1
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Salin AV, Shabanov AA, Khayarov KR, Nugmanov RI, Islamov DR. Stereoelectronic Effect in the Reaction of α-Methylene Lactones with Tertiary Phosphines and Its Application in Organocatalysis. J Org Chem 2023; 88:11954-11967. [PMID: 37540578 DOI: 10.1021/acs.joc.3c01223] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/06/2023]
Abstract
The kinetic data indicate that the addition of tertiary phosphines to α-methylene lactones in acetic acid is strongly accelerated in comparison to the reactions of related open-chain esters. Six-membered α-methylene-δ-valerolactone exhibited a more pronounced rate increase than five-membered α-methylene-γ-butyrolactone. The use of α-methylene-γ-butyrolactam as a nitrogen analogue of α-methylene-γ-butyrolactone resulted in a total loss of the reaction acceleration. The observed reactivities were rationalized by DFT calculations at the RwB97XD/6-31+G(d,p) level of theory, showing that the intramolecular interaction between phosphonium and enolate oxygen centers provided by the locked s-cis-geometry of the heterocycles plays an important role in the stabilization of intermediate zwitterions. The reactivity is also controlled by the conformational flexibility of the heterocycle. The geometries of five-membered and, especially, six-membered lactone cycles are slightly changed upon the nucleophilic attack of phosphine, leading to the stabilizing stereoelectronic effect by the Ρ···Ο interaction. The addition of phosphine to α-methylene-γ-butyrolactam significantly distorts the initial geometry of the heterocycle, making the nucleophilic attack unfavorable. The application of the stereoelectronic effect to enhance the efficiency of the phosphine-catalyzed Michael and Pudovik reactions of α-methylene lactones was demonstrated.
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Affiliation(s)
- Alexey V Salin
- A.M. Butlerov Institute of Chemistry,Kazan Federal University, Kremlevskaya Street 18, Kazan 420008, Russian Federation
| | - Andrey A Shabanov
- A.M. Butlerov Institute of Chemistry,Kazan Federal University, Kremlevskaya Street 18, Kazan 420008, Russian Federation
| | - Khasan R Khayarov
- A.M. Butlerov Institute of Chemistry,Kazan Federal University, Kremlevskaya Street 18, Kazan 420008, Russian Federation
| | - Ramil I Nugmanov
- Janssen Research & Development, Janssen Pharmaceutica N.V., Turnhoutseweg 30, Beerse B-2340, Belgium
| | - Daut R Islamov
- Laboratory for Structural Analysis of Biomacromolecules, Kazan Scientific Center of Russian Academy of Science, Kremlevskaya Street 31, Kazan 420008, Russian Federation
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2
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Yagci BB, Donmez SE, Şahin O, Türkmen YE. Catalytic aza-Nazarov cyclization reactions to access α-methylene-γ-lactam heterocycles. Beilstein J Org Chem 2023; 19:66-77. [PMID: 36741815 PMCID: PMC9874235 DOI: 10.3762/bjoc.19.6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2022] [Accepted: 01/10/2023] [Indexed: 01/19/2023] Open
Abstract
We have developed a catalytic aza-Nazarov reaction of N-acyliminium salts generated in situ from the reaction of a variety of cyclic and acyclic imines with α,β-unsaturated acyl chlorides to afford substituted α-methylene-γ-lactam heterocycles. The reactions proceed effectively in the presence of catalytic (20 mol %) amounts of AgOTf as an anion exchange agent or hydrogen-bond donors such as squaramides and thioureas as anion-binding organocatalysts. The aza-Nazarov cyclization of 3,4-dihydroisoquinolines with α,β-unsaturated acyl chlorides gives tricyclic lactam products 7 in up to 79% yield with full diastereocontrol (dr = >99:1). The use of acyclic imines in a similar catalytic aza-Nazarov reaction with 20 mol % of AgOTf results in the formation of α-methylene-γ-lactam heterocycles 19 in up to 76% yield and with good to high diastereoselectivities (4.3:1 to 16:1). We have demonstrated the scalability of the reaction with a gram-scale example. The relative stereochemistry of the α-methylene-γ-lactam products 19 has been determined via the single-crystal X-ray analysis of lactam 19l. In order to shed light on the details of the reaction mechanism, we have performed carefully designed mechanistic studies which consist of experiments on the effect of β-silicon stabilization, the alkene geometry of the α,β-unsaturated acyl chloride reactants, and adventitious water on the success of the catalytic aza-Nazarov reaction.
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Affiliation(s)
- Bilge Banu Yagci
- Department of Chemistry, Faculty of Science, Bilkent University, Ankara 06800, Turkey
| | - Selin Ezgi Donmez
- Department of Chemistry, Faculty of Science, Bilkent University, Ankara 06800, Turkey
| | - Onur Şahin
- Department of Occupational Health & Safety, Faculty of Health Sciences, Sinop University, Sinop 57000, Turkey
| | - Yunus Emre Türkmen
- Department of Chemistry, Faculty of Science, Bilkent University, Ankara 06800, Turkey,UNAM – National Nanotechnology Research Center, Institute of Materials Science and Nanotechnology, Bilkent University, Ankara 06800, Turkey
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3
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Shan L, Li H, Zheng W, Wang X, Wang X, Hu Y. Tandem Synthesis of 2-Azaspiro[4.5]deca-1,6,9-trien-8-ones Based on Tf 2O-Promoted Activation of N-(2-Propyn-1-yl) Amides. J Org Chem 2023; 88:525-533. [PMID: 36522846 DOI: 10.1021/acs.joc.2c02504] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Structurally novel 2-azaspiro[4.5]deca-1,6,9-trien-8-ones were synthesized from N-(2-propyn-1-yl) amides and 1,3,5-trimethoxybenzenes by a tandem method consisting of a Tf2O-promoted amide activation and a TfOH-promoted Friedel-Crafts ipso-cyclization. The method offered the first example of using N-(2-propyn-1-yl) amides as substrates in both Tf2O-promoted secondary amide activation and the synthesis of azaspiro[4.5]deca-6,9-diene-8-ones.
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Affiliation(s)
- Lidong Shan
- Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology (Ministry of Education), Department of Chemistry, Tsinghua University, Beijing 100084, P. R. China
| | - Hongchen Li
- Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology (Ministry of Education), Department of Chemistry, Tsinghua University, Beijing 100084, P. R. China
| | - Weiping Zheng
- Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology (Ministry of Education), Department of Chemistry, Tsinghua University, Beijing 100084, P. R. China
| | - Xingyong Wang
- Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology (Ministry of Education), Department of Chemistry, Tsinghua University, Beijing 100084, P. R. China
| | - Xinyan Wang
- Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology (Ministry of Education), Department of Chemistry, Tsinghua University, Beijing 100084, P. R. China
| | - Yuefei Hu
- Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology (Ministry of Education), Department of Chemistry, Tsinghua University, Beijing 100084, P. R. China
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4
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Hernández-Guadarrama A, Cuevas F, Montoya-Balbás IJ, Román-Bravo P, Linzaga-Elizalde I. Synthesis of β-mono- and β,γ-di-substituted α-methylene-γ-lactams. Tetrahedron Lett 2022. [DOI: 10.1016/j.tetlet.2022.154105] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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5
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Phosphine-catalyzed [3+2] cycloaddition of Morita—Baylis—Hillman carbonates to isothiocyanates in the synthesis of adamantane-containing trisubstituted aminothiophenes. Russ Chem Bull 2021. [DOI: 10.1007/s11172-021-3162-y] [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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Singh RP, Rao VUB, Singh S, Tripathi KN. Stereoselective Synthesis of Spiro-α-methylene-γ-lactams via Chiral Quaternary 3-Aminooxindole Adducts Accessed by Zn-Mediated Allylation of Sulfinyl Ketimines. SYNTHESIS-STUTTGART 2020. [DOI: 10.1055/s-0040-1707907] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
An efficient method for the stereoselective synthesis of α-methylene-γ-lactams via quaternary 3-aminooxindoles with very high selectivity (up to 98% ee) is described. The methodology leads to the construction of sterically congested chiral quaternary 3-aminooxindole adducts in good yield and with moderate to excellent diastereoselectivity (dr up to 95:5). The relative stereochemistry of the chiral quaternary 3-aminooxindoles adduct and the spiro-α-methylene-γ-lactam was confirmed to be syn by single-crystal X-ray structure analysis. Furthermore, the α-methylene-γ-lactam was successfully transformed into a range of chiral synthons.
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7
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Paria S, Carletti E, Marcon M, Cherubini-Celli A, Mazzanti A, Rancan M, Dell'Amico L, Bonchio M, Companyó X. Light-Triggered Catalytic Asymmetric Allylic Benzylation with Photogenerated C-Nucleophiles. J Org Chem 2020; 85:4463-4474. [PMID: 32081000 PMCID: PMC7997570 DOI: 10.1021/acs.joc.0c00175] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
![]()
Herein
is reported the asymmetric allylic benzylation of Morita–Baylis–Hillman
(MBH) carbonates with 2-methylbenzophenone (MBP) derivatives as nonstabilized
photogenerated C-nucleophiles. The dual activation
of both reaction partners, chiral Lewis-base activation of the electrophile
and light activation of the nucleophile, enables the stereoselective
installation of benzyl groups at the allylic position to forge tertiary
and quaternary carbon centers.
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Affiliation(s)
- Suva Paria
- Department of Chemical Sciences, University of Padova, via Marzolo 1, 35131 Padova, Italy
| | - Edoardo Carletti
- Department of Chemical Sciences, University of Padova, via Marzolo 1, 35131 Padova, Italy
| | - Michela Marcon
- Department of Chemical Sciences, University of Padova, via Marzolo 1, 35131 Padova, Italy
| | | | - Andrea Mazzanti
- Department of Industrial Chemistry "Toso Montanari", University of Bologna, viale del Risorgimento 4, 40136 Bologna, Italy
| | - Marzio Rancan
- ICMATE-CNR, Department of Chemical Sciences, University of Padova, via Marzolo 1, 35131 Padova, Italy
| | - Luca Dell'Amico
- Department of Chemical Sciences, University of Padova, via Marzolo 1, 35131 Padova, Italy
| | - Marcella Bonchio
- Department of Chemical Sciences, University of Padova, via Marzolo 1, 35131 Padova, Italy
| | - Xavier Companyó
- Department of Chemical Sciences, University of Padova, via Marzolo 1, 35131 Padova, Italy
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8
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Kitagaki S, Tsuji M, Teramoto H, Takenaga N, Yoshida K. Planar Chiral Phosphino[2.2]paracyclophanol-Catalyzed Highly Regio- and Stereoselective [3+2] Annulation Reaction of Morita–Baylis–Hillman Carbonates with Dicyanomethylideneoxindoles. HETEROCYCLES 2020. [DOI: 10.3987/com-19-s(f)3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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9
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Donmez SE, Soydaş E, Aydın G, Şahin O, Bozkaya U, Türkmen YE. Aza-Nazarov Cyclization Reactions via Anion Exchange Catalysis. Org Lett 2019; 21:554-558. [PMID: 30985150 DOI: 10.1021/acs.orglett.8b03886] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
A catalytic aza-Nazarov cyclization between 3,4-dihydroisoquinolines and α,β-unsaturated acyl chlorides has been developed to access α-methylene-γ-lactam products in good yields (up to 79%) as single diastereomers. The reactions proceed efficiently when AgOTf is used as an anion exchange catalyst with a 20 mol % loading at 80 °C. Computational studies were performed to investigate the reaction mechanism, and the findings support the role of the -TMS group in reducing the reaction barrier of the key cyclization step.
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Affiliation(s)
- Selin E Donmez
- Department of Chemistry, Faculty of Science , Bilkent University , Ankara , 06800 , Turkey
| | - Emine Soydaş
- Department of Chemistry , Hacettepe University , Ankara , 06800 , Turkey
| | - Gökçen Aydın
- Department of Chemistry, Faculty of Science , Bilkent University , Ankara , 06800 , Turkey
| | - Onur Şahin
- Sinop University , Scientific and Technological Research Application and Research Center , Sinop , 57000 , Turkey
| | - Uğur Bozkaya
- Department of Chemistry , Hacettepe University , Ankara , 06800 , Turkey
| | - Yunus E Türkmen
- Department of Chemistry, Faculty of Science , Bilkent University , Ankara , 06800 , Turkey.,UNAM - National Nanotechnology Research Center, Institute of Materials Science and Nanotechnology , Bilkent University , Ankara , 06800 , Turkey
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10
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Affiliation(s)
- Marta Meazza
- Faculty of Natural and Environmental Sciences; University of Southampton; University Road SO17 1BJ UK
| | - Xavier Companyó
- Dipartimento di Scienze Chimiche; University of Padua; via Marzolo 1 35131 Padua Italy
| | - Ramon Rios
- Faculty of Natural and Environmental Sciences; University of Southampton; University Road SO17 1BJ UK
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11
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Chen P, Yue Z, Zhang J, Lv X, Wang L, Zhang J. Phosphine-Catalyzed Asymmetric Umpolung Addition of Trifluoromethyl Ketimines to Morita-Baylis-Hillman Carbonates. Angew Chem Int Ed Engl 2018; 55:13316-13320. [PMID: 27634055 DOI: 10.1002/anie.201607918] [Citation(s) in RCA: 104] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2016] [Indexed: 12/17/2022]
Abstract
A novel phosphine-catalyzed, highly enantioselective umpolung addition of trifluoromethyl ketimines to Morita-Baylis-Hillman carbonates was developed and it provides facile access to optically active trifluoromethyl amines with a chiral tertiary stereocenter under mild reaction conditions. The salient features of this reaction include general substrate scope, mild reaction conditions, good yields, high enantioselectivity, ease of scale-up to gram scale, and further transformations of the products.
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Affiliation(s)
- Peng Chen
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, Shanghai, 200062, P.R. China
| | - Zhenting Yue
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, Shanghai, 200062, P.R. China
| | - Junyou Zhang
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, Shanghai, 200062, P.R. China
| | - Xi Lv
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, Shanghai, 200062, P.R. China
| | - Lei Wang
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, Shanghai, 200062, P.R. China
| | - Junliang Zhang
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, Shanghai, 200062, P.R. China.
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12
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Wei J, Li Y, Tao C, Wang H, Cheng B, Zhai H, Li Y. Organocatalytic Synthesis of 4-Aryl-1,2,3,4-tetrahydropyridines from Morita-Baylis-Hillman Carbonates through a One-Pot Three-Component Cyclization. J Org Chem 2018; 83:835-842. [DOI: 10.1021/acs.joc.7b02818] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Jian Wei
- The
State Key Laboratory of Applied Organic Chemistry, College of Chemistry
and Chemical Engineering, Lanzhou University, Lanzhou 730000, China
| | - Yuntong Li
- The
State Key Laboratory of Applied Organic Chemistry, College of Chemistry
and Chemical Engineering, Lanzhou University, Lanzhou 730000, China
| | - Cheng Tao
- The
State Key Laboratory of Applied Organic Chemistry, College of Chemistry
and Chemical Engineering, Lanzhou University, Lanzhou 730000, China
| | - Huifei Wang
- Laboratory
of Chemical Genomics, School of Chemical Biology and Biotechnology, Shenzhen Graduate School of Peking University, Shenzhen 518055, China
| | - Bin Cheng
- The
State Key Laboratory of Applied Organic Chemistry, College of Chemistry
and Chemical Engineering, Lanzhou University, Lanzhou 730000, China
| | - Hongbin Zhai
- Laboratory
of Chemical Genomics, School of Chemical Biology and Biotechnology, Shenzhen Graduate School of Peking University, Shenzhen 518055, China
| | - Yun Li
- The
State Key Laboratory of Applied Organic Chemistry, College of Chemistry
and Chemical Engineering, Lanzhou University, Lanzhou 730000, China
- State
Key Laboratory of Bioorganic and Natural Products Chemistry, Shanghai
Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
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13
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Zheng Y, Wang J, Xia PJ, Zhao QL, Xiao JA, Xiang HY, Chen XQ, Yang H. Organocatalytic Asymmetric Allylic Alkylation of Morita-Baylis-Hillman Carbonates with Diethyl 2-Aminomalonate Assisted by In Situ Protection. J Org Chem 2017; 82:12202-12208. [PMID: 29090919 DOI: 10.1021/acs.joc.7b02064] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
With the aid of in situ protection by N-(2-formylphenyl)-4-methyl-benzenesulfonamide, enantioselective allylic alkylation of Morita-Baylis-Hillman carbonates with diethyl 2-aminomalonate was successfully realized. The corresponding adducts can be obtained in up to 99% yield with up to 98% ee as well as excellent regioselectivity. Besides, the adducts with opposite configurations were readily prepared by utilizing easily available and inexpensive quinine or quinidine as organocatalyst. Facile deprotection of the resulting adduct provides straightforward access to enantiopure α-methylene-γ-lactam.
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Affiliation(s)
- Yu Zheng
- College of Chemistry and Chemical Engineering, Central South University , Changsha 410083, People's Republic of China
| | - Jing Wang
- College of Chemistry and Chemical Engineering, Central South University , Changsha 410083, People's Republic of China
| | - Peng-Ju Xia
- College of Chemistry and Chemical Engineering, Central South University , Changsha 410083, People's Republic of China
| | - Qing-Lan Zhao
- College of Chemistry and Chemical Engineering, Central South University , Changsha 410083, People's Republic of China
| | - Jun-An Xiao
- College of Chemistry and Materials Science, Guangxi Teachers Education University , Nanning, Guangxi 530001, People's Republic of China
| | - Hao-Yue Xiang
- College of Chemistry and Chemical Engineering, Central South University , Changsha 410083, People's Republic of China
| | - Xiao-Qing Chen
- College of Chemistry and Chemical Engineering, Central South University , Changsha 410083, People's Republic of China
| | - Hua Yang
- College of Chemistry and Chemical Engineering, Central South University , Changsha 410083, People's Republic of China
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14
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Espinosa M, Blay G, Cardona L, Muñoz MC, Pedro JR. Catalytic Asymmetric Formal [3+2] Cycloaddition of 2-Isocyanatomalonate Esters and Unsaturated Imines: Synthesis of Highly Substituted Chiral γ-Lactams. Chemistry 2017; 23:14707-14711. [PMID: 28845883 DOI: 10.1002/chem.201702777] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2017] [Indexed: 11/08/2022]
Abstract
Unlike their isocyano and isothiocyanato analogues, isocyanato esters remain almost unexplored as formal 1,3-dipoles in asymmetric catalytic reactions. The first asymmetric formal [3+2] cycloaddition involving isocyanato esters and electrophilic alkenes is reported. Diisopropyl 2-isocyanatomalonate reacts with α,β-unsaturated N-(o-anisidyl) imines in the presence of a Mg(OTf)2 -BOX complex to give highly substituted chiral pyrrolidinones featuring a conjugate exocyclic double bond with excellent yields and enantiomeric excesses up to 99 %. Several transformations of the resulting heterocycles, including the synthesis of a pyroglutamic acid derivative, have been carried out.
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Affiliation(s)
- Miguel Espinosa
- Departament de Química Orgànica, Facultat de Química, Universitat de València, C/ Dr. Moliner 50, 46100, Burjassot, Spain
| | - Gonzalo Blay
- Departament de Química Orgànica, Facultat de Química, Universitat de València, C/ Dr. Moliner 50, 46100, Burjassot, Spain
| | - Luz Cardona
- Departament de Química Orgànica, Facultat de Química, Universitat de València, C/ Dr. Moliner 50, 46100, Burjassot, Spain
| | - M Carmen Muñoz
- Departament de Física Aplicada, Universitat Politècnica de València, Camí de Vera, S/N, 46071, València, Spain
| | - José R Pedro
- Departament de Química Orgànica, Facultat de Química, Universitat de València, C/ Dr. Moliner 50, 46100, Burjassot, Spain
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15
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Kishi K, Arteaga FA, Takizawa S, Sasai H. Multifunctional catalysis: stereoselective construction of α-methylidene-γ-lactams via an amidation/Rauhut–Currier sequence. Chem Commun (Camb) 2017; 53:7724-7727. [DOI: 10.1039/c7cc02839c] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Novel chiral organocatalyst 5a, which can simultaneously act as Brønsted and Lewis base catalysts, leads to a one-pot amidation/Rauhut–Currier sequence that affords highly functionalized α-methylidene-γ-lactams with chiral tetrasubstituted carbon stereogenic centers.
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Affiliation(s)
- Kenta Kishi
- The Institute of Scientific and Industrial Research (ISIR)
- Osaka University
- Ibaraki-shi
- Japan
| | | | - Shinobu Takizawa
- The Institute of Scientific and Industrial Research (ISIR)
- Osaka University
- Ibaraki-shi
- Japan
| | - Hiroaki Sasai
- The Institute of Scientific and Industrial Research (ISIR)
- Osaka University
- Ibaraki-shi
- Japan
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16
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Chen P, Yue Z, Zhang J, Lv X, Wang L, Zhang J. Phosphine-Catalyzed Asymmetric Umpolung Addition of Trifluoromethyl Ketimines to Morita-Baylis-Hillman Carbonates. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201607918] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Peng Chen
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes; School of Chemistry and Molecular Engineering; East China Normal University; Shanghai 200062 P.R. China
| | - Zhenting Yue
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes; School of Chemistry and Molecular Engineering; East China Normal University; Shanghai 200062 P.R. China
| | - Junyou Zhang
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes; School of Chemistry and Molecular Engineering; East China Normal University; Shanghai 200062 P.R. China
| | - Xi Lv
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes; School of Chemistry and Molecular Engineering; East China Normal University; Shanghai 200062 P.R. China
| | - Lei Wang
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes; School of Chemistry and Molecular Engineering; East China Normal University; Shanghai 200062 P.R. China
| | - Junliang Zhang
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes; School of Chemistry and Molecular Engineering; East China Normal University; Shanghai 200062 P.R. China
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17
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Galla Z, Forró E, Fülöp F. Enhanced enzymatic synthesis of the enantiopure intermediate for the blockbuster drug intermediate abacavir through a two-step enzymatic cascade reaction. ACTA ACUST UNITED AC 2016. [DOI: 10.1016/j.tetasy.2016.06.019] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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18
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Li X, Su J, Liu Z, Zhu Y, Dong Z, Qiu S, Wang J, Lin L, Shen Z, Yan W, Wang K, Wang R. Synthesis of Chiral α-Trifluoromethylamines with 2,2,2-Trifluoroethylamine as a “Building Block”. Org Lett 2016; 18:956-9. [DOI: 10.1021/acs.orglett.5b03566] [Citation(s) in RCA: 51] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Xiaoyuan Li
- Institute
of Pharmacology, Key Laboratory of Preclinical Study for New Drugs
of Gansu Province, School of Basic, Medical Sciences, Lanzhou University, Lanzhou 730000, China
| | - Jinhuan Su
- Institute
of Pharmacology, Key Laboratory of Preclinical Study for New Drugs
of Gansu Province, School of Basic, Medical Sciences, Lanzhou University, Lanzhou 730000, China
| | - Zhourujun Liu
- Institute
of Pharmacology, Key Laboratory of Preclinical Study for New Drugs
of Gansu Province, School of Basic, Medical Sciences, Lanzhou University, Lanzhou 730000, China
| | - Yuanyuan Zhu
- Institute
of Pharmacology, Key Laboratory of Preclinical Study for New Drugs
of Gansu Province, School of Basic, Medical Sciences, Lanzhou University, Lanzhou 730000, China
| | - Zhenghao Dong
- Institute
of Pharmacology, Key Laboratory of Preclinical Study for New Drugs
of Gansu Province, School of Basic, Medical Sciences, Lanzhou University, Lanzhou 730000, China
| | - Shuai Qiu
- Institute
of Pharmacology, Key Laboratory of Preclinical Study for New Drugs
of Gansu Province, School of Basic, Medical Sciences, Lanzhou University, Lanzhou 730000, China
| | - Jiayi Wang
- Institute
of Pharmacology, Key Laboratory of Preclinical Study for New Drugs
of Gansu Province, School of Basic, Medical Sciences, Lanzhou University, Lanzhou 730000, China
| | - Li Lin
- Institute
of Pharmacology, Key Laboratory of Preclinical Study for New Drugs
of Gansu Province, School of Basic, Medical Sciences, Lanzhou University, Lanzhou 730000, China
| | - Zhiqiang Shen
- State
Key Laboratory for Oxo Synthesis and Selective Oxidation, Lanzhou
Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, Peoples Republic of China
| | - Wenjin Yan
- Institute
of Pharmacology, Key Laboratory of Preclinical Study for New Drugs
of Gansu Province, School of Basic, Medical Sciences, Lanzhou University, Lanzhou 730000, China
| | - Kairong Wang
- Institute
of Pharmacology, Key Laboratory of Preclinical Study for New Drugs
of Gansu Province, School of Basic, Medical Sciences, Lanzhou University, Lanzhou 730000, China
| | - Rui Wang
- Institute
of Pharmacology, Key Laboratory of Preclinical Study for New Drugs
of Gansu Province, School of Basic, Medical Sciences, Lanzhou University, Lanzhou 730000, China
- State
Key Laboratory for Oxo Synthesis and Selective Oxidation, Lanzhou
Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, Peoples Republic of China
- Collaborative Innovation Centre of Chemical Science and Engineering (Tianjin), Tianjin 300071, China
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19
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Riaño I, Díaz E, Uria U, Reyes E, Carrillo L, Vicario JL. Organocatalytic enantio- and diastereoselective synthesis of 3,5-disubstituted prolines. Chem Commun (Camb) 2016; 52:2330-3. [DOI: 10.1039/c5cc09329e] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The asymmetric synthesis of substituted pyrrolidines has been accomplished using a novel organocatalytic cyclization reaction promoted by aCinchonaalkaloid base primary amine.
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Affiliation(s)
- Iker Riaño
- Department of Organic Chemistry II
- University of the Basque Country (UPV/EHU)
- 48080 Bilbao
- Spain
| | - Estibaliz Díaz
- Department of Organic Chemistry II
- University of the Basque Country (UPV/EHU)
- 48080 Bilbao
- Spain
| | - Uxue Uria
- Department of Organic Chemistry II
- University of the Basque Country (UPV/EHU)
- 48080 Bilbao
- Spain
| | - Efraím Reyes
- Department of Organic Chemistry II
- University of the Basque Country (UPV/EHU)
- 48080 Bilbao
- Spain
| | - Luisa Carrillo
- Department of Organic Chemistry II
- University of the Basque Country (UPV/EHU)
- 48080 Bilbao
- Spain
| | - Jose L. Vicario
- Department of Organic Chemistry II
- University of the Basque Country (UPV/EHU)
- 48080 Bilbao
- Spain
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20
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Xu Y, Huang D, Wang KH, Ma J, Su Y, Fu Y, Hu Y. Tin Powder-Promoted One-Pot Construction of α-Methylene-γ-lactams and Spirolactams from Aldehydes or Ketones, Acylhydrazines, and 2-(Bromomethyl)acrylate. J Org Chem 2015; 80:12224-33. [DOI: 10.1021/acs.joc.5b02154] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Yanli Xu
- College
of Chemistry and Chemical Engineering, Northwest Normal University, 967
Anning East Road, Lanzhou 730070, P. R. China
| | - Danfeng Huang
- College
of Chemistry and Chemical Engineering, Northwest Normal University, 967
Anning East Road, Lanzhou 730070, P. R. China
| | - Ke-Hu Wang
- College
of Chemistry and Chemical Engineering, Northwest Normal University, 967
Anning East Road, Lanzhou 730070, P. R. China
| | - Junyan Ma
- College
of Chemistry and Chemical Engineering, Northwest Normal University, 967
Anning East Road, Lanzhou 730070, P. R. China
| | - Yingpeng Su
- College
of Chemistry and Chemical Engineering, Northwest Normal University, 967
Anning East Road, Lanzhou 730070, P. R. China
| | - Ying Fu
- College
of Chemistry and Chemical Engineering, Northwest Normal University, 967
Anning East Road, Lanzhou 730070, P. R. China
| | - Yulai Hu
- College
of Chemistry and Chemical Engineering, Northwest Normal University, 967
Anning East Road, Lanzhou 730070, P. R. China
- State
Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, P. R. China
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21
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A facile and mild synthesis of trisubstituted allylic sulfones from Morita-Baylis-Hillman carbonates. Molecules 2015; 20:8213-22. [PMID: 25961162 PMCID: PMC6272667 DOI: 10.3390/molecules20058213] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2015] [Revised: 04/29/2015] [Accepted: 05/04/2015] [Indexed: 11/17/2022] Open
Abstract
An efficient and catalyst-free synthesis of trisubstituted allylic sulfones through an allylic sulfonylation reaction of Morita-Baylis-Hillman (MBH) carbonates with sodium sulfinates has been developed. Under the optimized reaction conditions, a series of trisubstituted allylic sulfones were rapidly prepared in good to excellent yields (71%–99%) with good to high selectivity (Z/E from 79:21 to >99:1). Compared with known synthetic methods, the current protocol features mild reaction temperature, high efficiency and easily available reagents.
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22
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Reddy CR, Mohammed SZ, Kumaraswamy P. A [3 + 2]-annulation approach to tetrasubstituted furans from MBH-carbonates of acetylenic aldehydes via sequential substitution/cycloisomerization. Org Biomol Chem 2015; 13:8310-21. [DOI: 10.1039/c5ob00989h] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
A new organo base-mediated cascade reaction has been developed for the synthesis of uniquely substituted tetrasubstituted furans, 2-furan-3-yl acrylates, starting from MBH-carbonates of acetylenic aldehydes and keto-methylenes.
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Affiliation(s)
- Chada Raji Reddy
- Division of Natural Products Chemistry
- CSIR-Indian Institute of Chemical Technology
- Hyderabad 500 007
- India
- Academy of Scientific and Innovative Research
| | - Siddique Z. Mohammed
- Division of Natural Products Chemistry
- CSIR-Indian Institute of Chemical Technology
- Hyderabad 500 007
- India
- Academy of Scientific and Innovative Research
| | - Paridala Kumaraswamy
- Division of Natural Products Chemistry
- CSIR-Indian Institute of Chemical Technology
- Hyderabad 500 007
- India
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23
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Yao L, Wang CJ. AsymmetricN-Allylic Alkylation of Hydrazones with Morita-Baylis-Hillman Carbonates. Adv Synth Catal 2014. [DOI: 10.1002/adsc.201400790] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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24
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Basavaiah D, Reddy GC, Bharadwaj KC. Less reactive ketones as electrophiles and acrylamides as activated alkenes in intramolecular Baylis–Hillman reaction: facile synthesis of functionalized γ-lactam frameworks. Tetrahedron 2014. [DOI: 10.1016/j.tet.2014.08.045] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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25
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Putaj P, Tichá I, Císařová I, Veselý J. One-Pot Preparation of Chiral Carbacycles from Morita-Baylis-Hillman Carbonates by an Asymmetric Allylic Alkylation/Olefin Metathesis Sequence. European J Org Chem 2014. [DOI: 10.1002/ejoc.201402899] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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26
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Ramachary DB, Venkaiah C, Reddy YV. High-yielding sequential one-pot synthesis of chiral and achiral α-substituted acrylates via a metal-free reductive coupling reaction. Org Biomol Chem 2014; 12:5400-6. [PMID: 24934801 DOI: 10.1039/c4ob00667d] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A general process for the high-yielding synthesis of substituted chiral and achiral α-substituted acrylates was achieved through the sequential one-pot combination of a metal-free reductive coupling reaction followed by an Eschenmoser methylenation. The proline catalyzed reaction of Meldrum's acid, aldehydes and Hantzsch ester followed by methylenation was successful with Eschenmoser's salt in the presence of an alcohol solvent. Herein, we have shown the high-yielding synthesis of privileged building blocks from chiral/achiral α-substituted acrylates and shown them to be very good intermediates in the pharmaceuticals and natural products synthesis.
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