251
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Gao AX, Hamada T, Snyder SA. The Enantioselective Total Synthesis of Exochomine. Angew Chem Int Ed Engl 2016; 55:10301-6. [DOI: 10.1002/anie.201604744] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2016] [Indexed: 11/10/2022]
Affiliation(s)
- Alison X. Gao
- Dept. of Chemistry The Scripps Research Institute 130 Scripps Way Jupiter FL 33458 USA
| | - Tomoaki Hamada
- Dept. of Chemistry The Scripps Research Institute 130 Scripps Way Jupiter FL 33458 USA
| | - Scott A. Snyder
- Dept. of Chemistry The Scripps Research Institute 130 Scripps Way Jupiter FL 33458 USA
- Dept. of Chemistry University of Chicago 5735 S. Ellis Avenue Chicago IL 60637 USA
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252
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Gao AX, Hamada T, Snyder SA. The Enantioselective Total Synthesis of Exochomine. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201604744] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Alison X. Gao
- Dept. of Chemistry The Scripps Research Institute 130 Scripps Way Jupiter FL 33458 USA
| | - Tomoaki Hamada
- Dept. of Chemistry The Scripps Research Institute 130 Scripps Way Jupiter FL 33458 USA
| | - Scott A. Snyder
- Dept. of Chemistry The Scripps Research Institute 130 Scripps Way Jupiter FL 33458 USA
- Dept. of Chemistry University of Chicago 5735 S. Ellis Avenue Chicago IL 60637 USA
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253
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Shigehisa H, Ano T, Honma H, Ebisawa K, Hiroya K. Co-Catalyzed Hydroarylation of Unactivated Olefins. Org Lett 2016; 18:3622-5. [DOI: 10.1021/acs.orglett.6b01662] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Hiroki Shigehisa
- Faculty of Pharmacy, Musashino University, 1-1-20, Shinmachi, Nishitokyo-shi, Tokyo 202-8585, Japan
| | - Takuya Ano
- Faculty of Pharmacy, Musashino University, 1-1-20, Shinmachi, Nishitokyo-shi, Tokyo 202-8585, Japan
| | - Hiroshi Honma
- Faculty of Pharmacy, Musashino University, 1-1-20, Shinmachi, Nishitokyo-shi, Tokyo 202-8585, Japan
| | - Kousuke Ebisawa
- Faculty of Pharmacy, Musashino University, 1-1-20, Shinmachi, Nishitokyo-shi, Tokyo 202-8585, Japan
| | - Kou Hiroya
- Faculty of Pharmacy, Musashino University, 1-1-20, Shinmachi, Nishitokyo-shi, Tokyo 202-8585, Japan
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254
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Affiliation(s)
- Xiaoshen Ma
- Department
of Chemistry, Yale University, New Haven, Connecticut 06520, United States
| | - Seth B. Herzon
- Department
of Chemistry, Yale University, New Haven, Connecticut 06520, United States
- Department
of Pharmacology, Yale School of Medicine, New Haven, Connecticut 06520, United States
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255
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Lu X, Xiao B, Liu L, Fu Y. Formation of C(sp3
)-C(sp3
) Bonds through Nickel-Catalyzed Decarboxylative Olefin Hydroalkylation Reactions. Chemistry 2016; 22:11161-4. [DOI: 10.1002/chem.201602486] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2016] [Indexed: 01/25/2023]
Affiliation(s)
- Xi Lu
- Hefei National Laboratory for Physical Sciences at the Microscale; iChEM, CAS Key Laboratory of Urban Pollutant Conversion; Anhui Province Key Laboratory of Biomass Clean Energy; University of Science and Technology of China; Hefei 230026 China
- Department of Chemistry; Tsinghua University; Beijing 100084 China
| | - Bin Xiao
- Hefei National Laboratory for Physical Sciences at the Microscale; iChEM, CAS Key Laboratory of Urban Pollutant Conversion; Anhui Province Key Laboratory of Biomass Clean Energy; University of Science and Technology of China; Hefei 230026 China
| | - Lei Liu
- Department of Chemistry; Tsinghua University; Beijing 100084 China
| | - Yao Fu
- Hefei National Laboratory for Physical Sciences at the Microscale; iChEM, CAS Key Laboratory of Urban Pollutant Conversion; Anhui Province Key Laboratory of Biomass Clean Energy; University of Science and Technology of China; Hefei 230026 China
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256
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Zhang H, Li H, Yang H, Fu H. Iron-Catalyzed Diastereoselective Synthesis of Unnatural Chiral Amino Acid Derivatives. Org Lett 2016; 18:3362-5. [DOI: 10.1021/acs.orglett.6b01493] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Hao Zhang
- Key Laboratory
of Bioorganic Phosphorus Chemistry and Chemical Biology (Ministry
of Education), Department of Chemistry, Tsinghua University, Beijing 100084, P. R. China
| | - Haifang Li
- Key Laboratory
of Bioorganic Phosphorus Chemistry and Chemical Biology (Ministry
of Education), Department of Chemistry, Tsinghua University, Beijing 100084, P. R. China
| | - Haijun Yang
- Key Laboratory
of Bioorganic Phosphorus Chemistry and Chemical Biology (Ministry
of Education), Department of Chemistry, Tsinghua University, Beijing 100084, P. R. China
| | - Hua Fu
- Key Laboratory
of Bioorganic Phosphorus Chemistry and Chemical Biology (Ministry
of Education), Department of Chemistry, Tsinghua University, Beijing 100084, P. R. China
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257
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Li G, Kuo JL, Han A, Abuyuan JM, Young LC, Norton JR, Palmer JH. Radical Isomerization and Cycloisomerization Initiated by H• Transfer. J Am Chem Soc 2016; 138:7698-704. [PMID: 27167594 DOI: 10.1021/jacs.6b03509] [Citation(s) in RCA: 88] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Under H2 pressure, Co(II)(dmgBF2)2L2 (L = H2O, THF) generates a low concentration of an H• donor. Transfer of the H• onto an olefin gives a radical that can either (1) transfer an H• back to the metal, generating an isomerized olefin, or (2) add intramolecularly to a double bond, generating a cyclized radical. Transfer of an H• back to the metal from the cyclized radical results in a cycloisomerization. Both outcomes are favored by the low concentration of the cobalt H• donor, whereas hydrogenation and cyclohydrogenation are more likely with other catalysts (when the concentration of the H• donor is high).
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Affiliation(s)
- Gang Li
- Department of Chemistry, Columbia University , 3000 Broadway, New York, New York 10027, United States
| | - Jonathan L Kuo
- Department of Chemistry, Columbia University , 3000 Broadway, New York, New York 10027, United States
| | - Arthur Han
- Department of Chemistry, Columbia University , 3000 Broadway, New York, New York 10027, United States
| | - Janine M Abuyuan
- Department of Chemistry, Barnard College , 3009 Broadway, New York, New York 10027, United States
| | - Lily C Young
- Department of Chemistry, Columbia University , 3000 Broadway, New York, New York 10027, United States
| | - Jack R Norton
- Department of Chemistry, Columbia University , 3000 Broadway, New York, New York 10027, United States
| | - Joshua H Palmer
- Department of Chemistry, Columbia University , 3000 Broadway, New York, New York 10027, United States
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258
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Kislukhin AA, Xu H, Adams SR, Narsinh KH, Tsien RY, Ahrens ET. Paramagnetic fluorinated nanoemulsions for sensitive cellular fluorine-19 magnetic resonance imaging. NATURE MATERIALS 2016; 15:662-8. [PMID: 26974409 PMCID: PMC5053764 DOI: 10.1038/nmat4585] [Citation(s) in RCA: 125] [Impact Index Per Article: 15.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/13/2015] [Accepted: 01/26/2016] [Indexed: 05/05/2023]
Abstract
Fluorine-19 magnetic resonance imaging ((19)F MRI) probes enable quantitative in vivo detection of cell therapies and inflammatory cells. Here, we describe the formulation of perfluorocarbon-based nanoemulsions with improved sensitivity for cellular MRI. Reduction of the (19)F spin-lattice relaxation time (T1) enables rapid imaging and an improved signal-to-noise ratio, thereby improving cell detection sensitivity. We synthesized metal-binding β-diketones conjugated to linear perfluoropolyether (PFPE), formulated these fluorinated ligands as aqueous nanoemulsions, and then metallated them with various transition and lanthanide ions in the fluorous phase. Iron(III) tris-β-diketonate ('FETRIS') nanoemulsions with PFPE have low cytotoxicity (<20%) and superior MRI properties. Moreover, the (19)F T1 can readily be reduced by an order of magnitude and tuned by stoichiometric modulation of the iron concentration. The resulting (19)F MRI detection sensitivity is enhanced by three- to fivefold over previously used tracers at 11.7 T, and is predicted to increase by at least eightfold at the clinical field strength of 3 T.
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Affiliation(s)
| | - Hongyan Xu
- Department of Radiology, University of California, San Diego, La Jolla, CA 92093
| | - Stephen R. Adams
- Department of Pharmacology, University of California, San Diego, La Jolla, CA 92093
| | - Kazim H. Narsinh
- Department of Radiology, University of California, San Diego, La Jolla, CA 92093
| | - Roger Y. Tsien
- Department of Pharmacology, University of California, San Diego, La Jolla, CA 92093
- Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, CA 92093
- Howard Hughes Medical Institute, University of California, San Diego, La Jolla, CA 92093
- Corresponding Authors: Roger Y. Tsien, PhD, Departments of Pharmacology and of Chemistry and Biochemistry, University of California, San Diego, La Jolla, CA 92093-0647, USA, Phone: (858) 534-4891, , Eric T. Ahrens, PhD, Department of Radiology, University of California, San Diego, La Jolla, CA 92093, USA, Phone: (858) 246-0279,
| | - Eric T. Ahrens
- Department of Radiology, University of California, San Diego, La Jolla, CA 92093
- Corresponding Authors: Roger Y. Tsien, PhD, Departments of Pharmacology and of Chemistry and Biochemistry, University of California, San Diego, La Jolla, CA 92093-0647, USA, Phone: (858) 534-4891, , Eric T. Ahrens, PhD, Department of Radiology, University of California, San Diego, La Jolla, CA 92093, USA, Phone: (858) 246-0279,
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259
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Shen Y, Qi J, Mao Z, Cui S. Fe-Catalyzed Hydroalkylation of Olefins with para-Quinone Methides. Org Lett 2016; 18:2722-5. [DOI: 10.1021/acs.orglett.6b01173] [Citation(s) in RCA: 106] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Yangyong Shen
- Institute
of Drug Discovery and Design, College of Pharmaceutical Sciences, Zhejiang University, 866 Yuhangtang Road, Hangzhou, Zhejiang 310058, China
| | - Jifeng Qi
- Institute
of Drug Discovery and Design, College of Pharmaceutical Sciences, Zhejiang University, 866 Yuhangtang Road, Hangzhou, Zhejiang 310058, China
| | - Zhenjun Mao
- Institute
of Drug Discovery and Design, College of Pharmaceutical Sciences, Zhejiang University, 866 Yuhangtang Road, Hangzhou, Zhejiang 310058, China
| | - Sunliang Cui
- Institute
of Drug Discovery and Design, College of Pharmaceutical Sciences, Zhejiang University, 866 Yuhangtang Road, Hangzhou, Zhejiang 310058, China
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260
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Crossley SWM, Martinez RM, Guevara-Zuluaga S, Shenvi RA. Synthesis of the Privileged 8-Arylmenthol Class by Radical Arylation of Isopulegol. Org Lett 2016; 18:2620-3. [PMID: 27175746 DOI: 10.1021/acs.orglett.6b01047] [Citation(s) in RCA: 57] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Hydrogen atom transfer (HAT) circumvents a disfavored Friedel-Crafts reaction in the derivatization of the inexpensive monoterpene isopulegol. A variety of readily prepared aryl and heteroaryl sulfonates undergo a formal hydroarylation to form 8-arylmenthols, privileged scaffolds for asymmetric synthesis, as typified by 8-phenylmenthol. High stereoselectivity is observed in related systems. This use of HAT significantly extends the chiral pool from the inexpensive monoterpene isopulegol.
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Affiliation(s)
- Steven W M Crossley
- Department of Chemistry, The Scripps Research Institute , 10550 North Torrey Pines Road, La Jolla, California 92037, United States
| | - Ruben M Martinez
- Department of Chemistry, The Scripps Research Institute , 10550 North Torrey Pines Road, La Jolla, California 92037, United States
| | - Sebastián Guevara-Zuluaga
- Department of Chemistry, The Scripps Research Institute , 10550 North Torrey Pines Road, La Jolla, California 92037, United States
| | - Ryan A Shenvi
- Department of Chemistry, The Scripps Research Institute , 10550 North Torrey Pines Road, La Jolla, California 92037, United States
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261
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Shaw MH, Shurtleff VW, Terrett JA, Cuthbertson JD, MacMillan DWC. Native functionality in triple catalytic cross-coupling: sp³ C-H bonds as latent nucleophiles. Science 2016; 352:1304-8. [PMID: 27127237 DOI: 10.1126/science.aaf6635] [Citation(s) in RCA: 430] [Impact Index Per Article: 53.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2016] [Accepted: 04/14/2016] [Indexed: 12/15/2022]
Abstract
The use of sp(3) C-H bonds--which are ubiquitous in organic molecules--as latent nucleophile equivalents for transition metal-catalyzed cross-coupling reactions has the potential to substantially streamline synthetic efforts in organic chemistry while bypassing substrate activation steps. Through the combination of photoredox-mediated hydrogen atom transfer (HAT) and nickel catalysis, we have developed a highly selective and general C-H arylation protocol that activates a wide array of C-H bonds as native functional handles for cross-coupling. This mild approach takes advantage of a tunable HAT catalyst that exhibits predictable reactivity patterns based on enthalpic and bond polarity considerations to selectively functionalize α-amino and α-oxy sp(3) C-H bonds in both cyclic and acyclic systems.
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Affiliation(s)
- Megan H Shaw
- Merck Center for Catalysis at Princeton University, Princeton, NJ 08544, USA
| | - Valerie W Shurtleff
- Merck Center for Catalysis at Princeton University, Princeton, NJ 08544, USA
| | - Jack A Terrett
- Merck Center for Catalysis at Princeton University, Princeton, NJ 08544, USA
| | - James D Cuthbertson
- Merck Center for Catalysis at Princeton University, Princeton, NJ 08544, USA
| | - David W C MacMillan
- Merck Center for Catalysis at Princeton University, Princeton, NJ 08544, USA.
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262
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Obradors C, Martinez RM, Shenvi RA. Ph(i-PrO)SiH2: An Exceptional Reductant for Metal-Catalyzed Hydrogen Atom Transfers. J Am Chem Soc 2016; 138:4962-71. [PMID: 26984323 PMCID: PMC4858193 DOI: 10.1021/jacs.6b02032] [Citation(s) in RCA: 192] [Impact Index Per Article: 24.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
We report the discovery of an outstanding reductant for metal-catalyzed radical hydrofunctionalization reactions. Observations of unexpected silane solvolysis distributions in the HAT-initiated hydrogenation of alkenes reveal that phenylsilane is not the kinetically preferred reductant in many of these transformations. Instead, isopropoxy(phenyl)silane forms under the reaction conditions, suggesting that alcohols function as important silane ligands to promote the formation of metal hydrides. Study of its reactivity showed that isopropoxy(phenyl)silane is an exceptionally efficient stoichiometric reductant, and it is now possible to significantly decrease catalyst loadings, lower reaction temperatures, broaden functional group tolerance, and use diverse, aprotic solvents in iron- and manganese-catalyzed hydrofunctionalizations. As representative examples, we have improved the yields and rates of alkene reduction, hydration, hydroamination, and conjugate addition. Discovery of this broadly applicable, chemoselective, and solvent-versatile reagent should allow an easier interface with existing radical reactions. Finally, isotope-labeling experiments rule out the alternative hypothesis of hydrogen atom transfer from a redox-active β-diketonate ligand in the HAT step. Instead, initial HAT from a metal hydride to directly generate a carbon-centered radical appears to be the most reasonable hypothesis.
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Affiliation(s)
- Carla Obradors
- Department of Chemistry, The Scripps Research Institute, La Jolla, California 92037, United States
| | - Ruben M. Martinez
- Department of Chemistry, The Scripps Research Institute, La Jolla, California 92037, United States
| | - Ryan A. Shenvi
- Department of Chemistry, The Scripps Research Institute, La Jolla, California 92037, United States
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263
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Zheng YL, Liu YY, Wu YM, Wang YX, Lin YT, Ye M. Iron-Catalyzed Regioselective Transfer Hydrogenative Couplings of Unactivated Aldehydes with Simple Alkenes. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201602130] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Yan-Long Zheng
- State Key Laboratory and Institute of Elemento-Organic Chemistry; Nankai University; Tianjin 300071 China
| | - Yan-Yao Liu
- State Key Laboratory and Institute of Elemento-Organic Chemistry; Nankai University; Tianjin 300071 China
| | - Yi-Mei Wu
- State Key Laboratory and Institute of Elemento-Organic Chemistry; Nankai University; Tianjin 300071 China
| | - Yin-Xia Wang
- State Key Laboratory and Institute of Elemento-Organic Chemistry; Nankai University; Tianjin 300071 China
| | - Yu-Tong Lin
- State Key Laboratory and Institute of Elemento-Organic Chemistry; Nankai University; Tianjin 300071 China
| | - Mengchun Ye
- State Key Laboratory and Institute of Elemento-Organic Chemistry; Nankai University; Tianjin 300071 China
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin); Tianjin 300071 China
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264
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Zheng YL, Liu YY, Wu YM, Wang YX, Lin YT, Ye M. Iron-Catalyzed Regioselective Transfer Hydrogenative Couplings of Unactivated Aldehydes with Simple Alkenes. Angew Chem Int Ed Engl 2016; 55:6315-8. [PMID: 27072872 DOI: 10.1002/anie.201602130] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2016] [Indexed: 11/12/2022]
Abstract
An FeBr3 -catalyzed reductive coupling of various aldehydes with alkenes that proceeds through a direct hydride transfer pathway has been developed. With (i) PrOH as the hydrogen donor under mild conditions, previously challenging coupling reactions of unactivated alkyl and aryl aldehydes with simple alkenes, such as styrene derivatives and α-olefins, proceeded smoothly to furnish a diverse range of functionalized alcohols with complete linear regioselectivity.
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Affiliation(s)
- Yan-Long Zheng
- State Key Laboratory and Institute of Elemento-Organic Chemistry, Nankai University, Tianjin, 300071, China
| | - Yan-Yao Liu
- State Key Laboratory and Institute of Elemento-Organic Chemistry, Nankai University, Tianjin, 300071, China
| | - Yi-Mei Wu
- State Key Laboratory and Institute of Elemento-Organic Chemistry, Nankai University, Tianjin, 300071, China
| | - Yin-Xia Wang
- State Key Laboratory and Institute of Elemento-Organic Chemistry, Nankai University, Tianjin, 300071, China
| | - Yu-Tong Lin
- State Key Laboratory and Institute of Elemento-Organic Chemistry, Nankai University, Tianjin, 300071, China
| | - Mengchun Ye
- State Key Laboratory and Institute of Elemento-Organic Chemistry, Nankai University, Tianjin, 300071, China. .,Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin, 300071, China.
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265
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Lu X, Xiao B, Zhang Z, Gong T, Su W, Yi J, Fu Y, Liu L. Practical carbon-carbon bond formation from olefins through nickel-catalyzed reductive olefin hydrocarbonation. Nat Commun 2016; 7:11129. [PMID: 27033405 PMCID: PMC4821992 DOI: 10.1038/ncomms11129] [Citation(s) in RCA: 190] [Impact Index Per Article: 23.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2015] [Accepted: 02/17/2016] [Indexed: 12/22/2022] Open
Abstract
New carbon–carbon bond formation reactions expand our horizon of retrosynthetic analysis for the synthesis of complex organic molecules. Although many methods are now available for the formation of C(sp2)–C(sp3) and C(sp3)–C(sp3) bonds via transition metal-catalyzed cross-coupling of alkyl organometallic reagents, direct use of readily available olefins in a formal fashion of hydrocarbonation to make C(sp2)–C(sp3) and C(sp3)–C(sp3) bonds remains to be developed. Here we report the discovery of a general process for the intermolecular reductive coupling of unactivated olefins with alkyl or aryl electrophiles under the promotion of a simple nickel catalyst system. This new reaction presents a conceptually unique and practical strategy for the construction of C(sp2)–C(sp3) and C(sp3)–C(sp3) bonds without using any organometallic reagent. The reductive olefin hydrocarbonation also exhibits excellent compatibility with varieties of synthetically important functional groups and therefore, provides a straightforward approach for modification of complex organic molecules containing olefin groups. Olefins are employed in many coupling procedures but direct hydrocarbonations of unactivated olefins remain to be developed. Here, the authors report the nickel-catalyzed reductive coupling of olefins with aryl and alky electrophiles under mild conditions and with a broad substrate scope.
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Affiliation(s)
- Xi Lu
- Hefei National Laboratory for Physical Sciences at the Microscale, iChEM, CAS Key Laboratory of Urban Pollutant Conversion, Anhui Province Key Laboratory of Biomass Clean Energy, University of Science and Technology of China, Hefei 230026, China.,Department of Chemistry, Tsinghua University, Beijing 100084, China
| | - Bin Xiao
- Hefei National Laboratory for Physical Sciences at the Microscale, iChEM, CAS Key Laboratory of Urban Pollutant Conversion, Anhui Province Key Laboratory of Biomass Clean Energy, University of Science and Technology of China, Hefei 230026, China
| | - Zhenqi Zhang
- Hefei National Laboratory for Physical Sciences at the Microscale, iChEM, CAS Key Laboratory of Urban Pollutant Conversion, Anhui Province Key Laboratory of Biomass Clean Energy, University of Science and Technology of China, Hefei 230026, China
| | - Tianjun Gong
- Hefei National Laboratory for Physical Sciences at the Microscale, iChEM, CAS Key Laboratory of Urban Pollutant Conversion, Anhui Province Key Laboratory of Biomass Clean Energy, University of Science and Technology of China, Hefei 230026, China
| | - Wei Su
- Hefei National Laboratory for Physical Sciences at the Microscale, iChEM, CAS Key Laboratory of Urban Pollutant Conversion, Anhui Province Key Laboratory of Biomass Clean Energy, University of Science and Technology of China, Hefei 230026, China
| | - Jun Yi
- Hefei National Laboratory for Physical Sciences at the Microscale, iChEM, CAS Key Laboratory of Urban Pollutant Conversion, Anhui Province Key Laboratory of Biomass Clean Energy, University of Science and Technology of China, Hefei 230026, China
| | - Yao Fu
- Hefei National Laboratory for Physical Sciences at the Microscale, iChEM, CAS Key Laboratory of Urban Pollutant Conversion, Anhui Province Key Laboratory of Biomass Clean Energy, University of Science and Technology of China, Hefei 230026, China
| | - Lei Liu
- Department of Chemistry, Tsinghua University, Beijing 100084, China
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266
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Zhu L, Wang LS, Li B, Fu B, Zhang CP, Li W. Operationally simple hydrotrifluoromethylation of alkenes with sodium triflinate enabled by Ir photoredox catalysis. Chem Commun (Camb) 2016; 52:6371-4. [PMID: 26996326 DOI: 10.1039/c6cc01944g] [Citation(s) in RCA: 104] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
We report herein a single component Ir photoredox catalyst which is capable of catalyzing the hydrotrifluoromethylation of terminal alkenes and Michael acceptors with sodium triflinate (Langlois reagent) in methanol under irradiation at room temperature. Various synthetically useful functional groups, including ester, amide, ether, aldehyde, sulfone, ketone and aryl boronate, are well tolerated in this reaction.
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Affiliation(s)
- Lei Zhu
- College of Chemistry and Materials Science, Hubei Engineering University, Hubei, 432000, China.
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267
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Shi JL, Zhang JC, Wang BQ, Hu P, Zhao KQ, Shi ZJ. Fe-Promoted Chlorobenzylation of Terminal Alkynes through Benzylic C(sp3)–H Bond Functionalization. Org Lett 2016; 18:1238-41. [DOI: 10.1021/acs.orglett.5b02472] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jiang-Ling Shi
- College
of Chemistry and Material Chemistry, Sichuan Normal University, Sichuan 610066, China
| | - Ji-Cheng Zhang
- Beijing
National Laboratory of Molecular Sciences (BNLMS) and Key Laboratory
of Bioorganic Chemistry and Molecular Engineering of Ministry of Education,
College of Chemistry, Peking University, Beijing 100871, China
| | - Bi-Qin Wang
- College
of Chemistry and Material Chemistry, Sichuan Normal University, Sichuan 610066, China
| | - Ping Hu
- College
of Chemistry and Material Chemistry, Sichuan Normal University, Sichuan 610066, China
| | - Ke-Qing Zhao
- College
of Chemistry and Material Chemistry, Sichuan Normal University, Sichuan 610066, China
| | - Zhang-Jie Shi
- Beijing
National Laboratory of Molecular Sciences (BNLMS) and Key Laboratory
of Bioorganic Chemistry and Molecular Engineering of Ministry of Education,
College of Chemistry, Peking University, Beijing 100871, China
- State
Key Laboratory of Organometallic Chemistry, Chinese Academy of Sciences, Shanghai 200032, China
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268
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Zhu K, Shaver MP, Thomas SP. Amine-bis(phenolate) Iron(III)-Catalyzed Formal Hydroamination of Olefins. Chem Asian J 2016; 11:977-80. [DOI: 10.1002/asia.201501098] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2015] [Indexed: 01/08/2023]
Affiliation(s)
- Kailong Zhu
- School of Chemistry, Joseph Black Building; University of Edinburgh; David Brewster Road Edinburgh EH9 3FJ United Kingdom
| | - Michael P. Shaver
- School of Chemistry, Joseph Black Building; University of Edinburgh; David Brewster Road Edinburgh EH9 3FJ United Kingdom
| | - Stephen P. Thomas
- School of Chemistry, Joseph Black Building; University of Edinburgh; David Brewster Road Edinburgh EH9 3FJ United Kingdom
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269
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Liang Y, Jiao N. Cationic Cobalt(III) Catalyzed Indole Synthesis: The Regioselective Intermolecular Cyclization of N-Nitrosoanilines and Alkynes. Angew Chem Int Ed Engl 2016; 55:4035-9. [PMID: 26889923 DOI: 10.1002/anie.201511002] [Citation(s) in RCA: 168] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2015] [Revised: 01/01/2016] [Indexed: 11/10/2022]
Abstract
The unique regioselectivity and reactivity of cobalt(III) in the direct cyclization of N-nitrosoanilines with alkynes for the expedient synthesis of N-substituted indoles is demonstrated. In the presence of a cobalt(III) catalyst, high regioselectivity was observed when using unsymmetrical meta-substituted N-nitrosoanilines. Moreover, internal alkynes bearing electron-deficient groups, which are almost unreactive in the [Cp*Rh(III)]-catalyzed system, display good reactivity in this transformation.
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Affiliation(s)
- Yujie Liang
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Xue Yuan Rd. 38, Beijing, 100191, China
| | - Ning Jiao
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Xue Yuan Rd. 38, Beijing, 100191, China. .,State Key Laboratory of Organometallic Chemistry, Chinese Academy of Sciences, Shanghai, 200032, China.
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270
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Liang Y, Jiao N. Cationic Cobalt(III) Catalyzed Indole Synthesis: The Regioselective Intermolecular Cyclization of N-Nitrosoanilines and Alkynes. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201511002] [Citation(s) in RCA: 56] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Yujie Liang
- State Key Laboratory of Natural and Biomimetic Drugs; School of Pharmaceutical Sciences; Peking University; Xue Yuan Rd. 38 Beijing 100191 China
| | - Ning Jiao
- State Key Laboratory of Natural and Biomimetic Drugs; School of Pharmaceutical Sciences; Peking University; Xue Yuan Rd. 38 Beijing 100191 China
- State Key Laboratory of Organometallic Chemistry; Chinese Academy of Sciences; Shanghai 200032 China
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271
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Battilocchio C, Feist F, Hafner A, Simon M, Tran DN, Allwood DM, Blakemore DC, Ley SV. Iterative reactions of transient boronic acids enable sequential C–C bond formation. Nat Chem 2016; 8:360-7. [DOI: 10.1038/nchem.2439] [Citation(s) in RCA: 97] [Impact Index Per Article: 12.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2015] [Accepted: 12/14/2015] [Indexed: 02/02/2023]
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272
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Liu W, Li H, Cai PJ, Wang Z, Yu ZX, Lei X. Scalable Total Synthesis of rac
-Jungermannenones B and C. Angew Chem Int Ed Engl 2016; 55:3112-6. [DOI: 10.1002/anie.201511659] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2015] [Indexed: 12/18/2022]
Affiliation(s)
- Weilong Liu
- Beijing National Laboratory for Molecular Sciences; Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education; Department of Chemical Biology, College of Chemistry and Molecular Engineering, Synthetic and Functional Biomolecules Center; Peking-Tsinghua Center for Life Sciences; Peking University; Beijing 100871 China
- National Institute of Biological Sciences (NIBS); Beijing 102206 China
| | - Houhua Li
- National Institute of Biological Sciences (NIBS); Beijing 102206 China
| | - Pei-Jun Cai
- College of Chemistry and Molecular Engineering; Peking University; Beijing 100871 China
| | - Zhen Wang
- National Institute of Biological Sciences (NIBS); Beijing 102206 China
| | - Zhi-Xiang Yu
- College of Chemistry and Molecular Engineering; Peking University; Beijing 100871 China
| | - Xiaoguang Lei
- Beijing National Laboratory for Molecular Sciences; Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education; Department of Chemical Biology, College of Chemistry and Molecular Engineering, Synthetic and Functional Biomolecules Center; Peking-Tsinghua Center for Life Sciences; Peking University; Beijing 100871 China
- National Institute of Biological Sciences (NIBS); Beijing 102206 China
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273
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Liu W, Li H, Cai PJ, Wang Z, Yu ZX, Lei X. Scalable Total Synthesis of rac
-Jungermannenones B and C. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201511659] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Weilong Liu
- Beijing National Laboratory for Molecular Sciences; Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education; Department of Chemical Biology, College of Chemistry and Molecular Engineering, Synthetic and Functional Biomolecules Center; Peking-Tsinghua Center for Life Sciences; Peking University; Beijing 100871 China
- National Institute of Biological Sciences (NIBS); Beijing 102206 China
| | - Houhua Li
- National Institute of Biological Sciences (NIBS); Beijing 102206 China
| | - Pei-Jun Cai
- College of Chemistry and Molecular Engineering; Peking University; Beijing 100871 China
| | - Zhen Wang
- National Institute of Biological Sciences (NIBS); Beijing 102206 China
| | - Zhi-Xiang Yu
- College of Chemistry and Molecular Engineering; Peking University; Beijing 100871 China
| | - Xiaoguang Lei
- Beijing National Laboratory for Molecular Sciences; Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education; Department of Chemical Biology, College of Chemistry and Molecular Engineering, Synthetic and Functional Biomolecules Center; Peking-Tsinghua Center for Life Sciences; Peking University; Beijing 100871 China
- National Institute of Biological Sciences (NIBS); Beijing 102206 China
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274
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Reyes JR, Rawal VH. Reductive Chlorination and Bromination of Ketones via Trityl Hydrazones. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201510909] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Julius R. Reyes
- Department of Chemistry; The University of Chicago; 5735 South Ellis Avenue Chicago IL 60637 USA
| | - Viresh H. Rawal
- Department of Chemistry; The University of Chicago; 5735 South Ellis Avenue Chicago IL 60637 USA
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275
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Reyes JR, Rawal VH. Reductive Chlorination and Bromination of Ketones via Trityl Hydrazones. Angew Chem Int Ed Engl 2016; 55:3077-80. [PMID: 26823122 DOI: 10.1002/anie.201510909] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2015] [Indexed: 11/10/2022]
Abstract
A method is presented for the direct transformation of a ketone to the corresponding reduced alkyl chloride or bromide. The process involves the reaction of a ketone trityl hydrazone with tBuOCl to give a diazene which readily collapses to the α-chlorocarbinyl radical, reduction of which by a hydrogen atom source gives the alkyl chloride product. The use of N-bromosuccinimide provides the corresponding alkyl bromide. This unique transformation provides a reductive halogenation that complements Barton's redox-neutral vinyl halide synthesis.
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Affiliation(s)
- Julius R Reyes
- Department of Chemistry, The University of Chicago, 5735 South Ellis Avenue, Chicago, IL, 60637, USA
| | - Viresh H Rawal
- Department of Chemistry, The University of Chicago, 5735 South Ellis Avenue, Chicago, IL, 60637, USA.
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276
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Ren B, Ramström O, Zhang Q, Ge J, Dong H. An Iron(III) Catalyst with Unusually Broad Substrate Scope in Regioselective Alkylation of Diols and Polyols. Chemistry 2016; 22:2481-6. [DOI: 10.1002/chem.201504477] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2015] [Indexed: 11/10/2022]
Affiliation(s)
- Bo Ren
- Key laboratory of Material Chemistry for; Energy Conversion and Storage; Ministry of Education; School of Chemistry and Chemical Engineering; Huazhong University of Science and Technology; Luoyu Road 1037 430074 Wuhan P.R. China
| | - Olof Ramström
- Department of Chemistry; KTH-Royal Institute of Technology; Teknikringen 30 10044 Stockholm Sweden
| | - Qiang Zhang
- Key laboratory of Material Chemistry for; Energy Conversion and Storage; Ministry of Education; School of Chemistry and Chemical Engineering; Huazhong University of Science and Technology; Luoyu Road 1037 430074 Wuhan P.R. China
| | - Jiantao Ge
- Key laboratory of Material Chemistry for; Energy Conversion and Storage; Ministry of Education; School of Chemistry and Chemical Engineering; Huazhong University of Science and Technology; Luoyu Road 1037 430074 Wuhan P.R. China
| | - Hai Dong
- Key laboratory of Material Chemistry for; Energy Conversion and Storage; Ministry of Education; School of Chemistry and Chemical Engineering; Huazhong University of Science and Technology; Luoyu Road 1037 430074 Wuhan P.R. China
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277
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Lebel H, Piras H, Borduy M. Iron-Catalyzed Amination of Sulfides and Sulfoxides with Azides in Photochemical Continuous Flow Synthesis. ACS Catal 2016. [DOI: 10.1021/acscatal.5b02495] [Citation(s) in RCA: 51] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Hélène Lebel
- Département
de Chimie,
Center for Green Chemistry and Catalysis, Université de Montréal, C.P. 6128, Succursale Centre-ville, Montréal, Québec H3C 3J7, Canada
| | - Henri Piras
- Département
de Chimie,
Center for Green Chemistry and Catalysis, Université de Montréal, C.P. 6128, Succursale Centre-ville, Montréal, Québec H3C 3J7, Canada
| | - Marie Borduy
- Département
de Chimie,
Center for Green Chemistry and Catalysis, Université de Montréal, C.P. 6128, Succursale Centre-ville, Montréal, Québec H3C 3J7, Canada
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278
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Hoffmann RW. Markovnikov free radical addition reactions, a sleeping beauty kissed to life. Chem Soc Rev 2016; 45:577-83. [PMID: 26753913 DOI: 10.1039/c5cs00423c] [Citation(s) in RCA: 79] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This review covers free radical additions, which are initiated by the formal addition of a hydrogen atom to a C[double bond, length as m-dash]C double bond. These reactions originated in the realms of inorganic chemistry, polymer chemistry, and organic chemistry, whereby barriers between these disciplines impeded the rapid implementation of the findings.
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Affiliation(s)
- Reinhard W Hoffmann
- Fachbereich Chemie der Philipps Universität Marburg, Hans Meerweinstr.4, D-35032 Marburg, Germany.
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279
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Bichovski P, Haas TM, Keller M, Streuff J. Direct conjugate alkylation of α,β-unsaturated carbonyls by TiIII-catalysed reductive umpolung of simple activated alkenes. Org Biomol Chem 2016; 14:5673-82. [DOI: 10.1039/c5ob02631h] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
The title reaction leads to 1,6-difunctionalized products without the requirement of premetallated reagents. Details on scope, selectivity and mechanism are reported.
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Affiliation(s)
- Plamen Bichovski
- Institut für Organische Chemie
- Albert-Ludwigs-Universität Freiburg
- 79104 Freiburg
- Germany
| | - Thomas M. Haas
- Institut für Organische Chemie
- Albert-Ludwigs-Universität Freiburg
- 79104 Freiburg
- Germany
| | - Manfred Keller
- Institut für Organische Chemie
- Albert-Ludwigs-Universität Freiburg
- 79104 Freiburg
- Germany
| | - Jan Streuff
- Institut für Organische Chemie
- Albert-Ludwigs-Universität Freiburg
- 79104 Freiburg
- Germany
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280
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Deng Z, Chen C, Cui S. Fe(iii)-mediated isomerization of α,α-diarylallylic alcohols to ketones via radical 1,2-aryl migration. RSC Adv 2016. [DOI: 10.1039/c6ra20007a] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
An Fe(iii)-mediated radical 1,2-aryl migration of α,α-diarylallylic alcohols for the isomerization to ketones is described.
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Affiliation(s)
- Ziyang Deng
- Institute of Drug Discovery and Development
- College of Pharmaceutical Sciences
- Zhejiang University
- Hangzhou 310058
- P. R. China
| | - Changwei Chen
- Institute of Drug Discovery and Development
- College of Pharmaceutical Sciences
- Zhejiang University
- Hangzhou 310058
- P. R. China
| | - Sunliang Cui
- Institute of Drug Discovery and Development
- College of Pharmaceutical Sciences
- Zhejiang University
- Hangzhou 310058
- P. R. China
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281
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Zhang N, Quan ZJ, Zhang Z, Da YX, Wang XC. Synthesis of stilbene derivatives via visible-light-induced cross-coupling of aryl diazonium salts with nitroalkenes using –NO2 as a leaving group. Chem Commun (Camb) 2016; 52:14234-14237. [DOI: 10.1039/c6cc08182g] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Photocatalytic coupling of nitroalkenes with diazonium salts.
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Affiliation(s)
- Na Zhang
- Key Laboratory of Polymer Materials
- College of Chemistry and Chemical Engineering
- Northwest Normal University
- Lanzhou
- P. R. China
| | - Zheng-Jun Quan
- Key Laboratory of Polymer Materials
- College of Chemistry and Chemical Engineering
- Northwest Normal University
- Lanzhou
- P. R. China
| | - Zhang Zhang
- Key Laboratory of Polymer Materials
- College of Chemistry and Chemical Engineering
- Northwest Normal University
- Lanzhou
- P. R. China
| | - Yu-Xia Da
- Key Laboratory of Polymer Materials
- College of Chemistry and Chemical Engineering
- Northwest Normal University
- Lanzhou
- P. R. China
| | - Xi-Cun Wang
- Key Laboratory of Polymer Materials
- College of Chemistry and Chemical Engineering
- Northwest Normal University
- Lanzhou
- P. R. China
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282
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Zheng J, Qi J, Cui S. Fe-Catalyzed Olefin Hydroamination with Diazo Compounds for Hydrazone Synthesis. Org Lett 2015; 18:128-31. [DOI: 10.1021/acs.orglett.5b03317] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Jing Zheng
- Institute of Drug Discovery
and Design, College of Pharmaceutical Sciences, Zhejiang University, 866 Yuhangtang Road, Hangzhou, Zhejiang 310058, China
| | - Jifeng Qi
- Institute of Drug Discovery
and Design, College of Pharmaceutical Sciences, Zhejiang University, 866 Yuhangtang Road, Hangzhou, Zhejiang 310058, China
| | - Sunliang Cui
- Institute of Drug Discovery
and Design, College of Pharmaceutical Sciences, Zhejiang University, 866 Yuhangtang Road, Hangzhou, Zhejiang 310058, China
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283
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George DT, Kuenstner EJ, Pronin SV. A Concise Approach to Paxilline Indole Diterpenes. J Am Chem Soc 2015; 137:15410-3. [PMID: 26593869 DOI: 10.1021/jacs.5b11129] [Citation(s) in RCA: 81] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
A synthetic approach to paxilline indole diterpenes is described. The route to the pentacyclic core relies on a new regioselective alkenylation of ketones and a tandem radical addition-aldol reaction sequence to access vicinal quaternary stereocenters. Emindole SB, the simplest member of the family, is synthesized in 11 steps from commercially available material to demonstrate the application of this approach.
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Affiliation(s)
- David T George
- Department of Chemistry, University of California , Irvine, California 92697-2025, United States
| | - Eric J Kuenstner
- Department of Chemistry, University of California , Irvine, California 92697-2025, United States
| | - Sergey V Pronin
- Department of Chemistry, University of California , Irvine, California 92697-2025, United States
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284
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Streuff J, Feurer M, Frey G, Steffani A, Kacprzak S, Weweler J, Leijendekker LH, Kratzert D, Plattner DA. Mechanism of the TiIII-Catalyzed Acyloin-Type Umpolung: A Catalyst-Controlled Radical Reaction. J Am Chem Soc 2015; 137:14396-405. [DOI: 10.1021/jacs.5b09223] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Jan Streuff
- Institut für Organische
Chemie, ‡Institut
für Physikalische Chemie, and §Institut für Anorganische
und Analytische Chemie, Albert-Ludwigs-Universität Freiburg, Albertstr.
21, 79104 Freiburg, Germany
| | - Markus Feurer
- Institut für Organische
Chemie, ‡Institut
für Physikalische Chemie, and §Institut für Anorganische
und Analytische Chemie, Albert-Ludwigs-Universität Freiburg, Albertstr.
21, 79104 Freiburg, Germany
| | - Georg Frey
- Institut für Organische
Chemie, ‡Institut
für Physikalische Chemie, and §Institut für Anorganische
und Analytische Chemie, Albert-Ludwigs-Universität Freiburg, Albertstr.
21, 79104 Freiburg, Germany
| | - Alberto Steffani
- Institut für Organische
Chemie, ‡Institut
für Physikalische Chemie, and §Institut für Anorganische
und Analytische Chemie, Albert-Ludwigs-Universität Freiburg, Albertstr.
21, 79104 Freiburg, Germany
| | - Sylwia Kacprzak
- Institut für Organische
Chemie, ‡Institut
für Physikalische Chemie, and §Institut für Anorganische
und Analytische Chemie, Albert-Ludwigs-Universität Freiburg, Albertstr.
21, 79104 Freiburg, Germany
| | - Jens Weweler
- Institut für Organische
Chemie, ‡Institut
für Physikalische Chemie, and §Institut für Anorganische
und Analytische Chemie, Albert-Ludwigs-Universität Freiburg, Albertstr.
21, 79104 Freiburg, Germany
| | - Leonardus H. Leijendekker
- Institut für Organische
Chemie, ‡Institut
für Physikalische Chemie, and §Institut für Anorganische
und Analytische Chemie, Albert-Ludwigs-Universität Freiburg, Albertstr.
21, 79104 Freiburg, Germany
| | - Daniel Kratzert
- Institut für Organische
Chemie, ‡Institut
für Physikalische Chemie, and §Institut für Anorganische
und Analytische Chemie, Albert-Ludwigs-Universität Freiburg, Albertstr.
21, 79104 Freiburg, Germany
| | - Dietmar A. Plattner
- Institut für Organische
Chemie, ‡Institut
für Physikalische Chemie, and §Institut für Anorganische
und Analytische Chemie, Albert-Ludwigs-Universität Freiburg, Albertstr.
21, 79104 Freiburg, Germany
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285
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Ma X, Herzon SB. Non-classical selectivities in the reduction of alkenes by cobalt-mediated hydrogen atom transfer. Chem Sci 2015; 6:6250-6255. [PMID: 30090243 PMCID: PMC6054054 DOI: 10.1039/c5sc02476e] [Citation(s) in RCA: 67] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2015] [Accepted: 08/19/2015] [Indexed: 11/21/2022] Open
Abstract
Classical methods for alkene hydrogenation typically reduce less-substituted or more-strained alkenes, or those in proximity to a directing group, most rapidly. Here we describe a cobalt-mediated hydrogenation protocol that provides complementary selectivities in the reduction of several classes of olefins and alkynes. The selectivity of this reduction derives from a hydrogen atom transfer mechanism, which favors the generation of the more stable alkylradical intermediate. We also report the first alkene hydrobromination, hydroiodination, and hydroselenylation by a hydrogen atom transfer process.
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Affiliation(s)
- Xiaoshen Ma
- Department of Chemistry , Yale University , New Haven , Connecticut 06520 , USA .
| | - Seth B Herzon
- Department of Chemistry , Yale University , New Haven , Connecticut 06520 , USA .
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286
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Streuff J, Gansäuer A. Metal-Catalyzed β-Functionalization of Michael Acceptors through Reductive Radical Addition Reactions. Angew Chem Int Ed Engl 2015; 54:14232-42. [PMID: 26471460 DOI: 10.1002/anie.201505231] [Citation(s) in RCA: 98] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2015] [Indexed: 01/18/2023]
Abstract
Transition-metal-catalyzed radical reactions are becoming increasingly important in modern organic chemistry. They offer fascinating and unconventional ways for connecting molecular fragments that are often complementary to traditional methods. In particular, reductive radical additions to α,β-unsaturated compounds have recently gained substantial attention as a result of their broad applicability in organic synthesis. This Minireview critically discusses the recent landmark achievements in this field in context with earlier reports that laid the foundation for today's developments.
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Affiliation(s)
- Jan Streuff
- Institut für Organische Chemie, Albert-Ludwigs-Universität Freiburg, Albertstrasse 21, 79104 Freiburg (Germany).
| | - Andreas Gansäuer
- Kekulé-Institut für Organische Chemie und Biochemie, Rheinische Friedrich-Wilhelms-Universität Bonn, Gerhard-Domagk-Strasse 1, 53121 Bonn (Germany).
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287
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Streuff J, Gansäuer A. Metallkatalysierte β-Funktionalisierung von Michael-Akzeptoren über reduktive Radikaladditionen. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201505231] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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288
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Catalysis of Radical Reactions: A Radical Chemistry Perspective. Angew Chem Int Ed Engl 2015; 55:58-102. [DOI: 10.1002/anie.201505090] [Citation(s) in RCA: 834] [Impact Index Per Article: 92.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2015] [Indexed: 01/25/2023]
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289
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Studer A, Curran DP. Katalyse von Radikalreaktionen: Konzepte aus Sicht der Radikalchemie. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201505090] [Citation(s) in RCA: 280] [Impact Index Per Article: 31.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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290
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Zhang L, Wang A, Wang W, Huang Y, Liu X, Miao S, Liu J, Zhang T. Co–N–C Catalyst for C–C Coupling Reactions: On the Catalytic Performance and Active Sites. ACS Catal 2015. [DOI: 10.1021/acscatal.5b01223] [Citation(s) in RCA: 223] [Impact Index Per Article: 24.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Leilei Zhang
- State
Key Laboratory of Catalysis, iChEM (Collaborative Innovation Center
of Chemistry for Energy Materials), Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - Aiqin Wang
- State
Key Laboratory of Catalysis, iChEM (Collaborative Innovation Center
of Chemistry for Energy Materials), Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - Wentao Wang
- State
Key Laboratory of Catalysis, iChEM (Collaborative Innovation Center
of Chemistry for Energy Materials), Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - Yanqiang Huang
- State
Key Laboratory of Catalysis, iChEM (Collaborative Innovation Center
of Chemistry for Energy Materials), Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - Xiaoyan Liu
- State
Key Laboratory of Catalysis, iChEM (Collaborative Innovation Center
of Chemistry for Energy Materials), Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - Shu Miao
- State
Key Laboratory of Catalysis, iChEM (Collaborative Innovation Center
of Chemistry for Energy Materials), Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - Jingyue Liu
- State
Key Laboratory of Catalysis, iChEM (Collaborative Innovation Center
of Chemistry for Energy Materials), Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
- Department
of Physics, Arizona State University, Tempe, Arizona 85287, United States
| | - Tao Zhang
- State
Key Laboratory of Catalysis, iChEM (Collaborative Innovation Center
of Chemistry for Energy Materials), Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
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291
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Villa M, Jacobi von Wangelin A. Hydroaminations of Alkenes: A Radical, Revised, and Expanded Version. Angew Chem Int Ed Engl 2015; 54:11906-8. [DOI: 10.1002/anie.201506885] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2015] [Indexed: 01/08/2023]
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292
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Villa M, Jacobi von Wangelin A. Hydroaminierung von Alkenen: eine radikalische, überarbeitete und erweiterte Variante. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201506885] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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293
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Zheng J, Wang D, Cui S. Fe-Catalyzed Reductive Coupling of Unactivated Alkenes with β-Nitroalkenes. Org Lett 2015; 17:4572-5. [PMID: 26352640 DOI: 10.1021/acs.orglett.5b02294] [Citation(s) in RCA: 61] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
An Fe-catalyzed reductive coupling of unactivated alkenes with β-nitroalkenes has been developed. The reaction proceeds through a radical pathway, with β-nitroalkenes serving as the vinylating reagents and the nitro group being cleaved in the process. Therefore, this method provides a viable synthetic approach to valuable secondary- and tertiary-alkylated styrene derivatives. Furthermore, control experiments were conducted and a plausible mechanism is proposed.
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Affiliation(s)
- Jing Zheng
- Institute of Drug Discovery and Design, College of Pharmaceutical Sciences, Zhejiang University , 866 Yuhangtang Road, Hangzhou 310058, China
| | - Dahai Wang
- Institute of Drug Discovery and Design, College of Pharmaceutical Sciences, Zhejiang University , 866 Yuhangtang Road, Hangzhou 310058, China
| | - Sunliang Cui
- Institute of Drug Discovery and Design, College of Pharmaceutical Sciences, Zhejiang University , 866 Yuhangtang Road, Hangzhou 310058, China
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294
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Temperini A, Barattucci A, Bonaccorsi PM, Rosati O, Minuti L. Stereoselective Synthesis of Substituted Tetrahydropyrans and Isochromans by Cyclization of Phenylseleno Alcohols. J Org Chem 2015. [DOI: 10.1021/acs.joc.5b01199] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Andrea Temperini
- Dipartimento
di Scienze Farmaceutiche, Università di Perugia, Via del Liceo
1, 06123 Perugia, Italy
| | - Anna Barattucci
- Dipartimento
di Scienze Chimiche, Università di Messina, Viale F. Stagno
d’Alcontres 31, 98166 Messina, Italy
| | - Paola Maria Bonaccorsi
- Dipartimento
di Scienze Chimiche, Università di Messina, Viale F. Stagno
d’Alcontres 31, 98166 Messina, Italy
| | - Ornelio Rosati
- Dipartimento
di Scienze Farmaceutiche, Università di Perugia, Via del Liceo
1, 06123 Perugia, Italy
| | - Lucio Minuti
- Dipartimento
di Chimica, Biologia e Biotecnologie, Università di Perugia, Via Elce
di Sotto 8, 06123 Perugia, Italy
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295
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Abstract
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A solution
to the classic unsolved problem of olefin hydromethylation
is presented. This highly chemoselective method can tolerate labile
and reactive chemical functionalities and uses a simple set of reagents.
An array of olefins, including mono-, di-, and trisubstituted olefins,
are all smoothly hydromethylated. This mild protocol can be used to
simplify the synthesis of a specific target or to directly “edit”
complex natural products and other advanced materials. The method
is also amenable to the simple installation of radioactive and stable
labeled methyl groups.
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Affiliation(s)
- Hai T Dao
- †Department of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, United States
| | - Chao Li
- †Department of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, United States
| | - Quentin Michaudel
- †Department of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, United States
| | - Brad D Maxwell
- ‡Discovery Chemistry Platforms-Radiochemistry, Bristol-Myers Squibb, Route 206 and Province Line Road, Princeton, New Jersey 08543, United States
| | - Phil S Baran
- †Department of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, United States
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296
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Gui J, Pan CM, Jin Y, Qin T, Lo JC, Lee BJ, Spergel SH, Mertzman ME, Pitts WJ, La Cruz TE, Schmidt MA, Darvatkar N, Natarajan SR, Baran PS. Practical olefin hydroamination with nitroarenes. Science 2015; 348:886-91. [DOI: 10.1126/science.aab0245] [Citation(s) in RCA: 313] [Impact Index Per Article: 34.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2015] [Accepted: 04/07/2015] [Indexed: 12/24/2022]
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297
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Quiclet-Sire B, Zard SZ. Radical Instability in Aid of Efficiency: A Powerful Route to Highly Functional MIDA Boronates. J Am Chem Soc 2015; 137:6762-5. [DOI: 10.1021/jacs.5b03893] [Citation(s) in RCA: 68] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Béatrice Quiclet-Sire
- Laboratoire de Synthèse
Organique, CNRS UMR 7652, Ecole Polytechnique, 91128 Palaiseau
Cedex, France
| | - Samir Z. Zard
- Laboratoire de Synthèse
Organique, CNRS UMR 7652, Ecole Polytechnique, 91128 Palaiseau
Cedex, France
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298
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Cheung CW, Zhurkin FE, Hu X. Z-Selective Olefin Synthesis via Iron-Catalyzed Reductive Coupling of Alkyl Halides with Terminal Arylalkynes. J Am Chem Soc 2015; 137:4932-5. [PMID: 25831473 PMCID: PMC4415033 DOI: 10.1021/jacs.5b01784] [Citation(s) in RCA: 111] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2015] [Indexed: 12/23/2022]
Abstract
Selective catalytic synthesis of Z-olefins has been challenging. Here we describe a method to produce 1,2-disubstituted olefins in high Z selectivity via reductive cross-coupling of alkyl halides with terminal arylalkynes. The method employs inexpensive and nontoxic catalyst (iron(II) bromide) and reductant (zinc). The substrate scope encompasses primary, secondary, and tertiary alkyl halides, and the reaction tolerates a large number of functional groups. The utility of the method is demonstrated in the synthesis of several pharmaceutically relevant molecules. Mechanistic study suggests that the reaction proceeds through an iron-catalyzed anti-selective carbozincation pathway.
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Affiliation(s)
- Chi Wai Cheung
- Laboratory of Inorganic
Synthesis
and Catalysis, Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne
(EPFL), ISIC-LSCI, BCH
3305, Lausanne 1015, Switzerland
| | - Fedor E. Zhurkin
- Laboratory of Inorganic
Synthesis
and Catalysis, Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne
(EPFL), ISIC-LSCI, BCH
3305, Lausanne 1015, Switzerland
| | - Xile Hu
- Laboratory of Inorganic
Synthesis
and Catalysis, Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne
(EPFL), ISIC-LSCI, BCH
3305, Lausanne 1015, Switzerland
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299
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Simonneau A, Oestreich M. Faszinierende Chemie des Wasserstoffatomtransfers auf Alkene inspiriert durch Probleme in Totalsynthesen. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201500557] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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300
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Simonneau A, Oestreich M. Fascinating hydrogen atom transfer chemistry of alkenes inspired by problems in total synthesis. Angew Chem Int Ed Engl 2015; 54:3556-8. [PMID: 25703197 DOI: 10.1002/anie.201500557] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2015] [Indexed: 11/12/2022]
Affiliation(s)
- Antoine Simonneau
- Institut für Chemie, Technische Universität Berlin, Strasse des 17. Juni 115, 10623 Berlin (Germany) http://www.organometallics.tu-berlin.de
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