1
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Liu Z, Wu H, Zhang H, Wang F, Liu X, Dong S, Hong X, Feng X. Iron-Catalyzed Asymmetric Imidation of Sulfides via Sterically Biased Nitrene Transfer. J Am Chem Soc 2024; 146:18050-18060. [PMID: 38878303 DOI: 10.1021/jacs.4c04855] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/04/2024]
Abstract
Transition-metal-catalyzed enantioselective nitrene transfer to sulfides has emerged as one of the most powerful strategies for rapid construction of enantioenriched sulfimides. However, achieving stereocontrol over highly active earth-abundant transition-metal nitrenoid intermediates remains a formidable challenge compared with precious metals. Herein, we disclose a chiral iron(II)/N,N'-dioxide-catalyzed enantioselective imidation of dialkyl and alkyl aryl sulfides using iminoiodinanes as nitrene precursors. A series of chiral sulfimides were obtained in moderate-to-good yields with high enantioselectivities (56 examples, up to 99% yield, 98:2 e.r.). The utility of this methodology was demonstrated by late-stage modification of complex molecules and synthesis of the chiral insecticide sulfoxaflor and the intermediates of related bioactive compounds. Based on experimental studies and theoretical calculations, a water-bonded high-spin iron nitrenoid species was identified as the key intermediate. The observed stereoselectivity was original from the steric repulsion between the amide unit of the ligand in the chiral cave and the bulky substituent of sulfides. Additionally, dioxazolones proved to be suitable acylnitrene precursors in the presence of an iron(III)/N,N'-dioxide complex, resulting in the formation of enantioselectivity-reversed sulfimides (14 examples, up to 81% yield, 97:3 e.r.).
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Affiliation(s)
- Zhenzhong Liu
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, China
| | - Hongli Wu
- Center of Chemistry for Frontier Technologies, Department of Chemistry, State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou 310027, China
| | - Helong Zhang
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, China
| | - Fang Wang
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, China
| | - Xiaohua Liu
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, China
| | - Shunxi Dong
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, China
| | - Xin Hong
- Center of Chemistry for Frontier Technologies, Department of Chemistry, State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou 310027, China
| | - Xiaoming Feng
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, China
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2
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Yuan Y, Han Y, Zhang ZK, Sun S, Wu K, Yang J, Zhang J. Enantioselective Arylation of Sulfenamides to Access Sulfilimines Enabled by Palladium Catalysis. Angew Chem Int Ed Engl 2024:e202409541. [PMID: 38935325 DOI: 10.1002/anie.202409541] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2024] [Revised: 06/24/2024] [Accepted: 06/25/2024] [Indexed: 06/28/2024]
Abstract
Sulfur-containing functional groups have garnered considerable attention due to their common occurrence in ligands, pharmaceuticals, and insecticides. Nevertheless, enantioselective synthesis of sulfilimines, particularly diaryl sulfilimines remains a challenging and persistent goal. Herein we report a highly enantio- and chemoselective cross-coupling of sulfenamides with aryl diazonium salt to construct diverse S(IV) stereocenters by Pd catalysis. Bisphosphine ligands bearing sulfinamide groups play a crucial role in achieving high reactivity and selectivity. This approach provides a general, modular and divergent framework for quickly synthesizing chiral sulfilimines and sulfoximines that are otherwise challenging to access. In addition, the origins of the high chemoselectivity and enantioselectivity were extensively investigated using density functional theory calculations.
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Affiliation(s)
- Yin Yuan
- Department of Chemistry, Fudan University, 2205 Songhu Road, Shanghai, 200438, China
| | - Yidan Han
- College of Chemistry and Bioengineering, Guilin University of Technology, Guilin, 541006, China
| | - Zhi-Kun Zhang
- Department of Chemistry, Fudan University, 2205 Songhu Road, Shanghai, 200438, China
| | - Shijin Sun
- Department of Chemistry, Fudan University, 2205 Songhu Road, Shanghai, 200438, China
| | - Ke Wu
- Department of Chemistry, Fudan University, 2205 Songhu Road, Shanghai, 200438, China
| | - Junfeng Yang
- Department of Chemistry, Fudan University, 2205 Songhu Road, Shanghai, 200438, China
- Fudan Zhangjiang Institute, Shanghai, 201203, China
- School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan, 453007, China
| | - Junliang Zhang
- Department of Chemistry, Fudan University, 2205 Songhu Road, Shanghai, 200438, China
- School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan, 453007, China
- School of Chemistry & Chemical Engineering, Yangzhou University, Yangzhou, 225002, China
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3
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Gao L, Wang YQ, Zhang YQ, Fu YH, Liu YY, Zhang QW. Nickel-Catalyzed Enantioselective Synthesis of Dienyl Sulfoxide. Angew Chem Int Ed Engl 2023:e202317626. [PMID: 38085222 DOI: 10.1002/anie.202317626] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2023] [Indexed: 12/29/2023]
Abstract
Sulfoxides are widely used in the pharmaceutical industry and as ligands in asymmetric catalysis. However, the efficient asymmetric synthesis of this structural motif remains limited. In this study, we disclosed a Ni-catalyzed enantioconvergent reaction that utilizes both racemic allenyl carbonates and β-sulfinyl esters. Our method employs cheap and more sustainable Ni(II) as a precatalyst and successfully overcomes the challenging poisoning effect and instability of sulfenate generated in situ. This enables the synthesis of a series of dienyl sulfoxides with enantioselectivity of up to 98 % ee. The product exhibits tremendous potential in various applications, including diastereoselective Diels-Alder reactions, coordination with transition metals, and incorporation into medicinal compounds, among others. Using a combination of experimental and computational methods, we have uncovered an interesting associated outersphere mechanism that contrasts with conventional mechanisms commonly observed in asymmetric transition metal catalysis.
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Affiliation(s)
- Li Gao
- Key Laboratory of Precision and Intelligent Chemistry, Department of Chemistry, University of Science and Technology of China, Hefei, 230026, Anhui, China
| | - Yin-Qi Wang
- Key Laboratory of Precision and Intelligent Chemistry, Department of Chemistry, University of Science and Technology of China, Hefei, 230026, Anhui, China
| | - Ya-Qian Zhang
- Key Laboratory of Precision and Intelligent Chemistry, Department of Chemistry, University of Science and Technology of China, Hefei, 230026, Anhui, China
| | - Yi-Han Fu
- Key Laboratory of Precision and Intelligent Chemistry, Department of Chemistry, University of Science and Technology of China, Hefei, 230026, Anhui, China
| | - Yi-Yu Liu
- Key Laboratory of Precision and Intelligent Chemistry, Department of Chemistry, University of Science and Technology of China, Hefei, 230026, Anhui, China
| | - Qing-Wei Zhang
- Key Laboratory of Precision and Intelligent Chemistry, Department of Chemistry, University of Science and Technology of China, Hefei, 230026, Anhui, China
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4
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Huang G, Ye J, Bashir MA, Chen Y, Chen W, Lu X. Hypervalent Iodine Mediated Synthesis of Sulfinamidines from Sulfenamides. J Org Chem 2023; 88:11728-11734. [PMID: 37506052 DOI: 10.1021/acs.joc.3c00999] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/30/2023]
Abstract
In this study, we present a novel, efficient method for the oxidative amination of sulfenamides using diacetoxyiodobenzene (PhI(OAc)2) and amines under basic conditions. This innovative technique streamlines the synthesis of sulfinamidines under mild, metal-free conditions, achieving outstanding yields of up to 99%. Furthermore, we propose possible pathways that elucidate the observed molecular sequence of events in this reaction. This cutting-edge approach not only advances the synthesis of valuable sulfinamidine compounds but also expands the synthetic toolbox available to chemists, paving the way for future discoveries in organic synthesis and potential applications in medicinal chemistry.
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Affiliation(s)
- Guoling Huang
- Laboratory of Marine Green Fine Chemicals, School of Chemistry and Chemical Engineering, Lingnan Normal University, Zhanjiang, 524048, P. R. China
| | - Jianlin Ye
- Laboratory of Marine Green Fine Chemicals, School of Chemistry and Chemical Engineering, Lingnan Normal University, Zhanjiang, 524048, P. R. China
| | | | - Yuetong Chen
- Laboratory of Marine Green Fine Chemicals, School of Chemistry and Chemical Engineering, Lingnan Normal University, Zhanjiang, 524048, P. R. China
| | - Wenjing Chen
- Laboratory of Marine Green Fine Chemicals, School of Chemistry and Chemical Engineering, Lingnan Normal University, Zhanjiang, 524048, P. R. China
| | - Xunbo Lu
- Laboratory of Marine Green Fine Chemicals, School of Chemistry and Chemical Engineering, Lingnan Normal University, Zhanjiang, 524048, P. R. China
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5
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Zhang X, Wang F, Tan CH. Asymmetric Synthesis of S(IV) and S(VI) Stereogenic Centers. JACS AU 2023; 3:700-714. [PMID: 37006767 PMCID: PMC10052288 DOI: 10.1021/jacsau.2c00626] [Citation(s) in RCA: 24] [Impact Index Per Article: 24.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/14/2022] [Revised: 12/06/2022] [Accepted: 12/06/2022] [Indexed: 05/22/2023]
Abstract
Sulfur can form diverse S(IV) and S(VI) stereogenic centers, of which some have gained significant attention recently due to their increasing use as pharmacophores in drug discovery programs. The preparation of these sulfur stereogenic centers in their enantiopure form has been challenging, and progress made will be discussed in this Perspective. This Perspective summarizes different strategies, with selected works, for asymmetric synthesis of these moieties, including diastereoselective transformations using chiral auxiliaries, enantiospecific transformations of enantiopure sulfur compounds, and catalytic enantioselective synthesis. We will discuss the advantages and limitations of these strategies and will provide our views on how this field will develop.
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Affiliation(s)
- Xin Zhang
- West China
School of Public Health and West China Fourth Hospital, and State
Key Laboratory of Biotherapy, Sichuan University, 610041 Chengdu, China
| | - Fucheng Wang
- West China
School of Public Health and West China Fourth Hospital, and State
Key Laboratory of Biotherapy, Sichuan University, 610041 Chengdu, China
| | - Choon-Hong Tan
- School
of Chemistry, Chemical Engineering and Biotechnology, Nanyang Technological University, 21 Nanyang Link, 637371 Singapore
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6
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Lu X, Huang G, Ye J, Bashir MA, Su J, Yang K, Liang F, Xu X. Hypervalent Iodine-Mediated Synthesis of Sulfinimidate Esters from Sulfenamides. Org Lett 2023; 25:2151-2156. [PMID: 36946517 DOI: 10.1021/acs.orglett.3c00678] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/23/2023]
Abstract
In this study, we present a novel and efficient approach for the oxidative esterification of sulfenamides using phenyliodonium diacetate, enabling the synthesis of sulfinimidate esters and sulfilimines under mild and metal-free conditions, with yields reaching up to 99%. The protocol is readily scalable and compatible with a diverse range of substrates and functional groups, and we demonstrate its potential for late-stage functionalization of pharmacologically relevant molecules. Furthermore, we propose a plausible reaction mechanism to account for the observed sequence of events.
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Affiliation(s)
- Xunbo Lu
- School of Chemistry and Chemical Engineering, Laboratory of Marine Green Fine Chemicals, Lingnan Normal University (LNU), 29 Cunjin Road, Zhanjiang, Guangdong 524048, People's Republic of China
| | - Guoling Huang
- School of Chemistry and Chemical Engineering, Laboratory of Marine Green Fine Chemicals, Lingnan Normal University (LNU), 29 Cunjin Road, Zhanjiang, Guangdong 524048, People's Republic of China
| | - Jianlin Ye
- School of Chemistry and Chemical Engineering, Laboratory of Marine Green Fine Chemicals, Lingnan Normal University (LNU), 29 Cunjin Road, Zhanjiang, Guangdong 524048, People's Republic of China
| | - Muhammad Adnan Bashir
- Peking University ShenZhen Graduate School, Shenzhen, Guangdong 518055, People's Republic of China
| | - Jianfang Su
- School of Chemistry and Chemical Engineering, Laboratory of Marine Green Fine Chemicals, Lingnan Normal University (LNU), 29 Cunjin Road, Zhanjiang, Guangdong 524048, People's Republic of China
| | - Kaiyuan Yang
- School of Chemistry and Chemical Engineering, Laboratory of Marine Green Fine Chemicals, Lingnan Normal University (LNU), 29 Cunjin Road, Zhanjiang, Guangdong 524048, People's Republic of China
| | - Fangpeng Liang
- School of Chemistry and Chemical Engineering, Laboratory of Marine Green Fine Chemicals, Lingnan Normal University (LNU), 29 Cunjin Road, Zhanjiang, Guangdong 524048, People's Republic of China
| | - Xinyu Xu
- School of Chemistry and Chemical Engineering, Laboratory of Marine Green Fine Chemicals, Lingnan Normal University (LNU), 29 Cunjin Road, Zhanjiang, Guangdong 524048, People's Republic of China
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7
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Tsuzuki S, Kano T. Asymmetric Synthesis of Chiral Sulfimides through the O-Alkylation of Enantioenriched Sulfinamides and Addition of Carbon Nucleophiles. Angew Chem Int Ed Engl 2023; 62:e202300637. [PMID: 36807500 DOI: 10.1002/anie.202300637] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2023] [Revised: 02/15/2023] [Accepted: 02/20/2023] [Indexed: 02/22/2023]
Abstract
Chiral sulfimides, the aza-analogues of sulfoxides, are valuable compounds in organic synthesis and medicinal chemistry. Herein, we report an efficient method for preparing chiral sulfimides from easily available enantioenriched sulfinamides. The key step of this method is a stereospecific oxygen-selective alkylation of enantioenriched sulfinamides, which is accomplished by using isopropyl iodide, K2 CO3 , and DMPU. The resulting chiral sulfinimidate esters are transformed to chiral sulfimides by the nucleophilic addition of the Grignard reagents under simple conditions. This transformation enables access to the enantioenriched diaryl or dialkyl sulfimides bearing two similar carbon substituents, which are difficult to synthesize by previous methods.
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Affiliation(s)
- Saori Tsuzuki
- Department of Applied Chemistry, Graduate School of Engineering, Tokyo University of Agriculture and Technology, Koganei, Tokyo, 184-8588, Japan.,Department of Chemistry, Graduate School of Science, Kyoto University Sakyo, Kyoto, 606-8502, Japan
| | - Taichi Kano
- Department of Applied Chemistry, Graduate School of Engineering, Tokyo University of Agriculture and Technology, Koganei, Tokyo, 184-8588, Japan
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8
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Ag2CO3 catalyzed aza-michael addition of pyrazoles to α, β-unsaturated carbonyl compounds: A new access to N-alkylated pyrazole derivatives. Tetrahedron 2023. [DOI: 10.1016/j.tet.2023.133305] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/09/2023]
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9
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Synthesis of N-acyl sulfenamides via copper catalysis and their use as S-sulfenylating reagents of thiols. Nat Commun 2022; 13:6445. [PMID: 36307408 PMCID: PMC9616856 DOI: 10.1038/s41467-022-34223-7] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2022] [Accepted: 10/19/2022] [Indexed: 12/25/2022] Open
Abstract
Sulfur-heteroatom bonds such as S-S and S-N are found in a variety of natural products and often play important roles in biological processes. Despite their widespread applications, the synthesis of sulfenamides, which feature S-N bonds that may be cleaved under mild conditions, remains underdeveloped. Here, we report a method for synthesis of N-acyl sulfenamides via copper-catalyzed nitrene-mediated S-amidation reaction of thiols with dioxazolones. This method is efficient, convenient, and broadly applicable. Moreover, the resulting N-acetyl sulfenamides are highly effective S-sulfenylation reagents for the synthesis of unsymmetrical disulfides under mild conditions. The S-sulfenylation protocol enables facile access to sterically demanding disulfides that are difficult to synthesize by other means.
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10
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Sahu K, Dutta J, Nayak S, Nayak P, Biswal HS, Kar S. Investigation of the Nature of Intermolecular Interactions in Tetra(thiocyanato)corrolato-Ag(III) Complexes: Agostic or Hydrogen Bonded? Inorg Chem 2022; 61:6539-6546. [PMID: 35442024 DOI: 10.1021/acs.inorgchem.2c00353] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Tetra(thiocyanato)corrolato-Ag(III) complexes presented here constitute a new class of metallo-corrole complexes. The spectroscopic properties of these complexes are quite unusual and interesting. For example, the absorption spectra of these β-substituted corrolato-Ag(III) complexes are very different from those of the β-unsubstituted corrolato-Ag(III) derivatives. Single-crystal XRD analysis of a representative tetra(thiocyanato)corrolato-Ag(III) derivative reveals C-H···Ag interactions. The C-H···Ag interactions are rarely demonstrated in the crystal lattice of a discrete coordination/organometallic compound. Optimization of the hydrogen positions of the crystal structure discloses the geometrical parameters of the said interaction as a Ag···H distance of 2.597 Å and ∠C-H···Ag of 109.62°. The natural bond orbital analysis provides information about the donor-acceptor orbitals involved in the interactions and their interaction energies. It was observed that the σC-H orbital overlaps with the vacant d-orbital of Ag with an interaction energy of 17.93 kJ/mol. The filled d-orbital of Ag overlaps with the σ*C-H orbital with an interaction energy of 4.79 kJ/mol. The highlights of this work are that the H···Ag distance is outside of the distance range for the typical agostic interaction but fitted with the weak H-bond distance. However, the ∠C-H···Ag angle is within the range of the agostic interaction. Both crystallographic data and electronic structure calculations reveal that these kinds of intermolecular interactions in square-planar d8 Ag(III) complexes are intermediate in nature. Thus, they cannot be categorically called either hydrogen bonding or agostic interaction.
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Affiliation(s)
- Kasturi Sahu
- School of Chemical Sciences, National Institute of Science Education and Research (NISER), Bhubaneswar 752050, India.,Homi Bhabha National Institute, Training School Complex, Anushakti Nagar, Mumbai 400 094, India
| | - Juhi Dutta
- School of Chemical Sciences, National Institute of Science Education and Research (NISER), Bhubaneswar 752050, India.,Homi Bhabha National Institute, Training School Complex, Anushakti Nagar, Mumbai 400 094, India
| | - Srimoy Nayak
- School of Chemical Sciences, National Institute of Science Education and Research (NISER), Bhubaneswar 752050, India.,Homi Bhabha National Institute, Training School Complex, Anushakti Nagar, Mumbai 400 094, India
| | - Panisha Nayak
- School of Chemical Sciences, National Institute of Science Education and Research (NISER), Bhubaneswar 752050, India.,Homi Bhabha National Institute, Training School Complex, Anushakti Nagar, Mumbai 400 094, India
| | - Himansu S Biswal
- School of Chemical Sciences, National Institute of Science Education and Research (NISER), Bhubaneswar 752050, India.,Homi Bhabha National Institute, Training School Complex, Anushakti Nagar, Mumbai 400 094, India
| | - Sanjib Kar
- School of Chemical Sciences, National Institute of Science Education and Research (NISER), Bhubaneswar 752050, India.,Homi Bhabha National Institute, Training School Complex, Anushakti Nagar, Mumbai 400 094, India
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11
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Lai C, Lebel H. Advances in Stereoselective Iron(II)‐Catalyzed Synthesis of Sulfilimines with
N
‐Mesyloxycarbamates. Helv Chim Acta 2021. [DOI: 10.1002/hlca.202100209] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Calvine Lai
- Département de Chimie Center for Green Chemistry and Catalysis Université de Montréal C.P. 6128, Succursale Centre-ville Montréal, Québec H3C 3J7 Canada
| | - Hélène Lebel
- Département de Chimie Center for Green Chemistry and Catalysis Université de Montréal C.P. 6128, Succursale Centre-ville Montréal, Québec H3C 3J7 Canada
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12
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Annapureddy RR, Burg F, Gramüller J, Golub TP, Merten C, Huber SM, Bach T. Silver-Catalyzed Enantioselective Sulfimidation Mediated by Hydrogen Bonding Interactions. Angew Chem Int Ed Engl 2021; 60:7920-7926. [PMID: 33438798 PMCID: PMC8048691 DOI: 10.1002/anie.202016561] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2020] [Indexed: 12/13/2022]
Abstract
An enantioselective sulfimidation of 3-thiosubstituted 2-quinolones and 2-pyridones was achieved with a stoichiometric nitrene source (PhI=NNs) and a silver-based catalyst system. Key to the success of the reaction is the use of a chiral phenanthroline ligand with a hydrogen bonding site. The enantioselectivity does not depend on the size of the two substituents at the sulfur atom but only on the binding properties of the heterocyclic lactams. A total of 21 chiral sulfimides were obtained in high yields (44-99 %) and with significant enantiomeric excess (70-99 % ee). The sulfimidation proceeds with high site-selectivity and can also be employed for the kinetic resolution of chiral sulfoxides. Mechanistic evidence suggests the intermediacy of a heteroleptic silver complex, in which the silver atom is bound to one molecule of the chiral ligand and one molecule of an achiral 1,10-phenanthroline. Support for the suggested reaction course was obtained by ESI mass spectrometry, DFT calculations, and a Hammett analysis.
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Affiliation(s)
- Rajasekar Reddy Annapureddy
- Department Chemie and Catalysis Research Center (CRC)Technische Universität MünchenLichtenbergstraße 485747GarchingGermany
| | - Finn Burg
- Department Chemie and Catalysis Research Center (CRC)Technische Universität MünchenLichtenbergstraße 485747GarchingGermany
| | - Johannes Gramüller
- Faculty of Chemistry and PharmacyInstitute of Organic ChemistryUniversity of RegensburgUniversitätsstraße 3193040RegensburgGermany
| | - Tino P. Golub
- Ruhr-Universität BochumFaculty for Chemistry and BiochemistryUniversitätsstraße 15044801BochumGermany
| | - Christian Merten
- Ruhr-Universität BochumFaculty for Chemistry and BiochemistryUniversitätsstraße 15044801BochumGermany
| | - Stefan M. Huber
- Ruhr-Universität BochumFaculty for Chemistry and BiochemistryUniversitätsstraße 15044801BochumGermany
| | - Thorsten Bach
- Department Chemie and Catalysis Research Center (CRC)Technische Universität MünchenLichtenbergstraße 485747GarchingGermany
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13
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Burg F, Buchelt C, Kreienborg NM, Merten C, Bach T. Enantioselective Synthesis of Diaryl Sulfoxides Enabled by Molecular Recognition. Org Lett 2021; 23:1829-1834. [PMID: 33606936 DOI: 10.1021/acs.orglett.1c00238] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The enantioselective sulfoxidation of diaryl-type sulfides was accomplished using a chiral manganese porphyrin complex equipped with a remote molecular recognition site. Despite the marginal size difference between the two substituents at the prostereogenic sulfur center, hydrogen bonding enabled the formation of chiral sulfoxides with exquisite enantioselectivities (16 examples, up to 99% ee). Aside from the precise orientation of a distinct substrate, the quinolone lactam offers an excellent entry point for further derivatization.
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Affiliation(s)
- Finn Burg
- Department Chemie and Catalysis Research Center (CRC), Technische Universität München, 85747 Garching, Germany
| | - Christoph Buchelt
- Department Chemie and Catalysis Research Center (CRC), Technische Universität München, 85747 Garching, Germany
| | - Nora M Kreienborg
- Fakultät für Chemie und Biochemie, Ruhr-Universität Bochum, Universitätsstraße 150, 44801 Bochum, Germany
| | - Christian Merten
- Fakultät für Chemie und Biochemie, Ruhr-Universität Bochum, Universitätsstraße 150, 44801 Bochum, Germany
| | - Thorsten Bach
- Department Chemie and Catalysis Research Center (CRC), Technische Universität München, 85747 Garching, Germany
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14
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Karmakar S, Das P, Kundu S. Silver-catalyzed tandem 5- and 6- endo-cyclizations via concomitant yne-ol-imine activation: selective entry to 2-aryldihydrofuroquinolines. NEW J CHEM 2021. [DOI: 10.1039/d1nj02643g] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Ag(i)-catalyzed domino imination-intramolecular bi-heterocyclization-aromatization cascade has been developed to construct 2-aryldihydrofuroquinolines from aldehyde and unprotected 4-(2-aminophenyl)but-3-yn-1-ol via tandem 5-endo-dig and 6-endo-trig cyclization.
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Affiliation(s)
- Swastik Karmakar
- Department of Chemistry, Basirhat College, A/w West Bengal State University, Basirhat-743412, West Bengal, India
| | - Prasanta Das
- Department of Chemistry, Basirhat College, A/w West Bengal State University, Basirhat-743412, West Bengal, India
| | - Sandip Kundu
- CIF Division, Indian Institute of Chemical Biology (IICB), Jadavpur-700032, West Bengal, India
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