51
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Hao X, Li TR, Chen H, Gini A, Zhang X, Rosset S, Mazet C, Tiefenbacher K, Matile S. Bioinspired Ether Cyclizations within a π-Basic Capsule Compared to Autocatalysis on π-Acidic Surfaces and Pnictogen-Bonding Catalysts. Chemistry 2021; 27:12215-12223. [PMID: 34060672 PMCID: PMC8456975 DOI: 10.1002/chem.202101548] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2021] [Indexed: 12/15/2022]
Abstract
While the integration of supramolecular principles in catalysis attracts increasing attention, a direct comparative assessment of the resulting systems catalysts to work out distinct characteristics is often difficult. Herein is reported how the broad responsiveness of ether cyclizations to diverse inputs promises to fill this gap. Cyclizations in the confined, π-basic and Brønsted acidic interior of supramolecular capsules, for instance, are found to excel with speed (exceeding general Brønsted acid and hydrogen-bonding catalysts by far) and selective violations of the Baldwin rules (as extreme as the so far unique pnictogen-bonding catalysts). The complementary cyclization on π-acidic aromatic surfaces remains unique with regard to autocatalysis, which is shown to be chemo- and diastereoselective with regard to product-like co-catalysts but, so far, not enantioselective.
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Affiliation(s)
- Xiaoyu Hao
- Department of Organic Chemistry, University of Geneva, Quai Ernest Ansermet 30, CH-1121, Geneva, Switzerland.,NCCR Molecular Systems Engineering BPR 1095, Mattenstrasse 24a, CH-4058, Basel, Switzerland.,College of Materials, Chemistry and Chemical Engineering, Chengdu University of Technology, 1 Dongsan Road Erxianqiao, Chengdu, 610059, P.R. China
| | - Tian-Ren Li
- NCCR Molecular Systems Engineering BPR 1095, Mattenstrasse 24a, CH-4058, Basel, Switzerland.,Department of Chemistry, University of Basel, Mattenstrasse 24a, CH-4058, Basel, Switzerland
| | - Hao Chen
- Department of Organic Chemistry, University of Geneva, Quai Ernest Ansermet 30, CH-1121, Geneva, Switzerland.,NCCR Molecular Systems Engineering BPR 1095, Mattenstrasse 24a, CH-4058, Basel, Switzerland
| | - Andrea Gini
- Department of Organic Chemistry, University of Geneva, Quai Ernest Ansermet 30, CH-1121, Geneva, Switzerland.,NCCR Molecular Systems Engineering BPR 1095, Mattenstrasse 24a, CH-4058, Basel, Switzerland
| | - Xiang Zhang
- Department of Organic Chemistry, University of Geneva, Quai Ernest Ansermet 30, CH-1121, Geneva, Switzerland.,NCCR Molecular Systems Engineering BPR 1095, Mattenstrasse 24a, CH-4058, Basel, Switzerland.,Shaanxi Key Laboratory of Natural Products and Chemical Biology, College of Science, Northwest A&F University, Xianyang Shi, Yangling, 712100, P. R. China
| | - Stéphane Rosset
- Department of Organic Chemistry, University of Geneva, Quai Ernest Ansermet 30, CH-1121, Geneva, Switzerland
| | - Clément Mazet
- Department of Organic Chemistry, University of Geneva, Quai Ernest Ansermet 30, CH-1121, Geneva, Switzerland
| | - Konrad Tiefenbacher
- NCCR Molecular Systems Engineering BPR 1095, Mattenstrasse 24a, CH-4058, Basel, Switzerland.,Department of Chemistry, University of Basel, Mattenstrasse 24a, CH-4058, Basel, Switzerland.,Department of Biosystems Science and Engineering, ETH Zurich, Mattenstrasse 26, CH-4058, Basel, Switzerland
| | - Stefan Matile
- Department of Organic Chemistry, University of Geneva, Quai Ernest Ansermet 30, CH-1121, Geneva, Switzerland.,NCCR Molecular Systems Engineering BPR 1095, Mattenstrasse 24a, CH-4058, Basel, Switzerland
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52
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Zhou B, Gabbaï FP. Lewis Acidic Telluronium Cations: Enhanced Chalcogen-Bond Donor Properties and Application to Transfer Hydrogenation Catalysis. Organometallics 2021. [DOI: 10.1021/acs.organomet.1c00279] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Benyu Zhou
- Department of Chemistry, Texas A&M University, College Station, Texas 77843-3255, United States of America
| | - François P. Gabbaï
- Department of Chemistry, Texas A&M University, College Station, Texas 77843-3255, United States of America
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53
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Li N, Fan Q, Xu L, Ma R, Xu S, Qiao J, Xu X, Guo R, Yun K. Air-stable Organoantimony (III) Perfluoroalkyl(aryl)sulfonate complexes as highly efficient, selective, and recyclable catalysts for C–C and C–N bond-forming reactions. MOLECULAR CATALYSIS 2021. [DOI: 10.1016/j.mcat.2021.111727] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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54
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Zhou B, Gabbaï FP. Anion Chelation via Double Chalcogen Bonding: The Case of a Bis-telluronium Dication and Its Application in Electrophilic Catalysis via Metal-Chloride Bond Activation. J Am Chem Soc 2021; 143:8625-8630. [PMID: 34085823 DOI: 10.1021/jacs.1c04482] [Citation(s) in RCA: 46] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Telluronium cations have long been known to engage their counteranions via secondary interactions. Yet, this property has rarely been exploited for anion binding. Motivated by such an application, we have now synthesized a bis-telluronium dication ([3]2+) that was obtained as a tetrafluoroborate salt by reaction of 2,7-di-tert-butyl-9,9-dimethylxanthene-4,5-diboronic acid with phenoxatellurine difluoride and BF3·OEt2. As confirmed by the formation of Te-(μ-BF4)-Te bridges in the structure of [3][BF4]2, [3]2+ functions as a bidentate Lewis acid toward anions. [3][BF4]2 has also been converted into the more exposed [3][BArF24]2 ([BArF24]- = [B(3,5-(CF3)2C6H3)4]-). The latter, which readily ionizes Ph3CCl, displays a chloride anion binding constant that exceeds that of a monofunctional model compound by almost 4 orders of magnitude. The unique properties of this new bis-telluronium dication are further highlighted by its ability to activate Ph3PAuCl and cis-(Ph3P)2PtCl2, leading to catalytic systems highly active in the cycloisomerization of propargylamide or enyne substrates.
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Affiliation(s)
- Benyu Zhou
- Department of Chemistry, Texas A&M University, College Station, Texas 77843, United States
| | - François P Gabbaï
- Department of Chemistry, Texas A&M University, College Station, Texas 77843, United States
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55
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You D, Zhou B, Hirai M, Gabbaï FP. Distiboranes based on ortho-phenylene backbones as bidentate Lewis acids for fluoride anion chelation. Org Biomol Chem 2021; 19:4949-4957. [PMID: 33988214 DOI: 10.1039/d1ob00536g] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
As part of our efforts in the chemistry of main group platforms that support anion sensing and transport, we are now reporting the synthesis of anitmony-based bidentate Lewis acids featuring the o-C6F4 backbone. These compounds can be easily accessed by reaction of the newly synthesized o-C6F4(SbPh2)2 (5) with o-chloranil or octafluorophenanthra-9,10-quinone, affording the corresponding distiboranes 6 and 7 of general formula o-C6F4(SbPh2(diolate))2 with diolate = tetrachlorocatecholate for 6 and octafluorophenanthrene-9,10-diolate for 7, respectively. While 6 is very poorly soluble, its octafluorophenanthrene-9,10-diolate analog 7 readily dissolves in CH2Cl2 and undergoes swift conversion into the corresponding fluoride chelate complex [7-μ2-F]- which has been isolated as a [nBu4N]+ salt. The o-C6H4 analog of 7, referred to as 8, has also been prepared. Although less Lewis acidic than 7, 8 also forms a very stable fluoride chelate complex ([8-μ2-F]-). Altogether, our experiental results, coupled with computational analyses and fluoride anion affinity calculations, show that 7 and 8 are some of the strongest antimony-based fluoride anion chelators prepared to date. Another notable aspect of this work concerns the use of the octafluorophenanthrene-9,10-diolate ligand and its ablity to impart advantageous solubility and Lewis acidity properties.
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Affiliation(s)
- Di You
- Department of Chemistry, Texas A&M University, College Station, TX 77843, USA.
| | - Benyu Zhou
- Department of Chemistry, Texas A&M University, College Station, TX 77843, USA.
| | - Masato Hirai
- Department of Chemistry, Texas A&M University, College Station, TX 77843, USA.
| | - François P Gabbaï
- Department of Chemistry, Texas A&M University, College Station, TX 77843, USA.
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56
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Tang N, Song X, Yang T, Qiu R, Yin SF. Synthesis and structure of the bimetallic organoantimony catalyst and its application in diastereoselective direct Mannich reaction as facile separation catalytic system. J Organomet Chem 2021. [DOI: 10.1016/j.jorganchem.2021.121820] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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57
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Zhang J, Wei J, Ding WY, Li S, Xiang SH, Tan B. Asymmetric Pnictogen-Bonding Catalysis: Transfer Hydrogenation by a Chiral Antimony(V) Cation/Anion Pair. J Am Chem Soc 2021; 143:6382-6387. [PMID: 33904724 DOI: 10.1021/jacs.1c02808] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Pnictogen-bonding catalysis based on σ-hole interactions has recently attracted the attention of synthetic chemists. As a proof-of-concept for asymmetric pnictogen-bonding catalysis, we report herein an enantioselective transfer hydrogenation of benzoxazines catalyzed by a novel chiral antimony cation/anion pair. The chiral pnictogen catalyst library could be rapidly accessed from triarylstibine with readily available mandelic acid analogues, and the catalyst displays remarkable efficiency and enantiocontrol potency even at 0.05 mol % loading. Moreover, the properties of the catalyst and the mechanistic insights have been investigated by nonlinear effect studies, 1H NMR, LC-MS, and control experiments.
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Affiliation(s)
- Jian Zhang
- School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150001, China.,Shenzhen Grubbs Institute, Department of Chemistry, Southern University of Science and Technology, Shenzhen 518055, China
| | - Jun Wei
- Shenzhen Grubbs Institute, Department of Chemistry, Southern University of Science and Technology, Shenzhen 518055, China
| | - Wei-Yi Ding
- Shenzhen Grubbs Institute, Department of Chemistry, Southern University of Science and Technology, Shenzhen 518055, China
| | - Shaoyu Li
- Shenzhen Grubbs Institute, Department of Chemistry, Southern University of Science and Technology, Shenzhen 518055, China.,Academy for Advanced Interdisciplinary Studies, Southern University of Science and Technology, Shenzhen 518055, China
| | - Shao-Hua Xiang
- Shenzhen Grubbs Institute, Department of Chemistry, Southern University of Science and Technology, Shenzhen 518055, China.,Academy for Advanced Interdisciplinary Studies, Southern University of Science and Technology, Shenzhen 518055, China
| | - Bin Tan
- Shenzhen Grubbs Institute, Department of Chemistry, Southern University of Science and Technology, Shenzhen 518055, China
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58
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Nishida Y, Suzuki T, Takagi Y, Amma E, Tajima R, Kuwano S, Arai T. A Hypervalent Cyclic Dibenzoiodolium Salt as a Halogen-Bond-Donor Catalyst for the [4+2] Cycloaddition of 2-Alkenylindoles. Chempluschem 2021; 86:741-744. [PMID: 33942571 DOI: 10.1002/cplu.202100089] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2021] [Revised: 04/15/2021] [Indexed: 12/11/2022]
Abstract
A stable, hypervalent cyclic dibenzoiodolium salt acted as a strong halogen bonding (XB)-donor catalyst for [4+2] cycloaddition of 2-alkenylindoles, and not as an oxidizing agent. The cross-[4+2] cycloaddition of 2-vinylindoles with 2-alkenylindoles was catalyzed smoothly by the hypervalent cyclic dibenzoiodolium triflate catalyst to give the tetrahydrocarbazoles in up to 99 % yield with 17 : 1 diastereoselectivity. The hypervalent cyclic dibenzoiodolium salt was also applicable to the Povarov reaction of 2-vinylindole with N-p-methoxyphenyl (PMP) imine to give the indolyl-tetrahydroquinoline in 83 % yield.
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Affiliation(s)
- Yuki Nishida
- Soft Molecular Activation Research Center (SMARC), Chiba Iodine Resource Innovation Center (CIRIC), Molecular Chirality Research Center (MCRC), Department of Chemistry, Graduate School of Science, Chiba University, 1-33 Yayoi, Inage, Chiba, 263-8522, Japan
| | - Takumi Suzuki
- Soft Molecular Activation Research Center (SMARC), Chiba Iodine Resource Innovation Center (CIRIC), Molecular Chirality Research Center (MCRC), Department of Chemistry, Graduate School of Science, Chiba University, 1-33 Yayoi, Inage, Chiba, 263-8522, Japan
| | - Yuri Takagi
- Soft Molecular Activation Research Center (SMARC), Chiba Iodine Resource Innovation Center (CIRIC), Molecular Chirality Research Center (MCRC), Department of Chemistry, Graduate School of Science, Chiba University, 1-33 Yayoi, Inage, Chiba, 263-8522, Japan
| | - Emi Amma
- Soft Molecular Activation Research Center (SMARC), Chiba Iodine Resource Innovation Center (CIRIC), Molecular Chirality Research Center (MCRC), Department of Chemistry, Graduate School of Science, Chiba University, 1-33 Yayoi, Inage, Chiba, 263-8522, Japan
| | - Ryoya Tajima
- Soft Molecular Activation Research Center (SMARC), Chiba Iodine Resource Innovation Center (CIRIC), Molecular Chirality Research Center (MCRC), Department of Chemistry, Graduate School of Science, Chiba University, 1-33 Yayoi, Inage, Chiba, 263-8522, Japan
| | - Satoru Kuwano
- Soft Molecular Activation Research Center (SMARC), Chiba Iodine Resource Innovation Center (CIRIC), Molecular Chirality Research Center (MCRC), Department of Chemistry, Graduate School of Science, Chiba University, 1-33 Yayoi, Inage, Chiba, 263-8522, Japan
| | - Takayoshi Arai
- Soft Molecular Activation Research Center (SMARC), Chiba Iodine Resource Innovation Center (CIRIC), Molecular Chirality Research Center (MCRC), Department of Chemistry, Graduate School of Science, Chiba University, 1-33 Yayoi, Inage, Chiba, 263-8522, Japan
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59
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Smolyaninov IV, Fukin GK, Berberova NT, Poddel’sky AI. Triphenylantimony(V) Catecholates of the Type (3-RS-4,6-DBCat)SbPh 3-Catechol Thioether Derivatives: Structure, Electrochemical Properties, and Antiradical Activity. Molecules 2021; 26:2171. [PMID: 33918799 PMCID: PMC8069174 DOI: 10.3390/molecules26082171] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2021] [Revised: 04/07/2021] [Accepted: 04/08/2021] [Indexed: 11/16/2022] Open
Abstract
A new series of triphenylantimony(V) 3-alkylthio/arylthio-substituted 4,6-di-tert-butylcatecholates of the type (3-RS-4,6-DBCat)SbPh3, where R = n-butyl (1), n-hexyl (2), n-octyl (3), cyclopentyl (4), cyclohexyl (5), benzyl (6), phenyl (7), and naphthyl-2 (8), were synthesized from the corresponding catechol thioethers and Ph3SbBr2 in the presence of a base. The crystal structures of 1, 2, 3, and 5 were determined by single-crystal X-ray analysis. The coordination polyhedron of 1-3 is better described as a tetragonal pyramid with a different degree of distortion, while that for 5- was a distorted trigonal bipyramid (τ = 0.014, 0.177, 0.26, 0.56, respectively). Complexes demonstrated different crystal packing of molecules. The electrochemical oxidation of the complexes involved the catecholate group as well as the thioether linker. The introduction of a thioether fragment into the aromatic ring of catechol ligand led to a shift in the potential of the "catechol/o-semiquinone" redox transition to the anodic region, which indicated the electron-withdrawing nature of the RS group. The radical scavenging activity of the complexes was determined in the reaction with DPPH radical.
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Affiliation(s)
- Ivan V. Smolyaninov
- Department of Chemistry, Astrakhan State Technical University, 16 Tatisheva Str., 414056 Astrakhan, Russia; (I.V.S.); (N.T.B.)
| | - Georgy K. Fukin
- G.A. Razuvaev Institute of Organometallic Chemistry, Russian Academy of Sciences, 49 Tropinina Str., 603137 Nizhny Novgorod, Russia;
| | - Nadezhda T. Berberova
- Department of Chemistry, Astrakhan State Technical University, 16 Tatisheva Str., 414056 Astrakhan, Russia; (I.V.S.); (N.T.B.)
| | - Andrey I. Poddel’sky
- G.A. Razuvaev Institute of Organometallic Chemistry, Russian Academy of Sciences, 49 Tropinina Str., 603137 Nizhny Novgorod, Russia;
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60
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Belli RG, Pantazis DA, McDonald R, Rosenberg L. Reversible Silylium Transfer between P-H and Si-H Donors. Angew Chem Int Ed Engl 2021; 60:2379-2384. [PMID: 33031611 DOI: 10.1002/anie.202011372] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2020] [Indexed: 11/11/2022]
Abstract
The Mo=PR2 π* orbital in a Mo phosphenium complex acts as acceptor in a new PIII -based Lewis superacid. This Lewis acid (LA) participates in electrophilic Si-H abstraction from E3 SiH to give a Mo-bound secondary phosphine ligand, Mo-PR2 H. The resulting Et3 Si+ ion remains associated with the Mo complex, stabilized by η1 -P-H donation, yet undergoes rapid exchange with an η1 -Si-H adduct of free silane in solution. The equilibrium between these two adducts presents an opportunity to assess the role of this new LA in catalytic reactions of silanes: is the LA acting as a catalyst or as an initiator? Preliminary results suggest that a cycle including the Mo-bound phosphine-silylium adduct dominates in the catalytic hydrosilylation of acetophenone, relative to a putative cycle involving the silane-silylium adduct or "free" silylium.
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Affiliation(s)
- Roman G Belli
- Department of Chemistry, University of Victoria, P.O. Box 1700 STN CSC, Victoria, British Columbia, V8W 2Y2, Canada
| | - Dimitrios A Pantazis
- Max-Planck-Institut für Kohlenforschung, Kaiser-Wilhelm-Platz 1, 45470, Mülheim an der Ruhr, Germany
| | - Robert McDonald
- X-ray Crystallography Laboratory, Department of Chemistry, University of Alberta, Edmonton, Alberta, T6G 2G2, Canada
| | - Lisa Rosenberg
- Department of Chemistry, University of Victoria, P.O. Box 1700 STN CSC, Victoria, British Columbia, V8W 2Y2, Canada
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61
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Belli RG, Pantazis DA, McDonald R, Rosenberg L. Reversible Silylium Transfer between P‐H and Si‐H Donors. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202011372] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Roman G. Belli
- Department of Chemistry University of Victoria P.O. Box 1700 STN CSC Victoria British Columbia V8W 2Y2 Canada
| | - Dimitrios A. Pantazis
- Max-Planck-Institut für Kohlenforschung Kaiser-Wilhelm-Platz 1 45470 Mülheim an der Ruhr Germany
| | - Robert McDonald
- X-ray Crystallography Laboratory Department of Chemistry University of Alberta Edmonton Alberta T6G 2G2 Canada
| | - Lisa Rosenberg
- Department of Chemistry University of Victoria P.O. Box 1700 STN CSC Victoria British Columbia V8W 2Y2 Canada
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62
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You D, Smith JE, Sen S, Gabbaï FP. A Stiboranyl Platinum Triflate Complex as an Electrophilic Catalyst. Organometallics 2020. [DOI: 10.1021/acs.organomet.0c00193] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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63
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Sakabe M, Ooizumi A, Fujita W, Aoyagi S, Sato S. Synthesis and Molecular Structure of Pseudo‐Hexacoordinated Pnictines Bearing 2‐Phenylpyridine Ligands. Eur J Inorg Chem 2020. [DOI: 10.1002/ejic.202000795] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Masato Sakabe
- Department of Chemistry Graduate School of Science Tokyo Metropolitan University 1‐1 Minami‐osawa, Hachioji 192‐0397 Tokyo Japan
| | - Akihisa Ooizumi
- Department of Chemistry Graduate School of Science Tokyo Metropolitan University 1‐1 Minami‐osawa, Hachioji 192‐0397 Tokyo Japan
| | - Wataru Fujita
- Faculty of Science and Technology Seikei University 3‐3‐1 Kichijoji‐kitamachi, Musashino 180‐8633 Tokyo Japan
| | - Shinobu Aoyagi
- Department of Information and Basic Science Nagoya City University 467‐8501 Nagoya Japan
| | - Soichi Sato
- Department of Chemistry Graduate School of Science Tokyo Metropolitan University 1‐1 Minami‐osawa, Hachioji 192‐0397 Tokyo Japan
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64
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Clausing ST, Morales Salazar D, Orthaber A. Preparation, photo- and electrochemical studies of a homoleptic imine-phosphaalkene Cu(I) complex. Inorganica Chim Acta 2020. [DOI: 10.1016/j.ica.2020.119958] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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65
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Paraja M, Gini A, Sakai N, Matile S. Pnictogen‐Bonding Catalysis: An Interactive Tool to Uncover Unorthodox Mechanisms in Polyether Cascade Cyclizations. Chemistry 2020; 26:15471-15476. [DOI: 10.1002/chem.202003426] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2020] [Revised: 08/05/2020] [Indexed: 12/28/2022]
Affiliation(s)
- Miguel Paraja
- Department of Organic Chemistry University of Geneva Geneva Switzerland
| | - Andrea Gini
- Department of Organic Chemistry University of Geneva Geneva Switzerland
| | - Naomi Sakai
- Department of Organic Chemistry University of Geneva Geneva Switzerland
| | - Stefan Matile
- Department of Organic Chemistry University of Geneva Geneva Switzerland
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66
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Zhou C, Lei J, Liu Y, Au C, Chen Y, Yin S. An organoantimony nitrate complex with azastibocine framework as water tolerant Lewis acid catalyst for the synthesis of 1,2‐disubstitued benzimidazoles. Appl Organomet Chem 2020. [DOI: 10.1002/aoc.5881] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Cong Zhou
- State Key Laboratory of Chemo/Biosensing and Chemometrics, Advanced Catalytic Engineering Research Center of the Ministry of Education, College of Chemistry and Chemical Engineering Hunan University Changsha 410082 China
| | - Jian Lei
- State Key Laboratory of Chemo/Biosensing and Chemometrics, Advanced Catalytic Engineering Research Center of the Ministry of Education, College of Chemistry and Chemical Engineering Hunan University Changsha 410082 China
- School of Medicine Hunan University of Chinese Medicine Changsha 410208 China
- College of Pharmacy Gannan Medical University Ganzhou 341000 China
| | - Yongping Liu
- School of Medicine Hunan University of Chinese Medicine Changsha 410208 China
| | - Chak‐Tong Au
- College of Chemistry and Chemical Engineering Hunan Institute of Engineering Xiangtan 411104 China
| | - Yi Chen
- School of Medicine Hunan University of Chinese Medicine Changsha 410208 China
| | - Shuang‐Feng Yin
- State Key Laboratory of Chemo/Biosensing and Chemometrics, Advanced Catalytic Engineering Research Center of the Ministry of Education, College of Chemistry and Chemical Engineering Hunan University Changsha 410082 China
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67
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Park G, Gabbaï FP. Redox-controlled chalcogen and pnictogen bonding: the case of a sulfonium/stibonium dication as a preanionophore for chloride anion transport. Chem Sci 2020; 11:10107-10112. [PMID: 34094272 PMCID: PMC8162396 DOI: 10.1039/d0sc04417b] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2020] [Accepted: 08/28/2020] [Indexed: 12/25/2022] Open
Abstract
Our interest in the chemistry of tunable chalcogen and pnictogen bond donors as Lewis acidic platforms for the complexation and transport of anions has led us to investigate examples of such compounds that can be activated by redox events. Here, we describe the synthesis of [o-MePhS(C6H4)SbPh3]2+ ([3]2+) and [o-MePhS(C6H4)Sb(p-Tol)3]2+ ([4]2+), two dicationic stibonium/sulfonium bifunctional Lewis acids which were obtained by methylation of the phenylthioether derivatives [o-PhS(C6H4)SbPh3]+ ([1]+) and [o-PhS(C6H4)Sb(p-Tol)3]+ ([2]+), respectively. An evaluation of the chloride anion transport properties of these derivatives using chloride-loaded POPC unilamellar vesicles shows that the activity of the monocations [1]+ and [2]+ greatly exceeds that of the dications [3]2+ and [4]2+, a phenomenon that we assign to the higher lipophilicity of the monocationic compounds. Harnessing this large transport activity differential, we show that [4]2+ can be used as a prechloridophore that is readily activated by reduction of the sulfonium moiety. Indeed, [4]2+ reacts with GSH to afford [2]+ as an active transporter. This activation, which has been monitored in aqueous solution, can also be carried out in situ, in the presence of the chloride-loaded POPC unilamellar vesicles.
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Affiliation(s)
- Gyeongjin Park
- Department of Chemistry, Texas A&M University College Station Texas 77843-3255 USA
| | - François P Gabbaï
- Department of Chemistry, Texas A&M University College Station Texas 77843-3255 USA
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68
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Affiliation(s)
- Martin Breugst
- Department für Chemie Universität zu Köln Greinstraße 4 50939 Köln Germany
| | - Jonas J. Koenig
- Department für Chemie Universität zu Köln Greinstraße 4 50939 Köln Germany
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69
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Lo Y, Gabbai FP. Cyclometalated Iridium Bipyridine Complexes with Peripheral Antimony Substituents. Z Anorg Allg Chem 2020. [DOI: 10.1002/zaac.201900186] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Ying‐Hao Lo
- Department of Chemistry Texas A&M University 77843 College Station TX USA
| | - François P. Gabbai
- Department of Chemistry Texas A&M University 77843 College Station TX USA
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70
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Zhou B, Gabbaï FP. Redox-controlled chalcogen-bonding at tellurium: impact on Lewis acidity and chloride anion transport properties. Chem Sci 2020; 11:7495-7500. [PMID: 34123032 PMCID: PMC8159482 DOI: 10.1039/d0sc02872j] [Citation(s) in RCA: 48] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Our interests in the chemistry of atypical main group Lewis acids have led us to devise strategies that augment the affinity of chalcogen-bond donors for anionic guests. In this study, we describe the oxidative methylation of diaryltellurides as one such strategy along with its application to the synthesis of [Mes(C6F5)TeMe]+ and [(C6F5)2TeMe]+ starting from Mes(C6F5)Te and (C6F5)2Te, respectively. These new telluronium cations have been evaluated for their ability to complex and transport chloride anions across phospholipid bilayers. These studies show that, when compared to their neutral Te(ii) precursors, these Te(iv) cations display both higher Lewis acidity and transport activity. The positive attributes of these telluronium cations, which originate from a lowering of the tellurium-centered σ* orbitals and a deepening of the associated σ-holes, demonstrate that the redox state of the main group element provides a convenient handle over its chalcogen-bonding properties. The oxidative alkylation of diorganotellurides enhances the chalcogen-bond donor properties of the tellurium center, an effect manifested in the enhanced chloride anion affinity and transport properties of the resulting telluronium cations.![]()
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Affiliation(s)
- Benyu Zhou
- Department of Chemistry, Texas A&M University College Station Texas 77843-3255 USA
| | - François P Gabbaï
- Department of Chemistry, Texas A&M University College Station Texas 77843-3255 USA
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71
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Gini A, Paraja M, Galmés B, Besnard C, Poblador-Bahamonde AI, Sakai N, Frontera A, Matile S. Pnictogen-bonding catalysis: brevetoxin-type polyether cyclizations. Chem Sci 2020; 11:7086-7091. [PMID: 33250977 PMCID: PMC7690316 DOI: 10.1039/d0sc02551h] [Citation(s) in RCA: 47] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2020] [Accepted: 06/17/2020] [Indexed: 12/30/2022] Open
Abstract
This study marks chemical space available for pnictogen-bonding catalysis, and demonstrates that reactivity accessible in this space is unique.
Pnictogen-bond donors are attractive for use in catalysis because of deep σ holes, high multivalency, rich hypervalency, and chiral binding pockets. We here report natural product inspired epoxide-opening polyether cyclizations catalyzed by fluoroarylated Sb(v) > Sb(iii) > Bi > Sn > Ge. The distinctive characteristic found for pnictogen-bonding catalysis is the breaking of the Baldwin rules, that is selective endo cyclization into the trans-fused ladder oligomers known from the brevetoxins. Moreover, tris(3,4,5-trifluorophenyl)stibines and their hypervalent stiborane catecholates afford different anti-Baldwin stereoselectivity. Lewis (SbCl3), Brønsted (AcOH) and π acids fail to provide similar access to these forbidden rings. Like hydrogen-bonding catalysis differs from Brønsted acid catalysis, pnictogen-bonding catalysis thus emerges as the supramolecular counterpart of covalent Lewis acid catalysis.
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Affiliation(s)
- Andrea Gini
- Department of Organic Chemistry , University of Geneva , Geneva , Switzerland . ; http://www.unige.ch/sciences/chiorg/matile/ ; Tel: +41 22 379 6523
| | - Miguel Paraja
- Department of Organic Chemistry , University of Geneva , Geneva , Switzerland . ; http://www.unige.ch/sciences/chiorg/matile/ ; Tel: +41 22 379 6523
| | - Bartomeu Galmés
- Department de Química , Universitat de les Illes Balears , Palma de Mallorca , Spain
| | - Celine Besnard
- Department of Organic Chemistry , University of Geneva , Geneva , Switzerland . ; http://www.unige.ch/sciences/chiorg/matile/ ; Tel: +41 22 379 6523
| | - Amalia I Poblador-Bahamonde
- Department of Organic Chemistry , University of Geneva , Geneva , Switzerland . ; http://www.unige.ch/sciences/chiorg/matile/ ; Tel: +41 22 379 6523
| | - Naomi Sakai
- Department of Organic Chemistry , University of Geneva , Geneva , Switzerland . ; http://www.unige.ch/sciences/chiorg/matile/ ; Tel: +41 22 379 6523
| | - Antonio Frontera
- Department de Química , Universitat de les Illes Balears , Palma de Mallorca , Spain
| | - Stefan Matile
- Department of Organic Chemistry , University of Geneva , Geneva , Switzerland . ; http://www.unige.ch/sciences/chiorg/matile/ ; Tel: +41 22 379 6523
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72
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73
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Versatile binding modes of acyclic N2X2 (X = O, S and P) ligands towards [GeCl]+ and AuCl units. Inorganica Chim Acta 2020. [DOI: 10.1016/j.ica.2019.119380] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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74
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Deka R, Sarkar A, Butcher RJ, Junk PC, Turner DR, Deacon GB, Singh HB. Isolation of the novel example of a monomeric organotellurinic acid. Dalton Trans 2020; 49:1173-1180. [DOI: 10.1039/c9dt04013g] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
The synthesis of the first example of a monomeric, stable organotellurinic acid is reported by utilizing the σ-hole participation of the Te atom with the N atom of the 2-(2′-pyridyl)phenyl moiety.
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Affiliation(s)
- Rajesh Deka
- Department of Chemistry
- Indian Institute of Technology Bombay
- Mumbai 400076
- India
- IITB-Monash Research Academy
| | - Arup Sarkar
- Department of Chemistry
- Indian Institute of Technology Bombay
- Mumbai 400076
- India
| | | | - Peter C. Junk
- IITB-Monash Research Academy
- Mumbai 400076
- India
- College of Science & Engineering
- James Cook University
| | - David R. Turner
- IITB-Monash Research Academy
- Mumbai 400076
- India
- School of Chemistry
- Monash University
| | - Glen B. Deacon
- IITB-Monash Research Academy
- Mumbai 400076
- India
- School of Chemistry
- Monash University
| | - Harkesh B. Singh
- Department of Chemistry
- Indian Institute of Technology Bombay
- Mumbai 400076
- India
- IITB-Monash Research Academy
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75
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Zhou J, Kim H, Liu LL, Cao LL, Stephan DW. An arene-stabilized η5-pentamethylcyclopentadienyl antimony dication acts as a source of Sb+ or Sb3+ cations. Chem Commun (Camb) 2020; 56:12953-12956. [DOI: 10.1039/d0cc02710c] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
The dicationic compound [(η5-Cp*)Sb(tol)][B(C6F5)4]2 (1) (tol = toluene), which exhibits strong Lewis acidity, reacts with Lewis bases to provide Sb+ or Sb3+ cations.
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Affiliation(s)
- Jiliang Zhou
- Department of Chemistry
- University of Toronto
- Toronto
- Canada
| | - Hyehwang Kim
- Department of Chemistry
- University of Toronto
- Toronto
- Canada
| | - Liu Leo Liu
- Department of Chemistry
- University of Toronto
- Toronto
- Canada
| | - Levy L. Cao
- Department of Chemistry
- University of Toronto
- Toronto
- Canada
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76
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Gomila RM, Frontera A. Charge assisted halogen and pnictogen bonds: insights from the Cambridge Structural Database and DFT calculations. CrystEngComm 2020. [DOI: 10.1039/d0ce00220h] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
This manuscript combines a search in the Cambridge Structural Database and DFT calculations to analyse the existence and importance of charge assisted pnictogen and halogen bonds in halophosphonium salts.
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Affiliation(s)
- Rosa M. Gomila
- Serveis Cientificotècnics
- University of Balearic Islands
- Palma
- Spain
| | - Antonio Frontera
- Departament de Química
- Universitat de les Illes Balears
- 07122 Palma de Mallorca
- Spain
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77
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Moaven S, Andrews MC, Polaske TJ, Karl BM, Unruh DK, Bosch E, Bowling NP, Cozzolino AF. Triple-Pnictogen Bonding as a Tool for Supramolecular Assembly. Inorg Chem 2019; 58:16227-16235. [PMID: 31718176 DOI: 10.1021/acs.inorgchem.9b02761] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Supramolecular assembly utilizing simultaneous formation of three pnictogen bonds around a single antimony vertex was explored via X-ray crystallography, solution NMR, and computational chemistry. An arylethynyl (AE) ligand was designed to complement the three electrophilic regions around the Sb compound. Though solution studies reveal large binding constants for individual pyridyl units with the Sb donor, the rigidity and prearrangement of the AE acceptor proved necessary to achieve simultaneous binding of three acceptors to the Sb-centered pnictogen-bond donor. Calculations and X-ray structures suggest that negative cooperativity upon sequential binding of three acceptors to a Sb center limits the utility of triple-pnictogen bonding pyridyl acceptors. These limitations can be negated, however, when positive cooperativity is designed into a complementary acceptor ligand.
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Affiliation(s)
- Shiva Moaven
- Department of Chemistry and Biochemistry , Texas Tech University , 1204 Boston Avenue , Lubbock , Texas 79409-1061 , United States
| | - Miranda C Andrews
- Department of Chemistry and Biochemistry , Texas Tech University , 1204 Boston Avenue , Lubbock , Texas 79409-1061 , United States
| | - Thomas J Polaske
- Department of Chemistry , University of Wisconsin-Stevens Point , 2101 Fourth Avenue , Stevens Point , Wisconsin 54481 , United States
| | - Brian M Karl
- Department of Chemistry , University of Wisconsin-Stevens Point , 2101 Fourth Avenue , Stevens Point , Wisconsin 54481 , United States
| | - Daniel K Unruh
- Department of Chemistry and Biochemistry , Texas Tech University , 1204 Boston Avenue , Lubbock , Texas 79409-1061 , United States
| | - Eric Bosch
- Chemistry Department , Missouri State University , 901 S. National Ave. , Springfield , Missouri 65897 , United States
| | - Nathan P Bowling
- Department of Chemistry , University of Wisconsin-Stevens Point , 2101 Fourth Avenue , Stevens Point , Wisconsin 54481 , United States
| | - Anthony F Cozzolino
- Department of Chemistry and Biochemistry , Texas Tech University , 1204 Boston Avenue , Lubbock , Texas 79409-1061 , United States
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78
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García-Monforte MÁ, Baya M, Joven-Sancho D, Ara I, Martín A, Menjón B. Increasing Lewis acidity in perchlorophenyl derivatives of antimony. J Organomet Chem 2019. [DOI: 10.1016/j.jorganchem.2019.06.033] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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79
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Strakova K, Assies L, Goujon A, Piazzolla F, Humeniuk HV, Matile S. Dithienothiophenes at Work: Access to Mechanosensitive Fluorescent Probes, Chalcogen-Bonding Catalysis, and Beyond. Chem Rev 2019; 119:10977-11005. [DOI: 10.1021/acs.chemrev.9b00279] [Citation(s) in RCA: 100] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Karolina Strakova
- Department of Organic Chemistry, University of Geneva, Geneva, Switzerland
| | - Lea Assies
- Department of Organic Chemistry, University of Geneva, Geneva, Switzerland
| | - Antoine Goujon
- Department of Organic Chemistry, University of Geneva, Geneva, Switzerland
| | | | | | - Stefan Matile
- Department of Organic Chemistry, University of Geneva, Geneva, Switzerland
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80
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Zhou MM, Jiang BL, Ni SF, Dang L. Lewis Acidic PSbP Pincer Ligand in Pt-Catalyzed 1,6-Enyne Cycloisomerization: A Theoretical Study. J Org Chem 2019; 84:9454-9459. [PMID: 31283220 DOI: 10.1021/acs.joc.9b00794] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The progressively improved heterobimetallic antimony transition metal complex PSbP-Pt (I1) provides superior activity in catalyzed 1,6-enyne cycloisomerization. Our DFT calculations demonstrate that the noninnocent character of the antimony ligand enhances the self-activation of the catalyst precursor through a substrate-aided intramolecular chloride migration, which triggers subsequent reaction. Designed alternative redox noninnocent active species with strong electron-withdrawing groups also show promising catalytic ability due to an electron-deficient antimony ligand, which lowers the typical reaction barrier for the cycloisomerization of 1,6-enyne.
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Affiliation(s)
- Miao-Miao Zhou
- Department of Chemistry and Key Laboratory for Preparation and Application of Ordered Structural Materials of Guangdong Province , Shantou University , Shantou , Guangdong 515063 , P.R. China
| | - Bei-Lei Jiang
- Department of Chemistry , Southern University of Science and Technology , Shenzhen 518055 , P.R. China
| | - Shao-Fei Ni
- Department of Chemistry and Key Laboratory for Preparation and Application of Ordered Structural Materials of Guangdong Province , Shantou University , Shantou , Guangdong 515063 , P.R. China
| | - Li Dang
- Department of Chemistry and Key Laboratory for Preparation and Application of Ordered Structural Materials of Guangdong Province , Shantou University , Shantou , Guangdong 515063 , P.R. China.,Department of Chemistry , Southern University of Science and Technology , Shenzhen 518055 , P.R. China
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81
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82
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Gilhula JC, Radosevich AT. Tetragonal phosphorus(v) cations as tunable and robust catalytic Lewis acids. Chem Sci 2019; 10:7177-7182. [PMID: 31588285 PMCID: PMC6685354 DOI: 10.1039/c9sc02463h] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2019] [Accepted: 06/17/2019] [Indexed: 01/19/2023] Open
Abstract
The synthesis and catalytic reactivity of a class of water-tolerant cationic phosphorus-based Lewis acids is reported.
The synthesis and catalytic reactivity of a class of water-tolerant cationic phosphorus-based Lewis acids is reported. Corrole-based phosphorus(v) cations of the type [ArP(cor)][B(C6F5)4] (Ar = C6H5, 3,5-(CF3)2C6H3; cor = 5,10,15-(C6H5)3corrolato3–, 5,10,15-(C6F5)3corrolato3–) were synthesized and characterized by NMR and X-ray diffraction. The visible electronic absorption spectra of these cationic phosphacorroles depend strongly on the coordination environment at phosphorus, and their Lewis acidities are quantified by spectrophotometric titrations. DFT analyses establish that the character of the P-acceptor orbital comprises P–N antibonding interactions in the basal plane of the phosphacorrole. Consequently, the cationic phosphacorroles display unprecedented stability to water and alcohols while remaining highly active and robust Lewis acid catalysts for carbonyl hydrosilylation, Csp3–H bond functionalization, and carbohydrate deoxygenation reactions.
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Affiliation(s)
- James C Gilhula
- Department of Chemistry , Massachusetts Institute of Technology , Cambridge , MA 02139 , USA .
| | - Alexander T Radosevich
- Department of Chemistry , Massachusetts Institute of Technology , Cambridge , MA 02139 , USA .
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83
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Leroy C, Johannson R, Bryce DL. 121/123Sb Nuclear Quadrupole Resonance Spectroscopy: Characterization of Non-Covalent Pnictogen Bonds and NQR Crystallography. J Phys Chem A 2019; 123:1030-1043. [PMID: 30633524 DOI: 10.1021/acs.jpca.8b11490] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Pnictogen (or pnicogen) bonding is an attractive interaction between the electrophilic region of group 15 elements (N, P, As, Sb, Bi) and a nucleophile. This interaction for which unique applications in catalysis have recently been uncovered continues to gain popularity. Here, we investigate a series of pnictogen-bonded cocrystals based on SbF3 and SbCl3, prepared via mechanochemical ball milling, with 121/123Sb ( I = 5/2 and 7/2, respectively) nuclear quadrupole resonance (NQR) spectroscopy. Observed NQR frequency shifts upon cocrystallization are on the order of 0.1 to 10 MHz and are clearly diagnostic of the formation of pnictogen bonds to antimony. Further evidence for pnictogen bonding is obtained by complementary 13C cross-polarization magic-angle spinning solid-state NMR experiments. DFT calculations of NMR parameters as well as natural localized molecular orbital analyses support the experimental findings and elucidate the electronic origins of the experimental NQR frequency shifts. This work provides insights into the changes in the antimony quadrupolar coupling constant upon pnictogen bonding: strikingly, the decreases noted here parallel those known for hydrogen bonds, but contrast with the increases reported for halogen bonds. The utility of the observed antimony nuclear quadrupolar coupling constants in constraining structural models of cocrystals for which diffraction-based structures are unavailable, i.e., a rudimentary implementation of NQR crystallography, is established. Overall, this work offers a new approach to understand emerging classes of electrophilic interactions and to contextualize them in the broader landscape of established chemical bonding paradigms.
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Affiliation(s)
- César Leroy
- Department of Chemistry and Biomolecular Sciences & Centre for Catalysis Research and Innovation , University of Ottawa , 10 Marie Curie Private , Ottawa , Ontario K1N 6N5 Canada
| | - Ryan Johannson
- Department of Chemistry and Biomolecular Sciences & Centre for Catalysis Research and Innovation , University of Ottawa , 10 Marie Curie Private , Ottawa , Ontario K1N 6N5 Canada
| | - David L Bryce
- Department of Chemistry and Biomolecular Sciences & Centre for Catalysis Research and Innovation , University of Ottawa , 10 Marie Curie Private , Ottawa , Ontario K1N 6N5 Canada
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84
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Lee LM, Tsemperouli M, Poblador-Bahamonde AI, Benz S, Sakai N, Sugihara K, Matile S. Anion Transport with Pnictogen Bonds in Direct Comparison with Chalcogen and Halogen Bonds. J Am Chem Soc 2019; 141:810-814. [DOI: 10.1021/jacs.8b12554] [Citation(s) in RCA: 118] [Impact Index Per Article: 23.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Lucia M. Lee
- School of Chemistry and Biochemistry, NCCR Chemical Biology, University of Geneva, CH-1211 Geneva, Switzerland
| | - Maria Tsemperouli
- School of Chemistry and Biochemistry, NCCR Chemical Biology, University of Geneva, CH-1211 Geneva, Switzerland
| | | | - Sebastian Benz
- School of Chemistry and Biochemistry, NCCR Chemical Biology, University of Geneva, CH-1211 Geneva, Switzerland
| | - Naomi Sakai
- School of Chemistry and Biochemistry, NCCR Chemical Biology, University of Geneva, CH-1211 Geneva, Switzerland
| | - Kaori Sugihara
- School of Chemistry and Biochemistry, NCCR Chemical Biology, University of Geneva, CH-1211 Geneva, Switzerland
| | - Stefan Matile
- School of Chemistry and Biochemistry, NCCR Chemical Biology, University of Geneva, CH-1211 Geneva, Switzerland
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85
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Yang M, Hirai M, Gabbaï FP. Phosphonium–stibonium and bis-stibonium cations as pnictogen-bonding catalysts for the transfer hydrogenation of quinolines. Dalton Trans 2019; 48:6685-6689. [DOI: 10.1039/c9dt01357a] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Bifunctional group 15 dications are effective transfer hydrogenation catalysts, the activity of which culminates in the case of the bis-stibonium dication [o-C6H4(SbMePh2)2]2+.
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Affiliation(s)
- Mengxi Yang
- Department of Chemistry
- Texas A&M University
- College Station
- USA
| | - Masato Hirai
- Department of Chemistry
- Texas A&M University
- College Station
- USA
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86
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Lei J, Peng L, Qiu R, Liu Y, Chen Y, Au CT, Yin SF. Establishing the correlation between catalytic performance and N→Sb donor–acceptor interaction: systematic assessment of azastibocine halide derivatives as water tolerant Lewis acids. Dalton Trans 2019; 48:8478-8487. [DOI: 10.1039/c9dt01100e] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
A series of organoantimony(iii) halide complexes with a tetrahydrodibenzo[c,f][1,5]azastibocine framework were synthesized and employed as water tolerant Lewis acid catalysts.
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Affiliation(s)
- Jian Lei
- State Key Laboratory of Chemo/Biosensing and Chemometrics
- College of Chemistry and Chemical Engineering
- Hunan University
- Changsha 410082
- P. R. China
| | - Lingteng Peng
- State Key Laboratory of Chemo/Biosensing and Chemometrics
- College of Chemistry and Chemical Engineering
- Hunan University
- Changsha 410082
- P. R. China
| | - Renhua Qiu
- State Key Laboratory of Chemo/Biosensing and Chemometrics
- College of Chemistry and Chemical Engineering
- Hunan University
- Changsha 410082
- P. R. China
| | - Yongping Liu
- School of Medicine
- Hunan University of Chinese Medicine
- Changsha 410208
- P. R. China
| | - Yi Chen
- School of Medicine
- Hunan University of Chinese Medicine
- Changsha 410208
- P. R. China
| | - Chak-Tong Au
- College of Chemistry and Chemical Engineering
- Hunan Institute of Engineering
- Xiangtan
- P. R. China
| | - Shuang-Feng Yin
- State Key Laboratory of Chemo/Biosensing and Chemometrics
- College of Chemistry and Chemical Engineering
- Hunan University
- Changsha 410082
- P. R. China
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