151
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Parmar D, Sugiono E, Raja S, Rueping M. Complete field guide to asymmetric BINOL-phosphate derived Brønsted acid and metal catalysis: history and classification by mode of activation; Brønsted acidity, hydrogen bonding, ion pairing, and metal phosphates. Chem Rev 2014; 114:9047-153. [PMID: 25203602 DOI: 10.1021/cr5001496] [Citation(s) in RCA: 1503] [Impact Index Per Article: 150.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Dixit Parmar
- Institute of Organic Chemistry, RWTH Aachen University , Landoltweg 1, 52074 Aachen, Germany
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152
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Guevara-Pulido JO, Andrés JM, Pedrosa R. One-Pot Sequential Organocatalytic Michael–Tishchenko–Lactonization Reactions. Synthesis of Enantioenriched 4,5,6-Trisubstituted δ-Lactones. J Org Chem 2014; 79:8638-44. [DOI: 10.1021/jo5013724] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- James O. Guevara-Pulido
- Instituto CINQUIMA and Departamento
de Química Orgánica, Facultad de Ciencias, Universidad de Valladolid, Paseo de Belén 7, 47011 Valladolid, Spain
| | - José M. Andrés
- Instituto CINQUIMA and Departamento
de Química Orgánica, Facultad de Ciencias, Universidad de Valladolid, Paseo de Belén 7, 47011 Valladolid, Spain
| | - Rafael Pedrosa
- Instituto CINQUIMA and Departamento
de Química Orgánica, Facultad de Ciencias, Universidad de Valladolid, Paseo de Belén 7, 47011 Valladolid, Spain
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153
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Hong M, Chen EYX. Proton-Transfer Polymerization (HTP): Converting Methacrylates to Polyesters by an N-Heterocyclic Carbene. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201406630] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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154
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Hong M, Chen EYX. Proton-Transfer Polymerization (HTP): Converting Methacrylates to Polyesters by an N-Heterocyclic Carbene. Angew Chem Int Ed Engl 2014; 53:11900-6. [DOI: 10.1002/anie.201406630] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2014] [Revised: 08/13/2014] [Indexed: 01/21/2023]
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155
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156
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Chauhan P, Mahajan S, Enders D. Organocatalytic carbon-sulfur bond-forming reactions. Chem Rev 2014; 114:8807-64. [PMID: 25144663 DOI: 10.1021/cr500235v] [Citation(s) in RCA: 454] [Impact Index Per Article: 45.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Pankaj Chauhan
- Institute of Organic Chemistry, RWTH Aachen University Landoltweg 1 , 52074 Aachen, Germany
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157
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Zhang XN, Chen GQ, Tang XY, Wei Y, Shi M. Phosphine-Catalyzed Annulations of 4,4-Dicyano-2-Methylenebut-3-enoates with Maleimides and Maleic Anhydride. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201406100] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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158
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Lombardo M, Cerisoli L, Manoni E, Montroni E, Quintavalla A, Trombini C. Properties and Reactivity of Conformationally Constrained Bicyclic Diarylprolinol Silyl Ethers as Organocatalysts. European J Org Chem 2014. [DOI: 10.1002/ejoc.201402732] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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159
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Zhang XN, Chen GQ, Tang XY, Wei Y, Shi M. Phosphine-Catalyzed Annulations of 4,4-Dicyano-2-Methylenebut-3-enoates with Maleimides and Maleic Anhydride. Angew Chem Int Ed Engl 2014; 53:10768-73. [DOI: 10.1002/anie.201406100] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2014] [Revised: 07/12/2014] [Indexed: 12/14/2022]
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160
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Zhang LD, Zhou TT, Qi SX, Xi J, Yang XL, Yao ZJ. Total Syntheses of Lycoposerramine-V and 5-epi-Lycoposerramine-V. Chem Asian J 2014; 9:2740-4. [DOI: 10.1002/asia.201402614] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2014] [Indexed: 01/30/2023]
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161
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Lu H, Lin JB, Liu JY, Xu PF. One-Pot Asymmetric Synthesis of Quaternary Pyrroloindolones through a Multicatalytic N-Allylation/Hydroacylation Sequence. Chemistry 2014; 20:11659-63. [DOI: 10.1002/chem.201402947] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2014] [Indexed: 12/17/2022]
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162
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Hirashima SI, Sakai T, Nakashima K, Watanabe N, Koseki Y, Mukai K, Kanada Y, Tada N, Itoh A, Miura T. Solvent-free asymmetric conjugate addition of malonates to enones using a diaminomethylenemalononitrile organocatalyst. Tetrahedron Lett 2014. [DOI: 10.1016/j.tetlet.2014.05.100] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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163
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Joie C, Deckers K, Raabe G, Enders D. An Asymmetric Organocatalytic Quadruple Cascade to Tetraaryl-Substituted 2-Azabicyclo[3.3.0]octadienones. SYNTHESIS-STUTTGART 2014; 46:1539-1546. [PMID: 25278633 PMCID: PMC4178286 DOI: 10.1055/s-0033-1340982] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
A new asymmetric organocatalytic three-component quadruple cascade of α-ketoamides with α,β-unsaturated aldehydes is described. The reaction is catalyzed by the (S)-diphenylprolinol TMS ether catalyst and proceeds via an aza-Michael/aldol condensation/vinylogous Michael/aldol condensation sequence to yield tetraaryl-substituted 2-azabicyclo[3.3.0]octadienone derivatives. The cascade products are obtained with good to very good yields (34-71%), virtually complete diastereoselectivities (>20:1), and very good enantioselectivities (84-97%).
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Affiliation(s)
- Céline Joie
- Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52074 Aachen, Germany
| | - Kristina Deckers
- Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52074 Aachen, Germany
| | - Gerhard Raabe
- Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52074 Aachen, Germany
| | - Dieter Enders
- Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52074 Aachen, Germany
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164
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Diosdado S, López R, Palomo C. Ureidopeptide‐Based Brønsted Bases: Design, Synthesis and Application to the Catalytic Enantioselective Synthesis of β‐Amino Nitriles from (Arylsulfonyl)acetonitriles. Chemistry 2014; 20:6526-31. [DOI: 10.1002/chem.201304877] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2013] [Revised: 02/19/2014] [Indexed: 12/11/2022]
Affiliation(s)
- Saioa Diosdado
- Departamento de Química Orgánica I, Facultad de Química, Universidad del País Vasco, Apdo. 1072, 20080 San Sebastián (Spain)
| | - Rosa López
- Departamento de Química Orgánica I, Facultad de Química, Universidad del País Vasco, Apdo. 1072, 20080 San Sebastián (Spain)
| | - Claudio Palomo
- Departamento de Química Orgánica I, Facultad de Química, Universidad del País Vasco, Apdo. 1072, 20080 San Sebastián (Spain)
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165
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Dong X, Sun J. Catalytic Asymmetric α-Aldol Reaction of Vinylogous N-Heterocyclic Carbene Enolates: Formation of Quaternary and Labile Tertiary Stereocenters. Org Lett 2014; 16:2450-3. [DOI: 10.1021/ol500830a] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Xiuqin Dong
- Department
of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong SAR, China
| | - Jianwei Sun
- Department
of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong SAR, China
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166
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Weise CF, Lauridsen VH, Rambo RS, Iversen EH, Olsen ML, Jørgensen KA. Organocatalytic access to enantioenriched dihydropyran phosphonates via an inverse-electron-demand hetero-Diels-Alder reaction. J Org Chem 2014; 79:3537-46. [PMID: 24673394 DOI: 10.1021/jo500347a] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
The enantioselective inverse-electron-demand hetero-Diels-Alder reaction of the remote olefin functionality in dienamines has been developed by the simultaneous activation of α,β-unsaturated aldehydes and acyl phosphonates. The dual activation is based on an organocatalyst that activates both the α,β-unsaturated aldehyde, through dienamine formation, and the acyl phosphonate by hydrogen-bonding. The enantioselective reaction results in the formation of dihydropyran frameworks with three contiguous stereogenic centers. Different substitution patterns are possible for both the heterodiene and the dienophile, and the target products are obtained in good yields and up to 92% ee. The potential of the reaction is demonstrated by transformation of the products into valuable and complex synthons.
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Affiliation(s)
- Christian F Weise
- Center for Catalysis, Department of Chemistry, Aarhus University , DK-8000 Aarhus C, Denmark
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167
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Organocatalysis: Key Trends in Green Synthetic Chemistry, Challenges, Scope towards Heterogenization, and Importance from Research and Industrial Point of View. ACTA ACUST UNITED AC 2014. [DOI: 10.1155/2014/402860] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
This paper purports to review catalysis, particularly the organocatalysis and its origin, key trends, challenges, examples, scope, and importance. The definition of organocatalyst corresponds to a low molecular weight organic molecule which in stoichiometric amounts catalyzes a chemical reaction. In this review, the use of the term heterogenized organocatalyst will be exclusively confined to a catalytic system containing an organic molecule immobilized onto some sort of support material and is responsible for accelerating a chemical reaction. Firstly, a brief description of the field is provided putting it in a green and sustainable perspective of chemistry. Next, research findings on the use of organocatalysts on various inorganic supports including nano(porous)materials, nanoparticles, silica, and zeolite/zeolitic materials are scrutinized in brief. Then future scope, research directions, and academic and industrial applications will be outlined. A succinct account will summarize some of the research and developments in the field. This review tries to bring many outstanding researches together and shows the vitality of the organocatalysis through several aspects.
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168
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Joie C, Deckers K, Enders D. Organocatalytic Asymmetric Synthesis of Functionalized 1,3,5-Triarylpyrrolidin-2-ones via an Aza-Michael/Aldol Domino Reaction. SYNTHESIS-STUTTGART 2014; 46:799-808. [PMID: 25278634 PMCID: PMC4178285 DOI: 10.1055/s-0033-1340565] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
The organocatalytic asymmetric synthesis of functionalized 1,3,5-triarylpyrrolidin-2-ones bearing three contiguous stereocenters through an aza-Michael/aldol domino reaction of α-ketoamides with α,β-unsaturated aldehydes is described. The domino products were further derivatized by aldehyde olefination under one-pot conditions. The reaction proceeds with excellent diastereoselectivities (>20:1) and good to excellent enantioselectivities (60-96% ee).
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Affiliation(s)
- Céline Joie
- Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52074 Aachen, Germany
| | - Kristina Deckers
- Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52074 Aachen, Germany
| | - Dieter Enders
- Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52074 Aachen, Germany
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169
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Halskov KS, Donslund BS, Barfüsser S, Jørgensen KA. Organocatalytic asymmetric formation of steroids. Angew Chem Int Ed Engl 2014; 53:4137-41. [PMID: 24554381 DOI: 10.1002/anie.201400203] [Citation(s) in RCA: 59] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2014] [Indexed: 11/11/2022]
Abstract
A novel and simple one-step approach for the construction of optically active steroids in a highly stereoselective manner by using organocatalysis is presented. The reaction of (di)enals with cyclic dienophiles in the presence of a TMS-protected prolinol catalyst leads to the construction of important 14 β-steroids. This new reaction allows an easy access to optically active steroids with a variety of substituents in the A ring in high yields and up to greater than 99 % ee. The reaction has been extended to include the construction of B- and D-homosteroids as well as steroids containing heteroatoms in the B ring. The angular substituent at C13 can be varied and alkyl, ester, and sulfone functionalities are introduced with excellent stereoselectivities. Simple synthetic procedures provide access to a range of naturally occurring steroids such as estrone and related analogues.
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Affiliation(s)
- Kim Søholm Halskov
- Center for Catalysis, Department of Chemistry, Aarhus University, Langelandsgade 140, 8000 Aarhus C (Denmark)
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170
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Halskov KS, Donslund BS, Barfüsser S, Jørgensen KA. Organocatalytic Asymmetric Formation of Steroids. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201400203] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
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171
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Urbanietz G, Atodiresei I, Enders D. Asymmetric Synthesis of Functionalized Dihydro- and Tetrahydropyrans via an Organocatalytic Domino Michael-Hemiacetalization Reaction. SYNTHESIS-STUTTGART 2014; 46:1261-1269. [PMID: 25284900 DOI: 10.1055/s-0033-1340826] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Starting from α-hydroxymethyl nitroalkenes and various 1,3-dicarbonyl compounds, a one-pot organocatalyzed diastereo- and enantioselective synthesis of polyfunctionalized dihydro- and tetrahydropyran derivatives via a domino Michael-hemiacetalization sequence is reported. The title compounds bearing a variety of functional groups can be synthesized in this way in good yields (59-91%) and with moderate to excellent diastereoselectivities (26-98% de) and enantioselectivities (71-99% ee).
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Affiliation(s)
- Gregor Urbanietz
- Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52074 Aachen, Germany
| | - Iuliana Atodiresei
- Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52074 Aachen, Germany
| | - Dieter Enders
- Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52074 Aachen, Germany
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172
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Xue XS, Yang C, Li X, Cheng JP. Computational Study on the pKa Shifts in Proline Induced by Hydrogen-Bond-Donating Cocatalysts. J Org Chem 2014; 79:1166-73. [DOI: 10.1021/jo402605n] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Xiao-Song Xue
- State Key Laboratory of Elemento-Organic
Chemistry, Collaborative Innovation Center of Chemical Science and
Engineering, Department of Chemistry, Nankai University, Tianjin 300071, China
| | - Chen Yang
- State Key Laboratory of Elemento-Organic
Chemistry, Collaborative Innovation Center of Chemical Science and
Engineering, Department of Chemistry, Nankai University, Tianjin 300071, China
| | - Xin Li
- State Key Laboratory of Elemento-Organic
Chemistry, Collaborative Innovation Center of Chemical Science and
Engineering, Department of Chemistry, Nankai University, Tianjin 300071, China
| | - Jin-Pei Cheng
- State Key Laboratory of Elemento-Organic
Chemistry, Collaborative Innovation Center of Chemical Science and
Engineering, Department of Chemistry, Nankai University, Tianjin 300071, China
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173
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Radivojevic J, Minovska G, Senerovic L, O'Connor K, Jovanovic P, Savic V, Tokic-Vujosevic Z, Nikodinovic-Runic J, Maslak V. Synthesis of γ-nitroaldehydes containing quaternary carbon in the α-position using a 4-oxalocrotonate tautomerase whole-cell biocatalyst. RSC Adv 2014. [DOI: 10.1039/c4ra05517a] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Synthetically valuable quaternary carbon containing γ-nitroaldehydes were obtained from branched chain aldehydes and a range of α,β-unsaturated nitroalkenes by a whole-cell biocatalytic reaction using 4-oxalocrotonate tautomerase as catalyst.
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Affiliation(s)
- Jelena Radivojevic
- Faculty of Chemistry
- University of Belgrade
- 11000 Belgrade, Serbia
- Institute of Molecular Genetics and Genetic Engineering
- University of Belgrade
| | - Gordana Minovska
- Institute of Molecular Genetics and Genetic Engineering
- University of Belgrade
- 11010 Belgrade, Serbia
| | - Lidija Senerovic
- Institute of Molecular Genetics and Genetic Engineering
- University of Belgrade
- 11010 Belgrade, Serbia
| | - Kevin O'Connor
- School of Biomolecular and Biomedical Sciences
- Centre for Synthesis and Chemical Biology
- University College Dublin
- Dublin 4, Ireland
| | - Predrag Jovanovic
- Department of Organic Chemistry
- Faculty of Pharmacy
- University of Belgrade
- 11221 Belgrade, Serbia
| | - Vladimir Savic
- Department of Organic Chemistry
- Faculty of Pharmacy
- University of Belgrade
- 11221 Belgrade, Serbia
| | - Zorana Tokic-Vujosevic
- Department of Organic Chemistry
- Faculty of Pharmacy
- University of Belgrade
- 11221 Belgrade, Serbia
| | | | - Veselin Maslak
- Faculty of Chemistry
- University of Belgrade
- 11000 Belgrade, Serbia
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174
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Bhowmick S, Kunte SS, Bhowmick KC. The smallest organocatalyst in highly enantioselective direct aldol reaction in wet solvent-free conditions. RSC Adv 2014. [DOI: 10.1039/c4ra02690j] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The catalytic efficacy of the smallest organocatalyst, l-proline hydrazide, prepared from a cheaply available natural amino acid, such as l-proline, was studied for the direct asymmetric aldol reaction of various ketones with aromatic aldehydes at room temperature in the presence of several acid additives.
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Affiliation(s)
- Sudipto Bhowmick
- Division of Organic Synthesis
- Department of Chemistry
- Visva-Bharati University
- Bolpur, India
| | - Sunita S. Kunte
- Division of Organic Chemistry
- Analytical Section
- National Chemical Laboratory
- Pune-411 008, India
| | - Kartick C. Bhowmick
- Division of Organic Synthesis
- Department of Chemistry
- Visva-Bharati University
- Bolpur, India
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175
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Chandrasekhar S, Kumar CP, Kumar TP, Haribabu K, Jagadeesh B, Lakshmi JK, Mainkar PS. Peptidomimetic organocatalysts: efficient Michael addition of ketones onto nitroolefins with very low catalyst loading. RSC Adv 2014. [DOI: 10.1039/c4ra04165h] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
The syntheses and applications of peptidomimetic triazole-based catalysts are described as efficient organocatalysts in Michael reaction with low loading.
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Affiliation(s)
- Srivari Chandrasekhar
- Division of Natural Products Chemistry
- CSIR-Indian Institute of Chemical Technology
- Hyderabad, India
| | | | - Togapur Pavan Kumar
- Division of Natural Products Chemistry
- CSIR-Indian Institute of Chemical Technology
- Hyderabad, India
| | - Kothapalli Haribabu
- Division of Natural Products Chemistry
- CSIR-Indian Institute of Chemical Technology
- Hyderabad, India
| | - Bharatam Jagadeesh
- Centre for NMR and Structural Chemistry
- CSIR-Indian Institute of Chemical Technology
- Hyderabad, India
| | - Jerripothula K. Lakshmi
- Centre for NMR and Structural Chemistry
- CSIR-Indian Institute of Chemical Technology
- Hyderabad, India
| | - Prathama S. Mainkar
- Division of Natural Products Chemistry
- CSIR-Indian Institute of Chemical Technology
- Hyderabad, India
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176
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Aasheim JH, Fliegl H, Uggerud E, Bonge-Hansen T, Eisenstein O. Stereoselectivity through a network of non-classical CH weak interactions: a prospective study of a bicyclic organocatalytic scaffold. NEW J CHEM 2014. [DOI: 10.1039/c4nj01460j] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
The preferred stereoisomeric product of this catalytic Diels–Alder reaction is in part determined by noncovalent CH⋯π interactions.
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Affiliation(s)
| | - Heike Fliegl
- Centre for Theoretical and Computational Chemistry (CTCC)
- Department of Chemistry
- University of Oslo
- Blindern, Norway
| | - Einar Uggerud
- Centre for Theoretical and Computational Chemistry (CTCC)
- Department of Chemistry
- University of Oslo
- Blindern, Norway
| | | | - Odile Eisenstein
- Centre for Theoretical and Computational Chemistry (CTCC)
- Department of Chemistry
- University of Oslo
- Blindern, Norway
- Institut Charles Gerhardt
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