1
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Champetter P, Alahyen I, Taillier C, Brière J, Dalla V, Oudeyer S, Comesse S. Probing
N
‐Alkoxy Effects in Domino Reactions of α‐Bromoacetamide Derivatives Towards Functionalized γ‐Lactams. ChemistrySelect 2022. [DOI: 10.1002/slct.202203305] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
| | - Ismail Alahyen
- Normandie Univ, UNILEHAVRE FR 3038 CNRS, URCOM 76600 Le Havre France
| | | | | | - Vincent Dalla
- Normandie Univ, UNILEHAVRE FR 3038 CNRS, URCOM 76600 Le Havre France
| | - Sylvain Oudeyer
- Normandie Univ, UNIROUEN, INSA Rouen, CNRS, COBRA 76000 Rouen France
| | - Sébastien Comesse
- Normandie Univ, UNILEHAVRE FR 3038 CNRS, URCOM 76600 Le Havre France
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2
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Lapetaje JE, Young CM, Shu C, Smith AD. Isothiourea-catalyzed formal enantioselective conjugate addition of benzophenone imines to β-fluorinated α,β-unsaturated esters. Chem Commun (Camb) 2022; 58:6886-6889. [PMID: 35635248 DOI: 10.1039/d2cc01936a] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The isothiourea-catalyzed formal enantioselective conjugate addition of 2-hydroxybenzophenone imine derivatives to α,β-unsaturated para-nitrophenyl esters has been developed. Investigations of the scope and limitations of this procedure showed that β-electron withdrawing substituents within the α,β-unsaturated ester component are required for good product yield, giving rise to a range of β-imino ester and amide derivatives in moderate to good isolated yields with excellent enantioselectivity (20 examples, up to 81% yield and 97 : 3 er).
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Affiliation(s)
- Jerson E Lapetaje
- EaStCHEM, School of Chemistry, University of St Andrews, North Haugh, St. Andrews KY16 9ST, UK.
| | - Claire M Young
- EaStCHEM, School of Chemistry, University of St Andrews, North Haugh, St. Andrews KY16 9ST, UK.
| | - Chang Shu
- EaStCHEM, School of Chemistry, University of St Andrews, North Haugh, St. Andrews KY16 9ST, UK.
| | - Andrew D Smith
- EaStCHEM, School of Chemistry, University of St Andrews, North Haugh, St. Andrews KY16 9ST, UK.
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3
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Guerrero‐Corella A, Valle‐Amores MA, Fraile A, Alemán J. Enantioselective Organocatalyzed
aza
‐Michael Addition Reaction of 2‐Hydroxybenzophenone Imines to Nitroolefins under Batch and Flow Conditions. Adv Synth Catal 2021. [DOI: 10.1002/adsc.202100635] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
| | - Miguel A. Valle‐Amores
- Organic Chemistry Department, Módulo 1 Universidad Autónoma de Madrid 28049 Madrid Spain
| | - Alberto Fraile
- Organic Chemistry Department, Módulo 1 Universidad Autónoma de Madrid 28049 Madrid Spain
- Institute for Advanced Research in Chemical Sciences (IAdChem) Universidad Autónoma de Madrid 28049 Madrid Spain
| | - José Alemán
- Organic Chemistry Department, Módulo 1 Universidad Autónoma de Madrid 28049 Madrid Spain
- Institute for Advanced Research in Chemical Sciences (IAdChem) Universidad Autónoma de Madrid 28049 Madrid Spain
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4
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Champetter P, Castillo-Aguilera O, Taillier C, Brière JF, Dalla V, Oudeyer S, Comesse S. N
-Alkoxyacrylamides in Domino Reactions: Catalytic and Stereoselective Access to δ-Lactams. European J Org Chem 2019. [DOI: 10.1002/ejoc.201901528] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
| | | | | | | | - Vincent Dalla
- Normandie Univ; UNILEHAVRE FR 3038 CNRS, URCOM; 76600 Le Havre France
| | - Sylvain Oudeyer
- UNIROUEN, INSA Rouen, CNRS, COBRA; Normandie Univ; 76000 Rouen France
| | - Sébastien Comesse
- Normandie Univ; UNILEHAVRE FR 3038 CNRS, URCOM; 76600 Le Havre France
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5
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Chan JMW, Tan JPK, Engler AC, Ke X, Gao S, Yang C, Sardon H, Yang YY, Hedrick JL. Organocatalytic Anticancer Drug Loading of Degradable Polymeric Mixed Micelles via a Biomimetic Mechanism. Macromolecules 2016. [DOI: 10.1021/acs.macromol.5b02784] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- Julian M. W. Chan
- IBM Almaden Research Center, 650 Harry Road, San Jose, California 95120, United States
| | - Jeremy P. K. Tan
- Institute of Bioengineering and Nanotechnology, 31 Biopolis Way, The Nanos, Singapore 138669, Singapore
| | - Amanda C. Engler
- IBM Almaden Research Center, 650 Harry Road, San Jose, California 95120, United States
| | - Xiyu Ke
- Institute of Bioengineering and Nanotechnology, 31 Biopolis Way, The Nanos, Singapore 138669, Singapore
| | - Shujun Gao
- Institute of Bioengineering and Nanotechnology, 31 Biopolis Way, The Nanos, Singapore 138669, Singapore
| | - Chuan Yang
- Institute of Bioengineering and Nanotechnology, 31 Biopolis Way, The Nanos, Singapore 138669, Singapore
| | - Haritz Sardon
- IBM Almaden Research Center, 650 Harry Road, San Jose, California 95120, United States
- POLYMAT, University of the Basque Country UPV/EHU Joxe Mari Korta Center, Avda. Tolosa
72, 20018 Donostia-San
Sebastián, Spain
| | - Yi Yan Yang
- Institute of Bioengineering and Nanotechnology, 31 Biopolis Way, The Nanos, Singapore 138669, Singapore
| | - James L. Hedrick
- IBM Almaden Research Center, 650 Harry Road, San Jose, California 95120, United States
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6
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Theoretical investigation on mechanism of asymmetric Michael addition of trans-1-nitro-2-phenylethylene to 2-methylpropionaldehyde catalyzed by a Cinchona alkaloid-derived primary amine. Struct Chem 2014. [DOI: 10.1007/s11224-014-0409-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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7
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Silvi M, Renzi P, Rosato D, Margarita C, Vecchioni A, Bordacchini I, Morra D, Nicolosi A, Cari R, Sciubba F, Scarpino Schietroma DM, Bella M. Enantioselective aza-Michael addition of imides by using an integrated strategy involving the synthesis of a family of multifunctional catalysts, usage of multiple catalysis, and rational design of experiment. Chemistry 2013; 19:9973-8. [PMID: 23765568 DOI: 10.1002/chem.201301493] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2013] [Indexed: 11/07/2022]
Abstract
A challenging asymmetric reaction (aza-Michael addition of imides to enones) has been optimized through an integrated approach involving the synthesis of a family of organocatalysts, multiple catalysis (usage of additives), and finally with rational exploration of the chemical space by the application of the experiment design.
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Affiliation(s)
- Mattia Silvi
- Department of Chemistry, Sapienza University of Roma, P.le Aldo Moro 5, 00185 Roma, Italy
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8
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Ban SR, Zhu XX, Zhang ZP, Xie HY, Li QS. Benzoylthiourea-Pyrrolidine as Another Bifunctional Organocatalyst: Highly Enantioselective Michael Addition of Cyclohexanone to Nitroolefins. European J Org Chem 2013. [DOI: 10.1002/ejoc.201300225] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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9
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Pou A, Moyano A. Stereoselective Organocatalytic Approach to α,β-Disubstituted-β-amino Acids: A Short Enantioselective Synthesis of Cispentacin. European J Org Chem 2013. [DOI: 10.1002/ejoc.201300197] [Citation(s) in RCA: 23] [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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10
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Asymmetric aza-Michael additions of 4-nitrophthalimide to nitroalkenes and preliminary study of the products for herbicidal activities. Tetrahedron 2013. [DOI: 10.1016/j.tet.2013.01.043] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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11
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Su Z, Lee HW, Kim CK. Asymmetric 1,4-Michael Addition Reactions Catalyzed by a Cinchona Alkaloid Derived Primary Amine: A Theoretical Investigation of the Reaction Mechanism and Enantioselectivity. European J Org Chem 2013. [DOI: 10.1002/ejoc.201201152] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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12
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Melchiorre P. Katalyse mit primären Cinchona-Aminen zur asymmetrischen Funktionalisierung von Carbonylverbindungen. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201109036] [Citation(s) in RCA: 111] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
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13
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Melchiorre P. Cinchona-based primary amine catalysis in the asymmetric functionalization of carbonyl compounds. Angew Chem Int Ed Engl 2012; 51:9748-70. [PMID: 22893602 DOI: 10.1002/anie.201109036] [Citation(s) in RCA: 362] [Impact Index Per Article: 30.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2011] [Indexed: 12/21/2022]
Abstract
Asymmetric aminocatalysis exploits the potential of chiral primary and secondary amines to catalyze asymmetric reactions. It has greatly simplified the functionalization of carbonyl compounds while ensuring high enantioselectivity. Recent advances in cinchona-based primary amine catalysis have provided new synthetic opportunities and conceptual perspectives for successfully attacking major challenges in carbonyl compound chemistry, which traditional approaches have not been able to address. This Review outlines the historical context for the development of this catalyst class while charting the landmark discoveries and applications that have further expanded the synthetic potential of aminocatalysis.
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Affiliation(s)
- Paolo Melchiorre
- ICREA-Institució Catalana de Recerca i Estudis Avançats, Passeig Lluís Companys 23, Barcelona, Spain.
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14
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Campbell NR, Sun B, Singh RP, Deng L. Cinchona alkaloid catalyzed enantioselective amination of α,β-unsaturated ketones: an asymmetric approach to Δ 2-pyrazolines. Adv Synth Catal 2011; 353:3123-3128. [PMID: 23807876 DOI: 10.1002/adsc.201100447] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Δ2-Pyrazolines are of significant medicinal and synthetic interest due to their therapeutic properties and utility in the synthesis of 1,3-diamines, yet few asymmetric methods exist to prepare them. An unprecedented highly enantioselective organocatalytic synthesis of 2-pyrazolines was achieved through an asymmetric conjugate addition catalyzed by 9-epi-amino cinchona alkaloids followed by deprotection-cyclization, which furnished chiral 2-pyrazolines in 46-78% yield and 59-91% ee. This bifunctional catalytic methodology thus provides easy access to considerable range of optically active 3,5-dialkyl 2-pyrazolines.
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Affiliation(s)
- Nathaniel R Campbell
- Department of Chemistry, Brandeis University, 415 South St., Waltham, MA 02454-9110, USA
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15
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Fustero S, del Pozo C, Mulet C, Lazaro R, Sánchez-Roselló M. Microwave-Assisted Organocatalytic Enantioselective Intramolecular aza-Michael Reaction with α,β-Unsaturated Ketones. Chemistry 2011; 17:14267-72. [DOI: 10.1002/chem.201101292] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2011] [Revised: 08/14/2011] [Indexed: 11/11/2022]
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16
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Ban SR, Xie HY, Zhu XX, Li QS. Highly Enantioselective Michael Addition of Ketones to Nitroolefins with a Pyrrolidine-Based Phthalimide as an Enamine-Type Organocatalyst. European J Org Chem 2011. [DOI: 10.1002/ejoc.201101093] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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17
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Liu JD, Chen YC, Zhang GB, Li ZQ, Chen P, Du JY, Tu YQ, Fan CA. Asymmetric Organocatalytic Intramolecular Aza-Michael Addition of Enone Carbamates: Catalytic Enantioselective Access to Functionalized 2-Substituted Piperidines. Adv Synth Catal 2011. [DOI: 10.1002/adsc.201100282] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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18
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Cai Q, Zheng C, Zhang JW, You SL. Enantioselective Michael/Mannich Polycyclization Cascade of Indolyl Enones Catalyzed by Quinine-Derived Primary Amines. Angew Chem Int Ed Engl 2011; 50:8665-9. [DOI: 10.1002/anie.201103937] [Citation(s) in RCA: 134] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2011] [Indexed: 01/03/2023]
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19
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Cai Q, Zheng C, Zhang JW, You SL. Enantioselective Michael/Mannich Polycyclization Cascade of Indolyl Enones Catalyzed by Quinine-Derived Primary Amines. Angew Chem Int Ed Engl 2011. [DOI: 10.1002/ange.201103937] [Citation(s) in RCA: 62] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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20
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Sun W, Hong L, Wang R. Facile Creation of 2‐Substituted Indolin‐3‐ones by Using Primary–Secondary Diamine Catalysts. Chemistry 2011; 17:6030-3. [DOI: 10.1002/chem.201100144] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2011] [Indexed: 11/06/2022]
Affiliation(s)
- Wangsheng Sun
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, State Key Laboratory of Applied Organic Chemistry and Institute of Biochemistry and Molecular Biology, Lanzhou University, Lanzhou, 730000 (P.R. China), Fax: (+86) 931‐891‐2567
| | - Liang Hong
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, State Key Laboratory of Applied Organic Chemistry and Institute of Biochemistry and Molecular Biology, Lanzhou University, Lanzhou, 730000 (P.R. China), Fax: (+86) 931‐891‐2567
| | - Rui Wang
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, State Key Laboratory of Applied Organic Chemistry and Institute of Biochemistry and Molecular Biology, Lanzhou University, Lanzhou, 730000 (P.R. China), Fax: (+86) 931‐891‐2567
- State Key Laboratory of Chiroscience and Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Kowloon (Hong Kong)
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21
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Wang J, Wang W, Liu X, Hou Z, Lin L, Feng X. Highly Enantioselective Direct Michael Addition of 1H-Benzotriazole to Chalcones Catalyzed by Sc(OTf)3/N,N′-Dioxide Complex. European J Org Chem 2011. [DOI: 10.1002/ejoc.201100021] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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22
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Qiao Z, Shafiq Z, Liu L, Yu ZB, Zheng QY, Wang D, Chen YJ. An organocatalytic, δ-regioselective, and highly enantioselective nucleophilic substitution of cyclic Morita-Baylis-Hillman alcohols with indoles. Angew Chem Int Ed Engl 2011; 49:7294-8. [PMID: 20799307 DOI: 10.1002/anie.201003131] [Citation(s) in RCA: 55] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Zhen Qiao
- Beijing National Laboratory for Molecular Science (BNLMS), CAS Key Laboratory for Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
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23
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Hamashima Y, Suzuki S, Tamura T, Somei H, Sodeoka M. Scope and Mechanism of Tandem Aza-Michael Reaction/Enantioselective Protonation Using a Pd-μ-Hydroxo Complex under Mild Conditions Buffered with Amine Salts. Chem Asian J 2010; 6:658-68. [DOI: 10.1002/asia.201000740] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2010] [Indexed: 11/07/2022]
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24
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Sun X, Yu F, Ye T, Liang X, Ye J. Catalytic asymmetric Michael reactions of α,β-unsaturated ketones with sulfonyl-containing nucleophiles: chiral synthesis of (R)-muscone and (S)-celery ketone. Chemistry 2010; 17:430-4. [PMID: 21207555 DOI: 10.1002/chem.201002418] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2010] [Indexed: 11/08/2022]
Affiliation(s)
- Xiaomin Sun
- Engineering Research Center of Pharmaceutical Process Chemistry, Ministry of Education, School of Pharmacy, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, PR China
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25
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Lykke L, Monge D, Nielsen M, Jørgensen KA. Asymmetric Organocatalytic Formal Aza-Michael Addition of Ammonia to Nitroalkenes. Chemistry 2010; 16:13330-4. [DOI: 10.1002/chem.201002415] [Citation(s) in RCA: 58] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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26
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Qiao Z, Shafiq Z, Liu L, Yu ZB, Zheng QY, Wang D, Chen YJ. An Organocatalytic, δ-Regioselective, and Highly Enantioselective Nucleophilic Substitution of Cyclic Morita-Baylis-Hillman Alcohols with Indoles. Angew Chem Int Ed Engl 2010. [DOI: 10.1002/ange.201003131] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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27
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He Z, Zhou Q, Wu L, Chen Y. Asymmetric Organocatalytic Tandem Reaction to Chiral Pyrimidinone Derivatives using Urea as Dinitrogen Source. Adv Synth Catal 2010. [DOI: 10.1002/adsc.201000291] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- Zhao‐Quan He
- Key Laboratory of Drug‐Targeting and Drug Delivery System of Education Ministry, Department of Medicinal Chemistry, West China School of Pharmacy, Sichuan University, Chengdu 610041, People's Republic of China, Fax: (+86)‐28‐8550‐2609; phone: (+86)‐28‐8550‐2609
| | - Quan Zhou
- Key Laboratory of Drug‐Targeting and Drug Delivery System of Education Ministry, Department of Medicinal Chemistry, West China School of Pharmacy, Sichuan University, Chengdu 610041, People's Republic of China, Fax: (+86)‐28‐8550‐2609; phone: (+86)‐28‐8550‐2609
| | - Li Wu
- Key Laboratory of Drug‐Targeting and Drug Delivery System of Education Ministry, Department of Medicinal Chemistry, West China School of Pharmacy, Sichuan University, Chengdu 610041, People's Republic of China, Fax: (+86)‐28‐8550‐2609; phone: (+86)‐28‐8550‐2609
| | - Ying‐Chun Chen
- Key Laboratory of Drug‐Targeting and Drug Delivery System of Education Ministry, Department of Medicinal Chemistry, West China School of Pharmacy, Sichuan University, Chengdu 610041, People's Republic of China, Fax: (+86)‐28‐8550‐2609; phone: (+86)‐28‐8550‐2609
- State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, People's Republic of China
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28
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Nielsen S, Smith G, Begtrup M, Kristensen J. Synthesis and Application of a New Fluorous-Tagged Ammonia Equivalent. Chemistry 2010; 16:4557-66. [DOI: 10.1002/chem.200903178] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2009] [Indexed: 11/11/2022]
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29
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Holub N, Jiang H, Paixão M, Tiberi C, Jørgensen K. An Unexpected Michael-Aldol-Smiles Rearrangement Sequence for the Synthesis of Versatile Optically Active Bicyclic Structures by Using Asymmetric Organocatalysis. Chemistry 2010; 16:4337-46. [DOI: 10.1002/chem.200903274] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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30
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Xu Z, Buechler T, Wheeler K, Wang H. A Three-Component Reaction Based on a Remote-Group-Directed Dynamic Kinetic Aza-Michael Addition: Stereoselective Synthesis of Imidazolidin-4-ones. Chemistry 2010; 16:2972-6. [DOI: 10.1002/chem.200903508] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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31
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Xie JW, Huang X, Fan LP, Xu DC, Li XS, Su H, Wen YH. Efficient Method for the Synthesis of Optically Active 2-Amino-2-chromene Derivatives via One-Pot Tandem Reactions. Adv Synth Catal 2009. [DOI: 10.1002/adsc.200900579] [Citation(s) in RCA: 84] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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32
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Xu X, Han X, Yang L, Hu W. Highly Diastereoselective Synthesis of Fully Substituted Tetrahydrofurans by a One-Pot Cascade Reaction of Aryldiazoacetates with Allyl Alcohols. Chemistry 2009; 15:12604-7. [DOI: 10.1002/chem.200902093] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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33
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34
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Paixão M, Holub N, Vila C, Nielsen M, Jørgensen K. Trends in Organocatalytic Conjugate Addition to Enones: An Efficient Approach to Optically Active Alkynyl, Alkenyl, and Ketone Products. Angew Chem Int Ed Engl 2009. [DOI: 10.1002/ange.200903790] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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35
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Paixão M, Holub N, Vila C, Nielsen M, Jørgensen K. Trends in Organocatalytic Conjugate Addition to Enones: An Efficient Approach to Optically Active Alkynyl, Alkenyl, and Ketone Products. Angew Chem Int Ed Engl 2009; 48:7338-42. [DOI: 10.1002/anie.200903790] [Citation(s) in RCA: 75] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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