51
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Hu S, Wang B, Zhang Y, Tang W, Fang M, Lu T, Du D. N-Heterocyclic carbene-catalyzed annulation of cyclic β-enamino esters with enals: access to functionalized indolo[2,3-a]quinolizidines. Org Biomol Chem 2015; 13:4661-7. [DOI: 10.1039/c5ob00176e] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
A novel synthetic approach to functionalized indolo[2,3-a]quinolizidines is developed via an N-heterocyclic carbene-catalyzed annulation of cyclic β-enamino esters with enals.
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Affiliation(s)
- Shihe Hu
- State Key Laboratory of Natural Medicines
- Department of Organic Chemistry
- China Pharmaceutical University
- Nanjing
- P. R. China
| | - Bingyang Wang
- State Key Laboratory of Natural Medicines
- Department of Organic Chemistry
- China Pharmaceutical University
- Nanjing
- P. R. China
| | - Yu Zhang
- State Key Laboratory of Natural Medicines
- Department of Organic Chemistry
- China Pharmaceutical University
- Nanjing
- P. R. China
| | - Weifang Tang
- State Key Laboratory of Natural Medicines
- Department of Organic Chemistry
- China Pharmaceutical University
- Nanjing
- P. R. China
| | - Mengyuan Fang
- State Key Laboratory of Natural Medicines
- Department of Organic Chemistry
- China Pharmaceutical University
- Nanjing
- P. R. China
| | - Tao Lu
- State Key Laboratory of Natural Medicines
- Department of Organic Chemistry
- China Pharmaceutical University
- Nanjing
- P. R. China
| | - Ding Du
- State Key Laboratory of Natural Medicines
- Department of Organic Chemistry
- China Pharmaceutical University
- Nanjing
- P. R. China
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52
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Ni Q, Xiong J, Song X, Raabe G, Enders D. NHC-catalyzed activation of α,β-unsaturated N-acyltriazoles: an easy access to dihydropyranones. Chem Commun (Camb) 2015; 51:14628-31. [DOI: 10.1039/c5cc06044c] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Employing the NHC-catalyzed activation of α,β-unsaturated N-acyltriazoles an efficient enantioselective synthesis of dihydropyranones via a formal [3+3] cycloaddition with 1,3-dicarbonyl compounds is described.
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Affiliation(s)
- Qijian Ni
- Institute of Organic Chemistry
- RWTH Aachen University
- 52074 Aachen
- Germany
| | - Jiawen Xiong
- Institute of Organic Chemistry
- RWTH Aachen University
- 52074 Aachen
- Germany
| | - Xiaoxiao Song
- Institute of Organic Chemistry
- RWTH Aachen University
- 52074 Aachen
- Germany
| | - Gerhard Raabe
- Institute of Organic Chemistry
- RWTH Aachen University
- 52074 Aachen
- Germany
| | - Dieter Enders
- Institute of Organic Chemistry
- RWTH Aachen University
- 52074 Aachen
- Germany
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53
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Fraile A, Parra A, Tortosa M, Alemán J. Organocatalytic transformations of alkynals, alkynones, propriolates, and related electron-deficient alkynes. Tetrahedron 2014. [DOI: 10.1016/j.tet.2014.07.023] [Citation(s) in RCA: 57] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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54
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Yang YJ, Zhang HR, Zhu SY, Zhu P, Hui XP. Highly stereoselective synthesis of functionalized pyrrolo[3,2-c]quinolines via N-heterocyclic carbene catalyzed cascade sequence. Org Lett 2014; 16:5048-51. [PMID: 25247840 DOI: 10.1021/ol5023917] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
An N-heterocyclic carbene-catalyzed stereoselective Michael-Mannich-lactamization cascade reaction of tosyl-protected o-amino aromatic aldimines and 2-bromoenals for the construction of functionalized pyrrolo[3,2-c]quinolines with three consecutive stereocenters was achieved in good yields with excellent diastereo- and enantioselectivities.
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Affiliation(s)
- Yu-Jie Yang
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University , Lanzhou 730000, P. R. China
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55
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Zheng C, Yao W, Zhang Y, Ma C. Chiral Spirooxindole–Butenolide Synthesis through Asymmetric N-Heterocyclic Carbene-Catalyzed Formal (3 + 2) Annulation of 3-Bromoenals and Isatins. Org Lett 2014; 16:5028-31. [DOI: 10.1021/ol502365r] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Chenguang Zheng
- Department of Chemistry, Zhejiang University, 20 Yugu Road, Hangzhou 310027, China
| | - Weijun Yao
- Department of Chemistry, Zhejiang University, 20 Yugu Road, Hangzhou 310027, China
| | - Yucheng Zhang
- Department of Chemistry, Zhejiang University, 20 Yugu Road, Hangzhou 310027, China
| | - Cheng Ma
- Department of Chemistry, Zhejiang University, 20 Yugu Road, Hangzhou 310027, China
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56
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Majee D, Biswas S, Mobin SM, Samanta S. An expedient one-pot sequential three-component reaction for the stereoselective synthesis of functionalized spiro-sulfamidate imine fused δ-lactone scaffold. Tetrahedron Lett 2014. [DOI: 10.1016/j.tetlet.2014.06.088] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
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57
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Lee A, Scheidt KA. A cooperative N-heterocyclic carbene/chiral phosphate catalysis system for allenolate annulations. Angew Chem Int Ed Engl 2014; 53:7594-8. [PMID: 24895280 PMCID: PMC4142640 DOI: 10.1002/anie.201403446] [Citation(s) in RCA: 65] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2014] [Revised: 04/08/2014] [Indexed: 11/09/2022]
Abstract
The highly enantioselective NHC-catalyzed [3+2] annulation reaction with α,β-alkynals and α-ketoesters has been developed. A new mode of cooperative catalysis involving the combination of a chiral Brønsted acid and a C1-symmetric biaryl saturated-imidazolium precatalyst was required to generate the desired γ-crotonolactones in high yields and levels of enantioselectivity.
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Affiliation(s)
- Anna Lee
- Department of Chemistry Center for Molecular Innovation and Drug Discovery Northwestern University 2145 Sheridan Road, Evanston, IL 60208 (USA)
| | - Karl A. Scheidt
- Department of Chemistry Center for Molecular Innovation and Drug Discovery Northwestern University 2145 Sheridan Road, Evanston, IL 60208 (USA)
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58
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Lee A, Scheidt KA. A Cooperative N-Heterocyclic Carbene/Chiral Phosphate Catalysis System for Allenolate Annulations. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201403446] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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59
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Zhao S, Lin JB, Zhao YY, Liang YM, Xu PF. Hydrogen-Bond-Directed Formal [5 + 1] Annulations of Oxindoles with Ester-Linked Bisenones: Facile Access to Chiral Spirooxindole δ-Lactones. Org Lett 2014; 16:1802-5. [DOI: 10.1021/ol500547e] [Citation(s) in RCA: 68] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Shuai Zhao
- State Key Laboratory of Applied
Organic Chemistry, and College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
| | - Jun-Bing Lin
- State Key Laboratory of Applied
Organic Chemistry, and College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
| | - Yuan-Yuan Zhao
- State Key Laboratory of Applied
Organic Chemistry, and College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
| | - Yong-Min Liang
- State Key Laboratory of Applied
Organic Chemistry, and College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
| | - Peng-Fei Xu
- State Key Laboratory of Applied
Organic Chemistry, and College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
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60
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Zhang Y, Lu Y, Tang W, Lu T, Du D. Cooperative N-heterocyclic carbene (NHC)–Lewis acid-mediated regioselective umpolung formal [3 + 2] annulations of alkynyl aldehydes with isatins. Org Biomol Chem 2014; 12:3009-15. [DOI: 10.1039/c4ob00145a] [Citation(s) in RCA: 59] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
A novel synthesis of spirooxindoles has been developed by cooperative NHC–Lewis acid-mediated formal [3 + 2] annulations of alkynyl aldehydes with isatins.
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Affiliation(s)
- Yu Zhang
- State Key Laboratory of Natural Medicines
- Department of Organic Chemistry
- China Pharmaceutical University
- Nanjing, P. R. China
| | - Yingyan Lu
- State Key Laboratory of Natural Medicines
- Department of Organic Chemistry
- China Pharmaceutical University
- Nanjing, P. R. China
| | - Weifang Tang
- State Key Laboratory of Natural Medicines
- Department of Organic Chemistry
- China Pharmaceutical University
- Nanjing, P. R. China
| | - Tao Lu
- State Key Laboratory of Natural Medicines
- Department of Organic Chemistry
- China Pharmaceutical University
- Nanjing, P. R. China
| | - Ding Du
- State Key Laboratory of Natural Medicines
- Department of Organic Chemistry
- China Pharmaceutical University
- Nanjing, P. R. China
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61
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Domingo LR, Sáez JA, Arnó M. A DFT study on the NHC catalysed Michael addition of enols to α,β-unsaturated acyl-azoliums. A base catalysed C–C bond-formation step. Org Biomol Chem 2014; 12:895-904. [DOI: 10.1039/c3ob41924j] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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62
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Han R, Qi J, Gu J, Ma D, Xie X, She X. N-Heterocyclic Carbene-Catalyzed Formal [3+2] Annulation of Alkynyl Aldehydes with Nitrosobenzenes: A Highly Regioselective Umpolung Strategy. ACS Catal 2013. [DOI: 10.1021/cs400602v] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- Runfeng Han
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry
and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
| | - Jing Qi
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry
and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
| | - Jixiang Gu
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry
and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
| | - Donghui Ma
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry
and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
| | - Xingang Xie
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry
and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
| | - Xuegong She
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry
and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
- State Key Laboratory for Oxo Synthesis
and Selective Oxidation, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, P. R. China
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63
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Zhang HR, Dong ZW, Yang YJ, Wang PL, Hui XP. N-heterocyclic carbene-catalyzed stereoselective cascade reaction: synthesis of functionalized tetrahydroquinolines. Org Lett 2013; 15:4750-3. [PMID: 24020617 DOI: 10.1021/ol4024985] [Citation(s) in RCA: 76] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The first N-heterocyclic carbene-catalyzed stereoselective aza-Michael-Michael-lactonization cascade reaction of 2'-aminophenylenones and 2-bromoenals for the construction of chiral functionalized tetrahydroquinolines with three consecutive stereogenic centers has been achieved in high yields (up to 98%) with excellent diastereo- (>25:1) and enantioselectivities (up to 98.7% ee).
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Affiliation(s)
- Hai-Rui Zhang
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University , Lanzhou 730000, P. R. China
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64
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Cheng J, Huang Z, Chi YR. NHC Organocatalytic Formal LUMO Activation of α,β-Unsaturated Esters for Reaction with Enamides. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201303247] [Citation(s) in RCA: 60] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
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65
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Cheng J, Huang Z, Chi YR. NHC Organocatalytic Formal LUMO Activation of α,β-Unsaturated Esters for Reaction with Enamides. Angew Chem Int Ed Engl 2013; 52:8592-6. [DOI: 10.1002/anie.201303247] [Citation(s) in RCA: 186] [Impact Index Per Article: 16.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2013] [Revised: 06/07/2013] [Indexed: 12/24/2022]
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66
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ElSohly AM, Wespe DA, Poore TJ, Snyder SA. An Efficient Approach to the Securinega Alkaloids Empowered by Cooperative N-Heterocyclic Carbene/Lewis Acid Catalysis. Angew Chem Int Ed Engl 2013; 52:5789-94. [DOI: 10.1002/anie.201301849] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2013] [Indexed: 11/10/2022]
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67
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ElSohly AM, Wespe DA, Poore TJ, Snyder SA. An Efficient Approach to the Securinega Alkaloids Empowered by Cooperative N-Heterocyclic Carbene/Lewis Acid Catalysis. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201301849] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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68
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Zhou B, Luo Z, Li Y. Assembly of Spirooxindole Derivatives Containing Four Consecutive Stereocenters by Using Cascade Reactions Catalyzed by an N-Heterocyclic Carbene. Chemistry 2013; 19:4428-31. [DOI: 10.1002/chem.201203436] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2012] [Revised: 01/14/2013] [Indexed: 11/10/2022]
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69
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Qi J, Xie X, Han R, Ma D, Yang J, She X. N-Heterocyclic Carbene (NHC)-Catalyzed/Lewis Acid Mediated Conjugate Umpolung of Alkynyl Aldehydes for the Synthesis of Butenolides: A Formal [3+2] Annulation. Chemistry 2013; 19:4146-50. [DOI: 10.1002/chem.201204386] [Citation(s) in RCA: 58] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2012] [Indexed: 11/11/2022]
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70
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Tan F, Cheng HG, Feng B, Zou YQ, Duan SW, Chen JR, Xiao WJ. Highly Enantioselective Organocatalytic Michael Addition/Cyclization Cascade Reaction of Ylideneoxindoles with Isothiocyanato Oxindoles: A Formal [3+2] Cycloaddition Approach to Optically Active Bispirooxindole Derivatives. European J Org Chem 2013. [DOI: 10.1002/ejoc.201300081] [Citation(s) in RCA: 66] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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71
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Lu Y, Tang W, Zhang Y, Du D, Lu T. N-Heterocyclic Carbene-Catalyzed Annulations of Enals and Ynals with Indolin-3-ones: Synthesis of 3,4-Dihydropyrano[3,2-b]indol-2-ones. Adv Synth Catal 2013. [DOI: 10.1002/adsc.201200716] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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72
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Candish L, Lupton DW. N-heterocyclic carbene-catalyzed Ireland-Coates Claisen rearrangement: synthesis of functionalized β-lactones. J Am Chem Soc 2012; 135:58-61. [PMID: 23244238 DOI: 10.1021/ja310449k] [Citation(s) in RCA: 143] [Impact Index Per Article: 11.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
The N-heterocyclic carbene (NHC)-catalyzed Claisen rearrangement of hybrid Ireland-Coates structures has been achieved, allowing the stereoselective synthesis of highly functionalized β-lactones. The reaction proceeds with high diastereoselectivity (>20:1) and affords a diverse range of β-lactone fused cyclopentanes. Mechanistic studies are detailed.
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Affiliation(s)
- Lisa Candish
- School of Chemistry, Monash University, Clayton, Victoria 3800, Australia
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73
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Romanov-Michailidis F, Besnard C, Alexakis A. N-Heterocyclic Carbene-Catalyzed Annulation of α-Cyano-1,4-diketones with Ynals. Org Lett 2012; 14:4906-9. [DOI: 10.1021/ol3022287] [Citation(s) in RCA: 68] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Fedor Romanov-Michailidis
- Department of Organic Chemistry, University of Geneva, quai Ernest Ansermet 30, CH-1211 Geneva 4, Switzerland
| | - Céline Besnard
- Department of Organic Chemistry, University of Geneva, quai Ernest Ansermet 30, CH-1211 Geneva 4, Switzerland
| | - Alexandre Alexakis
- Department of Organic Chemistry, University of Geneva, quai Ernest Ansermet 30, CH-1211 Geneva 4, Switzerland
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74
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Sun ZX, Cheng Y. One-Step Formation both of C-N and of C-O Bonds of N-Alkoxyamides through NHC-Catalyzed Three-Component Reactions of Enals, Nitrosoarenes, and Enones. European J Org Chem 2012. [DOI: 10.1002/ejoc.201200525] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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75
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Bertolasi V, Bortolini O, Donvito A, Fantin G, Fogagnolo M, Giovannini PP, Massi A, Pacifico S. Unexpected reactivity of diaryl α-diketones with thiazolium carbenes: discovery of a novel multicomponent reaction for the facile synthesis of 1,4-thiazin-3-ones. Org Biomol Chem 2012; 10:6579-86. [DOI: 10.1039/c2ob25928a] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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76
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Huang XF, Liu ZM, Geng ZC, Zhang SY, Wang Y, Wang XW. Enantioselective construction of multifunctionalized spirocyclohexaneoxindoles through organocatalytic Michael–Aldol cyclization of isatin derived alkenes with linear dialdehydes. Org Biomol Chem 2012; 10:8794-9. [DOI: 10.1039/c2ob26205c] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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77
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Zhou F, Ding M, Zhou J. A catalytic metal-free Ritter reaction to 3-substituted 3-aminooxindoles. Org Biomol Chem 2012; 10:3178-81. [DOI: 10.1039/c2ob25319d] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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