1
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A Metal‐free Access to Hindered N‐Alkyl Sulfoximines via in Situ Generated Aza‐Oxyallyl Cations from Functionalized Alkyl Bromide. ASIAN J ORG CHEM 2022. [DOI: 10.1002/ajoc.202200210] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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2
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More SG, Suryavanshi G. Lewis acid triggered N-alkylation of sulfoximines through nucleophilic ring-opening of donor-acceptor cyclopropanes: synthesis of γ-sulfoximino malonic diesters. Org Biomol Chem 2022; 20:2518-2529. [PMID: 35266938 DOI: 10.1039/d2ob00213b] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Scandium triflate (Sc(OTf)3) catalyzed, mild, and regioselective ring-opening reaction of donor-acceptor (D-A) cyclopropanes has been developed using sulfoximines for the synthesis of γ-sulfoximino malonic diesters. This protocol allows the synthesis of different N-alkyl sulfoximines in good to excellent yields (up to 94%) with broad functional group tolerance. In this process, N-H and C-C bonds are cleaved to form new C-N and C-H bonds. The feasibility of this method is supported by a gram-scale reaction and synthetic elaboration of the obtained product.
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Affiliation(s)
- Satish G More
- Chemical Engineering and Process Development Division, CSIR-National Chemical Laboratory, Pune, 411 008, India. .,Academy of Scientific and Innovative Research, Ghaziabad, Uttar Pradesh, 201 002, India
| | - Gurunath Suryavanshi
- Chemical Engineering and Process Development Division, CSIR-National Chemical Laboratory, Pune, 411 008, India. .,Academy of Scientific and Innovative Research, Ghaziabad, Uttar Pradesh, 201 002, India
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3
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Ma D, Kong D, Wu P, Tu Y, Shi P, Wang X, Bolm C. Introduction of Lipophilic Side Chains to NH-Sulfoximines by Palladium Catalysis Under Blue Light Irradiation. Org Lett 2022; 24:2238-2241. [PMID: 35293757 DOI: 10.1021/acs.orglett.2c00622] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Palladium catalysis under blue (LED) light irradiation allows conversion of NH-sulfoximines into products with long lipophilic side chains attached to the S═N moiety. The three-component reactions involve both radicals and organometallic intermediates stemming from alkyl bromides and butadienes. The substrate scope is broad, and the products are formed in moderate to good yields.
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Affiliation(s)
- Ding Ma
- Institute of Organic Chemistry, RWTH Aachen University, D-52074 Aachen, Germany
| | - Deshen Kong
- Institute of Organic Chemistry, RWTH Aachen University, D-52074 Aachen, Germany
| | - Peng Wu
- Institute of Organic Chemistry, RWTH Aachen University, D-52074 Aachen, Germany
| | - Yongliang Tu
- Institute of Organic Chemistry, RWTH Aachen University, D-52074 Aachen, Germany
| | - Peng Shi
- Institute of Organic Chemistry, RWTH Aachen University, D-52074 Aachen, Germany
| | - Xianliang Wang
- Institute of Organic Chemistry, RWTH Aachen University, D-52074 Aachen, Germany
| | - Carsten Bolm
- Institute of Organic Chemistry, RWTH Aachen University, D-52074 Aachen, Germany
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4
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5
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Hui C, Antonchick AP. Iodonitrene: a direct metal-free electrophilic aminating reagent. Org Chem Front 2022. [DOI: 10.1039/d2qo00739h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Iodonitrene is a new type of reactive electrophilic aminating reagent that opens up opportunities for new discoveries.
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Affiliation(s)
- Chunngai Hui
- Max Planck Institute of Molecular Physiology, Department of Chemical Biology, Otto-Hahn-Strasse 11, 44227 Dortmund, Germany
- Technical University Dortmund, Faculty of Chemistry and Chemical Biology, Otto-Hahn-Strasse 6, 44221 Dortmund, Germany
| | - Andrey P. Antonchick
- Max Planck Institute of Molecular Physiology, Department of Chemical Biology, Otto-Hahn-Strasse 11, 44227 Dortmund, Germany
- Technical University Dortmund, Faculty of Chemistry and Chemical Biology, Otto-Hahn-Strasse 6, 44221 Dortmund, Germany
- Nottingham Trent University, School of Science and Technology, Department of Chemistry and Forensics, Clifton Lane, NG11 8NS Nottingham, UK
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6
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Andresini M, Tota A, Degennaro L, Bull JA, Luisi R. Synthesis and Transformations of NH-Sulfoximines. Chemistry 2021; 27:17293-17321. [PMID: 34519376 PMCID: PMC9291533 DOI: 10.1002/chem.202102619] [Citation(s) in RCA: 49] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2021] [Indexed: 11/17/2022]
Abstract
Recent years have seen a marked increase in the occurrence of sulfoximines in the chemical sciences, often presented as valuable motifs for medicinal chemistry. This has been prompted by both pioneering works taking sulfoximine containing compounds into clinical trials and the concurrent development of powerful synthetic methods. This review covers recent developments in the synthesis of sulfoximines concentrating on developments since 2015. This includes extensive developments in both S-N and S-C bond formations. Flow chemistry processes for sulfoximine synthesis are also covered. Finally, subsequent transformations of sulfoximines, particularly in N-functionalization are reviewed, including N-S, N-P, N-C bond forming processes and cyclization reactions.
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Affiliation(s)
- Michael Andresini
- Department of Pharmacy-Drug SciencesUniversity of Bari “A. Moro”Via E. Orabona 470125BariItaly
| | - Arianna Tota
- Department of Pharmacy-Drug SciencesUniversity of Bari “A. Moro”Via E. Orabona 470125BariItaly
| | - Leonardo Degennaro
- Department of Pharmacy-Drug SciencesUniversity of Bari “A. Moro”Via E. Orabona 470125BariItaly
| | - James A. Bull
- Department of Chemistry Imperial College LondonMolecular Sciences Research Hub White City Campus, Wood LaneLondonW12 0BZUK
| | - Renzo Luisi
- Department of Pharmacy-Drug SciencesUniversity of Bari “A. Moro”Via E. Orabona 470125BariItaly
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7
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Kaiser RP, Krake EF, Backer L, Urlaub J, Baumann W, Handler N, Buschmann H, Beweries T, Holzgrabe U, Bolm C. Ball milling - a new concept for predicting degradation profiles in active pharmaceutical ingredients. Chem Commun (Camb) 2021; 57:11956-11959. [PMID: 34704567 DOI: 10.1039/d1cc04716g] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A method for forced oxidative mechanochemical degradation of active pharmaceutical ingredients (APIs) using clopidogrel hydrogensulfate as a model compound is presented. Considerable and selective formation of degradants occurs already after very short reaction times of less than 15 minutes and the nature of the products is strongly dependent on the used oxidant.
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Affiliation(s)
- Reinhard P Kaiser
- RWTH Aachen University, Institute of Organic Chemistry, Landoltweg 1, 52074 Aachen, Germany.
| | - Everaldo F Krake
- Leibniz-Institut für Katalyse e.V., Albert-Einstein-Str. 29a, 18059 Rostock, Germany.
| | - Laura Backer
- Institut für Pharmazie und Lebensmittelchemie, Am Hubland, 97074 Würzburg, Germany.
| | - Jonas Urlaub
- Institut für Pharmazie und Lebensmittelchemie, Am Hubland, 97074 Würzburg, Germany.
| | - Wolfgang Baumann
- Leibniz-Institut für Katalyse e.V., Albert-Einstein-Str. 29a, 18059 Rostock, Germany.
| | - Norbert Handler
- RD&C Research, Development & Consulting GmbH, Neuwaldegger Strasse 35/2/3, 1170 Vienna, Austria
| | - Helmut Buschmann
- RD&C Research, Development & Consulting GmbH, Neuwaldegger Strasse 35/2/3, 1170 Vienna, Austria
| | - Torsten Beweries
- Leibniz-Institut für Katalyse e.V., Albert-Einstein-Str. 29a, 18059 Rostock, Germany.
| | - Ulrike Holzgrabe
- Institut für Pharmazie und Lebensmittelchemie, Am Hubland, 97074 Würzburg, Germany.
| | - Carsten Bolm
- RWTH Aachen University, Institute of Organic Chemistry, Landoltweg 1, 52074 Aachen, Germany.
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8
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Ma D, Kong D, Wang C, Truong KN, Rissanen K, Bolm C. Three-Dimensional Heterocycles by 5-exo-dig Cyclizations of S-Methyl- N-ynonylsulfoximines. Org Lett 2021; 23:8287-8290. [PMID: 34636567 DOI: 10.1021/acs.orglett.1c03041] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Upon treatment with Cs2CO3, S-methyl-N-ynonylsulfoximines undergo 5-exo-dig cyclizations to give three-dimensional heterocycles. The reactions proceed at ambient temperature with a wide range of substrates affording the corresponding products in good to excellent yields.
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Affiliation(s)
- Ding Ma
- Institute of Organic Chemistry, RWTH Aachen University, D-52074 Aachen, Germany
| | - Deshen Kong
- Institute of Organic Chemistry, RWTH Aachen University, D-52074 Aachen, Germany
| | - Chenyang Wang
- Institute of Organic Chemistry, RWTH Aachen University, D-52074 Aachen, Germany
| | - Khai-Nghi Truong
- University of Jyvaskyla, Department of Chemistry, FI-40014 Jyväskylä, Finland
| | - Kari Rissanen
- University of Jyvaskyla, Department of Chemistry, FI-40014 Jyväskylä, Finland
| | - Carsten Bolm
- Institute of Organic Chemistry, RWTH Aachen University, D-52074 Aachen, Germany
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9
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Tu Y, Zhang D, Shi P, Wang C, Ma D, Bolm C. Visible light-induced C-C bond cleavage in a multicomponent reaction cascade allowing acylations of sulfoximines with ketones. Org Biomol Chem 2021; 19:8096-8101. [PMID: 34487133 DOI: 10.1039/d1ob01411k] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Visible light induces C-C-bond cleavage reactions of ketones, which can be utilized for N-acylations of sulfoximines. No (photo)catalyst is required, and the reactions occur at ambient temperature in air. The substrate scope is broad for both ketones and sulfoximines. For converting NH-sulfoximines, the presence of NBS is essential.
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Affiliation(s)
- Yongliang Tu
- Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52074 Aachen, Germany.
| | - Duo Zhang
- Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52074 Aachen, Germany.
| | - Peng Shi
- Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52074 Aachen, Germany.
| | - Chenyang Wang
- Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52074 Aachen, Germany.
| | - Ding Ma
- Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52074 Aachen, Germany.
| | - Carsten Bolm
- Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52074 Aachen, Germany.
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10
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Wang C, Tu Y, Ma D, Ait Tarint C, Bolm C. Photocatalytic Synthesis of Difluoroacetoxy-containing Sulfoximines. Org Lett 2021; 23:6891-6894. [PMID: 34415176 DOI: 10.1021/acs.orglett.1c02452] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
[Bis(difluoroacetoxy)iodo]benzene and NH-sulfoximines react to give new hypervalent iodine(III) reagents, which under photocatalysis transfer difluoroacetoxy and sulfoximidoyl groups to styrenes with high regioselectivity. The results of mechanistic investigations suggest the intermediacy of radicals and reveal the importance of the difluoroacetoxy group on the iodine reagent.
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Affiliation(s)
- Chenyang Wang
- Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, D-52074 Aachen, Germany
| | - Yongliang Tu
- Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, D-52074 Aachen, Germany
| | - Ding Ma
- Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, D-52074 Aachen, Germany
| | - Chaimae Ait Tarint
- Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, D-52074 Aachen, Germany
| | - Carsten Bolm
- Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, D-52074 Aachen, Germany
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11
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Liu H, Xiong Y, Chen Z. Pd‐Catalyzed Cascade Heck‐Type Annulation And Carbonylation to
β
‐Oxindolysulfoximidoyl Amides at Room Temperature. ASIAN J ORG CHEM 2021. [DOI: 10.1002/ajoc.202100451] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Huahua Liu
- Key Laboratory of Functional Small Organic Molecules Ministry of Education College of Chemistry & Chemical Engineering Jiangxi Normal University Ziyang Road 99 Nanchang Jiangxi 330022 P. R. China
| | - Yuping Xiong
- Key Laboratory of Functional Small Organic Molecules Ministry of Education College of Chemistry & Chemical Engineering Jiangxi Normal University Ziyang Road 99 Nanchang Jiangxi 330022 P. R. China
| | - Zhiyuan Chen
- Key Laboratory of Functional Small Organic Molecules Ministry of Education College of Chemistry & Chemical Engineering Jiangxi Normal University Ziyang Road 99 Nanchang Jiangxi 330022 P. R. China
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12
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Kong X, Lin L, Chen X, Chen Y, Wang W, Xu B. Electrochemical Oxidative Syntheses of NH-Sulfoximines, NH-Sulfonimidamides and Dibenzothiazines via Anodically Generated Hypervalent Iodine Intermediates. CHEMSUSCHEM 2021; 14:3277-3282. [PMID: 34292660 DOI: 10.1002/cssc.202101002] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/12/2021] [Revised: 06/09/2021] [Indexed: 06/13/2023]
Abstract
Herein, we report a general method for the synthesis of NH-sulfoximines and NH-sulfonimidamides through direct electrochemical oxidative catalysis involving an iodoarene(I)/iodoarene(III) redox couple. In addition, dibenzothiazines can be synthesized from [1,1'-biaryl]-2-sulfides under standard conditions. Notably, only a catalytic amount of iodoarene is required for the generation in situ of an active hypervalent iodine catalyst, which avoids the need for an excess of a hypervalent iodine reagent relative to conventional approaches. Moreover, this protocol features broad substrate scope and wide functional group tolerance, delivering the target compounds with good-to-excellent yields even for a scale of more than 10 g.
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Affiliation(s)
- Xianqiang Kong
- School of Chemical Engineering and Materials, Changzhou Institute of Technology, No. 666 Liaohe Road, Changzhou, 213032, P. R. China
- College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, 2999 North Renmin Lu, Shanghai, 201620, P. R. China
| | - Long Lin
- College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, 2999 North Renmin Lu, Shanghai, 201620, P. R. China
| | - Xiaohui Chen
- School of Chemical Engineering and Materials, Changzhou Institute of Technology, No. 666 Liaohe Road, Changzhou, 213032, P. R. China
| | - Yiyi Chen
- School of Chemical Engineering and Materials, Changzhou Institute of Technology, No. 666 Liaohe Road, Changzhou, 213032, P. R. China
| | - Wei Wang
- School of Chemical Engineering and Materials, Changzhou Institute of Technology, No. 666 Liaohe Road, Changzhou, 213032, P. R. China
| | - Bo Xu
- College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, 2999 North Renmin Lu, Shanghai, 201620, P. R. China
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13
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More SG, Rupanawar BD, Suryavanshi G. Metal-Free, Acid-Catalyzed 1,6-Conjugate Addition of NH-Sulfoximines to para-Quinone Methides: Accessing to Diarylmethine Imino Sulfanone. J Org Chem 2021; 86:10129-10139. [PMID: 34264087 DOI: 10.1021/acs.joc.1c00869] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
We have reported an efficient and metal-free method for the construction of α-diarylmethine imino sulfanone using acid-catalyzed 1,6-conjugate addition of sulfoximines on para-quinine methides (p-QMs). This method showed broad functional group tolerance and a wide range of substrate scope with good to excellent yield. The excellent protocol exhibits mild reaction conditions with high atom economy. The practicability of the present method was supported by a Gram-scale reaction.
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Affiliation(s)
- Satish G More
- Chemical Engineering & Process Development Division, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pune 411008, India.,Academy of Scientific and Innovative Research, Ghaziabad, Uttar Pradesh 201 002, India
| | - Bapurao D Rupanawar
- Chemical Engineering & Process Development Division, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pune 411008, India.,Academy of Scientific and Innovative Research, Ghaziabad, Uttar Pradesh 201 002, India
| | - Gurunath Suryavanshi
- Chemical Engineering & Process Development Division, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pune 411008, India.,Academy of Scientific and Innovative Research, Ghaziabad, Uttar Pradesh 201 002, India
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14
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Tummanapalli S, Gulipalli KC, Bodige S, Vemula D, Endoori S, Pommidi AK, Punna SK. Direct one step dehydrogenative C-H sulfonimidation of unfunctionalized arenes: A conveneient protocol to emerging medicinal chemistry motifs without prefunctionalized arenes. Tetrahedron Lett 2021. [DOI: 10.1016/j.tetlet.2021.153118] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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15
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Ma D, Wang C, Kong D, Tu Y, Shi P, Bolm C. Palladium‐Catalyzed Carbonylation in the Synthesis of
N
‐Ynonylsulfoximines. Adv Synth Catal 2021. [DOI: 10.1002/adsc.202001440] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Ding Ma
- Institute of Organic Chemistry RWTH Aachen University Landoltweg 1 D-52074 Aachen Germany
| | - Chenyang Wang
- Institute of Organic Chemistry RWTH Aachen University Landoltweg 1 D-52074 Aachen Germany
| | - Deshen Kong
- Institute of Organic Chemistry RWTH Aachen University Landoltweg 1 D-52074 Aachen Germany
| | - Yongliang Tu
- Institute of Organic Chemistry RWTH Aachen University Landoltweg 1 D-52074 Aachen Germany
| | - Peng Shi
- Institute of Organic Chemistry RWTH Aachen University Landoltweg 1 D-52074 Aachen Germany
| | - Carsten Bolm
- Institute of Organic Chemistry RWTH Aachen University Landoltweg 1 D-52074 Aachen Germany
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16
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Wang C, Shi P, Bolm C. Visible light-promoted NH-halogenation of sulfoximines with dichloromethane or dibromomethane. Org Chem Front 2021. [DOI: 10.1039/d1qo00382h] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
In the presence of a hypervalent iodine reagent, N-halo sulfoximines are obtained by catalyst-free visible light-promoted halogenations of their NH-counterparts with dichloro- or dibromomethane as halogen source.
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Affiliation(s)
- Chenyang Wang
- Institute of Organic Chemistry
- RWTH Aachen University
- 52074 Aachen
- Germany
| | - Peng Shi
- Institute of Organic Chemistry
- RWTH Aachen University
- 52074 Aachen
- Germany
| | - Carsten Bolm
- Institute of Organic Chemistry
- RWTH Aachen University
- 52074 Aachen
- Germany
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17
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Sponza AD, Liu D, Chen EP, Shaw A, Diawara L, Chiu M. Synthesis strategies for non-symmetric, photochromic diarylethenes. Org Biomol Chem 2020; 18:7238-7252. [PMID: 32926036 DOI: 10.1039/d0ob01556c] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Diarylethenes (DAEs) represent an important class of photochromes with notable characteristics, like thermally irreversible photoisomerization and high fatigue resistance. Structural diversification of the DAE scaffold has enabled further refinement of photochromic properties and realization of new applications, ranging from advanced materials to tools for studying biological systems. In particular, methods for synthesizing non-symmetric DAE scaffolds, which are typically more challenging to synthesize than their symmetric counterparts, have grown over the past 20 years. These developments are surveyed in this review, with discussion of how access to these compounds has contributed to the improvement of photochromic properties and paved the way for exploring new applications of DAEs. First, non-symmetric DAE structures are classified and their uses and applications are overviewed. Subsequent sections discuss the main strategies that have been used to access non-symmetric DAEs with examples illustrating the impact of non-symmetric DAEs in the growing field of light-controlled molecular systems.
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Affiliation(s)
- Alvaro D Sponza
- Department of Chemistry, Stony Brook University, Stony Brook, NY 11794, USA.
| | - Di Liu
- Department of Chemistry, Stony Brook University, Stony Brook, NY 11794, USA.
| | - Emily P Chen
- Department of Chemistry, Stony Brook University, Stony Brook, NY 11794, USA.
| | - Allison Shaw
- Department of Chemistry, Stony Brook University, Stony Brook, NY 11794, USA.
| | - Lassana Diawara
- Department of Chemistry, Stony Brook University, Stony Brook, NY 11794, USA.
| | - Melanie Chiu
- Department of Chemistry, Stony Brook University, Stony Brook, NY 11794, USA.
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18
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Davies TQ, Tilby MJ, Ren J, Parker NA, Skolc D, Hall A, Duarte F, Willis MC. Harnessing Sulfinyl Nitrenes: A Unified One-Pot Synthesis of Sulfoximines and Sulfonimidamides. J Am Chem Soc 2020; 142:15445-15453. [PMID: 32841007 PMCID: PMC7498162 DOI: 10.1021/jacs.0c06986] [Citation(s) in RCA: 55] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
![]()
Sulfoximines
and sulfonimidamides are promising compounds for medicinal
and agrochemistry. As monoaza analogues of sulfones and sulfonamides,
respectively, they combine good physicochemical properties, high stability,
and the ability to build complexity from a three-dimensional core.
However, a lack of quick and efficient methods to prepare these compounds
has hindered their uptake in molecule discovery programmes. Herein,
we describe a unified, one-pot approach to both sulfoximines and sulfonimidamides,
which exploits the high electrophilicity of sulfinyl nitrenes. We
generate these rare reactive intermediates from a novel sulfinylhydroxylamine
(R–O–N=S=O) reagent through an N–O bond fragmentation
process. Combining sulfinyl nitrenes with carbon and nitrogen nucleophiles
enables the synthesis of sulfoximines and sulfonimidamides in a reaction
time of just 15 min. Alkyl, (hetero)aryl, and alkenyl organometallic
reagents can all be used as the first or second component in the reaction,
while primary and secondary amines, and anilines, all react with high
efficiency as the second nucleophile. The tolerance of the reaction
to steric and electronic factors has allowed for the synthesis of
the most diverse set of sulfoximines and sulfonimidamides yet described.
Experimental and computational investigations support the intermediacy
of sulfinyl nitrenes, with nitrene formation proceeding via a transient
triplet intermediate before reaching a planar singlet species.
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Affiliation(s)
- Thomas Q Davies
- Department of Chemistry, Chemistry Research Laboratories, University of Oxford, Mansfield Road, Oxford OX1 3TA, U.K
| | - Michael J Tilby
- Department of Chemistry, Chemistry Research Laboratories, University of Oxford, Mansfield Road, Oxford OX1 3TA, U.K
| | - Jack Ren
- Department of Chemistry, Chemistry Research Laboratories, University of Oxford, Mansfield Road, Oxford OX1 3TA, U.K
| | - Nicholas A Parker
- Department of Chemistry, Chemistry Research Laboratories, University of Oxford, Mansfield Road, Oxford OX1 3TA, U.K
| | - David Skolc
- UCB Biopharma SPRL, Chemin du Foriest, 1420 Braine-l'Alleud, Belgium
| | - Adrian Hall
- UCB Biopharma SPRL, Chemin du Foriest, 1420 Braine-l'Alleud, Belgium
| | - Fernanda Duarte
- Department of Chemistry, Chemistry Research Laboratories, University of Oxford, Mansfield Road, Oxford OX1 3TA, U.K
| | - Michael C Willis
- Department of Chemistry, Chemistry Research Laboratories, University of Oxford, Mansfield Road, Oxford OX1 3TA, U.K
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