1
|
Kramm F, Ullwer F, Klinnert B, Zheng M, Plietker B. Iron-Catalyzed Cycloisomerization and C-C Bond Activation to Access Non-canonical Tricyclic Cyclobutanes. Angew Chem Int Ed Engl 2022; 61:e202205169. [PMID: 35818786 PMCID: PMC9546230 DOI: 10.1002/anie.202205169] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2022] [Indexed: 11/15/2022]
Abstract
Cycloisomerizations are powerful skeletal rearrangements that allow the construction of complex molecular architectures in an atom-economic way. We present here an unusual type of cyclopropyl enyne cycloisomerization that couples the process of a cycloisomerization with the activation of a C-C bond in cyclopropanes. A set of substituted non-canonical tricyclic cyclobutanes were synthesized under mild conditions using [(Ph3 P)2 Fe(CO)(NO)]BF4 as catalyst in good to excellent yields with high levels of stereocontrol.
Collapse
Affiliation(s)
- Frederik Kramm
- Institut für Organische ChemieUniversität StuttgartPfaffenwaldring 5570569StuttgartGermany
| | - Franziska Ullwer
- Institut für Organische ChemieUniversität StuttgartPfaffenwaldring 5570569StuttgartGermany
| | - Benedict Klinnert
- Lehrstuhl für Organische Chemie IFakultät Chemie und LebensmittelchemieTU DresdenBergstraße 6601069DresdenGermany
| | - Min Zheng
- Institut für Organische ChemieUniversität StuttgartPfaffenwaldring 5570569StuttgartGermany
- Lehrstuhl für Organische Chemie IFakultät Chemie und LebensmittelchemieTU DresdenBergstraße 6601069DresdenGermany
| | - Bernd Plietker
- Institut für Organische ChemieUniversität StuttgartPfaffenwaldring 5570569StuttgartGermany
- Lehrstuhl für Organische Chemie IFakultät Chemie und LebensmittelchemieTU DresdenBergstraße 6601069DresdenGermany
| |
Collapse
|
2
|
Kramm F, Ullwer F, Zheng M, Plietker B, Klinnert B. Iron‐Catalyzed Cycloisomerization and C‐C Bond Activation to Access Non‐canonical Tricyclic Cyclobutanes. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202205169] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Frederik Kramm
- Universität Stuttgart Fakultät 3 Chemie: Universitat Stuttgart Fakultat 3 Chemie Institut für Organische Chemie GERMANY
| | - Franziska Ullwer
- Universität Stuttgart Fakultät 3 Chemie: Universitat Stuttgart Fakultat 3 Chemie Institut für Organische Chemie GERMANY
| | - Min Zheng
- Technische Universität Dresden: Technische Universitat Dresden Fakultät Chemie und Lebensmittelchemie GERMANY
| | - Bernd Plietker
- Dresden University of Technology: Technische Universitat Dresden Organische Chemie I Fakultät für Chemie und Lebensmittelchemie 01062 Dresden GERMANY
| | - Benedict Klinnert
- Technische Universität Dresden: Technische Universitat Dresden Fakultät Chemie und Lebensmittelchemie GERMANY
| |
Collapse
|
3
|
Harry NA, Ujwaldev SM. Recent advances in [5+2] cycloadditions. CURR ORG CHEM 2022. [DOI: 10.2174/1385272826666220510152025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Abstract:
The existence of a seven-membered cyclic core in several natural products and biomolecules vitalized the research on its synthesis. [5+2] cycloaddition has become a promising strategy for the construction of seven-membered ring systems by the formation of carbon-carbon bonds in a single step, with strong regioselectivity and stereoselectivity. This review mainly focuses on recent developments in the area of [5+2] cycloaddition since 2019. Total synthesis of natural products involving [5+2] cycloaddition as key step leading to heptacyclic core is also discussed. Synthesis of fused and bridged ring systems via the reactions involving inter and intramolecular [5+2] cycloadditions like oxidopyrylium-mediated [5+2] cycloadditions, [5+2] cycloadditions of vinyl cyclopropanes (VCPs), vinyl phenols, etc is explained in the review with the latest examples. This review provides a useful guide for researchers exploring this powerful strategy to create more elegant heptacycles in their future research.
Collapse
|
4
|
Scuiller A, Karnat A, Casaretto N, Archambeau A. Vinylcyclopropanes as All-Carbon 1,5-Dipoles: A Reactivity Switch for Palladium-Catalyzed (5 + 4) Cycloadditions. Org Lett 2021; 23:2332-2336. [PMID: 33660513 DOI: 10.1021/acs.orglett.1c00477] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Azonanes were prepared by a palladium-catalyzed (5 + 4) cycloaddition between activated vinylcyclopropanes and 1-azadienes. During this process, the vinylcyclopropane partner displayed an unusual reactivity and behaved as an all-carbon 1,5-dipole. A N,N-bidentate ligand was required to inhibit the formation of thermodynamic (3 + 2) cycloadducts.
Collapse
Affiliation(s)
- Anaïs Scuiller
- Laboratoire de Synthèse Organique, UMR 7652, Ecole Polytechnique, ENSTA ParisTech, CNRS, Palaiseau 91128 Cedex, France
| | - Alexandre Karnat
- Laboratoire de Synthèse Organique, UMR 7652, Ecole Polytechnique, ENSTA ParisTech, CNRS, Palaiseau 91128 Cedex, France
| | - Nicolas Casaretto
- Laboratoire de Chimie Moléculaire, UMR 9168, Ecole Polytechnique, CNRS, 91128 Palaiseau Cedex France
| | - Alexis Archambeau
- Laboratoire de Synthèse Organique, UMR 7652, Ecole Polytechnique, ENSTA ParisTech, CNRS, Palaiseau 91128 Cedex, France
| |
Collapse
|
5
|
Wang J, Blaszczyk SA, Li X, Tang W. Transition Metal-Catalyzed Selective Carbon-Carbon Bond Cleavage of Vinylcyclopropanes in Cycloaddition Reactions. Chem Rev 2021; 121:110-139. [PMID: 32786421 PMCID: PMC9576321 DOI: 10.1021/acs.chemrev.0c00160] [Citation(s) in RCA: 141] [Impact Index Per Article: 47.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
In this review, transition metal-catalyzed methodologies and applications that exploit C-C bond cleavage of vinylcyclopropanes (VCPs) are summarized with a focus on cycloaddition and related addition reactions. Transition metals, including palladium, nickel, iron, ruthenium, rhodium, cobalt, and iridium, can catalyze the cleavage of C-C bonds in activated or nonactivated VCPs. Additionally, these bond-breaking reactions can occur as intra- or intermolecular processes. The properties of activated and nonactivated VCPs are discussed in the Introduction. Various transition metal-catalyzed cycloaddition and addition reactions involving the cleavage of C-C bonds in activated VCPs are then discussed in the next chapter. The transition metal-catalyzed cycloadditions involving the cleavage of C-C in nonactivated VCPs are summarized in the following chapter. Finally, challenges and potential opportunities are outlined in the last chapter.
Collapse
Affiliation(s)
- Jianhua Wang
- Department of Medicinal Chemistry, Key Laboratory of Chemical Biology (Ministry of Education), School of Pharmaceutical Sciences, Shandong University, 44 West Culture Road, 250012 Ji’nan, Shandong, P. R. China
| | - Stephanie A. Blaszczyk
- School of Pharmacy, University of Wisconsin-Madison, Madison, WI 53705, USA
- Department of Chemistry, University of Wisconsin-Madison, Madison, WI 53706, USA
| | - Xiaoxun Li
- Department of Medicinal Chemistry, Key Laboratory of Chemical Biology (Ministry of Education), School of Pharmaceutical Sciences, Shandong University, 44 West Culture Road, 250012 Ji’nan, Shandong, P. R. China
| | - Weiping Tang
- School of Pharmacy, University of Wisconsin-Madison, Madison, WI 53705, USA
- Department of Chemistry, University of Wisconsin-Madison, Madison, WI 53706, USA
| |
Collapse
|
6
|
Caillé J, Robiette R. Cycloaddition of cyclopropanes for the elaboration of medium-sized carbocycles. Org Biomol Chem 2021; 19:5702-5724. [PMID: 34114583 DOI: 10.1039/d1ob00838b] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
The stereocontrolled formation of medium-sized carbocycles is a major goal in modern organic chemistry due to their widespread occurrence in natural products and pharmaceutically active ingredients. One approach consists in the use of cycloaddition reactions which notably results in high selectivities and atom-economy. To this end, cyclopropanes are ideal substrates since they can provide readily functionalized three- or five-carbon synthons. Herein we report advances made in cycloaddition reactions of cyclopropanes towards the synthesis of medium-sized carbocycles via transition metal catalysis or Lewis acid catalysis.
Collapse
Affiliation(s)
- Julien Caillé
- Institute of Condensed Matter and Nanosciences, Université catholique de Louvain, Place Louis Pasteur 1 box L4.01.02, 1348 Louvain-la-Neuve, Belgium. and Institut de Chimie et des Matériaux Paris Est (ICMPE), UMR-CNRS 7182, Université Paris Est Créteil (UPEC), 2 Rue Henri Dunant, 94320 Thiais, France.
| | - Raphaël Robiette
- Institute of Condensed Matter and Nanosciences, Université catholique de Louvain, Place Louis Pasteur 1 box L4.01.02, 1348 Louvain-la-Neuve, Belgium.
| |
Collapse
|
7
|
Wan X, Sun M, Wang JY, Yu L, Wu Q, Zhang YC, Shi F. Regio- and enantioselective ring-opening reaction of vinylcyclopropanes with indoles under cooperative catalysis. Org Chem Front 2021. [DOI: 10.1039/d0qo00699h] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
The title reaction has been established under the cooperative bimetallic catalysis of iridium and copper catalysts, which afforded indole C3-allylation products with branched selectivity in moderate yields and good enantioselectivities.
Collapse
Affiliation(s)
- Xiao Wan
- School of Chemistry and Materials Science
- Jiangsu Normal University
- Xuzhou
- 221116
- China
| | - Meng Sun
- School of Chemistry and Materials Science
- Jiangsu Normal University
- Xuzhou
- 221116
- China
| | - Jing-Yi Wang
- School of Chemistry and Materials Science
- Jiangsu Normal University
- Xuzhou
- 221116
- China
| | - Lei Yu
- School of Chemistry and Materials Science
- Jiangsu Normal University
- Xuzhou
- 221116
- China
| | - Qiong Wu
- School of Materials and Chemical Engineering
- Xuzhou University of Technology
- Xuzhou 221018
- China
| | - Yu-Chen Zhang
- School of Chemistry and Materials Science
- Jiangsu Normal University
- Xuzhou
- 221116
- China
| | - Feng Shi
- School of Chemistry and Materials Science
- Jiangsu Normal University
- Xuzhou
- 221116
- China
| |
Collapse
|
8
|
Trost BM, Zuo Z, Schultz JE. Transition-Metal-Catalyzed Cycloaddition Reactions to Access Seven-Membered Rings. Chemistry 2020; 26:15354-15377. [PMID: 32705722 DOI: 10.1002/chem.202002713] [Citation(s) in RCA: 46] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2020] [Revised: 07/12/2020] [Indexed: 02/06/2023]
Abstract
The efficient and selective synthesis of functionalized seven-membered rings remains an important pursuit within synthetic organic chemistry, as this motif appears in numerous drug-like molecules and natural products. Use of cycloaddition reactions remains an attractive approach for their construction within the perspective of atom and step economy. Additionally, the ability to combine multiple components in a single reaction has the potential to allow for efficient combinatorial strategies of diversity-oriented synthesis. The inherent entropic penalty associated with achieving these transformations has impressively been overcome with development of catalysis, whereby the reaction components can be pre-organized through activation by transition-metal-catalysis. The fine-tuning of metal/ligand combinations as well as reaction conditions allows for achieving chemo-, regio-, diastereo- and enantioselectivity in these transformations. Herein, we discuss recent advances in transition-metal-catalyzed construction of seven-membered rings via combination of 2-4 components mediated by a variety of metals. An emphasis is placed on the mechanistic aspects of these transformations to both illustrate the state of the science and to highlight the unique application of novel processes of transition-metals in these transformations.
Collapse
Affiliation(s)
- Barry M Trost
- Department of Chemistry, Stanford University, Stanford, California, 94305-5080, USA
| | - Zhijun Zuo
- Department of Chemistry, Stanford University, Stanford, California, 94305-5080, USA
| | - Johnathan E Schultz
- Chemical Process Development, Bristol Myers Squibb, New Brunswick, NJ, 08901, USA
| |
Collapse
|
9
|
Li M, Xiong Q, Qu B, Xiao Y, Lan Y, Lu L, Xiao W. Utilizing Vinylcyclopropane Reactivity: Palladium‐Catalyzed Asymmetric [5+2] Dipolar Cycloadditions. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202006366] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Miao‐Miao Li
- CCNU-uOttawa Joint Research Centre Key Laboratory of Pesticide & Chemical Biology Ministry of Education College of Chemistry Central China Normal University 152 Luoyu Road Wuhan Hubei 430079 China
| | - Qin Xiong
- School of Chemistry and Chemical Engineering Chongqing University Chongqing 400030 China
| | - Bao‐Le Qu
- CCNU-uOttawa Joint Research Centre Key Laboratory of Pesticide & Chemical Biology Ministry of Education College of Chemistry Central China Normal University 152 Luoyu Road Wuhan Hubei 430079 China
| | - Yu‐Qing Xiao
- CCNU-uOttawa Joint Research Centre Key Laboratory of Pesticide & Chemical Biology Ministry of Education College of Chemistry Central China Normal University 152 Luoyu Road Wuhan Hubei 430079 China
| | - Yu Lan
- School of Chemistry and Chemical Engineering Chongqing University Chongqing 400030 China
- College of Chemistry, and Institute of Green Catalysis Zhengzhou University Zhengzhou Henan 450001 China
| | - Liang‐Qiu Lu
- CCNU-uOttawa Joint Research Centre Key Laboratory of Pesticide & Chemical Biology Ministry of Education College of Chemistry Central China Normal University 152 Luoyu Road Wuhan Hubei 430079 China
- State Key Laboratory for Oxo Synthesis and Selective Oxidation Lanzhou Institute of Chemical Physics (LICP) Chinese Academy of Sciences Lanzhou 730000 P. R. China
| | - Wen‐Jing Xiao
- CCNU-uOttawa Joint Research Centre Key Laboratory of Pesticide & Chemical Biology Ministry of Education College of Chemistry Central China Normal University 152 Luoyu Road Wuhan Hubei 430079 China
| |
Collapse
|
10
|
Li M, Xiong Q, Qu B, Xiao Y, Lan Y, Lu L, Xiao W. Utilizing Vinylcyclopropane Reactivity: Palladium‐Catalyzed Asymmetric [5+2] Dipolar Cycloadditions. Angew Chem Int Ed Engl 2020; 59:17429-17434. [DOI: 10.1002/anie.202006366] [Citation(s) in RCA: 40] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2020] [Revised: 06/15/2020] [Indexed: 12/22/2022]
Affiliation(s)
- Miao‐Miao Li
- CCNU-uOttawa Joint Research Centre Key Laboratory of Pesticide & Chemical Biology Ministry of Education College of Chemistry Central China Normal University 152 Luoyu Road Wuhan Hubei 430079 China
| | - Qin Xiong
- School of Chemistry and Chemical Engineering Chongqing University Chongqing 400030 China
| | - Bao‐Le Qu
- CCNU-uOttawa Joint Research Centre Key Laboratory of Pesticide & Chemical Biology Ministry of Education College of Chemistry Central China Normal University 152 Luoyu Road Wuhan Hubei 430079 China
| | - Yu‐Qing Xiao
- CCNU-uOttawa Joint Research Centre Key Laboratory of Pesticide & Chemical Biology Ministry of Education College of Chemistry Central China Normal University 152 Luoyu Road Wuhan Hubei 430079 China
| | - Yu Lan
- School of Chemistry and Chemical Engineering Chongqing University Chongqing 400030 China
- College of Chemistry, and Institute of Green Catalysis Zhengzhou University Zhengzhou Henan 450001 China
| | - Liang‐Qiu Lu
- CCNU-uOttawa Joint Research Centre Key Laboratory of Pesticide & Chemical Biology Ministry of Education College of Chemistry Central China Normal University 152 Luoyu Road Wuhan Hubei 430079 China
- State Key Laboratory for Oxo Synthesis and Selective Oxidation Lanzhou Institute of Chemical Physics (LICP) Chinese Academy of Sciences Lanzhou 730000 P. R. China
| | - Wen‐Jing Xiao
- CCNU-uOttawa Joint Research Centre Key Laboratory of Pesticide & Chemical Biology Ministry of Education College of Chemistry Central China Normal University 152 Luoyu Road Wuhan Hubei 430079 China
| |
Collapse
|
11
|
Takano H, Okazaki S, Nishibe S, Ito T, Shiozawa N, Sugimura N, Kanyiva KS, Shibata T. Gold-catalyzed dual C-C bond cleavage of biphenylenes bearing a pendant alkyne at ambient temperature. Org Biomol Chem 2020; 18:5826-5831. [PMID: 32692790 DOI: 10.1039/d0ob01211d] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
We report a catalytic skeletal rearrangement of biphenylenes with a pendant alkyne moiety at room temperature by a cationic gold catalyst, which involves the cleavage of two bonds: the C-C bond of biphenylene and the C(sp)-C(sp2 or sp3) bond. Experimental and theoretical studies revealed that the reaction mechanism included π-activation of the alkyne, ring expansion and 1,2-carbon shift.
Collapse
Affiliation(s)
- Hideaki Takano
- Department of Chemistry and Biochemistry, School of Advanced Science and Engineering, Waseda University, Shinjuku, Tokyo 169-8555, Japan.
| | - Sari Okazaki
- Department of Chemistry and Biochemistry, School of Advanced Science and Engineering, Waseda University, Shinjuku, Tokyo 169-8555, Japan.
| | - Shun Nishibe
- Department of Chemistry and Biochemistry, School of Advanced Science and Engineering, Waseda University, Shinjuku, Tokyo 169-8555, Japan.
| | - Takeharu Ito
- Department of Chemistry and Biochemistry, School of Advanced Science and Engineering, Waseda University, Shinjuku, Tokyo 169-8555, Japan.
| | - Natsumi Shiozawa
- Department of Chemistry and Biochemistry, School of Advanced Science and Engineering, Waseda University, Shinjuku, Tokyo 169-8555, Japan.
| | - Natsuhiko Sugimura
- Materials Characterization Central Laboratory, Waseda University, Tokyo 169-8555, Japan
| | - Kyalo Stephen Kanyiva
- Global Center for Science and Engineering, School of Advanced Science and Engineering, Waseda University, Shinjuku, Tokyo 169-8555, Japan
| | - Takanori Shibata
- Department of Chemistry and Biochemistry, School of Advanced Science and Engineering, Waseda University, Shinjuku, Tokyo 169-8555, Japan.
| |
Collapse
|
12
|
Watanabe K, Kawashima Y, Mukai C, Takagi T, Suwa Y, Tian YS, Kawashita N. A Comparison between the Cycloadditions of Allenyl- and Vinyl-Cyclopentanes Using Density Functional Theory and GRRM Program. Chem Pharm Bull (Tokyo) 2020; 68:737-741. [DOI: 10.1248/cpb.c20-00144] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Kazuki Watanabe
- Graduate School of Pharmaceutical Sciences, Osaka University
| | | | - Chisato Mukai
- Organization of Frontier Science and Innovation, Kanazawa University
| | - Tatsuya Takagi
- Graduate School of Pharmaceutical Sciences, Osaka University
| | - Yukinori Suwa
- Graduate School of Pharmaceutical Sciences, Osaka University
| | - Yu-Shi Tian
- Graduate School of Pharmaceutical Sciences, Osaka University
| | | |
Collapse
|
13
|
Garbo M, Besnard C, Guénée L, Mazet C. Access to Optically Active 7-Membered Rings by a 2-Step Synthetic Sequence: Cu-Catalyzed Stereoselective Cyclopropanation of Branched 1,3-Dienes/Rh-Catalyzed Stereoconvergent [5 + 2] Cycloaddition. ACS Catal 2020. [DOI: 10.1021/acscatal.0c02956] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Michele Garbo
- Department of Organic Chemistry, University of Geneva, 30 Quai Ernest Ansermet, 1211 Geneva, Switzerland
| | - Céline Besnard
- Laboratory of Crystallography, University of Geneva, 24 Quai Ernest Ansermet, 1211 Geneva, Switzerland
| | - Laure Guénée
- Laboratory of Crystallography, University of Geneva, 24 Quai Ernest Ansermet, 1211 Geneva, Switzerland
| | - Clément Mazet
- Department of Organic Chemistry, University of Geneva, 30 Quai Ernest Ansermet, 1211 Geneva, Switzerland
| |
Collapse
|
14
|
Pirenne V, Muriel B, Waser J. Catalytic Enantioselective Ring-Opening Reactions of Cyclopropanes. Chem Rev 2020; 121:227-263. [DOI: 10.1021/acs.chemrev.0c00109] [Citation(s) in RCA: 137] [Impact Index Per Article: 34.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Vincent Pirenne
- Laboratory of Catalysis and Organic Synthesis, Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne, EPFL SB ISIC LCSO, BCH 4306, 1015 Lausanne, Switzerland
| | - Bastian Muriel
- Laboratory of Catalysis and Organic Synthesis, Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne, EPFL SB ISIC LCSO, BCH 4306, 1015 Lausanne, Switzerland
| | - Jerome Waser
- Laboratory of Catalysis and Organic Synthesis, Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne, EPFL SB ISIC LCSO, BCH 4306, 1015 Lausanne, Switzerland
| |
Collapse
|
15
|
Blaszczyk SA, Glazier DA, Tang W. Rhodium-Catalyzed (5 + 2) and (5 + 1) Cycloadditions Using 1,4-Enynes as Five-Carbon Building Blocks. Acc Chem Res 2020; 53:231-243. [PMID: 31820914 PMCID: PMC7261388 DOI: 10.1021/acs.accounts.9b00477] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Cycloaddition reactions are a hallmark in organic synthesis because they provide an efficient way to construct highly substituted carbo- and heterocycles found in natural products and pharmaceutical agents. Most cycloadditions occur under thermal or photochemical conditions, but transition-metal complexes can promote reactions that occur beyond these circumstances. Transition-metal complexation with alkynes, alkenes, allenes, or dienes often alters the reactivity of those π-systems and facilitates access to diverse cycloaddition products. This Account describes our efforts toward the design of novel five-carbon synthons for use in rhodium-catalyzed (5 + n) cycloadditions, which include 3-acyloxy-1,4-enynes (ACEs) for (5 + 1) and (5 + 2) cycloadditions and 3-hydroxy-1,4-enynes (HYEs) for (5 + 1) cycloadditions. Furthermore, this Account includes relevant computational information, mechanistic insights, and applications of these cycloadditions in the synthesis of various highly substituted carbo- and heterocycles. The (5 + n) cycloaddition reactions presented herein share the following common mechanistic features: the 1,2-migration of an acyloxy group in propargyl esters or the ionization of a hydroxyl group in propargylic alcohols, oxidative cyclization to form a metallacycle, insertion of the one- or two-carbon component, and reductive elimination to yield the final product. In conjunction with a cationic rhodium catalyst, we used ACEs for the intramolecular (5 + 2) cycloaddition with tethered alkynes, alkenes, and allenes. In some cases, an electron-deficient phosphine ligand improved the reaction yields, especially when the ACE featured an internal alkyne. We also demonstrated that chirality could be efficiently transferred from a relatively simple starting material to a more complex bicyclic product. Products derived from ACEs with tethered alkenes and allenes contained one or more stereocenters, and high diastereoselectivity was achieved in most of these cases. For ACEs tethered to an allene, the reaction preferentially occurred at the internal alkene. We also switched the positions of the alkene and the alkyne in the 1,4-enyne of our original ACE to provide an inverted ACE variant, which produced products with complementary functionalities. After we successfully developed the Rh-catalyzed intramolecular (5 + 2) cycloaddition, we optimized conditions for the intermolecular version, which required a neutral rhodium catalyst and phosphine ligand. When a terminal alkyne was used as the two-carbon component, high regioselectivity was observed. While investigating the effect of esters on the rate of the intermolecular (5 + 2) cycloadditions, we determined that an electron-rich ester significantly accelerated the reaction. Subsequently, we demonstrated that (5 + 1) cycloadditions undergo this rate enhancement as well in the presence of an ester. Aside from ACEs, we synthesized HYEs in four steps from commercially available 2-aminobenzoic acid for use in the (5 + 1) cycloaddition. Mechanistically, HYEs were designed so that the aniline nitrogen could serve as the nucleophile and the -OH could serve as the leaving group. Using HYEs, we developed a novel method to make substituted carbazoles, dibenzofurans, and tricyclic compounds with a cyclohexadienone moiety. Although the occurrence of transition-metal-catalyzed acyloxy migrations has been known for decades, only recently has their synthetic value been realized. We hope our studies that employ readily available 1,4-enynes as the five-carbon components in (5 + n) cycloadditions can inspire the design of new two-component and multicomponent cycloadditions.
Collapse
Affiliation(s)
- Stephanie A. Blaszczyk
- School of Pharmacy, University of Wisconsin-Madison, Madison, WI, 53705, USA
- Department of Chemistry, University of Wisconsin-Madison, Madison, WI, 53706, USA
| | - Daniel A. Glazier
- School of Pharmacy, University of Wisconsin-Madison, Madison, WI, 53705, USA
- Department of Chemistry, University of Wisconsin-Madison, Madison, WI, 53706, USA
| | - Weiping Tang
- School of Pharmacy, University of Wisconsin-Madison, Madison, WI, 53705, USA
- Department of Chemistry, University of Wisconsin-Madison, Madison, WI, 53706, USA
| |
Collapse
|
16
|
Rui KH, Yang S, Wei Y, Shi M. Rh(i)-Catalyzed stereoselective intramolecular cycloaddition reactions of ene-vinylidenecyclopropanes for the construction of fused 6,5-bicyclic skeletons with a quaternary all-carbon stereocenter. Org Chem Front 2019. [DOI: 10.1039/c9qo00611g] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Rh(i)-catalyzed asymmetric [3 + 2] cycloadditions of ene-VDCPs are demonstrated, producing cyclic ring structures with an all-carbon quaternary stereocenter in good yields with excellent enantioselectivities.
Collapse
Affiliation(s)
- Kang-Hua Rui
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals
- School of Chemistry & Molecular Engineering
- East China University of Science and Technology
- Shanghai
- China
| | - Song Yang
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals
- School of Chemistry & Molecular Engineering
- East China University of Science and Technology
- Shanghai
- China
| | - Yin Wei
- State Key Laboratory of Organometallic Chemistry
- Center for Excellence in Molecular Synthesis
- University of Chinese Academy of Science
- Shanghai Institute of Organic Chemistry
- Chinese Academy of Sciences
| | - Min Shi
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals
- School of Chemistry & Molecular Engineering
- East China University of Science and Technology
- Shanghai
- China
| |
Collapse
|
17
|
Gao K, Zhang YG, Wang Z, Ding H. Recent development on the [5+2] cycloadditions and their application in natural product synthesis. Chem Commun (Camb) 2019; 55:1859-1878. [DOI: 10.1039/c8cc09077g] [Citation(s) in RCA: 48] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
The recent developments on the [5+2] cycloadditions and their application in the synthesis of complex natural products are discussed.
Collapse
Affiliation(s)
- Kai Gao
- Institute of Medicinal Natural Products
- School of Advanced Study
- Taizhou University
- Taizhou 318000
- P. R. China
| | - Yong-Gang Zhang
- Institute of Medicinal Natural Products
- School of Advanced Study
- Taizhou University
- Taizhou 318000
- P. R. China
| | - Zhiming Wang
- Institute of Medicinal Natural Products
- School of Advanced Study
- Taizhou University
- Taizhou 318000
- P. R. China
| | - Hanfeng Ding
- Institute of Medicinal Natural Products
- School of Advanced Study
- Taizhou University
- Taizhou 318000
- P. R. China
| |
Collapse
|
18
|
Rui KH, Shi M. Rh(i)-Catalyzed intramolecular [3 + 2] cycloaddition reactions of yne-vinylidenecyclopropanes. Org Chem Front 2019. [DOI: 10.1039/c9qo00343f] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
A Rh(i)-catalyzed intramolecular [3 + 2] cycloaddition reaction of yne-vinylidenecyclopropanes has been developed, providing fused [6.5]-bicyclic products in moderate to good yields.
Collapse
Affiliation(s)
- Kang-Hua Rui
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals
- School of Chemistry & Molecular Engineering
- East China University of Science and Technology
- Shanghai
- China
| | - Min Shi
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals
- School of Chemistry & Molecular Engineering
- East China University of Science and Technology
- Shanghai
- China
| |
Collapse
|
19
|
Wei Y, Liu S, Li MM, Li Y, Lan Y, Lu LQ, Xiao WJ. Enantioselective Trapping of Pd-Containing 1,5-Dipoles by Photogenerated Ketenes: Access to 7-Membered Lactones Bearing Chiral Quaternary Stereocenters. J Am Chem Soc 2018; 141:133-137. [DOI: 10.1021/jacs.8b12095] [Citation(s) in RCA: 141] [Impact Index Per Article: 23.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Yi Wei
- CCNU-uOttawa Joint
Research Centre, Key Laboratory of Pesticide and Chemical Biology,
Ministry of Education, College of Chemistry, Central China Normal University, 152 Luoyu Road, Wuhan 430079, China
| | - Song Liu
- School of Chemistry and Chemical Engineering, Chongqing University, Chongqing 400030, China
| | - Miao-Miao Li
- CCNU-uOttawa Joint
Research Centre, Key Laboratory of Pesticide and Chemical Biology,
Ministry of Education, College of Chemistry, Central China Normal University, 152 Luoyu Road, Wuhan 430079, China
| | - Yi Li
- CCNU-uOttawa Joint
Research Centre, Key Laboratory of Pesticide and Chemical Biology,
Ministry of Education, College of Chemistry, Central China Normal University, 152 Luoyu Road, Wuhan 430079, China
| | - Yu Lan
- School of Chemistry and Chemical Engineering, Chongqing University, Chongqing 400030, China
| | - Liang-Qiu Lu
- CCNU-uOttawa Joint
Research Centre, Key Laboratory of Pesticide and Chemical Biology,
Ministry of Education, College of Chemistry, Central China Normal University, 152 Luoyu Road, Wuhan 430079, China
| | - Wen-Jing Xiao
- CCNU-uOttawa Joint
Research Centre, Key Laboratory of Pesticide and Chemical Biology,
Ministry of Education, College of Chemistry, Central China Normal University, 152 Luoyu Road, Wuhan 430079, China
- State Key Laboratory
of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, China
| |
Collapse
|
20
|
Verdugo F, Villarino L, Durán J, Gulías M, Mascareñas JL, López F. Enantioselective Palladium-Catalyzed [3C + 2C] and [4C + 3C] Intramolecular Cycloadditions of Alkylidenecyclopropanes. ACS Catal 2018. [DOI: 10.1021/acscatal.8b01296] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Felipe Verdugo
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CiQUS) and Departamento de Química Orgánica, Universidad de Santiago de Compostela, 15782, Santiago de Compostela, Spain
| | - Lara Villarino
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CiQUS) and Departamento de Química Orgánica, Universidad de Santiago de Compostela, 15782, Santiago de Compostela, Spain
| | - Juan Durán
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CiQUS) and Departamento de Química Orgánica, Universidad de Santiago de Compostela, 15782, Santiago de Compostela, Spain
| | - Moisés Gulías
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CiQUS) and Departamento de Química Orgánica, Universidad de Santiago de Compostela, 15782, Santiago de Compostela, Spain
| | - José L. Mascareñas
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CiQUS) and Departamento de Química Orgánica, Universidad de Santiago de Compostela, 15782, Santiago de Compostela, Spain
| | - Fernando López
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CiQUS) and Departamento de Química Orgánica, Universidad de Santiago de Compostela, 15782, Santiago de Compostela, Spain
- Instituto de Química Orgánica General CSIC, Juan de la Cierva 3, 28006, Madrid, Spain
| |
Collapse
|
21
|
Wu C, Yoshikai N. Cobalt‐Catalyzed Intramolecular Reactions between a Vinylcyclopropane and an Alkyne: Switchable [5+2] Cycloaddition and Homo‐Ene Pathways. Angew Chem Int Ed Engl 2018; 57:6558-6562. [DOI: 10.1002/anie.201803162] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2018] [Indexed: 02/03/2023]
Affiliation(s)
- Chunlin Wu
- Division of Chemistry and Biological ChemistrySchool of Physical and Mathematical SciencesNanyang Technological University Singapore 637371 Singapore
| | - Naohiko Yoshikai
- Division of Chemistry and Biological ChemistrySchool of Physical and Mathematical SciencesNanyang Technological University Singapore 637371 Singapore
| |
Collapse
|
22
|
Wu C, Yoshikai N. Cobalt‐Catalyzed Intramolecular Reactions between a Vinylcyclopropane and an Alkyne: Switchable [5+2] Cycloaddition and Homo‐Ene Pathways. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201803162] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Chunlin Wu
- Division of Chemistry and Biological ChemistrySchool of Physical and Mathematical SciencesNanyang Technological University Singapore 637371 Singapore
| | - Naohiko Yoshikai
- Division of Chemistry and Biological ChemistrySchool of Physical and Mathematical SciencesNanyang Technological University Singapore 637371 Singapore
| |
Collapse
|
23
|
Meazza M, Guo H, Rios R. Synthetic applications of vinyl cyclopropane opening. Org Biomol Chem 2018; 15:2479-2490. [PMID: 28233002 DOI: 10.1039/c6ob02647h] [Citation(s) in RCA: 107] [Impact Index Per Article: 17.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Vinyl cyclopropanes are amongst the most useful building blocks in organic synthesis. Their easy opening and capacity to generate dipoles have been exploited for the synthesis of cyclopentanes with good yields and sometimes excellent stereoselectivities. In this review we give an overview of their applications, focusing on the present century.
Collapse
Affiliation(s)
- Marta Meazza
- School of Chemistry. University of Southampton. Highfield Campus, SO17 1BJ Southampton, UK.
| | - Hao Guo
- Department of Chemistry, Fudan University, 220 Handan Road, Shanghai, 200433 Fudan, People's Republic of China.
| | - Ramon Rios
- School of Chemistry. University of Southampton. Highfield Campus, SO17 1BJ Southampton, UK.
| |
Collapse
|
24
|
Brownsey DK, Gorobets E, Derksen DJ. Beyond geminal diesters: increasing the scope of metal-mediated vinylcyclopropane annulations while decreasing pre-activation. Org Biomol Chem 2018; 16:3506-3523. [DOI: 10.1039/c8ob00593a] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This review covers the transition metal mediated annulation chemistry of vinylcyclopropanes with an emphasis on non-donor–acceptor examples, and where pertinent, examples of natural product syntheses are shown.
Collapse
|
25
|
Zhou H, Wu B, Ma JA, Dang Y. Mechanistic understanding of [Rh(NHC)]-catalyzed intramolecular [5 + 2] cycloadditions of vinyloxiranes and vinylcyclopropanes with alkynes. Org Biomol Chem 2018; 16:4295-4303. [DOI: 10.1039/c8ob01117f] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Rh-catalyzed hetero-[5 + 2] cycloaddition of vinyloxirane with alkyne occurs via oxidative alkyne–alkene cyclization, oxirane cleavage and reductive elimination, the first example where oxidative alkyne–alkene cyclization mechanism is preferred within Rh-catalyzed [5 + 2] cycloadditions.
Collapse
Affiliation(s)
- Huan Zhou
- Department of Chemistry
- Tianjin Key Laboratory of Molecular Optoelectronic Sciences
- Tianjin University
- and Collaborative Innovation Center of Chemical Science and Engineering
- Tianjin 300072
| | - Botao Wu
- Department of Chemistry
- Tianjin Key Laboratory of Molecular Optoelectronic Sciences
- Tianjin University
- and Collaborative Innovation Center of Chemical Science and Engineering
- Tianjin 300072
| | - Jun-An Ma
- Department of Chemistry
- Tianjin Key Laboratory of Molecular Optoelectronic Sciences
- Tianjin University
- and Collaborative Innovation Center of Chemical Science and Engineering
- Tianjin 300072
| | - Yanfeng Dang
- Department of Chemistry
- Tianjin Key Laboratory of Molecular Optoelectronic Sciences
- Tianjin University
- and Collaborative Innovation Center of Chemical Science and Engineering
- Tianjin 300072
| |
Collapse
|
26
|
Ardkhean R, Roth PMC, Maksymowicz RM, Curran A, Peng Q, Paton RS, Fletcher SP. Enantioselective Conjugate Addition Catalyzed by a Copper Phosphoramidite Complex: Computational and Experimental Exploration of Asymmetric Induction. ACS Catal 2017. [DOI: 10.1021/acscatal.7b01453] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Ruchuta Ardkhean
- Chemistry
Research Laboratory, University of Oxford, 12 Mansfield Road, Oxford OX1 3TA, U.K
| | - Philippe M. C. Roth
- Chemistry
Research Laboratory, University of Oxford, 12 Mansfield Road, Oxford OX1 3TA, U.K
| | - Rebecca M. Maksymowicz
- Chemistry
Research Laboratory, University of Oxford, 12 Mansfield Road, Oxford OX1 3TA, U.K
| | - Alex Curran
- Chemistry
Research Laboratory, University of Oxford, 12 Mansfield Road, Oxford OX1 3TA, U.K
| | - Qian Peng
- State
Key Laboratory of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, People’s Republic of China
| | - Robert S. Paton
- Chemistry
Research Laboratory, University of Oxford, 12 Mansfield Road, Oxford OX1 3TA, U.K
| | - Stephen P. Fletcher
- Chemistry
Research Laboratory, University of Oxford, 12 Mansfield Road, Oxford OX1 3TA, U.K
| |
Collapse
|
27
|
Liu CH, Yu ZX. Rhodium(I)-Catalyzed Bridged [5+2] Cycloaddition of cis
-Allene-vinylcyclopropanes to Synthesize the Bicyclo[4.3.1]decane Skeleton. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/anie.201702288] [Citation(s) in RCA: 53] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Cheng-Hang Liu
- Beijing National Laboratory for Molecular Sciences (BNLMS); Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry; Peking University; Beijing 100871 China
| | - Zhi-Xiang Yu
- Beijing National Laboratory for Molecular Sciences (BNLMS); Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry; Peking University; Beijing 100871 China
| |
Collapse
|
28
|
Liu CH, Yu ZX. Rhodium(I)-Catalyzed Bridged [5+2] Cycloaddition of cis
-Allene-vinylcyclopropanes to Synthesize the Bicyclo[4.3.1]decane Skeleton. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201702288] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Cheng-Hang Liu
- Beijing National Laboratory for Molecular Sciences (BNLMS); Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry; Peking University; Beijing 100871 China
| | - Zhi-Xiang Yu
- Beijing National Laboratory for Molecular Sciences (BNLMS); Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry; Peking University; Beijing 100871 China
| |
Collapse
|
29
|
Trost BM, Ryan MC, Rao M. Chiral cyclopentadienylruthenium sulfoxide catalysts for asymmetric redox bicycloisomerization. Beilstein J Org Chem 2016; 12:1136-52. [PMID: 27559366 PMCID: PMC4979649 DOI: 10.3762/bjoc.12.110] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2016] [Accepted: 05/03/2016] [Indexed: 01/19/2023] Open
Abstract
A full account of our efforts toward an asymmetric redox bicycloisomerization reaction is presented in this article. Cyclopentadienylruthenium (CpRu) complexes containing tethered chiral sulfoxides were synthesized via an oxidative [3 + 2] cycloaddition reaction between an alkyne and an allylruthenium complex. Sulfoxide complex 1 containing a p-anisole moiety on its sulfoxide proved to be the most efficient and selective catalyst for the asymmetric redox bicycloisomerization of 1,6- and 1,7-enynes. This complex was used to synthesize a broad array of [3.1.0] and [4.1.0] bicycles. Sulfonamide- and phosphoramidate-containing products could be deprotected under reducing conditions. Catalysis performed with enantiomerically enriched propargyl alcohols revealed a matched/mismatched effect that was strongly dependent on the nature of the solvent.
Collapse
Affiliation(s)
- Barry M Trost
- Department of Chemistry, Stanford University, Stanford, California 94305-5580, USA
| | - Michael C Ryan
- Department of Chemistry, Stanford University, Stanford, California 94305-5580, USA
| | - Meera Rao
- Department of Chemistry, Stanford University, Stanford, California 94305-5580, USA
| |
Collapse
|
30
|
Straker RN, Peng Q, Mekareeya A, Paton RS, Anderson EA. Computational ligand design in enantio- and diastereoselective ynamide [5+2] cycloisomerization. Nat Commun 2016; 7:10109. [PMID: 26728968 PMCID: PMC4728367 DOI: 10.1038/ncomms10109] [Citation(s) in RCA: 103] [Impact Index Per Article: 12.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2015] [Accepted: 11/03/2015] [Indexed: 12/21/2022] Open
Abstract
Transition metals can catalyse the stereoselective synthesis of cyclic organic molecules in a highly atom-efficient process called cycloisomerization. Many diastereoselective (substrate stereocontrol), and enantioselective (catalyst stereocontrol) cycloisomerizations have been developed. However, asymmetric cycloisomerizations where a chiral catalyst specifies the stereochemical outcome of the cyclization of a single enantiomer substrate--regardless of its inherent preference--are unknown. Here we show how a combined theoretical and experimental approach enables the design of a highly reactive rhodium catalyst for the stereoselective cycloisomerization of ynamide-vinylcyclopropanes to [5.3.0]-azabicycles. We first establish highly diastereoselective cycloisomerizations using an achiral catalyst, and then explore phosphoramidite-complexed rhodium catalysts in the enantioselective variant, where theoretical investigations uncover an unexpected reaction pathway in which the electronic structure of the phosphoramidite dramatically influences reaction rate and enantioselectivity. A marked enhancement of both is observed using the optimal theory-designed ligand, which enables double stereodifferentiating cycloisomerizations in both matched and mismatched catalyst-substrate settings.
Collapse
Affiliation(s)
- R. N. Straker
- Chemistry Research Laboratory, University of Oxford, 12 Mansfield Road, Oxford OX1 3TA, UK
| | - Q. Peng
- Chemistry Research Laboratory, University of Oxford, 12 Mansfield Road, Oxford OX1 3TA, UK
| | - A. Mekareeya
- Chemistry Research Laboratory, University of Oxford, 12 Mansfield Road, Oxford OX1 3TA, UK
| | - R. S. Paton
- Chemistry Research Laboratory, University of Oxford, 12 Mansfield Road, Oxford OX1 3TA, UK
| | - E. A. Anderson
- Chemistry Research Laboratory, University of Oxford, 12 Mansfield Road, Oxford OX1 3TA, UK
| |
Collapse
|
31
|
Mukai C, Yasuda S. Rh<sup>I</sup>-Catalyzed Cycloaddition between Allenyl π-Bonds and C-C Triple Bonds. J SYN ORG CHEM JPN 2016. [DOI: 10.5059/yukigoseikyokaishi.74.1108] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Chisato Mukai
- Division of Pharmaceutical Sciences, Graduate School of Medical Sciences, Kanazawa University
| | | |
Collapse
|
32
|
Shu XZ, Schienebeck CM, Li X, Zhou X, Song W, Chen L, Guzei IA, Tang W. Rhodium-Catalyzed Stereoselective Intramolecular [5 + 2] Cycloaddition of 3-Acyloxy 1,4-Enyne and Alkene. Org Lett 2015; 17:5128-31. [PMID: 26440751 DOI: 10.1021/acs.orglett.5b02665] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The first rhodium-catalyzed intramolecular [5 + 2] cycloaddition of 3-acyloxy 1,4-enyne and alkene was developed. The cycloaddition is highly diastereoselective in most cases. Various cis-fused bicyclo[5.3.0]decadienes were prepared stereoselectively. The chirality in the propargylic ester starting materials could be transferred to the bicyclic products with high efficiency. Electron-deficient phosphine ligand greatly facilitated the cycloaddition. Up to three new stereogenic centers could be generated. The resulting diene in the products could be hydrolyzed to enones, which allowed the introduction of more functional groups to the seven-membered ring.
Collapse
Affiliation(s)
- Xing-zhong Shu
- School of Pharmacy, University of Wisconsin-Madison , Madison, Wisconsin 53705, United States
| | - Casi M Schienebeck
- School of Pharmacy, University of Wisconsin-Madison , Madison, Wisconsin 53705, United States
| | - Xiaoxun Li
- School of Pharmacy, University of Wisconsin-Madison , Madison, Wisconsin 53705, United States
| | - Xin Zhou
- School of Pharmacy, University of Wisconsin-Madison , Madison, Wisconsin 53705, United States
| | - Wangze Song
- School of Pharmacy, University of Wisconsin-Madison , Madison, Wisconsin 53705, United States
| | - Lianqing Chen
- School of Pharmacy, University of Wisconsin-Madison , Madison, Wisconsin 53705, United States
| | - Ilia A Guzei
- Department of Chemistry, University of Wisconsin-Madison , Madison, Wisconsin 53706, United States
| | - Weiping Tang
- School of Pharmacy, University of Wisconsin-Madison , Madison, Wisconsin 53705, United States.,Department of Chemistry, University of Wisconsin-Madison , Madison, Wisconsin 53706, United States
| |
Collapse
|
33
|
Wang Y, Yu ZX. Rhodium-catalyzed [5 + 2 + 1] cycloaddition of ene-vinylcyclopropanes and CO: reaction design, development, application in natural product synthesis, and inspiration for developing new reactions for synthesis of eight-membered carbocycles. Acc Chem Res 2015; 48:2288-96. [PMID: 26227886 DOI: 10.1021/acs.accounts.5b00037] [Citation(s) in RCA: 158] [Impact Index Per Article: 17.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Practical syntheses of natural products and their analogues with eight-membered carbocyclic skeletons are important for medicinal and biological investigations. However, methods and strategies to construct the eight-membered carbocycles are limited. Therefore, developing new methods to synthesize the eight-membered carbocycles is highly desired. In this Account, we describe our development of three rhodium-catalyzed cycloadditions for the construction of the eight-membered carbocycles, which have great potential in addressing the challenges in the synthesis of medium-sized ring systems. The first reaction described in this Account is our computationally designed rhodium-catalyzed two-component [5 + 2 + 1] cycloaddition of ene-vinylcyclopropanes (ene-VCPs) and CO for the diastereoselective construction of bi- and tricyclic cyclooctenones. The design of this reaction is based on the hypothesis that the C(sp(3))-C(sp(3)) reductive elimination of the eight-membered rhodacycle intermediate generated from the rhodium-catalyzed cyclopropane cleavage and alkene insertion, giving Wender's [5 + 2] cycloadduct, is not easy. Under CO atmosphere, CO insertion may occur rapidly, converting the eight-membered rhodacycle into a nine-membered rhodacycle, which then undergoes an easy C(sp(2))-C(sp(3)) reductive elimination process and furnishes the [5 + 2 + 1] product. This hypothesis was supported by our preliminary DFT studies and also served as inspiration for the development of two [7 + 1] cycloadditions: the [7 + 1] cycloaddition of buta-1,3-dienylcyclopropanes (BDCPs) and CO for the construction of cyclooctadienones, and the benzo/[7 + 1] cycloaddition of cyclopropyl-benzocyclobutenes (CP-BCBs) and CO to synthesize the benzocyclooctenones. The efficiency of these rhodium-catalyzed cycloadditions can be revealed by the application in natural product synthesis. Two eight-membered ring-containing natural products, (±)-asterisca-3(15),6-diene and (+)-asteriscanolide, have been synthesized using the [5 + 2 + 1] cycloaddition as the key step. In the latter case, excellent asymmetric induction was obtained using a chiral substrate. The efficiency of the [5 + 2 + 1] reaction was further demonstrated by the synthesis of four sesquiterpene natural products, (±)-pentalenene, (+)-hirsutene, (±)-1-desoxyhypnophilin, and (±)-hirsutic acid C, containing linear or branched triquinane skeletons utilizing the tandem or stepwise [5 + 2 + 1] cycloaddition/aldol reaction strategy. With the success of [5 + 2 + 1] cycloaddition in natural product synthesis, application of the [7 + 1] and benzo/[7 + 1] cycloadditions in target- and function-oriented syntheses can be envisioned.
Collapse
Affiliation(s)
- Yi Wang
- Beijing National Laboratory
for Molecular Sciences (BNLMS), Key Laboratory of Bioorganic Chemistry
and Molecular Engineering of Ministry of Education, College of Chemistry, Peking University, Beijing 100871, China
| | - Zhi-Xiang Yu
- Beijing National Laboratory
for Molecular Sciences (BNLMS), Key Laboratory of Bioorganic Chemistry
and Molecular Engineering of Ministry of Education, College of Chemistry, Peking University, Beijing 100871, China
| |
Collapse
|
34
|
Hua YZ, Liu MM, Huang PJ, Song X, Wang MC, Chang JB. A New Strategy for Enantioselective Construction of Multisubstituted Five-Membered Oxygen Heterocycles via a Domino Michael/Hemiketalization Reaction. Chemistry 2015; 21:11994-8. [PMID: 26177976 DOI: 10.1002/chem.201501655] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2015] [Indexed: 01/05/2023]
Abstract
A new highly enantioselective domino Michael/hemiketalization reaction of α-hydroxyacetophenone with β,γ-unsaturated α-keto esters for the synthesis of 2,2,4,5-tetrasubstituted chiral tetrahydrofurans is reported. With 2 mol % intramolecular dinuclear zinc-AzePhenol complex prepared in situ from the reaction of multidentate semi-azacrown ether ligand with ZnEt2 , the corresponding anti-multisubstituted tetrahydrofuran products were obtained in up to 90 % yields, and 98 % enantiomeric excess (ee) at 0 °C for 45 min. Moreover, the products were easily converted to 2,3,5-trisubstituted 2,3-dihydrofurans without any loss in optical activity.
Collapse
Affiliation(s)
- Yuan-Zhao Hua
- College of Chemistry and Molecular Engineering, Zhengzhou University, 75, Daxue Street, Zhengzhou City, 450052 (China)
| | - Meng-Meng Liu
- College of Chemistry and Molecular Engineering, Zhengzhou University, 75, Daxue Street, Zhengzhou City, 450052 (China)
| | - Pei-Jin Huang
- College of Chemistry and Molecular Engineering, Zhengzhou University, 75, Daxue Street, Zhengzhou City, 450052 (China)
| | - Xixi Song
- College of Chemistry and Molecular Engineering, Zhengzhou University, 75, Daxue Street, Zhengzhou City, 450052 (China)
| | - Min-Can Wang
- College of Chemistry and Molecular Engineering, Zhengzhou University, 75, Daxue Street, Zhengzhou City, 450052 (China).
| | - Jun-Biao Chang
- College of Chemistry and Molecular Engineering, Zhengzhou University, 75, Daxue Street, Zhengzhou City, 450052 (China).
| |
Collapse
|
35
|
Souillart L, Cramer N. Catalytic C-C Bond Activations via Oxidative Addition to Transition Metals. Chem Rev 2015; 115:9410-64. [PMID: 26044343 DOI: 10.1021/acs.chemrev.5b00138] [Citation(s) in RCA: 804] [Impact Index Per Article: 89.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Laetitia Souillart
- Laboratory of Asymmetric Catalysis and Synthesis, Ecole Polytechnique Fédérale de Lausanne (EPFL) , Lausanne 1015, Switzerland
| | - Nicolai Cramer
- Laboratory of Asymmetric Catalysis and Synthesis, Ecole Polytechnique Fédérale de Lausanne (EPFL) , Lausanne 1015, Switzerland
| |
Collapse
|
36
|
Kawamura T, Kawaguchi Y, Sugikubo K, Inagaki F, Mukai C. Rhodium(I)-Catalyzed Cycloisomerization of Allene-Allenylcyclopropanes. European J Org Chem 2014. [DOI: 10.1002/ejoc.201403535] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
37
|
Hong X, Stevens MC, Liu P, Wender PA, Houk KN. Reactivity and chemoselectivity of allenes in Rh(I)-catalyzed intermolecular (5 + 2) cycloadditions with vinylcyclopropanes: allene-mediated rhodacycle formation can poison Rh(I)-catalyzed cycloadditions. J Am Chem Soc 2014; 136:17273-83. [PMID: 25379606 PMCID: PMC4277756 DOI: 10.1021/ja5098308] [Citation(s) in RCA: 90] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2014] [Indexed: 11/30/2022]
Abstract
Allenes are important 2π building blocks in organic synthesis and engage as 2-carbon components in many metal-catalyzed reactions. Wender and co-workers discovered that methyl substituents on the terminal allene double bond counterintuitively change the reactivities of allenes in [Rh(CO)2Cl]2-catalyzed intermolecular (5 + 2) cycloadditions with vinylcyclopropanes (VCPs). More sterically encumbered allenes afford higher cycloadduct yields, and such effects are also observed in other Rh(I)-catalyzed intermolecular cycloadditions. Through density functional theory calculations (B3LYP and M06) and experiment, we explored this enigmatic reactivity and selectivity of allenes in [Rh(CO)2Cl]2-catalyzed intermolecular (5 + 2) cycloadditions with VCPs. The apparent low reactivity of terminally unsubstituted allenes is associated with a competing allene dimerization that irreversibly sequesters rhodium. With terminally substituted allenes, steric repulsion between the terminal substituents significantly increases the barrier of allene dimerization while the barrier of the (5 + 2) cycloaddition is not affected, and thus the cycloaddition prevails. Computation has also revealed the origin of chemoselectivity in (5 + 2) cycloadditions with allene-ynes. Although simple allene and acetylene have similar reaction barriers, intermolecular (5 + 2) cycloadditions of allene-ynes occur exclusively at the terminal allene double bond. The terminal double bond is more reactive due to the enhanced d-π* backdonation. At the same time, insertion of the internal double bond of an allene-yne has a higher barrier as it would break π conjugation. Substituted alkynes are more difficult to insert compared with acetylene, because of the steric repulsion from the additional substituents. This leads to the greater reactivity of the allene double bond relative to the alkynyl group in allene-ynes.
Collapse
Affiliation(s)
- Xin Hong
- Department of Chemistry and Biochemistry, University of California, Los Angeles, Los Angeles, California 90095, United States
| | - Matthew C. Stevens
- Department
of Chemistry, Department of Chemical and Systems Biology, Stanford University, Stanford, California 94305, United States
| | - Peng Liu
- Department of Chemistry and Biochemistry, University of California, Los Angeles, Los Angeles, California 90095, United States
| | - Paul A. Wender
- Department
of Chemistry, Department of Chemical and Systems Biology, Stanford University, Stanford, California 94305, United States
| | - K. N. Houk
- Department of Chemistry and Biochemistry, University of California, Los Angeles, Los Angeles, California 90095, United States
- Department of Chemical and Biomolecular Engineering, University of California, Los Angeles, Los Angeles, California 90095, United States
| |
Collapse
|
38
|
Trost BM, Ryan MC, Rao M, Markovic TZ. Construction of Enantioenriched [3.1.0] Bicycles via a Ruthenium-Catalyzed Asymmetric Redox Bicycloisomerization Reaction. J Am Chem Soc 2014; 136:17422-5. [DOI: 10.1021/ja510968h] [Citation(s) in RCA: 70] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Barry M. Trost
- Department of Chemistry, Stanford University, Stanford, California 94305-5580, United States
| | - Michael C. Ryan
- Department of Chemistry, Stanford University, Stanford, California 94305-5580, United States
| | - Meera Rao
- Department of Chemistry, Stanford University, Stanford, California 94305-5580, United States
| | - Tim Z. Markovic
- Department of Chemistry, Stanford University, Stanford, California 94305-5580, United States
| |
Collapse
|
39
|
Chang MY, Chen YC, Chan CK. Synthesis of vinylcyclopropanes by allylation/ring-closing metathesis/Claisen rearrangement. Tetrahedron 2014. [DOI: 10.1016/j.tet.2014.09.085] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
|
40
|
Park HS, Namgung S, Shin HM, Ahn HJ, Han JW. Asymmetric Hydrosilylation of Styrene by Palladium Catalysts Coordinated with Chiral Phosphoramidite Ligands from 3,3'-Disubstituted 1,1'-Binaphthols. B KOREAN CHEM SOC 2014. [DOI: 10.5012/bkcs.2014.35.8.2243] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
|
41
|
Kawaguchi Y, Yasuda S, Kaneko A, Oura Y, Mukai C. Rhodium(I)-Catalyzed Cycloisomerization of Benzylallene-Alkynes through CH Activation. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201403990] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
|
42
|
Kawaguchi Y, Yasuda S, Kaneko A, Oura Y, Mukai C. Rhodium(I)-Catalyzed Cycloisomerization of Benzylallene-Alkynes through CH Activation. Angew Chem Int Ed Engl 2014; 53:7608-12. [DOI: 10.1002/anie.201403990] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2014] [Revised: 05/01/2014] [Indexed: 12/13/2022]
|
43
|
Schienebeck CM, Li X, Shu XZ, Tang W. 3-Acyloxy-1,4-enyne: a New Five-carbon Synthon for Rhodium-Catalyzed (5+2) Cycloadditions. PURE APPL CHEM 2014; 86:409-417. [PMID: 24839310 DOI: 10.1515/pac-2014-5042] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Seven-membered rings are ubiquitous in natural products and pharmaceutical agents and their syntheses continue to stimulate the development of novel synthetic methods. The (5+2) cycloaddition is one of the most efficient ways to access seven-membered rings since the 2-carbon components (alkenes, alkynes, or allenes) are readily available. Prior to our study, however, there was only one type of transition metal-catalyzed (5+2) cycloaddition: the reaction between vinylcyclopropanes and alkenes, alkynes, or allenes. We recently developed a new type of transition metal-catalyzed (5+2) cycloaddition, where the 5-carbon building block is 3-acyloxy-1,4-enyne (ACE). Our recent progress on Rh-catalyzed intra- and intermolecular (5+2) cycloadditions of ACEs and alkynes is summarized in this article. Using chiral propargylic esters, bicyclic products were prepared in high optical purity by the intramolecular (5+2) cycloadditions. Monocyclic seven-membered rings were synthesized by intermolecular (5+2) cycloaddition of ACEs and alkynes. Kinetic studies indicated that the rate of this intermolecular cycloaddition was significantly accelerated when the acetate was replaced by dimethylaminobenzoate. DFT calculations suggested that novel metallacycles were generated by a Rh-promoted oxidative cycloaddition of 1,4-enynes accompanied by a 1,2-acyloxy migration of propargylic esters.
Collapse
Affiliation(s)
- Casi M Schienebeck
- School of Pharmacy and Department of Chemistry, University of Wisconsin, Madison, WI 53705, USA
| | - Xiaoxun Li
- School of Pharmacy and Department of Chemistry, University of Wisconsin, Madison, WI 53705, USA
| | - Xing-Zhong Shu
- School of Pharmacy and Department of Chemistry, University of Wisconsin, Madison, WI 53705, USA
| | - Weiping Tang
- School of Pharmacy and Department of Chemistry, University of Wisconsin, Madison, WI 53705, USA
| |
Collapse
|
44
|
Souillart L, Parker E, Cramer N. Highly Enantioselective Rhodium(I)-Catalyzed Activation of Enantiotopic Cyclobutanone CC Bonds. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201311009] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
|
45
|
Souillart L, Parker E, Cramer N. Highly enantioselective rhodium(I)-catalyzed activation of enantiotopic cyclobutanone C-C bonds. Angew Chem Int Ed Engl 2014; 53:3001-5. [PMID: 24519918 DOI: 10.1002/anie.201311009] [Citation(s) in RCA: 162] [Impact Index Per Article: 16.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2013] [Indexed: 11/08/2022]
Abstract
The selective functionalization of carbon-carbon σ bonds is a synthetic strategy that offers uncommon retrosynthetic disconnections. Despite progress in C-C activation and its great importance, the development of asymmetric reactions lags behind. Rhodium(I)-catalyzed selective oxidative additions into enantiotopic C-C bonds in cyclobutanones are reported. Even operating at a reaction temperature of 130 °C, the process is characterized by outstanding enantioselectivity with the e.r. generally greater than 99.5:0.5. The intermediate rhodacycle is shown to react with a wide variety of tethered olefins to deliver complex bicyclic ketones in high yields.
Collapse
Affiliation(s)
- Laetitia Souillart
- Laboratory of Asymmetric Catalysis and Synthesis, EPFL SB ISIC LCSA BCH 4305, 1015 Lausanne (Switzerland) http://isic.epfl.ch/lcsa
| | | | | |
Collapse
|
46
|
|
47
|
Transition Metal-Catalyzed Cycloadditions of Cyclopropanes for the Synthesis of Carbocycles: C–C Activation in Cyclopropanes. Top Curr Chem (Cham) 2014; 346:195-231. [DOI: 10.1007/128_2014_527] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
|
48
|
Shu XZ, Schienebeck CM, Song W, Guzei IA, Tang W. Transfer of chirality in the rhodium-catalyzed intramolecular [5+2] cycloaddition of 3-acyloxy-1,4-enynes (ACEs) and alkynes: synthesis of enantioenriched bicyclo[5.3.0]decatrienes. Angew Chem Int Ed Engl 2013; 52:13601-5. [PMID: 24150975 PMCID: PMC3867534 DOI: 10.1002/anie.201306919] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2013] [Indexed: 12/12/2022]
Abstract
Chiral bicycles: Enantioenriched bicyclo[5.3.0]decatrienes were prepared from readily available chiral 3-acyloxy-1,4-enynes (ACEs) for the first time. In most cases, the chirality of the ACEs could be transferred to the bicyclic products with high efficiency. Inversion of the configuration was observed, thus confirming the predictions of previous computational studies.
Collapse
Affiliation(s)
- Xing-zhong Shu
- School of Pharmacy, University of Wisconsin, Madison, WI 53705-2222, Fax: (+1) 608-262-5345
| | - Casi M. Schienebeck
- School of Pharmacy, University of Wisconsin, Madison, WI 53705-2222, Fax: (+1) 608-262-5345
| | - Wangze Song
- School of Pharmacy, University of Wisconsin, Madison, WI 53705-2222, Fax: (+1) 608-262-5345
| | - Ilia A. Guzei
- Department of Chemistry University of Wisconsin Madison, WI 53706-1322
| | - Weiping Tang
- School of Pharmacy, University of Wisconsin, Madison, WI 53705-2222, Fax: (+1) 608-262-5345. Department of Chemistry University of Wisconsin Madison, WI 53706-1322
| |
Collapse
|
49
|
Shu XZ, Schienebeck CM, Song W, Guzei IA, Tang W. Transfer of Chirality in the Rhodium-Catalyzed Intramolecular [5+2] Cycloaddition of 3-Acyloxy-1,4-enynes (ACEs) and Alkynes: Synthesis of Enantioenriched Bicyclo[5.3.0]decatrienes. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201306919] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
|
50
|
Sugikubo K, Omachi F, Miyanaga Y, Inagaki F, Matsumoto C, Mukai C. Rhodium(I)-Catalyzed Cycloisomerization of Alkene-Substituted Allenylcyclopropanes: Stereoselective Formation of Bicyclo[4.3.0]nonadienes. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201305958] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
|