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Chen H, Hu X, Wang W, Gao L, Song Z. Recent Progress in the Synthesis of Silaspiranes. Chemistry 2023:e202302371. [PMID: 37739927 DOI: 10.1002/chem.202302371] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2023] [Revised: 08/31/2023] [Accepted: 09/22/2023] [Indexed: 09/24/2023]
Abstract
Silaspiranes bearing a spiro-silicon center are promising ring frameworks for the synthesis of novel spirocyclic molecules possessing unique properties. Development of efficient methods towards these ring structures has therefore attracted considerable attentions of synthetic chemists. This minireview highlights the representative advances in the field, and is categorized into four parts according to the ring formation strategies: cyclization, annulation, ring expansion and cycloaddition.
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Affiliation(s)
- Hua Chen
- College of Pharmaceutical Science and, Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals, Zhejiang University of Technology, 310014, Hangzhou, P. R. China
| | - Xuejiao Hu
- College of Pharmaceutical Science and, Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals, Zhejiang University of Technology, 310014, Hangzhou, P. R. China
| | - Wanshu Wang
- Key Laboratory of Drug-Targeting and, Drug Delivery System of the Education Ministry, Sichuan Engineering Laboratory for Plant-Sourced Drug and, Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, 610064, Chengdu, P. R. China
- Key Laboratory of Organosilicon Chemistry and, Material Technology of Ministry of Education, Hangzhou Normal University, 311121, Hangzhou, P. R. China
| | - Lu Gao
- Key Laboratory of Drug-Targeting and, Drug Delivery System of the Education Ministry, Sichuan Engineering Laboratory for Plant-Sourced Drug and, Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, 610064, Chengdu, P. R. China
| | - Zhenlei Song
- Key Laboratory of Drug-Targeting and, Drug Delivery System of the Education Ministry, Sichuan Engineering Laboratory for Plant-Sourced Drug and, Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, 610064, Chengdu, P. R. China
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2
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Dembitsky VM. Biological Activity and Structural Diversity of Steroids Containing Aromatic Rings, Phosphate Groups, or Halogen Atoms. Molecules 2023; 28:5549. [PMID: 37513423 PMCID: PMC10384810 DOI: 10.3390/molecules28145549] [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: 06/27/2023] [Revised: 07/10/2023] [Accepted: 07/13/2023] [Indexed: 07/30/2023] Open
Abstract
This review delves into the investigation of the biological activity and structural diversity of steroids and related isoprenoid lipids. The study encompasses various natural compounds, such as steroids with aromatic ring(s), steroid phosphate esters derived from marine invertebrates, and steroids incorporating halogen atoms (I, Br, or Cl). These compounds are either produced by fungi or fungal endophytes or found in extracts of plants, algae, or marine invertebrates. To assess the biological activity of these natural compounds, an extensive examination of referenced literature sources was conducted. The evaluation encompassed in vivo and in vitro studies, as well as the utilization of the QSAR method. Numerous compounds exhibited notable properties such as strong anti-inflammatory, anti-neoplastic, anti-proliferative, anti-hypercholesterolemic, anti-Parkinsonian, diuretic, anti-eczematic, anti-psoriatic, and various other activities. Throughout the review, 3D graphs illustrating the activity of individual steroids are presented alongside images of selected terrestrial or marine organisms. Additionally, the review provides explanations for specific types of biological activity associated with these compounds. The data presented in this review hold scientific interest for academic science as well as practical implications in the fields of pharmacology and practical medicine. The analysis of the biological activity and structural diversity of steroids and related isoprenoid lipids provides valuable insights that can contribute to advancements in both theoretical understanding and applied research.
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Affiliation(s)
- Valery M Dembitsky
- Centre for Applied Research, Innovation and Entrepreneurship, Lethbridge College, 3000 College Drive South, Lethbridge, AB T1K 1L6, Canada
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3
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Sivaramakrishna A, Pete S, Mandar Mhaskar C, Ramann H, Venkata Ramanaiah D, Arbaaz M, Niyaz M, Janardan S, Suman P. Role of hypercoordinated silicon(IV) complexes in activation of carbon–silicon bonds: An overview on utility in synthetic chemistry. Coord Chem Rev 2023. [DOI: 10.1016/j.ccr.2023.215140] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/03/2023]
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4
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Shi A, Sun D, Guan R, Shan W, Qin Z, Wang J, Wei L, Zhou S, Zhang X, Niu X. Metal-Free Carbon Nitride Nanosheet Supported the Pentacoordinated Silicon Intermediates for Photocatalytic Overall Water Splitting. J Phys Chem Lett 2023; 14:1918-1927. [PMID: 36786508 DOI: 10.1021/acs.jpclett.2c03898] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Photocatalytic overall water splitting is a promising approach to overcome the environmental and energy crisis. However, developing effective photocatalysts with well activity, light absorption, and photogenerated carrier lifetime is still a challenge. Herein, combining extensive first-principles and nonadiabatic molecular dynamics calculations, we find that microporous carbon-nitride nanosheets with a pyridinic nitrogen, such as C2N and C6N6, possess the pentacoordinated silicon intermediates' bonding environment. The pentacoordinated silicon as intermediates exhibits good photocatalytic performance for the difficult four-electronic oxygen evolution reaction. The overpotential is only 0.55 V for C2N, which is significantly lower than that of the tetracoordinated silicon intermediates (2.00 V). Simultaneously, the decoration of the silicon group not only widens the absorption range of visible light but also maintains the lifetime of photogenerated carriers on the nanosecond scale, which enhances the application efficiency of solar energy. Our work paves a new route for advancing photocatalytic overall water splitting.
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Affiliation(s)
- Anqi Shi
- State Key Laboratory of Organic Electronics and Information Displays & Institute of Advanced Materials, Nanjing University of Posts & Telecommunications, Nanjing 210023, China
| | - Dazhong Sun
- New Energy Technology Engineering Laboratory of Jiangsu Province & School of Science, Nanjing University of Posts and Telecommunications, Nanjing 210023, China
| | - Ruilin Guan
- New Energy Technology Engineering Laboratory of Jiangsu Province & School of Science, Nanjing University of Posts and Telecommunications, Nanjing 210023, China
| | - Wenchao Shan
- College of Electronic and Optical Engineering & College of Flexible Electronics (Future Technology), Nanjing University of Posts & Telecommunications, Nanjing 210023, China
| | - Ziyang Qin
- New Energy Technology Engineering Laboratory of Jiangsu Province & School of Science, Nanjing University of Posts and Telecommunications, Nanjing 210023, China
| | - Juncheng Wang
- New Energy Technology Engineering Laboratory of Jiangsu Province & School of Science, Nanjing University of Posts and Telecommunications, Nanjing 210023, China
| | - Lujun Wei
- New Energy Technology Engineering Laboratory of Jiangsu Province & School of Science, Nanjing University of Posts and Telecommunications, Nanjing 210023, China
| | - Shuang Zhou
- New Energy Technology Engineering Laboratory of Jiangsu Province & School of Science, Nanjing University of Posts and Telecommunications, Nanjing 210023, China
| | - Xiuyun Zhang
- College of Physics Science and Technology, Yangzhou University, Yangzhou 225002, China
| | - Xianghong Niu
- State Key Laboratory of Organic Electronics and Information Displays & Institute of Advanced Materials, Nanjing University of Posts & Telecommunications, Nanjing 210023, China
- New Energy Technology Engineering Laboratory of Jiangsu Province & School of Science, Nanjing University of Posts and Telecommunications, Nanjing 210023, China
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5
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Li C, Huang H, Sun L, Huang M, Ding H, Bai J, Cao BP, Xiao Q. Three-Component Synthesis of Dioxaphosphorane-Fused Diphosphacycles Exhibiting Unique Dynamic Fluorescence "On/Off" Properties. Angew Chem Int Ed Engl 2023; 62:e202215436. [PMID: 36524991 DOI: 10.1002/anie.202215436] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2022] [Revised: 12/16/2022] [Accepted: 12/16/2022] [Indexed: 12/23/2022]
Abstract
Rigidly planar polycyclic phosphacycles featuring an internal dioxaphosphorane are promising photofunctional materials. However, the lack of efficient synthetic methods resulted in limited structural diversities which significantly hampered extensive study. Herein, we report a straightforward three-component synthesis of novel dioxaphosphorane-fused diphosphacycles with distinctive photophysical properties. Control experiments and theory calculations were performed to account for a plausible reaction mechanism. We also systematically investigated the structure-property relationships of these unprecedented platforms by combining experiments (X-ray analysis, optical and redox properties) and theoretical computations. Based on their unique structure and properties, a novel fluorescent switch for pH sensing was revealed by a dynamic ring-opening/ring-closing process.
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Affiliation(s)
- Chenchen Li
- Key Laboratory of Organic Chemistry in Jiangxi Province, Institute of Organic Chemistry, Jiangxi Science & Technology Normal University, Nanchang, 330013, China
| | - Haiyang Huang
- Key Laboratory of Organic Chemistry in Jiangxi Province, Institute of Organic Chemistry, Jiangxi Science & Technology Normal University, Nanchang, 330013, China
| | - Longgen Sun
- Key Laboratory of Organic Chemistry in Jiangxi Province, Institute of Organic Chemistry, Jiangxi Science & Technology Normal University, Nanchang, 330013, China
| | - Mingqing Huang
- Key Laboratory of Organic Chemistry in Jiangxi Province, Institute of Organic Chemistry, Jiangxi Science & Technology Normal University, Nanchang, 330013, China
| | - Haixin Ding
- Key Laboratory of Organic Chemistry in Jiangxi Province, Institute of Organic Chemistry, Jiangxi Science & Technology Normal University, Nanchang, 330013, China
| | - Jiang Bai
- Key Laboratory of Organic Chemistry in Jiangxi Province, Institute of Organic Chemistry, Jiangxi Science & Technology Normal University, Nanchang, 330013, China
| | - Ban-Peng Cao
- Key Laboratory of Organic Chemistry in Jiangxi Province, Institute of Organic Chemistry, Jiangxi Science & Technology Normal University, Nanchang, 330013, China
| | - Qiang Xiao
- Key Laboratory of Organic Chemistry in Jiangxi Province, Institute of Organic Chemistry, Jiangxi Science & Technology Normal University, Nanchang, 330013, China
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6
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Tiede ER, Heckman MT, Brennessel WW, Kraft BM. Chelation Equilibria and π-Electron Delocalization in Neutral Hypercoordinate Organosilicon Complexes of Pyrithione. Organometallics 2022. [DOI: 10.1021/acs.organomet.2c00342] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Erin R. Tiede
- Department of Chemistry, St. John Fisher University, Rochester, New York 14618, United States
| | - Matthew T. Heckman
- Department of Chemistry, St. John Fisher University, Rochester, New York 14618, United States
| | - William W. Brennessel
- Department of Chemistry, University of Rochester, Rochester, New York 14627, United States
| | - Bradley M. Kraft
- Department of Chemistry, St. John Fisher University, Rochester, New York 14618, United States
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7
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King RP, Dyke JM, Levason W, Reid G. Neutral and Cationic Complexes of Silicon(IV) Halides with Phosphine Ligands. Inorg Chem 2022; 61:16905-16913. [PMID: 36222839 PMCID: PMC9597660 DOI: 10.1021/acs.inorgchem.2c02949] [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] [Indexed: 11/21/2022]
Abstract
![]()
The reaction of SiI4 and PMe3 in n-hexane produced the yellow salt, [SiI3(PMe3)2]I, confirmed from its X-ray structure, containing
a trigonal bipyramidal cation with trans-phosphines.
This contrasts with the six-coordination found in (the known) trans-[SiX4(PMe3)2] (X
= Cl, Br) complexes. The diphosphines o-C6H4(PMe2)2 and Et2P(CH2)2PEt2 form six-coordinate cis-[SiI4(diphosphine)], which were also characterized by
X-ray crystallography, multinuclear NMR, and IR spectroscopy. Reaction
of trans-[SiX4(PMe3)2] (X = Cl, Br) with Na[BArF] (BArF = [B{3,5-(CF3)2C6H3}4]) produced
five-coordinate [SiX3(PMe3)2][BArF], but while Me3SiO3SCF3 also
abstracted chloride from trans-[SiCl4(PMe3)2], the reaction products were six-coordinate
complexes [SiCl3(PMe3)2(OTf)] and
[SiCl2(PMe3)2(OTf)2] with
the triflate coordinated. X-ray crystal structures were obtained for
[SiCl3(PMe3)2][BArF] and
[SiCl2(PMe3)2(OTf)2].
The charge distribution across the silicon species was also examined
by natural bond orbital (NBO) analyses of the computed density functional
theory (DFT) wavefunctions. For the [SiX4(PMe3)2] and [SiX3(PMe3)2]+ complexes, the positive charge on Si decreases and the negative
charge on X decreases going from X = F to X = I. Upon going from [SiX4(PMe3)2] to [SiX3(PMe3)2]+, i.e., removal of X–, there is an increase in positive charge on Si and a decrease in
negative charge on the X centers (except for the case X = F). The
positive charge on P shows a slight decrease. Unusual neutral and monocationic silicon(IV)
iodide complexes
with soft phosphine coordination are formed in hydrocarbon solvents,
while treatment of [SiCl4(PMe3)2]
with NaBArF forms the [SiCl3(PMe3)2]+ cation; the electronic structures of [SiX4(PMe3)2] and [SiX3(PMe3)2]+ (X = F, Cl, Br, I) are probed using
DFT calculations.
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Affiliation(s)
- Rhys P King
- School of Chemistry, University of Southampton, Southampton SO17 1BJ, UK
| | - John M Dyke
- School of Chemistry, University of Southampton, Southampton SO17 1BJ, UK
| | - William Levason
- School of Chemistry, University of Southampton, Southampton SO17 1BJ, UK
| | - Gillian Reid
- School of Chemistry, University of Southampton, Southampton SO17 1BJ, UK
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8
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Friedel-Crafts-Type Acylation and Amidation Reactions in Strong Brønsted Acid: Taming Superelectrophiles. Molecules 2022; 27:molecules27185984. [PMID: 36144714 PMCID: PMC9503166 DOI: 10.3390/molecules27185984] [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: 08/13/2022] [Revised: 09/06/2022] [Accepted: 09/08/2022] [Indexed: 11/30/2022] Open
Abstract
In this review, we discuss Friedel-Crafts-type aromatic amidation and acylation reactions, not exhaustively, but mainly based on our research results. The electrophilic species involved are isocyanate cation and acylium cation, respectively, and both have a common +C=O structure, which can be generated from carboxylic acid functionalities in a strong Brønsted acid. Carbamates substituted with methyl salicylate can be easily ionized to the isocyanate cation upon (di)protonation of the salicylate. Carboxylic acids can be used directly as a source of acylium cations. However, aminocarboxylic acids are inert in acidic media because two positively charged sites, ammonium and acylium cation, will be generated, resulting in energetically unfavorable charge-charge repulsion. Nevertheless, the aromatic acylation of aminocarboxylic acids can be achieved by using tailored phosphoric acid esters as Lewis bases to abrogate the charge-charge repulsion. Both examples tame the superelectrophilic character.
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9
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Millanvois A, Ollivier C, Fensterbank LG. Bis(catecholato)silicates: Synthesis and Structural Data. Eur J Inorg Chem 2022. [DOI: 10.1002/ejic.202101109] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Alexandre Millanvois
- Sorbonne Université Campus Pierre et Marie Curie: Sorbonne Universite Campus Pierre et Marie Curie Institut Parisien de Chimie Moléculaire FRANCE
| | - Cyril Ollivier
- Sorbonne Université Campus Pierre et Marie Curie: Sorbonne Universite Campus Pierre et Marie Curie Institut Parisien de Chimie Moléculaire FRANCE
| | - Louis Gabriel Fensterbank
- Sorbonne Université Campus Pierre et Marie Curie: Sorbonne Universite Campus Pierre et Marie Curie Institut Parisien de Chimie Moleculaire, UMR 7201 4 place Jussieucase 229 75005 Paris FRANCE
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10
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Silicon Complexes Based on SS- and SS-Coordinating Tridentate Ligands. J Organomet Chem 2022. [DOI: 10.1016/j.jorganchem.2021.122153] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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11
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Park T, Son C, Kim T, Lim S. Understanding of Si3N4-H3PO4 reaction chemistry for the control of Si3N4 dissolution kinetics. J IND ENG CHEM 2021. [DOI: 10.1016/j.jiec.2021.07.001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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12
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Roth D, Stirn J, Stephan DW, Greb L. Lewis Superacidic Catecholato Phosphonium Ions: Phosphorus-Ligand Cooperative C-H Bond Activation. J Am Chem Soc 2021; 143:15845-15851. [PMID: 34521202 DOI: 10.1021/jacs.1c07905] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A series of catecholato phosphonium ions, including the first stable bis(catecholato)-substituted derivatives, are isolated and fully characterized. The cations rank among the most potent literature-known Lewis acids on the Gutmann-Beckett and ion affinity scales. In contrast to halogenated or multiply charged phosphorus cations, Lewis superacidity is imparted by structural constraints, as disclosed by energy decomposition analysis. The modular access provides a tunable scaffold while maintaining extreme affinity, demonstrated by the synthesis of a chiral Lewis superacid. The combination of electrophilic phosphorus and basic oxygen substituents leverages new reactivity modes by phosphorus-ligand cooperativity. With this, a phosphorus-mediated C-H bond activation is accomplished.
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Affiliation(s)
- Daniel Roth
- Anorganisch-Chemisches Institut, Ruprecht-Karls-Universität Heidelberg, Im Neuenheimer Feld 270, Heidelberg 69120, Germany
| | - Judith Stirn
- Anorganisch-Chemisches Institut, Ruprecht-Karls-Universität Heidelberg, Im Neuenheimer Feld 270, Heidelberg 69120, Germany.,Department of Chemistry, University of Toronto, 80 St. George Street, Toronto M5S 3H6, Canada
| | - Douglas W Stephan
- Department of Chemistry, University of Toronto, 80 St. George Street, Toronto M5S 3H6, Canada
| | - Lutz Greb
- Anorganisch-Chemisches Institut, Ruprecht-Karls-Universität Heidelberg, Im Neuenheimer Feld 270, Heidelberg 69120, Germany
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Mironov VF, Dimukhametov MN, Ivkova GA, Khayarov KR, Islamov DR, Litvinov IA. The formation of cage phosphoranes and their rearrangements in the reactions of substituted 2-(3-oxo-3-phenyl)ethoxybenzo[d]-1,3,2-dioxaphospholes with perfluorodiacetyl. Chem Commun (Camb) 2021; 57:8516-8519. [PMID: 34352057 DOI: 10.1039/d1cc02941j] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The Kukhtin-Ramirez reaction of 2-(3-oxo-3-phenyl)ethoxy-benzo[d]-1,3,2-dioxaphospholes with perfluorodiacetyl was monitored by NMR methods. To our surprise the initial stage involved a kinetically controlled [4+4]-cycloaddition with the formation of a cage phosphorane containing a 2',5',8',9'-tetraoxa-2λ5-phosphaspiro[benzo[d][1,3,2]dioxaphosphole-2,1'-bicyclo[4.2.1]nonan]-3'-ene (compound 5) scaffold. Intermediate 5 then converts to spirophosphorane-4',5'-bis(trifluoromethyl)-2λ5-spiro[benzo[d] [1,3,2]dioxaphosphole-2-yl-2,2'-[1,3,2] dioxaphosphole (compound 4). Compound 4 further rearranges into a cage phosphorane derivative containing a [2,5]epoxybenzo[d][1,3,6,2]trioxaphosphocine] (compound 3) backbone.
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Affiliation(s)
- Vladimir F Mironov
- A.E.Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center, Russian Academy of Sciences, Arbuzov Str. 8, Kazan 420088, Russia.
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Yeh HH, Hsu MC, Li YH, Hsu YN, Shr FY, Shieh M. Ternary antimony–chalcogen iron carbonyl complexes and their derivatives: Syntheses, structures, reactivities, and low-energy-gap characteristics. J Organomet Chem 2021. [DOI: 10.1016/j.jorganchem.2021.121717] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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15
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Lemière G, Millanvois A, Ollivier C, Fensterbank L. A Parisian Vision of the Chemistry of Hypercoordinated Silicon Derivatives. CHEM REC 2021; 21:1119-1129. [PMID: 33735507 DOI: 10.1002/tcr.202100049] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2021] [Revised: 03/05/2021] [Indexed: 01/08/2023]
Abstract
Less than ten years of acquaintance with hypercoordinated silicon derivatives in our lab is described in this account. Martin's spirosilane derivatives open new opportunities as ligands and as agents for the activation of small molecules and bis-catecholato silicates have proven to be exquisite radical precursors in photoredox conditions for broad synthetic applications.
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Affiliation(s)
- Gilles Lemière
- Institut Parisien de Chimie Moléculaire, Sorbonne Université, CNRS, 4 place Jussieu, 75005, Paris
| | - Alexandre Millanvois
- Institut Parisien de Chimie Moléculaire, Sorbonne Université, CNRS, 4 place Jussieu, 75005, Paris
| | - Cyril Ollivier
- Institut Parisien de Chimie Moléculaire, Sorbonne Université, CNRS, 4 place Jussieu, 75005, Paris
| | - Louis Fensterbank
- Institut Parisien de Chimie Moléculaire, Sorbonne Université, CNRS, 4 place Jussieu, 75005, Paris
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16
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Asok N, Gaffen JR, Pradhan E, Zeng T, Baumgartner T. Structure-reactivity studies on hypervalent square-pyramidal dithieno[3,2-b:2',3'-d]phospholes. Dalton Trans 2021; 50:2243-2252. [PMID: 33503083 DOI: 10.1039/d1dt00062d] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A series of neutral pentacoordinate dithieno[3,2-b:2',3'-d]phosphole compounds were synthesized by [4 + 1] cycloaddition with o-quinones. Counter to the expected trigonal bipyramidal geometry, the luminescent hypervalent dithienophospholes exhibit square pyramidal geometry with inherently Lewis acidic phosphorus center that is stabilized via supramolecular π-stacking interactions in the solid state and in solution. Due to their Lewis-acid character, the compounds react with nucleophiles, suggesting their potential as mediator in organic transformations. The new species thus present an intriguing structural plaform for the design of neutral P(v) Lewis acids with useful reactivities.
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Affiliation(s)
- Nayanthara Asok
- Department of Chemistry, York University, 4700 Keele Street, Toronto, ON M3J 1P3, Canada.
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17
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Lazareva NF, Sterkhova IV, Vashchenko AV. N-[difluoro(methyl)silyl]carboxamides: Synthesis, structural features and theoretical estimating of Si←O dative bond energy. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2020.129130] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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18
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19
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Smirnov VO, Volodin AD, Korlyukov AA, Dilman AD. All-carbon phosphoranes via difluorocarbene trapping. Chem Commun (Camb) 2021; 57:4823-4826. [DOI: 10.1039/d1cc01075a] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A reaction of intramolecularly disposed phosphonium and phenoxide (or thiophenoxide) fragments with difluorocarbene affording all-carbon λ5-phosphoranes is described.
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Affiliation(s)
- Vladimir O. Smirnov
- N. D. Zelinsky Institute of Organic Chemistry
- Leninsky prosp. 47
- Moscow 119991
- Russian Federation
| | - Alexander D. Volodin
- A. N. Nesmeyanov Institute of Organoelement Compounds
- Vavilov str. 28
- Moscow 119991
- Russian Federation
| | - Alexander A. Korlyukov
- A. N. Nesmeyanov Institute of Organoelement Compounds
- Vavilov str. 28
- Moscow 119991
- Russian Federation
| | - Alexander D. Dilman
- N. D. Zelinsky Institute of Organic Chemistry
- Leninsky prosp. 47
- Moscow 119991
- Russian Federation
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O'Brien NJ, Koda Y, Maeda H, Kano N. Synthesis, structure and properties of a boron-substituted phosphorane bearing N,O-bidentate ligands. Polyhedron 2020. [DOI: 10.1016/j.poly.2020.114841] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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21
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Kowalke J, Wagler J, Viehweger C, Brendler E, Kroke E. Ionic Dissociation of SiCl 4 : Formation of [SiL 6 ]Cl 4 with L=Dimethylphosphinic Acid. Chemistry 2020; 26:8003-8006. [PMID: 32511798 PMCID: PMC7383495 DOI: 10.1002/chem.202000435] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2020] [Revised: 03/01/2020] [Indexed: 11/12/2022]
Abstract
Reactions of SiCl4 with R2PO(OH) (R=Me, Cl) yield compounds with six‐fold coordinated silicon atoms. Whereas R=Me afforded the hexacoordinated tetra‐cationic silicon complex [Si(Me2PO(OH))6]4+ with chloride counter‐ions, R=Cl caused release of HCl with formation of a cyclic dimeric silicon complex [Si(Cl2PO(OH))(Cl2PO2)3(μ‐Cl2PO2)]2 with bridging bidentate dichlorophosphates.
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Affiliation(s)
- Janine Kowalke
- Technische Universität Bergakademie Freiberg, Department of Chemistry and Physics, Institute of Inorganic Chemistry, Leipziger Straße 29, 09599, Freiberg, Germany
| | - Jörg Wagler
- Technische Universität Bergakademie Freiberg, Department of Chemistry and Physics, Institute of Inorganic Chemistry, Leipziger Straße 29, 09599, Freiberg, Germany
| | - Christine Viehweger
- Technische Universität Bergakademie Freiberg, Department of Chemistry and Physics, Institute of Analytical Chemistry, Leipziger Straße 29, 09599, Freiberg, Germany
| | - Erica Brendler
- Technische Universität Bergakademie Freiberg, Department of Chemistry and Physics, Institute of Analytical Chemistry, Leipziger Straße 29, 09599, Freiberg, Germany
| | - Edwin Kroke
- Technische Universität Bergakademie Freiberg, Department of Chemistry and Physics, Institute of Inorganic Chemistry, Leipziger Straße 29, 09599, Freiberg, Germany
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22
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O'Brien NJ, Kano N, Havare N, Uematsu R, Ramozzi R, Morokuma K. Synthesis, Structure and Reactivities of Pentacoordinated Phosphorus–Boron Bonded Compounds. Eur J Inorg Chem 2020. [DOI: 10.1002/ejic.202000229] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Nathan J. O'Brien
- Department of Chemistry Graduate School of Science The University of Tokyo 7‐3‐1 Hongo, Bunkyo‐ku 113‐0033 Tokyo Japan
| | - Naokazu Kano
- Department of Chemistry Graduate School of Science The University of Tokyo 7‐3‐1 Hongo, Bunkyo‐ku 113‐0033 Tokyo Japan
| | - Nizam Havare
- Department of Chemistry Graduate School of Science The University of Tokyo 7‐3‐1 Hongo, Bunkyo‐ku 113‐0033 Tokyo Japan
| | - Ryohei Uematsu
- Fukui Institute for Fundamental Chemistry Kyoto University Takano‐Nishihiraki‐cho 34‐4, Sakyou‐ku 606‐8103 Kyoto Japan
| | - Romain Ramozzi
- Fukui Institute for Fundamental Chemistry Kyoto University Takano‐Nishihiraki‐cho 34‐4, Sakyou‐ku 606‐8103 Kyoto Japan
| | - Keiji Morokuma
- Fukui Institute for Fundamental Chemistry Kyoto University Takano‐Nishihiraki‐cho 34‐4, Sakyou‐ku 606‐8103 Kyoto Japan
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23
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Szűcs R, Fekete C, Bombicz P, Rohonczy J, Kovács I, Nyulászi L. Selectively Tunable Domino Reaction of 1,3‐Diphenylpropane‐1,3‐dione on the Ethoxy‐Silicon Core. Eur J Inorg Chem 2020. [DOI: 10.1002/ejic.201901299] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Rózsa Szűcs
- Department of Inorganic and Analytical Chemistry Budapest University of Technology and Economics Szt. Gellért tér 4 1111 Budapest Hungary
- MTA‐BME Computation Driven Chemistry Research Group Szt. Gellért tér 4 1111 Budapest Hungary
| | - Csaba Fekete
- Department of Inorganic and Analytical Chemistry Budapest University of Technology and Economics Szt. Gellért tér 4 1111 Budapest Hungary
- MTA‐BME Computation Driven Chemistry Research Group Szt. Gellért tér 4 1111 Budapest Hungary
| | - Petra Bombicz
- Chemical Crystallography Research Laboratory Research Centre for Natural Sciences Magyar Tudósok körútja 2 1117 Budapest Hungary
| | - János Rohonczy
- Department of Inorganic Chemistry Institute of Chemistry Eötvös Loránd University Pázmány Péter sétány 1/A 1117 Budapest Hungary
| | - Ilona Kovács
- Department of Inorganic and Analytical Chemistry Budapest University of Technology and Economics Szt. Gellért tér 4 1111 Budapest Hungary
| | - László Nyulászi
- Department of Inorganic and Analytical Chemistry Budapest University of Technology and Economics Szt. Gellért tér 4 1111 Budapest Hungary
- MTA‐BME Computation Driven Chemistry Research Group Szt. Gellért tér 4 1111 Budapest Hungary
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24
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Saptal VB, Wang R, Park S. Recent advances in transition metal-free catalytic hydroelementation (E = B, Si, Ge, and Sn) of alkynes. RSC Adv 2020; 10:43539-43565. [PMID: 35519696 PMCID: PMC9058465 DOI: 10.1039/d0ra07768b] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2020] [Accepted: 11/15/2020] [Indexed: 12/21/2022] Open
Abstract
This review describes the recent advances in the transition metal-free hydroelementation of alkynes with various metalloid hydrides.
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Affiliation(s)
- Vitthal B. Saptal
- Department of Chemistry
- Guangdong Technion Israel Institute of Technology
- China
| | - Ruibin Wang
- Department of Chemistry
- Guangdong Technion Israel Institute of Technology
- China
| | - Sehoon Park
- Department of Chemistry
- Guangdong Technion Israel Institute of Technology
- China
- Technion-Israel Institute of Technology
- 32000 Haifa
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25
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Levernier E, Lévêque C, Derat E, Fensterbank L, Ollivier C. Towards Visible‐Light Photocatalytic Reduction of Hypercoordinated Silicon Species. Helv Chim Acta 2019. [DOI: 10.1002/hlca.201900238] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Etienne Levernier
- Sorbonne UniversitéCNRSInstitut Parisien de Chimie Moléculaire 4 Place Jussieu, CC 229 FR-75252 Paris Cedex 05 France
| | - Christophe Lévêque
- Sorbonne UniversitéCNRSInstitut Parisien de Chimie Moléculaire 4 Place Jussieu, CC 229 FR-75252 Paris Cedex 05 France
| | - Etienne Derat
- Sorbonne UniversitéCNRSInstitut Parisien de Chimie Moléculaire 4 Place Jussieu, CC 229 FR-75252 Paris Cedex 05 France
| | - Louis Fensterbank
- Sorbonne UniversitéCNRSInstitut Parisien de Chimie Moléculaire 4 Place Jussieu, CC 229 FR-75252 Paris Cedex 05 France
| | - Cyril Ollivier
- Sorbonne UniversitéCNRSInstitut Parisien de Chimie Moléculaire 4 Place Jussieu, CC 229 FR-75252 Paris Cedex 05 France
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26
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Hypercoordinated organotin(IV) compounds containing C,O- and C,N- chelating ligands: Synthesis, characterisation, DFT studies and polymerization behaviour. J Organomet Chem 2019. [DOI: 10.1016/j.jorganchem.2019.120910] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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27
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Skrypai V, Varjosaari SE, Azam F, Gilbert TM, Adler MJ. Chiral Brønsted Acid-Catalyzed Metal-Free Asymmetric Direct Reductive Amination Using 1-Hydrosilatrane. J Org Chem 2019; 84:5021-5026. [PMID: 30973732 DOI: 10.1021/acs.joc.8b03073] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
The asymmetric direct reductive amination of prochiral ketones with aryl amines using 1-hydrosilatrane with a chiral Brønsted acid catalyst is reported. This is the first known example of chiral Brønsted acid-catalyzed asymmetric reductive amination using a silane as the hydride source. The reaction features a highly practical reducing reagent and proceeds efficiently at room temperature without a specialized reaction setup or equipment to exclude air or moisture. This method provides high conversion and enantiomeric excess up to 84% of the desired chiral secondary amines with minimal side products.
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Affiliation(s)
- Vladislav Skrypai
- Department of Chemistry & Biochemistry , Northern Illinois University , 1425 W. Lincoln Hwy. , DeKalb , Illinois 60115 , United States
| | - Sami E Varjosaari
- Department of Chemistry & Biochemistry , Northern Illinois University , 1425 W. Lincoln Hwy. , DeKalb , Illinois 60115 , United States.,Department of Science & Mathematics , Coker College , 300 E. College Ave. , Hartsville , South Carolina 29550 , United States
| | - Fawwaz Azam
- Department of Chemistry & Biology , Ryerson University , 350 Victoria St. , Toronto , Ontario M5B 2K3 , Canada
| | - Thomas M Gilbert
- Department of Chemistry & Biochemistry , Northern Illinois University , 1425 W. Lincoln Hwy. , DeKalb , Illinois 60115 , United States
| | - Marc J Adler
- Department of Chemistry & Biochemistry , Northern Illinois University , 1425 W. Lincoln Hwy. , DeKalb , Illinois 60115 , United States.,Department of Chemistry & Biology , Ryerson University , 350 Victoria St. , Toronto , Ontario M5B 2K3 , Canada
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28
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Baramov T, Schmid B, Ryu H, Jeong J, Keijzer K, von Eckardstein L, Baik MH, Süssmuth RD. How Many O-Donor Groups in Enterobactin Does It Take to Bind a Metal Cation? Chemistry 2019; 25:6955-6962. [PMID: 30816591 DOI: 10.1002/chem.201900453] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2019] [Indexed: 12/16/2022]
Abstract
The E. coli siderophore enterobactin, the strongest FeIII chelator known to date, forms hexacoordinate complexes with SiIV , GeIV , and TiIV . Synthetic protocols have been developed to prepare non-symmetric enterobactin analogues with varying denticities. Various benzoic acid residues were coupled to the macrocyclic lactone to afford a diverse library of ligands. These enterobactin analogues were bound to SiIV , GeIV , and TiIV , and the complexes were investigated through experimental and computational techniques. The binding behavior of the synthesized chelators enabled assessment of the contribution of each of the phenolic hydroxy groups in enterobactin to metal-ion complexation. It was found that at least four O-donors are needed for enterobactin derivatives to act as metal binders. Density functional theory calculations indicate that the strong binding behavior of enterobactin can be ascribed to a diminished translational entropy penalty, a common feature of the chelate effect, coupled with the structural arrangement of the three catechol moieties, which allows the triseryl base to be installed without distorting the preferred local metal-binding geometry of the catecholate ligands.
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Affiliation(s)
- Todor Baramov
- Institut für Chemie, Technische Universität Berlin, Fakultät II, Strasse des 17. Juni 124, 10623, Berlin, Germany
| | - Bianca Schmid
- Institut für Chemie, Technische Universität Berlin, Fakultät II, Strasse des 17. Juni 124, 10623, Berlin, Germany
| | - Ho Ryu
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 34141, Korea.,Center for Catalytic Hydrocarbon Functionalizations, Institute for Basic Science (IBS), Daejeon, 34141, Korea
| | - Jinhoon Jeong
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 34141, Korea.,Center for Catalytic Hydrocarbon Functionalizations, Institute for Basic Science (IBS), Daejeon, 34141, Korea
| | - Karlijn Keijzer
- Institut für Chemie, Technische Universität Berlin, Fakultät II, Strasse des 17. Juni 124, 10623, Berlin, Germany
| | - Leonard von Eckardstein
- Institut für Chemie, Technische Universität Berlin, Fakultät II, Strasse des 17. Juni 124, 10623, Berlin, Germany
| | - Mu-Hyun Baik
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 34141, Korea.,Center for Catalytic Hydrocarbon Functionalizations, Institute for Basic Science (IBS), Daejeon, 34141, Korea
| | - Roderich D Süssmuth
- Institut für Chemie, Technische Universität Berlin, Fakultät II, Strasse des 17. Juni 124, 10623, Berlin, Germany
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29
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Li W, Kundu S, Köhler C, Li J, Dutta S, Yang Z, Stalke D, Herbst-Irmer R, Stückl AC, Schwederski B, Koley D, Kaim W, Roesky HW. Cyclic Alkyl(amino) Carbene-Stabilized Monoradicals of Organosilicon(IV) Compounds with Small Substituents. Organometallics 2019. [DOI: 10.1021/acs.organomet.9b00041] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- Wenling Li
- School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 102488, P. R. China
- Institut für Anorganische Chemie, Georg-August-Universität Göttingen, Tammannstrasse 4, D-37077 Göttingen, Germany
| | - Subrata Kundu
- Institut für Anorganische Chemie, Georg-August-Universität Göttingen, Tammannstrasse 4, D-37077 Göttingen, Germany
| | - Christian Köhler
- Institut für Anorganische Chemie, Georg-August-Universität Göttingen, Tammannstrasse 4, D-37077 Göttingen, Germany
| | - Jiancheng Li
- Institut für Anorganische Chemie, Georg-August-Universität Göttingen, Tammannstrasse 4, D-37077 Göttingen, Germany
| | - Sayan Dutta
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Kolkata, Mohanpur 741 246, India
| | - Zhi Yang
- School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 102488, P. R. China
| | - Dietmar Stalke
- Institut für Anorganische Chemie, Georg-August-Universität Göttingen, Tammannstrasse 4, D-37077 Göttingen, Germany
| | - Regine Herbst-Irmer
- Institut für Anorganische Chemie, Georg-August-Universität Göttingen, Tammannstrasse 4, D-37077 Göttingen, Germany
| | - A. Claudia Stückl
- Institut für Anorganische Chemie, Georg-August-Universität Göttingen, Tammannstrasse 4, D-37077 Göttingen, Germany
| | - Brigitte Schwederski
- Institut für Anorganische Chemie, Universität Stuttgart, 70569 Stuttgart, Germany
| | - Debasis Koley
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Kolkata, Mohanpur 741 246, India
| | - Wolfgang Kaim
- Institut für Anorganische Chemie, Universität Stuttgart, 70569 Stuttgart, Germany
| | - Herbert W. Roesky
- Institut für Anorganische Chemie, Georg-August-Universität Göttingen, Tammannstrasse 4, D-37077 Göttingen, Germany
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30
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Mörsdorf JM, Wadepohl H, Ballmann J. A Tautomeric λ 3/λ 5-Phosphane Pair and Its Ambiphilic Reactivity. Inorg Chem 2019; 58:3502-3508. [PMID: 30777436 DOI: 10.1021/acs.inorgchem.9b00076] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The central phosphorus atom of a novel hydroxyl-functionalized triarylphosphane was shown to reversibly insert into one of the molecule's O-H bonds, which forms the basis for a tautomeric λ3/λ5-phosphane equilibrium. For the first time, this equilibrium was detected for a λ3-triarylphosphane and the underlying dynamic process was elucidated by NMR spectroscopy. On the basis of reactivity studies, a nucleophilic character was assigned to the minor species present in solution, the λ3-phosphane. Upon methylation, for example, the λ3-form was selectively removed from the equilibrium and converted to the corresponding phosphonium salt. However, upon generation of an alkoxide via proton abstraction, the electrophilic character of the λ5-phosphane in the equilibrium became evident since the alkoxide was found to attack the molecule's phosphorus atom. This intramolecular reaction led to the selective formation of a new anionic λ6-hydridospirophosphane.
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Affiliation(s)
- Jean-Marc Mörsdorf
- Anorganisch-Chemisches Institut , Ruprecht-Karls-Universität Heidelberg , Im Neuenheimer Feld 276 , 69120 Heidelberg , Germany
| | - Hubert Wadepohl
- Anorganisch-Chemisches Institut , Ruprecht-Karls-Universität Heidelberg , Im Neuenheimer Feld 276 , 69120 Heidelberg , Germany
| | - Joachim Ballmann
- Anorganisch-Chemisches Institut , Ruprecht-Karls-Universität Heidelberg , Im Neuenheimer Feld 276 , 69120 Heidelberg , Germany
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31
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Hu B, Jiang YY, Liu P, Zhang RX, Zhang Q, Liu TT, Bi S. The mechanism and structure–activity relationship of amide bond formation by silane derivatives: a computational study. Org Biomol Chem 2019; 17:9232-9242. [DOI: 10.1039/c9ob01605h] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
The detailed reaction mechanism and structure–activity relationship of substrates in silane reagent-mediated amide bond formation reactions are clarified.
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Affiliation(s)
- Ben Hu
- School of Chemistry and Chemical Engineering
- Qufu Normal University
- Qufu 273165
- People's Republic of China
| | - Yuan-Ye Jiang
- School of Chemistry and Chemical Engineering
- Qufu Normal University
- Qufu 273165
- People's Republic of China
| | - Peng Liu
- School of Chemistry and Chemical Engineering
- Qufu Normal University
- Qufu 273165
- People's Republic of China
| | - Rui-Xue Zhang
- School of Chemistry and Chemical Engineering
- Qufu Normal University
- Qufu 273165
- People's Republic of China
| | - Qi Zhang
- Institute of Industry & Equipment Technology
- Hefei University of Technology
- Hefei 230009
- People's Republic of China
| | - Tian-Tian Liu
- School of Chemistry and Chemical Engineering
- Qufu Normal University
- Qufu 273165
- People's Republic of China
| | - Siwei Bi
- School of Chemistry and Chemical Engineering
- Qufu Normal University
- Qufu 273165
- People's Republic of China
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32
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Pau J, D'Amaral GM, Lough AJ, Wylie RS, Foucher DA. Synthesis and Characterization of Readily Modified Poly(aryl)(alkoxy)stannanes by use of Hypercoordinated Sn Monomers. Chemistry 2018; 24:18762-18771. [DOI: 10.1002/chem.201804145] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2018] [Indexed: 11/08/2022]
Affiliation(s)
- Jeffrey Pau
- Advanced Materials Laboratory, Department of Chemistry and BiologyRyerson University 350 Victoria Street Toronto ON M5B 2K3 Canada
| | - Gloria M. D'Amaral
- Advanced Materials Laboratory, Department of Chemistry and BiologyRyerson University 350 Victoria Street Toronto ON M5B 2K3 Canada
| | - Alan J. Lough
- X-Ray Laboratory, Department of ChemistryUniversity of Toronto Toronto ON M5H 3H6 Canada
| | - R. Stephen Wylie
- Advanced Materials Laboratory, Department of Chemistry and BiologyRyerson University 350 Victoria Street Toronto ON M5B 2K3 Canada
| | - Daniel A. Foucher
- Advanced Materials Laboratory, Department of Chemistry and BiologyRyerson University 350 Victoria Street Toronto ON M5B 2K3 Canada
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33
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Zhan C, Han Z, Patrick BO, Gates DP. 2-Aminophenolate ligands for phosphorus(v): a lithium salt featuring the chiral [P(OC 6H 4NR) 3] - anion. Dalton Trans 2018; 47:12118-12129. [PMID: 30065977 DOI: 10.1039/c8dt02522c] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Phosphoranes P(OC6H4NR)2(OC6H4NHR) [R = Me (2a), Ph (2b), C6F5 (2c)] were synthesized by treating PCl5 with the respective 2-aminophenol derivative (1a-c, 3.1 equiv.). In one instance, an intermediate species, P(OC6H4NR)2Cl [R = Me (3a)], was isolated and structurally characterized. Deprotonation of the amine moieties (-NH[combining low line]R) in phosphoranes 2a and 2b with a strong alkali-metal base (e.g. n-BuLi) in the presence of a strong-donor solvent (e.g. THF) afforded salts composed of the hexacoordinate P(v)-anions [P(OC6H4NR)3]- (R = Me, [4a]-; Ph, [4b]-). Employing precursor 2a, the salt Li(THF)3fac-[4a]- was isolated. The X-ray crystal of each enantiomer of [4a]- was determined and, to our knowledge, represents the first structurally characterized example of a salt containing a hexacoordinate P(v)N3O3 anion featuring P(v)-N bonds.
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Affiliation(s)
- Chuantian Zhan
- Department of Chemistry, University of British Columbia, 2036 Main Mall, Vancouver, British Columbia, CanadaV6T 1Z1.
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34
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Aghazadeh Meshgi M, Zaitsev KV, Vener MV, Churakov AV, Baumgartner J, Marschner C. Hypercoordinated Oligosilanes Based on Aminotrisphenols. ACS OMEGA 2018; 3:10317-10330. [PMID: 30198007 PMCID: PMC6120741 DOI: 10.1021/acsomega.8b01402] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/20/2018] [Accepted: 08/17/2018] [Indexed: 05/05/2023]
Abstract
The hypercoordinated silicon chlorides ClSi[(o-OC6H4)3N] (3) and ClSi[(OC6H2Me2CH2)3N] (5) were used for the synthesis of catenated derivatives (Me3Si)3SiSi[(o-OC6H4)3N] (9), (Me3Si)3SiSiMe2SiMe2Si(SiMe3)2Si[(o-OC6H4)3N] (11), and (Me3Si)3SiSi[(OC6H2Me2CH2)3N] (13) in reactions with (Me3Si)3SiK·THF (7) or (Me3Si)3SiK·[18-crown-6] (8). It was found that the nature of the (Me3Si)3SiK solvate determines the product of interaction, resulting in the formation of (Me3Si)3Si(CH2)4OSi[(OC6H2Me2CH2)3N] (12) or 13. Compounds obtained were characterized using multinuclear NMR and UV-vis spectroscopy and mass spectrometry. The molecular structures of 3, 9, and 11-13 were investigated by single-crystal X-ray analysis, featuring hypercoordinated Si atoms in a trigonal-bipyramidal coordination environment with O atoms in the equatorial plane. The structure of the side product [N(CH2C6H2Me2O)3Si]2O (6) was also studied, indicating highly tetrahedrally distorted trigonal-bipyramidal environment at the Si atoms, which was confirmed by crystal density functional theory calculations indicating the very weak Si ← N interaction. The Si···N interatomic distances span a broad range (2.23-2.78 Å). The dependence of structural and NMR parameters for hypercoordinated catenated compounds from the type of the ligand was established.
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Affiliation(s)
- Mohammad Aghazadeh Meshgi
- Institute
of Inorganic Chemistry, Graz University
of Technology, Stremayrgasse 9, 8010 Graz, Austria
| | - Kirill V. Zaitsev
- Department
of Chemistry, Moscow State University, Leninskye Gory 1, Moscow 119991, Russia
- E-mail: (K.V.Z.)
| | - Mikhail V. Vener
- Department
of Quantum Chemistry, Mendeleev University
of Chemical Technology, Miusskaya Square 9, 125047 Moscow, Russia
| | - Andrei V. Churakov
- N.S.
Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Leninskii pr., 31, 119991 Moscow, Russia
| | - Judith Baumgartner
- Institute
of Inorganic Chemistry, Graz University
of Technology, Stremayrgasse 9, 8010 Graz, Austria
| | - Christoph Marschner
- Institute
of Inorganic Chemistry, Graz University
of Technology, Stremayrgasse 9, 8010 Graz, Austria
- E-mail: (C.M.)
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35
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Steroid phosphate esters and phosphonosteroids and their biological activities. Appl Microbiol Biotechnol 2018; 102:7679-7692. [PMID: 29998410 DOI: 10.1007/s00253-018-9206-z] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2018] [Revised: 06/27/2018] [Accepted: 06/27/2018] [Indexed: 10/28/2022]
Abstract
Steroid phosphate esters are very rare natural lipids that have been comparatively recently isolated from fractions of polar lipids of marine sponges and starfish. These steroids exhibit interesting biological activities. When using the PASS computer program, we showed that many of steroid phosphate esters showed antifungal, antihypercholesterolemic, anesthetic, and other activities with a confidence of 73 to 93%. In addition, some of them can be used as inhibitors of cholesterol synthesis and show hepatoprotection properties. Phosphonosteroids demonstrate antineoplastic and antihypercholesterolemic activities with a certainty of 85 to 90%. And also, they can be used as ovulation inhibitors or female steroid contraceptives with confidence from 86 to 98%.
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36
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Hamlin TA, Swart M, Bickelhaupt FM. Nucleophilic Substitution (S N 2): Dependence on Nucleophile, Leaving Group, Central Atom, Substituents, and Solvent. Chemphyschem 2018; 19:1315-1330. [PMID: 29542853 PMCID: PMC6001448 DOI: 10.1002/cphc.201701363] [Citation(s) in RCA: 118] [Impact Index Per Article: 19.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2017] [Indexed: 11/12/2022]
Abstract
The reaction potential energy surface (PES), and thus the mechanism of bimolecular nucleophilic substitution (SN 2), depends profoundly on the nature of the nucleophile and leaving group, but also on the central, electrophilic atom, its substituents, as well as on the medium in which the reaction takes place. Here, we provide an overview of recent studies and demonstrate how changes in any one of the aforementioned factors affect the SN 2 mechanism. One of the most striking effects is the transition from a double-well to a single-well PES when the central atom is changed from a second-period (e. g. carbon) to a higher-period element (e.g, silicon, germanium). Variations in nucleophilicity, leaving group ability, and bulky substituents around a second-row element central atom can then be exploited to change the single-well PES back into a double-well. Reversely, these variations can also be used to produce a single-well PES for second-period elements, for example, a stable pentavalent carbon species.
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Affiliation(s)
- Trevor A. Hamlin
- Department of Theoretical Chemistry andAmsterdam Center for Multiscale Modeling (ACMM)Vrije Universiteit AmsterdamDe Boelelaan 10831081 HVAmsterdamThe Netherlands
| | - Marcel Swart
- Department of Theoretical Chemistry andAmsterdam Center for Multiscale Modeling (ACMM)Vrije Universiteit AmsterdamDe Boelelaan 10831081 HVAmsterdamThe Netherlands
- Institut de Química Computacional I Catàlisi and Department de QuímicaUniversitat de Girona17003GironaSpain
- ICREAPg. Lluís Companys 2308010BarcelonaSpain
| | - F. Matthias Bickelhaupt
- Department of Theoretical Chemistry andAmsterdam Center for Multiscale Modeling (ACMM)Vrije Universiteit AmsterdamDe Boelelaan 10831081 HVAmsterdamThe Netherlands
- Institute of Molecules and Materials (IMM)Radboud UniversityHeyendaalseweg 1356525 AJNijmegenThe Netherlands
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37
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Hamlin TA, van Beek B, Wolters LP, Bickelhaupt FM. Nucleophilic Substitution in Solution: Activation Strain Analysis of Weak and Strong Solvent Effects. Chemistry 2018; 24:5927-5938. [PMID: 29457865 PMCID: PMC5947303 DOI: 10.1002/chem.201706075] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2017] [Indexed: 12/23/2022]
Abstract
We have quantum chemically studied the effect of various polar and apolar solvents on the shape of the potential energy surface (PES) of a diverse collection of archetypal nucleophilic substitution reactions at carbon, silicon, phosphorus, and arsenic by using density functional theory at the OLYP/TZ2P level. In the gas phase, all our model SN 2 reactions have single-well PESs, except for the nucleophilic substitution reaction at carbon (SN 2@C), which has a double-well energy profile. The presence of the solvent can have a significant effect on the shape of the PES and, thus, on the nature of the SN 2 process. Solvation energies, charges on the nucleophile or leaving group, and structural features are compared for the various SN 2 reactions in a spectrum of solvents. We demonstrate how solvation can change the shape of the PES, depending not only on the polarity of the solvent, but also on how the charge is distributed over the interacting molecular moieties during different stages of the reaction. In the case of a nucleophilic substitution at three-coordinate phosphorus, the reaction can be made to proceed through a single-well [no transition state (TS)], bimodal barrier (two TSs), and then through a unimodal transition state (one TS) simply by increasing the polarity of the solvent.
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Affiliation(s)
- Trevor A. Hamlin
- Department of Theoretical ChemistryAmsterdam Center for Multiscale Modeling (ACMM)Vrije Universiteit AmsterdamDe Boelelaan 10831081 HVAmsterdamThe Netherlands
| | - Bas van Beek
- Department of Theoretical ChemistryAmsterdam Center for Multiscale Modeling (ACMM)Vrije Universiteit AmsterdamDe Boelelaan 10831081 HVAmsterdamThe Netherlands
| | - Lando P. Wolters
- Department of Theoretical ChemistryAmsterdam Center for Multiscale Modeling (ACMM)Vrije Universiteit AmsterdamDe Boelelaan 10831081 HVAmsterdamThe Netherlands
| | - F. Matthias Bickelhaupt
- Department of Theoretical ChemistryAmsterdam Center for Multiscale Modeling (ACMM)Vrije Universiteit AmsterdamDe Boelelaan 10831081 HVAmsterdamThe Netherlands
- Institute of Molecules and Materials (IMM)Radboud University NijmegenHeyendaalseweg 1356525 AJNijmegenThe Netherlands
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38
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Rodriguez R, Alvarado-Beltran I, Saouli J, Saffon-Merceron N, Baceiredo A, Branchadell V, Kato T. Reversible CO2
Addition to a Si=O Bond and Synthesis of a Persistent SiO2
-CO2
Cycloadduct Stabilized by a Lewis Donor-Acceptor Ligand. Angew Chem Int Ed Engl 2018; 57:2635-2638. [DOI: 10.1002/anie.201709787] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2017] [Revised: 11/28/2017] [Indexed: 11/07/2022]
Affiliation(s)
- Ricardo Rodriguez
- Université de Toulouse; UPS, and CNRS, LHFA UMR 5069; 31062 Toulouse France
- Departamento de Química Inorgánica; ISQCH-Universidad de Zaragoza; 50009 Zaragoza Spain
| | | | - Jérémy Saouli
- Université de Toulouse; UPS, and CNRS, LHFA UMR 5069; 31062 Toulouse France
| | | | - Antoine Baceiredo
- Université de Toulouse; UPS, and CNRS, LHFA UMR 5069; 31062 Toulouse France
| | - Vicenç Branchadell
- Departament de Química; Universitat Autònoma de Barcelona; 08193 Bellaterra Spain
| | - Tsuyoshi Kato
- Université de Toulouse; UPS, and CNRS, LHFA UMR 5069; 31062 Toulouse France
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39
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Rodriguez R, Alvarado-Beltran I, Saouli J, Saffon-Merceron N, Baceiredo A, Branchadell V, Kato T. Reversible CO2
Addition to a Si=O Bond and Synthesis of a Persistent SiO2
-CO2
Cycloadduct Stabilized by a Lewis Donor-Acceptor Ligand. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201709787] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Ricardo Rodriguez
- Université de Toulouse; UPS, and CNRS, LHFA UMR 5069; 31062 Toulouse France
- Departamento de Química Inorgánica; ISQCH-Universidad de Zaragoza; 50009 Zaragoza Spain
| | | | - Jérémy Saouli
- Université de Toulouse; UPS, and CNRS, LHFA UMR 5069; 31062 Toulouse France
| | | | - Antoine Baceiredo
- Université de Toulouse; UPS, and CNRS, LHFA UMR 5069; 31062 Toulouse France
| | - Vicenç Branchadell
- Departament de Química; Universitat Autònoma de Barcelona; 08193 Bellaterra Spain
| | - Tsuyoshi Kato
- Université de Toulouse; UPS, and CNRS, LHFA UMR 5069; 31062 Toulouse France
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40
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Uraguchi D, Sasaki H, Kimura Y, Ito T, Ooi T. Molecular Design, Synthesis, and Asymmetric Catalysis of a Hexacoordinated Chiral Phosphate Ion. J Am Chem Soc 2018; 140:2765-2768. [DOI: 10.1021/jacs.7b13433] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Daisuke Uraguchi
- Institute
of Transformative Bio-Molecules (WPI-ITbM) and Department of Molecular
and Macromolecular Chemistry, Graduate School of Engineering, Nagoya University, Nagoya 464-8601, Japan
| | - Hitoshi Sasaki
- Institute
of Transformative Bio-Molecules (WPI-ITbM) and Department of Molecular
and Macromolecular Chemistry, Graduate School of Engineering, Nagoya University, Nagoya 464-8601, Japan
| | - Yuto Kimura
- Institute
of Transformative Bio-Molecules (WPI-ITbM) and Department of Molecular
and Macromolecular Chemistry, Graduate School of Engineering, Nagoya University, Nagoya 464-8601, Japan
| | - Takaki Ito
- Institute
of Transformative Bio-Molecules (WPI-ITbM) and Department of Molecular
and Macromolecular Chemistry, Graduate School of Engineering, Nagoya University, Nagoya 464-8601, Japan
| | - Takashi Ooi
- Institute
of Transformative Bio-Molecules (WPI-ITbM) and Department of Molecular
and Macromolecular Chemistry, Graduate School of Engineering, Nagoya University, Nagoya 464-8601, Japan
- CREST,
Japan Science and Technology Agency (JST), Nagoya University, Nagoya 464-8601, Japan
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41
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Cao W, Tan D, Lee R, Tan CH. Enantioselective 1,2-Anionotropic Rearrangement of Acylsilane through a Bisguanidinium Silicate Ion Pair. J Am Chem Soc 2018; 140:1952-1955. [DOI: 10.1021/jacs.7b13056] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Weidi Cao
- Division
of Chemistry and Biological Chemistry, Nanyang Technological University, 21 Nanyang Link, Singapore 637371
| | - Davin Tan
- Division
of Chemistry and Biological Chemistry, Nanyang Technological University, 21 Nanyang Link, Singapore 637371
- Division
of Science and Math, Singapore University of Technology and Design, 8 Somapah Road, Singapore 487372
| | - Richmond Lee
- Division
of Science and Math, Singapore University of Technology and Design, 8 Somapah Road, Singapore 487372
| | - Choon-Hong Tan
- Division
of Chemistry and Biological Chemistry, Nanyang Technological University, 21 Nanyang Link, Singapore 637371
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42
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Sumita A, Otani Y, Ohwada T. Electrophilic activation of aminocarboxylic acid by phosphate ester promotes Friedel-Crafts acylation by overcoming charge-charge repulsion. Org Biomol Chem 2017; 15:9398-9407. [PMID: 29094123 DOI: 10.1039/c7ob02158e] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Friedel-Crafts acylation of aromatic compounds with aminocarboxylic acids proceeds efficiently in the presence of a tailored phosphate ester and a strong Brønsted acid, despite the strong charge-charge repulsion associated with acylium ion formation. Here, we investigate the mechanism of this electrophilic aromatic acylation reaction, focusing on how the aminocarboxylic acid is activated by the phosphate ester and how the charge-charge repulsion is overcome. In the first step of the reaction, an acyl phosphate is generated from the aminocarboxylic acid through the intervention of the phosphate ester, which possesses three methyl salicylate ester linkages. The o-methyl salicylates enhance the reactivity of the phosphate ester via a protonation-induced conformational change, thereby overwhelming the charge-charge repulsion associated with the acylium ion formation. Weakening of the resonance interaction in the C(O)-O(P) bond by the lone-pair electrons of the ether oxygen atom of the carboxylic acid functionality contributes to the rapid formation of the acylium ion. Thus, our results show that the formation of aromatic ketones from various carboxylic acids proceeds because the strong leaving ability of the acyl phosphate overwhelms the charge-charge repulsion associated with the formation of the acylium ion. This information will be helpful to improve the design of tailored phosphate reagents.
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Affiliation(s)
- Akinari Sumita
- Graduate School of Pharmaceutical Sciences, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan.
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43
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Baus JA, Tacke R. Neutral six-coordinate bis(dithiocarbamato)silicon(iv) complexes with an SiCl 2S 4 skeleton. Dalton Trans 2017; 46:8751-8755. [PMID: 27713941 DOI: 10.1039/c6dt03264h] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Treatment of SiCl4 with lithium dithiocarbamates of the formula type Li[R2NCS2] (R = Ph, iPr) in a molar ratio of 1 : 2 afforded the respective six-coordinate silicon(iv) complexes [Ph2NCS2]2SiCl2 (3) and [iPr2NCS2]2SiCl2 (4), which were isolated as the solvates 3·MeCN and 4·MeCN. Compounds 3·MeCN and 4·MeCN were structurally characterised by single-crystal X-ray diffraction and multinuclear NMR spectroscopic studies in the solid state and in solution. In this study, dithiocarbamato ligands were implemented in silicon coordination chemistry for the first time. Compounds 3 and 4 represent the first six-coordinate silicon(iv) complexes with an SiCl2S4 skeleton.
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Affiliation(s)
- Johannes A Baus
- Universität Würzburg, Institut für Anorganische Chemie, Am Hubland, 97074 Würzburg, Germany.
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44
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Varjosaari SE, Skrypai V, Suating P, Hurley JJM, Lio AMD, Gilbert TM, Adler MJ. Simple Metal-Free Direct Reductive Amination Using Hydrosilatrane to Form Secondary and Tertiary Amines. Adv Synth Catal 2017. [DOI: 10.1002/adsc.201700079] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Sami E. Varjosaari
- Department of Chemistry & Biochemistry; Northern Illinois University; 1425 W. Lincoln Hwy. DeKalb, IL 60115 USA
| | - Vladislav Skrypai
- Department of Chemistry & Biochemistry; Northern Illinois University; 1425 W. Lincoln Hwy. DeKalb, IL 60115 USA
| | - Paolo Suating
- Department of Chemistry & Biochemistry; Northern Illinois University; 1425 W. Lincoln Hwy. DeKalb, IL 60115 USA
| | - Joseph J. M. Hurley
- Department of Chemistry & Biochemistry; Northern Illinois University; 1425 W. Lincoln Hwy. DeKalb, IL 60115 USA
| | - Ashley M. De Lio
- Department of Chemistry & Biochemistry; Northern Illinois University; 1425 W. Lincoln Hwy. DeKalb, IL 60115 USA
| | - Thomas M. Gilbert
- Department of Chemistry & Biochemistry; Northern Illinois University; 1425 W. Lincoln Hwy. DeKalb, IL 60115 USA
| | - Marc J. Adler
- Department of Chemistry & Biochemistry; Northern Illinois University; 1425 W. Lincoln Hwy. DeKalb, IL 60115 USA
- Faculty of Science; University of Ontario Institute of Technology; 2000 Simcoe Street North Oshawa, ON L1H 7K4 Canada
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45
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Dong C, Bai XF, Lv JY, Cui YM, Cao J, Zheng ZJ, Xu LW. Cs₂CO₃-Initiated Trifluoro-Methylation of Chalcones and Ketones for Practical Synthesis of Trifluoromethylated Tertiary Silyl Ethers. Molecules 2017; 22:molecules22050769. [PMID: 28524100 PMCID: PMC6154635 DOI: 10.3390/molecules22050769] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2017] [Revised: 04/17/2017] [Accepted: 05/05/2017] [Indexed: 12/11/2022] Open
Abstract
It was found that 1,2-trifluoromethylation reactions of ketones, enones, and aldehydes were easily accomplished using the Prakash reagent in the presence of catalytic amounts of cesium carbonate, which represents an experimentally convenient, atom-economic process for this anionic trifluoromethylation of non-enolisable aldehydes and ketones.
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Affiliation(s)
- Cheng Dong
- Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education, Hangzhou Normal University, Hangzhou 311121, China.
| | - Xing-Feng Bai
- Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education, Hangzhou Normal University, Hangzhou 311121, China.
| | - Ji-Yuan Lv
- Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education, Hangzhou Normal University, Hangzhou 311121, China.
| | - Yu-Ming Cui
- Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education, Hangzhou Normal University, Hangzhou 311121, China.
| | - Jian Cao
- Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education, Hangzhou Normal University, Hangzhou 311121, China.
| | - Zhan-Jiang Zheng
- Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education, Hangzhou Normal University, Hangzhou 311121, China.
| | - Li-Wen Xu
- Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education, Hangzhou Normal University, Hangzhou 311121, China.
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46
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Kano N, O'Brien NJ, Uematsu R, Ramozzi R, Morokuma K. Trihydroborates and Dihydroboranes Bearing a Pentacoordinated Phosphorus Atom: Double Ring Expansion To Balance the Coordination States. Angew Chem Int Ed Engl 2017; 56:5882-5885. [PMID: 28436088 DOI: 10.1002/anie.201701718] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2017] [Revised: 03/24/2017] [Indexed: 01/09/2023]
Abstract
The first trihydroborate bearing a pentacoordinated phosphorus atom was synthesized as a new P-B bonded compound. Hydride abstraction of the trihydroborate gave an intermediary dihydroborane, which showed hydroboration reactivity and was trapped with pyridine whilst maintaining the P-B bond. The dihydroborane underwent a rearrangement, which involved a double ring expansion to compensate for the unbalanced coordination states of the phosphorus and boron atoms, to give a new fused bicyclic phosphine-boronate.
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Affiliation(s)
- Naokazu Kano
- Department of Chemistry, Graduate School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan
| | - Nathan J O'Brien
- Department of Chemistry, Graduate School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan
| | - Ryohei Uematsu
- Fukui Institute for Fundamental Chemistry, Kyoto University, Takano-Nishihiraki-cho 34-4, Sakyou-ku, Kyoto, 606-8103, Japan
| | - Romain Ramozzi
- Fukui Institute for Fundamental Chemistry, Kyoto University, Takano-Nishihiraki-cho 34-4, Sakyou-ku, Kyoto, 606-8103, Japan
| | - Keiji Morokuma
- Fukui Institute for Fundamental Chemistry, Kyoto University, Takano-Nishihiraki-cho 34-4, Sakyou-ku, Kyoto, 606-8103, Japan
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47
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Liu WB, Schuman DP, Yang YF, Toutov AA, Liang Y, Klare HFT, Nesnas N, Oestreich M, Blackmond DG, Virgil SC, Banerjee S, Zare RN, Grubbs RH, Houk KN, Stoltz BM. Potassium tert-Butoxide-Catalyzed Dehydrogenative C–H Silylation of Heteroaromatics: A Combined Experimental and Computational Mechanistic Study. J Am Chem Soc 2017; 139:6867-6879. [DOI: 10.1021/jacs.6b13031] [Citation(s) in RCA: 127] [Impact Index Per Article: 18.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Wen-Bo Liu
- Division
of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, California 91125, United States
| | - David P. Schuman
- Division
of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, California 91125, United States
| | - Yun-Fang Yang
- Department
of Chemistry and Biochemistry, University of California, Los Angeles, California 90095, United States
| | - Anton A. Toutov
- Division
of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, California 91125, United States
| | - Yong Liang
- Department
of Chemistry and Biochemistry, University of California, Los Angeles, California 90095, United States
| | - Hendrik F. T. Klare
- Institut
für Chemie, Technische Universität Berlin, Strasse des 17. Juni 115, 10623 Berlin, Germany
| | - Nasri Nesnas
- Department
of Chemistry, Florida Institute of Technology, 150 West University Boulevard, Melbourne, Florida 32901, United States
| | - Martin Oestreich
- Institut
für Chemie, Technische Universität Berlin, Strasse des 17. Juni 115, 10623 Berlin, Germany
| | - Donna G. Blackmond
- Department
of Chemistry, The Scripps Research Institute, La Jolla, California 92037, United States
| | - Scott C. Virgil
- Division
of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, California 91125, United States
| | - Shibdas Banerjee
- Department
of Chemistry, Stanford University, Stanford, California 94305, United States
| | - Richard N. Zare
- Department
of Chemistry, Stanford University, Stanford, California 94305, United States
| | - Robert H. Grubbs
- Division
of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, California 91125, United States
| | - K. N. Houk
- Department
of Chemistry and Biochemistry, University of California, Los Angeles, California 90095, United States
| | - Brian M. Stoltz
- Division
of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, California 91125, United States
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48
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Kano N, O'Brien NJ, Uematsu R, Ramozzi R, Morokuma K. Trihydroborates and Dihydroboranes Bearing a Pentacoordinated Phosphorus Atom: Double Ring Expansion To Balance the Coordination States. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201701718] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Naokazu Kano
- Department of Chemistry; Graduate School of Science; The University of Tokyo; 7-3-1 Hongo, Bunkyo-ku Tokyo 113-0033 Japan
| | - Nathan J. O'Brien
- Department of Chemistry; Graduate School of Science; The University of Tokyo; 7-3-1 Hongo, Bunkyo-ku Tokyo 113-0033 Japan
| | - Ryohei Uematsu
- Fukui Institute for Fundamental Chemistry; Kyoto University; Takano-Nishihiraki-cho 34-4, Sakyou-ku Kyoto 606-8103 Japan
| | - Romain Ramozzi
- Fukui Institute for Fundamental Chemistry; Kyoto University; Takano-Nishihiraki-cho 34-4, Sakyou-ku Kyoto 606-8103 Japan
| | - Keiji Morokuma
- Fukui Institute for Fundamental Chemistry; Kyoto University; Takano-Nishihiraki-cho 34-4, Sakyou-ku Kyoto 606-8103 Japan
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49
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Ullah B, Chen J, Zhang Z, Xing H, Yang Q, Bao Z, Ren Q. 1-Ethyl-3-methylimidazolium acetate as a highly efficient organocatalyst for cyanosilylation of carbonyl compounds with trimethylsilyl cyanide. Sci Rep 2017; 7:42699. [PMID: 28198462 PMCID: PMC5309884 DOI: 10.1038/srep42699] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2016] [Accepted: 12/21/2016] [Indexed: 01/31/2023] Open
Abstract
1-Ethyl-3-methylimidazolium acetate is introduced as a robust organocatalyst for solvent-free cyanosilylation of carbonyl compounds with trimethylsilyl cyanide (TMSCN). The catalyst loading can be reduced to as low as 0.1–0.0001 mol % under mild reaction conditions, giving considerably high TOF values from 10,843 h−1 to 10,602,410 h−1 in the field of organocatalyzed transformations. The present protocol not only tolerates with extensive carbonyl compounds but also provides somewhat insight into the mechanism of ionic liquids (ILs)-catalyzed reactions.
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Affiliation(s)
- Bakhtar Ullah
- Key Laboratory of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, China
| | - Jingwen Chen
- Key Laboratory of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, China
| | - Zhiguo Zhang
- Key Laboratory of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, China
| | - Huabin Xing
- Key Laboratory of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, China
| | - Qiwei Yang
- Key Laboratory of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, China
| | - Zongbi Bao
- Key Laboratory of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, China
| | - Qilong Ren
- Key Laboratory of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, China
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50
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Koch JG, Brennessel WW, Kraft BM. Neutral and Cationic Bis-Chelate Monoorganosilicon(IV) Complexes of 1-Hydroxy-2-pyridinone. Organometallics 2017. [DOI: 10.1021/acs.organomet.6b00796] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
| | - William W. Brennessel
- Department
of Chemistry, University of Rochester, Rochester, New York 14627, United States
| | - Bradley M. Kraft
- Department
of Chemistry, St. John Fisher College, Rochester, New York 14618, United States
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