1
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Li Y, Chen J, Ng JJW, Chiba S. Generation of Allylmagnesium Reagents by Hydromagnesiation of 2-Aryl-1,3-dienes. Angew Chem Int Ed Engl 2023; 62:e202217735. [PMID: 36637448 DOI: 10.1002/anie.202217735] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2022] [Revised: 01/13/2023] [Accepted: 01/13/2023] [Indexed: 01/14/2023]
Abstract
A protocol for the generation of allylmagnesium reagents from 2-aryl-1,3-dienes was developed using magnesium hydride (MgH2 ) that is generated in situ by solvothermal treatment of sodium hydride (NaH) and magnesium iodide (MgI2 ) in tetrahydrofuran (THF). Downstream functionalization of the resulting allylmagnesium reagents with carbonyl compounds or alkyl (pseudo)halides delivers branched products having an allylic quaternary carbon center, whereas that with chlorosilanes resulted in formation of linear allylsilanes in regio and stereoselective manners. Further derivatizations of the homoallylic alcohols and allylsilanes were also demonstrated.
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Affiliation(s)
- Yihang Li
- School of Chemistry, Chemical Engineering and Biotechnology, Nanyang Technological University, Singapore, 637371, Singapore
| | - Jiahua Chen
- School of Chemistry, Chemical Engineering and Biotechnology, Nanyang Technological University, Singapore, 637371, Singapore
| | - Jaslyn Jing Wen Ng
- School of Chemistry, Chemical Engineering and Biotechnology, Nanyang Technological University, Singapore, 637371, Singapore
| | - Shunsuke Chiba
- School of Chemistry, Chemical Engineering and Biotechnology, Nanyang Technological University, Singapore, 637371, Singapore
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2
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Karl TA, Seidl M, König B. Energy Harvesting: Synthetic Use of Recovered Energy in Electrochemical Late‐Stage Functionalization. ChemElectroChem 2023. [DOI: 10.1002/celc.202201097] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
- Tobias A. Karl
- Faculty of Chemistry and Pharmacy University of Regensburg 93040 Regensburg Germany
| | - Max Seidl
- Faculty of Chemistry and Pharmacy University of Regensburg 93040 Regensburg Germany
| | - Burkhard König
- Faculty of Chemistry and Pharmacy University of Regensburg 93040 Regensburg Germany
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3
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Ortiz E, Spinello BJ, Cho Y, Wu J, Krische MJ. Stereo- and Site-Selective Crotylation of Alcohol Proelectrophiles via Ruthenium-Catalyzed Hydrogen Auto-Transfer Mediated by Methylallene and Butadiene. Angew Chem Int Ed Engl 2022; 61:e202212814. [PMID: 36201364 PMCID: PMC9712268 DOI: 10.1002/anie.202212814] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2022] [Indexed: 11/06/2022]
Abstract
Iodide-bound ruthenium-JOSIPHOS complexes catalyze the redox-neutral C-C coupling of primary alcohols with methylallene (1,2-butadiene) or 1,3-butadiene to form products of anti-crotylation with good to excellent levels of diastereo- and enantioselectivity. Distinct from other methods, direct crotylation of primary alcohols in the presence of unprotected secondary alcohols is possible, enabling generation of spirastrellolide B (C9-C15) and leucascandrolide A (C9-C15) substructures in significantly fewer steps than previously possible.
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Affiliation(s)
| | | | - Yoon Cho
- University of Texas at Austin, Department of Chemistry, Austin, TX 78712-1167 (USA)
| | - Jessica Wu
- University of Texas at Austin, Department of Chemistry, Austin, TX 78712-1167 (USA)
| | - Michael J. Krische
- University of Texas at Austin, Department of Chemistry, Austin, TX 78712-1167 (USA)
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4
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Venditto NJ, Liang YS, El Mokadem RK, Nicewicz DA. Ketone-Olefin Coupling of Aliphatic and Aromatic Carbonyls Catalyzed by Excited-State Acridine Radicals. J Am Chem Soc 2022; 144:11888-11896. [PMID: 35737516 PMCID: PMC10031806 DOI: 10.1021/jacs.2c04822] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Ketone-olefin coupling reactions are common methods for the formation of carbon-carbon bonds. This reaction class typically requires stoichiometric or super stoichiometric quantities of metal reductants, and catalytic variations are limited in application. Photoredox catalysis has offered an alternative method toward ketone-olefin coupling reactions, although most methods are limited in scope to easily reducible aromatic carbonyl compounds. Herein, we describe a mild, metal-free ketone-olefin coupling reaction using an excited-state acridine radical super reductant as a photoredox catalyst. We demonstrate both intramolecular and intermolecular ketone-olefin couplings of aliphatic and aromatic ketones and aldehydes. Mechanistic evidence is also presented supporting an "olefin first" ketone-olefin coupling mechanism.
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Affiliation(s)
- Nicholas J Venditto
- Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599-3290, United States
| | - Yiyang S Liang
- Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599-3290, United States
| | - Roukaya K El Mokadem
- Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599-3290, United States
| | - David A Nicewicz
- Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599-3290, United States
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5
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Meyer CC, Dubey ZJ, Krische MJ. Enantioselective Iridium-Catalyzed Reductive Coupling of Dienes with Oxetanones and N-Acyl-Azetidinones Mediated by 2-Propanol. Angew Chem Int Ed Engl 2022; 61:e202115959. [PMID: 35119714 PMCID: PMC8940717 DOI: 10.1002/anie.202115959] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2021] [Indexed: 12/26/2022]
Abstract
Cyclometallated iridium-PhanePhos complexes generated in situ from [Ir(cod)Cl]2 and (R)-PhanePhos catalyze 2-propanol-mediated reductive couplings of 2-substituted dienes with oxetanone and N-acyl-azetidinones to form branched homoallylic oxetanols and azetidinols with excellent control of regio- and enantioselectivity without C-C cleavage of the strained ring via enantiotopic π-facial selection of transient allyliridium nucleophiles. This work represents the first systematic study of enantioselective additions to symmetric ketones.
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Affiliation(s)
- Cole C Meyer
- University of Texas at Austin, Department of Chemistry, 105 E 24th St. (A5300), Austin, TX 78712-1167, USA
| | - Zachary J Dubey
- University of Texas at Austin, Department of Chemistry, 105 E 24th St. (A5300), Austin, TX 78712-1167, USA
| | - Michael J Krische
- University of Texas at Austin, Department of Chemistry, 105 E 24th St. (A5300), Austin, TX 78712-1167, USA
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6
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Krische MJ, Meyer CC, Dubey ZJ. Enantioselective Iridium‐Catalyzed Reductive Coupling of Dienes with Oxetanones and N‐Acyl‐Azetidinones Mediated by 2‐Propanol. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202115959] [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)
- Michael Joseph Krische
- University of Texas at Austin Chemistry and Biochemistry 105 E 24TH ST. STOP A5300 78712 Austin UNITED STATES
| | - Cole C. Meyer
- The University of Texas at Austin Chemistry UNITED STATES
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7
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Li T, Luo Y, Wu Z, Xiao T, Jiang Y, Qin G. Dual Fe/Pd‐Catalyzed Reductive Cross‐Coupling: Constructing
gem
‐Difluoroallylenes with Alkenyl Bromides and Bromodifluoromethanes. European J Org Chem 2021. [DOI: 10.1002/ejoc.202101252] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Tao Li
- Faculty of Science Kunming University of Science and Technology 727 South Jingming Road Chenggong District, Kunming 650500 P. R. of China
| | - Yuhang Luo
- Faculty of Science Kunming University of Science and Technology 727 South Jingming Road Chenggong District, Kunming 650500 P. R. of China
| | - Zefeng Wu
- Faculty of Science Kunming University of Science and Technology 727 South Jingming Road Chenggong District, Kunming 650500 P. R. of China
| | - Tiebo Xiao
- Faculty of Science Kunming University of Science and Technology 727 South Jingming Road Chenggong District, Kunming 650500 P. R. of China
| | - Yubo Jiang
- Faculty of Science Kunming University of Science and Technology 727 South Jingming Road Chenggong District, Kunming 650500 P. R. of China
| | - Guiping Qin
- Faculty of Science Kunming University of Science and Technology 727 South Jingming Road Chenggong District, Kunming 650500 P. R. of China
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8
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Xiang M, Pfaffinger DE, Krische MJ. Allenes and Dienes as Chiral Allylmetal Pronucleophiles in Catalytic Enantioselective C=X Addition: Historical Perspective and State-of-The-Art Survey. Chemistry 2021; 27:13107-13116. [PMID: 34185926 PMCID: PMC8446312 DOI: 10.1002/chem.202101890] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2021] [Indexed: 12/18/2022]
Abstract
The use of allenes and 1,3-dienes as chiral allylmetal pronucleophiles in intermolecular catalytic enantioselective reductive additions to aldehydes, ketones, imines, carbon dioxide and other C=X electrophiles is exhaustively catalogued together with redox-neutral hydrogen auto-transfer processes. Coverage is limited to processes that result in both C-H and C-C bond formation. The use of alkynes as latent allylmetal pronucleophiles and multicomponent C=X allylations involving allenes and dienes is not covered. As illustrated in this review, the ability of allenes and 1,3-dienes to serve as tractable non-metallic pronucleophiles has evoked many useful transformations that have no counterpart in traditional allylmetal chemistry.
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Affiliation(s)
- Ming Xiang
- University of Texas at Austin, Department of Chemistry, 105 E 24th St. (A5300), Austin, TX 78712-1167 (USA)
| | - Dana E. Pfaffinger
- University of Texas at Austin, Department of Chemistry, 105 E 24th St. (A5300), Austin, TX 78712-1167 (USA)
| | - Michael J. Krische
- University of Texas at Austin, Department of Chemistry, 105 E 24th St. (A5300), Austin, TX 78712-1167 (USA)
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9
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Cristòfol À, Limburg B, Kleij AW. Expedient Dual Co/Organophotoredox Catalyzed Stereoselective Synthesis of All‐Carbon Quaternary Centers. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202103479] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Àlex Cristòfol
- Institute of Chemical Research of Catalonia (ICIQ) The Barcelona Institute of Science and Technology Av. Països Catalans 16 43007 Tarragona Spain
| | - Bart Limburg
- Institute of Chemical Research of Catalonia (ICIQ) The Barcelona Institute of Science and Technology Av. Països Catalans 16 43007 Tarragona Spain
| | - Arjan W. Kleij
- Institute of Chemical Research of Catalonia (ICIQ) The Barcelona Institute of Science and Technology Av. Països Catalans 16 43007 Tarragona Spain
- Catalan Institute of Research and Advanced Studies (ICREA) Pg. Lluís Companys 23 08010 Barcelona Spain
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10
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Tan G, Das M, Maisuls I, Strassert CA, Glorius F. Rhodium‐katalysierte dealkenylierende Arylierung von Alkenen mit Arylboronverbindungen. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202105355] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Guangying Tan
- Organisch-Chemisches Institut Westfälische Wilhelms-Universität Münster Corrensstraße 40 48149 Münster Deutschland
| | - Mowpriya Das
- Organisch-Chemisches Institut Westfälische Wilhelms-Universität Münster Corrensstraße 40 48149 Münster Deutschland
| | - Iván Maisuls
- Institut für Anorganische und Analytische Chemie CeNTech CiMIC SoN Westfälische Wilhelms-Universität Münster Heisenbergstraße 11 48149 Münster Deutschland
| | - Cristian A. Strassert
- Institut für Anorganische und Analytische Chemie CeNTech CiMIC SoN Westfälische Wilhelms-Universität Münster Heisenbergstraße 11 48149 Münster Deutschland
| | - Frank Glorius
- Organisch-Chemisches Institut Westfälische Wilhelms-Universität Münster Corrensstraße 40 48149 Münster Deutschland
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11
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Cristòfol À, Limburg B, Kleij AW. Expedient Dual Co/Organophotoredox Catalyzed Stereoselective Synthesis of All-Carbon Quaternary Centers. Angew Chem Int Ed Engl 2021; 60:15266-15270. [PMID: 33860978 DOI: 10.1002/anie.202103479] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2021] [Revised: 04/08/2021] [Indexed: 01/20/2023]
Abstract
An efficient and attractive Co/organophotoredox dual catalysis protocol has been developed allowing the stereoselective access to a wide variety of syn-configured 1,3-diols featuring quaternary carbon centers. The synthesis of the target molecules is achieved under ambient reaction conditions using modular and accessible reagents, substituted vinyl cyclic carbonates and aldehydes, and in short reaction times. Mechanistic control experiments suggest that the stereoselectivity can be rationalized via a preferred Zimmerman-Traxler transition state comprising a Co(allyl) species and an activated aldehyde. This newly developed process thus expands the use of base metal catalysis in the construction of challenging quaternary carbon stereocenters.
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Affiliation(s)
- Àlex Cristòfol
- Institute of Chemical Research of Catalonia (ICIQ), The Barcelona Institute of Science and Technology, Av. Països Catalans 16, 43007, Tarragona, Spain
| | - Bart Limburg
- Institute of Chemical Research of Catalonia (ICIQ), The Barcelona Institute of Science and Technology, Av. Països Catalans 16, 43007, Tarragona, Spain
| | - Arjan W Kleij
- Institute of Chemical Research of Catalonia (ICIQ), The Barcelona Institute of Science and Technology, Av. Països Catalans 16, 43007, Tarragona, Spain.,Catalan Institute of Research and Advanced Studies (ICREA), Pg. Lluís Companys 23, 08010, Barcelona, Spain
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12
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Tan G, Das M, Maisuls I, Strassert CA, Glorius F. Rhodium-Catalyzed Dealkenylative Arylation of Alkenes with Arylboronic Compounds. Angew Chem Int Ed Engl 2021; 60:15650-15655. [PMID: 33955653 DOI: 10.1002/anie.202105355] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2021] [Indexed: 12/24/2022]
Abstract
The C-C bond formation reaction represents a fundamental and important transformation in synthetic chemistry, and exploring new types of C-C bond formation reactions is recognized as appealing, yet challenging. Herein, we disclose the first example of rhodium-catalyzed dealkenylative arylation of alkenes with arylboronic compounds, thereby providing an unconventional access to bi(hetero)aryls with excellent chemoselectivity. In this method, C(aryl)-C(alkenyl) and C(alkenyl)-C(alkenyl) bonds in various alkenes and 1,3-dienes can be cleaved via a hydrometalation and followed by β-carbon elimination pathway for Suzuki-Miyaura reactions. Furthermore, a series of novel organic fluorescent molecules with excellent photophysical properties has been efficiently constructed with this protocol.
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Affiliation(s)
- Guangying Tan
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität Münster, Corrensstrasse 40, 48149, Münster, Germany
| | - Mowpriya Das
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität Münster, Corrensstrasse 40, 48149, Münster, Germany
| | - Iván Maisuls
- Institut für Anorganische und Analytische Chemie, CeNTech, CiMIC, SoN, Westfälische Wilhelms-Universität Münster, Heisenbergstrasse 11, 48149, Münster, Germany
| | - Cristian A Strassert
- Institut für Anorganische und Analytische Chemie, CeNTech, CiMIC, SoN, Westfälische Wilhelms-Universität Münster, Heisenbergstrasse 11, 48149, Münster, Germany
| | - Frank Glorius
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität Münster, Corrensstrasse 40, 48149, Münster, Germany
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13
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Chen X, Yue J, Wang K, Gui Y, Niu Y, Liu J, Ran C, Kong W, Zhou W, Yu D. Nickel‐Catalyzed Asymmetric Reductive Carbo‐Carboxylation of Alkenes with CO
2. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202102769] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Xiao‐Wang Chen
- Key Laboratory of Green Chemistry & Technology of Ministry of Education College of Chemistry Sichuan University 29 Wangjiang Road Chengdu 610064 P. R. China
| | - Jun‐Ping Yue
- Key Laboratory of Green Chemistry & Technology of Ministry of Education College of Chemistry Sichuan University 29 Wangjiang Road Chengdu 610064 P. R. China
| | - Kuai Wang
- The Center for Precision Synthesis Institute for Advanced Studies Wuhan University Wuhan 430072 P. R. China
| | - Yong‐Yuan Gui
- Key Laboratory of Green Chemistry & Technology of Ministry of Education College of Chemistry Sichuan University 29 Wangjiang Road Chengdu 610064 P. R. China
- College of Chemistry and Materials Science Sichuan Normal University Chengdu 610068 P. R. China
| | - Ya‐Nan Niu
- Key Laboratory of Green Chemistry & Technology of Ministry of Education College of Chemistry Sichuan University 29 Wangjiang Road Chengdu 610064 P. R. China
| | - Jie Liu
- Key Laboratory of Green Chemistry & Technology of Ministry of Education College of Chemistry Sichuan University 29 Wangjiang Road Chengdu 610064 P. R. China
| | - Chuan‐Kun Ran
- Key Laboratory of Green Chemistry & Technology of Ministry of Education College of Chemistry Sichuan University 29 Wangjiang Road Chengdu 610064 P. R. China
| | - Wangqing Kong
- The Center for Precision Synthesis Institute for Advanced Studies Wuhan University Wuhan 430072 P. R. China
| | - Wen‐Jun Zhou
- Key Laboratory of Green Chemistry & Technology of Ministry of Education College of Chemistry Sichuan University 29 Wangjiang Road Chengdu 610064 P. R. China
- College of Chemistry and Chemical Engineering Neijiang Normal University Neijiang 641100 P. R. China
| | - Da‐Gang Yu
- Key Laboratory of Green Chemistry & Technology of Ministry of Education College of Chemistry Sichuan University 29 Wangjiang Road Chengdu 610064 P. R. China
- Beijing National Laboratory for Molecular Sciences Beijing 100190 P. R. China
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14
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Chen X, Yue J, Wang K, Gui Y, Niu Y, Liu J, Ran C, Kong W, Zhou W, Yu D. Nickel‐Catalyzed Asymmetric Reductive Carbo‐Carboxylation of Alkenes with CO
2. Angew Chem Int Ed Engl 2021; 60:14068-14075. [DOI: 10.1002/anie.202102769] [Citation(s) in RCA: 36] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2021] [Indexed: 01/07/2023]
Affiliation(s)
- Xiao‐Wang Chen
- Key Laboratory of Green Chemistry & Technology of Ministry of Education College of Chemistry Sichuan University 29 Wangjiang Road Chengdu 610064 P. R. China
| | - Jun‐Ping Yue
- Key Laboratory of Green Chemistry & Technology of Ministry of Education College of Chemistry Sichuan University 29 Wangjiang Road Chengdu 610064 P. R. China
| | - Kuai Wang
- The Center for Precision Synthesis Institute for Advanced Studies Wuhan University Wuhan 430072 P. R. China
| | - Yong‐Yuan Gui
- Key Laboratory of Green Chemistry & Technology of Ministry of Education College of Chemistry Sichuan University 29 Wangjiang Road Chengdu 610064 P. R. China
- College of Chemistry and Materials Science Sichuan Normal University Chengdu 610068 P. R. China
| | - Ya‐Nan Niu
- Key Laboratory of Green Chemistry & Technology of Ministry of Education College of Chemistry Sichuan University 29 Wangjiang Road Chengdu 610064 P. R. China
| | - Jie Liu
- Key Laboratory of Green Chemistry & Technology of Ministry of Education College of Chemistry Sichuan University 29 Wangjiang Road Chengdu 610064 P. R. China
| | - Chuan‐Kun Ran
- Key Laboratory of Green Chemistry & Technology of Ministry of Education College of Chemistry Sichuan University 29 Wangjiang Road Chengdu 610064 P. R. China
| | - Wangqing Kong
- The Center for Precision Synthesis Institute for Advanced Studies Wuhan University Wuhan 430072 P. R. China
| | - Wen‐Jun Zhou
- Key Laboratory of Green Chemistry & Technology of Ministry of Education College of Chemistry Sichuan University 29 Wangjiang Road Chengdu 610064 P. R. China
- College of Chemistry and Chemical Engineering Neijiang Normal University Neijiang 641100 P. R. China
| | - Da‐Gang Yu
- Key Laboratory of Green Chemistry & Technology of Ministry of Education College of Chemistry Sichuan University 29 Wangjiang Road Chengdu 610064 P. R. China
- Beijing National Laboratory for Molecular Sciences Beijing 100190 P. R. China
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15
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Meyer CC, Stafford NP, Cheng MJ, Krische MJ. Ethanol: Unlocking an Abundant Renewable C 2 -Feedstock for Catalytic Enantioselective C-C Coupling. Angew Chem Int Ed Engl 2021; 60:10542-10546. [PMID: 33689214 PMCID: PMC8085048 DOI: 10.1002/anie.202102694] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2021] [Indexed: 12/13/2022]
Abstract
With annual production at >85 million tons/year, ethanol is the world's largest-volume renewable small molecule carbon source, yet its use as a C2 -feedstock in enantioselective C-C coupling is unknown. Here, the first catalytic enantioselective C-C couplings of ethanol are demonstrated in reactions with structurally complex, nitrogen-rich allylic acetates incorporating the top 10 N-heterocycles found in FDA-approved drugs.
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Affiliation(s)
- Cole C. Meyer
- University of Texas at Austin, Department of Chemistry, 105 E 24th St. (A5300), Austin, TX 78712-1167 (USA)
| | - Nicholas P. Stafford
- University of Texas at Austin, Department of Chemistry, 105 E 24th St. (A5300), Austin, TX 78712-1167 (USA)
| | - Melinda J. Cheng
- University of Texas at Austin, Department of Chemistry, 105 E 24th St. (A5300), Austin, TX 78712-1167 (USA)
| | - Michael J. Krische
- University of Texas at Austin, Department of Chemistry, 105 E 24th St. (A5300), Austin, TX 78712-1167 (USA)
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16
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Meyer CC, Stafford NP, Cheng MJ, Krische MJ. Ethanol: Unlocking an Abundant Renewable C
2
‐Feedstock for Catalytic Enantioselective C−C Coupling. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202102694] [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)
- Cole C. Meyer
- University of Texas at Austin Department of Chemistry 105 E 24th St. (A5300) Austin TX 78712-1167 USA
| | - Nicholas P. Stafford
- University of Texas at Austin Department of Chemistry 105 E 24th St. (A5300) Austin TX 78712-1167 USA
| | - Melinda J. Cheng
- University of Texas at Austin Department of Chemistry 105 E 24th St. (A5300) Austin TX 78712-1167 USA
| | - Michael J. Krische
- University of Texas at Austin Department of Chemistry 105 E 24th St. (A5300) Austin TX 78712-1167 USA
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17
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Shuler WG, Parvathaneni SP, Rodriguez JB, Lewis TN, Berges AJ, Bardeen CJ, Krische MJ. Synthesis and Photophysical Properties of Soluble N-Doped Rubicenes via Ruthenium-Catalyzed Transfer Hydrogenative Benzannulation. Chemistry 2021; 27:4898-4902. [PMID: 33576516 DOI: 10.1002/chem.202100134] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2021] [Indexed: 11/10/2022]
Abstract
Ruthenium-catalyzed butadiene-mediated benzannulation enabled the first synthesis of 3,10-(di-tert-butyl)rubicene and its N-doped derivatives as well as preliminary studies on their photophysical properties. Unlike the parent rubicene and 3,10-(di-tert-butyl)rubicene, which adopt classical herringbone-type packing motifs in the solid state, the N-doped congener 7 b displayed columnar packing with an alternating co-facial arrangement of aromatic and heteroaromatic substructures.
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Affiliation(s)
- William G Shuler
- Department of Chemistry, University of Texas at Austin, 105 E 24th St. (A5300), Austin, TX, 78712-1167, USA
| | - Sai P Parvathaneni
- Department of Chemistry, University of Texas at Austin, 105 E 24th St. (A5300), Austin, TX, 78712-1167, USA
| | - Jacob B Rodriguez
- Department of Materials Science and Engineering, University of California, 501 Big Springs Road, Riverside, CA, 92521, USA
| | - Taylor N Lewis
- Department of Chemistry, University of California, 501 Big Springs Road, Riverside, CA, 92521, USA
| | - Adam J Berges
- Department of Chemistry, University of California, 501 Big Springs Road, Riverside, CA, 92521, USA
| | - Christopher J Bardeen
- Department of Materials Science and Engineering, University of California, 501 Big Springs Road, Riverside, CA, 92521, USA.,Department of Chemistry, University of California, 501 Big Springs Road, Riverside, CA, 92521, USA
| | - Michael J Krische
- Department of Chemistry, University of Texas at Austin, 105 E 24th St. (A5300), Austin, TX, 78712-1167, USA
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18
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Yang L, Wurm T, Sharma Poudel B, Krische MJ. Enantioselective Total Synthesis of Andrographolide and 14-Hydroxy-Colladonin: Carbonyl Reductive Coupling and trans-Decalin Formation by Hydrogen Transfer. Angew Chem Int Ed Engl 2020; 59:23169-23173. [PMID: 32896046 PMCID: PMC7920188 DOI: 10.1002/anie.202011363] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2020] [Indexed: 12/11/2022]
Abstract
An enantioselective total synthesis of the labdane diterpene andrographolide, the bitter principle of the herb Andrographis paniculata (known as "King of Bitters"), was accomplished in 14 steps (LLS). Key transformations include iridium-catalyzed carbonyl reductive coupling to form the quaternary C4 stereocenter, diastereoselective alkene reduction to establish the trans-decalin ring, and carbonylative lactonization to install the α-alkylidene-β-hydroxy-γ-butyrolactone.
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Affiliation(s)
| | | | | | - Michael J. Krische
- University of Texas at Austin, Department of Chemistry, 105 E 24th St. (A5300), Austin, TX 78712-1167 (USA)
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Yang L, Wurm T, Sharma Poudel B, Krische MJ. Enantioselective Total Synthesis of Andrographolide and 14‐Hydroxy‐Colladonin: Carbonyl Reductive Coupling and
trans
‐Decalin Formation by Hydrogen Transfer. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202011363] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Lin Yang
- University of Texas at Austin Department of Chemistry 105 E 24th Street (A5300) Austin TX 78712-1167 USA
| | - Thomas Wurm
- University of Texas at Austin Department of Chemistry 105 E 24th Street (A5300) Austin TX 78712-1167 USA
| | - Binit Sharma Poudel
- University of Texas at Austin Department of Chemistry 105 E 24th Street (A5300) Austin TX 78712-1167 USA
| | - Michael J. Krische
- University of Texas at Austin Department of Chemistry 105 E 24th Street (A5300) Austin TX 78712-1167 USA
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Shuler WG, Swyka RA, Schempp TT, Spinello BJ, Krische MJ. Vinyl Triflate-Aldehyde Reductive Coupling-Redox Isomerization Mediated by Formate: Rhodium-Catalyzed Ketone Synthesis in the Absence of Stoichiometric Metals. Chemistry 2019; 25:12517-12520. [PMID: 31403727 PMCID: PMC6763374 DOI: 10.1002/chem.201903668] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2019] [Indexed: 12/20/2022]
Abstract
Direct conversion of aldehydes to ketones is achieved via rhodium-catalyzed vinyl triflate-aldehyde reductive coupling-redox isomerization mediated by potassium formate. This method circumvents premetalated C-nucleophiles and discrete redox manipulations typically required to form ketones from aldehydes.
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Affiliation(s)
- William G. Shuler
- University of Texas at Austin, Department of Chemistry, 105 E 24th St. (A5300), Austin, TX 78712-1167 (USA)
| | - Robert A. Swyka
- University of Texas at Austin, Department of Chemistry, 105 E 24th St. (A5300), Austin, TX 78712-1167 (USA)
| | - Tabitha T. Schempp
- University of Texas at Austin, Department of Chemistry, 105 E 24th St. (A5300), Austin, TX 78712-1167 (USA)
| | - Brian J. Spinello
- University of Texas at Austin, Department of Chemistry, 105 E 24th St. (A5300), Austin, TX 78712-1167 (USA)
| | - Michael J. Krische
- University of Texas at Austin, Department of Chemistry, 105 E 24th St. (A5300), Austin, TX 78712-1167 (USA)
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