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Lin X, Mu X, Cui H, Li Q, Feng Z, Liu Y, Li G, Li C. Diastereo-divergent synthesis of chiral hindered ethers via a synergistic calcium(II)/gold(I) catalyzed cascade hydration/1,4-addition reaction. Nat Commun 2024; 15:3683. [PMID: 38693101 PMCID: PMC11063041 DOI: 10.1038/s41467-024-47951-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2023] [Accepted: 04/17/2024] [Indexed: 05/03/2024] Open
Abstract
Hindered ethers are ubiquitous in natural products and bioactive molecules. However, developing an efficient method for the stereocontrolled synthesis of all stereoisomers of chiral hindered ethers is highly desirable but challenging. Here we show a strategy that utilizes in situ-generated water as a nucleophile in an asymmetric cascade reaction involving two highly reactive intermediates, 3-furyl methyl cations and ortho-quinone methides (o-QMs), to synthesize chiral hindered ethers. The Ca(II)/Au(I) synergistic catalytic system enables the control of diastereoselectivity and enantioselectivity by selecting suitable chiral phosphine ligands in this cascade hydration/1,4-addition reaction, affording all four stereoisomers of a diverse range of chiral tetra-aryl substituted ethers with high diastereoselectivities (up to >20/1) and enantioselectivities (up to 95% ee). This work provides an example of chiral Ca(II)/Au(I) bimetallic catalytic system controlling two stereogenic centers via a cascade reaction in a single operation.
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Affiliation(s)
- Xiangfeng Lin
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, PR China
- Key Laboratory of Biopesticide and Chemical Biology (Ministry of Education), College of Plant Protection, Fujian Agriculture and Forestry University, Fuzhou, 350002, PR China
| | - Xia Mu
- State key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Science, Dalian, 116023, PR China
| | - Hongqiang Cui
- State key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Science, Dalian, 116023, PR China
- University of Chinese Academy of Sciences, Beijing, 100039, PR China
| | - Qian Li
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, PR China
- University of Chinese Academy of Sciences, Beijing, 100039, PR China
| | - Zhaochi Feng
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, PR China
| | - Yan Liu
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, PR China.
| | - Guohui Li
- University of Chinese Academy of Sciences, Beijing, 100039, PR China.
| | - Can Li
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, PR China.
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2
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Wu Z, Krishnamurthy S, Satyanarayana Tummalapalli KS, Xu J, Yue C, Antilla JC. Enantioselective Amination of
β
‐Keto Esters Catalyzed by Chiral Calcium Phosphates. Chemistry 2022; 28:e202200907. [DOI: 10.1002/chem.202200907] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2022] [Indexed: 11/10/2022]
Affiliation(s)
- Zhenwei Wu
- School of Pharmaceutical Science and Technology Institute for Molecular Design and Synthesis Tianjin University Tianjin 300072 China
| | - Suvratha Krishnamurthy
- School of Pharmaceutical Science and Technology Institute for Molecular Design and Synthesis Tianjin University Tianjin 300072 China
| | - K. S. Satyanarayana Tummalapalli
- School of Pharmaceutical Science and Technology Institute for Molecular Design and Synthesis Tianjin University Tianjin 300072 China
| | - Jun Xu
- School of Pharmaceutical Science and Technology Institute for Molecular Design and Synthesis Tianjin University Tianjin 300072 China
| | - Caizhen Yue
- School of Science Zhejiang Sci-Tech University Hangzhou City Zhejiang Province 310018 China
| | - Jon C. Antilla
- School of Pharmaceutical Science and Technology Institute for Molecular Design and Synthesis Tianjin University Tianjin 300072 China
- School of Science Zhejiang Sci-Tech University Hangzhou City Zhejiang Province 310018 China
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3
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4
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Lai J, Reid JP. Interrogating the Thionium Hydrogen Bond as a Noncovalent Stereocontrolling Interaction in Chiral Phosphate Catalysis. Chem Sci 2022; 13:11065-11073. [PMID: 36320465 PMCID: PMC9516887 DOI: 10.1039/d2sc02171d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2022] [Accepted: 08/15/2022] [Indexed: 12/04/2022] Open
Abstract
CH⋯O bonds are a privileged noncovalent interaction determining the energies and geometries of a large number of structures. In catalytic settings, these are invoked as a decisive feature controlling many asymmetric transformations involving aldehydes. However, little is known about their stereochemical role when the interaction involves other substrate types. We report the results of computations that show for the first time thionium hydrogen bonds to be an important noncovalent interaction in asymmetric catalysis. As a validating case study, we explored an asymmetric Pummerer rearrangement involving thionium intermediates to yield enantioenriched N,S-acetals under BINOL-derived chiral phosphate catalysis. DFT and QM/MM hybrid calculations showed that the lowest energy pathway corresponded to a transition state involving two hydrogen bonding interactions from the thionium intermediate to the catalyst. However, the enantiomer resulting from this process differed from the originally published absolute configuration. Experimental determination of the absolute configuration resolved this conflict in favor of our calculations. The reaction features required for enantioselectivity were further interrogated by statistical modeling analysis that utilized bespoke featurization techniques to enable the translation of enantioselectivity trends from intermolecular reactions to those proceeding intramolecularly. Through this suite of computational modeling techniques, a new model is revealed that provides a different explanation for the product outcome and enabled reassignment of the absolute product configuration. Transferable selectivity profiles allow data from intermolecular reactions using iminium substrates to be applied to predict intramolecular reactions involving thioniums.![]()
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Affiliation(s)
- Junshan Lai
- Department of Chemistry, University of British Columbia 2036 Main Mall Vancouver British Columbia V6T 1Z1 Canada
| | - Jolene P Reid
- Department of Chemistry, University of British Columbia 2036 Main Mall Vancouver British Columbia V6T 1Z1 Canada
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5
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Silver-catalyzed unstrained C(CO)-alkyl bond scission via [3+2]/retro-[3+2] cycloaddition of ketones with N-isocyanoiminotriphenylphosphorane. Sci China Chem 2021. [DOI: 10.1007/s11426-021-1000-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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6
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Shoja A, Reid JP. Computational Insights into Privileged Stereocontrolling Interactions Involving Chiral Phosphates and Iminium Intermediates. J Am Chem Soc 2021; 143:7209-7215. [PMID: 33914528 DOI: 10.1021/jacs.1c03829] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
The precise design of a catalyst for a given reaction is extremely difficult, often requiring a significant empirical screening campaign to afford products in high yields and enantiomeric excess. Design becomes even more challenging if one requires a catalyst that performs well for a diverse range of substrates. Such "privileged" catalysts exist, but little is known why they operate so generally. We report the results of computations which show that when substrate and catalyst features are conserved between significantly different mechanistic regimes, similar modes of activation can be invoked. As a validating case study, we explored a Hantzsch ester hydrogenation of α,β-unsaturated iminiums involving BINOL-derived chiral phosphates and find they impart asymmetric induction in an analogous fashion to their acid counterpart. Specifically, DFT calculations at the IEFPCM(1,4-dioxane)-B3LYP/6-311+G(d,p)//B3LYP/6-31G(d) level predicted enantioselectivity to be close to the experimental value (82% ee calculated, 96% ee experimental) and showed that the reaction proceeds via a transition state involving two hydrogen-bonding interactions from the iminium intermediate and nucleophile to the catalyst. These interactions lower the energy of the transition structure and provide extra rigidity to the system. This new model invokes "privileged" noncovalent interactions and leads to a new explanation for the enantioselectivity outcome, ultimately providing the basis for the development of general catalyst design principles and the translation of mechanistically disparate reaction profiles for the prediction of enantioselectivity outcomes using statistical models.
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Affiliation(s)
- Ali Shoja
- Department of Chemistry, University of British Columbia, 2036 Main Mall, Vancouver, British Columbia V6T 1Z1, Canada
| | - Jolene P Reid
- Department of Chemistry, University of British Columbia, 2036 Main Mall, Vancouver, British Columbia V6T 1Z1, Canada
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7
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Ogino E, Nakamura A, Kuwano S, Arai T. Chiral C2-Symmetric Aminomethylbinaphthol as Synergistic Catalyst for Asymmetric Epoxidation of Alkylidenemalononitriles: Easy Access to Chiral Spirooxindoles. Org Lett 2021; 23:1980-1985. [DOI: 10.1021/acs.orglett.0c04245] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Eri Ogino
- Soft Molecular Activation Research Center (SMARC), Chiba Iodine Resource Innovation Center (CIRIC), Synthetic Organic Chemistry, Department of Chemistry, Graduate School of Science, Chiba University, 1-33 Yayoi, Inage, Chiba 263-8522, Japan
| | - Ayu Nakamura
- Soft Molecular Activation Research Center (SMARC), Chiba Iodine Resource Innovation Center (CIRIC), Synthetic Organic Chemistry, Department of Chemistry, Graduate School of Science, Chiba University, 1-33 Yayoi, Inage, Chiba 263-8522, Japan
| | - Satoru Kuwano
- Soft Molecular Activation Research Center (SMARC), Chiba Iodine Resource Innovation Center (CIRIC), Synthetic Organic Chemistry, Department of Chemistry, Graduate School of Science, Chiba University, 1-33 Yayoi, Inage, Chiba 263-8522, Japan
| | - Takayoshi Arai
- Soft Molecular Activation Research Center (SMARC), Chiba Iodine Resource Innovation Center (CIRIC), Synthetic Organic Chemistry, Department of Chemistry, Graduate School of Science, Chiba University, 1-33 Yayoi, Inage, Chiba 263-8522, Japan
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8
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Abstract
Over the last 16 years, chiral phosphoric acids (CPAs) have been shown to be excellent asymmetric catalysts, very effectively used in constructing chiral molecules with high enantiocontrol. In 2010, Ishihara et al. discovered that chiral metal phosphate complexes (or salts) could be found in substantial quantities, as contaminates, in some reported CPA-catalyzed reactions (Hatano, M.; Moriyama, K.; Maki, T.; Ishihara, K. Angew. Chem., Int. Ed. 2010, 49, 3823-3826). These metal phosphates were shown to actually catalyze the reactions in addition to CPAs. In this work, we have investigated in depth a reaction first reported to be catalyzed by CPAs based on a vaulted bis-phenanthrol (VAPOL) backbone. We have found that VAPOL metal phosphates were, in fact, superior catalysts for this reaction. Upon optimization, a wide substrate scope, low catalyst loading, and mild conditions could provide intermolecular imine amidation reactions producing chiral N,N'-aminal products in high yields and with excellent ee values (up to >99% yield, >99% ee).
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Affiliation(s)
- Rui Cao
- School of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, P. R. China
| | - Jon C Antilla
- School of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, P. R. China.,School of Sciences, Zhejiang Sci-Tech University, Hangzhou 310018, P. R. China
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9
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Miró J, Gensch T, Ellwart M, Han SJ, Lin HH, Sigman MS, Toste FD. Enantioselective Allenoate-Claisen Rearrangement Using Chiral Phosphate Catalysts. J Am Chem Soc 2020; 142:6390-6399. [PMID: 32182422 DOI: 10.1021/jacs.0c01637] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Herein we report the first highly enantioselective allenoate-Claisen rearrangement using doubly axially chiral phosphate sodium salts as catalysts. This synthetic method provides access to β-amino acid derivatives with vicinal stereocenters in up to 95% ee. We also investigated the mechanism of enantioinduction by transition state (TS) computations with DFT as well as statistical modeling of the relationship between selectivity and the molecular features of both the catalyst and substrate. The mutual interactions of charge-separated regions in both the zwitterionic intermediate generated by reaction of an amine to the allenoate and the Na+-salt of the chiral phosphate leads to an orientation of the TS in the catalytic pocket that maximizes favorable noncovalent interactions. Crucial arene-arene interactions at the periphery of the catalyst lead to a differentiation of the TS diastereomers. These interactions were interrogated using DFT calculations and validated through statistical modeling of parameters describing noncovalent interactions.
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Affiliation(s)
- Javier Miró
- Department of Chemistry, University of California, Berkeley, California 94720, United States
| | - Tobias Gensch
- Department of Chemistry, University of Utah, 315 South 1400 East, Salt Lake City, Utah 84112, United States
| | - Mario Ellwart
- Department of Chemistry, University of California, Berkeley, California 94720, United States
| | - Seo-Jung Han
- Department of Chemistry, University of California, Berkeley, California 94720, United States.,Chemical Kinomics Research Center and Division of Bio-Medical Science & Technology, Korea Institute of Science and Technology (KIST), Seoul 02792, Republic of Korea
| | - Hsin-Hui Lin
- Department of Chemistry, University of California, Berkeley, California 94720, United States
| | - Matthew S Sigman
- Department of Chemistry, University of Utah, 315 South 1400 East, Salt Lake City, Utah 84112, United States
| | - F Dean Toste
- Department of Chemistry, University of California, Berkeley, California 94720, United States
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10
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Ibáñez I, Kaneko M, Kamei Y, Tsutsumi R, Yamanaka M, Akiyama T. Enantioselective Friedel–Crafts Alkylation Reaction of Indoles with α-Trifluoromethylated β-Nitrostyrenes Catalyzed by Chiral BINOL Metal Phosphate. ACS Catal 2019. [DOI: 10.1021/acscatal.9b01811] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Ignacio Ibáñez
- Department of Chemistry, Faculty of Science, Gakushuin University, 1-5-1 Mejiro, Toshima-ku, Tokyo 171-8588, Japan
| | - Mio Kaneko
- Department of Chemistry, Faculty of Science, Gakushuin University, 1-5-1 Mejiro, Toshima-ku, Tokyo 171-8588, Japan
| | - Yuto Kamei
- Department of Chemistry, Faculty of Science, Rikkyo University, 3-41-1 Nishi-Ikebukuro, Toshima-ku, Tokyo 171-8501, Japan
| | - Ryosuke Tsutsumi
- Department of Chemistry, Faculty of Science, Rikkyo University, 3-41-1 Nishi-Ikebukuro, Toshima-ku, Tokyo 171-8501, Japan
| | - Masahiro Yamanaka
- Department of Chemistry, Faculty of Science, Rikkyo University, 3-41-1 Nishi-Ikebukuro, Toshima-ku, Tokyo 171-8501, Japan
| | - Takahiko Akiyama
- Department of Chemistry, Faculty of Science, Gakushuin University, 1-5-1 Mejiro, Toshima-ku, Tokyo 171-8588, Japan
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11
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Zhu L, Mohamed H, Yuan H, Zhang J. The control effects of different scaffolds in chiral phosphoric acids: a case study of enantioselective asymmetric arylation. Catal Sci Technol 2019. [DOI: 10.1039/c9cy01420a] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
DFT calculations disclosed that the sign of enantioselectivity in chiral-phosphoric-acid catalyzed reactions can be tuned by BINOL- or SPINOL-derived backbones.
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Affiliation(s)
- Lihan Zhu
- Faculty of Chemistry
- Northeast Normal University
- Changchun
- P. R. China
| | - Hend Mohamed
- Faculty of Chemistry
- Northeast Normal University
- Changchun
- P. R. China
| | - Haiyan Yuan
- Faculty of Chemistry
- Northeast Normal University
- Changchun
- P. R. China
| | - Jingping Zhang
- Faculty of Chemistry
- Northeast Normal University
- Changchun
- P. R. China
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12
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Ascough DMH, Duarte F, Paton RS. Stereospecific 1,3-H Transfer of Indenols Proceeds via Persistent Ion-Pairs Anchored by NH···π Interactions. J Am Chem Soc 2018; 140:16740-16748. [PMID: 30338998 DOI: 10.1021/jacs.8b09874] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
The base-catalyzed rearrangement of arylindenols is a rare example of a suprafacial [1,3]-hydrogen atom transfer. The mechanism has been proposed to proceed via sequential [1,5]-sigmatropic shifts, which occur in a selective sense and avoid an achiral intermediate. A computational analysis using quantum chemistry casts serious doubt on these suggestions: These pathways have enormous activation barriers, and in constrast to what is observed experimentally, they overwhelmingly favor a racemic product. Instead we propose that a suprafacial [1,3]-prototopic shift occurs in a two-step deprotonation/reprotonation sequence. This mechanism is favored by 15 kcal mol-1 over that previously proposed. Most importantly, this is also consistent with stereospecificity since reprotonation occurs rapidly on the same π-face. We have used explicitly solvated molecular dynamics studies to study the persistence and condensed-phase dynamics of the intermediate ion-pair formed in this reaction. Chirality transfer is the result of a particularly resilient contact ion-pair, held together by electrostatic attraction and a critical NH···π interaction which ensures that this species has an appreciable lifetime even in polar solvents such as DMSO and MeOH.
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Affiliation(s)
- David M H Ascough
- Chemistry Research Laboratory , University of Oxford , 12 Mansfield Road , Oxford OX1 3TA , United Kingdom
| | - Fernanda Duarte
- Chemistry Research Laboratory , University of Oxford , 12 Mansfield Road , Oxford OX1 3TA , United Kingdom
| | - Robert S Paton
- Department of Chemistry , Colorado State University , Fort Collins , Colorado 80523 , United States.,Chemistry Research Laboratory , University of Oxford , 12 Mansfield Road , Oxford OX1 3TA , United Kingdom
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13
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Hodík T, Schneider C. A Highly Enantio‐ and Diastereoselective Synthesis of Spirocyclic Dihydroquinolones via Domino Michael Addition‐Lactamization of
ortho
‐Quinone Methide Imines. Chemistry 2018; 24:18082-18088. [DOI: 10.1002/chem.201803886] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2018] [Indexed: 12/11/2022]
Affiliation(s)
- Tomáš Hodík
- Institut für Organische ChemieUniversität Leipzig Johannisallee 29 04103 Leipzig Germany
| | - Christoph Schneider
- Institut für Organische ChemieUniversität Leipzig Johannisallee 29 04103 Leipzig Germany
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14
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Comparing quantitative prediction methods for the discovery of small-molecule chiral catalysts. Nat Rev Chem 2018. [DOI: 10.1038/s41570-018-0040-8] [Citation(s) in RCA: 82] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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15
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Gualandi A, Rodeghiero G, Cozzi PG. Catalytic Stereoselective SN
1-Type Reactions Promoted by Chiral Phosphoric Acids as Brønsted Acid Catalysts. ASIAN J ORG CHEM 2018. [DOI: 10.1002/ajoc.201800359] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Andrea Gualandi
- Dipartimento di Chimica “G. Ciamician”; ALMA MATER STUDIORUM Università di Bologna; Via Selmi 2 40126 Bologna Italy
| | - Giacomo Rodeghiero
- Dipartimento di Chimica “G. Ciamician”; ALMA MATER STUDIORUM Università di Bologna; Via Selmi 2 40126 Bologna Italy
- Cyanagen Srl; Via Stradelli Guelfi 40/C 40138 Bologna Italy
| | - Pier Giorgio Cozzi
- Dipartimento di Chimica “G. Ciamician”; ALMA MATER STUDIORUM Università di Bologna; Via Selmi 2 40126 Bologna Italy
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16
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Shu S, Liu Z, Li Y, Ke Z, Liu Y. Diastereoselectivity in a cyclic secondary amine catalyzed asymmetric Mannich reaction: a model rationalization from DFT studies. Org Chem Front 2018. [DOI: 10.1039/c8qo00424b] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
DFT studies revealed the detailed structure stereoselectivity relationship for cyclic secondary amine catalyzed asymmetric Mannich reactions.
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Affiliation(s)
- Siwei Shu
- School of Chemical Engineering and Light Industry
- Guangdong University of Technology
- Higher Education Mega Center
- Guangzhou 510006
- P. R. China
| | - Zhao Liu
- School of Chemistry
- School of Materials Science & Engineering
- PCFM Lab
- Sun Yat-sen University
- Guangzhou 510275
| | - Yukui Li
- School of Chemistry
- School of Materials Science & Engineering
- PCFM Lab
- Sun Yat-sen University
- Guangzhou 510275
| | - Zhuofeng Ke
- School of Chemistry
- School of Materials Science & Engineering
- PCFM Lab
- Sun Yat-sen University
- Guangzhou 510275
| | - Yan Liu
- School of Chemical Engineering and Light Industry
- Guangdong University of Technology
- Higher Education Mega Center
- Guangzhou 510006
- P. R. China
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