1
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Liang Y, Liu C, Li Y, Ouyang L. TsOH-catalyzed dehydroxylative cross-coupling of alcohols with phenols: rapid access to propofol derivatives. RSC Adv 2024; 14:26857-26862. [PMID: 39184007 PMCID: PMC11343040 DOI: 10.1039/d4ra04674a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2024] [Accepted: 08/04/2024] [Indexed: 08/27/2024] Open
Abstract
Modification of the parent structure of molecules often alters their physicochemical properties and biological activities. Herein, a practical, efficient, and highly regioselective C-H alkylation of phenols with alcohols via dehydroxylative cross-coupling was developed to produce para-alkylated phenols with excellent regioselectivities and yields, using which propofol derivatives were rapidly synthesized. This process is performed under mild and simple conditions and is well-compatible with a variety of alcohols (secondary and tertiary benzylic alcohols as well as allyl alcohols) as alkylated agents. In addition, high aryl ether derivatives were also obtained using this catalytic system.
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Affiliation(s)
- Yuqiu Liang
- School of Pharmacy, Gannan Medical University Ganzhou 341000 Jiangxi Province P. R. China
| | - Chengxiu Liu
- School of Pharmacy, Gannan Medical University Ganzhou 341000 Jiangxi Province P. R. China
| | - Youchun Li
- The Affiliated Ganzhou Hospital, Jiangxi Medical College, Nanchang University Ganzhou 341000 Jiangxi Province P. R. China
| | - Lu Ouyang
- School of Pharmacy, Gannan Medical University Ganzhou 341000 Jiangxi Province P. R. China
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2
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Boron Lewis Acid Catalysis Enables the Direct Cyanation of Benzyl Alcohols by Means of Isonitrile as Cyanide Source. Molecules 2023; 28:molecules28052174. [PMID: 36903420 PMCID: PMC10004367 DOI: 10.3390/molecules28052174] [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: 01/29/2023] [Revised: 02/18/2023] [Accepted: 02/23/2023] [Indexed: 03/03/2023] Open
Abstract
The development of an efficient and straightforward method for cyanation of alcohols is of great value. However, the cyanation of alcohols always requires toxic cyanide sources. Herein, an unprecedented synthetic application of an isonitrile as a safer cyanide source in B(C6F5)3-catalyzed direct cyanation of alcohols is reported. With this approach, a wide range of valuable α-aryl nitriles was synthesized in good to excellent yields (up to 98%). The reaction can be scaled up and the practicability of this approach is further manifested in the synthesis of an anti-inflammatory drug, naproxen. Moreover, experimental studies were performed to illustrate the reaction mechanism.
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3
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Yadav N, Khan J, Tyagi A, Singh S, Hazra CK. Rapid Access to Arylated and Allylated Cyclopropanes via Brønsted Acid-Catalyzed Dehydrative Coupling of Cyclopropylcarbinols. J Org Chem 2022; 87:6886-6901. [PMID: 35535956 DOI: 10.1021/acs.joc.2c00690] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
A regioselective protocol for the synthesis of cyclopropyl derivatives that relies on Brookhart acid-catalyzed dehydrative coupling over substituted cyclopropylcarbinols without rearrangement is reported herein. The reactions proceed promptly at 25 °C with only 2.0 mol % catalyst loading and produce the cyclopropyl derivatives in excellent yields. This method is well tolerated with a vast range of cyclopropylcarbinols including aliphatic cyclopropylcarbinols, where no elimination product was obtained, demonstrating the protocol's utility. Further, the Hammett correlation suggested the formation of a cyclopropylcarbinyl cation followed by a coupling reaction. An extremely effective gram-scale reaction has also been demonstrated with a high turnover number.
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Affiliation(s)
- Naveen Yadav
- Department of Chemistry, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India
| | - Jabir Khan
- Department of Chemistry, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India
| | - Aparna Tyagi
- Department of Chemistry, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India
| | - Sanjay Singh
- Department of Chemistry, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India
| | - Chinmoy Kumar Hazra
- Department of Chemistry, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India
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4
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Mhasni O, Elleuch H, Rezgui F. Direct nucleophilic substitutions of allylic alcohols with 1,3-dicarbonyl compounds: Synthetic design, mechanistic aspects and applications. Tetrahedron 2022. [DOI: 10.1016/j.tet.2022.132732] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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5
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Munyemana F, Patiny L, Ghosez L. A mild method for the replacement of a hydroxyl group by halogen: 3. the dichotomous behavior of α-haloenamines towards allylic and propargylic alcohols. Tetrahedron 2021. [DOI: 10.1016/j.tet.2021.132148] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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6
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Merad J, Matyašovský J, Stopka T, Brutiu BR, Pinto A, Drescher M, Maulide N. Stable and easily available sulfide surrogates allow a stereoselective activation of alcohols. Chem Sci 2021; 12:7770-7774. [PMID: 34168830 PMCID: PMC8188487 DOI: 10.1039/d1sc01602d] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
Isothiouronium salts are easily accessible and stable compounds. Herein, we report their use as versatile deoxasulfenylating agents enabling a stereoselective, thiol-free protocol for synthesis of thioethers from alcohols. The method is simple, scalable and tolerates a broad range of functional groups otherwise incompatible with other methods. Late-stage modification of several pharmaceuticals provides access to multiple analogues of biologically relevant molecules. Performed experiments give insight into the reaction mechanism. A simple and scalable method for stereoselective synthesis of thioethers directly from alcohols using isothiouronium salts is presented. The utility of this thiol-free reaction was exemplified by late-stage modification of complex molecules.![]()
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Affiliation(s)
- Jérémy Merad
- Department of Organic Chemistry, University of Vienna Währinger Straße 38 1090 Vienna Austria http://maulide.univie.ac.at.,Univ. Lyon, Université Claude Bernard Lyon 1, CNRS CPE Lyon, INSA Lyon, ICBMS, UMR 5246 Bât. Lederer 1 rue Victor Grignard 69622 Villeurbanne France
| | - Ján Matyašovský
- Department of Organic Chemistry, University of Vienna Währinger Straße 38 1090 Vienna Austria http://maulide.univie.ac.at
| | - Tobias Stopka
- Department of Organic Chemistry, University of Vienna Währinger Straße 38 1090 Vienna Austria http://maulide.univie.ac.at
| | - Bogdan R Brutiu
- Department of Organic Chemistry, University of Vienna Währinger Straße 38 1090 Vienna Austria http://maulide.univie.ac.at
| | - Alexandre Pinto
- Department of Organic Chemistry, University of Vienna Währinger Straße 38 1090 Vienna Austria http://maulide.univie.ac.at
| | - Martina Drescher
- Department of Organic Chemistry, University of Vienna Währinger Straße 38 1090 Vienna Austria http://maulide.univie.ac.at
| | - Nuno Maulide
- Department of Organic Chemistry, University of Vienna Währinger Straße 38 1090 Vienna Austria http://maulide.univie.ac.at
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7
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Epifanov M, Mo JY, Dubois R, Yu H, Sammis GM. One-Pot Deoxygenation and Substitution of Alcohols Mediated by Sulfuryl Fluoride. J Org Chem 2021; 86:3768-3777. [PMID: 33567820 DOI: 10.1021/acs.joc.0c02557] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Sulfuryl fluoride is a valuable reagent for the one-pot activation and derivatization of aliphatic alcohols, but the highly reactive alkyl fluorosulfate intermediates limit both the types of reactions that can be accessed as well as the scope. Herein, we report the SO2F2-mediated alcohol substitution and deoxygenation method that relies on the conversion of fluorosulfates to alkyl halide intermediates. This strategy allows the expansion of SO2F2-mediated one-pot processes to include radical reactions, where the alkyl halides can also be exploited in the one-pot deoxygenation of primary alcohols under mild conditions (52-95% yield). This strategy can also enhance the scope of substitutions to nucleophiles that are previously incompatible with one-pot SO2F2-mediated alcohol activation and enables substitution of primary and secondary alcohols in 54-95% yield. Chiral secondary alcohols undergo a highly stereospecific (90-98% ee) double nucleophilic displacement with an overall retention of configuration.
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Affiliation(s)
- Maxim Epifanov
- Department of Chemistry, University of British Columbia, 2036 Main Mall, Vancouver, British Columbia V6T 1Z1, Canada
| | - Jia Yi Mo
- Department of Chemistry, University of British Columbia, 2036 Main Mall, Vancouver, British Columbia V6T 1Z1, Canada
| | - Rudy Dubois
- Department of Chemistry, University of British Columbia, 2036 Main Mall, Vancouver, British Columbia V6T 1Z1, Canada
| | - Hao Yu
- Department of Chemistry, University of British Columbia, 2036 Main Mall, Vancouver, British Columbia V6T 1Z1, Canada
| | - Glenn M Sammis
- Department of Chemistry, University of British Columbia, 2036 Main Mall, Vancouver, British Columbia V6T 1Z1, Canada
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8
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Chen Y, He R, Song H, Yu G, Li C, Liu Y, Wang Q. Two‐Step Protocol for Iodotrimethylsilane‐Mediated Deoxy‐Functionalization of Alcohols. European J Org Chem 2021. [DOI: 10.1002/ejoc.202001602] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Yuming Chen
- State Key Laboratory of Elemento-Organic Chemistry Research Institute of Elemento-Organic Chemistry College of Chemistry Collaborative Innovation Center of Chemical Science and Engineering (Tianjin) Nankai University 300071 Tianjin People's Republic of China
| | - Ru He
- State Key Laboratory of Elemento-Organic Chemistry Research Institute of Elemento-Organic Chemistry College of Chemistry Collaborative Innovation Center of Chemical Science and Engineering (Tianjin) Nankai University 300071 Tianjin People's Republic of China
| | - Hongjian Song
- State Key Laboratory of Elemento-Organic Chemistry Research Institute of Elemento-Organic Chemistry College of Chemistry Collaborative Innovation Center of Chemical Science and Engineering (Tianjin) Nankai University 300071 Tianjin People's Republic of China
| | - Guoqing Yu
- State Key Laboratory of Elemento-Organic Chemistry Research Institute of Elemento-Organic Chemistry College of Chemistry Collaborative Innovation Center of Chemical Science and Engineering (Tianjin) Nankai University 300071 Tianjin People's Republic of China
- Shandong Boyuan Pharmaceutical & Chemical Co., Ltd 262725 Shouguang People's Republic of China
| | - Chenglin Li
- State Key Laboratory of Elemento-Organic Chemistry Research Institute of Elemento-Organic Chemistry College of Chemistry Collaborative Innovation Center of Chemical Science and Engineering (Tianjin) Nankai University 300071 Tianjin People's Republic of China
- Shandong Boyuan Pharmaceutical & Chemical Co., Ltd 262725 Shouguang People's Republic of China
| | - Yuxiu Liu
- State Key Laboratory of Elemento-Organic Chemistry Research Institute of Elemento-Organic Chemistry College of Chemistry Collaborative Innovation Center of Chemical Science and Engineering (Tianjin) Nankai University 300071 Tianjin People's Republic of China
| | - Qingmin Wang
- State Key Laboratory of Elemento-Organic Chemistry Research Institute of Elemento-Organic Chemistry College of Chemistry Collaborative Innovation Center of Chemical Science and Engineering (Tianjin) Nankai University 300071 Tianjin People's Republic of China
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9
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Estopiñá‐Durán S, Taylor JE. Brønsted Acid-Catalysed Dehydrative Substitution Reactions of Alcohols. Chemistry 2021; 27:106-120. [PMID: 32491202 PMCID: PMC7820959 DOI: 10.1002/chem.202002106] [Citation(s) in RCA: 35] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2020] [Indexed: 12/13/2022]
Abstract
The direct, catalytic dehydrative substitution of alcohols is a challenging, yet highly desirable process in the development of more sustainable approaches to organic chemistry. This review outlines recent advances in Brønsted acid-catalysed dehydrative substitution reactions for C-C, C-O, C-N and C-S bond formation. The wide range of processes that are now accessible using simple alcohols as the formal electrophile are highlighted, while current limitations and therefore possible future directions for research are also discussed.
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Affiliation(s)
- Susana Estopiñá‐Durán
- Department of ChemistryUniversity of BathClaverton DownBathBA2 7AYUK
- EaStCHEMSchool of ChemistryUniversity of St AndrewsNorth HaughSt AndrewsKY16 9STUK
| | - James E. Taylor
- Department of ChemistryUniversity of BathClaverton DownBathBA2 7AYUK
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10
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Margarita C, Villo P, Tuñon H, Dalla-Santa O, Camaj D, Carlsson R, Lill M, Ramström A, Lundberg H. Zirconium-catalysed direct substitution of alcohols: enhancing the selectivity by kinetic analysis. Catal Sci Technol 2021. [DOI: 10.1039/d1cy01219c] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Kinetic analysis was used as a tool for rational optimization of catalytic direct substitution of alcohols to enable selective formation of ethers, thioethers, and Friedel–Crafts alkylation products using a moisture-tolerant and commercially available Zr complex.
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Affiliation(s)
- Cristiana Margarita
- Department of Chemistry, KTH Royal Institute of Technology, Teknikringen 30, S-10044 Stockholm, Sweden
| | - Piret Villo
- Department of Chemistry, KTH Royal Institute of Technology, Teknikringen 30, S-10044 Stockholm, Sweden
| | - Hernando Tuñon
- Department of Chemistry, KTH Royal Institute of Technology, Teknikringen 30, S-10044 Stockholm, Sweden
| | - Oscar Dalla-Santa
- Department of Chemistry, KTH Royal Institute of Technology, Teknikringen 30, S-10044 Stockholm, Sweden
| | - David Camaj
- Department of Chemistry, KTH Royal Institute of Technology, Teknikringen 30, S-10044 Stockholm, Sweden
| | - Robin Carlsson
- Department of Chemistry, KTH Royal Institute of Technology, Teknikringen 30, S-10044 Stockholm, Sweden
| | - Malin Lill
- Department of Chemistry, KTH Royal Institute of Technology, Teknikringen 30, S-10044 Stockholm, Sweden
| | - Anja Ramström
- Department of Chemistry, KTH Royal Institute of Technology, Teknikringen 30, S-10044 Stockholm, Sweden
| | - Helena Lundberg
- Department of Chemistry, KTH Royal Institute of Technology, Teknikringen 30, S-10044 Stockholm, Sweden
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11
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Rodrigues Silva D, de Azevedo Santos L, Freitas MP, Guerra CF, Hamlin TA. Nature and Strength of Lewis Acid/Base Interaction in Boron and Nitrogen Trihalides. Chem Asian J 2020; 15:4043-4054. [PMID: 33015969 PMCID: PMC7756781 DOI: 10.1002/asia.202001127] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2020] [Indexed: 11/25/2022]
Abstract
We have quantum chemically investigated the bonding between archetypical Lewis acids and bases. Our state-of-the-art computations on the X3 B-NY3 Lewis pairs have revealed the origin behind the systematic increase in B-N bond strength as X and Y are varied from F to Cl, Br, I, H. For H3 B-NY3 , the bonding trend is driven by the commonly accepted mechanism of donor-acceptor [HOMO(base)-LUMO(acid)] interaction. Interestingly, for X3 B-NH3 , the bonding mechanism is determined by the energy required to deform the BX3 to the pyramidal geometry it adopts in the adduct. Thus, Lewis acids that can more easily pyramidalize form stronger bonds with Lewis bases. The decrease in the strain energy of pyramidalization on going from BF3 to BI3 is directly caused by the weakening of the B-X bond strength, which stems primarily from the bonding in the plane of the molecule (σ-like) and not in the π system, at variance with the currently accepted mechanism.
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Affiliation(s)
- Daniela Rodrigues Silva
- Department of Theoretical ChemistryAmsterdam Institute of Molecular and Life Sciences (AIMMS)Amsterdam Center for Multiscale Modeling (ACMM)Vrije Universiteit AmsterdamDe Boelelaan 10831081 HVAmsterdam (TheNetherlands
- Departamento de QuímicaUniversidade Federal de Lavras37200-900Lavras–MGBrazil
| | - Lucas de Azevedo Santos
- Department of Theoretical ChemistryAmsterdam Institute of Molecular and Life Sciences (AIMMS)Amsterdam Center for Multiscale Modeling (ACMM)Vrije Universiteit AmsterdamDe Boelelaan 10831081 HVAmsterdam (TheNetherlands
- Departamento de QuímicaUniversidade Federal de Lavras37200-900Lavras–MGBrazil
| | - Matheus P. Freitas
- Departamento de QuímicaUniversidade Federal de Lavras37200-900Lavras–MGBrazil
| | - Célia Fonseca Guerra
- Department of Theoretical ChemistryAmsterdam Institute of Molecular and Life Sciences (AIMMS)Amsterdam Center for Multiscale Modeling (ACMM)Vrije Universiteit AmsterdamDe Boelelaan 10831081 HVAmsterdam (TheNetherlands
- Leiden Institute of ChemistryGorlaeus LaboratoriesLeiden UniversityEinsteinweg 552333 CCLeiden (TheNetherlands
| | - Trevor A. Hamlin
- Department of Theoretical ChemistryAmsterdam Institute of Molecular and Life Sciences (AIMMS)Amsterdam Center for Multiscale Modeling (ACMM)Vrije Universiteit AmsterdamDe Boelelaan 10831081 HVAmsterdam (TheNetherlands
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12
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Lyons DJM, Empel C, Pace DP, Dinh AH, Mai BK, Koenigs RM, Nguyen TV. Tropolonate Salts as Acyl-Transfer Catalysts under Thermal and Photochemical Conditions: Reaction Scope and Mechanistic Insights. ACS Catal 2020. [DOI: 10.1021/acscatal.0c03702] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Demelza J. M. Lyons
- School of Chemistry, University of New South Wales, Sydney, New South Wales 2052, Australia
| | - Claire Empel
- School of Chemistry, University of New South Wales, Sydney, New South Wales 2052, Australia
- Institute of Organic Chemistry, RWTH Aachen, Aachen D52074, Germany
| | - Domenic P. Pace
- School of Chemistry, University of New South Wales, Sydney, New South Wales 2052, Australia
| | - An H. Dinh
- School of Chemistry, University of New South Wales, Sydney, New South Wales 2052, Australia
| | - Binh Khanh Mai
- Department of Chemistry, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, United States
| | - Rene M. Koenigs
- School of Chemistry, University of New South Wales, Sydney, New South Wales 2052, Australia
- Institute of Organic Chemistry, RWTH Aachen, Aachen D52074, Germany
| | - Thanh Vinh Nguyen
- School of Chemistry, University of New South Wales, Sydney, New South Wales 2052, Australia
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13
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Estopiñá-Durán S, Mclean EB, Donnelly LJ, Hockin BM, Taylor JE. Arylboronic Acid Catalyzed C-Alkylation and Allylation Reactions Using Benzylic Alcohols. Org Lett 2020; 22:7547-7551. [PMID: 32959662 PMCID: PMC8155392 DOI: 10.1021/acs.orglett.0c02736] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
![]()
The arylboronic acid
catalyzed dehydrative C-alkylation
of 1,3-diketones and 1,3-ketoesters using secondary benzylic alcohols
as the electrophile is reported, forming new C–C bonds (19
examples, up to 98% yield) with the release of water as the only byproduct.
The process is also applicable to the allylation of benzylic alcohols
using allyltrimethylsilane as the nucleophile (12 examples, up to
96% yield).
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Affiliation(s)
- Susana Estopiñá-Durán
- EaStCHEM, School of Chemistry, University of St Andrews, North Haugh, St. Andrews, KY16 9ST, U.K.,Department of Chemistry, University of Bath, Claverton Down, Bath, Somerset BA2 7AY, U.K
| | - Euan B Mclean
- EaStCHEM, School of Chemistry, University of St Andrews, North Haugh, St. Andrews, KY16 9ST, U.K
| | - Liam J Donnelly
- EaStCHEM, School of Chemistry, University of St Andrews, North Haugh, St. Andrews, KY16 9ST, U.K
| | - Bryony M Hockin
- EaStCHEM, School of Chemistry, University of St Andrews, North Haugh, St. Andrews, KY16 9ST, U.K
| | - James E Taylor
- Department of Chemistry, University of Bath, Claverton Down, Bath, Somerset BA2 7AY, U.K
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14
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Mohite AR, Phatake RS, Dubey P, Agbaria M, Shames AI, Lemcoff NG, Reany O. Thiourea-Mediated Halogenation of Alcohols. J Org Chem 2020; 85:12901-12911. [DOI: 10.1021/acs.joc.0c01431] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Amar R. Mohite
- Department of Natural Sciences, The Open University of Israel, Ra’anana 4353701, Israel
- Department of Chemistry, Ben-Gurion University of the Negev, Beer-Sheva 8410501, Israel
| | - Ravindra S. Phatake
- Department of Chemistry, Ben-Gurion University of the Negev, Beer-Sheva 8410501, Israel
| | - Pooja Dubey
- Department of Natural Sciences, The Open University of Israel, Ra’anana 4353701, Israel
- Department of Chemistry, Ben-Gurion University of the Negev, Beer-Sheva 8410501, Israel
| | - Mohamed Agbaria
- Department of Chemistry, Ben-Gurion University of the Negev, Beer-Sheva 8410501, Israel
| | - Alexander I. Shames
- Department of Physics, Ben-Gurion University of the Negev, Beer-Sheva 8410501, Israel
| | - N. Gabriel Lemcoff
- Department of Chemistry, Ben-Gurion University of the Negev, Beer-Sheva 8410501, Israel
- Ilse Katz Institute for Nanoscale Science and Technology, Ben-Gurion University of the Negev, Beer-Sheva 8410501, Israel
| | - Ofer Reany
- Department of Natural Sciences, The Open University of Israel, Ra’anana 4353701, Israel
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15
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Zoller B, Stach T, Huy PH. Lewis Base Catalysis Enables the Activation of Alcohols by means of Chloroformates as Phosgene Substitutes. ChemCatChem 2020. [DOI: 10.1002/cctc.202001175] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Ben Zoller
- Saarland University Organic Chemistry P. O. Box 151150 66041 Saarbrücken Germany
- Current address Helmholtz Institute for Pharmaceutical Research Saarland (HIPS) University Campus E8.1, room 2.29 66123 Saarbrücken Germany
| | - Tanja Stach
- Saarland University Organic Chemistry P. O. Box 151150 66041 Saarbrücken Germany
- Current address: Endotherm GmbH Science Park 2 66123 Saarbrücken Germany
| | - Peter H. Huy
- Saarland University Organic Chemistry P. O. Box 151150 66041 Saarbrücken Germany
- Rostock University Institute for Chemistry Albert-Einstein-Str. 3A 18059 Rostock Germany
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16
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Kohlmeyer C, Schäfer A, Huy PH, Hilt G. Formamide-Catalyzed Nucleophilic Substitutions: Mechanistic Insight and Rationalization of Catalytic Activity. ACS Catal 2020. [DOI: 10.1021/acscatal.0c03348] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Corinna Kohlmeyer
- Oldenburg University, Institute of Chemistry, Carl-von-Ossietzky-Str. 9-11, 26111 Oldenburg, Germany
| | - André Schäfer
- Saarland University, Faculty of Natural Sciences and Technology, Department of Chemistry, 66123 Saarbruecken, Germany
| | - Peter H. Huy
- Rostock University, Institute for Chemistry, Albert-Einstein-Straße 3A, 18059 Rostock, Germany
| | - Gerhard Hilt
- Oldenburg University, Institute of Chemistry, Carl-von-Ossietzky-Str. 9-11, 26111 Oldenburg, Germany
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17
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Zoller B, Zapp J, Huy PH. Rapid Organocatalytic Formation of Carbon Monoxide: Application towards Carbonylative Cross Couplings. Chemistry 2020; 26:9632-9638. [PMID: 32516509 PMCID: PMC7497008 DOI: 10.1002/chem.202002746] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2020] [Indexed: 12/15/2022]
Abstract
Herein, the first organocatalytic method for the transformation of non‐derivatized formic acid into carbon monoxide (CO) is introduced. Formylpyrrolidine (FPyr) and trichlorotriazine (TCT), which is a cost‐efficient commodity chemical, enable this decarbonylation. Utilization of dimethylformamide (DMF) as solvent and catalyst even allows for a rapid CO generation at room temperature. Application towards four different carbonylative cross coupling protocols demonstrates the high synthetic utility and versatility of the new approach. Remarkably, this also comprehends a carbonylative Sonogashira reaction at room temperature employing intrinsically difficult electron‐deficient aryl iodides. Commercial 13C‐enriched formic acid facilitates the production of radiolabeled compounds as exemplified by the pharmaceutical Moclobemide. Finally, comparative experiments verified that the present method is highly superior to other protocols for the activation of carboxylic acids.
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Affiliation(s)
- Ben Zoller
- Organic Chemistry, Saarland University, P. O. Box 151150, 66041, Saarbrücken, Germany
| | - Josef Zapp
- Institute of Pharmaceutical Biology, Saarland University, Campus C 2.3, 66123, Saarbrücken, Germany
| | - Peter H Huy
- Organic Chemistry, Saarland University, P. O. Box 151150, 66041, Saarbrücken, Germany
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18
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Hussein MA, Dinh AH, Huynh VT, Nguyen TV. Synthesis of tertiary amines by direct Brønsted acid catalyzed reductive amination. Chem Commun (Camb) 2020; 56:8691-8694. [PMID: 32613957 DOI: 10.1039/d0cc02955f] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Tertiary amines are ubiquitous and valuable compounds in synthetic chemistry, with a wide range of applications in organocatalysis, organometallic complexes, biological processes and pharmaceutical chemistry. One of the most frequently used pathways to synthesize tertiary amines is the reductive amination reaction of carbonyl compounds. Despite developments of numerous new reductive amination methods in the past few decades, this reaction generally requires non-atom-economic processes with harsh conditions and toxic transition-metal catalysts. Herein, we report simple yet practical protocols using triflic acid as a catalyst to efficiently promote the direct reductive amination reactions of carbonyl compounds on a broad range of substrates. Applications of this new method to generate valuable heterocyclic frameworks and polyamines are also included.
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Affiliation(s)
- Mohanad A Hussein
- School of Chemistry, University of New South Wales, Sydney, Australia.
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19
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Bartoccini F, Retini M, Piersanti G. C3-Alkylation of indoles and oxindoles by alcohols by means of borrowing hydrogen methodology. Tetrahedron Lett 2020. [DOI: 10.1016/j.tetlet.2020.151875] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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20
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Mo JY, Epifanov M, Hodgson JW, Dubois R, Sammis GM. One‐Pot Substitution of Aliphatic Alcohols Mediated by Sulfuryl Fluoride. Chemistry 2020; 26:4958-4962. [DOI: 10.1002/chem.202000721] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2020] [Indexed: 12/27/2022]
Affiliation(s)
- Jia Yi Mo
- Department of ChemistryUniversity of British Columbia 2036 Main Mall Vancouver, British Columbia V6T 1Z1 Canada
| | - Maxim Epifanov
- Department of ChemistryUniversity of British Columbia 2036 Main Mall Vancouver, British Columbia V6T 1Z1 Canada
| | - Jack W. Hodgson
- Department of ChemistryUniversity of British Columbia 2036 Main Mall Vancouver, British Columbia V6T 1Z1 Canada
| | - Rudy Dubois
- Department of ChemistryUniversity of British Columbia 2036 Main Mall Vancouver, British Columbia V6T 1Z1 Canada
| | - Glenn M. Sammis
- Department of ChemistryUniversity of British Columbia 2036 Main Mall Vancouver, British Columbia V6T 1Z1 Canada
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21
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Ji Y, Li H, Wang Y, Zhang Z, Wu Y. Sulfoxide‐Promoted Chlorination of Indoles and Electron‐Rich Arenes with Chlorine as Nucleophile. Adv Synth Catal 2020. [DOI: 10.1002/adsc.201901492] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Yuan‐Zhao Ji
- School of Marine Science and TechnologyHarbin Institute of Technology Weihai 264209 People's Republic of China
| | - Hui‐Jing Li
- School of Marine Science and TechnologyHarbin Institute of Technology Weihai 264209 People's Republic of China
| | - Yi‐Ruo Wang
- Weihai NO.1 High School 75 Wenhuazhong Road Weihai 264200 People's Republic of China
| | - Zheng‐Yan Zhang
- School of Marine Science and TechnologyHarbin Institute of Technology Weihai 264209 People's Republic of China
| | - Yan‐Chao Wu
- School of Marine Science and TechnologyHarbin Institute of Technology Weihai 264209 People's Republic of China
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22
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Gao Y, Zhang Z, Li Z, Guo T, Zhu Y, Yao Z, Liu B, Li Y, Guo K. 4,5-Dioxo-imidazolinium Cation Activation of 1-Acyl-1-carbamoyl Oximes: Access to Cyanoformamides Using Dichloroimidazolidinedione. J Org Chem 2019; 85:1087-1096. [DOI: 10.1021/acs.joc.9b02992] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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