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Boyet M, Chabaud L, Pucheault M. Recent Advances in the Synthesis of Borinic Acid Derivatives. Molecules 2023; 28:molecules28062660. [PMID: 36985634 PMCID: PMC10057197 DOI: 10.3390/molecules28062660] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2023] [Revised: 03/03/2023] [Accepted: 03/08/2023] [Indexed: 03/18/2023] Open
Abstract
Borinic acids [R2B(OH)] and their chelate derivatives are a subclass of organoborane compounds used in cross-coupling reactions, catalysis, medicinal chemistry, polymer or optoelectronics materials. In this paper, we review the recent advances in the synthesis of diarylborinic acids and their four-coordinated analogs. The main strategies to build up borinic acids rely either on the addition of organometallic reagents to boranes (B(OR)3, BX3, aminoborane, arylboronic esters) or the reaction of triarylboranes with a ligand (diol, amino alcohol, etc.). After general practical considerations of borinic acids, an overview of the main synthetic methods, their scope and limitations is provided. We also discuss some mechanistic aspects.
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Hansjacob P, Leroux FR, Gandon V, Donnard M. Palladium-Catalyzed Silylcyanation of Ynamides: Regio- and Stereoselective Access to Tetrasubstituted 3-Silyl-2-Aminoacrylonitriles. Angew Chem Int Ed Engl 2022; 61:e202200204. [PMID: 35060272 DOI: 10.1002/anie.202200204] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2022] [Indexed: 01/02/2023]
Abstract
The palladium-catalyzed silylcyanation of ynamides is described. This reaction is fully regioselective, delivering tetrasubstituted 2-aminoacrylonitriles derivatives exclusively. Unexpectedly, the nature (aryl or alkyl) of the substituent located at the β-position of the ynamide directly controls the stereoselectivity. The reaction tolerates a number of functional groups and can be considered as the first general access to fully substituted 2-aminoacrylonitriles. Given the singular reactivity observed, a computational study was performed to shed light on the mechanism of this intriguing transformation. Relying on the specific reactivity of the newly installed vinylsilane functionality, the scope of 2-aminoacrylonitriles has been enlarged by postfunctionalization.
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Affiliation(s)
- Pierre Hansjacob
- Laboratoire d'Innovation Moléculaire et Applications (UMR 7042), Université de Strasbourg, Université de Haute-Alsace, CNRS, 67000, Strasbourg, France
| | - Frédéric R Leroux
- Laboratoire d'Innovation Moléculaire et Applications (UMR 7042), Université de Strasbourg, Université de Haute-Alsace, CNRS, 67000, Strasbourg, France
| | - Vincent Gandon
- Institut de Chimie Moléculaire et des Matériaux d'Orsay, CNRS UMR 8182, Université Paris-Saclay, Bâtiment 420, 91405, Orsay cedex, France.,Laboratoire de Chimie Moléculaire (LCM), CNRS UMR 9168, Ecole Polytechnique, Institut Polytechnique de Paris, route de Saclay, 91128, Palaiseau cedex, France
| | - Morgan Donnard
- Laboratoire d'Innovation Moléculaire et Applications (UMR 7042), Université de Strasbourg, Université de Haute-Alsace, CNRS, 67000, Strasbourg, France
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Hansjacob P, Leroux FR, Gandon V, Donnard M. Palladium‐Catalyzed Silylcyanation of Ynamides: Regio‐ and Stereoselective Access to Tetrasubstituted 3‐Silyl‐2‐Aminoacrylonitriles. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202200204] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Pierre Hansjacob
- Laboratoire d'Innovation Moléculaire et Applications (UMR 7042) Université de Strasbourg Université de Haute-Alsace CNRS 67000 Strasbourg France
| | - Frédéric R. Leroux
- Laboratoire d'Innovation Moléculaire et Applications (UMR 7042) Université de Strasbourg Université de Haute-Alsace CNRS 67000 Strasbourg France
| | - Vincent Gandon
- Institut de Chimie Moléculaire et des Matériaux d'Orsay CNRS UMR 8182 Université Paris-Saclay Bâtiment 420 91405 Orsay cedex France
- Laboratoire de Chimie Moléculaire (LCM) CNRS UMR 9168 Ecole Polytechnique Institut Polytechnique de Paris route de Saclay 91128 Palaiseau cedex France
| | - Morgan Donnard
- Laboratoire d'Innovation Moléculaire et Applications (UMR 7042) Université de Strasbourg Université de Haute-Alsace CNRS 67000 Strasbourg France
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Svobodová M, Svoboda J, Li BH, Bertolasi V, Socha L, Sedlák M, Marek L. Synthesis and Characterization of New Boron Compounds Using Reaction of Diazonium Tetraphenylborate with Enaminoamides. Molecules 2022; 27:molecules27020367. [PMID: 35056681 PMCID: PMC8782005 DOI: 10.3390/molecules27020367] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2021] [Revised: 12/30/2021] [Accepted: 01/04/2022] [Indexed: 11/30/2022] Open
Abstract
A family of oxazaborines, diazaborinones, triazaborines, and triazaborinones was prepared by reaction of polarized ethylenes, such as β-enaminoamides, with 4-methylbenzenediazonium tetraphenylborates. The reaction conditions (stirring in CH2Cl2 at room temperature (Method A) or stirring with CH3COONa in CH2Cl2 at room temperature (Method B) or refluxing in the CH2Cl2/toluene mixture (Method C)) controlled the formation and relative content of these compounds in the reaction mixtures from one to three products. Substituted oxazaborines gradually rearranged into diazaborinones at 250 °C. The prepared compounds were characterized by 1H NMR, 13C NMR, IR, and UV–Vis spectroscopy, HRMS, or microanalysis. The structure of individual compounds was confirmed by 11B NMR, 15N NMR, 1D NOESY, and X-ray analysis. The mechanism of reaction of enaminoamides with 4-methylbenzenediazonium tetraphenylborate was proposed.
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Affiliation(s)
- Markéta Svobodová
- Faculty of Chemical Technology, Institute of Organic Chemistry and Technology, University of Pardubice, Studentská 573, 532 10 Pardubice, Czech Republic; (J.S.); (L.S.); (M.S.); (L.M.)
- Correspondence:
| | - Jan Svoboda
- Faculty of Chemical Technology, Institute of Organic Chemistry and Technology, University of Pardubice, Studentská 573, 532 10 Pardubice, Czech Republic; (J.S.); (L.S.); (M.S.); (L.M.)
| | - Bing-Han Li
- Department of Chemistry, National Tsing Hua University, Hsinchu 30013, Taiwan;
| | - Valerio Bertolasi
- Department of Chemical and Pharmaceutical Sciences, University of Ferrara, Via L. Borsari 46, 44121 Ferrara, Italy;
| | - Luboš Socha
- Faculty of Chemical Technology, Institute of Organic Chemistry and Technology, University of Pardubice, Studentská 573, 532 10 Pardubice, Czech Republic; (J.S.); (L.S.); (M.S.); (L.M.)
| | - Miloš Sedlák
- Faculty of Chemical Technology, Institute of Organic Chemistry and Technology, University of Pardubice, Studentská 573, 532 10 Pardubice, Czech Republic; (J.S.); (L.S.); (M.S.); (L.M.)
| | - Lukáš Marek
- Faculty of Chemical Technology, Institute of Organic Chemistry and Technology, University of Pardubice, Studentská 573, 532 10 Pardubice, Czech Republic; (J.S.); (L.S.); (M.S.); (L.M.)
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López-López JC, Bautista D, González-Herrero P. Stereoselective Formation of Facial Tris-Cyclometalated Pt IV Complexes: Dual Phosphorescence from Heteroleptic Derivatives. Chemistry 2020; 26:11307-11315. [PMID: 32227518 DOI: 10.1002/chem.202001164] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2020] [Revised: 03/27/2020] [Indexed: 11/08/2022]
Abstract
A stereoselective synthetic route to homo- and heteroleptic facial tris-cyclometalated PtIV complexes is reported, involving the oxidative addition of 2-(2-pyridyl)- or 2-(1-isoquinolinyl)benzenediazonium salts to cis-[Pt(C^N)2 ] precursors, with C^N=cyclometalated 2-(p-tolyl)pyridine (tpy), 2-phenylquinoline (pq), 2-(2-thienyl)pyridine or 1-phenylisoquinoline (piq), to produce labile diazenide intermediates that undergo photochemical or thermal elimination of N2 . The method allows the preparation of derivatives bearing cyclometalated ligands of low π-π* transition energies. The new complexes exhibit phosphorescence in fluid solution at room temperature arising from triplet ligand-centered (3 LC) excited states, which, in the cases of the heteroleptic derivatives, involve the ligand with the lowest π-π* gap. The heteroleptic piq derivatives exhibit fluorescence and dual phosphorescence from different ligand-centered excited states in rigid media, demonstrating the potential of cyclometalated PtIV complexes as multi-emissive materials.
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Affiliation(s)
- Juan Carlos López-López
- Departamento de Química Inorgánica, Universidad de Murcia, Campus de Espinardo, 19, 30100, Murcia, Spain
| | - Delia Bautista
- ACTI, Universidad de Murcia, Campus de Espinardo, 21, 30100, Murcia, Spain
| | - Pablo González-Herrero
- Departamento de Química Inorgánica, Universidad de Murcia, Campus de Espinardo, 19, 30100, Murcia, Spain
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Doušová H, Almonasy N, Mikysek T, Váňa J, Nepraš M, Frumarová B, Dvořák M, Růžičková Z, Šimůnek P. Synthesis, spectral and electrochemical properties of selected boron ketiminates with aminocoumarin fragment. MONATSHEFTE FUR CHEMIE 2018. [DOI: 10.1007/s00706-018-2262-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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Four-coordinate six-membered ketiminate and diketiminate boron complexes. Synthesis, structure, reactivity, and application in the design of nitrogen heterocycles. Russ Chem Bull 2017. [DOI: 10.1007/s11172-017-1901-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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Synthesis and Pharmacological Activities of Pyrano[2,3-d]pyrimidine and Pyrano[2,3-d]pyrimidine-5-one Derivatives as New Fused Heterocyclic Systems. J CHEM-NY 2017. [DOI: 10.1155/2017/5373049] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Various fused oxazine such as 4-(4-methoxyphenyl)-3,7-dimethyl-1,4-dihydro-5H-pyrazolo [4′,3′:5,6]pyrano[2,3-d][1,3]oxazin-5-one2has been prepared and utilized as a starting material for novel pyrazolopyranopyrimidinones3,5,6, and7a–cand pyrazolopyranopyrimidines4,9,10, and11which are expected to possess considerable chemical and pharmacological activities. The structures of the new compounds have been elucidated by spectroscopic data and elemental analysis. The antioxidant and anticancer activities of synthesized products have been evaluated.
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Mikysek T, Kvapilová H, Doušová H, Josefík F, Šimůnek P, Růžičková Z, Ludvík J. Synthesis, electrochemical, structural and theoretical study of new derivatives of OBN and OBO heterocycles. Inorganica Chim Acta 2017. [DOI: 10.1016/j.ica.2016.08.009] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Synthesis, NMR, X-ray and UV/Vis characterization and preliminary luminescence study of some boron β-iminoenolates having 6-aminocoumarin moiety. J Organomet Chem 2016. [DOI: 10.1016/j.jorganchem.2015.11.016] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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Wang BJ, Groziak MP. Recent Developments in the Chemistry of Boron Heterocycles. ADVANCES IN HETEROCYCLIC CHEMISTRY 2016. [DOI: 10.1016/bs.aihch.2015.10.002] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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Pietsch S, Neeve EC, Apperley DC, Bertermann R, Mo F, Qiu D, Cheung MS, Dang L, Wang J, Radius U, Lin Z, Kleeberg C, Marder TB. Synthesis, Structure, and Reactivity of Anionic sp2-sp3Diboron Compounds: Readily Accessible Boryl Nucleophiles. Chemistry 2015; 21:7082-98. [DOI: 10.1002/chem.201500235] [Citation(s) in RCA: 152] [Impact Index Per Article: 16.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2015] [Indexed: 01/20/2023]
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Josefík F, Mikysek T, Svobodová M, Šimůnek P, Kvapilová H, Ludvík J. New Triazaborine Chromophores: Their Synthesis via Oxazaborines and Electrochemical and DFT Study of Their Fundamental Properties. Organometallics 2014. [DOI: 10.1021/om500219g] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
| | | | | | | | - Hana Kvapilová
- J. Heyrovský Institute of Physical Chemistry ASCR, v.v.i., Dolejškova 3, CZ-182 23 Prague 8, Czech Republic
| | - Jiří Ludvík
- J. Heyrovský Institute of Physical Chemistry ASCR, v.v.i., Dolejškova 3, CZ-182 23 Prague 8, Czech Republic
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Josefík F, Svobodová M, Bertolasi V, Šimůnek P. A simple, enaminone-based approach to some bicyclic pyridazinium tetrafluoroborates. Beilstein J Org Chem 2013; 9:1463-71. [PMID: 23946844 PMCID: PMC3740584 DOI: 10.3762/bjoc.9.166] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2013] [Accepted: 06/28/2013] [Indexed: 11/23/2022] Open
Abstract
Easily obtainable cyclic enaminones (piperidin-2-ylidenealkanones) can be transformed into substituted bicyclic pyridazinium tetrafluoroborates upon treatment with corresponding diazonium salts. The transformation can be performed either in a one-pot way or in a two-step process with the isolation of single azo-coupled enaminone as the intermediate. The former method is superior. Under the optimized conditions, a number of pyridazinium salts substituted with both electron-donating and electron-withdrawing substituents was easily synthesized. A mechanism of the formation of the pyridazinium salts is suggested. A partial drawback is the possibility of the formation of a mixture of products when using a different diazonium salt in each step due to a reversibility of the azo coupling. This can be suppressed by using a more reactive diazonium salt before a less reactive one.
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Affiliation(s)
- František Josefík
- Institute of Organic Chemistry and Technology, Faculty of Chemical Technology, University of Pardubice, Studentská 573, CZ 532 10, Pardubice, Czech Republic
| | - Markéta Svobodová
- Institute of Organic Chemistry and Technology, Faculty of Chemical Technology, University of Pardubice, Studentská 573, CZ 532 10, Pardubice, Czech Republic
| | - Valerio Bertolasi
- Dipartimento di Scienze Chimiche e Farmaceutiche, Centro di Strutturistica Diffratometrica, Università di Ferrara, Via L. Borsari 46, 441 00, Ferrara, Italy
| | - Petr Šimůnek
- Institute of Organic Chemistry and Technology, Faculty of Chemical Technology, University of Pardubice, Studentská 573, CZ 532 10, Pardubice, Czech Republic
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