1
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Foubelo F, Nájera C, Retamosa MG, Sansano JM, Yus M. Catalytic asymmetric synthesis of 1,2-diamines. Chem Soc Rev 2024; 53:7983-8085. [PMID: 38990173 DOI: 10.1039/d3cs00379e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/12/2024]
Abstract
The asymmetric catalytic synthesis of 1,2-diamines has received considerable interest, especially in the last ten years, due to their presence in biologically active compounds and their applications for the development of synthetic building blocks, chiral ligands and organocatalysts. Synthetic strategies based on C-N bond-forming reactions involve mainly (a) ring opening of aziridines and azabenzonorbornadienes, (b) hydroamination of allylic amines, (c) hydroamination of enamines and (d) diamination of olefins. In the case of C-C bond-forming reactions are included (a) the aza-Mannich reaction of imino esters, imino nitriles, azlactones, isocyano acetates, and isothiocyanates with imines, (b) the aza-Henry reaction of nitroalkanes with imines, (c) imine-imine coupling reactions, and (d) reductive coupling of enamines with imines, and (e) [3+2] cycloaddition with imines. C-H bond forming reactions include hydrogenation of CN bonds and C-H amination reactions. Other catalytic methods include desymmetrization reactions of meso-diamines.
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Affiliation(s)
- Francisco Foubelo
- Departamento de Química Orgánica and Instituto de Síntesis Orgánica (ISO), Universidad de Alicante, Apdo. 99, E-03080 Alicante, Spain
- Centro de Innovación en Química Avanzada (ORFEO-CINQA), Universidad de Alicante, Apdo. 99, E-03080 Alicante, Spain.
| | - Carmen Nájera
- Centro de Innovación en Química Avanzada (ORFEO-CINQA), Universidad de Alicante, Apdo. 99, E-03080 Alicante, Spain.
| | - Ma Gracia Retamosa
- Departamento de Química Orgánica and Instituto de Síntesis Orgánica (ISO), Universidad de Alicante, Apdo. 99, E-03080 Alicante, Spain
- Centro de Innovación en Química Avanzada (ORFEO-CINQA), Universidad de Alicante, Apdo. 99, E-03080 Alicante, Spain.
| | - José M Sansano
- Departamento de Química Orgánica and Instituto de Síntesis Orgánica (ISO), Universidad de Alicante, Apdo. 99, E-03080 Alicante, Spain
- Centro de Innovación en Química Avanzada (ORFEO-CINQA), Universidad de Alicante, Apdo. 99, E-03080 Alicante, Spain.
| | - Miguel Yus
- Centro de Innovación en Química Avanzada (ORFEO-CINQA), Universidad de Alicante, Apdo. 99, E-03080 Alicante, Spain.
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2
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Zhao M, Zhao Z, Wei Z, Cao J, Liang D, Lin Y, Duan H. Asymmetric Mannich Reaction of Isatin-Derived Ketimines with α-Fluoroindanones Catalyzed by a Chiral Phase-Transfer Catalyst. J Org Chem 2024; 89:4474-4483. [PMID: 38506434 DOI: 10.1021/acs.joc.3c02668] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/21/2024]
Abstract
A highly enantioselective Mannich reaction of α-fluoroindanones with isatin-derived N-Boc-ketimines catalyzed by a quinine-derived phase-transfer catalyst was developed. A variety of 3-substituted 3-amino-2-oxindoles bearing fluorine-containing, vicinal, tetrasubstituted stereocenters were constructed using this protocol in high yields (83-95%), with moderate to excellent enantioselectivities (66-91%) and high diastereoselectivities (up to >99:1).
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Affiliation(s)
- Meiyan Zhao
- Department of Organic Chemistry, College of Chemistry, Jilin University, 2699 Qianjin Street, Changchun 130012, China
| | - Zhiqi Zhao
- Department of Organic Chemistry, College of Chemistry, Jilin University, 2699 Qianjin Street, Changchun 130012, China
| | - Zhonglin Wei
- Department of Organic Chemistry, College of Chemistry, Jilin University, 2699 Qianjin Street, Changchun 130012, China
| | - Jungang Cao
- Department of Organic Chemistry, College of Chemistry, Jilin University, 2699 Qianjin Street, Changchun 130012, China
| | - Dapeng Liang
- Department of Organic Chemistry, College of Chemistry, Jilin University, 2699 Qianjin Street, Changchun 130012, China
| | - Yingjie Lin
- Department of Organic Chemistry, College of Chemistry, Jilin University, 2699 Qianjin Street, Changchun 130012, China
| | - Haifeng Duan
- Department of Organic Chemistry, College of Chemistry, Jilin University, 2699 Qianjin Street, Changchun 130012, China
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3
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Park JH, Maity P, Paladhi S, Bae HY, Song CE. Enantioselective Synthesis of Chiral 2-Nitroallylic Amines via Cooperative Cation-Binding Catalysis. Chemistry 2023; 29:e202301787. [PMID: 37370249 DOI: 10.1002/chem.202301787] [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: 06/04/2023] [Revised: 06/23/2023] [Accepted: 06/27/2023] [Indexed: 06/29/2023]
Abstract
Chiral allylic amines are valuable building blocks for biologically important compounds and natural products. In this study, we present the use of cooperative cation-binding catalysis as an efficient method for synthesizing chiral allylic amines. By utilizing a chiral oligoEG and potassium fluoride as a cation-binding catalyst and base, respectively, a wide range of biologically relevant chiral 2-nitroallylic amines are obtained with excellent enantioselectivities (up to >99 % ee) through the organocatalytic asymmetric aza-Henry-like reaction of β-monosubstituted and β,β-disubstituted nitroalkenes with α-amidosulfones as imine precursors. Extensive experimental studies are presented to illustrate plausible mechanisms. Preliminary use of a chiral 2-nitroallylic amine as a Michael acceptor demonstrated its potential application for diversity-oriented synthesis of bioactive compounds.
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Affiliation(s)
- Jin Hyun Park
- Department of Chemistry, Sungkyunkwan University, Suwon, 16419, Korea
| | - Pintu Maity
- Department of Chemistry, Sungkyunkwan University, Suwon, 16419, Korea
| | - Sushovan Paladhi
- Department of Chemistry, Sungkyunkwan University, Suwon, 16419, Korea
- Department of Chemistry, Thakur Prasad Singh (T.P.S.) College, Patna, 800001, India
| | - Han Yong Bae
- Department of Chemistry, Sungkyunkwan University, Suwon, 16419, Korea
| | - Choong Eui Song
- Department of Chemistry, Sungkyunkwan University, Suwon, 16419, Korea
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4
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Smajlagic I, Johnston JN, Dudding T. Secondary Orbital Effect Involving Fluorine is Responsible for Substrate-Controlled Diastereodivergence in the Catalyzed syn-aza-Henry Reaction of α-Fluoronitroalkanes. Chemistry 2023; 29:e202204066. [PMID: 36607705 DOI: 10.1002/chem.202204066] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2022] [Revised: 01/05/2023] [Accepted: 01/06/2023] [Indexed: 01/07/2023]
Abstract
The fluorine atom is a powerful, yet enigmatic influence on chemical reactions. True to form, fluorine was recently discovered to effect diastereodivergence in an enantioselective aza-Henry reaction, resulting in a very rare case of syn-β-amino nitroalkane products. More bewildering was the observation of an apparent hierarchy of substituents within this substrate-controlled behavior: Ph>F>alkyl. These cases have now been examined comprehensively by computational methods, including both non-fluorinated and α-fluoro nitronate additions to aldimines catalyzed by a chiral bis(amidine) [BAM] proton complex. This study revealed the network of non-covalent interactions that dictate anti- (α-aryl) versus syn-selectivity (α-alkyl) using α-fluoronitronate nucleophiles, and an underlying secondary orbital interaction between fluorine and the activated azomethine.
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Affiliation(s)
- Ivor Smajlagic
- Department of Chemistry, Brock University, 1812 Sir Isaac Brock Way, St., Catharines, ON L2S 3A1, Canada
| | - Jeffrey N Johnston
- Department of Chemistry and Institute of Chemical Biology, Vanderbilt University Nashville, Tennessee, 37235, USA
| | - Travis Dudding
- Department of Chemistry, Brock University, 1812 Sir Isaac Brock Way, St., Catharines, ON L2S 3A1, Canada
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5
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Li J, Wei Z, Cao J, Liang D, Lin Y, Duan H. Aymmetric Aza-Friedel-Crafts Reaction of Isatin-Derived Ketimines with Indoles Catalyzed by a Chiral Phase-Transfer Catalyst. J Org Chem 2022; 87:2532-2542. [PMID: 35084194 DOI: 10.1021/acs.joc.1c02477] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
A highly enantioselective aza-Friedel-Crafts reaction of 1H-indoles with isatin-derived N-Cbz-ketimines catalyzed by quinine-derived phase-transfer catalysts was developed. A series of chiral 3-aminobisindole compounds containing a tetrasubstituted stereocenter were constructed by this protocol in high yields (82-91%) and moderate to excellent enantioselectivities (46-94% ee).
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Affiliation(s)
- Jing Li
- Department of Organic Chemistry, College of Chemistry, Jilin University, 2699 Qianjin Street, Changchun 130012, China
| | - Zhonglin Wei
- Department of Organic Chemistry, College of Chemistry, Jilin University, 2699 Qianjin Street, Changchun 130012, China
| | - Jungang Cao
- Department of Organic Chemistry, College of Chemistry, Jilin University, 2699 Qianjin Street, Changchun 130012, China
| | - Dapeng Liang
- Department of Organic Chemistry, College of Chemistry, Jilin University, 2699 Qianjin Street, Changchun 130012, China
| | - Yingjie Lin
- Department of Organic Chemistry, College of Chemistry, Jilin University, 2699 Qianjin Street, Changchun 130012, China
| | - Haifeng Duan
- Department of Organic Chemistry, College of Chemistry, Jilin University, 2699 Qianjin Street, Changchun 130012, China
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6
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Liu B, Qiu H, Chen X, Li W, Zhang J. Copper-catalyzed asymmetric tandem borylative addition and aldol cyclization. Org Chem Front 2020. [DOI: 10.1039/d0qo00654h] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A highly enantioselective asymmetric copper-catalyzed tandem conjugate addition/aldol cyclization of electron-deficient olefins with B2pin2 was developed, which provided a rapid access to indanes bearing three consecutive chiral stereogenic centers.
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Affiliation(s)
- Bing Liu
- National Doping Test Laboratory Shanghai
- Shanghai University of Sport
- Shanghai
- P. R. China
| | - Haile Qiu
- Department of Chemistry
- East China Normal University
- Shanghai
- P. R. China
| | - Xiaofeng Chen
- Department of Chemistry
- East China Normal University
- Shanghai
- P. R. China
| | - Wenbo Li
- Department of Chemistry
- East China Normal University
- Shanghai
- P. R. China
| | - Junliang Zhang
- Department of Chemistry
- Fudan University
- Shanghai 200438
- P. R. China
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7
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Marčeková M, Gerža P, Šoral M, Moncol J, Berkeš D, Kolarovič A, Jakubec P. Crystallization Does It All: An Alternative Strategy for Stereoselective Aza-Henry Reaction. Org Lett 2019; 21:4580-4584. [PMID: 31184186 DOI: 10.1021/acs.orglett.9b01489] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
An efficient and experimentally straightforward method for the stereoselective synthesis of a variety of β-nitro-α-amino carboxylic acids via aza-Henry (nitro-Mannich) reaction of aldimines is disclosed, yielding either anti- or a rarely reported syn-configuration. The reaction operates directly on free glyoxylic acid and generates imine species in situ. Crystallization-controlled diastereoselectivity enables isolation of the target compounds in high enantio- and diastereomeric purities by a simple filtration.
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Affiliation(s)
- Michaela Marčeková
- Faculty of Chemical and Food Technology , Slovak University of Technology , Radlinského 9 , 812 37 Bratislava , Slovakia
| | - Peter Gerža
- Faculty of Chemical and Food Technology , Slovak University of Technology , Radlinského 9 , 812 37 Bratislava , Slovakia
| | - Michal Šoral
- Faculty of Chemical and Food Technology , Slovak University of Technology , Radlinského 9 , 812 37 Bratislava , Slovakia
| | - Ján Moncol
- Faculty of Chemical and Food Technology , Slovak University of Technology , Radlinského 9 , 812 37 Bratislava , Slovakia
| | - Dušan Berkeš
- Faculty of Chemical and Food Technology , Slovak University of Technology , Radlinského 9 , 812 37 Bratislava , Slovakia
| | - Andrej Kolarovič
- Department of Chemistry, Faculty of Education , Trnava University , Priemyselná 4 , 918 43 Trnava , Slovakia
| | - Pavol Jakubec
- Faculty of Chemical and Food Technology , Slovak University of Technology , Radlinského 9 , 812 37 Bratislava , Slovakia
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8
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Devannah V, Sharma R, Watson DA. Nickel-Catalyzed Asymmetric C-Alkylation of Nitroalkanes: Synthesis of Enantioenriched β-Nitroamides. J Am Chem Soc 2019; 141:8436-8440. [PMID: 31082224 DOI: 10.1021/jacs.9b04175] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
A general catalytic method for asymmetric C-alkylation of nitroalkanes using nickel catalysis is described. This method enables the formation of highly enantioenriched β-nitroamides from readily available α-bromoamides using mild reaction conditions that are compatible with a wide range of functional groups. When combined with subsequent reactions, this method allows access to highly enantioenriched products with nitrogen-bearing fully substituted carbon centers.
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Affiliation(s)
- Vijayarajan Devannah
- Department of Chemistry and Biochemistry , University of Delaware , Newark , Delaware 19716 , United States
| | - Rajgopal Sharma
- Department of Chemistry and Biochemistry , University of Delaware , Newark , Delaware 19716 , United States
| | - Donald A Watson
- Department of Chemistry and Biochemistry , University of Delaware , Newark , Delaware 19716 , United States
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9
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Liu S, Gao WC, Miao YH, Wang MC. Dinuclear Zinc-AzePhenol Catalyzed Asymmetric Aza-Henry Reaction of N-Boc Imines and Nitroalkanes under Ambient Conditions. J Org Chem 2019; 84:2652-2659. [PMID: 30707574 DOI: 10.1021/acs.joc.8b02943] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
The asymmetric aza-Henry reaction of N-Boc imines and nitroalkanes was realized in the presence of 10 mol % dinuclear zinc-AzePhenol catalysts under ambient conditions. A variety of nitroamines were obtained in good yields (up to 97%) with excellent enantioselectivities (up to 99% ee) and high diasteroselectivity (up to 14:1 dr). Our protocol combined the operational simplicity and mild reaction conditions, thus making the process amenable for technical applications.
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Affiliation(s)
- Shanshan Liu
- Shaanxi Key Laboratory of Chemical Additives for Industry, College of Chemistry and Chemical Engineering , Shaanxi University of Science and Technology , 6 Xuefu Road , Weiyang District, Xi'an , Shaanxi 710021 , P. R. China
| | - Wen-Chao Gao
- College of Chemistry and Pharmaceutical Engineering , Nanyang Normal University , 1638 Wolong Road , Nanyang , Henan 473061 , P. R. China.,The College of Chemistry and Molecular Engineering , Zhengzhou University , No. 75 Daxue Road , Zhengzhou , Henan 450052 , P. R. China
| | - Yu-Hang Miao
- The College of Chemistry and Molecular Engineering , Zhengzhou University , No. 75 Daxue Road , Zhengzhou , Henan 450052 , P. R. China
| | - Min-Can Wang
- The College of Chemistry and Molecular Engineering , Zhengzhou University , No. 75 Daxue Road , Zhengzhou , Henan 450052 , P. R. China
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10
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Marcantoni E, Palmieri A, Petrini M. Recent synthetic applications of α-amido sulfones as precursors of N-acylimino derivatives. Org Chem Front 2019. [DOI: 10.1039/c9qo00196d] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
α-Amido sulfones can be directly used as N-acylimine or N-acyliminium ion precursors in several synthetic processes aimed at the preparation of nitrogen containing compounds. This review collects the most relevant and practical utilizations of α-amido sulfones appeared in the literature after 2005.
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Affiliation(s)
- Enrico Marcantoni
- School of Science and Technology
- Chemistry Division
- University of Camerino
- 1 I-62032 Camerino
- Italy
| | - Alessandro Palmieri
- School of Science and Technology
- Chemistry Division
- University of Camerino
- 1 I-62032 Camerino
- Italy
| | - Marino Petrini
- School of Science and Technology
- Chemistry Division
- University of Camerino
- 1 I-62032 Camerino
- Italy
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11
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Fang Y, Wei Z, Wang Y, Liu S, Cao J, Liang D, Lin Y, Duan H. The asymmetric vinylogous Mannich reaction of noncyclic dicyanoolefins catalyzed by a bifunctional thiourea–ammonium salt phase transfer catalyst. NEW J CHEM 2019. [DOI: 10.1039/c9nj01635j] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
An efficient enantioselective vinylogous Mannich reaction of N-Boc aminosulfones with noncyclic α,α-dicyanoolefins has been realized using an extraordinary bifunctional thiourea–ammonium salt phase transfer catalyst derived from quinine.
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Affiliation(s)
- Yanhong Fang
- Department of Organic Chemistry
- College of Chemistry
- Jilin University
- Changchun 130012
- China
| | - Zhonglin Wei
- Department of Organic Chemistry
- College of Chemistry
- Jilin University
- Changchun 130012
- China
| | - Ying Wang
- Department of Ophthalmology, the second Hospital of Jilin University
- Changchun
- China
| | - Shuo Liu
- Department of Organic Chemistry
- College of Chemistry
- Jilin University
- Changchun 130012
- China
| | - Jungang Cao
- Department of Organic Chemistry
- College of Chemistry
- Jilin University
- Changchun 130012
- China
| | - Dapeng Liang
- Department of Organic Chemistry
- College of Chemistry
- Jilin University
- Changchun 130012
- China
| | - Yingjie Lin
- Department of Organic Chemistry
- College of Chemistry
- Jilin University
- Changchun 130012
- China
| | - Haifeng Duan
- Department of Organic Chemistry
- College of Chemistry
- Jilin University
- Changchun 130012
- China
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12
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Gabrielli S, Mariotti N, Chiurchiù E, Ballini R, Petrini M, Palmieri A. Synthetic Approach to the Preparation of (2-Acetoxy)allyl Nitro Compounds. J Org Chem 2018; 83:12855-12862. [PMID: 30251854 DOI: 10.1021/acs.joc.8b01744] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A synthetic approach to a new class of allyl nitro derivatives is reported. (2-Acetoxy)allyl nitro compounds have been prepared for the first time in a four-step procedure by a preliminary reaction of nitroalkanes with 2-(phenylselenyl)acetaldehyde. After the acetylation of the obtained nitro alcohols, the unsaturation is installed by an oxidation reaction involving the phenylselenyl group followed by a thermal elimination. The oxidation process is accomplished under flow conditions ensuring a notable lowering of overoxidation by products observed in batch.
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Affiliation(s)
- Serena Gabrielli
- Green Chemistry Group, School of Science and Technology, Chemistry Division , University of Camerino , Via S. Agostino 1 , Camerino , Macerata 62032 , Italy
| | - Nicole Mariotti
- Green Chemistry Group, School of Science and Technology, Chemistry Division , University of Camerino , Via S. Agostino 1 , Camerino , Macerata 62032 , Italy
| | - Elena Chiurchiù
- Green Chemistry Group, School of Science and Technology, Chemistry Division , University of Camerino , Via S. Agostino 1 , Camerino , Macerata 62032 , Italy
| | - Roberto Ballini
- Green Chemistry Group, School of Science and Technology, Chemistry Division , University of Camerino , Via S. Agostino 1 , Camerino , Macerata 62032 , Italy
| | - Marino Petrini
- Green Chemistry Group, School of Science and Technology, Chemistry Division , University of Camerino , Via S. Agostino 1 , Camerino , Macerata 62032 , Italy
| | - Alessandro Palmieri
- Green Chemistry Group, School of Science and Technology, Chemistry Division , University of Camerino , Via S. Agostino 1 , Camerino , Macerata 62032 , Italy
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13
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Mukhopadhyay S, Pan SC. An organocatalytic asymmetric Mannich reaction for the synthesis of 3,3-disubstituted-3,4-dihydro-2-quinolones. Org Biomol Chem 2018; 16:5407-5411. [PMID: 30024000 DOI: 10.1039/c8ob01399c] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The first organocatalytic asymmetric Mannich reaction employing 3,4-dihydro-2-quinolones has been developed for the synthesis of biologically important 3,3-disubstituted-dihydro-2-quinolones. N-Boc imine precursor amidosulfones as well as pre-formed N-Boc imine were used for this purpose. Cyclohexyldiamine derived bifunctional amino-thiourea catalysts were employed to provide the products in high enantio- and good diastereoselectivities.
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14
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Lu N, Fang Y, Gao Y, Wei Z, Cao J, Liang D, Lin Y, Duan H. Bifunctional Thiourea–Ammonium Salt Catalysts Derived from Cinchona Alkaloids: Cooperative Phase-Transfer Catalysts in the Enantioselective Aza-Henry Reaction of Ketimines. J Org Chem 2018; 83:1486-1492. [DOI: 10.1021/acs.joc.7b03078] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Ning Lu
- Department
of Organic Chemistry, College
of Chemistry, Jilin University, 2699 Qianjin Street, Changchun 130012, China
| | - Yanhong Fang
- Department
of Organic Chemistry, College
of Chemistry, Jilin University, 2699 Qianjin Street, Changchun 130012, China
| | - Yuan Gao
- Department
of Organic Chemistry, College
of Chemistry, Jilin University, 2699 Qianjin Street, Changchun 130012, China
| | - Zhonglin Wei
- Department
of Organic Chemistry, College
of Chemistry, Jilin University, 2699 Qianjin Street, Changchun 130012, China
| | - Jungang Cao
- Department
of Organic Chemistry, College
of Chemistry, Jilin University, 2699 Qianjin Street, Changchun 130012, China
| | - Dapeng Liang
- Department
of Organic Chemistry, College
of Chemistry, Jilin University, 2699 Qianjin Street, Changchun 130012, China
| | - Yingjie Lin
- Department
of Organic Chemistry, College
of Chemistry, Jilin University, 2699 Qianjin Street, Changchun 130012, China
| | - Haifeng Duan
- Department
of Organic Chemistry, College
of Chemistry, Jilin University, 2699 Qianjin Street, Changchun 130012, China
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