1
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Seling N, Atobe M, Kasten K, Firth JD, Karadakov PB, Goldberg FW, O'Brien P. α-Functionalisation of Cyclic Sulfides Enabled by Lithiation Trapping. Angew Chem Int Ed Engl 2024; 63:e202314423. [PMID: 37984884 PMCID: PMC10952194 DOI: 10.1002/anie.202314423] [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: 09/26/2023] [Revised: 11/16/2023] [Accepted: 11/17/2023] [Indexed: 11/22/2023]
Abstract
A general and straightforward procedure for the lithiation trapping of cyclic sulfides such as tetrahydrothiophene, tetrahydrothiopyran and a thiomorpholine is described. Trapping with a wide range of electrophiles is demonstrated, leading to more than 50 diverse α-substituted saturated sulfur heterocycles. The methodology provides access to a range of α-substituted cyclic sulfides that are not easily synthesised by the currently available methods.
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Affiliation(s)
- Nico Seling
- Department of ChemistryUniversity of YorkYorkYO10 5DDUK
| | - Masakazu Atobe
- Department of ChemistryUniversity of YorkYorkYO10 5DDUK
- Modulus Discovery, Inc.Daiichi Hibiya Building 7th Floor1-18-21 Shimbashi Minato-kuTokyo105-0004Japan
| | - Kevin Kasten
- Department of ChemistryUniversity of YorkYorkYO10 5DDUK
| | | | | | | | - Peter O'Brien
- Department of ChemistryUniversity of YorkYorkYO10 5DDUK
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2
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Linne Y, Birkner M, Flormann J, Lücke D, Becker JA, Kalesse M. Sparteine-Free, Highly Stereoselective Construction of Complex Allylic Alcohols Using 1,2-Metallate Rearrangements. JACS AU 2023; 3:1695-1710. [PMID: 37388702 PMCID: PMC10301690 DOI: 10.1021/jacsau.3c00114] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/08/2023] [Revised: 05/02/2023] [Accepted: 05/03/2023] [Indexed: 07/01/2023]
Abstract
Stereotriads bearing allylic alcohols are privileged structures in natural products, and new methods accessing these in a stereoselective fashion are highly sought after. Toward this goal, we found that the use of chiral polyketide fragments allows for performing the Hoppe-Matteson-Aggarwal rearrangement in the absence of sparteine with high yields and diastereoselectivities, rendering this protocol a highly valuable alternative to the Nozaki-Hiyama-Takai-Kishi reaction. The switch of directing groups in most cases resulted in the reversed stereochemical outcome, which could be explained by conformational analysis on density functional theory level and a Felkin-like model.
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Affiliation(s)
- Yannick Linne
- Institute
of Organic Chemistry, Gottfried Wilhelm
Leibniz Universität Hannover, Schneiderberg 1b, 30167 Hannover, Germany
| | - Maike Birkner
- Institute
of Organic Chemistry, Gottfried Wilhelm
Leibniz Universität Hannover, Schneiderberg 1b, 30167 Hannover, Germany
| | - Jan Flormann
- Institute
of Physical Chemistry and Electrochemistry, Gottfried Wilhelm Leibniz Universität Hannover, Callinstraße 3a, 30167 Hannover, Germany
| | - Daniel Lücke
- Institute
of Organic Chemistry, Gottfried Wilhelm
Leibniz Universität Hannover, Schneiderberg 1b, 30167 Hannover, Germany
| | - Jörg August Becker
- Institute
of Physical Chemistry and Electrochemistry, Gottfried Wilhelm Leibniz Universität Hannover, Callinstraße 3a, 30167 Hannover, Germany
| | - Markus Kalesse
- Institute
of Organic Chemistry, Gottfried Wilhelm
Leibniz Universität Hannover, Schneiderberg 1b, 30167 Hannover, Germany
- Centre
of Biomolecular Drug Research (BMWZ), Gottfried
Wilhelm Leibniz Universität Hannover, Schneiderberg 38, 30167 Hannover, Germany
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3
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Kremsmair A, Wilke HR, Harenberg JH, Bissinger BRG, Simon MM, Alandini N, Knochel P. In Situ Quench Reactions of Enantioenriched Secondary Alkyllithium Reagents in Batch and Continuous Flow Using an I/Li-Exchange. Angew Chem Int Ed Engl 2023; 62:e202214377. [PMID: 36269064 PMCID: PMC10100098 DOI: 10.1002/anie.202214377] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2022] [Indexed: 12/05/2022]
Abstract
We report a practical in situ quench (ISQ) procedure involving the generation of chiral secondary alkyllithiums from secondary alkyl iodides (including functionalized iodides bearing an ester or a nitrile) in the presence of various electrophiles such as aldehydes, ketones, Weinreb amides, isocyanates, sulfides, or boronates. This ISQ-reaction allowed the preparation of a broad range of optically enriched ketones, alcohols, amides, sulfides and boronic acid esters in typically 90-98 % ee. Remarkably, these reactions were performed at -78 °C or -40 °C in batch. A continuous flow set-up permitted reaction temperatures between -20 °C and 0 °C and allowed a scale-up up to a 40-fold without further optimization.
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Affiliation(s)
- Alexander Kremsmair
- Department Chemie, Ludwig-Maximilians-Universität München, Butenandtstrasse 5-13, Haus F, 81377, München, Germany
| | - Henrik R Wilke
- Department Chemie, Ludwig-Maximilians-Universität München, Butenandtstrasse 5-13, Haus F, 81377, München, Germany
| | - Johannes H Harenberg
- Department Chemie, Ludwig-Maximilians-Universität München, Butenandtstrasse 5-13, Haus F, 81377, München, Germany
| | - Benjamin R G Bissinger
- Department Chemie, Ludwig-Maximilians-Universität München, Butenandtstrasse 5-13, Haus F, 81377, München, Germany
| | - Matthias M Simon
- Department Chemie, Ludwig-Maximilians-Universität München, Butenandtstrasse 5-13, Haus F, 81377, München, Germany
| | - Nurtalya Alandini
- Department Chemie, Ludwig-Maximilians-Universität München, Butenandtstrasse 5-13, Haus F, 81377, München, Germany
| | - Paul Knochel
- Department Chemie, Ludwig-Maximilians-Universität München, Butenandtstrasse 5-13, Haus F, 81377, München, Germany
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4
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Jones SP, Firth JD, Wheldon MC, Atobe M, Hubbard RE, Blakemore DC, De Fusco C, Lucas SCC, Roughley SD, Vidler LR, Whatton MA, Woolford AJA, Wrigley GL, O'Brien P. Exploration of piperidine 3D fragment chemical space: synthesis and 3D shape analysis of fragments derived from 20 regio- and diastereoisomers of methyl substituted pipecolinates. RSC Med Chem 2022; 13:1614-1620. [PMID: 36545433 PMCID: PMC9749955 DOI: 10.1039/d2md00239f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2022] [Accepted: 09/26/2022] [Indexed: 11/07/2022] Open
Abstract
Fragment-based drug discovery is now widely adopted for lead generation in the pharmaceutical industry. However, fragment screening collections are often predominantly populated with flat, 2D molecules. Herein, we report the synthesis of piperidine-based 3D fragment building blocks - 20 regio- and diastereoisomers of methyl substituted pipecolinates using simple and general synthetic methods. cis-Piperidines, accessed through a pyridine hydrogenation were transformed into their trans-diastereoisomers using conformational control and unified reaction conditions. Additionally, diastereoselective lithiation/trapping was utilised to access trans-piperidines. Analysis of a virtual library of fragments derived from the 20 cis- and trans-disubstituted piperidines showed that it consisted of 3D molecules with suitable molecular properties to be used in fragment-based drug discovery programs.
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Affiliation(s)
- S. Paul Jones
- Department of Chemistry, University of YorkHeslingtonYorkYO10 5DDUK
| | - James D. Firth
- Department of Chemistry, University of YorkHeslingtonYorkYO10 5DDUK
| | - Mary C. Wheldon
- Department of Chemistry, University of YorkHeslingtonYorkYO10 5DDUK
| | - Masakazu Atobe
- Department of Chemistry, University of YorkHeslingtonYorkYO10 5DDUK,Asahi Kasei Pharma Corporation632-1 Mifuku, IzunokuniShizuoka 410-2321Japan
| | - Roderick E. Hubbard
- Department of Chemistry, University of YorkHeslingtonYorkYO10 5DDUK,Vernalis (R&D) Ltd.Granta Park, AbingtonCambridgeCB21 6GBUK
| | | | - Claudia De Fusco
- Bayer AG, Research and Development, Pharmaceuticals, Synthetic Modalities13353BerlinGermany
| | - Simon C. C. Lucas
- Hit Discovery, Discovery Sciences, R&D, AstraZenecaCambridgeCB4 0WGUK
| | | | - Lewis R. Vidler
- Amphista TherapeuticsThe Cori Building, Granta Park, Great AbingtonCambridge CB21 6GQUK
| | - Maria Ann Whatton
- Evotec (UK) LtdDorothy Crowfoot Hodgkin Campus, 114 Innovation Drive, Milton Park, AbingdonOxonOX14 4RZUK
| | | | | | - Peter O'Brien
- Department of Chemistry, University of YorkHeslingtonYorkYO10 5DDUK
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5
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Rekhroukh F, Zhang L, Kong RY, White AJP, Crimmin MR. Stereoselective insertion of cyclopropenes into Mg-Mg bonds. Chem Commun (Camb) 2022; 58:8282-8285. [PMID: 35791826 DOI: 10.1039/d2cc02931f] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The reaction of cyclopropenes with compounds containing Mg-Mg bonds is reported. 1,2-Dimagnesiation occurs exclusively by syn-addition to the least hindered face of the alkene forming a single diastereomeric product. DFT calculations support a concerted and stereoselective mechanism. These findings shed new light on the stereochemistry of reactions involving magnesium reagents.
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Affiliation(s)
- Feriel Rekhroukh
- Department of Chemistry, Molecular Sciences Research Hub, Imperial College London, 82 Wood Lane, Shepherds Bush, London, W12 0BZ, UK.
| | - Linxing Zhang
- Department of Chemistry, Molecular Sciences Research Hub, Imperial College London, 82 Wood Lane, Shepherds Bush, London, W12 0BZ, UK. .,Shenzhen Bay Laboratory, Shenzhen, 518132, P. R. China
| | - Richard Y Kong
- Department of Chemistry, Molecular Sciences Research Hub, Imperial College London, 82 Wood Lane, Shepherds Bush, London, W12 0BZ, UK.
| | - Andrew J P White
- Department of Chemistry, Molecular Sciences Research Hub, Imperial College London, 82 Wood Lane, Shepherds Bush, London, W12 0BZ, UK.
| | - Mark R Crimmin
- Department of Chemistry, Molecular Sciences Research Hub, Imperial College London, 82 Wood Lane, Shepherds Bush, London, W12 0BZ, UK.
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6
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Kestemont JP, Frost JR, Jacq J, Pasau P, Perl F, Brown J, Tissot M. Scale-Up and Optimization of a Continuous Flow Carboxylation of N-Boc-4,4-difluoropiperidine Using s-BuLi in THF. Org Process Res Dev 2022. [DOI: 10.1021/acs.oprd.1c00092] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
| | | | - Jérôme Jacq
- UCB Biopharma SPRL, Avenue de l’industrie, 1420 Braine l’Alleud, Belgium
| | - Patrick Pasau
- UCB Biopharma SPRL, Avenue de l’industrie, 1420 Braine l’Alleud, Belgium
| | - Frédéric Perl
- UCB Biopharma SPRL, Avenue de l’industrie, 1420 Braine l’Alleud, Belgium
| | - Julien Brown
- UCB, 216 Bath Road, Slough SL1 3WE, United Kingdom
| | - Matthieu Tissot
- UCB Biopharma SPRL, Avenue de l’industrie, 1420 Braine l’Alleud, Belgium
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7
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8
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Bennett SH, Fawcett A, Denton EH, Biberger T, Fasano V, Winter N, Aggarwal VK. Difunctionalization of C-C σ-Bonds Enabled by the Reaction of Bicyclo[1.1.0]butyl Boronate Complexes with Electrophiles: Reaction Development, Scope, and Stereochemical Origins. J Am Chem Soc 2020; 142:16766-16775. [PMID: 32885974 DOI: 10.1021/jacs.0c07357] [Citation(s) in RCA: 40] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Difunctionalization reactions of C-C σ-bonds have the potential to streamline access to molecules that would otherwise be difficult to prepare. However, the development of such reactions is challenging because C-C σ-bonds are typically unreactive. Exploiting the high ring-strain energy of polycyclic carbocycles is a common strategy to weaken and facilitate the reaction of C-C σ-bonds, but there are limited examples of highly strained C-C σ-bonds being used in difunctionalization reactions. We demonstrate that highly strained bicyclo[1.1.0]butyl boronate complexes (strain energy ca. 65 kcal/mol), which were prepared by reacting boronic esters with bicyclo[1.1.0]butyl lithium, react with electrophiles to achieve the diastereoselective difunctionalization of the strained central C-C σ-bond of the bicyclo[1.1.0]butyl unit. The reaction shows broad substrate scope, with a range of different electrophiles and boronic esters being successfully employed to form a diverse set of 1,1,3-trisubstituted cyclobutanes (>50 examples) with high diastereoselectivity. The high diastereoselectivity observed has been rationalized based on a combination of experimental data and DFT calculations, which suggests that separate concerted and stepwise reaction mechanisms are operating, depending upon the migrating substituent and electrophile used.
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Affiliation(s)
- Steven H Bennett
- School of Chemistry, University of Bristol, Cantock's Close, Bristol BS8 1TS, United Kingdom
| | - Alexander Fawcett
- School of Chemistry, University of Bristol, Cantock's Close, Bristol BS8 1TS, United Kingdom
| | - Elliott H Denton
- School of Chemistry, University of Bristol, Cantock's Close, Bristol BS8 1TS, United Kingdom
| | - Tobias Biberger
- School of Chemistry, University of Bristol, Cantock's Close, Bristol BS8 1TS, United Kingdom
| | - Valerio Fasano
- School of Chemistry, University of Bristol, Cantock's Close, Bristol BS8 1TS, United Kingdom
| | - Nils Winter
- School of Chemistry, University of Bristol, Cantock's Close, Bristol BS8 1TS, United Kingdom
| | - Varinder K Aggarwal
- School of Chemistry, University of Bristol, Cantock's Close, Bristol BS8 1TS, United Kingdom
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9
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Nikol A, Zhang Z, Chelouan A, Falivene L, Cavallo L, Herrera A, Heinemann FW, Escalona A, Frieß S, Grasruck A, Dorta R. Tricyclic Sulfoxide–Alkene Hybrid Ligands for Chiral Rh(I) Complexes: The “Matched” Diastereomer Catalyzes Asymmetric C–C Bond Formations. Organometallics 2020. [DOI: 10.1021/acs.organomet.0c00094] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Alexander Nikol
- Department Chemie und Pharmazie, Anorganische und Allgemeine Chemie, Friedrich-Alexander-Universität Erlangen-Nürnberg, Egerlandstraße 1, 91058 Erlangen, Germany
| | - Ziyun Zhang
- Catalysis Research Center, Physical Sciences and Engineering Division, King Abdullah University of Science and Technology, Thuwal, Saudi Arabia
| | - Ahmed Chelouan
- Department Chemie und Pharmazie, Anorganische und Allgemeine Chemie, Friedrich-Alexander-Universität Erlangen-Nürnberg, Egerlandstraße 1, 91058 Erlangen, Germany
| | - Laura Falivene
- Catalysis Research Center, Physical Sciences and Engineering Division, King Abdullah University of Science and Technology, Thuwal, Saudi Arabia
| | - Luigi Cavallo
- Catalysis Research Center, Physical Sciences and Engineering Division, King Abdullah University of Science and Technology, Thuwal, Saudi Arabia
| | - Alberto Herrera
- Department Chemie und Pharmazie, Anorganische und Allgemeine Chemie, Friedrich-Alexander-Universität Erlangen-Nürnberg, Egerlandstraße 1, 91058 Erlangen, Germany
| | - Frank W. Heinemann
- Department Chemie und Pharmazie, Anorganische und Allgemeine Chemie, Friedrich-Alexander-Universität Erlangen-Nürnberg, Egerlandstraße 1, 91058 Erlangen, Germany
| | - Ana Escalona
- Department Chemie und Pharmazie, Anorganische und Allgemeine Chemie, Friedrich-Alexander-Universität Erlangen-Nürnberg, Egerlandstraße 1, 91058 Erlangen, Germany
| | - Sibylle Frieß
- Department Chemie und Pharmazie, Anorganische und Allgemeine Chemie, Friedrich-Alexander-Universität Erlangen-Nürnberg, Egerlandstraße 1, 91058 Erlangen, Germany
| | - Alexander Grasruck
- Department Chemie und Pharmazie, Anorganische und Allgemeine Chemie, Friedrich-Alexander-Universität Erlangen-Nürnberg, Egerlandstraße 1, 91058 Erlangen, Germany
| | - Romano Dorta
- Department Chemie und Pharmazie, Anorganische und Allgemeine Chemie, Friedrich-Alexander-Universität Erlangen-Nürnberg, Egerlandstraße 1, 91058 Erlangen, Germany
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10
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Zefirova ON, Nurieva EV, Wobith B, Schulz S, Zefirov NA, Kuznetsov SA. Novel colchicine conjugate with unusual effect on the microtubules of cancer cells. PURE APPL CHEM 2020. [DOI: 10.1515/pac-2019-1215] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
Colchicine derivative bearing substituted bispidine moiety, namely N-{7-(3,7-Di-(tert-butoxycarbonyl)-1,5-dimethyl-3,7-diazabicyclo[3.3.1]nonan-9-yl)-oxy-7-oxoheptanoyl}-N-deacetylcolchicine, was synthesized and tested for its effect on the net of microtubules (MT) in lung cancer cells A549. The compound induced not only MT depolymerization but stimulated the formation of small tubulin aggregates and long tubulin fibrils localized mainly around nuclei. The assemblies were morphologically different from tubulin clusters induced by structurally related anticancer agent tubuloclustin. The biotests data demonstrate that the depolymerization takes place for both pure tubulin and tubulin in cellulo, while fibrils are formed only in the cells. The research data of structure–activity relationship for several similar colchicine derivatives synthesized in the work give evidence for the proposition that the initial conjugate may interact not only with tubulin and MT in the cells, but also with MT-associated proteins, involved in the process of tubulin polymerization. The ability to affect simultaneously MAP – tubulin interactions opens attractive prospects in the design of novel anticancer agents.
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Affiliation(s)
- Olga N. Zefirova
- Department of Chemistry , Lomonosov Moscow State University , 119992 Moscow , Russian Federation
- Institute of Physiologically active compounds, Russian Academy of Sciences , 142432 Chernogolovka, Noginsk Area , Moscow Region , Russian Federation , Tel.: +74959391243
| | - Evgenia V. Nurieva
- Department of Chemistry , Lomonosov Moscow State University , 119992 Moscow , Russian Federation
| | - Birgit Wobith
- Institute of Biological Sciences, University of Rostock , D-18059 Rostock , Germany
| | - Svetlana Schulz
- Institute of Biological Sciences, University of Rostock , D-18059 Rostock , Germany
| | - Nikolay A. Zefirov
- Department of Chemistry , Lomonosov Moscow State University , 119992 Moscow , Russian Federation
- Institute of Physiologically active compounds, Russian Academy of Sciences , 142432 Chernogolovka, Noginsk Area , Moscow Region , Russian Federation
| | - Sergei A. Kuznetsov
- Institute of Biological Sciences, University of Rostock , D-18059 Rostock , Germany
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11
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Kaiser D, Klose I, Oost R, Neuhaus J, Maulide N. Bond-Forming and -Breaking Reactions at Sulfur(IV): Sulfoxides, Sulfonium Salts, Sulfur Ylides, and Sulfinate Salts. Chem Rev 2019; 119:8701-8780. [PMID: 31243998 PMCID: PMC6661881 DOI: 10.1021/acs.chemrev.9b00111] [Citation(s) in RCA: 440] [Impact Index Per Article: 88.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2019] [Indexed: 12/13/2022]
Abstract
Organosulfur compounds have long played a vital role in organic chemistry and in the development of novel chemical structures and architectures. Prominent among these organosulfur compounds are those involving a sulfur(IV) center, which have been the subject of countless investigations over more than a hundred years. In addition to a long list of textbook sulfur-based reactions, there has been a sustained interest in the chemistry of organosulfur(IV) compounds in recent years. Of particular interest within organosulfur chemistry is the ease with which the synthetic chemist can effect a wide range of transformations through either bond formation or bond cleavage at sulfur. This review aims to cover the developments of the past decade in the chemistry of organic sulfur(IV) molecules and provide insight into both the wide range of reactions which critically rely on this versatile element and the diverse scaffolds that can thereby be synthesized.
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Affiliation(s)
- Daniel Kaiser
- Institute
of Organic Chemistry, University of Vienna, Währinger Strasse 38, 1090 Vienna, Austria
| | - Immo Klose
- Institute
of Organic Chemistry, University of Vienna, Währinger Strasse 38, 1090 Vienna, Austria
| | - Rik Oost
- Institute
of Organic Chemistry, University of Vienna, Währinger Strasse 38, 1090 Vienna, Austria
| | - James Neuhaus
- Institute
of Organic Chemistry, University of Vienna, Währinger Strasse 38, 1090 Vienna, Austria
| | - Nuno Maulide
- Institute
of Organic Chemistry, University of Vienna, Währinger Strasse 38, 1090 Vienna, Austria
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12
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Monticelli S, Holzer W, Langer T, Roller A, Olofsson B, Pace V. Sustainable Asymmetric Organolithium Chemistry: Enantio- and Chemoselective Acylations through Recycling of Solvent, Sparteine, and Weinreb "Amine". CHEMSUSCHEM 2019; 12:1147-1154. [PMID: 30614208 PMCID: PMC6704367 DOI: 10.1002/cssc.201802815] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/02/2018] [Revised: 12/20/2018] [Indexed: 05/10/2023]
Abstract
The well-established Hoppe-Beak chemistry, which involves enantioselective generation of organolithium compounds in the presence of (-)-sparteine, was revisited and applied to unprecedented acylations with Weinreb amides to access highly enantioenriched α-oxyketones and cyclic α-aminoketones. Recycling of the sustainable solvent cyclopentyl methyl ether, sparteine, and the released Weinreb "amine" [HNMe(OMe)] was possible through a simple work-up procedure that enabled full recovery of these precious materials. The methodology features a robust scope and flexibility, thus allowing the enantioselective preparation of scaffolds amenable of further derivatization.
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Affiliation(s)
- Serena Monticelli
- Department of Pharmaceutical ChemistryUniversity of ViennaAlthanstrasse,14Vienna1090Austria
| | - Wolfgang Holzer
- Department of Pharmaceutical ChemistryUniversity of ViennaAlthanstrasse,14Vienna1090Austria
| | - Thierry Langer
- Department of Pharmaceutical ChemistryUniversity of ViennaAlthanstrasse,14Vienna1090Austria
| | - Alexander Roller
- X-Ray Structure Analysis CenterUniversity of ViennaWaehringerstrasse 42Vienna1090Austria
| | - Berit Olofsson
- Department of Organic Chemistry, Arrhenius LaboratoryStockholm UniversitySe-106 91StockholmSweden
| | - Vittorio Pace
- Department of Pharmaceutical ChemistryUniversity of ViennaAlthanstrasse,14Vienna1090Austria
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13
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Ji YZ, Li HJ, Zhang JY, Wu YC. Sodium Arenesulfinates-Involved Sulfinate Synthesis Revisited: Improved Synthesis and Revised Reaction Mechanism. European J Org Chem 2019. [DOI: 10.1002/ejoc.201900097] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Yuan-Zhao Ji
- School of Marine Science and Technology; Harbin Institute of Technology; 2 Wenhuaxi Road Weihai 264209 P.R. China
| | - Hui-Jing Li
- School of Marine Science and Technology; Harbin Institute of Technology; 2 Wenhuaxi Road Weihai 264209 P.R. China
| | - Jin-Yu Zhang
- School of Marine Science and Technology; Harbin Institute of Technology; 2 Wenhuaxi Road Weihai 264209 P.R. China
| | - Yan-Chao Wu
- School of Marine Science and Technology; Harbin Institute of Technology; 2 Wenhuaxi Road Weihai 264209 P.R. China
- Beijing National Laboratory for Molecular Sciences (BNLMS); Institute of Chemistry Chinese Academy of Sciences; No.2, 1st North Street, Zhongguancun Beijing 100190 P.R. China
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14
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Hyde AM, Ashley ER. Organometallic Approaches to [3.1.0] Bicycles in Process Chemistry. TOP ORGANOMETAL CHEM 2019. [DOI: 10.1007/3418_2019_30] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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15
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Miura M, Nakakita T, Toriyama M, Motohashi S. An Efficient Synthesis of
exo
/
endo
‐Hydroxylated Cyclohexenones by Thiol/Amine‐Mediated Tandem Aldol–[2,3]‐Sigmatropic Rearrangement: Amine‐Dependent Complementary Regioselectivity. ASIAN J ORG CHEM 2018. [DOI: 10.1002/ajoc.201800081] [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)
- Motofumi Miura
- School of PharmacyNihon University 7-7-1 Narashinodai Funabashi-shi Chiba 274-8555 Japan
| | - Toshinori Nakakita
- School of PharmacyNihon University 7-7-1 Narashinodai Funabashi-shi Chiba 274-8555 Japan
- Faculty of Pharmaceutical ScienceAomori University 2-3-1 Kobato Aomori-shi Aomori 030-0943 Japan
| | - Masaharu Toriyama
- School of PharmacyNihon University 7-7-1 Narashinodai Funabashi-shi Chiba 274-8555 Japan
| | - Shigeyasu Motohashi
- School of PharmacyNihon University 7-7-1 Narashinodai Funabashi-shi Chiba 274-8555 Japan
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16
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Han J, Soloshonok VA, Klika KD, Drabowicz J, Wzorek A. Chiral sulfoxides: advances in asymmetric synthesis and problems with the accurate determination of the stereochemical outcome. Chem Soc Rev 2017; 47:1307-1350. [PMID: 29271432 DOI: 10.1039/c6cs00703a] [Citation(s) in RCA: 157] [Impact Index Per Article: 22.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Chiral sulfoxides are in extremely high demand in nearly every sector of the chemical industry concerned with the design and development of new synthetic reagents, drugs, and functional materials. The primary objective of this review is to update readers on the latest developments from the past five years (2011-2016) in the preparation of optically active sulfoxides. Methodologies covered include catalytic asymmetric sulfoxidation using either chemical, enzymatic, or hybrid biocatalytic means; kinetic resolution involving oxidation to sulfones, reduction to sulfides, modification of side chains, and imidation to sulfoximines; as well as various other methods including nucleophilic displacement at the sulfur atom for the desymmetrization of achiral sulfoxides, enantioselective recognition and separation based on either metal-organic frameworks (MOF's) or host-guest chemistry, and the Horner-Wadsworth-Emmons reaction. A second goal of this work concerns a critical discussion of the problem of the accurate determination of the stereochemical outcome of a reaction due to the self-disproportionation of enantiomers (SDE) phenomenon, particularly as it relates to chiral sulfoxides. The SDE is a little-appreciated phenomenon that can readily and spontaneously occur for scalemic samples when subjected to practically any physicochemical process. It has now been unequivocally demonstrated that ignorance in the SDE phenomenon inevitably leads to erroneous interpretation of the stereochemical outcome of catalytic enantioselective reactions, in particular, for the synthesis of chiral sulfoxides. It is hoped that this two-pronged approach to covering the chemistry of chiral sulfoxides will be appealing, engaging, and motivating for current research-active authors to respond to in their future publications in this exciting area of current research.
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Affiliation(s)
- Jianlin Han
- School of Chemistry and Chemical Engineering, State Key Laboratory of Coordination Chemistry, Jiangsu Key Laboratory of Advanced Organic Materials, Nanjing University, 210093 Nanjing, China.
| | - Vadim A Soloshonok
- Department of Organic Chemistry I, Faculty of Chemistry, University of the Basque Country UPV/EHU, Paseo Manuel Lardizábal 3, 20018 San Sebastián, Spain. and IKERBASQUE, Basque Foundation for Science, Alameda Urquijo 36-5, Plaza Bizkaia, 48011 Bilbao, Spain
| | - Karel D Klika
- Molecular Structure Analysis, German Cancer Research Center (DKFZ), Im Neuenheimer Feld 280, D-69009 Heidelberg, Germany.
| | - Józef Drabowicz
- Department of Heterooganic Chemistry, Center of Molecular and Macromolecular Studies, Polish Academy of Sciences, Sienkiewicza 112, 90-363 Łódź, Poland and Institute of Chemistry, Environmental Protection and Biotechnology, Jan Długosz University in Częstochowa, Armii Krajowej 13/15, 42-201 Częstochowa, Poland
| | - Alicja Wzorek
- Department of Organic Chemistry I, Faculty of Chemistry, University of the Basque Country UPV/EHU, Paseo Manuel Lardizábal 3, 20018 San Sebastián, Spain. and Institute of Chemistry, Jan Kochanowski University in Kielce, Swiętokrzyska 15G, 25-406 Kielce, Poland.
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17
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Chawner SJ, Cases‐Thomas MJ, Bull JA. Divergent Synthesis of Cyclopropane-Containing Lead-Like Compounds, Fragments and Building Blocks through a Cobalt Catalyzed Cyclopropanation of Phenyl Vinyl Sulfide. European J Org Chem 2017; 2017:5015-5024. [PMID: 28983191 PMCID: PMC5601191 DOI: 10.1002/ejoc.201701030] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2017] [Indexed: 01/08/2023]
Abstract
Cyclopropanes provide important design elements in medicinal chemistry and are widely present in drug compounds. Here we describe a strategy and extensive synthetic studies for the preparation of a diverse collection of cyclopropane-containing lead-like compounds, fragments and building blocks exploiting a single precursor. The bifunctional cyclopropane (E/Z)-ethyl 2-(phenylsulfanyl)-cyclopropane-1-carboxylate was designed to allow derivatization through the ester and sulfide functionalities to topologically varied compounds designed to fit in desirable chemical space for drug discovery. A cobalt-catalyzed cyclopropanation of phenyl vinyl sulfide affords these scaffolds on multigram scale. Divergent, orthogonal derivatization is achieved through hydrolysis, reduction, amidation and oxidation reactions as well as sulfoxide-magnesium exchange/functionalization. The cyclopropyl Grignard reagent formed from sulfoxide exchange is stable at 0 °C for > 2 h, which enables trapping with various electrophiles and Pd-catalyzed Negishi cross-coupling reactions. The library prepared, as well as a further virtual elaboration, is analyzed against parameters of lipophilicity (ALog P), MW and molecular shape by using the LLAMA (Lead-Likeness and Molecular Analysis) software, to illustrate the success in generating lead-like compounds and fragments.
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Affiliation(s)
- Stephen J. Chawner
- Department of ChemistryImperial College LondonSouth KensingtonSW7 2AZLondonUK
| | - Manuel J. Cases‐Thomas
- Lilly Research CentreEli Lilly and CompanyErl Wood Manor, Sunninghill RoadGU20 6PHWindleshamUK
| | - James A. Bull
- Department of ChemistryImperial College LondonSouth KensingtonSW7 2AZLondonUK
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18
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Casoni G, Kucukdisli M, Fordham JM, Burns M, Myers EL, Aggarwal VK. α-Sulfinyl Benzoates as Precursors to Li and Mg Carbenoids for the Stereoselective Iterative Homologation of Boronic Esters. J Am Chem Soc 2017; 139:11877-11886. [PMID: 28812893 DOI: 10.1021/jacs.7b05457] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
The stereoselective reagent-controlled homologation of boronic esters is one of a small number of iteratable synthetic transformations that if automated could form the basis of a veritable molecule-making machine. Recently, α-stannyl triisopropylbenzoates and α-sulfinyl chlorides have emerged as useful building blocks for the iterative homologation of boronic esters. However, α-stannyl benzoates need to be prepared using stoichiometric amounts of the (+)- or (-)-enantiomer of the scarcely available and expensive diamine sparteine; also, these building blocks, together with the byproducts that are generated during homologation, are perceived as being toxic. On the other hand, α-sulfinyl chlorides are difficult to prepare with high levels of enantiopurity and are prone to undergo deleterious acid-base side-reactions under the reaction conditions for homologation, leading to low stereospecificity. Here, we show that the use of a hybrid of these two building blocks, namely, α-sulfinyl triisopropylbenzoates, largely overcomes the above drawbacks. Through either the sulfinylation of α-magnesiated benzoates with either enantiomer of Andersen's readily available menthol-derived sulfinate or the α-alkylation of enantiopure S-chiral α-sulfinyl benzoates, we have prepared a range of highly enantiopure mono- and disubstituted α-sulfinyl benzoates, some bearing sensitive functional groups. Barbier-type reaction conditions have been developed that allow these building blocks to be converted into lithium (t-BuLi) and magnesium (i-PrMgCl·LiCl) carbenoids in the presence of boronic esters, thus allowing efficient and highly stereospecific homologation. The use of magnesium carbenoids allows carbon chains to be grown with the incorporation of sensitive functional groups, such as alkyl/aryl halides, azides, and esters. The use of lithium carbenoids, which are less sensitive to steric hindrance, allows sterically encumbered carbon-carbon bonds to be forged. We have also shown that these building blocks can be used consecutively in three- and four-step iterative homologation processes, without intervening column chromatography, to give contiguously substituted carbon chains with very high levels of enantio- and diastereoselectivity.
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Affiliation(s)
- Giorgia Casoni
- School of Chemistry, University of Bristol , Cantock's Close, BS8 1TS, United Kingdom
| | - Murat Kucukdisli
- School of Chemistry, University of Bristol , Cantock's Close, BS8 1TS, United Kingdom
| | - James M Fordham
- School of Chemistry, University of Bristol , Cantock's Close, BS8 1TS, United Kingdom
| | - Matthew Burns
- School of Chemistry, University of Bristol , Cantock's Close, BS8 1TS, United Kingdom
| | - Eddie L Myers
- School of Chemistry, University of Bristol , Cantock's Close, BS8 1TS, United Kingdom
| | - Varinder K Aggarwal
- School of Chemistry, University of Bristol , Cantock's Close, BS8 1TS, United Kingdom
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19
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Green JC, Joannou MV, Murray SA, Zanghi JM, Meek SJ. Enantio- and Diastereoselective Synthesis of Hydroxy Bis(boronates) via Cu-Catalyzed Tandem Borylation/1,2-Addition. ACS Catal 2017; 7:4441-4445. [PMID: 29520326 PMCID: PMC5837064 DOI: 10.1021/acscatal.7b01123] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Catalytic enantioselective synthesis of 1-hydroxy-2,3-bisboronate esters through multicomponent borylation/1,2-addition is reported. Catalyst and substrates are readily available, form both a C-B and C-C bond, and generate up to three contiguous stereocenters. The reaction is tolerant of aryl, vinyl, and alkyl aldehydes and ketones in up to 95% yield, >20:1 dr, and 99:1 er. Intramolecular additions to aldehydes and ketones result in stereodivergent processes. The hydroxy bis(boronate) ester products are amenable to site-selective chemical elaboration.
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Affiliation(s)
| | | | - Stephanie A. Murray
- Department of Chemistry, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599-3290
| | - Joseph M. Zanghi
- Department of Chemistry, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599-3290
| | - Simon J. Meek
- Department of Chemistry, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599-3290
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20
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Sadhukhan A, Hobbs MC, Meijer AJHM, Coldham I. Highly enantioselective metallation-substitution alpha to a chiral nitrile. Chem Sci 2017; 8:1436-1441. [PMID: 28616143 PMCID: PMC5460602 DOI: 10.1039/c6sc03712g] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2016] [Accepted: 10/24/2016] [Indexed: 11/21/2022] Open
Abstract
Nitrile anions do not necessarily lack stereochemical integrity and we show good results for stereospecific reaction with a simple magnesium base.
We report the deprotonation of a chiral nitrile and reaction of the resulting chiral organometallic species with a variety of electrophiles to give highly enantiomerically enriched 2-substituted nitrile products. The nitrile was treated with TMPMgCl and the resulting anion, an asymmetric alpha cyano Grignard species, was found to be configurationally stable at low temperature for a short time (half-life several minutes at –104 °C).
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Affiliation(s)
- Arghya Sadhukhan
- Department of Chemistry , University of Sheffield , Brook Hill , Sheffield , S3 7HF , UK .
| | - Melanie C Hobbs
- Department of Chemistry , University of Sheffield , Brook Hill , Sheffield , S3 7HF , UK .
| | - Anthony J H M Meijer
- Department of Chemistry , University of Sheffield , Brook Hill , Sheffield , S3 7HF , UK .
| | - Iain Coldham
- Department of Chemistry , University of Sheffield , Brook Hill , Sheffield , S3 7HF , UK .
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21
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Barrett MJ, Khan GF, Davies PW, Grainger RS. Alkynyl sulfoxides as α-sulfinyl carbene equivalents: gold-catalysed oxidative cyclopropanation. Chem Commun (Camb) 2017; 53:5733-5736. [DOI: 10.1039/c7cc02244a] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Gold catalysed oxidation of alkynyl sulfoxides provides access to a desirable α-sulfinyl metal carbene reactivity profile that is inaccessible using diazo chemistry.
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22
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Ji YZ, Wang M, Li HJ, Liu Y, Wu YC. Direct Sulfination of Nonactivated Alcohols with Arylsulfonylmethyl Isocyanides. European J Org Chem 2016. [DOI: 10.1002/ejoc.201600629] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Yuan-Zhao Ji
- School of Marine Science and Technology; Harbin Institute of Technology; No. 2, Wenhuaxi Road 264209 Weihai P. R. China
| | - Meirong Wang
- School of Materials Science and Engineering; Harbin Institute of Technology; No. 2, Wenhuaxi Road 264209 Weihai P. R. China
| | - Hui-Jing Li
- School of Marine Science and Technology; Harbin Institute of Technology; No. 2, Wenhuaxi Road 264209 Weihai P. R. China
| | - Ying Liu
- School of Marine Science and Technology; Harbin Institute of Technology; No. 2, Wenhuaxi Road 264209 Weihai P. R. China
| | - Yan-Chao Wu
- School of Marine Science and Technology; Harbin Institute of Technology; No. 2, Wenhuaxi Road 264209 Weihai P. R. China
- Beijing National Laboratory for Molecular Sciences (BNLMS); Institute of Chemistry Chinese Academy of Sciences; No.2, 1st North Street, Zhongguancun 100190 Beijing P. R. China
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23
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Firth JD, O’Brien P, Ferris L. Synthesis of Enantiopure Piperazines via Asymmetric Lithiation–Trapping of N-Boc Piperazines: Unexpected Role of the Electrophile and Distal N-Substituent. J Am Chem Soc 2015; 138:651-9. [DOI: 10.1021/jacs.5b11288] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- James D. Firth
- Department
of Chemistry, University of York, Heslington, York YO10 5DD, U.K
| | - Peter O’Brien
- Department
of Chemistry, University of York, Heslington, York YO10 5DD, U.K
| | - Leigh Ferris
- AstraZeneca U.K., Macclesfield, Cheshire SK10 2NA, U.K
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24
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Doulcet J, Stephenson GR. The Use of (-)-Sparteine/Organolithium Reagents for the Enantioselective Lithiation of 7,8-Dipropyltetrathia[7]helicene: Single and Double Kinetic Resolution Procedures. Chemistry 2015; 21:18677-89. [PMID: 26560342 DOI: 10.1002/chem.201502958] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2015] [Indexed: 11/11/2022]
Abstract
The effect of organolithium reagent (RLi: R=nBu, iPr, sBu, tBu), solvent (diethyl ether, diethyl ether/THF and MTBE), and stoichiometry on the (-)-sparteine-mediated silylation of 7,8-dipropyltetrathia[7]helicene shows that, unusually, substantially more than 0.5 equivalent of RLi (R=iPr, sBu, tBu) and a large excess of (-)-sparteine (R=nBu, sBu) is often needed to achieve substantial conversions and good ee values. With nBuLi, however, just one equivalent of the organolithium reagent is sufficient to obtain high conversions. Our best results were obtained using the convenient tBuLi/(-)-sparteine adduct with which the need for a high (-)-sparteine/RLi ratio can be avoided. Single- and double-kinetic resolution (KR) procedures give enantiopure samples of 2-trimethylsilyl- and 2,13-di(trimethylsilyl)-7,8-dipropyltetrathia[7]helicene and two-step double-KR combining (-)-sparteine/sBuLi and chiral formamides affords the synthetically valuable 2-formyl-7,8-dipropyltetrathia[7]helicene. This is the first use of (-)-sparteine for the enantioselective lithiation of helicenes and the first report of tBuLi outperforming sBuLi in a (-)-sparteine-mediated procedure.
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Affiliation(s)
- Julien Doulcet
- School of Chemistry, University of East Anglia, Norwich Research Park, Norwich, Norfolk NR4 7TJ (UK)
| | - G Richard Stephenson
- School of Chemistry, University of East Anglia, Norwich Research Park, Norwich, Norfolk NR4 7TJ (UK).
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25
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Wang CY, Derosa J, Biscoe MR. Configurationally Stable, Enantioenriched Organometallic Nucleophiles in Stereospecific Pd-Catalyzed Cross-Coupling Reactions: An Alternative Approach to Asymmetric Synthesis. Chem Sci 2015; 6:5105-5113. [PMID: 26388985 PMCID: PMC4571484 DOI: 10.1039/c5sc01710f] [Citation(s) in RCA: 90] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2015] [Accepted: 06/30/2015] [Indexed: 01/28/2023] Open
Abstract
Several research groups have recently developed methods to employ configurationally stable, enantioenriched organometallic nucleophiles in stereospecific Pd-catalyzed cross-coupling reactions. By establishing the absolute configuration of a chiral alkyltin or alkylboron nucleophile prior to its use in cross-coupling reactions, new stereogenic centers may be rapidly and reliably generated with preservation of the known initial stereochemistry. While this area of research is still in its infancy, such stereospecific cross-coupling reactions may emerge as simple, general methods to access diverse, optically active products from common enantioenriched organometallic building blocks. This minireview highlights recent progress towards the development of general, stereospecific Pd-catalyzed cross-coupling reactions using configurationally stable organometallic nucleophiles.
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Affiliation(s)
- Chao-Yuan Wang
- Department of Chemistry , The City College of New York (CCNY) , 160 Convent Avenue , New York NY 10031 , USA .
- The Graduate Center of the City University of New York (CUNY) , 365 Fifth Avenue , New York NY 10016 , USA
| | - Joseph Derosa
- Department of Chemistry , The City College of New York (CCNY) , 160 Convent Avenue , New York NY 10031 , USA .
| | - Mark R. Biscoe
- Department of Chemistry , The City College of New York (CCNY) , 160 Convent Avenue , New York NY 10031 , USA .
- The Graduate Center of the City University of New York (CUNY) , 365 Fifth Avenue , New York NY 10016 , USA
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26
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Midura WH, Krysiak J. Highly Asymmetric Cyclopropanation With Two Sulfinyl Auxiliaries as a Way to a Useful Synthetic Intermediate. Chirality 2015; 27:816-9. [PMID: 26373349 DOI: 10.1002/chir.22506] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2015] [Revised: 07/09/2015] [Accepted: 07/29/2015] [Indexed: 12/20/2022]
Abstract
The asymmetric cyclopropanation using double sulfinyl auxiliary gave bis-sulfoxide with full diastereoselectivity and very high enantioselectivity. One of the sulfinyl substituents can be removed by sulfinyl metal exchange. Differentiation of sulfinyl substituents made it possible to assign the place of attack of the Grignard reagent.
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Affiliation(s)
- Wanda H Midura
- Department of Heteroorganic Chemistry, Centre of Molecular and Macromolecular Studies, Polish Academy of Sciences, Lodz, Poland
| | - Jerzy Krysiak
- Department of Heteroorganic Chemistry, Centre of Molecular and Macromolecular Studies, Polish Academy of Sciences, Lodz, Poland
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27
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Ruppenthal S, Brückner R. Symmetric diarylsulfoxides as asymmetric sulfinylating reagents for dialkylmagnesium compounds. J Org Chem 2015; 80:897-910. [PMID: 25553340 DOI: 10.1021/jo502417j] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
At −78 °C, primary dialkylmagnesium compounds reacted with diarylsulfoxides when 1.5 equiv of the dilithium salt of (S)-BINOL was added as a promotor. Alkyl aryl sulfoxides resulted in up to quantitative yield and with up to 97% ee. This demonstrates the feasibility of asymmetric sulfinylations by achiral sulfinylating agents (from the perspective of Alkyl2Mg) as well as the feasibility of asymmetric sulfoxide–magnesium exchanges (from the perspective of Ar2SO).
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28
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Scharnagel D, Müller A, Prause F, Eck M, Goller J, Milius W, Breuning M. The First Modular Route to Core-Chiral Bispidine Ligands and Their Application in Enantioselective Copper(II)-Catalyzed Henry Reactions. Chemistry 2015; 21:12488-500. [DOI: 10.1002/chem.201502090] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2015] [Indexed: 12/16/2022]
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29
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Stikute A, Peipiņš V, Turks M. Synthesis of allyl sulfoxides from allylsilanes via silyl sulfinates. Tetrahedron Lett 2015. [DOI: 10.1016/j.tetlet.2015.06.018] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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30
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On the nature of the chain-extending species in organolithium initiated stereospecific reagent-controlled homologation reactions using α-chloroalkyl aryl sulfoxides. Tetrahedron Lett 2015. [DOI: 10.1016/j.tetlet.2014.08.123] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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31
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Lüthy M, Wheldon MC, Haji-Cheteh C, Atobe M, Bond PS, O’Brien P, Hubbard RE, Fairlamb IJ. Lead-oriented synthesis: Investigation of organolithium-mediated routes to 3-D scaffolds and 3-D shape analysis of a virtual lead-like library. Bioorg Med Chem 2015; 23:2680-94. [DOI: 10.1016/j.bmc.2015.04.005] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2015] [Revised: 04/02/2015] [Accepted: 04/03/2015] [Indexed: 11/15/2022]
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32
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Barsamian AL, Wu Z, Blakemore PR. Enantioselective synthesis of α-phenyl- and α-(dimethylphenylsilyl)alkylboronic esters by ligand mediated stereoinductive reagent-controlled homologation using configurationally labile carbenoids. Org Biomol Chem 2015; 13:3781-6. [DOI: 10.1039/c5ob00159e] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Enantioselective chain extension of boronic esters with configurationally labile racemic carbenoids is achieved in the presence of scalemic bisoxazoline ligands.
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Affiliation(s)
| | - Zhenhua Wu
- Department of Chemistry
- Oregon State University
- Corvallis
- USA
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33
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Kankala S, Jonnalagadda SB, Vasam CS. An organo-NHC catalyzed domino addition approach for the selective synthesis of 5-butynylisoxazoles and subsequent Sonogashira coupling. RSC Adv 2015. [DOI: 10.1039/c5ra11947b] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
An organo-NHC catalysed domino addition approach for the selective synthesis of 5-butynylisoxazoles and the subsequent Sonogashira cross-coupling for the selective synthesis of corresponding internal alkynes is described.
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Affiliation(s)
- Shravankumar Kankala
- School of Chemistry & Physics
- University of Kwazulu-Natal
- Westville Campus
- Durban-4000
- South Africa
| | | | - Chandra Sekhar Vasam
- Department of Chemistry
- Satavahana University
- Karimnagar
- India
- Department of Pharmaceutical Chemistry
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34
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Firth JD, O'Brien P, Ferris L. Revisiting the sparteine surrogate: development of a resolution route to the (-)-sparteine surrogate. Org Biomol Chem 2014; 12:9357-65. [PMID: 25297971 DOI: 10.1039/c4ob01694g] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
The improved performance of the sparteine surrogate compared to sparteine in a range of applications has highlighted the need to develop an approach to the (-)-sparteine surrogate, previously inaccessible in gram-quantities. A multi-gram scale, chromatography-free synthesis of the racemic sparteine surrogate and its resolution via diastereomeric salt formation with (-)-O,O'-di-p-toluoyl-l-tartaric acid is reported. Resolution on a 10.0 mmol scale gave the diastereomeric salts in 33% yield from which (-)-sparteine surrogate of 93 : 7 er was generated. This work solves a key limitation: either enantiomer of the sparteine surrogate can now be readily accessed.
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Affiliation(s)
- James D Firth
- Department of Chemistry, University of York, Heslington, York YO10 5DD, UK.
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35
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Adamovskyi MI, Artamonov OS, Tymtsunik AV, Grygorenko OO. The synthesis of a 2-azabicyclo[3.1.0]hexane by rearrangement of a spirocyclic epoxide. Tetrahedron Lett 2014. [DOI: 10.1016/j.tetlet.2014.09.020] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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36
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Canipa SJ, Stute A, O'Brien P. Use of copper(II)/diamine catalysts in the desymmetrisation of meso-diols and asymmetric Henry reactions: comparison of (−)-sparteine and (+)-sparteine surrogates. Tetrahedron 2014. [DOI: 10.1016/j.tet.2014.06.117] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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37
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Burns M, Essafi S, Bame JR, Bull SP, Webster MP, Balieu S, Dale JW, Butts CP, Harvey JN, Aggarwal VK. Assembly-line synthesis of organic molecules with tailored shapes. Nature 2014; 513:183-8. [PMID: 25209797 PMCID: PMC4167605 DOI: 10.1038/nature13711] [Citation(s) in RCA: 212] [Impact Index Per Article: 21.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2014] [Accepted: 07/23/2014] [Indexed: 12/24/2022]
Abstract
Molecular assembly lines, where molecules undergo iterative processes involving chain elongation and functional group manipulation are hallmarks of many processes found in Nature. We have sought to emulate Nature in the development of our own molecular assembly line through iterative homologations of boronic esters. Here we report a reagent (α-lithioethyl triispopropylbenzoate) which inserts into carbon-boron bonds with exceptionally high fidelity and stereocontrol. Through repeated iteration we have converted a simple boronic ester into a complex molecule (a carbon chain with ten contiguous methyl groups) with remarkably high precision over its length, its stereochemistry and therefore its shape. Different stereoisomers were targeted and it was found that they adopted different shapes (helical/linear) according to their stereochemistry. This work should now enable scientists to rationally design and create molecules with predictable shape, which could have an impact in all areas of molecular sciences where bespoke molecules are required.
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Affiliation(s)
- Matthew Burns
- School of Chemistry, University of Bristol, Cantock's Close, Bristol BS8 1TS, UK
| | - Stéphanie Essafi
- School of Chemistry, University of Bristol, Cantock's Close, Bristol BS8 1TS, UK
| | - Jessica R Bame
- School of Chemistry, University of Bristol, Cantock's Close, Bristol BS8 1TS, UK
| | - Stephanie P Bull
- School of Chemistry, University of Bristol, Cantock's Close, Bristol BS8 1TS, UK
| | - Matthew P Webster
- School of Chemistry, University of Bristol, Cantock's Close, Bristol BS8 1TS, UK
| | - Sébastien Balieu
- School of Chemistry, University of Bristol, Cantock's Close, Bristol BS8 1TS, UK
| | - James W Dale
- Novartis Horsham Research Centre, Wimblehurst Road, Horsham, West Sussex RH13 5AB, UK
| | - Craig P Butts
- School of Chemistry, University of Bristol, Cantock's Close, Bristol BS8 1TS, UK
| | - Jeremy N Harvey
- School of Chemistry, University of Bristol, Cantock's Close, Bristol BS8 1TS, UK
| | - Varinder K Aggarwal
- School of Chemistry, University of Bristol, Cantock's Close, Bristol BS8 1TS, UK
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38
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Alwedi E, Zakharov LN, Blakemore PR. Chain Extension of Boronic Esters with Lithiooxiranes Generated by Sulfoxide-Metal Exchange - Stereocontrolled Access to 2°/2°, 2°/3°, and 3°/3° Vicinal Diols and Related Compounds. European J Org Chem 2014. [DOI: 10.1002/ejoc.201403105] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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39
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Rayner PJ, Gelardi G, O'Brien P, Horan RAJ, Blakemore DC. On the synthesis of α-amino sulfoxides. Org Biomol Chem 2014; 12:3499-512. [PMID: 24759885 DOI: 10.1039/c4ob00567h] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
A synthetic study on the preparation of N-Boc α-amino sulfoxides has revealed an unexpected instability which is believed to be due to α-elimination of the sulfoxide to give an iminium ion. Full synthetic details are reported on two main synthetic routes: lithiation and sulfinate trapping of N-Boc heterocycles and oxidation of N-Boc α-amino sulfides. Six novel α-amino sulfoxides were successfully prepared and isolated. It is speculated that four other α-amino sulfoxides were synthesised but could not be isolated due to their propensity to α-eliminate the sulfoxide. Ultimately, a stable, cyclic N-Boc α-amino sulfoxide was prepared and this successful synthesis relied on the α-amino sulfoxide being part of a bicyclic [3.1.0] fused ring system that could not undergo α-elimination of the sulfoxide.
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Affiliation(s)
- Peter J Rayner
- Department of Chemistry, University of York, Heslington, York YO10 5DD, UK.
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40
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Gladow D, Reissig HU. Perfluoroalkyl-Substituted Thiophenes and Pyrroles from Donor–Acceptor Cyclopropanes and Heterocumulenes: Synthesis and Exploration of their Reactivity. J Org Chem 2014; 79:4492-502. [DOI: 10.1021/jo500534t] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Daniel Gladow
- Institut für Chemie
und Biochemie, Freie Universität Berlin, Takustrasse 3, D-14195 Berlin, Germany
| | - Hans-Ulrich Reissig
- Institut für Chemie
und Biochemie, Freie Universität Berlin, Takustrasse 3, D-14195 Berlin, Germany
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41
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Hesp KD, Fernando DP, Jiao W, Londregan AT. Expedient Synthesis of α-Heteroaryl Piperidines Using a Pd-Catalyzed Suzuki Cross-Coupling–Reduction Sequence. Org Lett 2014; 16:413-5. [DOI: 10.1021/ol403367b] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Kevin D. Hesp
- Pfizer
Worldwide Medicinal
Chemistry, Eastern Point
Road, Groton, Connecticut 06340, United States
| | - Dilinie P. Fernando
- Pfizer
Worldwide Medicinal
Chemistry, Eastern Point
Road, Groton, Connecticut 06340, United States
| | - Wenhua Jiao
- Pfizer
Worldwide Medicinal
Chemistry, Eastern Point
Road, Groton, Connecticut 06340, United States
| | - Allyn T. Londregan
- Pfizer
Worldwide Medicinal
Chemistry, Eastern Point
Road, Groton, Connecticut 06340, United States
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42
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Emerson CR, Zakharov LN, Blakemore PR. Investigation of functionalized α-chloroalkyllithiums for a stereospecific reagent-controlled homologation approach to the analgesic alkaloid (-)-epibatidine. Chemistry 2013; 19:16342-56. [PMID: 24127119 DOI: 10.1002/chem.201302511] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2013] [Indexed: 11/10/2022]
Abstract
Four putative functionalized α-chloroakyllithiums RCH2CHLiCl, where R=CHCH2(18 a), CCH (18 b), CH2OBn (18 c), and CH[O(CH2)2O] (18 d), were generated in situ by sulfoxide-lithium exchange from α-chlorosulfoxides, and investigated for the stereospecific reagent-controlled homologation (StReCH) of phenethyl and 2-chloropyrid-5-yl (17) pinacol boronic esters. Deuterium labeling experiments revealed that α-chloroalkyllithiums are quenched by proton transfer from their α-chlorosulfoxide precursors and it was established that this effect compromises the yield of StReCH reactions. Use of α-deuterated α-chlorosulfoxides was discovered to ameliorate the problem by retarding the rate of acid-base chemistry between the carbenoid and its precursor. Carbenoids 18 a and 18 b showed poor StReCH efficacy, particularly the propargyl group bearing carbenoid 18 b, the instability of which was attributed to a facile 1,2-hydride shift. By contrast, 18 d, a carbenoid that benefits from a stabilizing interaction between O and Li atoms gave good StReCH yields. Boronate 17 was chain extended by carbenoids 18 a, 18 b, and 18 d in 16, 0, and 68% yield, respectively; α-deuterated isotopomers D-18 a and D-18 d gave yields of 33 and 79% for the same reaction. Double StReCH of 17 was pursued to target contiguous stereodiads appropriate for the total synthesis of (-)-epibatidine (15). One-pot double StReCH of boronate 17 by two exposures to (S)-D-18 a (≤66 % ee), followed by work-up with KOOH, gave the expected stereodiad product in 16% yield (d.r.~67:33). The comparable reaction using two exposures to (S)-D-18 d (≤90% ee) delivered the expected bisacetal containing stereodiad (R,R)-DD-48 in 40% yield (≥98% ee, d.r.=85:15). Double StReCH of 17 using (S)-D-18 d (≤90% ee) followed by (R)-D-18 d (≤90% ee) likewise gave (R,S)-DD-48 in 49% yield (≥97% ee, d.r.=79:21). (R,S)-DD-48 was converted to a dideuterated isotopomer of a synthetic intermediate in Corey's synthesis of 15.
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43
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Breuning M, Hein D. 5-Substituted Derivatives of the Tricyclic (+)-Sparteine Surrogate in the Enantioselective Lithiation/Stannylation of anO-Alkyl Carbamate. European J Org Chem 2013. [DOI: 10.1002/ejoc.201300987] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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44
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Gao M, Patwardhan NN, Carlier PR. Stereochemical Inversion of a Cyano-Stabilized Grignard Reagent: Remarkable Effects of the Ethereal Solvent Structure and Concentration. J Am Chem Soc 2013; 135:14390-400. [DOI: 10.1021/ja407348s] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Ming Gao
- Department of Chemistry, Virginia Tech, Blacksburg, Virginia 24061, United States
| | - Neeraj N. Patwardhan
- Department of Chemistry, Virginia Tech, Blacksburg, Virginia 24061, United States
| | - Paul R. Carlier
- Department of Chemistry, Virginia Tech, Blacksburg, Virginia 24061, United States
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45
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Abstract
The author's work on (α-haloalkyl)boronic esters as reagents for asymmetric synthesis is reviewed. Diastereomeric ratios exceeding 1000 can be achieved with this chemistry, and ratios around 100 are commonplace. The method allows sequential installation of a series of stereocenters and tolerates a wide variety of suitably protected functional substituents. (α-Amidoalkyl)boronic acids include biochemically significant serine protease inhibitors, one of which is the clinically successful proteasome inhibitor bortezomib, used for treatment of multiple myeloma and mantle cell lymphoma.
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Affiliation(s)
- Donald S Matteson
- Washington State University , Pullman, Washington 99164-4630, United States
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