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Hariri M, Darvish F, Mengue Me Ndong KP, Sechet N, Chacktas G, Boosaliki H, Tran Do ML, Mwande-Maguene G, Lebibi J, Burilov AR, Ayad T, Virieux D, Pirat JL. Gold-Catalyzed Access to Isophosphinoline 2-Oxides. J Org Chem 2021; 86:7813-7824. [PMID: 34009995 DOI: 10.1021/acs.joc.1c00648] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Gold(I)-catalyzed reactions of electron-poor alkynes are still a challenging process. A straightforward synthesis of phosphorus-based heterocycles, namely, 2-phenyl 1H-isophosphinoline 2-oxides 1, is reported. The reaction used PPh3AuCl precatalyst in combination with triflic acid under microwave activation and afforded isophosphinoline 2-oxides 1 in moderate to quantitative yields through a fully regioselective 6-endo-dig hydroarylation cyclization, paving the way toward an effective synthesis of phosphorus heterocycles.
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Affiliation(s)
- Mina Hariri
- ICGM, Univ. Montpellier, ENSCM, CNRS, Montpellier, France.,Department of Chemistry, K. N. Toosi University of Technology, P.O. Box, 15875-4416 Tehran, Iran
| | - Fatemeh Darvish
- Department of Chemistry, K. N. Toosi University of Technology, P.O. Box, 15875-4416 Tehran, Iran
| | - Karen-Pacelye Mengue Me Ndong
- ICGM, Univ. Montpellier, ENSCM, CNRS, Montpellier, France.,Université des Sciences et Techniques de Masuku, Franceville, Gabon
| | - Nora Sechet
- ICGM, Univ. Montpellier, ENSCM, CNRS, Montpellier, France
| | | | - Hooriye Boosaliki
- ICGM, Univ. Montpellier, ENSCM, CNRS, Montpellier, France.,Department of Chemistry, K. N. Toosi University of Technology, P.O. Box, 15875-4416 Tehran, Iran
| | | | | | - Jacques Lebibi
- Université des Sciences et Techniques de Masuku, Franceville, Gabon
| | - Alexander R Burilov
- Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center of RAS, Arbuzov str. 8, Kazan 420088, Russian Federation
| | - Tahar Ayad
- ICGM, Univ. Montpellier, ENSCM, CNRS, Montpellier, France
| | - David Virieux
- ICGM, Univ. Montpellier, ENSCM, CNRS, Montpellier, France
| | - Jean-Luc Pirat
- ICGM, Univ. Montpellier, ENSCM, CNRS, Montpellier, France
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2
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Winters KR, Montchamp JL. Evaluation and Development of Methodologies for the Synthesis of Thiophosphinic Acids. J Org Chem 2020; 85:14545-14558. [PMID: 32806089 DOI: 10.1021/acs.joc.0c01151] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Thiophosphorus acids R1R2P(S)OH constitute an important class of organophosphorus compounds, in which the phosphorus atom is intrinsically chiral if R1 ≠ R2. In connection with a project aimed at the preparation of chiral thiophosphorus acids, various available literature methods were considered, but few fit the requirement of odorless reagents. Herein, the results of our studies on the synthesis of thiophosphinic acids are reported. Ultimately, two major approaches were selected: (1) the Stec reaction of phosphorus amides with carbon disulfide; and (2) the one-pot synthesis of thiophosphorus acids from H-phosphinates, an organometallic nucleophile, and quenching with elemental sulfur. An application to the preparation of a potential chiral phosphorus organocatalyst is also reported.
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Affiliation(s)
- Karen R Winters
- Department of Chemistry, Texas Christian University, PO Box 298860, Fort Worth, Texas 76129, United States
| | - Jean-Luc Montchamp
- Department of Chemistry, Texas Christian University, PO Box 298860, Fort Worth, Texas 76129, United States
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3
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Adler P, Pons A, Li J, Heider J, Brutiu BR, Maulide N. Chemoselective Activation of Diethyl Phosphonates: Modular Synthesis of Biologically Relevant Phosphonylated Scaffolds. Angew Chem Int Ed Engl 2018; 57:13330-13334. [PMID: 30067301 PMCID: PMC6175129 DOI: 10.1002/anie.201806343] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2018] [Revised: 07/14/2018] [Indexed: 01/13/2023]
Abstract
Phosphonates have garnered considerable attention for years owing to both their singular biological properties and their synthetic potential. State-of-the-art methods for the preparation of mixed phosphonates, phosphonamidates, phosphonothioates, and phosphinates rely on harsh and poorly selective reaction conditions. We report herein a mild method for the modular preparation of phosphonylated derivatives, several of which exhibit interesting biological activities, that is based on chemoselective activation with triflic anhydride. This procedure enables flexible and even iterative substitution with a broad range of O, S, N, and C nucleophiles.
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Affiliation(s)
- Pauline Adler
- Institute of Organic Chemistry, University of Vienna, Währinger Strasse 38, 1090, Vienna, Austria
| | - Amandine Pons
- Institute of Organic Chemistry, University of Vienna, Währinger Strasse 38, 1090, Vienna, Austria
| | - Jing Li
- Institute of Organic Chemistry, University of Vienna, Währinger Strasse 38, 1090, Vienna, Austria
| | - Jörg Heider
- Institute of Organic Chemistry, University of Vienna, Währinger Strasse 38, 1090, Vienna, Austria
| | - Bogdan R Brutiu
- 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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4
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Adler P, Pons A, Li J, Heider J, Brutiu BR, Maulide N. Chemoselektive Aktivierung von Diethylphosphonaten: modulare Synthese von biologisch relevanten phosphonylierten Grundgerüsten. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201806343] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Pauline Adler
- Institut für Organische ChemieUniversität Wien Währinger Straße 38 1090 Wien Österreich
| | - Amandine Pons
- Institut für Organische ChemieUniversität Wien Währinger Straße 38 1090 Wien Österreich
| | - Jing Li
- Institut für Organische ChemieUniversität Wien Währinger Straße 38 1090 Wien Österreich
| | - Jörg Heider
- Institut für Organische ChemieUniversität Wien Währinger Straße 38 1090 Wien Österreich
| | - Bogdan R. Brutiu
- Institut für Organische ChemieUniversität Wien Währinger Straße 38 1090 Wien Österreich
| | - Nuno Maulide
- Institut für Organische ChemieUniversität Wien Währinger Straße 38 1090 Wien Österreich
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5
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Zabri H, Gillaizeau I, Bignozzi CA, Caramori S, Charlot MF, Cano-Boquera J, Odobel F. Synthesis and Comprehensive Characterizations of New cis-RuL2X2 (X = Cl, CN, and NCS) Sensitizers for Nanocrystalline TiO2 Solar Cell Using Bis-Phosphonated Bipyridine Ligands (L). Inorg Chem 2003; 42:6655-66. [PMID: 14552617 DOI: 10.1021/ic034403m] [Citation(s) in RCA: 81] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The preparation and the properties of several ruthenium complexes of the general formula cis-RuL(2)X(2) with L = 2,2'-bipyridine-4,4'-bisphosphonic acid, L' = 2,2'-bipyridine-5,5'-bisphosphonic acid, and X = Cl, CN, or NCS are reported. The synthesis of these complexes relies on the preparation of the key intermediates cis-Ru(bipyridinebis(diethyl ester phosphonate))Cl(2). The ground-state second pK(a) values of the thiocyanato complexes were determined and are 6.0 and 6.1 for cis-RuL(2)(NCS)(2) and for cis-RuL'(2)(NCS)(2), respectively. For these species, (13)C NMR and IR demonstrate that the thiocyanato ligands are bound to Ru via the N atom. The new complexes exhibit a blue-shifted electronic absorption spectrum with respect to the analogous complexes containing carboxylic acid groups. Density functional theory molecular orbital calculations show that the LUMO of the bipyridine phosphonated ligands is at higher energy than the corresponding dicarboxylate complexes and that the thiocyanato ligands are not simple spectator ligands, whose role is to enrich electron density on the ruthenium, but are also involved in transitions from PiRu-NCS to Pibpy that extend the absorbance of the dye in the low energy part of the absorption spectrum. The photoaction spectra recorded in a sandwich regenerative photovoltaic cell indicate that the cyano and thiocyanato complexes containing the bipyridine substituted in 4,4' positions exhibit a 90-95% photoconversion efficiency on the MLCT band, whereas those containing the bipyridine substituted in 5,5' positions display lower efficiency (60-65%). The most efficient complex in the series is cis-RuL(2)(NCS)(2); however, its overall efficiency is about 30% lower than the analogue cis-Ru(H(2)dcb)(2)(NCS)(2) (H(2)dcb = 2,2'-bipyridine-4,4'-dicarboxylic acid) due to a lower absorbance in the red part of the visible spectrum.
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Affiliation(s)
- Hervé Zabri
- Laboratoire de Synthèse Organique, UMR 6513 CNRS, Faculté des Sciences et des Techniques de Nantes, BP 92208, 2, rue de la Houssinière, 44322 Nantes Cedex 03, France
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