151
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Clavier H, Pellissier H. Recent Developments in Enantioselective Metal-Catalyzed Domino Reactions. Adv Synth Catal 2012. [DOI: 10.1002/adsc.201200254] [Citation(s) in RCA: 154] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
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152
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Kochetkov SV, Kucherenko AS, Kryshtal GV, Zhdankina GM, Zlotin SG. Simple Ionic Liquid SupportedC2-Symmetric Bisprolinamides as Recoverable Organocatalysts for the Asymmetric Aldol Reaction in the Presence of Water. European J Org Chem 2012. [DOI: 10.1002/ejoc.201201144] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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153
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Kucherenko AS, Siyutkin DE, Nigmatov AG, Chizhov AO, Zlotin SG. Chiral Primary Amine Tagged to Ionic Group as Reusable Organocatalyst for Asymmetric Michael Reactions of C-Nucleophiles with α,β-Unsaturated Ketones. Adv Synth Catal 2012. [DOI: 10.1002/adsc.201200338] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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154
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Wu H, Tian Z, Zhang L, Huang Y, Wang Y. Organocatalytic Enantioselective Aza-Michael Addition of Purine Bases to α,β-Unsaturated Ketones. Adv Synth Catal 2012. [DOI: 10.1002/adsc.201200488] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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155
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Wang C, Yang X, Raabe G, Enders D. A Short Asymmetric Synthesis of the Benzopyrano[3,4-c]pyrrolidine Coreviaan Organocatalytic Domino Oxa-Michael/Michael Reaction. Adv Synth Catal 2012. [DOI: 10.1002/adsc.201200472] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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156
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Asymmetric Michael Reaction of Acetaldehyde with Nitroolefins Catalyzed by Highly Water-Compatible Organocatalysts in Aqueous Media. Adv Synth Catal 2012. [DOI: 10.1002/adsc.201200215] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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157
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Loh CCJ, Raabe G, Enders D. Enantioselective Synthesis of Tetrahydrocarbazoles through a Michael Addition/Ciamician-Plancher Rearrangement Sequence: Asymmetric Synthesis of a Potent Constrained Analogue of MS-245. Chemistry 2012; 18:13250-4. [DOI: 10.1002/chem.201202908] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2012] [Indexed: 11/12/2022]
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158
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Molleti N, Rana NK, Singh VK. Highly Enantioselective Conjugate Addition of Malononitrile to 2-Enoylpyridines with Bifunctional Organocatalyst. Org Lett 2012; 14:4322-5. [DOI: 10.1021/ol3015607] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Nagaraju Molleti
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, ITI (Gas Rahat) Building, Govindpura, India 460 023, and Department of Chemistry, Indian Institute of Technology Kanpur, India 208 016
| | - Nirmal K. Rana
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, ITI (Gas Rahat) Building, Govindpura, India 460 023, and Department of Chemistry, Indian Institute of Technology Kanpur, India 208 016
| | - Vinod K. Singh
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, ITI (Gas Rahat) Building, Govindpura, India 460 023, and Department of Chemistry, Indian Institute of Technology Kanpur, India 208 016
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159
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Enders D, Greb A, Deckers K, Selig P, Merkens C. Quadruple Domino Organocatalysis: An Asymmetric Aza-Michael/Michael/Michael/Aldol Reaction Sequence Leading to Tetracyclic Indole Structures with Six Stereocenters. Chemistry 2012; 18:10226-9. [DOI: 10.1002/chem.201201493] [Citation(s) in RCA: 85] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2012] [Indexed: 01/03/2023]
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160
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Pyrrolidine based chiral organocatalyst for efficient asymmetric Michael addition of cyclic ketones to β-nitrostyrenes. Bioorg Med Chem Lett 2012; 22:4225-8. [DOI: 10.1016/j.bmcl.2012.05.047] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2012] [Revised: 05/09/2012] [Accepted: 05/11/2012] [Indexed: 11/18/2022]
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161
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Scarpino Schietroma DM, Monaco MR, Bucalossi V, Walter PE, Gentili P, Bella M. The Rabe amination after a century: direct addition of N-heterocycles to carbonyl compounds. Org Biomol Chem 2012; 10:4692-5. [PMID: 22596019 DOI: 10.1039/c2ob25595b] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A catalytic version of the Rabe electrophilic amination is presented. This kind of reaction was originally employed in 1918 in a key step for the conversion of quinotoxine to quinine. Ketones and α-substituted aldehydes give the corresponding α-aminated carbonyl compounds in moderate yield. α,α-Unsubstituted aldehydes give rise to amino ketones via a novel rearrangement.
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162
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Loh CCJ, Enders D. Merging Organocatalysis and Gold Catalysis-A Critical Evaluation of the Underlying Concepts. Chemistry 2012; 18:10212-25. [DOI: 10.1002/chem.201200287] [Citation(s) in RCA: 189] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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163
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Takizawa S, Nguyen TMN, Grossmann A, Enders D, Sasai H. Enantioselective Synthesis of α-Alkylidene-γ-Butyrolactones: Intramolecular Rauhut-Currier Reaction Promoted by Acid/Base Organocatalysts. Angew Chem Int Ed Engl 2012; 51:5423-6. [DOI: 10.1002/anie.201201542] [Citation(s) in RCA: 165] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2012] [Indexed: 12/18/2022]
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164
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Takizawa S, Nguyen TMN, Grossmann A, Enders D, Sasai H. Enantioselective Synthesis of α-Alkylidene-γ-Butyrolactones: Intramolecular Rauhut-Currier Reaction Promoted by Acid/Base Organocatalysts. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201201542] [Citation(s) in RCA: 71] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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165
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166
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167
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Colin O, Hermange P, Thomassigny C, Greck C. Synthesis of chiral 1,2,3-triols via organocatalyzed α-hydroxylation of protected β-hydroxyaldehydes. Tetrahedron Lett 2012. [DOI: 10.1016/j.tetlet.2011.12.078] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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168
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Asymmetric Organocatalytic Michael Addition-Cyclization Cascade Reaction of Nitroalkanes with o-Hydroxycinnamaldehydes. European J Org Chem 2012. [DOI: 10.1002/ejoc.201101794] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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169
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Kumar A, Chimni SS. Catalytic asymmetric synthesis of 3-hydroxyoxindole: a potentially bioactive molecule. RSC Adv 2012. [DOI: 10.1039/c2ra21131a] [Citation(s) in RCA: 116] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
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170
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Nibbs AE, Scheidt KA. Asymmetric Methods for the Synthesis of Flavanones, Chromanones, and Azaflavanones. European J Org Chem 2012; 2012:449-462. [PMID: 22876166 PMCID: PMC3412359 DOI: 10.1002/ejoc.201101228] [Citation(s) in RCA: 96] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2011] [Indexed: 01/29/2023]
Abstract
Flavanones, chromanones, and related structures are privileged natural products that display a wide variety of biological activities. Although flavanoids are abundant in nature, there are a limited number of available general and efficient synthetic methods for accessing molecules of this class in a stereoselective manner. Their structurally simple architectures belie the difficulties involved in installation and maintenance of the stereogenic configuration at the C2 position, which can be sensitive and can undergo epimerization under mildly acidic, basic, and thermal reaction conditions. This review presents the methods currently used to access these related structures. The synthetic methods include manipulation of the flavone/flavanone core, carbon-carbon bond formation, and carbon-heteroatom bond formation.
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Affiliation(s)
- Antoinette E. Nibbs
- Department of Chemistry, Center for Molecular Innovation and Drug Discovery, Chemistry of Life Processes Institute, Silverman Hall, Northwestern University, Evanston, IL 60208, USA, Fax: +1-847-467-2184, http://chemgroups.northwestern.edu/scheidt
| | - Karl A. Scheidt
- Department of Chemistry, Center for Molecular Innovation and Drug Discovery, Chemistry of Life Processes Institute, Silverman Hall, Northwestern University, Evanston, IL 60208, USA, Fax: +1-847-467-2184, http://chemgroups.northwestern.edu/scheidt
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171
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Chen MW, Chen QA, Duan Y, Ye ZS, Zhou YG. Asymmetric hydrogenolysis of racemic tertiary alcohols, 3-substituted 3-hydroxyisoindolin-1-ones. Chem Commun (Camb) 2012; 48:1698-700. [PMID: 22190041 DOI: 10.1039/c2cc16832d] [Citation(s) in RCA: 81] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Affiliation(s)
- Mu-Wang Chen
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian 116023, PR China
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172
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173
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Rueping M, Dufour J, Maji MS. Relay catalysis: combined metal catalyzed oxidation and asymmetric iminium catalysis for the synthesis of Bi- and tricyclic chromenes. Chem Commun (Camb) 2012; 48:3406-8. [DOI: 10.1039/c2cc00129b] [Citation(s) in RCA: 57] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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174
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Chauhan P, Chimni SS. Aromatic hydroxyl group—a hydrogen bonding activator in bifunctional asymmetric organocatalysis. RSC Adv 2012. [DOI: 10.1039/c1ra00872b] [Citation(s) in RCA: 68] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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175
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Rueping M, Merino E, Bolte M. Efficient proline and prolinol ether mediated 3-component synthesis of 3- and 3,4-substituted chromenone derivatives. Org Biomol Chem 2012; 10:6201-10. [DOI: 10.1039/c2ob25443c] [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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176
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Hong BC, Hsu CS, Lee GH. Enantioselective total synthesis of (+)-galbulin via organocatalytic domino Michael-Michael-aldol condensation. Chem Commun (Camb) 2011; 48:2385-7. [PMID: 22179766 DOI: 10.1039/c2cc16682h] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A concise and practical enantioselective synthesis of (+)-galbulin has been achieved using organocatalytic domino Michael-Michael-aldol condensation and organocatalytic kinetic resolution as the key steps.
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Affiliation(s)
- Bor-Cherng Hong
- Department of Chemistry and Biochemistry, National Chung Cheng University, Chia-Yi 621, Taiwan, ROC.
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177
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Giacalone F, Gruttadauria M, Agrigento P, Noto R. Low-loading asymmetric organocatalysis. Chem Soc Rev 2011; 41:2406-47. [PMID: 22167174 DOI: 10.1039/c1cs15206h] [Citation(s) in RCA: 287] [Impact Index Per Article: 22.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Asymmetric organocatalysis is now recognized as the third pillar of asymmetric synthesis. Recent years have witnessed increasing interest towards the use of highly active and stereoselective organocatalysts. This critical review documents the advances in the development of chiral organocatalysts which are systematically used in ≤3 mol% loading in all the sub-areas of the field, namely aminocatalysis, Brønsted acids and bases, Lewis acids and bases, hydrogen bond-mediated catalysis, phase transfer and N-heterocyclic carbene catalyses (194 references).
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Affiliation(s)
- Francesco Giacalone
- Dipartimento di Scienze e Tecnologie Molecolari e Biomolecolari (STEMBIO) Sez. Chimica Organica E. Paternò, Università di Palermo, Viale delle Scienze, Ed. 17, 90128, Palermo, Italy
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178
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Grossmann A, Enders D. Durch N-heterocyclische Carbene katalysierte Dominoreaktionen. Angew Chem Int Ed Engl 2011. [DOI: 10.1002/ange.201105415] [Citation(s) in RCA: 318] [Impact Index Per Article: 24.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
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179
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Grossmann A, Enders D. N-Heterocyclic Carbene Catalyzed Domino Reactions. Angew Chem Int Ed Engl 2011; 51:314-25. [DOI: 10.1002/anie.201105415] [Citation(s) in RCA: 880] [Impact Index Per Article: 67.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2011] [Indexed: 11/11/2022]
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180
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Pesciaioli F, Righi P, Mazzanti A, Gianelli C, Mancinelli M, Bartoli G, Bencivenni G. Cinchona Alkaloid-Catalyzed Enantioselective Direct Aldol Reaction of N-Boc-Oxindoles with Polymeric Ethyl Glyoxylate. Adv Synth Catal 2011. [DOI: 10.1002/adsc.201100499] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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181
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Loh CCJ, Badorrek J, Raabe G, Enders D. Merging organocatalysis and gold catalysis: enantioselective synthesis of tetracyclic indole derivatives through a sequential double Friedel-Crafts type reaction. Chemistry 2011; 17:13409-14. [PMID: 22025408 DOI: 10.1002/chem.201102793] [Citation(s) in RCA: 113] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2011] [Indexed: 11/08/2022]
Affiliation(s)
- Charles C J Loh
- Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52074 Aachen, Germany
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182
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Rueping M, Volla CMR, Bolte M, Raabe G. General and Efficient Organocatalytic Synthesis of Indoloquinolizidines, Pyridoquinazolines and Quinazolinones through a One-Pot Domino Michael Addition-Cyclization- Pictet-Spengler or 1,2-Amine Addition Reaction. Adv Synth Catal 2011. [DOI: 10.1002/adsc.201100258] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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183
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Ray SK, Singh PK, Singh VK. Enantioselective Michael Addition of Malonates to 2-Enoylpyridine N-Oxides Catalyzed by Chiral Bisoxazoline–Zn(II) Complex. Org Lett 2011; 13:5812-5. [DOI: 10.1021/ol202405v] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Sumit K. Ray
- Department of Chemistry, Indian Institute of Technology-Kanpur, Kanpur, UP 208 016, India, and Department of Chemistry, Indian Institute of Science Education and Research Bhopal, ITI (Gas Rahat) Building, Govindpura, Bhopal, MP 462 023, India
| | - Pradeep K. Singh
- Department of Chemistry, Indian Institute of Technology-Kanpur, Kanpur, UP 208 016, India, and Department of Chemistry, Indian Institute of Science Education and Research Bhopal, ITI (Gas Rahat) Building, Govindpura, Bhopal, MP 462 023, India
| | - Vinod K. Singh
- Department of Chemistry, Indian Institute of Technology-Kanpur, Kanpur, UP 208 016, India, and Department of Chemistry, Indian Institute of Science Education and Research Bhopal, ITI (Gas Rahat) Building, Govindpura, Bhopal, MP 462 023, India
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184
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Li H, Zhao J, Zeng L, Hu W. Organocatalytic Asymmetric Domino Aza-Michael–Mannich Reaction: Synthesis of Tetrahydroimidazopyrimidine Derivatives. J Org Chem 2011; 76:8064-9. [DOI: 10.1021/jo201301p] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Hong Li
- Guangzhou Institute of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou Science Park, Guangdong 510530, People’s Republic of China
| | - Junling Zhao
- Guangzhou Institute of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou Science Park, Guangdong 510530, People’s Republic of China
| | - Lili Zeng
- Guangzhou Institute of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou Science Park, Guangdong 510530, People’s Republic of China
| | - Wenhui Hu
- Guangzhou Institute of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou Science Park, Guangdong 510530, People’s Republic of China
- State Key Laboratory of Respiratory Disease, Guangzhou, Guangdong 510120, People’s Republic of China
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185
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Kochetkov SV, Kucherenko AS, Zlotin SG. (1R,2R)-Bis[(S)-prolinamido]cyclohexane Modified with Ionic Groups: The First C2-Symmetric Immobilized Organocatalyst for Asymmetric Aldol Reactions in Aqueous Media. European J Org Chem 2011. [DOI: 10.1002/ejoc.201100707] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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186
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Dienamine Activation in the Organocatalytic Asymmetric Synthesis of cis-3,4-Difunctionalized Chromans and Dihydrocoumarins. Chem Asian J 2011; 6:2255-9. [DOI: 10.1002/asia.201100320] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2011] [Indexed: 11/07/2022]
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187
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Enders D, Grossmann A, Huang H, Raabe G. Dual Secondary Amine/N-Heterocyclic Carbene Catalysis in the Asymmetric Michael/Cross-Benzoin Cascade Reaction of β-Oxo Sulfones with Enals. European J Org Chem 2011. [DOI: 10.1002/ejoc.201100690] [Citation(s) in RCA: 75] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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188
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1,1′-Methylene-bis(1,1′,2,2′,3,3′,4,4′-octahydroisoquinoline): synthesis, reaction, resolution, and application in catalytic enantioselective transformations. Tetrahedron 2011. [DOI: 10.1016/j.tet.2011.04.004] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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189
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2-Hydroxy-3-[(S)-prolinamido]pinanes as novel bifunctional organocatalysts for asymmetric aldol reactions in aqueous media. ACTA ACUST UNITED AC 2011. [DOI: 10.1016/j.tetasy.2011.07.013] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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190
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Moyano A, Rios R. Asymmetric organocatalytic cyclization and cycloaddition reactions. Chem Rev 2011; 111:4703-832. [PMID: 21615119 DOI: 10.1021/cr100348t] [Citation(s) in RCA: 712] [Impact Index Per Article: 54.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Albert Moyano
- Departament de Química Orgànica, Facultat de Química, Universitat de Barcelona, C. Martí i Franquès 1-11, 08028-Barcelona, Catalonia, Spain.
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191
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192
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Piovesana S, Scarpino Schietroma DM, Bella M. Multiple Catalysis with Two Chiral Units: An Additional Dimension for Asymmetric Synthesis. Angew Chem Int Ed Engl 2011; 50:6216-32. [DOI: 10.1002/anie.201005955] [Citation(s) in RCA: 148] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2010] [Indexed: 11/10/2022]
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193
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Piovesana S, Scarpino Schietroma DM, Bella M. Mehrfachkatalyse durch zwei chirale Einheiten: eine weitere Dimension in der asymmetrischen Synthese. Angew Chem Int Ed Engl 2011. [DOI: 10.1002/ange.201005955] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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194
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Maltsev OV, Chizhov AO, Zlotin SG. Chiral Ionic Liquid/ESI‐MS Methodology as an Efficient Tool for the Study of Transformations of Supported Organocatalysts: Deactivation Pathways of Jørgensen–Hayashi‐Type Catalysts in Asymmetric Michael Reactions. Chemistry 2011; 17:6109-17. [DOI: 10.1002/chem.201100388] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2011] [Indexed: 11/11/2022]
Affiliation(s)
- Oleg V. Maltsev
- N.D. Zelinsky Institute of Organic Chemistry, 119991 Moscow, Leninsky prosp., 47 (Russian Federation), Fax: (+7) 499‐135‐53‐28
- Department of Technology of Organic Compounds, D.I. Mendeleev University of Chemical Technology of Russia, 125047 Moscow, Miusskaya pl., 9 (Russian Federation)
| | - Alexander O. Chizhov
- N.D. Zelinsky Institute of Organic Chemistry, 119991 Moscow, Leninsky prosp., 47 (Russian Federation), Fax: (+7) 499‐135‐53‐28
| | - Sergei G. Zlotin
- N.D. Zelinsky Institute of Organic Chemistry, 119991 Moscow, Leninsky prosp., 47 (Russian Federation), Fax: (+7) 499‐135‐53‐28
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195
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Abstract
The use of N-heterocyclic carbenes as catalysts for organic transformations has received increased attention in the past 10 years. A discussion of catalyst development and nucleophilic characteristics precedes a description of recent advancements and new reactions using N-heterocyclic carbenes in catalysis.
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196
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Abstract
The reversible reaction of primary or secondary amines with enolizable aldehydes or ketones affords nucleophilic intermediates, enamines. With chiral amines, catalytic enantioselective reactions via enamine intermediates become possible. In this review, structure-activity relationships and the scope as well as current limitations of enamine catalysis are discussed.
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197
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Ionic polymer-supported O-trimethylsilyl-α,α-diphenyl-(S)-prolinols as recoverable organocatalysts for the asymmetric Michael reactions of carbon acids with α,β-enals. MENDELEEV COMMUNICATIONS 2011. [DOI: 10.1016/j.mencom.2011.04.011] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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198
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Stowe GN, Janda KD. A Diels-Alder Reaction Conducted Within the Parameters of Aqueous Organocatalysis: Still Just Smoke and Mirrors. Tetrahedron Lett 2011; 52:2085-2087. [PMID: 21516231 PMCID: PMC3079225 DOI: 10.1016/j.tetlet.2010.10.134] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Conducting reactions using water as solvent is a highly prized goal for the organic chemist. Based upon recent literature and our continuing interest in the field of aqueous organocatalysis, we tested the scope of an enamine based Diels-Alder reaction using (±)-nornicotine, proline and a proline derivative as aqueous organocatalysts. Unfortunately, none of the examined catalysts under aqueous conditions proved useful, leaving the aqueous Diels-Alder reaction as an elusive goal.
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Affiliation(s)
- G Neil Stowe
- Departments of Chemistry and Immunology, The Skaggs Institute for Chemical Biology and Worm Institute of Research and Medicine (WIRM), The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037
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Guerra KP, Afonso CAM. Efficient Tandem Morita-Baylis-Hillman/Double Cross-Aldol Reaction between Cyclic Enones and Formaldehyde Promoted by N-Methylpyrrolidine. European J Org Chem 2011. [DOI: 10.1002/ejoc.201001612] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Zhang G, Wang Y, Zhang W, Xu X, Zhong A, Xu D. Organocatalytic Michael Addition of Naphthoquinone with α,β-Unsaturated Ketones: Primary Amine Catalyzed Asymmetric Synthesis of Lapachol Analogues. European J Org Chem 2011. [DOI: 10.1002/ejoc.201001570] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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