd-catalyzed carbonylation of alkenes and alcohols, with the regioselectivity tuned by the anion of Fe(iii) salts.
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Affiliation(s)
- Zijun Huang
- State Key Laboratory for Oxo Synthesis and Selective Oxidation
- Suzhou Research Institute of LICP
- Lanzhou Institute of Chemical Physics (LICP)
- Chinese Academy of Sciences
- Lanzhou 730000
| | - Yazhe Cheng
- State Key Laboratory for Oxo Synthesis and Selective Oxidation
- Suzhou Research Institute of LICP
- Lanzhou Institute of Chemical Physics (LICP)
- Chinese Academy of Sciences
- Lanzhou 730000
| | - Xipeng Chen
- State Key Laboratory for Oxo Synthesis and Selective Oxidation
- Suzhou Research Institute of LICP
- Lanzhou Institute of Chemical Physics (LICP)
- Chinese Academy of Sciences
- Lanzhou 730000
| | - Hui-Fang Wang
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
- Suzhou 215123
| | - Chen-Xia Du
- College of Chemistry and Molecular Engineering
- Zhengzhou University
- Zhengzhou 450001
- P. R. China
| | - Yuehui Li
- State Key Laboratory for Oxo Synthesis and Selective Oxidation
- Suzhou Research Institute of LICP
- Lanzhou Institute of Chemical Physics (LICP)
- Chinese Academy of Sciences
- Lanzhou 730000
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32
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Kristensen SK, Eikeland EZ, Taarning E, Lindhardt AT, Skrydstrup T. Ex situ generation of stoichiometric HCN and its application in the Pd-catalysed cyanation of aryl bromides: evidence for a transmetallation step between two oxidative addition Pd-complexes. Chem Sci 2017; 8:8094-8105. [PMID: 29568458 PMCID: PMC5855124 DOI: 10.1039/c7sc03912c] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2017] [Accepted: 10/06/2017] [Indexed: 01/05/2023] Open
Abstract
A protocol for the Pd-catalysed cyanation of aryl bromides using near stoichiometric and gaseous hydrogen cyanide is reported for the first time. A two-chamber reactor was adopted for the safe liberation of ex situ generated HCN in a closed environment, which proved highly efficient in the Ni-catalysed hydrocyanation as the test reaction. Subsequently, this setup was exploited for converting a range of aryl and heteroaryl bromides (28 examples) directly into the corresponding benzonitriles in high yields, without the need for cyanide salts. Cyanation was achieved employing the Pd(0) precatalyst, P(tBu)3-Pd-G3 and a weak base, potassium acetate, in a dioxane-water solvent mixture. The methodology was also suitable for the synthesis of 13C-labelled benzonitriles with ex situ generated 13C-hydrogen cyanide. Stoichiometric studies with the metal complexes were undertaken to delineate the mechanism for this catalytic transformation. Treatment of Pd(P(tBu)3)2 with H13CN in THF provided two Pd-hydride complexes, (P(tBu)3)2Pd(H)(13CN), and [(P(tBu)3)Pd(H)]2Pd(13CN)4, both of which were isolated and characterised by NMR spectroscopy and X-ray crystal structure analysis. When the same reaction was performed in a THF : water mixture in the presence of KOAc, only (P(tBu)3)2Pd(H)(13CN) was formed. Subjection of this cyano hydride metal complex with the oxidative addition complex (P(tBu)3)Pd(Ph)(Br) in a 1 : 1 ratio in THF led to a transmetallation step with the formation of (P(tBu)3)2Pd(H)(Br) and 13C-benzonitrile from a reductive elimination step. These experiments suggest the possibility of a catalytic cycle involving initially the formation of two Pd(ii)-species from the oxidative addition of L n Pd(0) into HCN and an aryl bromide followed by a transmetallation step to L n Pd(Ar)(CN) and L n Pd(H)(Br), which both reductively eliminate, the latter in the presence of KOAc, to generate the benzonitrile and L n Pd(0).
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Affiliation(s)
- Steffan K Kristensen
- Carbon Dioxide Activation Center (CADIAC) , The Interdisciplinary Center (iNANO) , Department of Chemistry , Aarhus University , Gustav Wieds Vej 14 , 8000 Aarhus , Denmark .
| | - Espen Z Eikeland
- Center for Materials Crystallography , The Interdisciplinary Center (iNANO) , Department of Chemistry , Aarhus University , Langelandsgade 140 , 8000 Aarhus , Denmark
| | - Esben Taarning
- Haldor Topsøe A/S , New Business R&D , Nymøllevej 55, 2800 Kgs , Lyngby , Denmark
| | - Anders T Lindhardt
- Carbon Dioxide Activation Center (CADIAC) , The Interdisciplinary Center (iNANO) , Biological and Chemical Engineering , Department of Engineering , Aarhus University , Finlandsgade 22 , 8200 Aarhus N , Denmark
| | - Troels Skrydstrup
- Carbon Dioxide Activation Center (CADIAC) , The Interdisciplinary Center (iNANO) , Department of Chemistry , Aarhus University , Gustav Wieds Vej 14 , 8000 Aarhus , Denmark .
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33
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Senan AM, Zhang S, Zeng M, Chen Z, Yin G. Transformation of Unsaturated Fatty Acids/Esters to Corresponding Keto Fatty Acids/Esters by Aerobic Oxidation with Pd(II)/Lewis Acid Catalyst. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2017; 65:6912-6918. [PMID: 28719749 DOI: 10.1021/acs.jafc.7b02017] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Utilization of renewable biomass to partly replace the fossil resources in industrial applications has attracted attention due to the limited fossil feedstock with the increased environmental concerns. This work introduced a modified Wacker-type oxidation for transformation of unsaturated fatty acids/esters to the corresponding keto fatty acids/esters, in which Cu2+ cation was replaced with common nonredox metal ions, that is, a novel Pd(II)/Lewis acid (LA) catalyst. It was found that adding nonredox metal ions can effectively promote Pd(II)-catalyzed oxidation of unsaturated fatty acids/esters to the corresponding keto fatty acids/esters, even much better than Cu2+, and the promotional effect is highly dependent on the Lewis acidity of added nonredox metal ions. The improved catalytic efficiency is attributed to the formation of heterobimetallic Pd(II)/LA species, and the oxidation mechanism of this Pd(II)/LA catalyst is also briefly discussed.
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Affiliation(s)
- Ahmed M Senan
- School of Chemistry and Chemical Engineering, Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, Hubei Key Laboratory of Material Chemistry and Service Failure, Huazhong University of Science and Technology , Wuhan 430074, PR China
| | - Sicheng Zhang
- School of Chemistry and Chemical Engineering, Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, Hubei Key Laboratory of Material Chemistry and Service Failure, Huazhong University of Science and Technology , Wuhan 430074, PR China
| | - Miao Zeng
- School of Chemistry and Chemical Engineering, Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, Hubei Key Laboratory of Material Chemistry and Service Failure, Huazhong University of Science and Technology , Wuhan 430074, PR China
| | - Zhuqi Chen
- School of Chemistry and Chemical Engineering, Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, Hubei Key Laboratory of Material Chemistry and Service Failure, Huazhong University of Science and Technology , Wuhan 430074, PR China
| | - Guochuan Yin
- School of Chemistry and Chemical Engineering, Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, Hubei Key Laboratory of Material Chemistry and Service Failure, Huazhong University of Science and Technology , Wuhan 430074, PR China
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34
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Bernar I, Fiser B, Blanco-Ania D, Gómez-Bengoa E, Rutjes FPJT. Pd-Catalyzed Hydroamination of Alkoxyallenes with Azole Heterocycles: Examples and Mechanistic Proposal. Org Lett 2017; 19:4211-4214. [PMID: 28786679 PMCID: PMC5565904 DOI: 10.1021/acs.orglett.7b01826] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
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Palladium-catalyzed regio- and enantioselective
addition of azole heterocycles to alkoxyallenes was developed (up
to 92% yields and up to 94% ee). DFT calculations suggest a new Pd(0)-driven
mechanistic pathway proceeding through protonation of the Pd-coordinated
allene (4-PdL2), which develops a strongly
nucleophilic character at the central C atom.
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Affiliation(s)
- Ivan Bernar
- Institute for Molecules and Materials, Radboud University , Heyendaalseweg 135, 6525 AJ Nijmegen, The Netherlands
| | - Béla Fiser
- Department of Organic Chemistry I, University of the Basque Country (UPV/EHU) , P.O. Box 1072, 20080 Donostia-San Sebastián, Spain.,Institute of Chemistry, Faculty of Materials Science and Engineering, University of Miskolc , H-3515, Egyetemváros-Miskolc, Hungary
| | - Daniel Blanco-Ania
- Institute for Molecules and Materials, Radboud University , Heyendaalseweg 135, 6525 AJ Nijmegen, The Netherlands
| | - Enrique Gómez-Bengoa
- Department of Organic Chemistry I, University of the Basque Country (UPV/EHU) , P.O. Box 1072, 20080 Donostia-San Sebastián, Spain
| | - Floris P J T Rutjes
- Institute for Molecules and Materials, Radboud University , Heyendaalseweg 135, 6525 AJ Nijmegen, The Netherlands
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35
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Mekareeya A, Walker PR, Couce-Rios A, Campbell CD, Steven A, Paton RS, Anderson EA. Mechanistic Insight into Palladium-Catalyzed Cycloisomerization: A Combined Experimental and Theoretical Study. J Am Chem Soc 2017; 139:10104-10114. [DOI: 10.1021/jacs.7b05436] [Citation(s) in RCA: 47] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- Aroonroj Mekareeya
- Chemistry
Research Laboratory, University of Oxford, 12 Mansfield Road, Oxford OX1 3TA, U.K
| | - P. Ross Walker
- Chemistry
Research Laboratory, University of Oxford, 12 Mansfield Road, Oxford OX1 3TA, U.K
| | - Almudena Couce-Rios
- Departament
de Química, Universitat Autònoma de Barcelona, 08193 Cerdanyola del Vallès, Spain
| | - Craig D. Campbell
- Chemistry
Research Laboratory, University of Oxford, 12 Mansfield Road, Oxford OX1 3TA, U.K
| | - Alan Steven
- AstraZeneca Pharmaceutical Techology and Development, Charter Way, Macclesfield,
Cheshire SK10 2NA, U.K
| | - Robert S. Paton
- Chemistry
Research Laboratory, University of Oxford, 12 Mansfield Road, Oxford OX1 3TA, U.K
| | - Edward A. Anderson
- Chemistry
Research Laboratory, University of Oxford, 12 Mansfield Road, Oxford OX1 3TA, U.K
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36
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Yao Y, Stavrou E, Goncharov AF, Majumdar A, Wang H, Prakapenka VB, Epshteyn A, Purdy AP. High-pressure phase transition of alkali metal-transition metal deuteride Li 2PdD 2. J Chem Phys 2017. [PMID: 28641439 DOI: 10.1063/1.4986245] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
A combined theoretical and experimental study of lithium palladium deuteride (Li2PdD2) subjected to pressures up to 50 GPa reveals one structural phase transition near 10 GPa, detected by synchrotron powder x-ray diffraction, and metadynamics simulations. The ambient-pressure tetragonal phase of Li2PdD2 transforms into a monoclinic C2/m phase that is distinct from all known structures of alkali metal-transition metal hydrides/deuterides. The structure of the high-pressure phase was characterized using ab initio computational techniques and from refinement of the powder x-ray diffraction data. In the high-pressure phase, the PdD2 complexes lose molecular integrity and are fused to extended [PdD2]∞ chains. The discovered phase transition and new structure are relevant to the possible hydrogen storage application of Li2PdD2 and alkali metal-transition metal hydrides in general.
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Affiliation(s)
- Yansun Yao
- Department of Physics and Engineering Physics, University of Saskatchewan, Saskatoon, Saskatchewan S7N 5E2, Canada
| | - Elissaios Stavrou
- Geophysical Laboratory, Carnegie Institution of Washington, NW, Washington, DC 20015, USA
| | - Alexander F Goncharov
- Geophysical Laboratory, Carnegie Institution of Washington, NW, Washington, DC 20015, USA
| | - Arnab Majumdar
- Department of Physics and Engineering Physics, University of Saskatchewan, Saskatoon, Saskatchewan S7N 5E2, Canada
| | - Hui Wang
- State Key Lab of Superhard Materials, Jilin University, Changchun 130012, China
| | - Vitali B Prakapenka
- Center for Advanced Radiation Sources, University of Chicago, Chicago, Illinois 60637, USA
| | - Albert Epshteyn
- Chemistry Division, Naval Research Laboratory, 4555 Overlook Avenue, SW, Washington, DC 20375, USA
| | - Andrew P Purdy
- Chemistry Division, Naval Research Laboratory, 4555 Overlook Avenue, SW, Washington, DC 20375, USA
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37
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Benitez-Medina GE, Amézquita-Valencia M, Cabrera A, Sharma P. Synthesis of 2,3-Disubstituted Indoles from α-Diketones and N-Substituted Anilines: One-Pot Pd-Catalyzed Reductive Amination. ChemCatChem 2017. [DOI: 10.1002/cctc.201601557] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- G. Eliad Benitez-Medina
- Instituto de Química; Universidad Nacional Autónoma de México; Ciudad Universitaria, Circuito Exterior, Coyoacán 04510 Ciudad de México México
| | - Manuel Amézquita-Valencia
- Instituto de Química; Universidad Nacional Autónoma de México; Ciudad Universitaria, Circuito Exterior, Coyoacán 04510 Ciudad de México México
| | - Armando Cabrera
- Instituto de Química; Universidad Nacional Autónoma de México; Ciudad Universitaria, Circuito Exterior, Coyoacán 04510 Ciudad de México México
| | - Pankaj Sharma
- Instituto de Química; Universidad Nacional Autónoma de México; Ciudad Universitaria, Circuito Exterior, Coyoacán 04510 Ciudad de México México
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38
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Petrone DA, Franzoni I, Ye J, Rodríguez JF, Poblador-Bahamonde AI, Lautens M. Palladium-Catalyzed Hydrohalogenation of 1,6-Enynes: Hydrogen Halide Salts and Alkyl Halides as Convenient HX Surrogates. J Am Chem Soc 2017; 139:3546-3557. [DOI: 10.1021/jacs.7b00482] [Citation(s) in RCA: 69] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- David A. Petrone
- Davenport
Research Laboratories, Department of Chemistry, University of Toronto, Toronto, Ontario M5S 3H6, Canada
| | - Ivan Franzoni
- Davenport
Research Laboratories, Department of Chemistry, University of Toronto, Toronto, Ontario M5S 3H6, Canada
| | - Juntao Ye
- Davenport
Research Laboratories, Department of Chemistry, University of Toronto, Toronto, Ontario M5S 3H6, Canada
| | - José F. Rodríguez
- Davenport
Research Laboratories, Department of Chemistry, University of Toronto, Toronto, Ontario M5S 3H6, Canada
| | | | - Mark Lautens
- Davenport
Research Laboratories, Department of Chemistry, University of Toronto, Toronto, Ontario M5S 3H6, Canada
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39
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Ahn H, Son I, Lee J, Lim HJ. Palladium−Hydride-Catalyzed Regiodivergent Isomerization of 1-Alkenes. ASIAN J ORG CHEM 2017. [DOI: 10.1002/ajoc.201600536] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Hyojung Ahn
- Medicinal Chemistry Research Center; Korea Research Institute of Chemical Technology; 141 Gajeong-ro Daejeon 305-600 Republic of Korea
- Department of Medicinal and Pharmaceutical Chemistry; University of Science & Technology; 217 Gajeong-ro Daejeon 305-350 Republic of Korea
| | - Inyoung Son
- Medicinal Chemistry Research Center; Korea Research Institute of Chemical Technology; 141 Gajeong-ro Daejeon 305-600 Republic of Korea
- Department of Chemistry; Sungkyunkwan University; 2066 Seobu-ro Suwon 440-746 Republic of Korea
| | - Jinyong Lee
- Medicinal Chemistry Research Center; Korea Research Institute of Chemical Technology; 141 Gajeong-ro Daejeon 305-600 Republic of Korea
- Graduate School of New Drug Discovery and Development; Chungnam National University; 99 Daehak-ro Daejeon 305-764 Republic of Korea
| | - Hwan Jung Lim
- Medicinal Chemistry Research Center; Korea Research Institute of Chemical Technology; 141 Gajeong-ro Daejeon 305-600 Republic of Korea
- Department of Medicinal and Pharmaceutical Chemistry; University of Science & Technology; 217 Gajeong-ro Daejeon 305-350 Republic of Korea
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40
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Hu Y, Shen Z, Huang H. Palladium-Catalyzed Intramolecular Hydroaminocarbonylation to Lactams: Additive-Free Protocol Initiated by Palladium Hydride. ACS Catal 2016. [DOI: 10.1021/acscatal.6b01939] [Citation(s) in RCA: 58] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Yue Hu
- State
Key Laboratory for Oxo Synthesis and Selective Oxidation, Lanzhou
Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou, 730000, People’s Republic of China
- University of Chinese
Academy of Sciences, Beijing, 100049, People’s Republic of China
| | - Zhiqiang Shen
- State
Key Laboratory for Oxo Synthesis and Selective Oxidation, Lanzhou
Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou, 730000, People’s Republic of China
| | - Hanmin Huang
- State
Key Laboratory for Oxo Synthesis and Selective Oxidation, Lanzhou
Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou, 730000, People’s Republic of China
- Department
of Chemistry, University of Science and Technology of China, Hefei, 230026, People’s Republic of China
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41
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The scope and mechanism of palladium-catalysed Markovnikov alkoxycarbonylation of alkenes. Nat Chem 2016; 8:1159-1166. [DOI: 10.1038/nchem.2586] [Citation(s) in RCA: 91] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2015] [Accepted: 06/30/2016] [Indexed: 11/08/2022]
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42
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Al-Jawaheri Y, Kimber MC. Synthesis of 1,3-Dienes via a Sequential Suzuki-Miyaura Coupling/Palladium-Mediated Allene Isomerization Sequence. Org Lett 2016; 18:3502-5. [PMID: 27355240 DOI: 10.1021/acs.orglett.6b01841] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
We report a facile method for the synthesis of 1,3-dienes by a sequential process consisting of a palladium-catalyzed, base-free, Suzuki-Miyaura coupling/isomerization sequence. This sequence couples boronic acids with propargyl alcohols, generating the requisite allene in situ, followed by conversion of the unactivated allene to its 1,3-diene via a hydro-palladation/dehydro-palladation process. This process is general for a range of boronic acids, including boronic acids with electron-donating and -withdrawing groups, as well as heteroarylboronic acids. Key to this process is the boric acid byproduct of the base-free Suzuki-Miyauru coupling, which generates the required palladium-hydrido complex [H-Pd(II)-OB(OH)2] required for the isomerization.
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Affiliation(s)
- Yassir Al-Jawaheri
- Department of Chemistry, Loughborough University , Loughborough, Leicestershire LE11 3TU, U.K
| | - Marc C Kimber
- Department of Chemistry, Loughborough University , Loughborough, Leicestershire LE11 3TU, U.K
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43
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Nishikata T, Abela AR, Huang S, Lipshutz BH. Cationic Pd(II)-catalyzed C-H activation/cross-coupling reactions at room temperature: synthetic and mechanistic studies. Beilstein J Org Chem 2016; 12:1040-64. [PMID: 27340491 PMCID: PMC4902085 DOI: 10.3762/bjoc.12.99] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2016] [Accepted: 04/28/2016] [Indexed: 11/23/2022] Open
Abstract
Cationic palladium(II) complexes have been found to be highly reactive towards aromatic C-H activation of arylureas at room temperature. A commercially available catalyst [Pd(MeCN)4](BF4)2 or a nitrile-free cationic palladium(II) complex generated in situ from the reaction of Pd(OAc)2 and HBF4, effectively catalyzes C-H activation/cross-coupling reactions between aryl iodides, arylboronic acids and acrylates under milder conditions than those previously reported. The nature of the directing group was found to be critical for achieving room temperature conditions, with the urea moiety the most effective in promoting facile coupling reactions at an ortho C-H position. This methodology has been utilized in a streamlined and efficient synthesis of boscalid, an agent produced on the kiloton scale annually and used to control a range of plant pathogens in broadacre and horticultural crops. Mechanistic investigations led to a proposed catalytic cycle involving three steps: (1) C-H activation to generate a cationic palladacycle; (2) reaction of the cationic palladacycle with an aryl iodide, arylboronic acid or acrylate, and (3) regeneration of the active cationic palladium catalyst. The reaction between a cationic palladium(II) complex and arylurea allowed the formation and isolation of the corresponding palladacycle intermediate, characterized by X-ray analysis. Roles of various additives in the stepwise process have also been studied.
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Affiliation(s)
- Takashi Nishikata
- Department of Chemistry & Biochemistry, University of California, Santa Barbara, CA 93106, USA
| | - Alexander R Abela
- Department of Chemistry & Biochemistry, University of California, Santa Barbara, CA 93106, USA
| | - Shenlin Huang
- Department of Chemistry & Biochemistry, University of California, Santa Barbara, CA 93106, USA
| | - Bruce H Lipshutz
- Department of Chemistry & Biochemistry, University of California, Santa Barbara, CA 93106, USA
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44
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Hampton CS, Harmata M. Mechanistic Aspects of the Palladium-Catalyzed Isomerization of Allenic Sulfones to 1-Arylsulfonyl 1,3-Dienes. J Org Chem 2016; 81:4807-22. [PMID: 27127922 DOI: 10.1021/acs.joc.6b00880] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Carissa S. Hampton
- Department of Chemistry, University of Missouri—Columbia, Columbia, Missouri 65211, United States
| | - Michael Harmata
- Department of Chemistry, University of Missouri—Columbia, Columbia, Missouri 65211, United States
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45
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Zsolnai D, Mayer P, Szőri K, London G. Pd/Al2O3-catalysed redox isomerisation of allyl alcohol: application in aldol condensation and oxidative heterocyclization reactions. Catal Sci Technol 2016. [DOI: 10.1039/c5cy01722j] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The application of the Pd/Al2O3 catalyst in allyl alcohol isomerization and subsequent aldol-condensation and heterocyclization reactions is described.
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Affiliation(s)
- Dániel Zsolnai
- Department of Organic Chemistry
- University of Szeged
- H-6720 Szeged
- Hungary
| | - Péter Mayer
- Department of Organic Chemistry
- University of Szeged
- H-6720 Szeged
- Hungary
| | - Kornél Szőri
- MTA-SZTE Stereochemistry Research Group
- H-6720 Szeged
- Hungary
| | - Gábor London
- MTA-SZTE Stereochemistry Research Group
- H-6720 Szeged
- Hungary
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46
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Gaide T, Behr A, Terhorst M, Arns A, Benski F, Vorholt AJ. Katalysatorvergleich bei der Hydroesterifizierung von 10-Undecensäuremethylester in thermomorphen Lösungsmittelsystemen. CHEM-ING-TECH 2015. [DOI: 10.1002/cite.201500096] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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47
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Li H, Dong K, Neumann H, Beller M. Palladium-Catalyzed Hydroamidocarbonylation of Olefins to Imides. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201503954] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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48
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Li H, Dong K, Neumann H, Beller M. Palladium-Catalyzed Hydroamidocarbonylation of Olefins to Imides. Angew Chem Int Ed Engl 2015. [PMID: 26212483 DOI: 10.1002/anie.201503954] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
Carbonylation reactions allow the efficient synthesis of all kinds of carbonyl-containing compounds. Here, we report a straightforward synthesis of various imides from olefins and CO for the first time. The established hydroamidocarbonylation reaction affords imides in good yields (up to 90 %) and with good regioselectivity (up to 99:1) when applying different alkenes and amides. The synthetic potential of the method is highlighted by the synthesis of Aniracetam by intramolecular hydroamidocarbonylation.
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Affiliation(s)
- Haoquan Li
- Leibniz-Institut für Katalyse e. V. an der Universität Rostock, Albert-Einstein-Strasse 29a, 18059 Rostock (Germany)
| | - Kaiwu Dong
- Leibniz-Institut für Katalyse e. V. an der Universität Rostock, Albert-Einstein-Strasse 29a, 18059 Rostock (Germany)
| | - Helfried Neumann
- Leibniz-Institut für Katalyse e. V. an der Universität Rostock, Albert-Einstein-Strasse 29a, 18059 Rostock (Germany)
| | - Matthias Beller
- Leibniz-Institut für Katalyse e. V. an der Universität Rostock, Albert-Einstein-Strasse 29a, 18059 Rostock (Germany).
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49
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Zhang G, Gao B, Huang H. Palladium-catalyzed hydroaminocarbonylation of alkenes with amines: a strategy to overcome the basicity barrier imparted by aliphatic amines. Angew Chem Int Ed Engl 2015; 54:7657-61. [PMID: 25959632 DOI: 10.1002/anie.201502405] [Citation(s) in RCA: 114] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2015] [Revised: 04/20/2015] [Indexed: 12/14/2022]
Abstract
A novel and efficient palladium-catalyzed hydroaminocarbonylation of alkenes with aminals has been developed under mild reaction conditions, and allows the synthesis of a wide range of N-alkyl linear amides in good yields with high regioselectivity. On the basis of this method, a cooperative catalytic system operating by the synergistic combination of palladium, paraformaldehyde, and acid was established for promoting the hydroaminocarbonylation of alkenes with both aromatic and aliphatic amines, which do not react well under conventional palladium-catalyzed hydroaminocarbonylation.
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Affiliation(s)
- Guoying Zhang
- State Key Laboratory for Oxo Synthesis and Selective Oxidation, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou, 730000 (China)
| | - Bao Gao
- State Key Laboratory for Oxo Synthesis and Selective Oxidation, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou, 730000 (China)
| | - Hanmin Huang
- State Key Laboratory for Oxo Synthesis and Selective Oxidation, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou, 730000 (China).
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50
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Zhang G, Gao B, Huang H. Palladium-Catalyzed Hydroaminocarbonylation of Alkenes with Amines: A Strategy to Overcome the Basicity Barrier Imparted by Aliphatic Amines. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201502405] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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