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Wang X, Chen DP, Wang WP, Yang CH, Li M, Xu WB, Wang XC, Quan ZJ. Hydrazone Phosphaketene as a Synthetic Platform To Obtain Three Classes of 1,2,4-Diazaphosphol Derivatives by Switchable Chemoselectivity Strategies. Org Lett 2024; 26:3575-3580. [PMID: 38636450 DOI: 10.1021/acs.orglett.4c00993] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/20/2024]
Abstract
We introduce switchable chemoselectivity strategies based on the hydrazone phosphaketene intermediate to synthesize three classes of 1,2,4-diazaphosphol derivatives. First, the five-membered heterocyclic P and O anion intermediates acted as nucleophilic agents in the selective construction of C-P and C-O bonds. Second, the phosphinidene served as a phosphorus synthon, allowing for the formation of C-P and C-N bonds. Finally, a stepwise mechanism, supported by DFT calculations, was invoked to explain the reaction selectivity.
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Affiliation(s)
- Xin Wang
- Gansu International Scientific and Technological Cooperation Base of Water-Retention Chemical Functional Materials; College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, Gansu 730070, P. R. China
| | - Dong-Ping Chen
- Gansu International Scientific and Technological Cooperation Base of Water-Retention Chemical Functional Materials; College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, Gansu 730070, P. R. China
| | - Wen-Peng Wang
- School of Chemical Engineering, Lanzhou City University, Lanzhou 730070, P. R. China
| | - Chun-Hong Yang
- Gansu International Scientific and Technological Cooperation Base of Water-Retention Chemical Functional Materials; College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, Gansu 730070, P. R. China
| | - Ming Li
- Gansu International Scientific and Technological Cooperation Base of Water-Retention Chemical Functional Materials; College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, Gansu 730070, P. R. China
| | - Wen-Bo Xu
- Gansu International Scientific and Technological Cooperation Base of Water-Retention Chemical Functional Materials; College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, Gansu 730070, P. R. China
| | - Xi-Cun Wang
- Gansu International Scientific and Technological Cooperation Base of Water-Retention Chemical Functional Materials; College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, Gansu 730070, P. R. China
| | - Zheng-Jun Quan
- Gansu International Scientific and Technological Cooperation Base of Water-Retention Chemical Functional Materials; College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, Gansu 730070, P. R. China
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2
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Franz R, Gál D, Bruhn C, Kelemen Z, Pietschnig R. Gradual Coordination and Reversible P-P Bond Activation of a P 3 -Unit with Transition Metal Carbonyls. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024; 11:e2306805. [PMID: 38161225 PMCID: PMC10953586 DOI: 10.1002/advs.202306805] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/19/2023] [Revised: 12/06/2023] [Indexed: 01/03/2024]
Abstract
Coordination of a stereochemically defined P3 -chain to a series of transition metal carbonyls [M(CO)x ]z- (M = Mn (x = 5, z = 1), Fe (x = 4, z = 2) or Co (x = 4, z = 1)) is explored using a [3]ferrocenophane scaffold. A gradual transition from η1 -, η2 - to η3 -coordination is observed where in the η2 -mode the terminal positions of the phosphorus chain are bridged. With an excess of cobalt carbonyl successive P-P bond activation and gradual separation of the central phosphorus atoms from the phosphorus chain has been observed. This process is reversible and with suitable reagents such as methyl lithium, the P3 -unit is regenerated in stereospecific manner. The bonding situation and steps of the gradual P-P bond activation are investigated by DFT calculations as well as experimental methods (e.g., NMR spectroscopy, X-ray crystallography).
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Affiliation(s)
- Roman Franz
- Institute for Chemistry and CINSaTUniversity of KasselHeinrich‐Plett‐Straße 4034132KasselGermany
| | - Dalma Gál
- Department of Inorganic and Analytical ChemistryBudapest University of Technology and EconomicsMűegyetem Rkp 3.Budapest1111Hungary
| | - Clemens Bruhn
- Institute for Chemistry and CINSaTUniversity of KasselHeinrich‐Plett‐Straße 4034132KasselGermany
| | - Zsolt Kelemen
- Department of Inorganic and Analytical ChemistryBudapest University of Technology and EconomicsMűegyetem Rkp 3.Budapest1111Hungary
| | - Rudolf Pietschnig
- Institute for Chemistry and CINSaTUniversity of KasselHeinrich‐Plett‐Straße 4034132KasselGermany
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3
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Schulz J, Sárosi MB, Hey‐Hawkins E. Exploring the Reactivity of B‐Connected Carboranylphosphines in Frustrated Lewis Pair Chemistry: A New Frame for a Classic System. Chemistry 2022; 28:e202200531. [PMID: 35472172 PMCID: PMC9320892 DOI: 10.1002/chem.202200531] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2022] [Indexed: 11/15/2022]
Abstract
The primary phosphines MesPH2 and tBuPH2 react with 9‐iodo‐m‐carborane yielding B9‐connected secondary carboranylphosphines 1,7‐H2C2B10H9‐9‐PHR (R=2,4,6‐Me3C6H2 (Mes; 1
a), tBu (1
b)). Addition of tris(pentafluorophenyl)borane (BCF) to 1
a, b resulted in the zwitterionic compounds 1,7‐H2C2B10H9‐9‐PHR(p‐C6F4)BF(C6F5)2 (2
a, b) through nucleophilic para substitution of a C6F5 ring followed by fluoride transfer to boron. Further reaction with Me2SiHCl prompted a H−F exchange yielding the zwitterionic compounds 1,7‐H2C2B10H9‐9‐PHR(p‐C6F4)BH(C6F5)2 (3
a, b). The reaction of 2
a, b with one equivalent of R'MgBr (R’=Me, Ph) gave the extremely water‐sensitive frustrated Lewis pairs 1,7‐H2C2B10H9‐9‐PR(p‐C6F4)B(C6F5)2 (4
a, b). Hydrolysis of the B−C6F4 bond in 4
a, b gave the first tertiary B‐carboranyl phosphines with three distinct substituents, 1,7‐H2C2B10H9‐9‐PR(p‐C6F4H) (5
a, b). Deprotonation of the zwitterionic compounds 2
a, b and 3
a, b formed anionic phosphines [1,7‐H2C2B10H9‐9‐PR(p‐C6F4)BX(C6F5)2]−[DMSOH]+ (R=Mes, X=F (6
a), R=tBu, X=F (6
b); R=Mes, X=H (7
a), R=tBu, X=H (7
b)). Reaction of 2
a, b with an excess of Grignard reagents resulted in the addition of R’ at the boron atom yielding the anions [1,7‐H2C2B10H9‐9‐PR(p‐C6F4)BR’(C6F5)2]− (R=Mes, R’=Me (8
a), R=tBu, R’=Me (8
b); R=Mes, R’=Ph (9
a), R=tBu, R’=Ph (9
b)) with [MgBr(Et2O)n]+ as counterion. The ability of the zwitterionic compounds 3
a, b to hydrogenate imines as well as the Brønsted acidity of 3
a were investigated.
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Affiliation(s)
- Jan Schulz
- Leipzig University, Faculty of Chemistry and Mineralogy Institute of Inorganic Chemistry Johannisallee 29 04103 Leipzig Germany
| | - Menyhárt B. Sárosi
- Leipzig University, Faculty of Chemistry and Mineralogy Wilhelm-Ostwald-Institute for Physical and Theoretical Chemistry Linnéstraße 2 04103 Leipzig Germany
| | - Evamarie Hey‐Hawkins
- Leipzig University, Faculty of Chemistry and Mineralogy Institute of Inorganic Chemistry Johannisallee 29 04103 Leipzig Germany
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4
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Kang Y, Wang B, Nan R, Li Y, Zhu Z, Xiao XQ. Cyclic Carbonate Synthesis from Epoxides and CO 2 Catalyzed by Aluminum-Salen Complexes Bearing a nido-C 2B 9 Carborane Ligand. Inorg Chem 2022; 61:8806-8814. [PMID: 35653698 DOI: 10.1021/acs.inorgchem.2c00797] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The active and well-designed Schiff base ligands are considered "privileged ligands". The so-called salen ligands, i.e., the tetradentate [O, N, N, O] bis-Schiff base ligands, have also found broad applications in many homogeneous catalytic reactions. Modification of the salen ligands has concentrated on altering the substituents in the phenolate rings and variations in the diamine backbones. Herein, o-carborane-supported salen ligands (2) were designed and prepared. A series of aluminum-salen complexes (3·(sol)2), which were supported by the nido-C2B9 carborane anions, were synthesized. These Al(III) complexes showed high activities (TOF up to 1500 h-1) in catalyzing the cycloaddition of epoxides and CO2 at atmospheric pressure and near room temperature. Complexes 3·(sol)2 are one of the rare examples of Al-based catalysts capable of promoting cycloaddition at 1 bar pressure of CO2. Density functional theory (DFT) studies combined with the catalytic results reveal that the catalytic cycles occur on two axial sites of the Al(III) center.
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Affiliation(s)
- Yanrui Kang
- College of Material, Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education, Hangzhou Normal University. No. 2318 Yuhangtang Rd. Hangzhou, 311121 Zhejiang, China
| | - Beining Wang
- College of Material, Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education, Hangzhou Normal University. No. 2318 Yuhangtang Rd. Hangzhou, 311121 Zhejiang, China
| | - Runxia Nan
- College of Material, Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education, Hangzhou Normal University. No. 2318 Yuhangtang Rd. Hangzhou, 311121 Zhejiang, China
| | - Yiwen Li
- College of Material, Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education, Hangzhou Normal University. No. 2318 Yuhangtang Rd. Hangzhou, 311121 Zhejiang, China
| | - Zhouli Zhu
- College of Material, Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education, Hangzhou Normal University. No. 2318 Yuhangtang Rd. Hangzhou, 311121 Zhejiang, China
| | - Xu-Qiong Xiao
- College of Material, Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education, Hangzhou Normal University. No. 2318 Yuhangtang Rd. Hangzhou, 311121 Zhejiang, China
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5
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Basappa S, Bhawar R, Nagaraju DH, Bose SK. Recent advances in the chemistry of the phosphaethynolate and arsaethynolate anions. Dalton Trans 2022; 51:3778-3806. [PMID: 35108724 DOI: 10.1039/d1dt03994f] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
Over the past decade, the reactivity of 2-phosphaethynolate (OCP-), a heavier analogue of the cyanate anion, has been the subject of momentous interest in the field of modern organometallic chemistry. It is used as a precursor to novel phosphorus-containing heterocycles and as a ligand in decarbonylative processes, serving as a synthetic equivalent of a phosphinidene derivative. This perspective aims to describe advances in the reactivities of phosphaethynolate and arsaethynolate anions (OCE-; E = P, As) with main-group element, transition metal, and f-block metal scaffolds. Further, the unique structures and bonding properties are discussed based on spectroscopic and theoretical studies.
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Affiliation(s)
- Suma Basappa
- Centre for Nano and Material Sciences (CNMS), Jain University, Jain Global Campus, Bangalore-562112, India.
| | - Ramesh Bhawar
- Centre for Nano and Material Sciences (CNMS), Jain University, Jain Global Campus, Bangalore-562112, India.
| | - D H Nagaraju
- Department of Chemistry, School of Applied Sciences, Reva University, Bangalore 560064, India.
| | - Shubhankar Kumar Bose
- Centre for Nano and Material Sciences (CNMS), Jain University, Jain Global Campus, Bangalore-562112, India.
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Coburger P, Leitl J, Scott DJ, Hierlmeier G, Shenderovich IG, Hey-Hawkins E, Wolf R. Synthesis of a carborane-substituted bis(phosphanido) cobaltate(i), ligand substitution, and unusual P 4 fragmentation. Chem Sci 2021; 12:11225-11235. [PMID: 34522320 PMCID: PMC8386647 DOI: 10.1039/d1sc02948g] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2021] [Accepted: 07/07/2021] [Indexed: 01/13/2023] Open
Abstract
Oxidative addition of the P-P single bond of an ortho-carborane-derived 1,2-diphosphetane (1,2-C2(PMes)2B10H10) (Mes = 2,4,6-Me3C6H2) to cobalt(-i) and nickel(0) sources affords the first heteroleptic complexes of a carborane-bridged bis(phosphanido) ligand. The complexes also incorporate labile ligands suitable for further functionalisation. Thus, the cobalt(i) complex [K([18]crown-6)][Co{1,2-(PMes)2C2B10H10}(cod)] (cod = 1,5-cyclooctadiene) bearing a labile cyclooctadiene ligand undergoes facile ligand exchange reactions with isonitriles and tert-butyl phosphaalkyne with retention of the bis(phosphanido) ligand. However, in the reaction with one equivalent of P4, the electron-rich bis(phosphanido) moiety abstracts a single phosphorus atom with formation of a new P3 chain, while the remaining three P atoms derived from P4 form an η3-coordinating cyclo-P3 ligand. In contrast, when the same reaction is performed with two equivalents of the cobalt(i) complex, a dinuclear product is formed which features an unusual P4 chain in its molecular structure.
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Affiliation(s)
- Peter Coburger
- Institute of Inorganic Chemistry, Universität Regensburg 93040 Regensburg Germany
- Institute of Inorganic Chemistry, Universität Leipzig Johannisallee 29 04103 Leipzig Germany https://anorganik.chemie.uni-leipzig.de/anorganik/ak-hey-hawkins/
| | - Julia Leitl
- Institute of Inorganic Chemistry, Universität Regensburg 93040 Regensburg Germany
| | - Daniel J Scott
- Institute of Inorganic Chemistry, Universität Regensburg 93040 Regensburg Germany
| | - Gabriele Hierlmeier
- Institute of Inorganic Chemistry, Universität Regensburg 93040 Regensburg Germany
| | - Ilya G Shenderovich
- Institute of Organic Chemistry, Universität Regensburg 93040 Regensburg Germany
| | - Evamarie Hey-Hawkins
- Institute of Inorganic Chemistry, Universität Leipzig Johannisallee 29 04103 Leipzig Germany https://anorganik.chemie.uni-leipzig.de/anorganik/ak-hey-hawkins/
| | - Robert Wolf
- Institute of Inorganic Chemistry, Universität Regensburg 93040 Regensburg Germany
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Suter R, Wagner M, Querci L, Conti R, Benkő Z, Grützmacher H. 1,3,4-Azadiphospholides as building blocks for scorpionate and bidentate ligands in multinuclear complexes. Dalton Trans 2020; 49:8201-8208. [PMID: 32501468 DOI: 10.1039/d0dt01864c] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Annulated oxy-substituted 1,3,4-azadiphospholides such as the anion in Na[1] are readily accessible phosphorus heterocycles made from the phosphaethynolate anion (OCP)- and 2-chloropyridines. The sodium salt Na[1] reacts with oxophilic element halides such as OPCl3, PhSiCl3, PhBCl2 and CpTiCl3 at room temperature to form exclusively the oxygen bound tris-substituted compounds E(1)3 (with E = OP, PhSi, PhB- or CpTi). Six equivalents of Na[1] with group four metal chlorides MCl4 (M = Ti, Zr, Hf) form cleanly the hexa-substituted dianions (Na2[M(1)6]) which are isolated in excellent yields. The titanium complexes are deeply coloured species due to ligand to metal charge transfer (LMCT) excitations. In all complexes, the phosphorus atoms of the azadiphosphole moieties are able to coordinate to a soft metal center as shown in their reactions with [Mo(CO)3Mes], yielding complexes in which the Mo(CO)3 binds in a fac manner. Functionalization of the oxy group with amino phosphanes allows isolation of tridentate ligands, which have been used as synthons for macrocyclic molybdenum carbonyl complexes.
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Affiliation(s)
- Riccardo Suter
- Department of Chemistry and Applied Biosciences, ETH Zurich, CH-8093 Zurich, Switzerland.
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Yadav R, Simler T, Reichl S, Goswami B, Schoo C, Köppe R, Scheer M, Roesky PW. Highly Selective Substitution and Insertion Reactions of Silylenes in a Metal-Coordinated Polyphosphide. J Am Chem Soc 2019; 142:1190-1195. [DOI: 10.1021/jacs.9b12151] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Ravi Yadav
- Institute of Inorganic Chemistry, Karlsruhe Institute of Technology (KIT), Engesserstraße 15, 76131 Karlsruhe, Germany
| | - Thomas Simler
- Institute of Inorganic Chemistry, Karlsruhe Institute of Technology (KIT), Engesserstraße 15, 76131 Karlsruhe, Germany
| | - Stephan Reichl
- Institute of Inorganic Chemistry, University of Regensburg, 93040 Regensburg, Germany
| | - Bhupendra Goswami
- Institute of Inorganic Chemistry, Karlsruhe Institute of Technology (KIT), Engesserstraße 15, 76131 Karlsruhe, Germany
| | - Christoph Schoo
- Institute of Inorganic Chemistry, Karlsruhe Institute of Technology (KIT), Engesserstraße 15, 76131 Karlsruhe, Germany
| | - Ralf Köppe
- Institute of Inorganic Chemistry, Karlsruhe Institute of Technology (KIT), Engesserstraße 15, 76131 Karlsruhe, Germany
| | - Manfred Scheer
- Institute of Inorganic Chemistry, University of Regensburg, 93040 Regensburg, Germany
| | - Peter W. Roesky
- Institute of Inorganic Chemistry, Karlsruhe Institute of Technology (KIT), Engesserstraße 15, 76131 Karlsruhe, Germany
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