1
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Escorihuela J, Fustero S. Fluorinated Imines in Tandem and Cycloaddition Reactions. CHEM REC 2023; 23:e202200262. [PMID: 36633495 DOI: 10.1002/tcr.202200262] [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: 11/24/2022] [Revised: 12/23/2022] [Indexed: 01/13/2023]
Abstract
The chemistry of fluorinated compounds has experienced extraordinary growth in recent decades due to the many and varied properties which many of the compounds that contain fluorinated groups possess. Among all of them, fluorinated chiral imines, in particular the Ellman's imines, are of great importance since they are some of the most interesting building blocks for the synthesis of a large number of enantioenriched carbocycles and heterocycles with extraordinary biological and synthetic properties. This personal account covers the most significant results obtained in our research group in the last two decades concerning asymmetric tandem reactions, paying special attention to the intramolecular aza-Michael reaction (IMAMR), diversity oriented synthesis (DOS), asymmetric tandem reactions involving a p-tolylsulfinyl group as chiral inducer and cycloaddition processes, in particular, the Pauson-Khand reaction, [2+2+2]-cycloadditions and metathesis reactions, starting mainly from enyne compounds and through the use of fluorinated chiral N-sulfinyl imines and their derivatives as starting materials.
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Affiliation(s)
- Jorge Escorihuela
- Departamento de Química Orgánica, Universitat de València, Avda. Vicente Andrés Estellés s/n, Burjassot 46100, València, Spain
| | - Santos Fustero
- Departamento de Química Orgánica, Universitat de València, Avda. Vicente Andrés Estellés s/n, Burjassot 46100, València, Spain
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2
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Escorihuela J, Sedgwick DM, Llobat A, Medio-Simón M, Barrio P, Fustero S. Pauson-Khand reaction of fluorinated compounds. Beilstein J Org Chem 2020; 16:1662-1682. [PMID: 32733610 PMCID: PMC7372243 DOI: 10.3762/bjoc.16.138] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2020] [Accepted: 07/02/2020] [Indexed: 12/11/2022] Open
Abstract
The Pauson-Khand reaction (PKR) is one of the key methods for the construction of cyclopentenone derivatives, which can in turn undergo diverse chemical transformations to yield more complex biologically active molecules. Despite the increasing availability of fluorinated building blocks and methodologies to incorporate fluorine in compounds with biological interest, there have been few significant advances focused on the fluoro-Pauson-Khand reaction, both in the inter- and intramolecular versions. Furthermore, the use of vinyl fluorides as olefinic counterparts had been completely overlooked. In this review, we collect the advances both on the stoichiometric and catalytic intermolecular and intramolecular fluoro-Pauson-Khand reaction, with special attention to the PKR of enynes containing a fluoride moiety.
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Affiliation(s)
- Jorge Escorihuela
- Departamento de Química Orgánica, Facultad de Farmacia, Universitat de València, Av. Vicent Andrés Estellés s/n, 46100 Burjassot, Valencia, Spain
| | - Daniel M Sedgwick
- Departamento de Química Orgánica, Facultad de Farmacia, Universitat de València, Av. Vicent Andrés Estellés s/n, 46100 Burjassot, Valencia, Spain
| | - Alberto Llobat
- Departamento de Química Orgánica, Facultad de Farmacia, Universitat de València, Av. Vicent Andrés Estellés s/n, 46100 Burjassot, Valencia, Spain
| | - Mercedes Medio-Simón
- Departamento de Química Orgánica, Facultad de Farmacia, Universitat de València, Av. Vicent Andrés Estellés s/n, 46100 Burjassot, Valencia, Spain
| | - Pablo Barrio
- Departmento de Química Orgánica e Inorgánica, Facultad de Química, Universidad de Oviedo, Av. Julián Clavería 8, Campus Universitario de El Cristo, 33006 Oviedo, Spain
| | - Santos Fustero
- Departamento de Química Orgánica, Facultad de Farmacia, Universitat de València, Av. Vicent Andrés Estellés s/n, 46100 Burjassot, Valencia, Spain
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3
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Cabré A, Riera A, Verdaguer X. P-Stereogenic Amino-Phosphines as Chiral Ligands: From Privileged Intermediates to Asymmetric Catalysis. Acc Chem Res 2020; 53:676-689. [PMID: 32105437 DOI: 10.1021/acs.accounts.9b00633] [Citation(s) in RCA: 46] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Among chiral phosphines, P-stereogenic phosphines provide unparalleled activity and selectivity and have thus emerged as "state-of-the-art" ligands for asymmetric hydrogenation and other industrially relevant processes. However, the synthesis of this type of ligand implies lengthy multistep sequences, which are a hurdle for many laboratories. There is a lack of methods for the rapid construction of P-stereogenic phosphine ligands. In this respect, P-stereogenic synthons that can be rapidly incorporated into a given ligand scaffold are highly desirable. Over the last 10 years, our group has unveiled that P-stereogenic aminophosphines can be rapidly assembled in a convenient fashion from the corresponding primary aminophosphine and/or the corresponding phosphinous acid.Using cis-1-amino-2-indanol as chiral auxiliary, we devised a multigram synthesis of tert-butylmethylaminophosphine borane and tert-butylmethylphosphinous acid borane, which are key intermediate synthons. Primary aminophosphine works as nucleophilic intermediates at nitrogen. From this synthon, aminodiphosphine (MaxPHOS) and secondary imino phosphoranes (SIP) ligands were synthesized. These ligands exhibit a tautomeric equilibrium between the PH and NH forms, and because of that, they do not undergo oxidation in air. NH/PH tautomerism does not jeopardize their configurational stability, and most importantly, in the presence of a metal source, the equilibrium is shifted toward the NH form, thus allowing coordination through phosphorus. Rh-MaxPHOS and Rh-SIP complexes have been used in asymmetric hydrogenation and [2 + 2 + 2] cycloaddition reactions with outstanding results. On the other hand, P-stereogenic phosphinous acid, upon activation, serves as an electrophilic reagent with amine nucleophiles, allowing SN2 reactions at phosphorus with complete inversion of configuration. This coupling technology exhibits a great potential because it allows the incorporation of the P*-phosphine fragment in numerous ligand structures, provided there is an amino group with which to react. In a mild and efficient process, phosphinous acid has been coupled to hydrazine to yield C2 diphosphines and to chiral benzoimidazole-amines to yield P-stereogenic benzoimidazole-phosphine ligands. The most powerful ligand system, however, arises from the condensation of three independent fragments: our phosphinous acid borane, an amino acid, and an amino alcohol, which yields a library of phosphino-oxazoline ligands named MaxPHOX. The corresponding Ir-MaxPHOX catalyst library was applied with excellent results in the asymmetric hydrogenation of α,β-unsaturated esters, 2-aryl allyl phthalimides, unfunctionalized tetrasubstituted alkenes, cyclic enamides, and N-aryl and N-methyl imines. It also has found application in asymmetric isomerization of alkenes.Overall, we developed key P-stereogenic building blocks that can be incorporated stereospecifically to ligand scaffolds and demonstrated that integration of the P*-aminophosphine fragment in a given catalytic system provides structural diversity that can be a critical contribution to obtaining optimal results and selectivity.
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Affiliation(s)
- Albert Cabré
- Institute for Research in Biomedicine (IRB Barcelona), The Barcelona Institute of Science and Technology (BIST), Baldiri Reixac 10, 08028 Barcelona, Spain
- Departament de Quı́mica Inorgànica i Orgànica, Secció Orgànica, Facultat de Quı́mica, Universitat de Barcelona, Martí i Franqués 1, 08028 Barcelona, Spain
| | - Antoni Riera
- Institute for Research in Biomedicine (IRB Barcelona), The Barcelona Institute of Science and Technology (BIST), Baldiri Reixac 10, 08028 Barcelona, Spain
- Departament de Quı́mica Inorgànica i Orgànica, Secció Orgànica, Facultat de Quı́mica, Universitat de Barcelona, Martí i Franqués 1, 08028 Barcelona, Spain
| | - Xavier Verdaguer
- Institute for Research in Biomedicine (IRB Barcelona), The Barcelona Institute of Science and Technology (BIST), Baldiri Reixac 10, 08028 Barcelona, Spain
- Departament de Quı́mica Inorgànica i Orgànica, Secció Orgànica, Facultat de Quı́mica, Universitat de Barcelona, Martí i Franqués 1, 08028 Barcelona, Spain
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4
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Liu G, Zhang X, Kuang G, Lu N, Fu Y, Peng Y, Xiao Q, Zhou Y. Phosphine-Free Ru-Catalyzed Regio- and Stereoselective Addition of Benzoic Acids to Trifluoromethylated Alkynes toward Facile Access to Trifluoromethyl Group-Substituted ( E)-Enol Esters. ACS OMEGA 2020; 5:4158-4166. [PMID: 32149245 PMCID: PMC7057715 DOI: 10.1021/acsomega.9b03936] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/18/2019] [Accepted: 11/25/2019] [Indexed: 06/10/2023]
Abstract
A combination of ruthenium catalyst with silver salt and copper salt was proved to be a highly efficient protocol for the direct addition reaction of benzoic acids with unsymmetrical trifluoromethylated internal alkynes. Diverse trifluoromethyl group-substituted (E)-enol esters were readily obtained for a broad substrate scope in moderate to good yields with excellent regio- and stereoselectivities under mild reaction conditions.
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Affiliation(s)
- Guangyuan Liu
- Key
Laboratory of Functional Small Organic Molecule, Ministry of Education,
College of Chemistry and Chemical Engineering, Jiangxi Normal University, No. 99 Ziyang Road, Nanchang 330022, China
| | - Xingxing Zhang
- Key
Laboratory of Functional Small Organic Molecule, Ministry of Education,
College of Chemistry and Chemical Engineering, Jiangxi Normal University, No. 99 Ziyang Road, Nanchang 330022, China
| | - Guanghua Kuang
- Key
Laboratory of Functional Small Organic Molecule, Ministry of Education,
College of Chemistry and Chemical Engineering, Jiangxi Normal University, No. 99 Ziyang Road, Nanchang 330022, China
| | - Naihao Lu
- Key
Laboratory of Functional Small Organic Molecule, Ministry of Education,
College of Chemistry and Chemical Engineering, Jiangxi Normal University, No. 99 Ziyang Road, Nanchang 330022, China
| | - Yang Fu
- Key
Laboratory of Functional Small Organic Molecule, Ministry of Education,
College of Chemistry and Chemical Engineering, Jiangxi Normal University, No. 99 Ziyang Road, Nanchang 330022, China
| | - Yiyuan Peng
- Key
Laboratory of Functional Small Organic Molecule, Ministry of Education,
College of Chemistry and Chemical Engineering, Jiangxi Normal University, No. 99 Ziyang Road, Nanchang 330022, China
| | - Qiang Xiao
- Jiangxi
Key Laboratory of Functional Organic Molecules, Jiangxi Science and Technology Normal University, No. 605 Fenglin Road, Nanchang 330013, China
| | - Yirong Zhou
- Key
Laboratory of Functional Small Organic Molecule, Ministry of Education,
College of Chemistry and Chemical Engineering, Jiangxi Normal University, No. 99 Ziyang Road, Nanchang 330022, China
- Hubei
Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation,
School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, No. 13 Hangkong Road, Wuhan 430030, China
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5
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Román R, Mateu N, López I, Medio-Simon M, Fustero S, Barrio P. Vinyl Fluorides: Competent Olefinic Counterparts in the Intramolecular Pauson–Khand Reaction. Org Lett 2019; 21:2569-2573. [DOI: 10.1021/acs.orglett.9b00509] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Raquel Román
- Departamento de Química Orgánica, Universidad de Valencia, E-46100 Burjassot, Spain
| | - Natalia Mateu
- Laboratorio de Moléculas Orgánicas, Centro de Investigación Príncipe Felipe, E-46012 Valencia, Spain
| | - Inés López
- Departamento de Química Orgánica, Universidad de Valencia, E-46100 Burjassot, Spain
| | - Mercedes Medio-Simon
- Departamento de Química Orgánica, Universidad de Valencia, E-46100 Burjassot, Spain
| | - Santos Fustero
- Departamento de Química Orgánica, Universidad de Valencia, E-46100 Burjassot, Spain
- Laboratorio de Moléculas Orgánicas, Centro de Investigación Príncipe Felipe, E-46012 Valencia, Spain
| | - Pablo Barrio
- Departamento de Química Orgánica, Universidad de Valencia, E-46100 Burjassot, Spain
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6
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Chiu HC, Tonks IA. Trimethylsilyl-Protected Alkynes as Selective Cross-Coupling Partners in Titanium-Catalyzed [2+2+1] Pyrrole Synthesis. Angew Chem Int Ed Engl 2018; 57:6090-6094. [PMID: 29573100 DOI: 10.1002/anie.201800595] [Citation(s) in RCA: 69] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2018] [Indexed: 11/05/2022]
Abstract
Trimethylsilyl (TMS)-protected alkynes served as selective alkyne cross-coupling partners in titanium-catalyzed [2+2+1] pyrrole synthesis. Reactions of TMS-protected alkynes with internal alkynes and azobenzene under the catalysis of titanium imido complexes yielded pentasubstituted 2-TMS-pyrroles with greater than 90 % selectivity over the other nine possible pyrrole products. The steric and electronic effects of the TMS group were both identified to play key roles in this highly selective pyrrole synthesis. This strategy provides a convenient method to synthesize multisubstituted pyrroles as well as an entry point for further pyrrole diversification through facile modification of the resulting 2-silyl pyrrole products, as demonstrated through a short formal synthesis of the marine natural product lamellarin R.
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Affiliation(s)
- Hsin-Chun Chiu
- Department of Chemistry, University of Minnesota-Twin Cities, 207 Pleasant Sreet SE, Minneapolis, MN, 55455, USA
| | - Ian A Tonks
- Department of Chemistry, University of Minnesota-Twin Cities, 207 Pleasant Sreet SE, Minneapolis, MN, 55455, USA
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7
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Chiu H, Tonks IA. Trimethylsilyl‐Protected Alkynes as Selective Cross‐Coupling Partners in Titanium‐Catalyzed [2+2+1] Pyrrole Synthesis. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201800595] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Hsin‐Chun Chiu
- Department of Chemistry University of Minnesota—Twin Cities 207 Pleasant Sreet SE Minneapolis MN 55455 USA
| | - Ian A. Tonks
- Department of Chemistry University of Minnesota—Twin Cities 207 Pleasant Sreet SE Minneapolis MN 55455 USA
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8
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Abstract
The Pauson-Khand [2+2+1] cycloaddition of alkynes, alkenes, and carbon monoxide has been a vibrant area of research for more than 40 years. This review highlights recent achievements in the Pauson-Khand reaction, particularly in catalytic and asymmetric variants. Discussion of regioselectivity and advances in substrate scope is also presented.
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Affiliation(s)
- J David Ricker
- University of Nevada, Reno, Department of Chemistry, Reno, NV 89557, USA
| | - Laina M Geary
- University of Nevada, Reno, Department of Chemistry, Reno, NV 89557, USA
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9
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Rodriguez AM, Prieto P. New insights in the mechanism of the microwave-assisted Pauson–Khand reaction. Tetrahedron 2016. [DOI: 10.1016/j.tet.2016.09.048] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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10
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Ji YL, Luo JJ, Lin JH, Xiao JC, Gu YC. Cu-Catalyzed C-H Trifluoromethylation of 3-Arylprop-1-ynes for the Selective Construction of Allenic Csp(2)-CF3 and Propargyl Csp(3)-CF3 Bonds. Org Lett 2016; 18:1000-3. [PMID: 26883382 DOI: 10.1021/acs.orglett.6b00120] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A new method has been developed for the Cu-catalyzed C-H trifluoromethylation of 3-arylprop-1-ynes for the selective construction of allenic Csp(2)-CF3 and propargyl Csp(3)-CF3 bonds. The selective formation of allenic Csp(2)-CF3 and propargyl Csp(3)-CF3 bonds can be controlled by modifying the reaction conditions.
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Affiliation(s)
- Yun-Long Ji
- Key Laboratory of Organofluorine Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences , 345 Lingling Road, Shanghai 200032, China
| | - Jia-Jia Luo
- Key Laboratory of Organofluorine Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences , 345 Lingling Road, Shanghai 200032, China
| | - Jin-Hong Lin
- Key Laboratory of Organofluorine Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences , 345 Lingling Road, Shanghai 200032, China
| | - Ji-Chang Xiao
- Key Laboratory of Organofluorine Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences , 345 Lingling Road, Shanghai 200032, China
| | - Yu-Cheng Gu
- Syngenta, Jealott's Hill International Research Centre, Bracknell, Berkshire RG42 6EY, U.K
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11
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Sakaguchi Y, Nakazaki Y, Moriyasu K, Konno T. Selective synthesis of fluoroalkyl-containing multisubstituted benzenes through Co-mediated [2+2+2] cycloaddition reaction with fluoroalkylated alkynes. J Fluor Chem 2015. [DOI: 10.1016/j.jfluchem.2015.06.013] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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12
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Uruvakili A, Gangadhararao G, Kumara Swamy KC. Gold(I) catalysed sequential dehydrative cyclisation/intermolecular [4 + 2] cycloaddition of alkynyldienols onto activated alkynes/alkenes: a facile route to substituted norbornadienes/norbornenes. Org Biomol Chem 2015; 13:10060-71. [PMID: 26335651 DOI: 10.1039/c5ob01458a] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
One-pot synthesis of highly substituted norbornadienes/norbornenes via gold-catalysed dehydrative cyclisation of alkynyldienols, followed by intermolecular [4 + 2] cycloaddition of in situ generated cyclopentadiene and activated alkynes/alkenes is described. The precursors, alkynyldienols, are obtained via sequential Sonogashira cross-coupling of 3-bromoenals, alkyne addition and reduction. Yields of the enynals and multisubstituted norbornadienes in all the cases are good to excellent.
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Affiliation(s)
- Anasuyamma Uruvakili
- School of Chemistry, University of Hyderabad, Hyderabad-500046, Telangana, India.
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13
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Zhu SQ, Xu XH, Qing FL. Copper-mediated oxidative difluoromethylation of terminal alkynes with TMSCF2H. Org Chem Front 2015. [DOI: 10.1039/c5qo00186b] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A copper-mediated oxidative coupling of terminal alkynes and TMSCF2H has been described for the preparation of various difluoromethylated alkynes.
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Affiliation(s)
- Sheng-Qing Zhu
- Key Laboratory of Organofluorine Chemistry
- Shanghai Institute of Organic Chemistry
- Chinese Academy of Sciences
- Shanghai 200032
- China
| | - Xiu-Hua Xu
- Key Laboratory of Organofluorine Chemistry
- Shanghai Institute of Organic Chemistry
- Chinese Academy of Sciences
- Shanghai 200032
- China
| | - Feng-Ling Qing
- Key Laboratory of Organofluorine Chemistry
- Shanghai Institute of Organic Chemistry
- Chinese Academy of Sciences
- Shanghai 200032
- China
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14
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Li L, Guo JY, Liu XG, Chen S, Wang Y, Tan B, Liu XY. Amide Groups Switch Selectivity: C–H Trifluoromethylation of α,β-Unsaturated Amides and Subsequent Asymmetric Transformation. Org Lett 2014; 16:6032-5. [DOI: 10.1021/ol503067g] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Lei Li
- Department
of Chemistry, South University of Science and Technology of China, Shenzhen, 518055, P. R. China
| | - Jing-Yao Guo
- Department
of Chemistry, South University of Science and Technology of China, Shenzhen, 518055, P. R. China
| | - Xing-Guo Liu
- School
of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou, P. R. China
| | - Su Chen
- Department
of Chemistry, South University of Science and Technology of China, Shenzhen, 518055, P. R. China
| | - Yong Wang
- College
of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, P. R. China
| | - Bin Tan
- Department
of Chemistry, South University of Science and Technology of China, Shenzhen, 518055, P. R. China
| | - Xin-Yuan Liu
- Department
of Chemistry, South University of Science and Technology of China, Shenzhen, 518055, P. R. China
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15
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Fager-Jokela E, Muuronen M, Khaizourane H, Vázquez-Romero A, Verdaguer X, Riera A, Helaja J. Regioselectivity of Intermolecular Pauson–Khand Reaction of Aliphatic Alkynes: Experimental and Theoretical Study of the Effect of Alkyne Polarization. J Org Chem 2014; 79:10999-1010. [DOI: 10.1021/jo502035t] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Erika Fager-Jokela
- Laboratory
of Organic Chemistry, Department of Chemistry, University of Helsinki, A. I. Virtasen aukio 1, P.O. Box 55, University
of Helsinki FIN-00014, Finland
| | - Mikko Muuronen
- Laboratory
of Organic Chemistry, Department of Chemistry, University of Helsinki, A. I. Virtasen aukio 1, P.O. Box 55, University
of Helsinki FIN-00014, Finland
| | - Héléa Khaizourane
- Institute for Research in Biomedicine (IRB Barcelona), Baldiri Reixac, 10, Barcelona 08028, Spain
| | - Ana Vázquez-Romero
- Institute for Research in Biomedicine (IRB Barcelona), Baldiri Reixac, 10, Barcelona 08028, Spain
| | - Xavier Verdaguer
- Institute for Research in Biomedicine (IRB Barcelona), Baldiri Reixac, 10, Barcelona 08028, Spain
- Departament
de Química Orgànica, Universitat de Barcelona, Martí
i Franquès, 1-11, Barcelona 08028, Spain
| | - Antoni Riera
- Institute for Research in Biomedicine (IRB Barcelona), Baldiri Reixac, 10, Barcelona 08028, Spain
- Departament
de Química Orgànica, Universitat de Barcelona, Martí
i Franquès, 1-11, Barcelona 08028, Spain
| | - Juho Helaja
- Laboratory
of Organic Chemistry, Department of Chemistry, University of Helsinki, A. I. Virtasen aukio 1, P.O. Box 55, University
of Helsinki FIN-00014, Finland
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16
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Besset T, Poisson T, Pannecoucke X. Recent progress in direct introduction of fluorinated groups on alkenes and alkynes by means of C-H bond functionalization. Chemistry 2014; 20:16830-45. [PMID: 25349030 DOI: 10.1002/chem.201404537] [Citation(s) in RCA: 215] [Impact Index Per Article: 21.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2014] [Indexed: 12/27/2022]
Abstract
The direct introduction of fluorine and fluorinated building blocks has recently attracted a lot of attention and particularly the direct functionalization of alkenes and alkynes. This review will highlight the major progress recently made in that field, with a focus on photocatalyzed transformations, base-promoted processes, and transition metal-catalyzed functionalization of alkenes and alkynes. Special attention will be paid to explanations of the reaction mechanisms.
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Affiliation(s)
- Tatiana Besset
- COBRA UMR CNRS 6014, Bâtiment IRCOF, 1 rue Tesnière, 76821 Mont Saint Aignan Cedex (France).
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17
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Lin QY, Xu XH, Qing FL. Chemo-, Regio-, and Stereoselective Trifluoromethylation of Styrenes via Visible Light-Driven Single-Electron Transfer (SET) and Triplet–Triplet Energy Transfer (TTET) Processes. J Org Chem 2014; 79:10434-46. [DOI: 10.1021/jo502040t] [Citation(s) in RCA: 112] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Qing-Yu Lin
- Key
Laboratory of Organofluorine Chemistry, Shanghai Institute of Organic
Chemistry, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai 200032, China
| | - Xiu-Hua Xu
- Key
Laboratory of Organofluorine Chemistry, Shanghai Institute of Organic
Chemistry, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai 200032, China
| | - Feng-Ling Qing
- Key
Laboratory of Organofluorine Chemistry, Shanghai Institute of Organic
Chemistry, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai 200032, China
- College
of Chemistry, Chemical Engineering and Biotechnology, Donghua University, 2999 North Renmin Lu, Shanghai 201620, China
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18
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Tresse C, Guissart C, Schweizer S, Bouhoute Y, Chany AC, Goddard ML, Blanchard N, Evano G. Practical Methods for the Synthesis of Trifluoromethylated Alkynes: Oxidative Trifluoromethylation of Copper Acetylides and Alkynes. Adv Synth Catal 2014. [DOI: 10.1002/adsc.201400057] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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19
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Fang Z, Ning Y, Mi P, Liao P, Bi X. Catalytic C-H α-trifluoromethylation of α,β-unsaturated carbonyl compounds. Org Lett 2014; 16:1522-5. [PMID: 24555707 DOI: 10.1021/ol5004498] [Citation(s) in RCA: 89] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A copper(I)-catalyzed, regioselective C-H α-trifluoromethylation of α,β-unsaturated carbonyl compounds using Togni's reagent was developed. Diverse substrates, including enones as well as α,β-unsaturated esters, thioesters, and amides, stereospecifically afforded the corresponding (E)-α-trifluoromethylated products in moderate to high yields. Further, this method was applied to the C-H trifluoromethylation of drugs.
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Affiliation(s)
- Zhongxue Fang
- Department of Chemistry, Northeast Normal University , Changchun 130024, China
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Aiguabella N, Arce EM, Del Pozo C, Verdaguer X, Riera A. Pauson-Khand reaction of internal dissymmetric trifluoromethyl alkynes. Influence of the alkene on the regioselectivity. Molecules 2014; 19:1763-74. [PMID: 24496269 PMCID: PMC6271263 DOI: 10.3390/molecules19021763] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2014] [Revised: 01/15/2014] [Accepted: 01/27/2014] [Indexed: 11/23/2022] Open
Abstract
The scope of the Pauson-Khand reaction (PKR) of internal trifluoromethyl alkynes, previously described with norbornadiene, is expanded to norbornene and ethylene. A thorough structural analysis of the resulting PK adducts has been carried out to unveil that α-trifluoromethylcyclopentenones are preferred in all cases, independently of the electronic properties of the alkyne. The regioselectivity observed with norbornadiene and ethylene is higher than in the case of norbornene.
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Affiliation(s)
- Nuria Aiguabella
- Institute for Research in Biomedicine (IRB Barcelona), Baldiri i Reixac, 10. 08028 Barcelona, Spain.
| | - Elsa M Arce
- Institute for Research in Biomedicine (IRB Barcelona), Baldiri i Reixac, 10. 08028 Barcelona, Spain.
| | - Carlos Del Pozo
- Department de Química Orgánica, Universidad de Valencia, E-46100 Burjassot, Spain.
| | - Xavier Verdaguer
- Institute for Research in Biomedicine (IRB Barcelona), Baldiri i Reixac, 10. 08028 Barcelona, Spain.
| | - Antoni Riera
- Institute for Research in Biomedicine (IRB Barcelona), Baldiri i Reixac, 10. 08028 Barcelona, Spain.
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