201
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Wang Y, Li G, Liu H, Tang Z, Cao Y, Zhao G. A tandem annulation with a [1,3]-hydride transfer as the key step leading to isochromans. Chem Commun (Camb) 2017; 53:10652-10655. [DOI: 10.1039/c7cc06144g] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The first [1,3]-hydride transfer/cyclization process for oxacarbenium isomerization.
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Affiliation(s)
- Yingwei Wang
- Department of Pharmaceutical & Biological Engineering
- School of Chemical Engineering
- Sichuan University
- Chengdu
- China
| | - Guangxun Li
- Natural Products Research Center Chengdu Institution of Biology
- Chinese Academy of Science
- Chengdu
- China
| | - Hongxin Liu
- Natural Products Research Center Chengdu Institution of Biology
- Chinese Academy of Science
- Chengdu
- China
| | - Zhuo Tang
- Natural Products Research Center Chengdu Institution of Biology
- Chinese Academy of Science
- Chengdu
- China
| | - Yuan Cao
- Department of Pharmaceutical & Biological Engineering
- School of Chemical Engineering
- Sichuan University
- Chengdu
- China
| | - Gang Zhao
- Department of Pharmaceutical & Biological Engineering
- School of Chemical Engineering
- Sichuan University
- Chengdu
- China
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202
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Abstract
This review defines symmetric molecules from a synthetic perspective and shows various strategies that take advantage of molecular symmetry to construct them.
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Affiliation(s)
- Wen-Ju Bai
- Department of Chemistry
- Stanford University
- Stanford
- USA
| | - Xiqing Wang
- College of Bioscience and Biotechnology
- Yangzhou University
- Yangzhou
- China
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203
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Kumar P, Tripathi D, Sharma BM, Dwivedi N. Transition metal catalysis—a unique road map in the stereoselective synthesis of 1,3-polyols. Org Biomol Chem 2017; 15:733-761. [DOI: 10.1039/c6ob01925k] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
The present review summarizes recent diverse reactions employed in the formation of 1,3-polyols providing an overview of the mechanistic pathway and the enantioselectivity obtained, in terms of the properties of transition metals directly involved in the catalytic transformations and their interaction with various ligands.
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Affiliation(s)
- Pradeep Kumar
- Organic Chemistry Division
- CSIR-National Chemical Laboratory
- Pune 411008
- India
| | - Divya Tripathi
- Organic Chemistry Division
- CSIR-National Chemical Laboratory
- Pune 411008
- India
| | - Brijesh M. Sharma
- Organic Chemistry Division
- CSIR-National Chemical Laboratory
- Pune 411008
- India
| | - Namrata Dwivedi
- Organic Chemistry Division
- CSIR-National Chemical Laboratory
- Pune 411008
- India
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204
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Chelucci G. Ruthenium and osmium complexes in CC bond-forming reactions by borrowing hydrogen catalysis. Coord Chem Rev 2017. [DOI: 10.1016/j.ccr.2016.10.002] [Citation(s) in RCA: 133] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
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205
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Xiao H, Wang G, Krische MJ. Regioselective Hydrohydroxyalkylation of Styrene with Primary Alcohols or Aldehydes via Ruthenium-Catalyzed C-C Bond Forming Transfer Hydrogenation. Angew Chem Int Ed Engl 2016; 55:16119-16122. [PMID: 27910228 PMCID: PMC5189692 DOI: 10.1002/anie.201609056] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2016] [Indexed: 01/05/2023]
Abstract
Transfer hydrogenative coupling of styrene with primary alcohols using the precatalyst HClRu(CO)(PCy3 )2 modified by AgOTf or HBF4 delivers branched or linear adducts from benzylic or aliphatic alcohols, respectively. Related 2-propanol mediated reductive couplings also are described.
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Affiliation(s)
- Hongde Xiao
- University of Texas at Austin, Department of Chemistry, 105 E 24th St. A5300, Austin, TX, 78712-1167, USA
| | - Gang Wang
- 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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206
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Sato H, Bender M, Chen W, Krische MJ. Diols, α-Ketols, and Diones as 22π Components in [2+2+2] Cycloadditions of 1,6-Diynes via Ruthenium(0)-Catalyzed Transfer Hydrogenation. J Am Chem Soc 2016; 138:16244-16247. [DOI: 10.1021/jacs.6b11746] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Affiliation(s)
- Hiroki Sato
- Department of Chemistry, University of Texas at Austin, Austin, Texas 78712, United States
| | - Matthias Bender
- Department of Chemistry, University of Texas at Austin, Austin, Texas 78712, United States
| | - Weijie Chen
- Department of Chemistry, University of Texas at Austin, Austin, Texas 78712, United States
| | - Michael J. Krische
- Department of Chemistry, University of Texas at Austin, Austin, Texas 78712, United States
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207
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Xiao H, Wang G, Krische MJ. Regioselective Hydrohydroxyalkylation of Styrene with Primary Alcohols or Aldehydes via Ruthenium-Catalyzed C−C Bond Forming Transfer Hydrogenation. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201609056] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Hongde Xiao
- University of Texas at Austin; Department of Chemistry; 105 E 24th St. A5300 Austin TX 78712-1167 USA
| | - Gang Wang
- 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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208
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Mastalir M, Glatz M, Pittenauer E, Allmaier G, Kirchner K. Sustainable Synthesis of Quinolines and Pyrimidines Catalyzed by Manganese PNP Pincer Complexes. J Am Chem Soc 2016; 138:15543-15546. [DOI: 10.1021/jacs.6b10433] [Citation(s) in RCA: 244] [Impact Index Per Article: 30.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Matthias Mastalir
- Institute
of Applied Synthetic Chemistry and ‡Institute of Chemical Technologies
and Analytics, Vienna University of Technology, Getreidemarkt 9, A-1060 Wien, Austria
| | - Mathias Glatz
- Institute
of Applied Synthetic Chemistry and ‡Institute of Chemical Technologies
and Analytics, Vienna University of Technology, Getreidemarkt 9, A-1060 Wien, Austria
| | - Ernst Pittenauer
- Institute
of Applied Synthetic Chemistry and ‡Institute of Chemical Technologies
and Analytics, Vienna University of Technology, Getreidemarkt 9, A-1060 Wien, Austria
| | - Günter Allmaier
- Institute
of Applied Synthetic Chemistry and ‡Institute of Chemical Technologies
and Analytics, Vienna University of Technology, Getreidemarkt 9, A-1060 Wien, Austria
| | - Karl Kirchner
- Institute
of Applied Synthetic Chemistry and ‡Institute of Chemical Technologies
and Analytics, Vienna University of Technology, Getreidemarkt 9, A-1060 Wien, Austria
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209
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Mastalir M, Stöger B, Pittenauer E, Puchberger M, Allmaier G, Kirchner K. Air Stable Iron(II) PNP Pincer Complexes as Efficient Catalysts for the Selective Alkylation of Amines with Alcohols. Adv Synth Catal 2016. [DOI: 10.1002/adsc.201600689] [Citation(s) in RCA: 79] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Matthias Mastalir
- Institute of Applied Synthetic Chemistry; Vienna University of Technology; Getreidemarkt 9/163-AC A-1060 Wien Austria
| | - Berthold Stöger
- Institute of Chemical Technologies and Analytics; Vienna University of Technology; Getreidemarkt 9/163-AC A-1060 Wien Austria
| | - Ernst Pittenauer
- Institute of Chemical Technologies and Analytics; Vienna University of Technology; Getreidemarkt 9/163-AC A-1060 Wien Austria
| | - Michael Puchberger
- Institute of Materials Chemistry; Vienna University of Technology; Getreidemarkt 9/163-AC A-1060 Wien Austria
| | - Günter Allmaier
- Institute of Chemical Technologies and Analytics; Vienna University of Technology; Getreidemarkt 9/163-AC A-1060 Wien Austria
| | - Karl Kirchner
- Institute of Applied Synthetic Chemistry; Vienna University of Technology; Getreidemarkt 9/163-AC A-1060 Wien Austria
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210
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Ma L, Paul A, Breugst M, Seidel D. Redox-Neutral Aromatization of Cyclic Amines: Mechanistic Insights and Harnessing of Reactive Intermediates for Amine α- and β-C-H Functionalization. Chemistry 2016; 22:18179-18189. [PMID: 27712000 DOI: 10.1002/chem.201603839] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2016] [Indexed: 01/14/2023]
Abstract
Cyclic amines such as pyrrolidine and piperidine are known to undergo condensations with aldehydes to furnish pyrrole and pyridine derivatives, respectively. A combined experimental and computational study provides detailed insights into the mechanism of pyrrole formation. A number of reactive intermediates (e.g., azomethine ylides, conjugated azomethine ylides, enamines) were intercepted, outlining strategies for circumventing aromatization as a valuable pathway for amine C-H functionalization.
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Affiliation(s)
- Longle Ma
- Department of Chemistry and Chemical Biology, Rutgers, The State University of New Jersey, Piscataway, New Jersey, 08854, USA
| | - Anirudra Paul
- Department of Chemistry and Chemical Biology, Rutgers, The State University of New Jersey, Piscataway, New Jersey, 08854, USA
| | - Martin Breugst
- Department für Chemie, Universität zu Köln, Greinstraße 4, 50939, Köln, Germany
| | - Daniel Seidel
- Department of Chemistry and Chemical Biology, Rutgers, The State University of New Jersey, Piscataway, New Jersey, 08854, USA
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211
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Nguyen KD, Herkommer D, Krische MJ. Enantioselective Formation of All-Carbon Quaternary Centers via C-H Functionalization of Methanol: Iridium-Catalyzed Diene Hydrohydroxymethylation. J Am Chem Soc 2016; 138:14210-14213. [PMID: 27762549 PMCID: PMC5094804 DOI: 10.1021/jacs.6b09333] [Citation(s) in RCA: 117] [Impact Index Per Article: 14.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
The first catalytic enantioselective C-C couplings of methanol (>30 × 106 tons/year) are reported. Insertion of 2-substituted dienes into the methanol C-H bond occurs in a regioselective manner to form all-carbon quaternary centers with excellent levels of enantioselectivity using an iridium-PhanePhos catalyst. Mechanistic studies corroborate a Curtin-Hammett scenario in which methanol dehydrogenation triggers rapid, reversible diene hydrometalation en route to regioisomeric allyliridium-formaldehyde pairs, yet single constitutional isomers are formed.
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Affiliation(s)
- Khoa D. Nguyen
- University of Texas at Austin, Department of Chemistry, Austin, TX 78712, USA
| | - Daniel Herkommer
- University of Texas at Austin, Department of Chemistry, Austin, TX 78712, USA
| | - Michael J. Krische
- University of Texas at Austin, Department of Chemistry, Austin, TX 78712, USA
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212
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Shin I, Hong S, Krische MJ. Total Synthesis of Swinholide A: An Exposition in Hydrogen-Mediated C-C Bond Formation. J Am Chem Soc 2016; 138:14246-14249. [PMID: 27779393 PMCID: PMC5096380 DOI: 10.1021/jacs.6b10645] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Diverse hydrogen-mediated C-C couplings enable construction of the actin-binding marine polyketide swinholide A in only 15 steps (longest linear sequence), roughly half the steps required in two prior total syntheses. The redox-economy, chemo- and stereoselectivity embodied by this new class of C-C couplings are shown to evoke a step-change in efficiency.
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Affiliation(s)
- Inji Shin
- University of Texas at Austin, Department of Chemistry, Austin, TX 78712, USA
| | - Suckchang Hong
- University of Texas at Austin, Department of Chemistry, Austin, TX 78712, USA
| | - Michael J Krische
- University of Texas at Austin, Department of Chemistry, Austin, TX 78712, USA
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213
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Nguyen KD, Park BY, Luong T, Sato H, Garza VJ, Krische MJ. Metal-catalyzed reductive coupling of olefin-derived nucleophiles: Reinventing carbonyl addition. Science 2016; 354:aah5133. [PMID: 27846504 PMCID: PMC5130112 DOI: 10.1126/science.aah5133] [Citation(s) in RCA: 259] [Impact Index Per Article: 32.4] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
α-Olefins are the most abundant petrochemical feedstock beyond alkanes, yet their use in commodity chemical manufacture is largely focused on polymerization and hydroformylation. The development of byproduct-free catalytic C-C bond-forming reactions that convert olefins to value-added products remains an important objective. Here, we review catalytic intermolecular reductive couplings of unactivated and activated olefin-derived nucleophiles with carbonyl partners. These processes represent an alternative to the longstanding use of stoichiometric organometallic reagents in carbonyl addition.
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Affiliation(s)
- Khoa D Nguyen
- Department of Chemistry, University of Texas at Austin, Austin, TX 78712, USA
| | - Boyoung Y Park
- Department of Chemistry, University of Texas at Austin, Austin, TX 78712, USA
| | - Tom Luong
- Department of Chemistry, University of Texas at Austin, Austin, TX 78712, USA
| | - Hiroki Sato
- Department of Chemistry, University of Texas at Austin, Austin, TX 78712, USA
| | - Victoria J Garza
- Department of Chemistry, University of Texas at Austin, Austin, TX 78712, USA
| | - Michael J Krische
- Department of Chemistry, University of Texas at Austin, Austin, TX 78712, USA.
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214
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Feng J, Noack F, Krische MJ. Modular Terpenoid Construction via Catalytic Enantioselective Formation of All-Carbon Quaternary Centers: Total Synthesis of Oridamycin A, Triptoquinones B and C, and Isoiresin. J Am Chem Soc 2016; 138:12364-7. [PMID: 27632643 DOI: 10.1021/jacs.6b08902] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Total syntheses of oridamycin A, triptoquinones B and C, and isoiresin are accomplished from a common intermediate prepared via iridium-catalyzed alcohol C-H tert-(hydroxy)prenylation - a byproduct-free process that forms an all-carbon quaternary stereocenter with excellent control of diastereo- and enantioselectivity.
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Affiliation(s)
- Jiajie Feng
- Department of Chemistry, University of Texas at Austin , Austin, Texas 78712, United States
| | - Florian Noack
- Department of Chemistry, University of Texas at Austin , Austin, Texas 78712, United States
| | - Michael J Krische
- Department of Chemistry, University of Texas at Austin , Austin, Texas 78712, United States
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215
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Park BY, Luong T, Sato H, Krische MJ. Osmium(0)-Catalyzed C-C Coupling of Ethylene and α-Olefins with Diols, Ketols, or Hydroxy Esters via Transfer Hydrogenation. J Org Chem 2016; 81:8585-94. [PMID: 27580269 DOI: 10.1021/acs.joc.6b01923] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Osmium(0) complexes derived from Os3(CO)12 and XPhos (2-dicyclohexylphosphino-2',4',6'-triisopropylbiphenyl) catalyze the C-C coupling of α-hydroxy esters 1a-1i, α-ketols 1j-1o, or 1,2-diols dihydro-1j-1o with ethylene 2a to form ethylated tertiary alcohols 3a-3o. As illustrated in couplings of 1-octene 2b with vicinally dioxygenated reactants 1a, 1b, 1i, 1j, 1k, 1m, higher α-olefins are converted to adducts 4a, 4b, 4i, 4j, 4k, 4m with complete levels of branched regioselectivity. Oxidation level independent C-C coupling is demonstrated by the reaction of 1-octene 2b with diol dihydro-1k, α-ketol 1k, and dione dehydro-1k. Functionalized olefins 2c-2f react with ethyl mandelate 1a to furnish adducts 5a-8a as single regioisomers. The collective data, including deuterium labeling studies, are consistent with a catalytic mechanism involving olefin-dione oxidative coupling to form an oxa-osmacyclopentane, which upon reductive cleavage via hydrogen transfer from the secondary alcohol reactant releases the product of carbinol C-alkylation with regeneration of the ketone. Single-crystal X-ray diffraction data of the dinuclear complex Os2(CO)4(O2CR)2(XPhos)2 and the trinuclear complex Os3(CO)11(XPhos) are reported. These studies suggest increased π-backbonding at the stage of the metal-olefin π-complex plays a critical role in facilitating alkene-carbonyl oxidative coupling, as isostructural ruthenium(0) complexes, which are weaker π-donors, do not catalyze the transformations reported herein.
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Affiliation(s)
- Boyoung Y Park
- Department of Chemistry, University of Texas at Austin , Austin, Texas 78712, United States
| | - Tom Luong
- Department of Chemistry, University of Texas at Austin , Austin, Texas 78712, United States
| | - Hiroki Sato
- Department of Chemistry, University of Texas at Austin , Austin, Texas 78712, United States
| | - Michael J Krische
- Department of Chemistry, University of Texas at Austin , Austin, Texas 78712, United States
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216
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Korkis SE, Burns DJ, Lam HW. Rhodium-Catalyzed Oxidative C–H Allylation of Benzamides with 1,3-Dienes by Allyl-to-Allyl 1,4-Rh(III) Migration. J Am Chem Soc 2016; 138:12252-7. [DOI: 10.1021/jacs.6b06884] [Citation(s) in RCA: 66] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- Stamatis E. Korkis
- School of Chemistry, University of Nottingham, University Park, Nottingham NG7 2RD, United Kingdom
| | - David J. Burns
- School of Chemistry, University of Nottingham, University Park, Nottingham NG7 2RD, United Kingdom
| | - Hon Wai Lam
- School of Chemistry, University of Nottingham, University Park, Nottingham NG7 2RD, United Kingdom
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217
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Ogiwara Y, Miyake M, Kochi T, Kakiuchi F. Syntheses of RuHCl(CO)(PAr3)3 and RuH2(CO)(PAr3)3 Containing Various Triarylphosphines and Their Use for Arylation of Sterically Congested Aromatic C–H Bonds. Organometallics 2016. [DOI: 10.1021/acs.organomet.6b00540] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Yohei Ogiwara
- Department
of Chemistry, Faculty of Science and Technology, Keio University, 3-14-1
Hiyoshi, Kohoku-ku, Yokohama, Kanagawa 223-8522, Japan
| | - Masashi Miyake
- Department
of Chemistry, Faculty of Science and Technology, Keio University, 3-14-1
Hiyoshi, Kohoku-ku, Yokohama, Kanagawa 223-8522, Japan
| | - Takuya Kochi
- Department
of Chemistry, Faculty of Science and Technology, Keio University, 3-14-1
Hiyoshi, Kohoku-ku, Yokohama, Kanagawa 223-8522, Japan
| | - Fumitoshi Kakiuchi
- Department
of Chemistry, Faculty of Science and Technology, Keio University, 3-14-1
Hiyoshi, Kohoku-ku, Yokohama, Kanagawa 223-8522, Japan
- JST, ACT-C, 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan
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218
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Li Y, Liu D, Liu C, Lei A. Oxidative β-Csp3−H Functionalization oftBuOH: A Selective Radical/Radical Cross-Coupling Access to β-Hydroxy Thioethers. Chem Asian J 2016; 11:2246-9. [DOI: 10.1002/asia.201600800] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2016] [Indexed: 11/10/2022]
Affiliation(s)
- Yuxiu Li
- College of Chemistry and Molecular Sciences; the Institute for Advanced Studies (IAS); Wuhan University; Wuhan Hubei 430072 P. R. China
| | - Dong Liu
- College of Chemistry and Molecular Sciences; the Institute for Advanced Studies (IAS); Wuhan University; Wuhan Hubei 430072 P. R. China
| | - Chao Liu
- College of Chemistry and Molecular Sciences; the Institute for Advanced Studies (IAS); Wuhan University; Wuhan Hubei 430072 P. R. China
| | - Aiwen Lei
- College of Chemistry and Molecular Sciences; the Institute for Advanced Studies (IAS); Wuhan University; Wuhan Hubei 430072 P. R. China
- National Research Center for Carbohydrate Synthesis; Jiangxi Normal University; Nanchang 330022 Jiangxi P. R. China
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219
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Liang T, Woo SK, Krische MJ. C-Propargylation Overrides O-Propargylation in Reactions of Propargyl Chloride with Primary Alcohols: Rhodium-Catalyzed Transfer Hydrogenation. Angew Chem Int Ed Engl 2016; 55:9207-11. [PMID: 27321353 PMCID: PMC4965293 DOI: 10.1002/anie.201603575] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2016] [Revised: 05/10/2016] [Indexed: 12/13/2022]
Abstract
The canonical SN 2 behavior displayed by alcohols and activated alkyl halides in basic media (O-alkylation) is superseded by a pathway leading to carbinol C-alkylation under the conditions of rhodium-catalyzed transfer hydrogenation. Racemic and asymmetric propargylations are described.
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Affiliation(s)
- Tao Liang
- University of Texas at Austin, Department of Chemistry, 105 E 24th St. (A5300), Austin, TX, 78712-1167, USA
| | - Sang Kook Woo
- 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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220
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Mastalir M, Glatz M, Gorgas N, Stöger B, Pittenauer E, Allmaier G, Veiros LF, Kirchner K. Divergent Coupling of Alcohols and Amines Catalyzed by Isoelectronic Hydride MnIand FeIIPNP Pincer Complexes. Chemistry 2016; 22:12316-20. [DOI: 10.1002/chem.201603148] [Citation(s) in RCA: 188] [Impact Index Per Article: 23.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2016] [Indexed: 12/20/2022]
Affiliation(s)
- Matthias Mastalir
- Institute of Applied Synthetic Chemistry; Vienna University of Technology; Getreidemarkt 9 1060 Wien Austria
| | - Mathias Glatz
- Institute of Applied Synthetic Chemistry; Vienna University of Technology; Getreidemarkt 9 1060 Wien Austria
| | - Nikolaus Gorgas
- Institute of Applied Synthetic Chemistry; Vienna University of Technology; Getreidemarkt 9 1060 Wien Austria
| | - Berthold Stöger
- Institute of Chemical Technologies and Analytics; Vienna University of Technology; Getreidemarkt 9 1060 Wien Austria
| | - Ernst Pittenauer
- Institute of Chemical Technologies and Analytics; Vienna University of Technology; Getreidemarkt 9 1060 Wien Austria
| | - Günter Allmaier
- Institute of Chemical Technologies and Analytics; Vienna University of Technology; Getreidemarkt 9 1060 Wien Austria
| | - Luis F. Veiros
- Centro de Química Estrutural; Instituto Superior Técnico; Universidade de Lisboa; Av. Rovisco Pais No. 1 1049-001 Lisboa Portugal
| | - Karl Kirchner
- Institute of Applied Synthetic Chemistry; Vienna University of Technology; Getreidemarkt 9 1060 Wien Austria
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221
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Wang G, Krische MJ. Total Synthesis of (+)-SCH 351448: Efficiency via Chemoselectivity and Redox-Economy Powered by Metal Catalysis. J Am Chem Soc 2016; 138:8088-91. [PMID: 27337561 PMCID: PMC4935581 DOI: 10.1021/jacs.6b04917] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
The polyketide natural product (+)-SCH 351448, a macrodiolide ionophore bearing 14 stereogenic centers, is prepared in 14 steps (LLS). In eight prior syntheses, 22-32 steps were required. Multiple chemoselective and redox-economic functional group interconversions collectively contribute to a step-change in efficiency.
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Affiliation(s)
- Gang Wang
- University of Texas at Austin, Department of Chemistry, Austin, TX 78712, USA
| | - Michael J. Krische
- University of Texas at Austin, Department of Chemistry, Austin, TX 78712, USA
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222
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Mastalir M, Tomsu G, Pittenauer E, Allmaier G, Kirchner K. Co(II) PCP Pincer Complexes as Catalysts for the Alkylation of Aromatic Amines with Primary Alcohols. Org Lett 2016; 18:3462-5. [DOI: 10.1021/acs.orglett.6b01647] [Citation(s) in RCA: 143] [Impact Index Per Article: 17.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Matthias Mastalir
- Institute
of Applied Synthetic Chemistry and ‡Institute of Chemical Technologies
and Analytics, Vienna University of Technology, Getreidemarkt 9/163-AC, A-1060 Wien, Austria
| | - Gerald Tomsu
- Institute
of Applied Synthetic Chemistry and ‡Institute of Chemical Technologies
and Analytics, Vienna University of Technology, Getreidemarkt 9/163-AC, A-1060 Wien, Austria
| | - Ernst Pittenauer
- Institute
of Applied Synthetic Chemistry and ‡Institute of Chemical Technologies
and Analytics, Vienna University of Technology, Getreidemarkt 9/163-AC, A-1060 Wien, Austria
| | - Günter Allmaier
- Institute
of Applied Synthetic Chemistry and ‡Institute of Chemical Technologies
and Analytics, Vienna University of Technology, Getreidemarkt 9/163-AC, A-1060 Wien, Austria
| | - Karl Kirchner
- Institute
of Applied Synthetic Chemistry and ‡Institute of Chemical Technologies
and Analytics, Vienna University of Technology, Getreidemarkt 9/163-AC, A-1060 Wien, Austria
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223
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Torigoe T, Ohmura T, Suginome M. Iridium-Catalyzed Intramolecular Methoxy C−H Addition to Carbon-Carbon Triple Bonds: Direct Synthesis of 3-Substituted Benzofurans from o
-Methoxyphenylalkynes. Chemistry 2016; 22:10415-9. [DOI: 10.1002/chem.201602152] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2016] [Indexed: 02/04/2023]
Affiliation(s)
- Takeru Torigoe
- Department of Synthetic Chemistry and Biological Chemistry; Graduate School of Engineering; Kyoto University, Katsura, Nishikyo-ku; Kyoto 615-8510 Japan
| | - Toshimichi Ohmura
- Department of Synthetic Chemistry and Biological Chemistry; Graduate School of Engineering; Kyoto University, Katsura, Nishikyo-ku; Kyoto 615-8510 Japan
| | - Michinori Suginome
- Department of Synthetic Chemistry and Biological Chemistry; Graduate School of Engineering; Kyoto University, Katsura, Nishikyo-ku; Kyoto 615-8510 Japan
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224
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Abstract
This Account presents the development of the iridium-catalyzed isomerization of primary allylic alcohols in our laboratory over the past 8 years. Our initial interest was driven by the long-standing challenge associated with the development of a general catalyst even for the nonasymmetric version of this seemingly simple chemical transformation. The added value of the aldehyde products and the possibility to rapidly generate molecular complexity from readily accessible allylic alcohols upon a redox-economical isomerization reaction were additional sources of motivation. Certainly influenced by the success story of the related isomerization of allylic amines, most catalysts developed for the selective isomerization of allylic alcohols were focused on rhodium as a transition metal of choice. Our approach has been based on the commonly accepted precept that hydrogenation and isomerization are often competing processes, with the latter being usually suppressed in favor of the former. The cationic iridium complexes [(Cy3P)(pyridine)Ir(cod)]X developed by Crabtree (X = PF6) and Pfaltz (X = BArF) are usually considered as the most versatile catalysts for the hydrogenation of allylic alcohols. Using molecular hydrogen to generate controlled amounts of the active form of these complexes but performing the reaction in the absence of molecular hydrogen enabled deviation from the typical hydrogenation manifold and favored exclusively the isomerization of allylic alcohols into aldehydes. Isotopic labeling and crossover experiments revealed the intermolecular nature of the process. Systematic variation of the ligand on the iridium center allowed us to identify the structural features beneficial for catalytic activity. Subsequently, three generations of chiral catalysts have been investigated and enabled us to reach excellent levels of enantioselectivity for a wide range of 3,3-disubstituted aryl/alkyl and alkyl/alkyl primary allylic alcohols leading to β-chiral aldehydes. The combination of the isomerization reaction with enamine catalysis in a sequential process gave access to α,β-chiral aldehydes in high diastereomeric ratio and excellent enantioselectivity. Catalyst-controlled diastereoselective isomerization of stereochemically complex steroid scaffolds has been achieved, giving access indifferently to derivatives with the natural and unnatural C20 configuration, a long-standing challenge in the field. Structural diversification at close proximity of the reactive site and within the polycyclic domain served to further demonstrate the generality and the potential of the method. Models based on quadrant diagrams enabled rationalization of the high levels of enantio- and diastereocontrol obtained in the isomerization of allylic alcohols.
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Affiliation(s)
- Houhua Li
- Department of Organic Chemistry, University of Geneva, 30 quai Ernest Ansermet, 1211 Geneva, Switzerland
| | - Clément Mazet
- Department of Organic Chemistry, University of Geneva, 30 quai Ernest Ansermet, 1211 Geneva, Switzerland
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225
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Liang T, Woo SK, Krische MJ. C
‐Propargylation Overrides
O
‐Propargylation in Reactions of Propargyl Chloride with Primary Alcohols: Rhodium‐Catalyzed Transfer Hydrogenation. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201603575] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Tao Liang
- University of Texas at AustinDepartment of Chemistry 105 E 24th St. (A5300) Austin TX 78712-1167 USA
| | - Sang Kook Woo
- University of Texas at AustinDepartment of Chemistry 105 E 24th St. (A5300) Austin TX 78712-1167 USA
| | - Michael J. Krische
- University of Texas at AustinDepartment of Chemistry 105 E 24th St. (A5300) Austin TX 78712-1167 USA
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226
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Tan FL, Song RJ, Hu M, Li JH. Metal-Free Oxidative 1,2-Arylmethylation Cascades of N-(Arylsulfonyl)acrylamides Using Peroxides as the Methyl Resource. Org Lett 2016; 18:3198-201. [PMID: 27286238 DOI: 10.1021/acs.orglett.6b01419] [Citation(s) in RCA: 56] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
A new, metal-free oxidative 1,2-arylmethylation cascades of N-(arylsulfonyl)acrylamides for the assembly of 2,2-disubstituted-N-arylbutanamides containing an all-carbon quaternary center is presented. This reaction enables the one-step formation of two new C-C bonds through a sequence of methylation/1,4-aryl migration/desulfonylation using an organic peroxide as the methyl resource with a broad substrate scope and excellent functional group tolerance.
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Affiliation(s)
- Fang-Lin Tan
- State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University , Changsha 410082, China
| | - Ren-Jie Song
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University , Nanchang 330063, China
| | - Ming Hu
- State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University , Changsha 410082, China
| | - Jin-Heng Li
- State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University , Changsha 410082, China.,Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University , Nanchang 330063, China
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227
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Schlepphorst C, Maji B, Glorius F. Ruthenium-NHC Catalyzed α-Alkylation of Methylene Ketones Provides Branched Products through Borrowing Hydrogen Strategy. ACS Catal 2016. [DOI: 10.1021/acscatal.6b01351] [Citation(s) in RCA: 109] [Impact Index Per Article: 13.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Christoph Schlepphorst
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität Münster, Corrensstrasse 40, 48149 Münster, Germany
| | - Biplab Maji
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität Münster, Corrensstrasse 40, 48149 Münster, Germany
| | - Frank Glorius
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität Münster, Corrensstrasse 40, 48149 Münster, Germany
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228
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Perez F, Oda S, Geary LM, Krische MJ. Ruthenium-Catalyzed Transfer Hydrogenation for C-C Bond Formation: Hydrohydroxyalkylation and Hydroaminoalkylation via Reactant Redox Pairs. Top Curr Chem (Cham) 2016; 374:35. [PMID: 27573275 DOI: 10.1007/s41061-016-0028-0] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2016] [Accepted: 04/20/2016] [Indexed: 12/12/2022]
Abstract
Merging the chemistry of transfer hydrogenation and carbonyl or imine addition, a broad new family of redox-neutral or reductive hydrohydroxyalkylations and hydroaminomethylations have been developed. In these processes, hydrogen redistribution between alcohols and π-unsaturated reactants is accompanied by C-C bond formation, enabling direct conversion of lower alcohols to higher alcohols. Similarly, hydrogen redistribution between amines to π-unsaturated reactants results in direct conversion of lower amines to higher amines. Alternatively, equivalent products of hydrohydroxyalkylation and hydroaminomethylation may be generated through the reaction of carbonyl compounds or imines with π-unsaturated reactants under the conditions of 2-propanol-mediated reductive coupling. Finally, using vicinally dioxygenated reactants, that is, diol, ketols, or diones, successive transfer hydrogenative coupling occurs to generate 2 C-C bonds, resulting in products of formal [4+2] cycloaddition.
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Affiliation(s)
- Felix Perez
- Department of Chemistry, University of Texas at Austin, 105 E 24th St., A5300, Austin, TX, 78712-1167, USA
| | - Susumu Oda
- Department of Chemistry, University of Texas at Austin, 105 E 24th St., A5300, Austin, TX, 78712-1167, USA
| | - Laina M Geary
- Department of Chemistry, University of Texas at Austin, 105 E 24th St., A5300, Austin, TX, 78712-1167, USA.,Department of Chemistry, University of Nevada, 1664 N Virginia St., Reno, NV, 89557, 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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229
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Bandar J, Ascic E, Buchwald SL. Enantioselective CuH-Catalyzed Reductive Coupling of Aryl Alkenes and Activated Carboxylic Acids. J Am Chem Soc 2016; 138:5821-4. [PMID: 27121395 PMCID: PMC4866599 DOI: 10.1021/jacs.6b03086] [Citation(s) in RCA: 77] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2016] [Indexed: 12/19/2022]
Abstract
A new method for the enantioselective reductive coupling of aryl alkenes with activated carboxylic acid derivatives via copper hydride catalysis is described. Dual catalytic cycles are proposed, with a relatively fast enantioselective hydroacylation cycle followed by a slower diastereoselective ketone reduction cycle. Symmetrical aryl carboxyclic anhydrides provide access to enantioenriched α-substituted ketones or alcohols with excellent stereoselectivity and functional group tolerance.
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Affiliation(s)
- Jeffrey
S. Bandar
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Erhad Ascic
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Stephen L. Buchwald
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
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230
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Feng J, Kasun ZA, Krische MJ. Enantioselective Alcohol C-H Functionalization for Polyketide Construction: Unlocking Redox-Economy and Site-Selectivity for Ideal Chemical Synthesis. J Am Chem Soc 2016; 138:5467-78. [PMID: 27113543 PMCID: PMC4871165 DOI: 10.1021/jacs.6b02019] [Citation(s) in RCA: 125] [Impact Index Per Article: 15.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
The development and application of stereoselective and site-selective catalytic methods that directly convert lower alcohols to higher alcohols are described. These processes merge the characteristics of transfer hydrogenation and carbonyl addition, exploiting alcohols and π-unsaturated reactants as redox pairs, which upon hydrogen transfer generate transient carbonyl-organometal pairs en route to products of C-C coupling. Unlike classical carbonyl additions, stoichiometric organometallic reagents and discrete alcohol-to-carbonyl redox reactions are not required. Additionally, due to a kinetic preference for primary alcohol dehydrogenation, the site-selective modification of glycols and higher polyols is possible, streamlining or eliminating use of protecting groups. The total syntheses of several iconic type I polyketide natural products were undertaken using these methods. In each case, the target compounds were prepared in significantly fewer steps than previously achieved.
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Affiliation(s)
- Jiajie Feng
- University of Texas at Austin, Department of Chemistry, Austin, TX 78712, USA
| | - Zachary A. Kasun
- University of Texas at Austin, Department of Chemistry, Austin, TX 78712, USA
| | - Michael J. Krische
- University of Texas at Austin, Department of Chemistry, Austin, TX 78712, USA
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231
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Abstract
The enantioselective, intermolecular hydroallylation of vinylarenes employing allylic phosphate electrophiles has been achieved through a copper hydride catalyzed process. The protocol described herein can be applied to a diverse set of vinylarene substrates and allows for the installation of the parent allyl group as well as a range of 2-substituted allylic fragments.
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Affiliation(s)
- Yi-Ming Wang
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Stephen L. Buchwald
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
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232
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Nguyen KD, Herkommer D, Krische MJ. Ruthenium-BINAP Catalyzed Alcohol C-H tert-Prenylation via 1,3-Enyne Transfer Hydrogenation: Beyond Stoichiometric Carbanions in Enantioselective Carbonyl Propargylation. J Am Chem Soc 2016; 138:5238-41. [PMID: 27079149 DOI: 10.1021/jacs.6b02279] [Citation(s) in RCA: 75] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
The chiral ruthenium complex formed in situ from (TFA)2Ru(CO)(PPh3)2 and (R)-BINAP is found to catalyze the enantioselective C-C coupling of diverse primary alcohols with the 1,3-enyne, TMSC≡CC(Me)═CH2, to form secondary homopropargyl alcohols bearing gem-dimethyl groups. All reagents for this byproduct-free coupling are inexpensive and commercially available, making this protocol a practical alternative to stoichiometric carbanions in enantioselective carbonyl reverse prenylation.
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Affiliation(s)
- Khoa D Nguyen
- University of Texas at Austin , Department of Chemistry, Austin, Texas 78712, United States
| | - Daniel Herkommer
- University of Texas at Austin , Department of Chemistry, Austin, Texas 78712, United States
| | - Michael J Krische
- University of Texas at Austin , Department of Chemistry, Austin, Texas 78712, United States
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233
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Katahara S, Kobayashi S, Fujita K, Matsumoto T, Sato T, Chida N. An Iridium-Catalyzed Reductive Approach to Nitrones from N-Hydroxyamides. J Am Chem Soc 2016; 138:5246-9. [DOI: 10.1021/jacs.6b02324] [Citation(s) in RCA: 86] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Seiya Katahara
- Department of Applied Chemistry,
Faculty of Science and Technology, Keio University, 3-14-1, Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan
| | - Shoichiro Kobayashi
- Department of Applied Chemistry,
Faculty of Science and Technology, Keio University, 3-14-1, Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan
| | - Kanami Fujita
- Department of Applied Chemistry,
Faculty of Science and Technology, Keio University, 3-14-1, Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan
| | - Tsutomu Matsumoto
- Department of Applied Chemistry,
Faculty of Science and Technology, Keio University, 3-14-1, Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan
| | - Takaaki Sato
- Department of Applied Chemistry,
Faculty of Science and Technology, Keio University, 3-14-1, Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan
| | - Noritaka Chida
- Department of Applied Chemistry,
Faculty of Science and Technology, Keio University, 3-14-1, Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan
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234
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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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235
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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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236
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Perez F, Waldeck AR, Krische MJ. Total Synthesis of Cryptocaryol A by Enantioselective Iridium-Catalyzed Alcohol C-H Allylation. Angew Chem Int Ed Engl 2016; 55:5049-52. [PMID: 27079820 PMCID: PMC4834877 DOI: 10.1002/anie.201600591] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2016] [Indexed: 11/06/2022]
Abstract
The polyketide natural product cryptocaryol A is prepared in 8 steps via iridium catalyzed enantioselective diol double C-H allylation, which directly generates an acetate-based triketide stereodiad. In 4 previously reported total syntheses, 17-28 steps were required.
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Affiliation(s)
- Felix Perez
- University of Texas at Austin, Department of Chemistry, 105 E 24th St. (A5300), Austin, TX, 78712-1167, USA
| | - Andrew R Waldeck
- 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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237
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Kang Y, Richers MT, Sawicki CH, Seidel D. C-H functionalization of cyclic amines: redox-annulations with α,β-unsaturated carbonyl compounds. Chem Commun (Camb) 2016; 51:10648-51. [PMID: 26051897 DOI: 10.1039/c5cc03390j] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Cyclic amines such as pyrrolidine and 1,2,3,4-tetrahydroisoquinoline undergo redox-annulations with α,β-unsaturated aldehydes and ketones. Carboxylic acid promoted generation of a conjugated azomethine ylide is followed by 6π-electrocylization, and, in some cases, tautomerization. The resulting ring-fused pyrrolines are readily oxidized to the corresponding pyrroles or reduced to pyrrolidines.
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Affiliation(s)
- YoungKu Kang
- Department of Chemistry and Chemical Biology, Rutgers, The State University of New Jersey, Piscataway, New Jersey 08854, USA.
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238
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Garza VJ, Krische MJ. Hydroxymethylation beyond Carbonylation: Enantioselective Iridium-Catalyzed Reductive Coupling of Formaldehyde with Allylic Acetates via Enantiotopic π-Facial Discrimination. J Am Chem Soc 2016; 138:3655-8. [PMID: 26958737 PMCID: PMC4924615 DOI: 10.1021/jacs.6b01078] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Chiral iridium complexes modified by SEGPHOS catalyze the 2-propanol-mediated reductive coupling of branched allylic acetates 1a-1o with formaldehyde to form primary homoallylic alcohols 2a-2o with excellent control of regio- and enantioselectivity. These processes, which rely on enantiotopic π-facial discrimination of σ-allyliridium intermediates, represent the first examples of enantioselective formaldehyde C-C coupling beyond aldol addition.
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Affiliation(s)
- Victoria J. Garza
- University of Texas at Austin, Department of Chemistry, Austin, TX 78712, USA
| | - Michael J. Krische
- University of Texas at Austin, Department of Chemistry, Austin, TX 78712, USA
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239
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Perez F, Waldeck AR, Krische MJ. Total Synthesis of Cryptocaryol A by Enantioselective Iridium-Catalyzed Alcohol C−H Allylation. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201600591] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Felix Perez
- University of Texas at Austin; Department of Chemistry; 105 E 24th St. (A5300) Austin TX 78712-1167 USA
| | - Andrew R. Waldeck
- 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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240
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Abstract
![]()
Benzo[a]quinolizine-2-one derivatives are readily
assembled from 1,2,3,4-tetrahydroisoquinoline and β-ketoaldehydes
by means of a new intramolecular redox-Mannich process. These reactions
are promoted by simple acetic acid and are thought to involve azomethine
ylides as reactive intermediates.
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Affiliation(s)
- Weijie Chen
- Department of Chemistry and Chemical Biology, Rutgers, The State University of New Jersey , Piscataway, New Jersey 08854, United States
| | - Daniel Seidel
- Department of Chemistry and Chemical Biology, Rutgers, The State University of New Jersey , Piscataway, New Jersey 08854, United States
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241
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Iwasaki T, Min X, Fukuoka A, Kuniyasu H, Kambe N. Nickel‐Catalyzed Dimerization and Alkylarylation of 1,3‐Dienes with Alkyl Fluorides and Aryl Grignard Reagents. Angew Chem Int Ed Engl 2016; 55:5550-4. [DOI: 10.1002/anie.201601126] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2016] [Indexed: 12/14/2022]
Affiliation(s)
- Takanori Iwasaki
- Department of Applied Chemistry Graduate School of Engineering Osaka University Suita Osaka 565-0871 Japan
| | - Xin Min
- Department of Applied Chemistry Graduate School of Engineering Osaka University Suita Osaka 565-0871 Japan
| | - Asuka Fukuoka
- Department of Applied Chemistry Graduate School of Engineering Osaka University Suita Osaka 565-0871 Japan
| | - Hitoshi Kuniyasu
- Department of Applied Chemistry Graduate School of Engineering Osaka University Suita Osaka 565-0871 Japan
| | - Nobuaki Kambe
- Department of Applied Chemistry Graduate School of Engineering Osaka University Suita Osaka 565-0871 Japan
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242
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Iwasaki T, Min X, Fukuoka A, Kuniyasu H, Kambe N. Nickel‐Catalyzed Dimerization and Alkylarylation of 1,3‐Dienes with Alkyl Fluorides and Aryl Grignard Reagents. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201601126] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Takanori Iwasaki
- Department of Applied Chemistry Graduate School of Engineering Osaka University Suita Osaka 565-0871 Japan
| | - Xin Min
- Department of Applied Chemistry Graduate School of Engineering Osaka University Suita Osaka 565-0871 Japan
| | - Asuka Fukuoka
- Department of Applied Chemistry Graduate School of Engineering Osaka University Suita Osaka 565-0871 Japan
| | - Hitoshi Kuniyasu
- Department of Applied Chemistry Graduate School of Engineering Osaka University Suita Osaka 565-0871 Japan
| | - Nobuaki Kambe
- Department of Applied Chemistry Graduate School of Engineering Osaka University Suita Osaka 565-0871 Japan
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243
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Tao ZL, Adili A, Shen HC, Han ZY, Gong LZ. Catalytic Enantioselective Assembly of Homoallylic Alcohols from Dienes, Aryldiazonium Salts, and Aldehydes. Angew Chem Int Ed Engl 2016; 55:4322-6. [DOI: 10.1002/anie.201600148] [Citation(s) in RCA: 58] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2016] [Indexed: 12/13/2022]
Affiliation(s)
- Zhong-Lin Tao
- Hefei National Laboratory for Physical Sciences at Microscale and Department of Chemistry; University of Science and Technology of China; Hefei 230026 China
| | - Alafate Adili
- Hefei National Laboratory for Physical Sciences at Microscale and Department of Chemistry; University of Science and Technology of China; Hefei 230026 China
| | - Hong-Cheng Shen
- Hefei National Laboratory for Physical Sciences at Microscale and Department of Chemistry; University of Science and Technology of China; Hefei 230026 China
| | - Zhi-Yong Han
- Hefei National Laboratory for Physical Sciences at Microscale and Department of Chemistry; University of Science and Technology of China; Hefei 230026 China
| | - Liu-Zhu Gong
- Hefei National Laboratory for Physical Sciences at Microscale and Department of Chemistry; University of Science and Technology of China; Hefei 230026 China
- Collaborative Innovation Center of Chemical Science and Engineering; Tianjin China
- High Magnetic Field Laboratory; Hefei Institutes of Physical Science, CAS; Hefei 230031 China
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Tao ZL, Adili A, Shen HC, Han ZY, Gong LZ. Catalytic Enantioselective Assembly of Homoallylic Alcohols from Dienes, Aryldiazonium Salts, and Aldehydes. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201600148] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Zhong-Lin Tao
- Hefei National Laboratory for Physical Sciences at Microscale and Department of Chemistry; University of Science and Technology of China; Hefei 230026 China
| | - Alafate Adili
- Hefei National Laboratory for Physical Sciences at Microscale and Department of Chemistry; University of Science and Technology of China; Hefei 230026 China
| | - Hong-Cheng Shen
- Hefei National Laboratory for Physical Sciences at Microscale and Department of Chemistry; University of Science and Technology of China; Hefei 230026 China
| | - Zhi-Yong Han
- Hefei National Laboratory for Physical Sciences at Microscale and Department of Chemistry; University of Science and Technology of China; Hefei 230026 China
| | - Liu-Zhu Gong
- Hefei National Laboratory for Physical Sciences at Microscale and Department of Chemistry; University of Science and Technology of China; Hefei 230026 China
- Collaborative Innovation Center of Chemical Science and Engineering; Tianjin China
- High Magnetic Field Laboratory; Hefei Institutes of Physical Science, CAS; Hefei 230031 China
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Abstract
Pyrrolidine and 1,2,3,4-tetrahydroisoquinoline (THIQ) undergo redox-neutral α-amidation with concurrent N-alkylation upon reaction with aromatic aldehydes and isocyanides. Reactions are promoted by acetic acid and represent a new variant of the Ugi reaction.
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Affiliation(s)
- Zhengbo Zhu
- Department of Chemistry and Chemical Biology, Rutgers, The State University of New Jersey, Piscataway, New Jersey 08854, United States
| | - Daniel Seidel
- Department of Chemistry and Chemical Biology, Rutgers, The State University of New Jersey, Piscataway, New Jersey 08854, United States
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246
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Saxena A, Perez F, Krische MJ. Ruthenium(0)-Catalyzed [4+2] Cycloaddition of Acetylenic Aldehydes with α-Ketols: Convergent Construction of Angucycline Ring Systems. Angew Chem Int Ed Engl 2016; 55:1493-7. [PMID: 26663806 PMCID: PMC4718903 DOI: 10.1002/anie.201509646] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2015] [Revised: 11/13/2015] [Indexed: 11/09/2022]
Abstract
Ruthenium(0) complexes modified by CyJohnPhos or RuPhos catalyze the successive C-C coupling of acetylenic aldehydes with α-ketols to form [4+2] cycloadducts as single diastereomers. This method enables convergent construction of type II polyketide ring systems of the angucycline class.
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Affiliation(s)
- Aakarsh Saxena
- University of Texas at Austin, Department of Chemistry, 105 E 24th St. A5300, Austin, TX, 78712-1167, USA
| | - Felix Perez
- 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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247
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Shin I, Krische MJ. Formal Synthesis of Premisakinolide A and C(19)-C(32) of Swinholide A via Site-Selective C-H Allylation and Crotylation of Unprotected Diols. Org Lett 2016; 17:4686-9. [PMID: 26375150 DOI: 10.1021/acs.orglett.5b02056] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Using stereo- and site-selective C-H allylation and crotylation of unprotected diols, an intermediate in the synthesis of premisakinolide A (bistheonellic acid B) that was previously made in 16-27 (LLS) steps is now prepared in only nine steps. This fragment also represents a synthesis of C(19)-C(32) of the actin-binding macrodiolide swinholide A.
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Affiliation(s)
- Inji Shin
- Department of Chemistry and Biochemistry, University of Texas at Austin , Austin, Texas 78712, United States
| | - Michael J Krische
- Department of Chemistry and Biochemistry, University of Texas at Austin , Austin, Texas 78712, United States
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248
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Zhu S, Niljianskul N, Buchwald SL. A direct approach to amines with remote stereocentres by enantioselective CuH-catalysed reductive relay hydroamination. Nat Chem 2016; 8:144-50. [PMID: 26791897 PMCID: PMC4724644 DOI: 10.1038/nchem.2418] [Citation(s) in RCA: 96] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2015] [Accepted: 11/11/2015] [Indexed: 01/17/2023]
Abstract
Amines with remote stereocenters (stereocenters that are three or more bonds away from the C–N bond) are important structural elements in many pharmaceutical agents and natural products. However, previously reported methods to prepare these compounds in an enantioselective manner are indirect and require multistep synthesis. Here we report a copper hydride-catalysed, enantioselective synthesis of γ- or δ-chiral amines from readily available allylic alcohols, esters, and ethers using a reductive relay hydroamination strategy (a net reductive process in which an amino group is installed at a site remote from the original C–C double bond). The protocol was suitable for substrates containing a wide range of functional groups and provided remote chiral amine products with high levels of regio- and enantioselectivity. Sequential amination of substrates containing several carbon-carbon double bonds could be achieved, demonstrating the high chemoselectivity of this process.
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Affiliation(s)
- Shaolin Zhu
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
| | - Nootaree Niljianskul
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
| | - Stephen L Buchwald
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
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249
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Oda S, Franke J, Krische MJ. Diene hydroaminomethylation via ruthenium-catalyzed C-C bond forming transfer hydrogenation: beyond carbonylation. Chem Sci 2016; 7:136-141. [PMID: 29861974 PMCID: PMC5950558 DOI: 10.1039/c5sc03854e] [Citation(s) in RCA: 100] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2015] [Accepted: 11/02/2015] [Indexed: 11/21/2022] Open
Abstract
Under the conditions of ruthenium catalyzed transfer hydrogenation using 2-propanol as terminal reductant, 1,3-dienes engage in reductive C-C coupling with formaldimines obtained in situ from 1,3,5-tris(aryl)-hexahydro-1,3,5-triazines to form homoallylic amines. Deuterium labelling studies corroborate a mechanism involving reversible diene hydroruthenation to form an allylruthenium complex that engages in turn-over limiting imine addition. Protonolysis of the resulting amidoruthenium species releases product and delivers a ruthenium alkoxide, which upon β-hydride elimination closes the catalytic cycle. These transformations, which include enantioselective variants, represent the first examples of diene hydroaminomethylation.
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Affiliation(s)
- Susumu Oda
- Department of Chemistry , University of Texas at Austin , Austin , Texas , 78712 USA .
| | - Jana Franke
- Department of Chemistry , University of Texas at Austin , Austin , Texas , 78712 USA .
| | - Michael J Krische
- Department of Chemistry , University of Texas at Austin , Austin , Texas , 78712 USA .
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250
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Shin I, Krische MJ. Asymmetric Iridium-Catalyzed C-C Coupling of Chiral Diols via Site-Selective Redox-Triggered Carbonyl Addition. Top Curr Chem (Cham) 2016; 372:85-101. [PMID: 26187028 PMCID: PMC4716893 DOI: 10.1007/128_2015_651] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022]
Abstract
Cyclometalated π-allyliridium C,O-benzoate complexes modified by axially chiral chelating phosphine ligands display a pronounced kinetic preference for primary alcohol dehydrogenation, enabling highly site-selective redox-triggered carbonyl additions of chiral primary-secondary 1,3-diols with exceptional levels of catalyst-directed diastereoselectivity. Unlike conventional methods for carbonyl allylation, the present redox-triggered alcohol C-H functionalizations bypass the use of protecting groups, premetalated reagents, and discrete alcohol-to-aldehyde redox reactions.
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Affiliation(s)
- Inji Shin
- Department of Chemistry, University of Texas at Austin, 1 University Station - A5300, Austin, TX, 78712-1167, USA
| | - Michael J Krische
- Department of Chemistry, University of Texas at Austin, 1 University Station - A5300, Austin, TX, 78712-1167, USA.
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