51
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Siddaraju Y, Sabbatani J, Cohen A, Marek I. Preparation of Distant Quaternary Carbon Stereocenters by Double Selective Ring-Opening of 1,1-Biscyclopropyl Methanol Derivatives. Angew Chem Int Ed Engl 2022; 61:e202203652. [PMID: 35521738 PMCID: PMC9401570 DOI: 10.1002/anie.202203652] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2022] [Indexed: 12/15/2022]
Abstract
The diastereoselective double carbometalation reaction of cyclopropenes provides, in a single-pot operation, two ω-ene-[1,1]-bicyclopropyl ester derivatives. One regioisomer then undergoes a Pd-catalyzed addition of aryl iodide to provide skipped dienes possessing several distant stereocenters including two congested quaternary carbon centers with excellent diastereoselectivity.
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Affiliation(s)
- Yogesh Siddaraju
- Schulich Faculty of Chemistry, Technion—Israel Institute of TechnologyTechnion City3200009HaifaIsrael
| | - Juliette Sabbatani
- Schulich Faculty of Chemistry, Technion—Israel Institute of TechnologyTechnion City3200009HaifaIsrael
| | - Anthony Cohen
- Schulich Faculty of Chemistry, Technion—Israel Institute of TechnologyTechnion City3200009HaifaIsrael
| | - Ilan Marek
- Schulich Faculty of Chemistry, Technion—Israel Institute of TechnologyTechnion City3200009HaifaIsrael
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52
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Wang Z, Gao P, Lin E, Li B. Stereodefined Skipped Dienes through Iridium‐Catalyzed Formal Addition of Tertiary Allylic C−H Bonds to Alkynes. Angew Chem Int Ed Engl 2022; 61:e202200075. [DOI: 10.1002/anie.202200075] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2022] [Indexed: 11/08/2022]
Affiliation(s)
- Zi‐Xuan Wang
- Center of Basic Molecular Science (CBMS) Department of Chemistry Tsinghua University Beijing 100084 China
| | - Peng‐Chao Gao
- Center of Basic Molecular Science (CBMS) Department of Chemistry Tsinghua University Beijing 100084 China
| | - En‐Ze Lin
- Center of Basic Molecular Science (CBMS) Department of Chemistry Tsinghua University Beijing 100084 China
| | - Bi‐Jie Li
- Center of Basic Molecular Science (CBMS) Department of Chemistry Tsinghua University Beijing 100084 China
- Beijing National Laboratory for Molecular Sciences Beijing 100190 China
- Haihe Laboratory of Sustainable Chemical Transformations Tianjin 300192 China
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53
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Marotta A, Adams CE, Molloy J. The Impact of Boron Hybridisation on Photocatalytic Processes. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202207067] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Alessandro Marotta
- Max Planck Institute of Colloids and Interfaces: Max-Planck-Institut fur Kolloid und Grenzflachenforschung biomolecular systems GERMANY
| | - Callum E. Adams
- Max Planck Institute of Colloids and Interfaces: Max-Planck-Institut fur Kolloid und Grenzflachenforschung biomolecular systems department GERMANY
| | - John Molloy
- Max Planck Institute of Colloids and Interfaces: Max-Planck-Institut fur Kolloid und Grenzflachenforschung Biomolecular Sytems Am Mühlenberg 1 14476 Potsdam GERMANY
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54
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Zhang H, Huang C, Yuan XA, Yu S. Photoexcited Chiral Copper Complex-Mediated Alkene E → Z Isomerization Enables Kinetic Resolution. J Am Chem Soc 2022; 144:10958-10967. [PMID: 35675512 DOI: 10.1021/jacs.2c04040] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
While asymmetric synthesis has been established as a powerful synthetic tool for the construction of versatile enantioenriched molecules in the most efficient and practical manner, the resolution of racemates is still the most universal industrial approach to the synthesis of chiral compounds. However, the direct formation of enantiopure Z-isomers through the catalytic nonenzymatic kinetic resolution of racemic E-alkenes remains challenging. Herein, we disclose an unprecedented enantioselective E → Z isomerization mediated by a photoexcited chiral copper complex. This catalytic system enables kinetic resolution of 2-styrylpyrrolidines. This process is difficult to realize under thermal conditions. Mechanistic experiments and density functional theory (DFT) calculations revealed that different overall sensitization rates of the substrate-catalyst complex of the two enantiomers led to the observed excellent kinetic resolution efficiency. This photochemical transformation expands the potential of kinetic resolution beyond their established ground-state reactivity, furnishing a novel reaction mode for enantioselective catalysis at its excited state.
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Affiliation(s)
- Hao Zhang
- State Key Laboratory of Analytical Chemistry for Life Science, Jiangsu Key Laboratory of Advanced Organic Materials, Chemistry and Biomedicine Innovation Center (ChemBIC), School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Congcong Huang
- School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, China
| | - Xiang-Ai Yuan
- School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, China
| | - Shouyun Yu
- State Key Laboratory of Analytical Chemistry for Life Science, Jiangsu Key Laboratory of Advanced Organic Materials, Chemistry and Biomedicine Innovation Center (ChemBIC), School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
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55
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Liu Y, Ni D, Stevenson BG, Tripathy V, Braley SE, Raghavachari K, Swierk JR, Brown MK. Photosensitized [2+2]-Cycloadditions of Alkenylboronates and Alkenes. Angew Chem Int Ed Engl 2022; 61:e202200725. [PMID: 35446458 DOI: 10.1002/anie.202200725] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2022] [Indexed: 12/17/2022]
Abstract
A new strategy for the synthesis of highly versatile cyclobutylboronates via the photosensitized [2+2]-cycloaddition of alkenylboronates and alkenes is presented. The process is mechanistically different from other processes in that energy transfer occurs with the alkenylboronate as opposed to the other alkene. This strategy allows for the synthesis of an array of diverse cyclobutylboronates. The conversion of these adducts to other compounds as well as their utility in the synthesis of melicodenine C is demonstrated.
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Affiliation(s)
- Yanyao Liu
- Department of Chemistry, Indiana University, 800 E. Kirkwood Ave., Bloomington, IN 47401, USA
| | - Dongshun Ni
- Department of Chemistry, Indiana University, 800 E. Kirkwood Ave., Bloomington, IN 47401, USA
| | - Bernard G Stevenson
- Department of Chemistry, Binghamton University, 4400 Vestal Parkway East, Binghamton, NY 13902, USA
| | - Vikrant Tripathy
- Department of Chemistry, Indiana University, 800 E. Kirkwood Ave., Bloomington, IN 47401, USA
| | - Sarah E Braley
- Department of Chemistry, Indiana University, 800 E. Kirkwood Ave., Bloomington, IN 47401, USA
| | - Krishnan Raghavachari
- Department of Chemistry, Indiana University, 800 E. Kirkwood Ave., Bloomington, IN 47401, USA
| | - John R Swierk
- Department of Chemistry, Binghamton University, 4400 Vestal Parkway East, Binghamton, NY 13902, USA
| | - M Kevin Brown
- Department of Chemistry, Indiana University, 800 E. Kirkwood Ave., Bloomington, IN 47401, USA
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56
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Zhang Q, Wang S, Yin J, Xiong T, Zhang Q. Remote Site-Selective Asymmetric Protoboration of Unactivated Alkenes Enabled by Bimetallic Relay Catalysis. Angew Chem Int Ed Engl 2022; 61:e202202713. [PMID: 35297558 DOI: 10.1002/anie.202202713] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2022] [Indexed: 12/14/2022]
Abstract
A remote C(sp3 )-H bond asymmetric borylation of unactivated alkenes was achieved by bimetallic relay catalysis. The reaction proceeded through reversible and consecutive β-H elimination/olefin insertion promoted by CoH species generated in situ, followed by copper-catalyzed asymmetric protoboration. The use of this synergistic Co/Cu catalysis protocol allowed the enantioselective protoboration of various unactivated terminal alkenes and internal alkenes, as well as an unrefined mixture of olefin isomers, at the distal less-reactive β-position to a functional group, leading to chiral organoboronates.
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Affiliation(s)
- Qiao Zhang
- Department of Chemistry, Northeast Normal University, Changchun, 130024, China
| | - Simin Wang
- Department of Chemistry, Northeast Normal University, Changchun, 130024, China
| | - Jianjun Yin
- Department of Chemistry, Northeast Normal University, Changchun, 130024, China
| | - Tao Xiong
- Department of Chemistry, Northeast Normal University, Changchun, 130024, China
| | - Qian Zhang
- Department of Chemistry, Northeast Normal University, Changchun, 130024, China.,State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, 345 Lingling Lu, Shanghai, 200032, China
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57
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Parts-per-million of ruthenium catalyze the selective chain-walking reaction of terminal alkenes. Nat Commun 2022; 13:2831. [PMID: 35595741 PMCID: PMC9123009 DOI: 10.1038/s41467-022-30320-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2021] [Accepted: 04/26/2022] [Indexed: 11/22/2022] Open
Abstract
The chain–walking of terminal alkenes (also called migration or isomerization reaction) is currently carried out in industry with unselective and relatively costly processes, to give mixtures of alkenes with significant amounts of oligomerized, branched and reduced by–products. Here, it is shown that part–per–million amounts of a variety of commercially available and in–house made ruthenium compounds, supported or not, transform into an extremely active catalyst for the regioselective migration of terminal alkenes to internal positions, with yields and selectivity up to >99% and without any solvent, ligand, additive or protecting atmosphere required, but only heating at temperatures >150 °C. The resulting internal alkene can be prepared in kilogram quantities, ready to be used in nine different organic reactions without any further treatment. The chain-walking of terminal alkenes is an industrially relevant reaction. Here, the authors show that part-per-million amounts of a variety of ruthenium compounds catalyze the reaction in yields and selectivity up to >99%, without any solvent or additive.
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58
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Acceptorless dehydrogenative amination of alkenes for the synthesis of N-heterocycles. Sci China Chem 2022. [DOI: 10.1007/s11426-022-1241-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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59
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Cui H, Shen Y, Chen Y, Wang R, Wei H, Fu P, Lei X, Wang H, Bi R, Zhang Y. Two-Stage Syntheses of Clionastatins A and B. J Am Chem Soc 2022; 144:8938-8944. [PMID: 35576325 DOI: 10.1021/jacs.2c03872] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
A concise and divergent synthesis of the polychlorinated marine steroids clionastatin A and B from inexpensive testosterone has been achieved through a unique two-stage chlorination-oxidation strategy. Key features of the two-stage synthesis include (1) conformationally controlled, highly stereoselective dichlorination at C1 and C2 and C4-OH-directed C19 oxygenation followed by a challenging neopentyl chlorination to install three chlorine atoms; (2) desaturation through one-pot photochemical dibromination-reductive debromination and anti-Markovnikov olefin oxidation by photoredox-metal dual catalysis to enhance the oxidation level of the backbone; and (3) Wharton transposition to furnish the D-ring enone. This synthesis proved that the introduction of the C19 chloride in the early stage of the synthesis secured the stability of the backbone against susceptibility to aromatization during the oxidation stage.
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Affiliation(s)
- Hao Cui
- Department of Chemistry and Key Laboratory of Chemical Biology of Fujian Province, iChEM, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, Fujian 361005, China
| | - Yang Shen
- Department of Chemistry and Key Laboratory of Chemical Biology of Fujian Province, iChEM, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, Fujian 361005, China
| | - Yanyu Chen
- Department of Chemistry and Key Laboratory of Chemical Biology of Fujian Province, iChEM, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, Fujian 361005, China
| | - Ruifeng Wang
- Department of Chemistry and Key Laboratory of Chemical Biology of Fujian Province, iChEM, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, Fujian 361005, China
| | - Haoxiang Wei
- Department of Chemistry and Key Laboratory of Chemical Biology of Fujian Province, iChEM, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, Fujian 361005, China
| | - Pengfei Fu
- Department of Chemistry and Key Laboratory of Chemical Biology of Fujian Province, iChEM, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, Fujian 361005, China
| | - Xin Lei
- Department of Chemistry and Key Laboratory of Chemical Biology of Fujian Province, iChEM, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, Fujian 361005, China
| | - Haoxiang Wang
- Department of Chemistry and Key Laboratory of Chemical Biology of Fujian Province, iChEM, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, Fujian 361005, China
| | - Ruihao Bi
- Department of Chemistry and Key Laboratory of Chemical Biology of Fujian Province, iChEM, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, Fujian 361005, China
| | - Yandong Zhang
- Department of Chemistry and Key Laboratory of Chemical Biology of Fujian Province, iChEM, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, Fujian 361005, China.,Laboratory for Marine Drugs and Bioproducts, Pilot National Laboratory for Marine Science and Technology, Qingdao 266000, China
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60
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Substrate Photoswitching for Rate Enhancement of an Organocatalytic Cyclization Reaction. European J Org Chem 2022. [DOI: 10.1002/ejoc.202200048] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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61
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Siddaraju Y, Sabbatani J, Cohen A, Marek I. Preparation of Distant Quaternary Carbon Stereocenters by Double Selective Ring‐Opening of 1,1‐Biscyclopropyl Methanol Derivatives. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202203652] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
| | | | - Anthony Cohen
- Technion Israel Institute of Technology Chemistry ISRAEL
| | - Ilan Marek
- Technion - Israel Institute of Technology Schulich Faculty of Chemistry Technion City 32000 Haifa ISRAEL
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62
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Wang Z, Gao P, Lin E, Li B. Stereodefined Skipped Dienes through Iridium‐Catalyzed Formal Addition of Tertiary Allylic C−H Bonds to Alkynes. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202200075] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Zi‐Xuan Wang
- Center of Basic Molecular Science (CBMS) Department of Chemistry Tsinghua University Beijing 100084 China
| | - Peng‐Chao Gao
- Center of Basic Molecular Science (CBMS) Department of Chemistry Tsinghua University Beijing 100084 China
| | - En‐Ze Lin
- Center of Basic Molecular Science (CBMS) Department of Chemistry Tsinghua University Beijing 100084 China
| | - Bi‐Jie Li
- Center of Basic Molecular Science (CBMS) Department of Chemistry Tsinghua University Beijing 100084 China
- Beijing National Laboratory for Molecular Sciences Beijing 100190 China
- Haihe Laboratory of Sustainable Chemical Transformations Tianjin 300192 China
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63
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Liu Y, Ni D, Stevenson BG, Tripathy V, Braley SE, Raghavachari K, Swierk JR, Brown MK. Photosensitized [2+2]‐Cycloadditions of Alkenylboronates and Alkenes. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202200725] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Yanyao Liu
- Department of Chemistry Indiana University 800 E. Kirkwood Ave. Bloomington IN 47401 USA
| | - Dongshun Ni
- Department of Chemistry Indiana University 800 E. Kirkwood Ave. Bloomington IN 47401 USA
| | - Bernard G. Stevenson
- Department of Chemistry Binghamton University 4400 Vestal Parkway East Binghamton NY 13902 USA
| | - Vikrant Tripathy
- Department of Chemistry Indiana University 800 E. Kirkwood Ave. Bloomington IN 47401 USA
| | - Sarah E. Braley
- Department of Chemistry Indiana University 800 E. Kirkwood Ave. Bloomington IN 47401 USA
| | - Krishnan Raghavachari
- Department of Chemistry Indiana University 800 E. Kirkwood Ave. Bloomington IN 47401 USA
| | - John R. Swierk
- Department of Chemistry Binghamton University 4400 Vestal Parkway East Binghamton NY 13902 USA
| | - M. Kevin Brown
- Department of Chemistry Indiana University 800 E. Kirkwood Ave. Bloomington IN 47401 USA
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64
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Zhang Q, Wang S, Yin J, Xiong T, Zhang Q. Remote Site‐Selective Asymmetric Protoboration of Unactivated Alkenes Enabled by Bimetallic Relay Catalysis. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202202713] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Qiao Zhang
- Northeast Normal University Department of Chemistry CHINA
| | - Simin Wang
- Northeast Normal University Department of Chemistry CHINA
| | - Jianjun Yin
- Northeast Normal University Department of Chemistry CHINA
| | - Tao Xiong
- Northeast Normal University Department of Chemistry Renmin ST. 5268 130024 ChangChun CHINA
| | - Qian Zhang
- Northeast Normal University Department of Chemistry CHINA
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65
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Corpas J, Mauleón P, Gómez Arrayás R, Carretero JC. E/Z
Photoisomerization of Olefins as an Emergent Strategy for the Control of Stereodivergence in Catalysis. Adv Synth Catal 2022. [DOI: 10.1002/adsc.202200199] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Javier Corpas
- Department of Organic Chemistry Institute for Advanced Research in Chemical Sciences (IAdChem) Center for Innovation in Advanced Chemistry (ORFEO-CINQA). Universidad Autónoma de Madrid Cantoblanco 28049 Madrid Spain
| | - Pablo Mauleón
- Department of Organic Chemistry Institute for Advanced Research in Chemical Sciences (IAdChem) Center for Innovation in Advanced Chemistry (ORFEO-CINQA). Universidad Autónoma de Madrid Cantoblanco 28049 Madrid Spain
| | - Ramón Gómez Arrayás
- Department of Organic Chemistry Institute for Advanced Research in Chemical Sciences (IAdChem) Center for Innovation in Advanced Chemistry (ORFEO-CINQA). Universidad Autónoma de Madrid Cantoblanco 28049 Madrid Spain
| | - Juan C. Carretero
- Department of Organic Chemistry Institute for Advanced Research in Chemical Sciences (IAdChem) Center for Innovation in Advanced Chemistry (ORFEO-CINQA). Universidad Autónoma de Madrid Cantoblanco 28049 Madrid Spain
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66
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Wang W, He S, Zhong Y, Chen J, Cai C, Luo Y, Xia Y. Cobalt-Catalyzed Z to E Geometrical Isomerization of 1,3-Dienes. J Org Chem 2022; 87:4712-4723. [PMID: 35275485 DOI: 10.1021/acs.joc.1c03164] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
An efficient cobalt-catalyzed geometrical isomerization of 1,3-dienes is described. In the combination of a CoCl2 precatalyst with an amido-diphosphine-oxazoline ligand, the geometrical isomerization of E/Z mixtures of 1,3-dienes proceed in a stereoconvergent manner, affording (E) isomers in high stereoselectivity. This facile transformation features a broad substrate scope with good functional group tolerance and could be scaled up to the gram scale smoothly with a catalyst loading of 1 mol %.
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Affiliation(s)
- Wei Wang
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325035, China
| | - Shuying He
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325035, China
| | - Yuqing Zhong
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325035, China
| | - Jianhui Chen
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325035, China
| | - Cheng Cai
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325035, China
| | - Yanshu Luo
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325035, China
| | - Yuanzhi Xia
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325035, China
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67
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Yu W, Jiao X, Fan Y, Zhu S, Chu L. Metallaphotoredox‐Enabled Intermolecular Carbobromination of Alkynes with Alkenyl Bromides. Adv Synth Catal 2022. [DOI: 10.1002/adsc.202200096] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Wei Yu
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials Center for Advanced Low-Dimension Materials College of Chemistry Chemical Engineering and Biotechnology Donghua University Shanghai 201620 People's Republic of China
| | - Xiaorui Jiao
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials Center for Advanced Low-Dimension Materials College of Chemistry Chemical Engineering and Biotechnology Donghua University Shanghai 201620 People's Republic of China
| | - Yanmin Fan
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials Center for Advanced Low-Dimension Materials College of Chemistry Chemical Engineering and Biotechnology Donghua University Shanghai 201620 People's Republic of China
| | - Shengqing Zhu
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials Center for Advanced Low-Dimension Materials College of Chemistry Chemical Engineering and Biotechnology Donghua University Shanghai 201620 People's Republic of China
| | - Lingling Chu
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials Center for Advanced Low-Dimension Materials College of Chemistry Chemical Engineering and Biotechnology Donghua University Shanghai 201620 People's Republic of China
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68
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Transition metal-catalyzed (remote) deconjugative isomerization of α,β-unsaturated carbonyls. Tetrahedron Lett 2022. [DOI: 10.1016/j.tetlet.2022.153756] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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69
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Kawamura KE, Chang ASM, Martin DJ, Smith HM, Morris PT, Cook AK. Modular Ni(0)/Silane Catalytic System for the Isomerization of Alkenes. Organometallics 2022. [DOI: 10.1021/acs.organomet.2c00010] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Kiana E. Kawamura
- Department of Chemistry and Biochemistry, University of Oregon, 1585 13th Avenue, Eugene, Oregon 97403, United States
| | - Alison Sy-min Chang
- Department of Chemistry and Biochemistry, University of Oregon, 1585 13th Avenue, Eugene, Oregon 97403, United States
| | - Daryl J. Martin
- Department of Chemistry and Biochemistry, University of Oregon, 1585 13th Avenue, Eugene, Oregon 97403, United States
| | - Haley M. Smith
- Department of Chemistry and Biochemistry, University of Oregon, 1585 13th Avenue, Eugene, Oregon 97403, United States
| | - Parker T. Morris
- Department of Chemistry and Biochemistry, University of Oregon, 1585 13th Avenue, Eugene, Oregon 97403, United States
| | - Amanda K. Cook
- Department of Chemistry and Biochemistry, University of Oregon, 1585 13th Avenue, Eugene, Oregon 97403, United States
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70
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Wu S, Kaur J, Karl TA, Tian X, Barham JP. Synthetische molekulare Photoelektrochemie: neue synthetische Anwendungen, mechanistische Einblicke und Möglichkeiten zur Skalierung. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202107811] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Shangze Wu
- Universität Regensburg Fakultät für Chemie und Pharmazie 93040 Regensburg Deutschland
| | - Jaspreet Kaur
- Universität Regensburg Fakultät für Chemie und Pharmazie 93040 Regensburg Deutschland
| | - Tobias A. Karl
- Universität Regensburg Fakultät für Chemie und Pharmazie 93040 Regensburg Deutschland
| | - Xianhai Tian
- Universität Regensburg Fakultät für Chemie und Pharmazie 93040 Regensburg Deutschland
| | - Joshua P. Barham
- Universität Regensburg Fakultät für Chemie und Pharmazie 93040 Regensburg Deutschland
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71
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Hanna S, Bloomer B, Ciccia NR, Butcher TW, Conk RJ, Hartwig JF. Contra-thermodynamic Olefin Isomerization by Chain-Walking Hydroboration and Dehydroboration. Org Lett 2022; 24:1005-1010. [PMID: 35080409 PMCID: PMC8931855 DOI: 10.1021/acs.orglett.1c03124] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
We report a dehydroboration process that can be coupled with chain-walking hydroboration to create a one-pot, contra-thermodynamic, short- or long-range isomerization of internal olefins to terminal olefins. This dehydroboration occurs by a sequence comprising activation with a nucleophile, iodination, and base-promoted elimination. The isomerization proceeds at room temperature without the need for a fluoride base, and the substrate scope of this isomerization is expanded over those of previous isomerizations we have reported with silanes.
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Affiliation(s)
- Steven Hanna
- Division of Chemical Sciences, Lawrence Berkeley National Laboratory, and Department of Chemistry, University of California, Berkeley, California 94720, United States
| | - Brandon Bloomer
- Division of Chemical Sciences, Lawrence Berkeley National Laboratory, and Department of Chemistry, University of California, Berkeley, California 94720, United States
| | - Nicodemo R Ciccia
- Division of Chemical Sciences, Lawrence Berkeley National Laboratory, and Department of Chemistry, University of California, Berkeley, California 94720, United States
| | - Trevor W Butcher
- Department of Chemistry, University of California, Berkeley, California 94720, United States
| | - Richard J Conk
- Division of Chemical Sciences, Lawrence Berkeley National Laboratory, and Department of Chemistry, University of California, Berkeley, California 94720, United States
| | - John F Hartwig
- Division of Chemical Sciences, Lawrence Berkeley National Laboratory, and Department of Chemistry, University of California, Berkeley, California 94720, United States
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72
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Liu W, Zheng Y, Mao Y, Chen J, Ren X, Cheng Z, Lu Z. Desymmetrizing Isomerization of Alkene via Thiazolinyl Iminoquinoline Cobalt Catalysis. Org Lett 2022; 24:1158-1163. [PMID: 35089045 DOI: 10.1021/acs.orglett.1c04237] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
We report a cobalt-catalyzed desymmetrizing isomerization of exo-cyclic alkenes to generate chiral 1-methylcyclohexene derivatives with good yields and enantioselectivities. A novel chiral thiazolinyl iminoquinoline ligand and its cobalt complex were designed and synthesized to control the establishment of tertiary or quaternary carbon centers at a remote position. This protocol is operationally simple, and a model for the stereochemical outcome has been proposed.
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Affiliation(s)
- Wenbo Liu
- Center of Chemistry for Frontier Technologies, Department of Chemistry, Zhejiang University, Hangzhou 310058, China
| | - Yushan Zheng
- Center of Chemistry for Frontier Technologies, Department of Chemistry, Zhejiang University, Hangzhou 310058, China
| | - Yihui Mao
- Center of Chemistry for Frontier Technologies, Department of Chemistry, Zhejiang University, Hangzhou 310058, China
| | - Jieping Chen
- Center of Chemistry for Frontier Technologies, Department of Chemistry, Zhejiang University, Hangzhou 310058, China
| | - Xiang Ren
- Center of Chemistry for Frontier Technologies, Department of Chemistry, Zhejiang University, Hangzhou 310058, China
| | - Zhaoyang Cheng
- Center of Chemistry for Frontier Technologies, Department of Chemistry, Zhejiang University, Hangzhou 310058, China
| | - Zhan Lu
- Center of Chemistry for Frontier Technologies, Department of Chemistry, Zhejiang University, Hangzhou 310058, China.,College of Chemistry, Zhengzhou University, Zhengzhou 450001, China
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73
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Buglioni L, Raymenants F, Slattery A, Zondag SDA, Noël T. Technological Innovations in Photochemistry for Organic Synthesis: Flow Chemistry, High-Throughput Experimentation, Scale-up, and Photoelectrochemistry. Chem Rev 2022; 122:2752-2906. [PMID: 34375082 PMCID: PMC8796205 DOI: 10.1021/acs.chemrev.1c00332] [Citation(s) in RCA: 228] [Impact Index Per Article: 114.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2021] [Indexed: 02/08/2023]
Abstract
Photoinduced chemical transformations have received in recent years a tremendous amount of attention, providing a plethora of opportunities to synthetic organic chemists. However, performing a photochemical transformation can be quite a challenge because of various issues related to the delivery of photons. These challenges have barred the widespread adoption of photochemical steps in the chemical industry. However, in the past decade, several technological innovations have led to more reproducible, selective, and scalable photoinduced reactions. Herein, we provide a comprehensive overview of these exciting technological advances, including flow chemistry, high-throughput experimentation, reactor design and scale-up, and the combination of photo- and electro-chemistry.
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Affiliation(s)
- Laura Buglioni
- Micro
Flow Chemistry and Synthetic Methodology, Department of Chemical Engineering
and Chemistry, Eindhoven University of Technology, Het Kranenveld, Bldg 14—Helix, 5600 MB, Eindhoven, The Netherlands
- Flow
Chemistry Group, van ’t Hoff Institute for Molecular Sciences
(HIMS), Universiteit van Amsterdam (UvA), Science Park 904, 1098 XH, Amsterdam, The Netherlands
| | - Fabian Raymenants
- Flow
Chemistry Group, van ’t Hoff Institute for Molecular Sciences
(HIMS), Universiteit van Amsterdam (UvA), Science Park 904, 1098 XH, Amsterdam, The Netherlands
| | - Aidan Slattery
- Flow
Chemistry Group, van ’t Hoff Institute for Molecular Sciences
(HIMS), Universiteit van Amsterdam (UvA), Science Park 904, 1098 XH, Amsterdam, The Netherlands
| | - Stefan D. A. Zondag
- Flow
Chemistry Group, van ’t Hoff Institute for Molecular Sciences
(HIMS), Universiteit van Amsterdam (UvA), Science Park 904, 1098 XH, Amsterdam, The Netherlands
| | - Timothy Noël
- Flow
Chemistry Group, van ’t Hoff Institute for Molecular Sciences
(HIMS), Universiteit van Amsterdam (UvA), Science Park 904, 1098 XH, Amsterdam, The Netherlands
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74
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Neveselý T, Molloy JJ, McLaughlin C, Brüss L, Daniliuc CG, Gilmour R. Leveraging the n→π* Interaction in Alkene Isomerization by Selective Energy Transfer Catalysis. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202113600] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Tomáš Neveselý
- Organisch-Chemisches Institut Westfälische Wilhelms-Universität Münster Corrensstrasse 36 48149 Münster Germany
| | - John J. Molloy
- Organisch-Chemisches Institut Westfälische Wilhelms-Universität Münster Corrensstrasse 36 48149 Münster Germany
- Current address: Max Planck Institute of Colloids and Interfaces Am Mühlenberg 1 14476 Potsdam Germany
| | - Calum McLaughlin
- Organisch-Chemisches Institut Westfälische Wilhelms-Universität Münster Corrensstrasse 36 48149 Münster Germany
| | - Linda Brüss
- Organisch-Chemisches Institut Westfälische Wilhelms-Universität Münster Corrensstrasse 36 48149 Münster Germany
| | - Constantin G. Daniliuc
- Organisch-Chemisches Institut Westfälische Wilhelms-Universität Münster Corrensstrasse 36 48149 Münster Germany
| | - Ryan Gilmour
- Organisch-Chemisches Institut Westfälische Wilhelms-Universität Münster Corrensstrasse 36 48149 Münster Germany
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75
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Neveselý T, Molloy JJ, McLaughlin C, Brüss L, Daniliuc CG, Gilmour R. Leveraging the n→π* Interaction in Alkene Isomerization by Selective Energy Transfer Catalysis. Angew Chem Int Ed Engl 2022; 61:e202113600. [PMID: 34748684 PMCID: PMC9299456 DOI: 10.1002/anie.202113600] [Citation(s) in RCA: 21] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2021] [Indexed: 11/09/2022]
Abstract
Examples of geometric alkene isomerization in nature are often limited to the net exergonic direction (ΔG°<0), with the antipodal net endergonic processes (ΔG°>0) comparatively under-represented. Inspired by the expansiveness of the maleate to fumarate (Z→E) isomerization in biochemistry, we investigated the inverse E→Z variant to validate nO →πC=O * interactions as a driving force for contra-thermodynamic isomerization. A general protocol involving selective energy transfer catalysis with inexpensive thioxanthone as a sensitizer (λmax =402 nm) is disclosed. Whilst in the enzymatic process nO →πC=O * interactions commonly manifest themselves in the substrate, these same interactions are shown to underpin directionality in the antipodal reaction by shortening the product alkene chromophore. The process was validated with diverse fumarate derivatives (>30 examples, up to Z:E>99:1), including the first examples of tetrasubstituted alkenes, and the involvement of nO →πC=O * interactions was confirmed by X-ray crystallography.
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Affiliation(s)
- Tomáš Neveselý
- Organisch-Chemisches InstitutWestfälische Wilhelms-Universität MünsterCorrensstrasse 3648149MünsterGermany
| | - John J. Molloy
- Organisch-Chemisches InstitutWestfälische Wilhelms-Universität MünsterCorrensstrasse 3648149MünsterGermany
- Current address: Max Planck Institute of Colloids and InterfacesAm Mühlenberg 114476PotsdamGermany
| | - Calum McLaughlin
- Organisch-Chemisches InstitutWestfälische Wilhelms-Universität MünsterCorrensstrasse 3648149MünsterGermany
| | - Linda Brüss
- Organisch-Chemisches InstitutWestfälische Wilhelms-Universität MünsterCorrensstrasse 3648149MünsterGermany
| | - Constantin G. Daniliuc
- Organisch-Chemisches InstitutWestfälische Wilhelms-Universität MünsterCorrensstrasse 3648149MünsterGermany
| | - Ryan Gilmour
- Organisch-Chemisches InstitutWestfälische Wilhelms-Universität MünsterCorrensstrasse 3648149MünsterGermany
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76
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Louvel D, Souibgui A, Taponard A, Rouillon J, ben Mosbah M, Moussaoui Y, Pilet G, Khrouz L, Monnereau C, Vantourout JC, Tlili A. Tailoring the Reactivity of the Langlois Reagent and Styrenes with Cyanoarenes Organophotocatalysts under Visible‐Light. Adv Synth Catal 2022. [DOI: 10.1002/adsc.202100828] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Dan Louvel
- Institute of Chemistry and Biochemistry (ICBMS–UMR CNRS 5246) Univ Lyon Université Lyon 1, CNRS, CPE-Lyon, INSA 43 Bd du 11 Novembre 1918 69622 Villeurbanne France
| | - Amel Souibgui
- Institute of Chemistry and Biochemistry (ICBMS–UMR CNRS 5246) Univ Lyon Université Lyon 1, CNRS, CPE-Lyon, INSA 43 Bd du 11 Novembre 1918 69622 Villeurbanne France
- Organic Chemistry Laboratory (LR17ES08) Faculty of Sciences of Sfax University of Sfax Sfax 3029 Tunisia
- Faculty of Sciences of Gafsa University of Gafsa Gafsa 2112 Tunisia
| | - Alexis Taponard
- Institute of Chemistry and Biochemistry (ICBMS–UMR CNRS 5246) Univ Lyon Université Lyon 1, CNRS, CPE-Lyon, INSA 43 Bd du 11 Novembre 1918 69622 Villeurbanne France
| | - Jean Rouillon
- Univ Lyon ENS de Lyon, CNRS UMR 5182, Université Lyon 1, Laboratoire de Chimie F-69342 Lyon France
| | - Mongi ben Mosbah
- Organic Chemistry Laboratory (LR17ES08) Faculty of Sciences of Sfax University of Sfax Sfax 3029 Tunisia
- Laboratory for the Application of Materials to the Environment, Water and Energy (LR21ES15) Faculty of Sciences of Gafsa University of Gafsa Gafsa 2112 Tunisia
| | - Younes Moussaoui
- Organic Chemistry Laboratory (LR17ES08) Faculty of Sciences of Sfax University of Sfax Sfax 3029 Tunisia
- Faculty of Sciences of Gafsa University of Gafsa Gafsa 2112 Tunisia
| | - Guillaume Pilet
- Univ Lyon Université Lyon 1, Laboratoire des Multimatériaux et Interfaces (LMI), UMR 5615, CNRS, Bâtiment Chevreul Avenue du 11 novembre 1918 69622 Villeurbanne cedex France
| | - Lhoussain Khrouz
- Univ Lyon ENS de Lyon, CNRS UMR 5182, Université Lyon 1, Laboratoire de Chimie F-69342 Lyon France
| | - Cyrille Monnereau
- Univ Lyon ENS de Lyon, CNRS UMR 5182, Université Lyon 1, Laboratoire de Chimie F-69342 Lyon France
| | - Julien C. Vantourout
- Institute of Chemistry and Biochemistry (ICBMS–UMR CNRS 5246) Univ Lyon Université Lyon 1, CNRS, CPE-Lyon, INSA 43 Bd du 11 Novembre 1918 69622 Villeurbanne France
| | - Anis Tlili
- Institute of Chemistry and Biochemistry (ICBMS–UMR CNRS 5246) Univ Lyon Université Lyon 1, CNRS, CPE-Lyon, INSA 43 Bd du 11 Novembre 1918 69622 Villeurbanne France
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77
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Bai N, Wang X, Wang Z, Liu F, Rong ZQ. Redox-neutral remote amidation of alkenyl alcohols via long-range isomerization/transformation. Org Chem Front 2022. [DOI: 10.1039/d2qo01143c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A facile and straightforward approach for the construction of amides via redox-neutral Ru-catalyzed cross-coupling reaction of long-range alkenyl alcohols with amines to realize remote site-selective functionalization has been developed.
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Affiliation(s)
- Na Bai
- Frontiers Science Center for Flexible Electronics (FSCFE), Shaanxi Institute of Flexible Electronics (SIFE) & Shaanxi Institute of Biomedical Materials and Engineering (SIBME), Northwestern Polytechnical University (NPU), 127 West Youyi Road, Xi'an 710072, China
| | - Xuchao Wang
- Frontiers Science Center for Flexible Electronics (FSCFE), Shaanxi Institute of Flexible Electronics (SIFE) & Shaanxi Institute of Biomedical Materials and Engineering (SIBME), Northwestern Polytechnical University (NPU), 127 West Youyi Road, Xi'an 710072, China
| | - Zhenchao Wang
- College of Pharmacy, Guizhou University, Guiyang, Guizhou 550025, China
| | - Feipeng Liu
- Frontiers Science Center for Flexible Electronics (FSCFE), Shaanxi Institute of Flexible Electronics (SIFE) & Shaanxi Institute of Biomedical Materials and Engineering (SIBME), Northwestern Polytechnical University (NPU), 127 West Youyi Road, Xi'an 710072, China
| | - Zi-Qiang Rong
- Frontiers Science Center for Flexible Electronics (FSCFE), Shaanxi Institute of Flexible Electronics (SIFE) & Shaanxi Institute of Biomedical Materials and Engineering (SIBME), Northwestern Polytechnical University (NPU), 127 West Youyi Road, Xi'an 710072, China
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78
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Chérif SE, Ghosh A, Chelli S, Dixon IM, Kraiem J, Lakhdar S. Merging Grubbs second-generation catalyst with photocatalysis enables Z-selective metathesis of olefins: scope, limitations, and mechanism. Chem Sci 2022; 13:12065-12070. [PMID: 36349104 PMCID: PMC9600307 DOI: 10.1039/d2sc03961c] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2022] [Accepted: 09/13/2022] [Indexed: 11/28/2022] Open
Abstract
Olefin cross-metathesis is a cornerstone reaction in organic synthesis where stereoselectivity is typically governed by the structure of the catalyst. In this work, we show that merging Grubbs second generation catalyst, a classical E-selective catalyst, with a readily available photocatalyst, enables the exclusive formation of the contra-thermodynamic Z-isomer. The scope and limitations of this unprecedented approach are discussed based on both computational and experimental mechanistic data. Light is magic! The combination of Grubbs second generation catalyst, a well-known catalyst for E-selective olefin metathesis, with a photosensitizer enables efficient access to the contra-thermodynamic Z-isomers.![]()
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Affiliation(s)
- Saïf Eddine Chérif
- CNRS, Université Paul Sabatier, Laboratoire Hétérochimie Fondamentale et Appliquée (LHFA, UMR5069), 118 Route de Narbonne, 31062 Cedex 09 Toulouse, France
- Laboratoire de Développement Chimique, Galénique et Pharmacologique des Médicaments, Faculté de Pharmacie de Monastir, Université de Monastir, Rue Avicenne, 5000 Monastir, Tunisia
| | - Avisek Ghosh
- CNRS, Université Paul Sabatier, Laboratoire Hétérochimie Fondamentale et Appliquée (LHFA, UMR5069), 118 Route de Narbonne, 31062 Cedex 09 Toulouse, France
| | - Saloua Chelli
- CNRS, Université Paul Sabatier, Laboratoire Hétérochimie Fondamentale et Appliquée (LHFA, UMR5069), 118 Route de Narbonne, 31062 Cedex 09 Toulouse, France
| | - Isabelle M. Dixon
- Université de Toulouse, CNRS, Université Paul Sabatier, Laboratoire de Chimie et Physique Quantiques, 118 route de Narbonne, 31062 Toulouse, France
| | - Jamil Kraiem
- Laboratoire de Développement Chimique, Galénique et Pharmacologique des Médicaments, Faculté de Pharmacie de Monastir, Université de Monastir, Rue Avicenne, 5000 Monastir, Tunisia
| | - Sami Lakhdar
- CNRS, Université Paul Sabatier, Laboratoire Hétérochimie Fondamentale et Appliquée (LHFA, UMR5069), 118 Route de Narbonne, 31062 Cedex 09 Toulouse, France
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79
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He W, Tashiro S, Shionoya M. Highly selective acid-catalyzed olefin isomerization of limonene to terpinolene by kinetic suppression of the overreactions in a confined space of porous metal-macrocycle framework. Chem Sci 2022; 13:8752-8758. [PMID: 35975147 PMCID: PMC9350587 DOI: 10.1039/d2sc01561g] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2022] [Accepted: 06/02/2022] [Indexed: 11/21/2022] Open
Abstract
Natural enzymes control the intrinsic reactivity of chemical reactions in the natural environment, giving only the necessary products. In recent years, challenging research on the reactivity control of terpenes with structural diversity using artificial host compounds that mimic such enzymatic reactions has been actively pursued. A typical example is the acid-catalyzed olefin isomerization of (+)-limonene, which generally gives a complex mixture due to over-isomerization to thermodynamically favored isomers. Herein we report a highly controlled conversion of (+)-limonene by kinetic suppression of over-isomerization in a confined space of a porous metal–macrocycle framework (MMF) equipped with a Brønsted acid catalyst. The terminal double bond of (+)-limonene migrated to one neighbor, preferentially producing terpinolene. This reaction selectivity was in stark contrast to the homogeneous acid-catalyzed reaction in bulk solution and to previously reported catalytic reactions. X-ray structural analysis and examination of the reaction with adsorption inhibitors suggest that the reactive substrates may bind non-covalently to specific positions in the confined space of the MMF, thereby inhibiting the over-isomerization reaction. The nanospaces of the MMF with substrate binding ability are expected to enable highly selective synthesis of a variety of terpene compounds. A porous metal–macrocycle framework (MMF) equipped with a Brønsted acid catalyst in nanochannels enables highly selective isomerization of limonene to terpinolene by kinetically suppressing over-isomerization at confined acid sites.![]()
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Affiliation(s)
- Wei He
- Department of Chemistry, Graduate School of Science, The University of Tokyo Tokyo 113-0033 Japan
| | - Shohei Tashiro
- Department of Chemistry, Graduate School of Science, The University of Tokyo Tokyo 113-0033 Japan
| | - Mitsuhiko Shionoya
- Department of Chemistry, Graduate School of Science, The University of Tokyo Tokyo 113-0033 Japan
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80
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Kalaitzakis D, Kampouropoulos I, Sofiadis M, Montagnon T, Vassilikogiannakis G. Access to high value sp 3-rich frameworks using photocatalyzed [2+2]-cycloadditions of γ-alkylidene-γ-lactams. Chem Commun (Camb) 2022; 58:8085-8088. [DOI: 10.1039/d2cc03009h] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
By harnessing an energy transfer process, new photocatalyzed [2+2]-cycloadditions occurring between γ-alkylidene-γ-lactams and unsaturated substrates have been developed. The reaction mode is particularly powerful because it leads to the formation...
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81
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Martínez-Carrión A, Romero-Navarro A, Núñez-Rico JL, Gutiérrez A, Grabulosa A, Vidal-Ferran A. Valorisation of mixtures of linear alkenes using cobalt-mediated isomerisation and hydroformylation chemistries. Catal Sci Technol 2022. [DOI: 10.1039/d1cy01754c] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Active catalysts derived from cobalt and the Xantphos ligand were synthesised, characterised and tested in the hydroformylation of pure linear alkenes or their mixtures.
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Affiliation(s)
- Alicia Martínez-Carrión
- Institute of Chemical Research of Catalonia (ICIQ), Av. Països Catalans 16, 43007 Tarragona, Spain
| | - Andrés Romero-Navarro
- Institute of Chemical Research of Catalonia (ICIQ), Av. Països Catalans 16, 43007 Tarragona, Spain
- Department of Inorganic and Organic Chemistry, University of Barcelona, C. Martí i Franquès 1-11, 08028 Barcelona, Spain
| | - José Luis Núñez-Rico
- Department of Inorganic and Organic Chemistry, University of Barcelona, C. Martí i Franquès 1-11, 08028 Barcelona, Spain
- Institut de Nanociència i Nanotecnologia (IN2UB), Universitat de Barcelona, 08028 Barcelona, Spain
| | - Albert Gutiérrez
- Department of Inorganic and Organic Chemistry, University of Barcelona, C. Martí i Franquès 1-11, 08028 Barcelona, Spain
- Institut de Nanociència i Nanotecnologia (IN2UB), Universitat de Barcelona, 08028 Barcelona, Spain
| | - Arnald Grabulosa
- Department of Inorganic and Organic Chemistry, University of Barcelona, C. Martí i Franquès 1-11, 08028 Barcelona, Spain
- Institut de Nanociència i Nanotecnologia (IN2UB), Universitat de Barcelona, 08028 Barcelona, Spain
| | - Anton Vidal-Ferran
- Department of Inorganic and Organic Chemistry, University of Barcelona, C. Martí i Franquès 1-11, 08028 Barcelona, Spain
- Institut de Nanociència i Nanotecnologia (IN2UB), Universitat de Barcelona, 08028 Barcelona, Spain
- ICREA, Pg. Lluís Companys 23, 08010 Barcelona, Spain
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82
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Occhialini G, Palani V, Wendlandt AE. Catalytic, contra-Thermodynamic Positional Alkene Isomerization. J Am Chem Soc 2021; 144:145-152. [PMID: 34968044 DOI: 10.1021/jacs.1c12043] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
The positional isomerization of C═C double bonds is a powerful strategy for the interconversion of alkene regioisomers. However, existing methods provide access to thermodynamically more stable isomers from less stable starting materials. Here, we report the discovery of a dual catalyst system that promotes contra-thermodynamic positional alkene isomerization under photochemical irradiation, providing access to terminal alkene isomers directly from conjugated, internal alkene starting materials. The utility of the method is demonstrated in the deconjugation of diverse electron-rich/electron-poor alkenes and through strategic application to natural product synthesis. Mechanistic studies are consistent with a regiospecific bimolecular homolytic substitution (SH2') mechanism proceeding through an allyl-cobaloxime intermediate.
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Affiliation(s)
- Gino Occhialini
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Vignesh Palani
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Alison E Wendlandt
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
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83
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Abstract
A light-driven method for the contra-thermodynamic positional isomerization of olefins is described. In this work, stepwise PCET activation of a more substituted and more thermodynamically stable olefin substrate is mediated by an excited-state oxidant and a Brønsted base to afford an allylic radical that is captured by a Cr(II) cocatalyst to furnish an allylchromium(III) intermediate. In situ protodemetalation of this allylchromium complex by methanol is highly regioselective and affords an isomerized and less thermodynamically stable alkene product. The higher oxidation potential of the less substituted olefin isomer renders it inert to further oxidation by the excited-state oxidant, enabling it to accumulate in solution over the course of the reaction. A broad range of isopropylidene substrates are accommodated, including enol ethers, enamides, styrenes, 1,3-dienes, and tetrasubstituted alkyl olefins. Mechanistic investigations of the protodemetalation step are also presented.
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Affiliation(s)
- Kuo Zhao
- Department of Chemistry, Princeton University, Princeton, New Jersey 08544, United States
| | - Robert R Knowles
- Department of Chemistry, Princeton University, Princeton, New Jersey 08544, United States
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84
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Zhang Q, Wang S, Zhang Q, Xiong T, Zhang Q. Radical Addition-Triggered Remote Migratory Isomerization of Unactivated Alkenes to Difluoromethylene-Containing Alkenes Enabled by Bimetallic Catalysis. ACS Catal 2021. [DOI: 10.1021/acscatal.1c05073] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Qiao Zhang
- Key Laboratory of Functional Organic Molecule Design & Synthesis of Jilin Province, Department of Chemistry, Northeast Normal University, 5268 Renmin Rd., Changchun, Jilin 130024, China
| | - Simin Wang
- Key Laboratory of Functional Organic Molecule Design & Synthesis of Jilin Province, Department of Chemistry, Northeast Normal University, 5268 Renmin Rd., Changchun, Jilin 130024, China
| | - Qian Zhang
- Key Laboratory of Functional Organic Molecule Design & Synthesis of Jilin Province, Department of Chemistry, Northeast Normal University, 5268 Renmin Rd., Changchun, Jilin 130024, China
| | - Tao Xiong
- Key Laboratory of Functional Organic Molecule Design & Synthesis of Jilin Province, Department of Chemistry, Northeast Normal University, 5268 Renmin Rd., Changchun, Jilin 130024, China
| | - Qian Zhang
- Key Laboratory of Functional Organic Molecule Design & Synthesis of Jilin Province, Department of Chemistry, Northeast Normal University, 5268 Renmin Rd., Changchun, Jilin 130024, China
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences 345 Lingling Lu, Shanghai 200032, China
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85
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Liu X, Rong X, Liu S, Lan Y, Liu Q. Cobalt-Catalyzed Desymmetric Isomerization of Exocyclic Olefins. J Am Chem Soc 2021; 143:20633-20639. [PMID: 34870975 DOI: 10.1021/jacs.1c11343] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
Chiral cyclic olefins, 1-methylcyclohexenes, are versatile building blocks for the synthesis of pharmaceuticals and natural products. Despite the prevalence of these structural motifs, the development of efficient synthetic methods remains an unmet challenge. Herein we report a novel desymmetric isomerization of exocyclic olefins using a series of newly designed chiral cobalt catalysts, which enables a straightforward construction of chiral 1-methylcyclohexenes with diversified functionalities. The synthetic utility of this methodology is highlighted by a concise and enantioselective synthesis of a natural product, β-bisabolene. The versatility of the reaction products is further demonstrated by multifarious derivatizations.
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Affiliation(s)
- Xufang Liu
- Center of Basic Molecular Science (CBMS), Department of Chemistry, Tsinghua University, Beijing 100084, People's Republic of China
| | - Xianle Rong
- Center of Basic Molecular Science (CBMS), Department of Chemistry, Tsinghua University, Beijing 100084, People's Republic of China
| | - Shihan Liu
- School of Chemistry and Chemical Engineering, Chongqing Key Laboratory of Theoretical and Computational Chemistry, Chongqing University, Chongqing 400030, People's Republic of China
| | - Yu Lan
- School of Chemistry and Chemical Engineering, Chongqing Key Laboratory of Theoretical and Computational Chemistry, Chongqing University, Chongqing 400030, People's Republic of China
| | - Qiang Liu
- Center of Basic Molecular Science (CBMS), Department of Chemistry, Tsinghua University, Beijing 100084, People's Republic of China
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86
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Segura L, Massad I, Ogasawara M, Marek I. Stereodivergent Access to Trisubstituted Alkenylboronate Esters through Alkene Isomerization. Org Lett 2021; 23:9194-9198. [PMID: 34766777 PMCID: PMC8650100 DOI: 10.1021/acs.orglett.1c03513] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
![]()
We report an efficient
method for the preparation of synthetically
valuable trisubstituted alkenylboronate esters through alkene
isomerization of their readily available 1,1-disubstituted regioisomeric
counterparts. Either stereoisomer of the target alkenylboronate
motif can be obtained at will from the same starting material by employing
different isomerization catalysts.
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Affiliation(s)
- Lucas Segura
- Schulich Faculty of Chemistry, Technion - Israel Institute of Technology, Haifa 3200009, Israel
| | - Itai Massad
- Schulich Faculty of Chemistry, Technion - Israel Institute of Technology, Haifa 3200009, Israel
| | - Masamichi Ogasawara
- Department of Natural Science, Graduate School of Science and Technology, Tokushima University, Tokushima 770-8506, Japan
| | - Ilan Marek
- Schulich Faculty of Chemistry, Technion - Israel Institute of Technology, Haifa 3200009, Israel
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87
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Koller S, Klein P, Reinhardt K, Ochmann L, Seitz A, Jandl C, Pöthig A, Hintermann L. New Access Routes to Privileged and Chiral Ligands for Transition‐Metal Catalyzed Hydrogen Autotransfer (Borrowing Hydrogen), Dehydrogenative Condensation, and Alkene Isomerization Reactions. Helv Chim Acta 2021. [DOI: 10.1002/hlca.202100175] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Sebastian Koller
- Department Chemie Technische Universität München Lichtenbergstraße 4 DE-85748 Garching bei München Germany
- TUM Catalysis Research Center Ernst-Otto-Fischer-Straße 1 DE-85748 Garching bei München Germany
| | - Philippe Klein
- Department Chemie Technische Universität München Lichtenbergstraße 4 DE-85748 Garching bei München Germany
- TUM Catalysis Research Center Ernst-Otto-Fischer-Straße 1 DE-85748 Garching bei München Germany
| | - Katja Reinhardt
- Department Chemie Technische Universität München Lichtenbergstraße 4 DE-85748 Garching bei München Germany
- TUM Catalysis Research Center Ernst-Otto-Fischer-Straße 1 DE-85748 Garching bei München Germany
| | - Lukas Ochmann
- Department Chemie Technische Universität München Lichtenbergstraße 4 DE-85748 Garching bei München Germany
- TUM Catalysis Research Center Ernst-Otto-Fischer-Straße 1 DE-85748 Garching bei München Germany
| | - Antonia Seitz
- Department Chemie Technische Universität München Lichtenbergstraße 4 DE-85748 Garching bei München Germany
- TUM Catalysis Research Center Ernst-Otto-Fischer-Straße 1 DE-85748 Garching bei München Germany
| | - Christian Jandl
- Department Chemie Technische Universität München Lichtenbergstraße 4 DE-85748 Garching bei München Germany
- TUM Catalysis Research Center Ernst-Otto-Fischer-Straße 1 DE-85748 Garching bei München Germany
| | - Alexander Pöthig
- Department Chemie Technische Universität München Lichtenbergstraße 4 DE-85748 Garching bei München Germany
- TUM Catalysis Research Center Ernst-Otto-Fischer-Straße 1 DE-85748 Garching bei München Germany
| | - Lukas Hintermann
- Department Chemie Technische Universität München Lichtenbergstraße 4 DE-85748 Garching bei München Germany
- TUM Catalysis Research Center Ernst-Otto-Fischer-Straße 1 DE-85748 Garching bei München Germany
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88
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Zhang Y, Xia M, Li M, Ping Q, Yuan Z, Liu X, Yin H, Huang S, Rao Y. Energy-Transfer-Mediated Photocatalysis by a Bioinspired Organic Perylenephotosensitizer HiBRCP. J Org Chem 2021; 86:15284-15297. [PMID: 34647457 DOI: 10.1021/acs.joc.1c01876] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Energy transfer plays a special role in photocatalysis by utilizing the potential energy of the excited state through indirect excitation, in which a photosensitizer determines the thermodynamic feasibility of the reaction. Bioinspired by the energy-transfer ability of natural product cercosporin, here we developed a green and highly efficient organic photosensitizer HiBRCP (hexaisobutyryl reduced cercosporin) through structural modification of cercosporin. After structural manipulation, its triplet energy was greatly improved, and then, it could markedly promote the efficient geometrical isomerization of alkenes from the E-isomer to the Z-isomer. Moreover, it was also effective for energy-transfer-mediated organometallic catalysis, which allowed realization of the cross-coupling of aryl bromides and carboxylic acids through efficient energy transfer from HiBRCP to nickel complexes. Thus, the study on the relationship between structural manipulation and their photophysical properties provided guidance for further modification of cercosporin, which could be applied to more meaningful and challenging energy-transfer reactions.
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Affiliation(s)
- Yan Zhang
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Pharmaceutical Science, Jiangnan University, Wuxi 214122, P. R. China
| | - Mingze Xia
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Pharmaceutical Science, Jiangnan University, Wuxi 214122, P. R. China
| | - Min Li
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, P. R. China
| | - Qian Ping
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Pharmaceutical Science, Jiangnan University, Wuxi 214122, P. R. China
| | - Zhenbo Yuan
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, P. R. China
| | - Xuanzhong Liu
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, P. R. China
| | - Huimin Yin
- College of Chemistry, Fuzhou University, Fuzhou 350108, P. R. China
| | - Shuping Huang
- College of Chemistry, Fuzhou University, Fuzhou 350108, P. R. China
| | - Yijian Rao
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, P. R. China
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89
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Abstract
We here present a generally applicable cobalt-catalyzed remote hydroboration of alkenyl amines, providing a practical strategy for the preparation of borylamines and aminoalcohols. This method shows broad substrate scope and good functional group tolerance, tolerating a series of alkenyl amines, including alkyl-alkyl amines, alkyl-aryl amines, aryl-aryl amines, and amides. Of note, this protocol is also compatible with a variety of natural products and drug derivatives. Preliminary mechanistic studies suggest that this transformation involves an iterative chain walking and hydroboration sequence.
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Affiliation(s)
- Yaqin Lei
- State Key Laboratory of Chemo/Biosensing and Chemometrics, Advanced Catalytic Engineering Research Center of the Ministry of Education, College of Chemistry and Chemical Engineering, Hunan University, Changsha, Hunan 410082, P. R. China
| | - Jiaxin Huang
- State Key Laboratory of Chemo/Biosensing and Chemometrics, Advanced Catalytic Engineering Research Center of the Ministry of Education, College of Chemistry and Chemical Engineering, Hunan University, Changsha, Hunan 410082, P. R. China
| | - Wanxiang Zhao
- State Key Laboratory of Chemo/Biosensing and Chemometrics, Advanced Catalytic Engineering Research Center of the Ministry of Education, College of Chemistry and Chemical Engineering, Hunan University, Changsha, Hunan 410082, P. R. China
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90
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Gao PP, Yan DM, Bi MH, Jiang M, Xiao WJ, Chen JR. Alkene Synthesis by Photo-Wolff-Kischner Reaction of Sulfur Ylides and N-Tosylhydrazones. Chemistry 2021; 27:14195-14201. [PMID: 34374474 DOI: 10.1002/chem.202102671] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2021] [Indexed: 12/17/2022]
Abstract
A visible-light-driven and room temperature photo-Wolff-Kischner reaction of sulfur ylides and N-tosylhydrazones has been developed for the first time to provide modular access to alkene synthesis. The high functional group tolerance and broad substrate scope were demonstrated by more than 60 examples. Both E- and Z-olefinic stereochemistry in the products could be controlled with excellent stereoselectivity. A series of mechanistic studies support that the reaction should proceed through a radical-carbanion crossover pathway, specifically involving addition of photo-generated sulfur ylide radical cations to N-tosylhydrazones to form carbanions and subsequent Wolff-Kischner process.
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Affiliation(s)
- Pan-Pan Gao
- CCNU-uOttawa Joint Research Centre, Hubei International Scientific and Technological Cooperation Base of Pesticide and Green Synthesis, Key Laboratory of Pesticides & Chemical Biology Ministry of Education, College of Chemistry, Central China Normal University, 152 Luoyu Road, Wuhan, Hubei, 430079, P. R. China
| | - Dong-Mei Yan
- CCNU-uOttawa Joint Research Centre, Hubei International Scientific and Technological Cooperation Base of Pesticide and Green Synthesis, Key Laboratory of Pesticides & Chemical Biology Ministry of Education, College of Chemistry, Central China Normal University, 152 Luoyu Road, Wuhan, Hubei, 430079, P. R. China
| | - Ming-Hang Bi
- CCNU-uOttawa Joint Research Centre, Hubei International Scientific and Technological Cooperation Base of Pesticide and Green Synthesis, Key Laboratory of Pesticides & Chemical Biology Ministry of Education, College of Chemistry, Central China Normal University, 152 Luoyu Road, Wuhan, Hubei, 430079, P. R. China
| | - Min Jiang
- College of Materials, Chemistry and Chemical Engineering, Hangzhou Normal University, 2318 Yuhangtang Road, Hangzhou, 310036, P. R. China
| | - Wen-Jing Xiao
- CCNU-uOttawa Joint Research Centre, Hubei International Scientific and Technological Cooperation Base of Pesticide and Green Synthesis, Key Laboratory of Pesticides & Chemical Biology Ministry of Education, College of Chemistry, Central China Normal University, 152 Luoyu Road, Wuhan, Hubei, 430079, P. R. China
| | - Jia-Rong Chen
- CCNU-uOttawa Joint Research Centre, Hubei International Scientific and Technological Cooperation Base of Pesticide and Green Synthesis, Key Laboratory of Pesticides & Chemical Biology Ministry of Education, College of Chemistry, Central China Normal University, 152 Luoyu Road, Wuhan, Hubei, 430079, P. R. China.,School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan, 453007, P. R. China
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91
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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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92
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Zhou MJ, Zhang L, Liu G, Xu C, Huang Z. Site-Selective Acceptorless Dehydrogenation of Aliphatics Enabled by Organophotoredox/Cobalt Dual Catalysis. J Am Chem Soc 2021; 143:16470-16485. [PMID: 34592106 DOI: 10.1021/jacs.1c05479] [Citation(s) in RCA: 49] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The value of catalytic dehydrogenation of aliphatics (CDA) in organic synthesis has remained largely underexplored. Known homogeneous CDA systems often require the use of sacrificial hydrogen acceptors (or oxidants), precious metal catalysts, and harsh reaction conditions, thus limiting most existing methods to dehydrogenation of non- or low-functionalized alkanes. Here we describe a visible-light-driven, dual-catalyst system consisting of inexpensive organophotoredox and base-metal catalysts for room-temperature, acceptorless-CDA (Al-CDA). Initiated by photoexited 2-chloroanthraquinone, the process involves H atom transfer (HAT) of aliphatics to form alkyl radicals, which then react with cobaloxime to produce olefins and H2. This operationally simple method enables direct dehydrogenation of readily available chemical feedstocks to diversely functionalized olefins. For example, we demonstrate, for the first time, the oxidant-free desaturation of thioethers and amides to alkenyl sulfides and enamides, respectively. Moreover, the system's exceptional site selectivity and functional group tolerance are illustrated by late-stage dehydrogenation and synthesis of 14 biologically relevant molecules and pharmaceutical ingredients. Mechanistic studies have revealed a dual HAT process and provided insights into the origin of reactivity and site selectivity.
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Affiliation(s)
- Min-Jie Zhou
- Shenzhen Grubbs Institute and Department of Chemistry, Southern University of Science and Technology, Shenzhen 518055, China.,The State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
| | - Lei Zhang
- School of Chemistry and Material Sciences, Hangzhou Institute of Advanced Study, University of Chinese Academy of Sciences, 1 Sub-lane Xiangshan, Hangzhou 310024, China
| | - Guixia Liu
- The State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
| | - Chen Xu
- Shenzhen Grubbs Institute and Department of Chemistry, Southern University of Science and Technology, Shenzhen 518055, China
| | - Zheng Huang
- Shenzhen Grubbs Institute and Department of Chemistry, Southern University of Science and Technology, Shenzhen 518055, China.,The State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China.,School of Chemistry and Material Sciences, Hangzhou Institute of Advanced Study, University of Chinese Academy of Sciences, 1 Sub-lane Xiangshan, Hangzhou 310024, China
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93
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Brégent T, Bouillon JP, Poisson T. Photocatalyzed E→Z Contra-thermodynamic Isomerization of Vinyl Boronates with Binaphthol. Chemistry 2021; 27:13966-13970. [PMID: 34411357 DOI: 10.1002/chem.202102536] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2021] [Indexed: 11/11/2022]
Abstract
The photocatalytic contra-thermodynamic E→Z isomerization of vinyl boronates by using a binaphthol catalyst is disclosed. The reaction, based on the transient formation of a suitable chromophore with a BINOL derivative as the catalyst, allowed geometrical isomerization in good-to-excellent Z/E ratio and excellent-to-quantitative yields. The mechanism of this E→Z contra-thermodynamic isomerization was studied, and the formation of a transient chromophore species is suggested.
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Affiliation(s)
- Thibaud Brégent
- Normandie Université, INSA Rouen, UNIROUEN, CNRS, COBRA (UMR 6014), 76000, Rouen, France
| | - Jean-Philippe Bouillon
- Normandie Université, INSA Rouen, UNIROUEN, CNRS, COBRA (UMR 6014), 76000, Rouen, France
| | - Thomas Poisson
- Normandie Université, INSA Rouen, UNIROUEN, CNRS, COBRA (UMR 6014), 76000, Rouen, France.,Institut Universitaire de France, 1 rue Descartes, 75231, Paris, France
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94
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Bera M, Lee DS, Cho EJ. Advances in N-centered intermediates by energy transfer photocatalysis. TRENDS IN CHEMISTRY 2021. [DOI: 10.1016/j.trechm.2021.06.001] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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95
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Wang L, Shi F, Qi C, Xu W, Xiong W, Kang B, Jiang H. Stereodivergent synthesis of β-iodoenol carbamates with CO 2 via photocatalysis. Chem Sci 2021; 12:11821-11830. [PMID: 34659721 PMCID: PMC8442729 DOI: 10.1039/d1sc03366b] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2021] [Accepted: 08/02/2021] [Indexed: 01/24/2023] Open
Abstract
Photocatalytic conversion of carbon dioxide (CO2) into value-added chemicals is of great significance from the viewpoint of green chemistry and sustainable development. Here, we report a stereodivergent synthesis of β-iodoenol carbamates through a photocatalytic three-component coupling of ethynylbenziodoxolones, CO2 and amines. By choosing appropriate photocatalysts, both Z- and E-isomers of β-iodoenol carbamates, which are difficult to prepare using existing methods, can be obtained stereoselectively. This transformation featured mild conditions, excellent functional group compatibility and broad substrate scope. The potential synthetic utility of this protocol was demonstrated by late-stage modification of bioactive molecules and pharmaceuticals as well as by elaborating the products to access a wide range of valuable compounds. More importantly, this strategy could provide a general and practical method for stereodivergent construction of trisubstituted alkenes such as triarylalkenes, which represents a fascinating challenge in the field of organic chemistry research. A series of mechanism investigations revealed that the transformation might proceed through a charge-transfer complex which might be formed through a halogen bond.
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Affiliation(s)
- Lu Wang
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology Guangzhou 510640 P. R. China
| | - Fuxing Shi
- State Key Laboratory of Chemical Resource Engineering, Institute of Computational Chemistry, College of Chemistry, Beijing University of Chemical Technology Beijing 100029 P. R. China
| | - Chaorong Qi
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology Guangzhou 510640 P. R. China
| | - Wenjie Xu
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology Guangzhou 510640 P. R. China
| | - Wenfang Xiong
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology Guangzhou 510640 P. R. China
| | - Bangxiong Kang
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology Guangzhou 510640 P. R. China
| | - Huanfeng Jiang
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology Guangzhou 510640 P. R. China
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96
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Tian X, Karl TA, Reiter S, Yakubov S, de Vivie‐Riedle R, König B, Barham JP. Electro-mediated PhotoRedox Catalysis for Selective C(sp 3 )-O Cleavages of Phosphinated Alcohols to Carbanions. Angew Chem Int Ed Engl 2021; 60:20817-20825. [PMID: 34165861 PMCID: PMC8518744 DOI: 10.1002/anie.202105895] [Citation(s) in RCA: 59] [Impact Index Per Article: 19.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2021] [Revised: 06/21/2021] [Indexed: 12/13/2022]
Abstract
We report a novel example of electro-mediated photoredox catalysis (e-PRC) in the reductive cleavage of C(sp3 )-O bonds of phosphinated alcohols to alkyl carbanions. As well as deoxygenations, olefinations are reported which are E-selective and can be made Z-selective in a tandem reduction/photosensitization process where both steps are photoelectrochemically promoted. Spectroscopy, computation, and catalyst structural variations reveal that our new naphthalene monoimide-type catalyst allows for an intimate dispersive precomplexation of its radical anion form with the phosphinate substrate, facilitating a reactivity-determining C(sp3 )-O cleavage. Surprisingly and in contrast to previously reported photoexcited radical anion chemistries, our conditions tolerate aryl chlorides/bromides and do not give rise to Birch-type reductions.
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Affiliation(s)
- Xianhai Tian
- Institute of Organic ChemistryUniversity of RegensburgUniversitätsstr. 3193053RegensburgGermany
| | - Tobias A. Karl
- Institute of Organic ChemistryUniversity of RegensburgUniversitätsstr. 3193053RegensburgGermany
| | | | - Shahboz Yakubov
- Institute of Organic ChemistryUniversity of RegensburgUniversitätsstr. 3193053RegensburgGermany
| | | | - Burkhard König
- Institute of Organic ChemistryUniversity of RegensburgUniversitätsstr. 3193053RegensburgGermany
| | - Joshua P. Barham
- Institute of Organic ChemistryUniversity of RegensburgUniversitätsstr. 3193053RegensburgGermany
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97
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Morack T, Onneken C, Nakakohara H, Mück-Lichtenfeld C, Gilmour R. Enantiodivergent Prenylation via Deconjugative Isomerization. ACS Catal 2021. [DOI: 10.1021/acscatal.1c03089] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Tobias Morack
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität Münster, Corrensstraße 36, 48149 Münster, Germany
| | - Carina Onneken
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität Münster, Corrensstraße 36, 48149 Münster, Germany
| | - Hiroshi Nakakohara
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität Münster, Corrensstraße 36, 48149 Münster, Germany
| | - Christian Mück-Lichtenfeld
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität Münster, Corrensstraße 36, 48149 Münster, Germany
| | - Ryan Gilmour
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität Münster, Corrensstraße 36, 48149 Münster, Germany
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98
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Tlili A, Lakhdar S. Acridinium Salts and Cyanoarenes as Powerful Photocatalysts: Opportunities in Organic Synthesis. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202102262] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Anis Tlili
- Institute of Chemistry and Biochemistry (ICBMS-UMR CNRS 5246) Univ Lyon, Université Lyon 1 CNRS CPE-Lyon INSA 43 Bd du 11 Novembre 1918 69622 Villeurbanne France
| | - Sami Lakhdar
- CNRS/Université Toulouse III—Paul Sabatier Laboratoire Hétérochimie Fondamentale et Appliquée LHFA UMR 5069 118 Route de Narbonne 31062 Toulouse Cedex 09 France
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99
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Tlili A, Lakhdar S. Acridinium Salts and Cyanoarenes as Powerful Photocatalysts: Opportunities in Organic Synthesis. Angew Chem Int Ed Engl 2021; 60:19526-19549. [PMID: 33881207 DOI: 10.1002/anie.202102262] [Citation(s) in RCA: 83] [Impact Index Per Article: 27.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2021] [Revised: 04/16/2021] [Indexed: 01/18/2023]
Abstract
The use of organic photocatalysts has revolutionized the field of photoredox catalysis, as it allows access to reactivities that were traditionally restricted to transition-metal photocatalysts. This Minireview reports recent developments in the use of acridinium ions and cyanoarene derivatives in organic synthesis. The activation of inert chemical bonds as well as the late-stage functionalization of biorelevant molecules are discussed, with a special focus on their mechanistic aspects.
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Affiliation(s)
- Anis Tlili
- Institute of Chemistry and Biochemistry (ICBMS-UMR CNRS 5246), Univ Lyon, Université Lyon 1, CNRS, CPE-Lyon, INSA, 43 Bd du 11 Novembre 1918, 69622, Villeurbanne, France
| | - Sami Lakhdar
- CNRS/Université Toulouse III-Paul Sabatier, Laboratoire Hétérochimie Fondamentale et Appliquée, LHFA UMR 5069, 118 Route de Narbonne, 31062, Toulouse Cedex 09, France
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100
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Neveselý T, Wienhold M, Molloy JJ, Gilmour R. Advances in the E → Z Isomerization of Alkenes Using Small Molecule Photocatalysts. Chem Rev 2021; 122:2650-2694. [PMID: 34449198 DOI: 10.1021/acs.chemrev.1c00324] [Citation(s) in RCA: 159] [Impact Index Per Article: 53.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Geometrical E → Z alkene isomerization is intimately entwined in the historical fabric of organic photochemistry and is enjoying a renaissance (Roth et al. Angew. Chem., Int. Ed. Engl. 1989 28, 1193-1207). This is a consequence of the fundamental stereochemical importance of Z-alkenes, juxtaposed with frustrations in thermal reactivity that are rooted in microscopic reversibility. Accessing excited state reactivity paradigms allow this latter obstacle to be circumnavigated by exploiting subtle differences in the photophysical behavior of the substrate and product chromophores: this provides a molecular basis for directionality. While direct irradiation is operationally simple, photosensitization via selective energy transfer enables augmentation of the alkene repertoire to include substrates that are not directly excited by photons. Through sustained innovation, an impressive portfolio of tailored small molecule catalysts with a range of triplet energies are now widely available to facilitate contra-thermodynamic and thermo-neutral isomerization reactions to generate Z-alkene fragments. This review is intended to serve as a practical guide covering the geometric isomerization of alkenes enabled by energy transfer catalysis from 2000 to 2020, and as a logical sequel to the excellent treatment by Dugave and Demange (Chem. Rev. 2003 103, 2475-2532). The mechanistic foundations underpinning isomerization selectivity are discussed together with induction models and rationales to explain the counterintuitive directionality of these processes in which very small energy differences distinguish substrate from product. Implications for subsequent stereospecific transformations, application in total synthesis, regioselective polyene isomerization, and spatiotemporal control of pre-existing alkene configuration in a broader sense are discussed.
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Affiliation(s)
- Tomáš Neveselý
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität Münster, Münster, Germany
| | - Max Wienhold
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität Münster, Münster, Germany
| | - John J Molloy
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität Münster, Münster, Germany
| | - Ryan Gilmour
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität Münster, Münster, Germany
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