51
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Park J, Cho Y, Chung Y. Rhodium-Catalyzed Pauson-Khand-Type Reaction Using Alcohol as a Source of Carbon Monoxide. Angew Chem Int Ed Engl 2010. [DOI: 10.1002/ange.201001246] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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52
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Rhodium-Catalyzed Pauson-Khand-Type Reaction Using Alcohol as a Source of Carbon Monoxide. Angew Chem Int Ed Engl 2010; 49:5138-41. [DOI: 10.1002/anie.201001246] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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53
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Affiliation(s)
- Hang‐Wai Lee
- Open Laboratory of Chirotechnology of the Institute of Molecular Technology for Drug Discovery and Synthesis, and Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Kowloon, Hong Kong
| | - Fuk‐Yee Kwong
- Open Laboratory of Chirotechnology of the Institute of Molecular Technology for Drug Discovery and Synthesis, and Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Kowloon, Hong Kong
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54
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Saito T, Furukawa N, Otani T. A facile synthesis of pyrrolo[2,3-b]quinolines via a Rh(i)-catalyzed carbodiimide-Pauson–Khand-type reaction. Org Biomol Chem 2010; 8:1126-32. [DOI: 10.1039/b924301a] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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55
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Park JH, Chang KM, Chung YK. Catalytic Pauson–Khand-type reactions and related carbonylative cycloaddition reactions. Coord Chem Rev 2009. [DOI: 10.1016/j.ccr.2009.08.005] [Citation(s) in RCA: 65] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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56
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Felpin FX, Coste J, Zakri C, Fouquet E. Preparation of 2-Quinolones by Sequential Heck Reduction-Cyclization (HRC) Reactions by Using a Multitask Palladium Catalyst. Chemistry 2009; 15:7238-45. [DOI: 10.1002/chem.200900583] [Citation(s) in RCA: 80] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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57
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Robinson MWC, Davies AM, Buckle R, Mabbett I, Taylor SH, Graham AE. Epoxide ring-opening and Meinwald rearrangement reactions of epoxides catalyzed by mesoporous aluminosilicates. Org Biomol Chem 2009; 7:2559-64. [PMID: 19503930 DOI: 10.1039/b900719a] [Citation(s) in RCA: 66] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Mesoporous aluminosilicates efficiently catalyze the ring-opening of epoxides to produce beta-alkoxyalcohols in high yields under extremely mild reaction conditions. These materials also catalyze the corresponding Meinwald rearrangement in non-nucleophilic solvents to give aldehydes which can be trapped in situ to provide the corresponding acetals in an efficient tandem process.
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58
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Omae I. Characteristic reactions of group 9 transition metal compounds in organic synthesis. Appl Organomet Chem 2009. [DOI: 10.1002/aoc.1480] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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59
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Fan L, Zhao W, Jiang W, Zhang J. One-Pot Synthesis of Fused Tricyclic Heterocycles with Quaternary Carbon Stereocenter by Sequential Pauson-Khand Reaction and Formal [3+3] Cycloaddition. Chemistry 2008; 14:9139-42. [DOI: 10.1002/chem.200801453] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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60
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Peng C, Cheng J, Wang J. Sequential Copper(I)-Catalyzed Reaction of Amines witho-Acetylenyl-Substituted Phenyldiazoacetates. Adv Synth Catal 2008. [DOI: 10.1002/adsc.200800249] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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61
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Esteruelas MA, García-Yebra C, Oliván M, Oñate E, Valencia M. Osmium-Catalyzed Allylic Alkylation. Organometallics 2008. [DOI: 10.1021/om800460h] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Miguel A. Esteruelas
- Departamento de Química Inorgánica, Instituto de Ciencia de Materiales de Aragón, Universidad de Zaragoza-CSIC, 50009 Zaragoza, Spain
| | - Cristina García-Yebra
- Departamento de Química Inorgánica, Instituto de Ciencia de Materiales de Aragón, Universidad de Zaragoza-CSIC, 50009 Zaragoza, Spain
| | - Montserrat Oliván
- Departamento de Química Inorgánica, Instituto de Ciencia de Materiales de Aragón, Universidad de Zaragoza-CSIC, 50009 Zaragoza, Spain
| | - Enrique Oñate
- Departamento de Química Inorgánica, Instituto de Ciencia de Materiales de Aragón, Universidad de Zaragoza-CSIC, 50009 Zaragoza, Spain
| | - Marta Valencia
- Departamento de Química Inorgánica, Instituto de Ciencia de Materiales de Aragón, Universidad de Zaragoza-CSIC, 50009 Zaragoza, Spain
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62
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Huang X, Miao M. Substrate-Controlled Selective Proximal and Distal C−C Bond Cleavage via Lewis Acid Mediated O-Acylation of 2-(Arylmethylene)cyclopropylaldehyde: A Stereoselective Synthesis of Bifunctional Methylenecyclobutanes and 1,3-Conjugated Dienes. J Org Chem 2008; 73:6884-7. [DOI: 10.1021/jo801021f] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Xian Huang
- Department of Chemistry, Zhejiang University (Xixi Campus), Hangzhou 310028, People’s Republic of China, and State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, People’s Republic of China
| | - Maozhong Miao
- Department of Chemistry, Zhejiang University (Xixi Campus), Hangzhou 310028, People’s Republic of China, and State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, People’s Republic of China
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63
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Pitcock WH, Lord RL, Baik MH. The mechanism of the rhodium(I)-catalyzed [2 + 2 + 1] carbocyclization reaction of dienes and CO: a computational study. J Am Chem Soc 2008; 130:5821-30. [PMID: 18380438 DOI: 10.1021/ja800856p] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The rhodium(I) catalyzed [2 + 2 + 1] carbocyclization of tethered diene-enes to afford substituted hexahydropentalenones with high levels of diastereoselectivity was modeled using density functional theory. Previously, this transformation was observed to be facile, whereas the analogous bis-ene substrate could not be cyclized under any reasonable conditions. To establish a conceptual understanding of the carbocyclization mechanism and to identify the functional role of the diene fragment we analyzed the simulated reaction mechanisms using the two parent systems. We discovered a thus far unrecognized, but intuitively plausible, role of the CO ligand for controlling the electron density at the metal center, which affects the feasibility of oxidative addition and reductive elimination steps that are key components of the mechanism. Our calculations suggest that the diene moiety is unique and required because of its ability to undergo a eta(2)-->eta(4) reorganization allowing for the thermoneutral expulsion of one CO ligand, which in turn generates an electron-rich, coordinatively saturated Rh(I) center that can efficiently promote the oxidative addition with a low barrier. A number of functionalization strategies were considered explicitly to derive a rational plan for optimizing the catalysis and to expose the roles of the different components of the reactant-catalyst complex.
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Affiliation(s)
- William H Pitcock
- Department of Chemistry and School of Informatics, Indiana University, Bloomington, Indiana 47405, USA
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64
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Omae I. Three characteristic reactions of alkynes with metal compounds in organic synthesis. Appl Organomet Chem 2008. [DOI: 10.1002/aoc.1367] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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65
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Wang H, Sawyer J, Evans P, Baik MH. Mechanistic Insight into the Diastereoselective Rhodium-Catalyzed Pauson–Khand Reaction: Role of Coordination Number in Stereocontrol. Angew Chem Int Ed Engl 2008; 47:342-5. [DOI: 10.1002/anie.200702822] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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66
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Wang H, Sawyer J, Evans P, Baik MH. Mechanistic Insight into the Diastereoselective Rhodium-Catalyzed Pauson–Khand Reaction: Role of Coordination Number in Stereocontrol. Angew Chem Int Ed Engl 2008. [DOI: 10.1002/ange.200702822] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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67
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Park JH, Chung YK. Cobalt–rhodium heterobimetallic nanoparticle-catalyzed reactions. Dalton Trans 2008:2369-78. [DOI: 10.1039/b718609f] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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68
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Ashfeld BL, Miller KA, Smith AJ, Tran K, Martin SF. Features and Applications of [Rh(CO)2Cl]2-Catalyzed Alkylations of Unsymmetrical Allylic Substrates. J Org Chem 2007; 72:9018-31. [DOI: 10.1021/jo701290b] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Brandon L. Ashfeld
- Department of Chemistry and Biochemistry, The University of Texas, Austin, Texas 78712
| | - Kenneth A. Miller
- Department of Chemistry and Biochemistry, The University of Texas, Austin, Texas 78712
| | - Anna J. Smith
- Department of Chemistry and Biochemistry, The University of Texas, Austin, Texas 78712
| | - Kristy Tran
- Department of Chemistry and Biochemistry, The University of Texas, Austin, Texas 78712
| | - Stephen F. Martin
- Department of Chemistry and Biochemistry, The University of Texas, Austin, Texas 78712
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69
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Brunel JM. Scope, limitations and mechanistic aspects in the selective homogeneous palladium-catalyzed reduction of alkenes under transfer hydrogen conditions. Tetrahedron 2007. [DOI: 10.1016/j.tet.2007.01.053] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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70
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D'Souza DM, Müller TJJ. Multi-component syntheses of heterocycles by transition-metal catalysis. Chem Soc Rev 2007; 36:1095-108. [PMID: 17576477 DOI: 10.1039/b608235c] [Citation(s) in RCA: 841] [Impact Index Per Article: 49.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
For a long time multi-component syntheses of heterocycles have undeniably been a domain of classical carbonyl condensation chemistry. However, the advent of transition-metal catalysis not only has fertilized strategies in heterocyclic synthesis by uni- and bimolecular transformations but the past decade has also witnessed a rapid development of transition-metal catalysis in new multi-component reactions (MCR). Expectedly, palladium catalyzed processes have received a dominant position, yet, other transition-metal complexes are catching up implying organometallic elementary steps that reach even further than cross-coupling and carbometallation. Besides domino MCRs that are purely based upon organometallic catalysis the sequential and consecutive combination with condensation, addition and cycloaddition steps opens a vast playground for the invention of new sequences in heterocyclic synthesis. This tutorial review outlines the underlying reaction based principles of transition-metal catalysis in multi-component syntheses of heterocycles, summarizes recent developments of palladium catalyzed MCR, and highlights the more recent contributions to MCR based heterocyclic synthesis by virtue of rhodium, ruthenium, and copper catalysis.
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Affiliation(s)
- Daniel M D'Souza
- Organisch-Chemisches Institut, Ruprecht-Karls-Universität Heidelberg, Im Neuenheimer Feld 270, 69121, Heidelberg, Germany
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71
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Watanabe T, Ueda S, Inuki S, Oishi S, Fujii N, Ohno H. One-pot synthesis of carbazoles by palladium-catalyzed N-arylation and oxidative coupling. Chem Commun (Camb) 2007:4516-8. [DOI: 10.1039/b707899d] [Citation(s) in RCA: 116] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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72
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Evans PA, Lawler MJ. Rhodium-Catalyzed Propargylic Substitution: A Divergent Approach to Propargylic and Allenyl Sulfonamides. Angew Chem Int Ed Engl 2006; 45:4970-2. [PMID: 16819738 DOI: 10.1002/anie.200600615] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- P Andrew Evans
- Department of Chemistry, Indiana University, Bloomington, IN 47405, USA.
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73
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Evans PA, Lawler MJ. Rhodium-Catalyzed Propargylic Substitution: A Divergent Approach to Propargylic and Allenyl Sulfonamides. Angew Chem Int Ed Engl 2006. [DOI: 10.1002/ange.200600615] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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74
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Ramón DJ, Yus M. Asymmetric multicomponent reactions (AMCRs): the new frontier. Angew Chem Int Ed Engl 2006; 44:1602-34. [PMID: 15719349 DOI: 10.1002/anie.200460548] [Citation(s) in RCA: 1405] [Impact Index Per Article: 78.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
Asymmetric multicomponent reactions involve the preparation of chiral compounds by the reaction of three or more reagents added simultaneously. This kind of addition and reaction has some advantages over classic divergent reaction strategies, such as lower costs, time, and energy, as well as environmentally friendlier aspects. All these advantages, together with the high level of stereoselectivity attained in some of these reactions, will force chemists in industry as in academia to adopt this new strategy of synthesis, or at least to consider it as a viable option. The positive aspects as well as the drawbacks of this strategy are discussed in this Review.
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Affiliation(s)
- Diego J Ramón
- Instituto de Síntesis Orgánica y Departamento de Química Orgánica, Facultad de Ciencias, Universidad de Alicante, Apdo. 99, 03080-Alicante, Spain
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75
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Efficient synthesis of 3-substituted 2,3-dihydroquinolin-4-ones using a one-pot sequential multi-catalytic process: Pd-catalyzed allylic amination–thiazolium salt-catalyzed Stetter reaction cascade. Tetrahedron Lett 2006. [DOI: 10.1016/j.tetlet.2006.04.095] [Citation(s) in RCA: 73] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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76
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77
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Yang Q, Ney JE, Wolfe JP. Palladium-catalyzed tandem N-arylation/carboamination reactions for the stereoselective synthesis of N-aryl-2-benzyl pyrrolidines. Org Lett 2006; 7:2575-8. [PMID: 15957894 PMCID: PMC2750836 DOI: 10.1021/ol050647u] [Citation(s) in RCA: 61] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
[reaction: see text] The tandem N-arylation/carboamination of gamma-amino alkenes with two different aryl bromides provides rapid entry to differentially arylated N-aryl-2-benzyl pyrrolidine derivatives in good yields with good to excellent levels of diastereoselectivity. The selective diarylation is achieved in a one-pot process by an in situ modification of the palladium catalyst via phosphine ligand exchange.
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Affiliation(s)
- Qifei Yang
- Department of Chemistry, University of Michigan, 930 North University Avenue, Ann Arbor, Michigan 48109-1055, USA
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78
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Goeta A, Salter MM, Shah H. New indium-mediated cyclisation reactions of tethered haloenynes in aqueous solvent systems. Tetrahedron 2006. [DOI: 10.1016/j.tet.2006.01.094] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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79
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80
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Campeau LC, Fagnou K. Palladium-catalyzed direct arylation of simple arenes in synthesis of biaryl molecules. Chem Commun (Camb) 2006:1253-64. [PMID: 16538241 DOI: 10.1039/b515481m] [Citation(s) in RCA: 482] [Impact Index Per Article: 26.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Significant progress has been made in the direct arylation of simple arenes. A number of catalyst systems have been developed which enable the intramolecular direct arylation of aryl chlorides, bromides and iodides in high yield as well as conditions capable of achieving intermolecular direct arylation with simple arenes. This account describes recent progress by our group and others in the development of these reactions.
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Affiliation(s)
- Louis-Charles Campeau
- Center for Catalysis Research and Innovation, University of Ottawa, Departement of Chemistry, 10 Marie Curie, Ottawa, Ontario, Canada K1N 6N5
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81
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Du H, Zhang X, Wang Z, Ding K. One catalyst for two distinct reactions: sequential asymmetric hetero Diels–Alder reaction and diethylzinc addition. Tetrahedron 2005. [DOI: 10.1016/j.tet.2005.08.007] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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82
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Cook GR, Saraswathiamma M. Hydrogen-bond directed palladium-catalyzed allylic substitution of cyclic substrates. Tetrahedron Lett 2005. [DOI: 10.1016/j.tetlet.2005.07.096] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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83
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Affiliation(s)
- Julia-Christina Wasilke
- Department of Chemistry and Biochemistry, Institute for Polymers and Organic Solids, University of California, Santa Barbara, California 93106, USA
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84
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Heutling A, Pohlki F, Bytschkov I, Doye S. Sequenzielles Ti-katalysiertes Hydroaminierungs/Hydrosilylierungs-Verfahren. Angew Chem Int Ed Engl 2005. [DOI: 10.1002/ange.200462250] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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85
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Heutling A, Pohlki F, Bytschkov I, Doye S. Hydroamination/Hydrosilylation Sequence Catalyzed by Titanium Complexes. Angew Chem Int Ed Engl 2005; 44:2951-4. [PMID: 15822138 DOI: 10.1002/anie.200462250] [Citation(s) in RCA: 88] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Andreas Heutling
- Organisch-Chemisches Institut, Ruprecht-Karls-Universität Heidelberg, Im Neuenheimer Feld 270, 69120 Heidelberg, Germany
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86
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Park K, Chung Y. Immobilized Co/Rh Heterobimetallic Nanoparticle-Catalyzed Pauson-Khand-Type Reaction. Adv Synth Catal 2005. [DOI: 10.1002/adsc.200404298] [Citation(s) in RCA: 54] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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87
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Ashfeld BL, Miller KA, Smith AJ, Tran K, Martin SF. [Rh(CO)2Cl]2-Catalyzed Domino Reactions Involving Allylic Substitution and Subsequent Carbocyclization Reactions. Org Lett 2005; 7:1661-3. [PMID: 15816777 DOI: 10.1021/ol0504300] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
[reaction: see text] Three novel domino reaction processes have been discovered and developed that employ the regioselective and stereoselective [Rh(CO)(2)Cl](2)-catalyzed alkylations of allylic trifluoroacetates with alpha-substituted sodiomalonates followed by an intramolecular Pauson-Khand annulation, a [5 + 2] cycloaddition, or a cycloisomerization. A unique aspect of the methodology is that a single catalyst is used to effect sequential transformations simply by increasing the temperature for the second reaction.
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Affiliation(s)
- Brandon L Ashfeld
- Department of Chemistry and Biochemistry, The University of Texas at Austin, Austin, Texas 78712, USA
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88
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Ramón DJ, Yus M. Neue Entwicklungen in der asymmetrischen Mehrkomponenten-Reaktion. Angew Chem Int Ed Engl 2005. [DOI: 10.1002/ange.200460548] [Citation(s) in RCA: 352] [Impact Index Per Article: 18.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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89
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Tosaki SY, Tsuji R, Ohshima T, Shibasaki M. Dynamic Ligand Exchange of the Lanthanide Complex Leading to Structural and Functional Transformation: One-Pot Sequential Catalytic Asymmetric Epoxidation-Regioselective Epoxide-Opening Process. J Am Chem Soc 2005; 127:2147-55. [PMID: 15713092 DOI: 10.1021/ja043770+] [Citation(s) in RCA: 91] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The characteristic property of the lanthanide complex, which easily undergoes a dynamic ligand exchange and alters its structure and function in situ, is described. After the completion of the catalytic asymmetric epoxidation of various alpha,beta-unsaturated amides 2 in the presence of the Sm-(S)-BINOL-Ph3As=O (1:1:1) complex 1 (2-10 mol %), the addition of Me3SiN3 directly to the reaction mixture led to smooth epoxide-opening at room temperature, affording the corresponding anti-beta-azido-alpha-hydroxyamide 4 in excellent overall yield (up to 99%) with complete regioselectivity and excellent enantiomeric excess (up to >99%). The key to the success of the sequential process was the in situ generation of the highly reactive samarium azide complex through dynamic ligand exchange. In situ IR spectroscopy and other experiments provided strong evidence that the samarium azide complex was generated. In addition, the relatively high Lewis basicity of the amide moiety had a key role in the high reactivity of both the epoxidation and the epoxide-opening reactions. Examinations of other nucleophiles such as sulfur or carbon nucleophiles as well as transformations of epoxide-opened products are also described.
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Affiliation(s)
- Shin-ya Tosaki
- Graduate School of Pharmaceutical Sciences, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
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90
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Baik MH, Baum EW, Burland MC, Evans PA. Diastereoselective Intermolecular Rhodium-Catalyzed [4 + 2 + 2] Carbocyclization Reactions: Computational and Experimental Evidence for the Intermediacy of an Alternative Metallacycle Intermediate. J Am Chem Soc 2005; 127:1602-3. [PMID: 15700970 DOI: 10.1021/ja043521l] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Intermolecular rhodium-catalyzed [m + n + o] reactions of 1,6-enynes and various pi-components (carbon monoxide, alkynes, 1,3-butadienes, etc.) provide an expeditious approach for the construction of polycyclic fragments that represent important synthons for target-directed synthesis. We present computational and experimental evidence for the existence of a previously undescribed reaction pathway for the rhodium-catalyzed [4 + 2 + 2] reaction involving a 1,6-enyne. This model clearly demonstrates the origin of the excellent diastereoselectivity in this type of reaction and the remarkable tolerance of both (E)- and (Z)-isomers within the 1,6-enyne, which is generally prone to competitive ene-cycloisomerization.
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Affiliation(s)
- Mu-Hyun Baik
- Department of Chemistry and School of Informatics, Indiana University, Bloomington, IN 47405, USA.
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91
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92
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Nishibayashi Y, Yoshikawa M, Inada Y, Hidai M, Uemura S. Ruthenium- and Platinum-Catalyzed Sequential Reactions: Selective Synthesis of Fused Polycyclic Compounds from Propargylic Alcohols and Alkenes. J Am Chem Soc 2004; 126:16066-72. [PMID: 15584741 DOI: 10.1021/ja045532k] [Citation(s) in RCA: 78] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A simple method for the preparation of fused polycyclic compounds by an intramolecular cyclization of propargylic alcohols bearing an alkene moiety at a suitable position has been developed, where the presence of both Ru and Pt catalysts promotes a sequence of catalytic cycles in the same medium. This sequential system can be applied to an intermolecular reaction between a propargylic alcohol and an alkene to obtain the corresponding bicyclo[3,1,0]hex-2-ene derivative. These sequential reactions provide a conceptually new type of cycloaddition system between propargylic alcohols and alkenes.
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Affiliation(s)
- Yoshiaki Nishibayashi
- Department of Energy and Hydrocarbon Chemistry, Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto 615-8510, Japan.
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93
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94
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Nakamura I, Yamamoto Y. Transition-Metal-Catalyzed Reactions in Heterocyclic Synthesis. Chem Rev 2004; 104:2127-98. [PMID: 15137788 DOI: 10.1021/cr020095i] [Citation(s) in RCA: 1294] [Impact Index Per Article: 64.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Itaru Nakamura
- Department of Chemistry, Graduate School of Science, Tohoku University, Sendai 980-8578, Japan
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95
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Lautens M, Fagnou K. Rhodium-catalyzed asymmetric ring opening reactions of oxabicyclic alkenes: catalyst and substrate studies leading to a mechanistic working model. Proc Natl Acad Sci U S A 2004; 101:5455-60. [PMID: 15067134 PMCID: PMC397404 DOI: 10.1073/pnas.0307271101] [Citation(s) in RCA: 95] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Catalyst and substrate studies have been performed on the rhodium-catalyzed asymmetric ring opening reaction. A working model is advanced that involves oxidative insertion with retention to form an organorhodium intermediate that then undergoes nucleophilic attack with inversion. Kinetic and competition experiments have uncovered evidence for a proton transfer step in the catalytic cycle that may activate both the allylrhodium intermediate and the nucleophile. We have also conducted experiments designed to understand which properties of the PPF-P(t)Bu(2) ligand contribute to the high reactivities and enantioselectivities.
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Affiliation(s)
- Mark Lautens
- Davenport Research Laboratories, Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, ON, Canada M5S 3H6.
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96
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Gais HJ, Reddy LR, Babu GS, Raabe G. Asymmetric Synthesis of 2,3-Dihydrofurans and of Unsaturated Bicyclic Tetrahydrofurans through α-Elimination and Migratory Cyclization of Silyloxy Alkenyl Aminosulfoxonium Salts. Generation and Intramolecular O,Si-Bond Insertion of Chiral Disubstituted β-Silyloxy Alkylidene Carbenes. J Am Chem Soc 2004; 126:4859-64. [PMID: 15080690 DOI: 10.1021/ja030501v] [Citation(s) in RCA: 59] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Treatment of the bis(allylsulfoximine)titanium complexes derived from the beta-methyl-substituted acyclic allylic sulfoximines 13a and 13b with aldehydes gave with high selectivities the corresponding sulfoximine-substituted homoallylic alcohols which were isolated as the silyl ethers 15a-h. Methylation of sulfoximines 15a-h afforded the aminosulfoxonium salts 5a-h which upon treatment with LiN(H)tBu gave in high yields the enantio- and diastereomerically pure silyl-substituted 2,3-dihydrofurans 4a-h. Treatment of the titanium complexes derived from the cyclic allylic sulfoximines 17a, 17b, and ent-17c with p-MeOC(6)H(4)CHO delivered with high selectivities the corresponding sulfoximine-substituted cyclic homoallylic alcohols which were isolated as the silyl ethers 18a, 18b, and ent-18c, respectively. Methylation of sulfoximines 18a, 18b, and ent-18c furnished the aminosulfoxonium salts 8a, 8b, and ent-8c, respectively, whose treatment with LiN(H)t-Bu gave the enantio- and diastereomerically pure fused bicyclic 2,3-dihydrofurans 6a, 6b, and ent-6c, respectively, in good yields. It is proposed that the 1-alkenyl aminosulfoxonium salts 5a-h, 8a, 8b, and ent-8c react with the base under alpha-elimination and formation of the acyclic and cyclic beta-silyloxy alkylidene carbenes 2a-h, 7a, 7b, and ent-7c, respectively, which then undergo a 1,5-O,Si-bond insertion and 1,2-silyl migration. The cyclic aminosulfoxonium salts 8a, 8b, and ent-8c upon treatment with 1,8-diazabicyclo[5.4.0]-7-undecene did not undergo an alpha-elimination but suffered a novel migratory cyclization with formation of the enantio- and diastereomerically pure bicyclic tetrahydrofurans 9a, 9b, and ent-9c, respectively. It is proposed that the 1-alkenyl sulfoxonium salts 8a, 8b, and ent-8c are isomerized to the allylic aminosulfoxonium salts 10a, 10b, and ent-10c, respectively, which then suffer an intramolecular substitution of the (dimethylamino)sulfoxonium group by the silyloxy group followed by a desilylation. The syntheses of the 2,3-dihydrofurans 4a-h, 6a, and 6b and of the tetrahydrofurans 9a and 9b are accompanied by the formation of sulfinamide 16 of >or=98% ee, which can be converted via sulfoxide 28 of >or=98% to the starting sulfoximine 11 of >or=98% ee.
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Affiliation(s)
- Hans-Joachim Gais
- Institut für Organische Chemie der Rheinisch-Westfälischen Technischen Hochschule (RWTH) Aachen, Prof.-Pirlet-Strasse 1, D-52056 Aachen, Germany.
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97
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Fischer C, Defieber C, Suzuki T, Carreira EM. Readily Available [2.2.2]-Bicyclooctadienes as New Chiral Ligands for Ir(I): Catalytic, Kinetic Resolution of Allyl Carbonates. J Am Chem Soc 2004; 126:1628-9. [PMID: 14871082 DOI: 10.1021/ja0390707] [Citation(s) in RCA: 399] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
We report an Ir(I)-catalyzed kinetic resolution of secondary allylic carbonates allowing for their isolation in up to 98% ee. Importantly, the study documents the synthesis and use of a new class of chiral [2.2.2]-bicyclooctadiene ligands for iridium.
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Affiliation(s)
- Christian Fischer
- Laboratorium für Organische Chemie, ETH Hönggerberg, CH-8093 Zürich, Switzerland
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98
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Yeh MCP, Tsao WC, Ho JS, Tai CC, Chiou DY, Tu LH. Rhodium(I)-Catalyzed Intramolecular Cyclohexadienyl Pauson−Khand Reaction: Facile Approach to Tricarbocycles. Organometallics 2004. [DOI: 10.1021/om030634p] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Ming-Chang P. Yeh
- Department of Chemistry, National Taiwan Normal University, 88 Ding-Jou Road, Section 4, Taipei 117, Taiwan
| | - Wen-Cheng Tsao
- Department of Chemistry, National Taiwan Normal University, 88 Ding-Jou Road, Section 4, Taipei 117, Taiwan
| | - Jin-Shen Ho
- Department of Chemistry, National Taiwan Normal University, 88 Ding-Jou Road, Section 4, Taipei 117, Taiwan
| | - Chih-Chuan Tai
- Department of Chemistry, National Taiwan Normal University, 88 Ding-Jou Road, Section 4, Taipei 117, Taiwan
| | - Dai-Yu Chiou
- Department of Chemistry, National Taiwan Normal University, 88 Ding-Jou Road, Section 4, Taipei 117, Taiwan
| | - Ling-Hsien Tu
- Department of Chemistry, National Taiwan Normal University, 88 Ding-Jou Road, Section 4, Taipei 117, Taiwan
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99
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Ohshima T, Nemoto T, Tosaki SY, Kakei H, Gnanadesikan V, Shibasaki M. Catalytic asymmetric epoxidation of α,β-unsaturated carboxylic acid imidazolides and amides by lanthanide–BINOL complexes. Tetrahedron 2003. [DOI: 10.1016/j.tet.2003.06.010] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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100
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Evans P, Leahy DK, Slieker LM. Halide ion effects in the rhodium-catalyzed allylic substitution reaction using copper(I) alkoxides and enolates. ACTA ACUST UNITED AC 2003. [DOI: 10.1016/j.tetasy.2003.08.044] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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