51
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Jain K, Chaudhuri S, Pal K, Das K. The Knoevenagel condensation using quinine as an organocatalyst under solvent-free conditions. NEW J CHEM 2019. [DOI: 10.1039/c8nj04219e] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
An organocatalytic Knoevenagel condensation has been developed for the synthesis of electrophilic alkenes using natural quinine under green reaction conditions.
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Affiliation(s)
- Kavita Jain
- Department of Chemistry
- School of Chemical Sciences and Technology
- Dr Harisingh Gour University
- Sagar
- India
| | - Saikat Chaudhuri
- Department of Chemistry
- Indian Institute of Science Education and Research (IISER) Bhopal
- Bhopal
- India
| | - Kuntal Pal
- Department of Chemistry
- University of Calcutta
- Kolkata 700 009
- India
| | - Kalpataru Das
- Department of Chemistry
- School of Chemical Sciences and Technology
- Dr Harisingh Gour University
- Sagar
- India
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52
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Okada M, Kaneko K, Yamanaka M, Shirakawa S. BINOL-derived bifunctional sulfide catalysts for asymmetric synthesis of 3,3-disubstituted phthalides via bromolactonization. Org Biomol Chem 2019; 17:3747-3751. [DOI: 10.1039/c9ob00417c] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
An efficient enantioselective synthesis of 3,3-disubstituted phthalides possessing a chiral quaternary carbon center was achieved via catalytic asymmetric bromolactonization using BINOL-derived bifunctional sulfide catalysts.
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Affiliation(s)
- Megumi Okada
- Department of Environmental Science
- Graduate School of Fisheries and Environmental Sciences
- Nagasaki University
- Nagasaki 852-8521
- Japan
| | - Kazuma Kaneko
- Department of Chemistry and Research Center for Smart Molecules
- Faculty of Science
- Rikkyo University
- Tokyo 171-8501
- Japan
| | - Masahiro Yamanaka
- Department of Chemistry and Research Center for Smart Molecules
- Faculty of Science
- Rikkyo University
- Tokyo 171-8501
- Japan
| | - Seiji Shirakawa
- Department of Environmental Science
- Graduate School of Fisheries and Environmental Sciences
- Nagasaki University
- Nagasaki 852-8521
- Japan
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53
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Yousefi R, Struble TJ, Payne JL, Vishe M, Schley ND, Johnston JN. Catalytic, Enantioselective Synthesis of Cyclic Carbamates from Dialkyl Amines by CO 2-Capture: Discovery, Development, and Mechanism. J Am Chem Soc 2018; 141:618-625. [PMID: 30582326 DOI: 10.1021/jacs.8b11793] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Cyclic carbamates are a common feature of small-molecule therapeutics, offering a constrained hydrogen bond acceptor that is both polar and sterically small. Methods for their preparation most often focus first on amino alcohol synthesis and then reaction with phosgene or its equivalent. This report describes an enantioselective synthesis of cyclic carbamates in which carbon dioxide engages an unsaturated basic amine, facilitated by a bifunctional organocatalyst designed to stabilize a carbamic acid intermediate while activating it toward subsequent enantioselective carbon-oxygen bond formation. Six-membered cyclic carbamates are prepared in good yield with high levels of enantioselection, as constrained 1,3-amino alcohols featuring a chiral tertiary alcohol carbon. Spectroscopic analysis (NMR, DOSY) of various substrate-reagent combinations provides insight into the dominant species under the reaction conditions. Two peculiar requirements were identified to achieve highest consistency: a "Goldilocks" amount of water and the use of a noncrystalline form of the ligand. These atypical features of the final protocol notwithstanding, a diverse range of products could be prepared. Their functionalizations illustrate the versatility of the carbamates as precursors to enantioenriched small molecules.
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Affiliation(s)
- Roozbeh Yousefi
- Department of Chemistry and Vanderbilt Institute of Chemical Biology , Vanderbilt University , Nashville , Tennessee 37235 , United States
| | - Thomas J Struble
- Department of Chemistry and Vanderbilt Institute of Chemical Biology , Vanderbilt University , Nashville , Tennessee 37235 , United States
| | - Jenna L Payne
- Department of Chemistry and Vanderbilt Institute of Chemical Biology , Vanderbilt University , Nashville , Tennessee 37235 , United States
| | - Mahesh Vishe
- Department of Chemistry and Vanderbilt Institute of Chemical Biology , Vanderbilt University , Nashville , Tennessee 37235 , United States
| | - Nathan D Schley
- Department of Chemistry and Vanderbilt Institute of Chemical Biology , Vanderbilt University , Nashville , Tennessee 37235 , United States
| | - Jeffrey N Johnston
- Department of Chemistry and Vanderbilt Institute of Chemical Biology , Vanderbilt University , Nashville , Tennessee 37235 , United States
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54
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Seidl FJ, Min C, Lopez JA, Burns NZ. Catalytic Regio- and Enantioselective Haloazidation of Allylic Alcohols. J Am Chem Soc 2018; 140:15646-15650. [PMID: 30403852 DOI: 10.1021/jacs.8b10799] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Herein we report a highly regio- and stereoselective haloazidation of allylic alcohols. This enantioselective reaction uses readily available materials and can be performed on a variety of alkyl-substituted alkenes and can incorporate either bromine or chlorine as the electrophilic halogen component. Both halide and azido groups of the resulting products can be transformed into valuable building blocks with complete stereospecificity. The first example of an enantioselective 1,4-haloazidation of a conjugated diene is reported as well as its application to a concise synthesis of an aza-sugar.
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Affiliation(s)
- Frederick J Seidl
- Department of Chemistry , Stanford University , Stanford , California 94305 , United States
| | - Chang Min
- Department of Chemistry , Stanford University , Stanford , California 94305 , United States
| | - Jovan A Lopez
- Department of Chemistry , Stanford University , Stanford , California 94305 , United States
| | - Noah Z Burns
- Department of Chemistry , Stanford University , Stanford , California 94305 , United States
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55
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Nishiyori R, Tsuchihashi A, Mochizuki A, Kaneko K, Yamanaka M, Shirakawa S. Design of Chiral Bifunctional Dialkyl Sulfide Catalysts for Regio-, Diastereo-, and Enantioselective Bromolactonization. Chemistry 2018; 24:16747-16752. [PMID: 30203864 DOI: 10.1002/chem.201803703] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2018] [Revised: 09/10/2018] [Indexed: 11/09/2022]
Abstract
Although a wide variety of chiral organocatalysts have been developed for asymmetric transformations, effective chiral dialkyl sulfide organocatalysts remain relatively rare and under-developed, despite the potential utility of dialkyl sulfide catalysts. Herein, we report the development of chiral bifunctional dialkyl sulfide catalysts possessing a urea moiety for regio-, diastereo-, and enantioselective bromolactonization. The importance of the bifunctional design of chiral sulfide catalysts was clearly demonstrated in the present work. The roles of both the sulfide and urea moieties of the catalyst were clarified based on the results of experimental and theoretical investigation.
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Affiliation(s)
- Ryuichi Nishiyori
- Department of Environmental Science, Graduate School of Fisheries and Environmental Sciences, Nagasaki University, 1-14 Bunkyo-machi, Nagasaki, 852-8521, Japan
| | - Ayano Tsuchihashi
- Department of Environmental Science, Graduate School of Fisheries and Environmental Sciences, Nagasaki University, 1-14 Bunkyo-machi, Nagasaki, 852-8521, Japan
| | - Ayaka Mochizuki
- Department of Chemistry and Research Center for Smart Molecules, Faculty of Science, Rikkyo University, 3-34-1, Nishi-Ikebukuro, Toshima-ku, Tokyo, 171-8501, Japan
| | - Kazuma Kaneko
- Department of Chemistry and Research Center for Smart Molecules, Faculty of Science, Rikkyo University, 3-34-1, Nishi-Ikebukuro, Toshima-ku, Tokyo, 171-8501, Japan
| | - Masahiro Yamanaka
- Department of Chemistry and Research Center for Smart Molecules, Faculty of Science, Rikkyo University, 3-34-1, Nishi-Ikebukuro, Toshima-ku, Tokyo, 171-8501, Japan
| | - Seiji Shirakawa
- Department of Environmental Science, Graduate School of Fisheries and Environmental Sciences, Nagasaki University, 1-14 Bunkyo-machi, Nagasaki, 852-8521, Japan
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56
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Einaru S, Shitamichi K, Nagano T, Matsumoto A, Asano K, Matsubara S. trans
‐Cyclooctenes as Halolactonization Catalysts. Angew Chem Int Ed Engl 2018; 57:13863-13867. [DOI: 10.1002/anie.201808320] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2018] [Revised: 08/22/2018] [Indexed: 02/01/2023]
Affiliation(s)
- Shunsuke Einaru
- Department of Material ChemistryGraduate School of EngineeringKyoto University, Kyotodaigaku-katsura, Nishikyo Kyoto 615-8510 Japan
| | - Kenta Shitamichi
- Department of Material ChemistryGraduate School of EngineeringKyoto University, Kyotodaigaku-katsura, Nishikyo Kyoto 615-8510 Japan
| | - Tagui Nagano
- Department of Material ChemistryGraduate School of EngineeringKyoto University, Kyotodaigaku-katsura, Nishikyo Kyoto 615-8510 Japan
| | - Akira Matsumoto
- Department of Material ChemistryGraduate School of EngineeringKyoto University, Kyotodaigaku-katsura, Nishikyo Kyoto 615-8510 Japan
| | - Keisuke Asano
- Department of Material ChemistryGraduate School of EngineeringKyoto University, Kyotodaigaku-katsura, Nishikyo Kyoto 615-8510 Japan
| | - Seijiro Matsubara
- Department of Material ChemistryGraduate School of EngineeringKyoto University, Kyotodaigaku-katsura, Nishikyo Kyoto 615-8510 Japan
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57
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Michelet B, Carreyre H, Lecornué F, Mingot A, Thibaudeau S. Superelectrophilic activation in superacid HF/SbF5: Expanding molecular diversity in nitrogen-containing compounds series by fluorination. J Fluor Chem 2018. [DOI: 10.1016/j.jfluchem.2018.04.017] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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58
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Li SL, Yang C, Wu Q, Zheng HL, Li X, Cheng JP. Atroposelective Catalytic Asymmetric Allylic Alkylation Reaction for Axially Chiral Anilides with Achiral Morita-Baylis-Hillman Carbonates. J Am Chem Soc 2018; 140:12836-12843. [PMID: 30226765 DOI: 10.1021/jacs.8b06014] [Citation(s) in RCA: 90] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
A highly efficient method to access axially chiral anilides through asymmetric allylic alkylation reaction with achiral Morita-Baylis-Hillman carbonates by using a biscinchona alkaloid catalyst was reported. Through the atroposelective approach, a broad range of axially chiral anilide products with different acyl groups, such as substituted phenyl, naphthyl, alkyl, enyl, styryl, and benzyl, were generated with very good yields, moderate to excellent cis: trans ratios, and good to excellent enantioselectivities. The reaction can be scaled up, and the synthetic utility of axially chiral anilides was proved by transformations. Moreover, the linear free energy relationship analysis was introduced to investigate the reaction.
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Affiliation(s)
- Shou-Lei Li
- State Key Laboratory of Elemento-Organic Chemistry, Collaborative Innovation Center of Chemical Science and Engineering, College of Chemistry , Nankai University , Tianjin 300071 , P. R. China
| | - Chen Yang
- State Key Laboratory of Elemento-Organic Chemistry, Collaborative Innovation Center of Chemical Science and Engineering, College of Chemistry , Nankai University , Tianjin 300071 , P. R. China
| | - Quan Wu
- State Key Laboratory of Elemento-Organic Chemistry, Collaborative Innovation Center of Chemical Science and Engineering, College of Chemistry , Nankai University , Tianjin 300071 , P. R. China
| | - Han-Liang Zheng
- State Key Laboratory of Elemento-Organic Chemistry, Collaborative Innovation Center of Chemical Science and Engineering, College of Chemistry , Nankai University , Tianjin 300071 , P. R. China
| | - Xin Li
- State Key Laboratory of Elemento-Organic Chemistry, Collaborative Innovation Center of Chemical Science and Engineering, College of Chemistry , Nankai University , Tianjin 300071 , P. R. China
| | - Jin-Pei Cheng
- State Key Laboratory of Elemento-Organic Chemistry, Collaborative Innovation Center of Chemical Science and Engineering, College of Chemistry , Nankai University , Tianjin 300071 , P. R. China
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59
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Einaru S, Shitamichi K, Nagano T, Matsumoto A, Asano K, Matsubara S. trans‐Cyclooctenes as Halolactonization Catalysts. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201808320] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Shunsuke Einaru
- Department of Material ChemistryGraduate School of EngineeringKyoto University, Kyotodaigaku-katsura, Nishikyo Kyoto 615-8510 Japan
| | - Kenta Shitamichi
- Department of Material ChemistryGraduate School of EngineeringKyoto University, Kyotodaigaku-katsura, Nishikyo Kyoto 615-8510 Japan
| | - Tagui Nagano
- Department of Material ChemistryGraduate School of EngineeringKyoto University, Kyotodaigaku-katsura, Nishikyo Kyoto 615-8510 Japan
| | - Akira Matsumoto
- Department of Material ChemistryGraduate School of EngineeringKyoto University, Kyotodaigaku-katsura, Nishikyo Kyoto 615-8510 Japan
| | - Keisuke Asano
- Department of Material ChemistryGraduate School of EngineeringKyoto University, Kyotodaigaku-katsura, Nishikyo Kyoto 615-8510 Japan
| | - Seijiro Matsubara
- Department of Material ChemistryGraduate School of EngineeringKyoto University, Kyotodaigaku-katsura, Nishikyo Kyoto 615-8510 Japan
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60
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Cao YM, Lentz D, Christmann M. Synthesis of Enantioenriched Bromohydrins via Divergent Reactions of Racemic Intermediates from Anchimeric Oxygen Borrowing. J Am Chem Soc 2018; 140:10677-10681. [PMID: 30099869 DOI: 10.1021/jacs.8b06432] [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
We report a chiral phosphoric acid catalyzed bromocyclization/regiodivergent reaction of racemic intermediates sequence, which is enabled by anchimeric oxygen borrowing. Different types of alkenes are applicable, and both enantiomers of the bromohydrin products were obtained in generally excellent yields and enantioselectivities. In addition, an example of enantioconvergent synthesis from the two isomeric products is presented.
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Affiliation(s)
- Yi-Ming Cao
- Institute of Chemistry and Biochemistry , Freie Universität Berlin , Takustraße 3 , 14195 Berlin , Germany
| | - Dieter Lentz
- Institute of Chemistry and Biochemistry , Freie Universität Berlin , Takustraße 3 , 14195 Berlin , Germany
| | - Mathias Christmann
- Institute of Chemistry and Biochemistry , Freie Universität Berlin , Takustraße 3 , 14195 Berlin , Germany
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61
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Liang XW, Chen X, Zhang Z, You SL. Catalytic asymmetric brominative dearomatization reaction of benzofurans. CHINESE CHEM LETT 2018. [DOI: 10.1016/j.cclet.2018.01.039] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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62
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Yadav A, Banerjee J, Arupula SK, Mobin SM, Samanta S. Lewis-Base-Catalyzed Domino Reaction of Morita-Baylis-Hillman Carbonates of Isatins with Enolizable Cyclic Carbonyl Compounds: Stereoselective Access to Spirooxindole-Pyrans. ASIAN J ORG CHEM 2018. [DOI: 10.1002/ajoc.201800240] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Anubha Yadav
- Discipline of Chemistry; Indian Institute of Technology Indore; Simrol 453552 Indore India
| | - Joyanta Banerjee
- Discipline of Chemistry; Indian Institute of Technology Indore; Simrol 453552 Indore India
| | - Sanjeeva K. Arupula
- Discipline of Chemistry; Indian Institute of Technology Indore; Simrol 453552 Indore India
| | - Shaikh M. Mobin
- Discipline of Chemistry; Indian Institute of Technology Indore; Simrol 453552 Indore India
| | - Sampak Samanta
- Discipline of Chemistry; Indian Institute of Technology Indore; Simrol 453552 Indore India
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63
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Fricke C, Wilking M, Daniliuc CG, Hennecke U. An Enantioselective Iodolactonization/Cross-Coupling Protocol for the Synthesis of Highly Substituted Enol Lactones. European J Org Chem 2018. [DOI: 10.1002/ejoc.201800642] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Christoph Fricke
- Organisch-Chemisches Institut; Westfälische Wilhelms-Universität Münster; Corrensstr. 40 48149 Münster Germany
| | - Michael Wilking
- Organisch-Chemisches Institut; Westfälische Wilhelms-Universität Münster; Corrensstr. 40 48149 Münster Germany
| | - Constantin G. Daniliuc
- Organisch-Chemisches Institut; Westfälische Wilhelms-Universität Münster; Corrensstr. 40 48149 Münster Germany
| | - Ulrich Hennecke
- Organisch-Chemisches Institut; Westfälische Wilhelms-Universität Münster; Corrensstr. 40 48149 Münster Germany
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64
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Jiang X, Liu S, Yang S, Jing M, Xu L, Yu P, Wang Y, Yeung YY. Enantioselective Bromolactonization of Deactivated Olefinic Acids. Org Lett 2018; 20:3259-3262. [DOI: 10.1021/acs.orglett.8b01125] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Xiaojian Jiang
- Institute of New Drug Research and Guangzhou Key Laboratory of Innovative Chemical Drug Research in Cardiocerebrovascular Diseases, Jinan University College of Pharmacy, Guangzhou 510632, People’s Republic of China
| | - Shenghui Liu
- Institute of New Drug Research and Guangzhou Key Laboratory of Innovative Chemical Drug Research in Cardiocerebrovascular Diseases, Jinan University College of Pharmacy, Guangzhou 510632, People’s Republic of China
| | - Si Yang
- Institute of New Drug Research and Guangzhou Key Laboratory of Innovative Chemical Drug Research in Cardiocerebrovascular Diseases, Jinan University College of Pharmacy, Guangzhou 510632, People’s Republic of China
| | - Mei Jing
- Institute of New Drug Research and Guangzhou Key Laboratory of Innovative Chemical Drug Research in Cardiocerebrovascular Diseases, Jinan University College of Pharmacy, Guangzhou 510632, People’s Republic of China
| | - Lipeng Xu
- Institute of New Drug Research and Guangzhou Key Laboratory of Innovative Chemical Drug Research in Cardiocerebrovascular Diseases, Jinan University College of Pharmacy, Guangzhou 510632, People’s Republic of China
| | - Pei Yu
- Institute of New Drug Research and Guangzhou Key Laboratory of Innovative Chemical Drug Research in Cardiocerebrovascular Diseases, Jinan University College of Pharmacy, Guangzhou 510632, People’s Republic of China
| | - Yuqiang Wang
- Institute of New Drug Research and Guangzhou Key Laboratory of Innovative Chemical Drug Research in Cardiocerebrovascular Diseases, Jinan University College of Pharmacy, Guangzhou 510632, People’s Republic of China
| | - Ying-Yeung Yeung
- Department of Chemistry, The Chinese University of Hong Kong, Shatin, NT, Hong Kong, China
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65
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Liu X, Liang Y, Ji J, Luo J, Zhao X. Chiral Selenide-Catalyzed Enantioselective Allylic Reaction and Intermolecular Difunctionalization of Alkenes: Efficient Construction of C-SCF3 Stereogenic Molecules. J Am Chem Soc 2018; 140:4782-4786. [DOI: 10.1021/jacs.8b01513] [Citation(s) in RCA: 97] [Impact Index Per Article: 16.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Xiang Liu
- Institute of Organic Chemistry & MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, P. R. China
| | - Yaoyu Liang
- Institute of Organic Chemistry & MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, P. R. China
| | - Jieying Ji
- Institute of Organic Chemistry & MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, P. R. China
| | - Jie Luo
- Institute of Organic Chemistry & MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, P. R. China
| | - Xiaodan Zhao
- Institute of Organic Chemistry & MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, P. R. China
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66
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Chan YC, Yeung YY. Halogen Bond Catalyzed Bromocarbocyclization. Angew Chem Int Ed Engl 2018; 57:3483-3487. [DOI: 10.1002/anie.201800261] [Citation(s) in RCA: 69] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2018] [Indexed: 01/13/2023]
Affiliation(s)
- Yuk-Cheung Chan
- Department of Chemistry; The Chinese University of Hong Kong, Shatin, N.T.; Hong Kong China
| | - Ying-Yeung Yeung
- Department of Chemistry; The Chinese University of Hong Kong, Shatin, N.T.; Hong Kong China
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67
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Affiliation(s)
- Yuk-Cheung Chan
- Department of Chemistry; The Chinese University of Hong Kong, Shatin, N.T.; Hong Kong China
| | - Ying-Yeung Yeung
- Department of Chemistry; The Chinese University of Hong Kong, Shatin, N.T.; Hong Kong China
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68
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Tan X, Pan H, Tian H, Shi Y. Phosphine oxide-Sc(OTf)3 catalyzed enantioselective bromoaminocyclization of tri-substituted allyl N-tosylcarbamates. Sci China Chem 2018. [DOI: 10.1007/s11426-017-9192-x] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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69
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Salehi Marzijarani N, Yousefi R, Jaganathan A, Ashtekar KD, Jackson JE, Borhan B. Absolute and relative facial selectivities in organocatalytic asymmetric chlorocyclization reactions. Chem Sci 2018; 9:2898-2908. [PMID: 29719676 PMCID: PMC5896375 DOI: 10.1039/c7sc04430e] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2017] [Accepted: 12/24/2017] [Indexed: 12/16/2022] Open
Abstract
For four related 1,1-disubstituted olefins, (DHQD)2PHAL-catalyzed asymmetric chlorocyclization delivers Cl+ uniformly to one π face, but cyclizes with strong but differing net syn vs. anti addition.
Though (DHQD)2PHAL-catalyzed chlorocyclizations of 1,1-disubstituted olefins show useful (and in some cases, reversible) asymmetric induction, stereochemically complete descriptions of these alkene additions have remained largely unknown. Herein, based on a combination of NMR, derivative, isotope labeling, and computational studies, we present detailed stereochemical analyses of chlorocyclizations of nucleophile-tethered 1,1-disubstituted styryl systems. The selectivities of the two asymmetric bond-forming processes, namely electrophilic chlorine attack and nucleophilic ring closure, are thus mapped out independently. Under the established optimal conditions, four related chlorocyclizations were subjected to this analysis. All showed a strong preference for Cl+ delivery from the same face of the alkene. However, depending on reaction conditions and substrate identity (carboxylic acid, amide or carbamate), the internal nucleophiles may close with a strong net preference for either syn or anti addition relative to the Cl atom. Studies of both uncatalyzed and (DHQD)2PHAL-catalyzed processes place new boundary conditions on the role of the catalyst in these reactions.
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Affiliation(s)
| | - Roozbeh Yousefi
- Department of Chemistry , Michigan State University , East Lansing , Michigan 48824 , USA . ;
| | - Arvind Jaganathan
- Dow AgroSciences LLC , 9330 Zionsville Road , Indianapolis , IN 46268 , USA
| | - Kumar Dilip Ashtekar
- Department of Chemistry , Michigan State University , East Lansing , Michigan 48824 , USA . ;
| | - James E Jackson
- Department of Chemistry , Michigan State University , East Lansing , Michigan 48824 , USA . ;
| | - Babak Borhan
- Department of Chemistry , Michigan State University , East Lansing , Michigan 48824 , USA . ;
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70
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Das P, Takada M, Tokunaga E, Saito N, Shibata N. Synthesis of pyridine trans-tetrafluoro-λ6-sulfane derivatives via radical addition. Org Chem Front 2018. [DOI: 10.1039/c7qo00994a] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Pyridine-trans-SF4-alkenes or -alkanes have been synthesized for the first time via the radical addition reactions of pyridine-trans-SF4Cl to alkynes or alkenes in good to high yields.
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Affiliation(s)
- Prajwalita Das
- Department of Nanopharmaceutical Sciences
- Nagoya Institute of Technology
- Nagoya 466-8555
- Japan
| | - Masahiro Takada
- Department of Nanopharmaceutical Sciences
- Nagoya Institute of Technology
- Nagoya 466-8555
- Japan
| | - Etsuko Tokunaga
- Department of Nanopharmaceutical Sciences
- Nagoya Institute of Technology
- Nagoya 466-8555
- Japan
| | | | - Norio Shibata
- Department of Nanopharmaceutical Sciences
- Nagoya Institute of Technology
- Nagoya 466-8555
- Japan
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71
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Ma Z, Chen C. Natural products as inspiration for the development of new synthetic methods. J CHIN CHEM SOC-TAIP 2018; 65:43-59. [PMID: 29430058 PMCID: PMC5800783 DOI: 10.1002/jccs.201700134] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
Natural products have played an important role in shaping modern synthetic organic chemistry. In particular, their complex molecular skeletons have stimulated the development of many new synthetic methods. We highlight in this article some recent examples of synthetic design inspired by the biosynthesis of natural products.
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Affiliation(s)
- Zhiqiang Ma
- Department of Biochemistry, The University of Texas Southwestern Medical Center, 5323 Harry Hines Boulevard, Dallas, Texas 75390-9038, USA
- School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou, P. R. China
| | - Chuo Chen
- Department of Biochemistry, The University of Texas Southwestern Medical Center, 5323 Harry Hines Boulevard, Dallas, Texas 75390-9038, USA
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72
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Veiga N, Ramos JC, Seoane G, Brovetto M. Tetrahydrofuran Formation through Intramolecular Iodoetherification: Mechanistic Insights into the Neighbouring-Group Participation of an Ester. European J Org Chem 2017. [DOI: 10.1002/ejoc.201700494] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Nicolás Veiga
- Química Inorgánica; Departamento Estrella Campos; Facultad de Química; Universidad de la República; General Flores 2124 11800 Montevideo Uruguay
| | - Juan C. Ramos
- Departamento de Química Orgánica; Laboratorio de Síntesis Orgánica; Facultad de Química; Universidad de la República; General Flores 2124 11800 Montevideo Uruguay
| | - Gustavo Seoane
- Departamento de Química Orgánica; Laboratorio de Síntesis Orgánica; Facultad de Química; Universidad de la República; General Flores 2124 11800 Montevideo Uruguay
| | - Margarita Brovetto
- Departamento de Química Orgánica; Laboratorio de Síntesis Orgánica; Facultad de Química; Universidad de la República; General Flores 2124 11800 Montevideo Uruguay
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73
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Yu SN, Li YL, Deng J. Enantioselective Synthesis of 2-Bromomethyl Indolines via BINAP(S)-Catalyzed Bromoaminocyclization of Allyl Aniline. Adv Synth Catal 2017. [DOI: 10.1002/adsc.201700106] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Sheng-Nan Yu
- School of Pharmaceutical Science and Technology; Tianjin University; Tianjin 300072 People's Republic of China
| | - Yin-Long Li
- School of Pharmaceutical Science and Technology; Tianjin University; Tianjin 300072 People's Republic of China
| | - Jun Deng
- School of Pharmaceutical Science and Technology; Tianjin University; Tianjin 300072 People's Republic of China
- School of Pharmaceutical Sciences and Innovative Drug Research Centre; Chongqing University; 55 Daxuecheng South Road, Shapingba Chongqing 401331 People's Republic of China
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74
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Frolova LL, Sudarikov DV, Alekseev IN, Banina OA, Slepukhin PA, Kutchin AV. Synthesis of new enantiomerically pure β-amino alcohols of the pinane series. RUSSIAN JOURNAL OF ORGANIC CHEMISTRY 2017. [DOI: 10.1134/s1070428017030046] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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75
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Yu YM, Huang YN, Deng J. Catalytic Asymmetric Chlorocyclization of 2-Vinylphenylcarbamates for Synthesis of 1,4-Dihydro-2H-3,1-benzoxazin-2-one Derivatives. Org Lett 2017; 19:1224-1227. [DOI: 10.1021/acs.orglett.7b00272] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Yan-Min Yu
- School of Pharmaceutical Science and Technology, Key Laboratory for Modern Drug Delivery & High-Efficiency, Tianjin University, Tianjin 300072, China
| | - Ya-Nan Huang
- School of Pharmaceutical Science and Technology, Key Laboratory for Modern Drug Delivery & High-Efficiency, Tianjin University, Tianjin 300072, China
| | - Jun Deng
- School of Pharmaceutical Science and Technology, Key Laboratory for Modern Drug Delivery & High-Efficiency, Tianjin University, Tianjin 300072, China
- School
of Pharmaceutical Sciences and Innovative Drug Research Centre, Chongqing University, 55 Daxuecheng South Road, Shapingba, Chongqing 401331, China
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76
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Soltanzadeh B, Jaganathan A, Yi Y, Yi H, Staples RJ, Borhan B. Highly Regio- and Enantioselective Vicinal Dihalogenation of Allyl Amides. J Am Chem Soc 2017; 139:2132-2135. [PMID: 28112919 PMCID: PMC7790169 DOI: 10.1021/jacs.6b09203] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
We report a highly regio-, diastereo- and enantioselective vicinal dihalogenation of allyl amides. E- and Z-alkenes with both aryl and alkyl substituents were compatible with this chemistry. This is the result of exquisite catalyst controlled regioselectivity enabling use of electronically unbiased substrates. The reaction employs commercially available catalysts and halenium sources along with cheap inorganic halide salts to affect this transformation. A preliminary effort to extend this chemistry to heterodihalogenation is also presented.
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Affiliation(s)
- Bardia Soltanzadeh
- Department of Chemistry, Michigan State University, East Lansing, Michigan 48824, United States
| | - Arvind Jaganathan
- Dow Agrosciences LLC, 9330 Zionsville Road, Indianapolis, Indiana 46268, United States
| | - Yi Yi
- Department of Chemistry, Michigan State University, East Lansing, Michigan 48824, United States
| | - Hajoon Yi
- Department of Chemistry, Michigan State University, East Lansing, Michigan 48824, United States
| | - Richard J. Staples
- Department of Chemistry, Michigan State University, East Lansing, Michigan 48824, United States
| | - Babak Borhan
- Department of Chemistry, Michigan State University, East Lansing, Michigan 48824, United States
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77
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Li J, Li Z, Zhang X, Xu B, Shi Y. Catalytic enantioselective bromohydroxylation of aryl olefins with flexible functionalities. Org Chem Front 2017. [DOI: 10.1039/c6qo00636a] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A highly enantioselective bromohydroxylation of aryl olefins with flexible functionalities has been achieved with (DHQD)2PHAL as a catalyst and H2O as a nucleophile, giving a variety of optically active bromohydrins with up to 98% ee.
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Affiliation(s)
- Jing Li
- Beijing National Laboratory for Molecular Sciences
- CAS Key Laboratory of Molecular Recognition and Function
- Institute of Chemistry
- Chinese Academy of Sciences
- Beijing 100190
| | - Zequan Li
- Beijing National Laboratory for Molecular Sciences
- CAS Key Laboratory of Molecular Recognition and Function
- Institute of Chemistry
- Chinese Academy of Sciences
- Beijing 100190
| | - Xun Zhang
- Beijing National Laboratory for Molecular Sciences
- CAS Key Laboratory of Molecular Recognition and Function
- Institute of Chemistry
- Chinese Academy of Sciences
- Beijing 100190
| | - Bing Xu
- Beijing National Laboratory for Molecular Sciences
- CAS Key Laboratory of Molecular Recognition and Function
- Institute of Chemistry
- Chinese Academy of Sciences
- Beijing 100190
| | - Yian Shi
- Beijing National Laboratory for Molecular Sciences
- CAS Key Laboratory of Molecular Recognition and Function
- Institute of Chemistry
- Chinese Academy of Sciences
- Beijing 100190
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78
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Wang H, Huang L, Cao X, Liang D, Peng AY. Synthesis of phostones via DABCO-catalyzed bromocyclization of alkenylphosphonic acid monoesters. Org Biomol Chem 2017; 15:7396-7403. [DOI: 10.1039/c7ob01436h] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A series of phostones were synthesized via DABCO-catalyzed bromocyclization reaction under mild conditions with high endo regioselectivity. The obtained diastereomers were separated and the relative configurations were confirmed.
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Affiliation(s)
- Haiyang Wang
- School of Chemistry
- Sun Yat-sen University
- Guangzhou
- China
| | - Liye Huang
- School of Chemistry
- Sun Yat-sen University
- Guangzhou
- China
| | - Xiaohui Cao
- School of Chemistry
- Sun Yat-sen University
- Guangzhou
- China
| | - Dacheng Liang
- School of Chemistry
- Sun Yat-sen University
- Guangzhou
- China
| | - Ai-Yun Peng
- School of Chemistry
- Sun Yat-sen University
- Guangzhou
- China
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79
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Wang Z, Lin L, Zhou P, Liu X, Feng X. Chiral N,N′-dioxide-Sc(NTf2)3 complex-catalyzed asymmetric bromoamination of chalones with N-bromosuccinimide as both bromine and amide source. Chem Commun (Camb) 2017; 53:3462-3465. [DOI: 10.1039/c7cc00470b] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
A chiral N,N′-dioxide-Sc(NTf2)3 complex catalytic system has been developed to catalyze the asymmetric bromoamination reaction of chalones with N-bromosuccinimide.
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Affiliation(s)
- Zhengmeng Wang
- Key Laboratory of Green Chemistry & Technology
- Ministry of Education
- College of Chemistry
- Sichuan University
- Chengdu 610064
| | - Lili Lin
- Key Laboratory of Green Chemistry & Technology
- Ministry of Education
- College of Chemistry
- Sichuan University
- Chengdu 610064
| | - Pengfei Zhou
- Key Laboratory of Green Chemistry & Technology
- Ministry of Education
- College of Chemistry
- Sichuan University
- Chengdu 610064
| | - Xiaohua Liu
- Key Laboratory of Green Chemistry & Technology
- Ministry of Education
- College of Chemistry
- Sichuan University
- Chengdu 610064
| | - Xiaoming Feng
- Key Laboratory of Green Chemistry & Technology
- Ministry of Education
- College of Chemistry
- Sichuan University
- Chengdu 610064
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80
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Hennecke U, Müller CH, Daniliuc CG. Synthesis of Chiral Heterocyclic N
-Haloamides and -imides and Their Applications as Halogenating Agents and Mechanistic Probes. European J Org Chem 2016. [DOI: 10.1002/ejoc.201601159] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Ulrich Hennecke
- Organisch-Chemisches Institut; Westfälische Wilhelms-Universität Münster; Corrensstr. 40 48149 Münster Germany
| | - Christian H. Müller
- Organisch-Chemisches Institut; Westfälische Wilhelms-Universität Münster; Corrensstr. 40 48149 Münster Germany
| | - Constantin G. Daniliuc
- Organisch-Chemisches Institut; Westfälische Wilhelms-Universität Münster; Corrensstr. 40 48149 Münster Germany
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81
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Wilking M, Daniliuc CG, Hennecke U. Monomeric Cinchona Alkaloid-Based Catalysts for Highly Enantioselective Bromolactonisation of Alkynes. Chemistry 2016; 22:18601-18607. [DOI: 10.1002/chem.201604003] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2016] [Indexed: 01/14/2023]
Affiliation(s)
- Michael Wilking
- Organisch-Chemisches Institut; Westfälische Wilhelms-Universität Münster; Correnstraße 40 48149 Münster Germany
| | - Constantin G. Daniliuc
- Organisch-Chemisches Institut; Westfälische Wilhelms-Universität Münster; Correnstraße 40 48149 Münster Germany
| | - Ulrich Hennecke
- Organisch-Chemisches Institut; Westfälische Wilhelms-Universität Münster; Correnstraße 40 48149 Münster Germany
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82
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Denmark SE, Ryabchuk P, Burk MT, Gilbert BB. Toward Catalytic, Enantioselective Chlorolactonization of 1,2-Disubstituted Styrenyl Carboxylic Acids. J Org Chem 2016; 81:10411-10423. [PMID: 27555101 PMCID: PMC5100718 DOI: 10.1021/acs.joc.6b01455] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2016] [Indexed: 01/10/2023]
Abstract
An investigation into the use of Lewis base catalysis for the enantioselective chlorolactonization of 1,2-disubstituted alkenoic acids is described. Two mechanistically distinct reaction pathways for catalytic chlorolactonization have been identified. Mechanistic investigation revealed that tertiary amines predominately operate as Brønsted rather than Lewis bases. Two potential modes of activation have been identified that involve donation of electron density of the carboxylate to the C═C bond as well hydrogen bonding to the chlorinating agent. Sulfur- and selenium-based additives operate under Lewis base catalysis; however, due to the instability of the intermediate benzylic chloriranium ion, chlorolactonization suffers from low chemo-, diastereo-, and enantioselectivities. Independent generation of the benzylic chloriranium ion shows that it is in equilibrium with an open cation, which leads to low specificities in the nucleophilic capture of the intermediate.
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Affiliation(s)
| | - Pavel Ryabchuk
- Department
of Chemistry University of Illinois 600 South Mathews Avenue Urbana, Illinois 61801, United States
| | - Matthew T. Burk
- Department
of Chemistry University of Illinois 600 South Mathews Avenue Urbana, Illinois 61801, United States
| | - Bradley B. Gilbert
- Department
of Chemistry University of Illinois 600 South Mathews Avenue Urbana, Illinois 61801, United States
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83
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Liang XW, Zheng C, You SL. Dearomatization through Halofunctionalization Reactions. Chemistry 2016; 22:11918-33. [DOI: 10.1002/chem.201600885] [Citation(s) in RCA: 117] [Impact Index Per Article: 14.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2016] [Indexed: 11/12/2022]
Affiliation(s)
- Xiao-Wei Liang
- State Key Laboratory of Organometallic Chemistry; Shanghai Institute of Organic Chemistry; Chinese Academy of Sciences; 345 Lingling Lu Shanghai 200032 P. R. China
| | - Chao Zheng
- State Key Laboratory of Organometallic Chemistry; Shanghai Institute of Organic Chemistry; Chinese Academy of Sciences; 345 Lingling Lu Shanghai 200032 P. R. China
| | - Shu-Li You
- State Key Laboratory of Organometallic Chemistry; Shanghai Institute of Organic Chemistry; Chinese Academy of Sciences; 345 Lingling Lu Shanghai 200032 P. R. China
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84
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Liang XW, Zheng C, You SL. Catalytic Asymmetric Chlorinative Dearomatization Reaction of Benzofurans. Adv Synth Catal 2016. [DOI: 10.1002/adsc.201501184] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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85
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Ke Z, Wong YC, See JY, Yeung YY. Electrophilic Bromolactonization of Cyclopropyl Carboxylic Acids Using Lewis Basic Sulfide Catalyst. Adv Synth Catal 2016. [DOI: 10.1002/adsc.201500999] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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86
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Chung WJ, Vanderwal CD. Stereoselective Halogenation in Natural Product Synthesis. Angew Chem Int Ed Engl 2016; 55:4396-434. [PMID: 26833878 PMCID: PMC6028003 DOI: 10.1002/anie.201506388] [Citation(s) in RCA: 197] [Impact Index Per Article: 24.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2015] [Revised: 08/27/2015] [Indexed: 01/23/2023]
Abstract
At last count, nearly 5000 halogenated natural products have been discovered. In approximately half of these compounds, the carbon atom to which the halogen is bound is sp(3) -hybridized; therefore, there are an enormous number of natural products for which stereocontrolled halogenation must be a critical component of any synthesis strategy. In this Review, we critically discuss the methods and strategies used for stereoselective introduction of halogen atoms in the context of natural product synthesis. Using the successes of the past, we also attempt to identify gaps in our synthesis technology that would aid the synthesis of halogenated natural products, as well as existing methods that have not yet seen application in complex molecule synthesis. The chemistry described herein demonstrates yet again how natural products continue to provide the inspiration for critical advances in chemical synthesis.
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Affiliation(s)
- Won-jin Chung
- Department of Chemistry, Gwangju Institute of Science and Technology, Gwangju, South Korea.
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87
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León-Rayo DF, Morales-Chamorro M, Cordero-Vargas A. A Formal Intermolecular Iodolactonization Reaction Based on a Radical-Ionic Sequence. European J Org Chem 2016. [DOI: 10.1002/ejoc.201600051] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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88
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Pan H, Huang H, Liu W, Tian H, Shi Y. Phosphine Oxide-Sc(OTf)3 Catalyzed Highly Regio- and Enantioselective Bromoaminocyclization of (E)-Cinnamyl Tosylcarbamates. An Approach to a Class of Synthetically Versatile Functionalized Molecules. Org Lett 2016; 18:896-9. [PMID: 26894481 DOI: 10.1021/acs.orglett.5b03459] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
A highly regio- and enantioselective bromoaminocyclization of (E)-cinnamyl tosylcarbamates catalyzed by a chiral phosphine oxide-Sc(OTf)3 complex is described. A wide variety of optically active aryl 5-bromo-1,3-oxazinan-2-ones can be obtained with high yield and enantioselectivity.
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Affiliation(s)
- Hongjie Pan
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences , Beijing 100190, China
| | - Hu Huang
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences , Beijing 100190, China
| | - Weigang Liu
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences , Beijing 100190, China
| | - Hua Tian
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences , Beijing 100190, China
| | - Yian Shi
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences , Beijing 100190, China.,Department of Chemistry, Colorado State University , Fort Collins, Colorado 80523, United States
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89
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Chung WJ, Vanderwal CD. Stereoselektive Halogenierungen in der Naturstoffsynthese. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201506388] [Citation(s) in RCA: 52] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Won-jin Chung
- Department of Chemistry; Gwangju Institute of Science and Technology; Gwangju Südkorea
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90
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Tandem superelectrophilic activation for the regioselective chlorofluorination of recalcitrant allylic amines. Tetrahedron 2016. [DOI: 10.1016/j.tet.2015.12.013] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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91
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Kawato Y, Ono H, Kubota A, Nagao Y, Morita N, Egami H, Hamashima Y. Highly Enantioselective Bromocyclization of Allylic Amides with a P/P=O Double-Site Lewis Base Catalyst. Chemistry 2016; 22:2127-2133. [DOI: 10.1002/chem.201503153] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2015] [Indexed: 01/10/2023]
Affiliation(s)
- Yuji Kawato
- School of Pharmaceutical Sciences; University of Shizuoka; 52-1 Yada, Suruga-ku Shizuoka 422-8526 Japan
| | - Hiromi Ono
- School of Pharmaceutical Sciences; University of Shizuoka; 52-1 Yada, Suruga-ku Shizuoka 422-8526 Japan
| | - Akino Kubota
- School of Pharmaceutical Sciences; University of Shizuoka; 52-1 Yada, Suruga-ku Shizuoka 422-8526 Japan
| | - Yoshihiro Nagao
- School of Pharmaceutical Sciences; University of Shizuoka; 52-1 Yada, Suruga-ku Shizuoka 422-8526 Japan
| | - Naoki Morita
- School of Pharmaceutical Sciences; University of Shizuoka; 52-1 Yada, Suruga-ku Shizuoka 422-8526 Japan
| | - Hiromichi Egami
- School of Pharmaceutical Sciences; University of Shizuoka; 52-1 Yada, Suruga-ku Shizuoka 422-8526 Japan
| | - Yoshitaka Hamashima
- School of Pharmaceutical Sciences; University of Shizuoka; 52-1 Yada, Suruga-ku Shizuoka 422-8526 Japan
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92
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Verma A, Jana S, Durga Prasad C, Yadav A, Kumar S. Organoselenium and DMAP co-catalysis: regioselective synthesis of medium-sized halolactones and bromooxepanes from unactivated alkenes. Chem Commun (Camb) 2016; 52:4179-82. [DOI: 10.1039/c5cc10245f] [Citation(s) in RCA: 51] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
A co-catalytic system has been developed for the synthesis of medium-sized halolactones and bromooxepanes possessing high transannular strain. Mechanistic studies reveal that quaternary selenium intermediate is involved in catalysis.
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Affiliation(s)
- Ajay Verma
- Department of Chemistry
- Indian Institute of Science Education and Research (IISER) Bhopal
- Bhopal
- India
| | - Sadhan Jana
- Department of Chemistry
- Indian Institute of Science Education and Research (IISER) Bhopal
- Bhopal
- India
| | - Ch. Durga Prasad
- Department of Chemistry
- Indian Institute of Science Education and Research (IISER) Bhopal
- Bhopal
- India
| | - Abhimanyu Yadav
- Department of Chemistry
- Indian Institute of Science Education and Research (IISER) Bhopal
- Bhopal
- India
| | - Sangit Kumar
- Department of Chemistry
- Indian Institute of Science Education and Research (IISER) Bhopal
- Bhopal
- India
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93
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Bao X, Wei S, Zou L, He Y, Xue F, Qu J, Wang B. Asymmetric chlorination of 4-substituted pyrazolones catalyzed by natural cinchona alkaloid. Chem Commun (Camb) 2016; 52:11426-11429. [DOI: 10.1039/c6cc06236a] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
A natural quinidine catalyzed asymmetric chlorination of 4-substituted pyrazolones was revealed in high yield and excellent enantioselectivity.
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Affiliation(s)
- Xiaoze Bao
- State Key Laboratory of Fine Chemicals
- School of Pharmaceutical Science and Technology
- Dalian University of Technology
- Dalian 116024
- P. R. China
| | - Shiqiang Wei
- State Key Laboratory of Fine Chemicals
- School of Pharmaceutical Science and Technology
- Dalian University of Technology
- Dalian 116024
- P. R. China
| | - Liwei Zou
- State Key Laboratory of Fine Chemicals
- School of Pharmaceutical Science and Technology
- Dalian University of Technology
- Dalian 116024
- P. R. China
| | - Yuli He
- State Key Laboratory of Fine Chemicals
- School of Pharmaceutical Science and Technology
- Dalian University of Technology
- Dalian 116024
- P. R. China
| | - Fuzhao Xue
- State Key Laboratory of Fine Chemicals
- School of Pharmaceutical Science and Technology
- Dalian University of Technology
- Dalian 116024
- P. R. China
| | - Jingping Qu
- State Key Laboratory of Fine Chemicals
- School of Pharmaceutical Science and Technology
- Dalian University of Technology
- Dalian 116024
- P. R. China
| | - Baomin Wang
- State Key Laboratory of Fine Chemicals
- School of Pharmaceutical Science and Technology
- Dalian University of Technology
- Dalian 116024
- P. R. China
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94
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Xia Z, Hu J, Shen Z, Wan X, Yao Q, Lai Y, Gao JM, Xie W. Enantioselective Bromo-oxycyclization of Silanol. Org Lett 2015; 18:80-3. [DOI: 10.1021/acs.orglett.5b03303] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Zilei Xia
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Science, Northwest A&F University, 22 Xinong Road, Yangling 712100, Shaanxi, China
- State
Key Laboratory of Natural Medicines, Center of Drug Discovery, China Pharmaceutical University, 24 Tongjiaxiang, Nanjing 210009, China
| | - Jiadong Hu
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Science, Northwest A&F University, 22 Xinong Road, Yangling 712100, Shaanxi, China
- State
Key Laboratory of Natural Medicines, Center of Drug Discovery, China Pharmaceutical University, 24 Tongjiaxiang, Nanjing 210009, China
| | - Zhigao Shen
- State
Key Laboratory of Natural Medicines, Center of Drug Discovery, China Pharmaceutical University, 24 Tongjiaxiang, Nanjing 210009, China
| | - Xiaolong Wan
- State Key Laboratory of Bioorganic & Natural Products Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai 200032, China
| | - Qizheng Yao
- State
Key Laboratory of Natural Medicines, Center of Drug Discovery, China Pharmaceutical University, 24 Tongjiaxiang, Nanjing 210009, China
| | - Yisheng Lai
- State
Key Laboratory of Natural Medicines, Center of Drug Discovery, China Pharmaceutical University, 24 Tongjiaxiang, Nanjing 210009, China
| | - Jin-Ming Gao
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Science, Northwest A&F University, 22 Xinong Road, Yangling 712100, Shaanxi, China
| | - Weiqing Xie
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Science, Northwest A&F University, 22 Xinong Road, Yangling 712100, Shaanxi, China
- State Key Laboratory of Bioorganic & Natural Products Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai 200032, China
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95
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Li Z, Shi Y. Chiral Phosphine Oxide-Sc(OTf)3 Complex Catalyzed Enantioselective Bromoaminocyclization of 2-Benzofuranylmethyl N-Tosylcarbamates. Approach to a Novel Class of Optically Active Spiro Compounds. Org Lett 2015; 17:5752-5. [PMID: 26571147 DOI: 10.1021/acs.orglett.5b02817] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
An efficient enantioselective bromoaminocyclization of 2-benzofuranylmethyl N-tosylcarbamates catalyzed by a chiral phosphine oxide-Sc(OTf)(3) complex is described. A wide variety of optically active spiro benzofuran oxazolidinones can be obtained with high enantioselectivities.
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Affiliation(s)
- Zequan Li
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences , Beijing 100190, China
| | - Yian Shi
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences , Beijing 100190, China.,State Key Laboratory of Coordination Chemistry, Center for Multimolecular Organic Chemistry, School of Chemistry and Chemical Engineering, Nanjing University , Nanjing 210093, China.,Department of Chemistry, Colorado State University , Fort Collins, Colorado 80523, United States
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96
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Tripathi CB, Mukherjee S. Catalytic Enantioselective 1,4-Iodofunctionalizations of Conjugated Dienes. Org Lett 2015; 17:4424-7. [PMID: 26382149 DOI: 10.1021/acs.orglett.5b02026] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
The first catalytic enantioselective 1,4-iodofunctionalizations of conjugated dienes have been developed. Starting from β,γ,δ,ε-unsaturated oximes and 4-Ns hydrazones, these N-iodosuccinimide-mediated reactions are catalyzed by newly modified tertiary aminothiourea derivatives and furnish Δ(2)-isoxazoline and Δ(2)-pyrazoline derivatives, respectively, containing an (E)-allyl iodide group at the quaternary stereogenic center generally in high yield and with excellent enantioselectivity (up to 98.5:1.5 er).
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Affiliation(s)
| | - Santanu Mukherjee
- Department of Organic Chemistry, Indian Institute of Science , Bangalore 560012, India
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97
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Uccello Barretta G, Mandoli A, Balzano F, Aiello F, De Nicola B, Del Grande A. Monomeric and Dimeric 9-OAnthraquinone and Phenanthryl Derivatives of Cinchona Alkaloids as Chiral Solvating Agents for the NMR Enantiodiscrimination of Chiral Hemiesters. Chirality 2015; 27:693-9. [DOI: 10.1002/chir.22488] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2015] [Accepted: 07/09/2015] [Indexed: 11/05/2022]
Affiliation(s)
| | - Alessandro Mandoli
- Dipartimento di Chimica e Chimica Industriale; Università di Pisa; Pisa Italy
| | - Federica Balzano
- Dipartimento di Chimica e Chimica Industriale; Università di Pisa; Pisa Italy
| | - Federica Aiello
- Dipartimento di Chimica e Chimica Industriale; Università di Pisa; Pisa Italy
| | - Beatrice De Nicola
- Dipartimento di Chimica e Chimica Industriale; Università di Pisa; Pisa Italy
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98
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Liu W, Pan H, Tian H, Shi Y. Enantioselective 6-exo-Bromoaminocyclization of Homoallylic N-Tosylcarbamates Catalyzed by a Novel Monophosphine-Sc(OTf)3 Complex. Org Lett 2015; 17:3956-9. [PMID: 26186576 DOI: 10.1021/acs.orglett.5b01779] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
A highly enantioselective 6-exo-bromoaminocyclization of (E)-homoallylic N-tosylcarbamates catalyzed by a novel monophosphine-Sc(OTf)3 complex is described, giving a wide variety of optically active oxazinanones with high enantioselectivities.
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Affiliation(s)
- Weigang Liu
- †Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Hongjie Pan
- †Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Hua Tian
- †Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Yian Shi
- †Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China.,‡State Key Laboratory of Coordination Chemistry, Center for Multimolecular Organic Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China.,§Department of Chemistry, Colorado State University, Fort Collins, Colorado 80523, United States
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99
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Zhang X, Li J, Tian H, Shi Y. Catalytic Asymmetric Bromination of Unfunctionalized Olefins with H2O as a Nucleophile. Chemistry 2015; 21:11658-63. [DOI: 10.1002/chem.201502133] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2015] [Indexed: 01/17/2023]
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100
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Yin Q, Wang SG, Liang XW, Gao DW, Zheng J, You SL. Organocatalytic asymmetric chlorinative dearomatization of naphthols. Chem Sci 2015; 6:4179-4183. [PMID: 29218183 PMCID: PMC5707459 DOI: 10.1039/c5sc00494b] [Citation(s) in RCA: 93] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2015] [Accepted: 04/25/2015] [Indexed: 01/08/2023] Open
Abstract
An organocatalytic asymmetric chlorinative dearomatization of naphthols was realized for the first time, providing chiral naphthalenones with a Cl-containing all-substituted stereocenter in excellent yields and enantioselectivity (up to 97% yield and 96% ee). The reaction features mild reaction conditions, good tolerance of diverse functional groups and simple reaction operation.
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Affiliation(s)
- Qin Yin
- State Key Laboratory of Organometallic Chemistry , Shanghai Institute of Organic Chemistry , Chinese Academy of Sciences , 345 Lingling Lu , Shanghai 200032 , China .
| | - Shou-Guo Wang
- State Key Laboratory of Organometallic Chemistry , Shanghai Institute of Organic Chemistry , Chinese Academy of Sciences , 345 Lingling Lu , Shanghai 200032 , China .
| | - Xiao-Wei Liang
- State Key Laboratory of Organometallic Chemistry , Shanghai Institute of Organic Chemistry , Chinese Academy of Sciences , 345 Lingling Lu , Shanghai 200032 , China .
| | - De-Wei Gao
- State Key Laboratory of Organometallic Chemistry , Shanghai Institute of Organic Chemistry , Chinese Academy of Sciences , 345 Lingling Lu , Shanghai 200032 , China .
| | - Jun Zheng
- State Key Laboratory of Organometallic Chemistry , Shanghai Institute of Organic Chemistry , Chinese Academy of Sciences , 345 Lingling Lu , Shanghai 200032 , China .
| | - Shu-Li You
- State Key Laboratory of Organometallic Chemistry , Shanghai Institute of Organic Chemistry , Chinese Academy of Sciences , 345 Lingling Lu , Shanghai 200032 , China .
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