1
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Zhao JH, Zheng L, Zou JY, Zhang SY, Shen HC, Wu Y, Wang P. Construction of Si-Stereogenic Silanols by Palladium-Catalyzed Enantioselective C-H Alkenylation. Angew Chem Int Ed Engl 2024; 63:e202402612. [PMID: 38410071 DOI: 10.1002/anie.202402612] [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: 02/05/2024] [Revised: 02/26/2024] [Accepted: 02/26/2024] [Indexed: 02/28/2024]
Abstract
The construction of silicon-stereogenic silanols via Pd-catalyzed intermolecular C-H alkenylation with the assistance of a commercially available L-pyroglutamic acid has been realized for the first time. Employing oxime ether as the directing group, silicon-stereogenic silanol derivatives could be readily prepared with excellent enantioselectivities, featuring a broad substrate scope and good functional group tolerance. Moreover, parallel kinetic resolution with unsymmetric substrates further highlighted the generality of this protocol. Mechanistic studies indicate that L-pyroglutamic acid could stabilize the Pd catalyst and provide excellent chiral induction. Preliminary computational studies unveil the origin of the enantioselectivity in the C-H bond activation step.
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Affiliation(s)
- Jia-Hui Zhao
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, CAS, 345 Lingling Road, Shanghai, 200032, China
- School of Physical Science and Technology, ShanghaiTech University, Shanghai, 201210, China
| | - Long Zheng
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, CAS, 345 Lingling Road, Shanghai, 200032, China
| | - Jian-Ye Zou
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, CAS, 345 Lingling Road, Shanghai, 200032, China
| | - Sheng-Ye Zhang
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, CAS, 345 Lingling Road, Shanghai, 200032, China
| | - Hua-Chen Shen
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, CAS, 345 Lingling Road, Shanghai, 200032, China
| | - Yichen Wu
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, CAS, 345 Lingling Road, Shanghai, 200032, China
| | - Peng Wang
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, CAS, 345 Lingling Road, Shanghai, 200032, China
- School of Chemistry and Material Sciences, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou, 310024, China
- College of Material, Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education, Hangzhou Normal University, Hangzhou, 311121, Zhejiang, China
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2
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Xu X, Gao A, Chen W, Xu X, Li J, Cui C. Lanthanum Ate Amide-Catalyzed Regio- and Stereoselective Hydrosilylation of Internal Alkynes. ACS Catal 2023. [DOI: 10.1021/acscatal.2c06100] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/06/2023]
Affiliation(s)
- Xiaoming Xu
- State Key Laboratory of Elemento-Organic Chemistry and College of Chemistry, Nankai University, Tianjin 300071, People’s Republic of China
| | - Ailin Gao
- State Key Laboratory of Elemento-Organic Chemistry and College of Chemistry, Nankai University, Tianjin 300071, People’s Republic of China
| | - Wufeng Chen
- State Key Laboratory of Elemento-Organic Chemistry and College of Chemistry, Nankai University, Tianjin 300071, People’s Republic of China
| | - Xiufang Xu
- State Key Laboratory of Elemento-Organic Chemistry and College of Chemistry, Nankai University, Tianjin 300071, People’s Republic of China
| | - Jianfeng Li
- State Key Laboratory of Elemento-Organic Chemistry and College of Chemistry, Nankai University, Tianjin 300071, People’s Republic of China
| | - Chunming Cui
- State Key Laboratory of Elemento-Organic Chemistry and College of Chemistry, Nankai University, Tianjin 300071, People’s Republic of China
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3
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Gao J, He C. Chiral Silanols: Strategies and Tactics for Their Synthesis. Chemistry 2023; 29:e202203475. [PMID: 36617499 DOI: 10.1002/chem.202203475] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2022] [Revised: 01/05/2023] [Accepted: 01/08/2023] [Indexed: 01/10/2023]
Abstract
Silanols are valuable and important compounds, which have found widespread applications in the field of materials science, synthetic chemistry, and medicinal chemistry. Although a handful of approaches have been developed for the synthesis of various silanols, access to enantioenriched silicon-stereogenic silanols remains underdeveloped. This Concept article intends to summarize and highlight recent advances in the construction of silicon-stereogenic silanols and endeavors to encourage further research in this area.
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Affiliation(s)
- Jihui Gao
- Shenzhen Grubbs Institute and Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen, Guangdong, 518055, P. R. China
| | - Chuan He
- Shenzhen Grubbs Institute and Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen, Guangdong, 518055, P. R. China.,Key Laboratory of Organosilicon Chemistry, and Material Technology of Ministry of Education, Hangzhou Normal University, Hangzhou, 311121, P. R. China
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4
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Yuan W, Zhu X, Xu Y, He C. Synthesis of Si‐Stereogenic Silanols by Catalytic Asymmetric Hydrolytic Oxidation. Angew Chem Int Ed Engl 2022; 61:e202204912. [DOI: 10.1002/anie.202204912] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2022] [Indexed: 12/21/2022]
Affiliation(s)
- Wei Yuan
- Shenzhen Grubbs Institute and Department of Chemistry Guangdong Provincial Key Laboratory of Catalysis Southern University of Science and Technology Shenzhen Guangdong 518055 China
| | - Xujiang Zhu
- Shenzhen Grubbs Institute and Department of Chemistry Guangdong Provincial Key Laboratory of Catalysis Southern University of Science and Technology Shenzhen Guangdong 518055 China
| | - Yankun Xu
- Shenzhen Grubbs Institute and Department of Chemistry Guangdong Provincial Key Laboratory of Catalysis Southern University of Science and Technology Shenzhen Guangdong 518055 China
| | - Chuan He
- Shenzhen Grubbs Institute and Department of Chemistry Guangdong Provincial Key Laboratory of Catalysis Southern University of Science and Technology Shenzhen Guangdong 518055 China
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5
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Gao J, Mai PL, Ge Y, Yuan W, Li Y, He C. Copper-Catalyzed Desymmetrization of Prochiral Silanediols to Silicon-Stereogenic Silanols. ACS Catal 2022. [DOI: 10.1021/acscatal.2c02482] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Jihui Gao
- School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin, 150080, China
- Shenzhen Grubbs Institute and Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen, Guangdong 518055, China
| | - Pei-Lin Mai
- Shenzhen Grubbs Institute and Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen, Guangdong 518055, China
| | - Yicong Ge
- Shenzhen Grubbs Institute and Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen, Guangdong 518055, China
- Sichuan Province Key Laboratory of Natural Products and Small Molecule Synthesis, School of New Energy Materials and Chemistry, Leshan Normal University, Leshan 614000, China
| | - Wei Yuan
- Shenzhen Grubbs Institute and Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen, Guangdong 518055, China
| | - Yingzi Li
- Shenzhen Institute of Advanced Technology, University of Chinese Academy of Sciences, Chinese Academy of Sciences Shenzhen, Guangdong 518055, China
| | - Chuan He
- Shenzhen Grubbs Institute and Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen, Guangdong 518055, China
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6
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Yuan W, Zhu X, Xu Y, He C. Synthesis of Si‐Stereogenic Silanols by Catalytic Asymmetric Hydrolytic Oxidation. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202204912] [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)
- Wei Yuan
- Southern University of Science and Technology Chemistry CHINA
| | - Xujiang Zhu
- Southern University of Science and Technology Chemistry CHINA
| | - Yankun Xu
- Southern University of Science and Technology Chemistry CHINA
| | - Chuan He
- Southern University of Science and Technology Chemistry No 1088,xueyuan Rd.Xili, Nanshan District 518055 Shenzhen CHINA
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7
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Fontana N, Espinosa-Jalapa NA, Seidl M, Bauer JO. Hidden silylium-type reactivity of a siloxane-based phosphonium-hydroborate ion pair. Chem Commun (Camb) 2022; 58:2144-2147. [PMID: 35050278 DOI: 10.1039/d1cc07016a] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A new class of siloxane-based cations with hidden silylium-type reactivity is provided, which, in combination with an arylborate counteranion, initiates a highly selective para-C(sp2)-F defunctionalization of a perfluorinated aryl group. The hydrodefluorinated aryl borane is obtained as a crystalline solid via continuous sublimation during the reaction. The heterocyclic six-membered cation could be obtained single-crystalline after dehydrogenative anion exchange. DFT calculations give insight into the bonding within the siloxane-based cation and the mechanism of the ion pair reaction.
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Affiliation(s)
- Nicolò Fontana
- Institut für Anorganische Chemie, Fakultät für Chemie und Pharmazie, Universität Regensburg, Universitätsstraße 31, Regensburg D-93053, Germany.
| | - Noel Angel Espinosa-Jalapa
- Institut für Anorganische Chemie, Fakultät für Chemie und Pharmazie, Universität Regensburg, Universitätsstraße 31, Regensburg D-93053, Germany.
| | - Michael Seidl
- Institut für Anorganische Chemie, Fakultät für Chemie und Pharmazie, Universität Regensburg, Universitätsstraße 31, Regensburg D-93053, Germany.
| | - Jonathan O Bauer
- Institut für Anorganische Chemie, Fakultät für Chemie und Pharmazie, Universität Regensburg, Universitätsstraße 31, Regensburg D-93053, Germany.
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8
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Kondo SI, Okada N, Abe S, Tanaka R, Yamamura M, Unno M. Anion recognition by silanetriol in acetonitrile. Org Biomol Chem 2022; 20:8925-8931. [DOI: 10.1039/d2ob01596j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Anion recognition ability and organocatalytic activity of a silanetriol are firstly presented by comparing with those of a series of silanol derivatives.
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Affiliation(s)
- Shin-ichi Kondo
- Department of Chemistry, Faculty of Science, Yamagata University, Yamagata 990-8560, Japan
| | - Natsumi Okada
- Department of Chemistry and Chemical Biology, Graduate School of Science and Technology, Gunma University, Kiryu, Gunma 376-8515, Japan
| | - Shiori Abe
- Department of Chemistry, Faculty of Science, Yamagata University, Yamagata 990-8560, Japan
| | - Ryoji Tanaka
- Department of Chemistry and Chemical Biology, Graduate School of Science and Technology, Gunma University, Kiryu, Gunma 376-8515, Japan
- Sagami Chemical Research Institute, Hayakawa 2743-1, Ayase, Kanagawa 252-1193, Japan
| | - Masaki Yamamura
- Department of Chemistry and Chemical Biology, Graduate School of Science and Technology, Gunma University, Kiryu, Gunma 376-8515, Japan
- Faculty of Engineering, Toyama Prefectural University, 5180 Kurokawa, Imizu, Toyama 939-0398, Japan
| | - Masafumi Unno
- Department of Chemistry and Chemical Biology, Graduate School of Science and Technology, Gunma University, Kiryu, Gunma 376-8515, Japan
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9
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Park G, Gabbaï FP. The Elusive Au(I)···H-O Hydrogen Bond: Experimental Verification. J Am Chem Soc 2021; 143:12494-12498. [PMID: 34369751 DOI: 10.1021/jacs.1c07035] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
Our long-standing interest in atypical bonding situations has recently led us to target complexes in which a metallobasic gold(I) center is hydrogen-bonded to a nearby OH functionality. Here, we report on the synthesis and characterization of two neutral gold(I) indazol-3-ylidene complexes bearing a carbinol or silanol group at the 4-position. As indicated by X-ray diffraction, 1H NMR spectroscopy, IR spectroscopy, and extensive computational modeling, the OH group of these derivatives is engaged in a bona fide Au···H-O interaction. In addition to shedding light on an elusive bonding situation, these results also indicate that increasing the acidity of the OH functionality is not necessarily beneficial to the stability of the Au(I)···H-O interaction.
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Affiliation(s)
- Gyeongjin Park
- 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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10
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Goodwin RJ, Blyth MT, Fung AKK, Smith LM, Norcott PL, Tanovic S, Coote ML, White NG. Simple acyclic molecules containing a single charge-assisted O-H group can recognize anions in acetonitrile : water mixtures. Org Biomol Chem 2021; 19:2794-2803. [PMID: 33720236 DOI: 10.1039/d1ob00282a] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Hydroxypyridinium and hydroxyquinolinium compounds containing acidic O-H groups attached to a cationic aromatic scaffold were synthesized, i.e. N-methyl-3-hydroxypyridinium (1+) and N-methyl-8-hydroxyquinolinium (2+). These very simple compounds are capable of binding to chloride very strongly in CD3CN and with moderate strength in 9 : 1 CD3CN : D2O. Comparison with known association constants reveals that 1+ and 2+ bind chloride in CD3CN or CD3CN : D2O with comparable affinities to receptors containing significantly more hydrogen bond donors and/or higher positive charges. Crystal structures of both compounds with coordinating anions were obtained, and feature short O-Hanion hydrogen bonds. A receptor containing two hydroxyquinolinium groups was also prepared. While the low solubility of this compound caused difficulties, we were able to demonstrate chloride binding in a competitive 1 : 1 CD3CN : CD3OD solvent mixture. Addition of sulfate to this compound results in the formation of a crystallographically-characterised solid state anion coordination polymer.
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Affiliation(s)
- Rosemary J Goodwin
- Research School of Chemistry, Australian National University, Canberra, ACT, Australia.
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11
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Hafner T, Torvisco A, Traxler M, Wolf M, Uhlig F. Selective Chlorination of Germanium Hydrides. Z Anorg Allg Chem 2020. [DOI: 10.1002/zaac.202000318] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Thomas Hafner
- Graz University of Technology Stremayrgasse 9/IV 8010 Graz Austria
| | - Ana Torvisco
- Graz University of Technology Stremayrgasse 9/IV 8010 Graz Austria
| | - Michael Traxler
- Graz University of Technology Stremayrgasse 9/IV 8010 Graz Austria
| | - Melanie Wolf
- Graz University of Technology Stremayrgasse 9/IV 8010 Graz Austria
| | - Frank Uhlig
- Graz University of Technology Stremayrgasse 9/IV 8010 Graz Austria
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12
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Jagannathan JR, Fettinger JC, Shaw JT, Franz AK. Enantioselective Si-H Insertion Reactions of Diarylcarbenes for the Synthesis of Silicon-Stereogenic Silanes. J Am Chem Soc 2020; 142:11674-11679. [PMID: 32539370 PMCID: PMC7747653 DOI: 10.1021/jacs.0c04533] [Citation(s) in RCA: 66] [Impact Index Per Article: 16.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
We report the first example of enantioselective, intermolecular diarylcarbene insertion into Si-H bonds for the synthesis of silicon-stereogenic silanes. Dirhodium(II) carboxylates catalyze an Si-H insertion using carbenes derived from diazo compounds where selective formation of an enantioenriched silicon center is achieved using prochiral silanes. Fourteen prochiral silanes were evaluated with symmetrical and prochiral diazo reactants to produce a total of 25 novel silanes. Adding an ortho substituent on one phenyl ring of a prochiral diazo enhances enantioselectivity up to 95:5 er with yields up to 98%. Using in situ IR spectroscopy, the impact of the off-cycle azine formation is supported based on the structural dependence for relative rates of diazo decomposition. A catalytic cycle is proposed with Si-H insertion as the rate-determining step, supported by kinetic isotope experiments. Transformations of an enantioenriched silane derived from this method, including selective synthesis of a novel sila-indane, are demonstrated.
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Affiliation(s)
- Jake R. Jagannathan
- Department of Chemistry, University of California, One Shields Avenue, Davis, California 95616, United States
| | - James C. Fettinger
- Department of Chemistry, University of California, One Shields Avenue, Davis, California 95616, United States
| | - Jared T. Shaw
- Department of Chemistry, University of California, One Shields Avenue, Davis, California 95616, United States
| | - Annaliese K. Franz
- Department of Chemistry, University of California, One Shields Avenue, Davis, California 95616, United States
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13
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Rabanzo-Castillo KM, Kumar VB, Söhnel T, Leitao EM. Catalytic Synthesis of Oligosiloxanes Mediated by an Air Stable Catalyst, (C 6F 5) 3B(OH 2). Front Chem 2020; 8:477. [PMID: 32656180 PMCID: PMC7325218 DOI: 10.3389/fchem.2020.00477] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2020] [Accepted: 05/08/2020] [Indexed: 12/29/2022] Open
Abstract
The utility of (C6F5)3B(OH2) as catalyst for the simple and environmentally benign synthesis of oligosiloxanes directly from hydrosilanes, is reported. This protocol offers several advantages compared to other methods of synthesizing siloxanes, such as mild reaction conditions, low catalyst loading, and a short reaction time with high yields and purity. The considerable H2O-tolerance of (C6F5)3B(OH2) promoted a catalytic route to disiloxanes which showed >99% conversion of three tertiary silanes, Et3SiH, PhMe2SiH, and Ph3SiH. Preliminary data on the synthesis of unsymmetrical disiloxanes (Si-O-Si') suggests that by modifying the reaction conditions and/or using a 1:1 combination of silane to silanol the cross-product can be favored. Intramolecular reactions of disilyl compounds with catalytic (C6F5)3B(OH2) led to the formation of novel bridged siloxanes, containing a Si-O-Si linkage within a cyclic structure, as the major product. Moreover, the reaction conditions enabled recovery and recycling of the catalyst. The catalyst was re-used 5 times and demonstrated excellent conversion for each substrate at 1.0 mol% catalyst loading. This seemingly simple reaction has a rather complicated mechanism. With the hydrosilane (R3SiH) as the sole starting material, the fate of the reaction largely depends on the creation of silanol (R3SiOH) from R3SiH as these two undergo dehydrocoupling to yield a disiloxane product. Generation of the silanol is based on a modified Piers-Rubinsztajn reaction. Once the silanol has been produced, the mechanism involves a series of competitive reactions with multiple catalytically relevant species involving water, silane, and silanol interacting with the Lewis acid and the favored reaction cycle depends on the concentration of various species in solution.
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Affiliation(s)
- Kristel M Rabanzo-Castillo
- School of Chemical Sciences, University of Auckland, Auckland, New Zealand.,The MacDiarmid Institute for Advanced Materials and Nanotechnology, Auckland, New Zealand
| | - Vipin B Kumar
- School of Chemical Sciences, University of Auckland, Auckland, New Zealand.,The MacDiarmid Institute for Advanced Materials and Nanotechnology, Auckland, New Zealand
| | - Tilo Söhnel
- School of Chemical Sciences, University of Auckland, Auckland, New Zealand.,The MacDiarmid Institute for Advanced Materials and Nanotechnology, Auckland, New Zealand
| | - Erin M Leitao
- School of Chemical Sciences, University of Auckland, Auckland, New Zealand.,The MacDiarmid Institute for Advanced Materials and Nanotechnology, Auckland, New Zealand
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14
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Morisue M, Kusukawa T, Watase S. Dipyrrin Complexes of Borasiloxane Silanols with Adaptive Hydrogen‐Bonded Conformations in the Crystal and in Solution States. Eur J Inorg Chem 2020. [DOI: 10.1002/ejic.202000118] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Mitsuhiko Morisue
- Faculty of Molecular Chemistry and Engineering Kyoto Institute of Technology Matsugasaki, Sakyo‐ku 606‐8585 Kyoto Japan
| | - Takahiro Kusukawa
- Faculty of Molecular Chemistry and Engineering Kyoto Institute of Technology Matsugasaki, Sakyo‐ku 606‐8585 Kyoto Japan
| | - Seiji Watase
- Osaka Research Institute of Industrial Science and Technology 1‐6‐50, Morinomiya, Joto‐ku 536‐8553 Osaka Japan
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15
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Espinosa‐Jalapa NA, Bauer JO. Controlled Synthesis and Molecular Structures of Methoxy‐, Amino‐, and Chloro‐Functionalized Disiloxane Building Blocks. Z Anorg Allg Chem 2020. [DOI: 10.1002/zaac.202000049] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Noel Angel Espinosa‐Jalapa
- Institut für Anorganische Chemie Fakultät für Chemie und Pharmazie Universität Regensburg Universitätsstraße 31 93053 Regensburg Germany
| | - Jonathan O. Bauer
- Institut für Anorganische Chemie Fakultät für Chemie und Pharmazie Universität Regensburg Universitätsstraße 31 93053 Regensburg Germany
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16
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Shankar R, Mahavar N. A catalytic study of water dispersed gold nanoparticles for the hydrolytic oxidation of diorganosilanes – en route formation of a Pickering catalyst and synthesis of tetraorganodisiloxane-1,3-diols. Dalton Trans 2020; 49:16633-16637. [DOI: 10.1039/d0dt03252b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This study unfolds the formation of a AuNP-stabilized Pickering catalyst (PIC) en route to the hydrolytic oxidation of diorganosilanes. The method offers a viable route for the synthesis of disiloxane-1,3-diols.
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Affiliation(s)
- Ravi Shankar
- Department of Chemistry
- Indian Institute of Technology Delhi
- New Delhi
- India
| | - Nidhi Mahavar
- Department of Chemistry
- Indian Institute of Technology Delhi
- New Delhi
- India
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17
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Jagannathan JR, Diemoz KM, Targos K, Fettinger JC, Franz AK. Kinetic and Binding Studies Reveal Cooperativity and Off-Cycle Competition for H-Bonding Catalysis with Silsesquioxane Silanols. Chemistry 2019; 25:14953-14958. [PMID: 31448459 DOI: 10.1002/chem.201903693] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2019] [Indexed: 01/23/2023]
Abstract
The catalytic activity, kinetics, and quantification of H-bonding ability of incompletely condensed polyhedral oligomeric silsesquioxane (POSS) silanols are reported. POSS-triols, a homogeneous model for vicinal silica surface sites, exhibit enhanced H-bonding compared with other silanols and alcohols as quantified using a 31 P NMR probe. Evaluation of a Friedel-Crafts addition reaction shows that phenyl-POSS-triol is active as an H-bond donor catalyst whereas other POSS silanols studied are not. An in-depth kinetic study (using RPKA and VTNA) highlights the concentration-dependent H-bonding behavior of POSS-triols, which is attributed to intermolecular association forming an off-cycle dimeric species. Binding constants provide additional support for reduced H-bond ability at higher concentrations, which is attributed to competitive association. POSS-triol self-association disrupts H-bond donor abilities relevant for catalysis by reducing the concentration of active monomeric catalyst.
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Affiliation(s)
- Jake R Jagannathan
- Department of Chemistry, University of California, Davis, One Shields Avenue, Davis, CA, USA
| | - Kayla M Diemoz
- Department of Chemistry, University of California, Davis, One Shields Avenue, Davis, CA, USA
| | - Karina Targos
- Department of Chemistry, University of California, Davis, One Shields Avenue, Davis, CA, USA
| | - James C Fettinger
- Department of Chemistry, University of California, Davis, One Shields Avenue, Davis, CA, USA
| | - Annaliese K Franz
- Department of Chemistry, University of California, Davis, One Shields Avenue, Davis, CA, USA
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18
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Boer SA, Foyle EM, Thomas CM, White NG. Anion coordination chemistry using O-H groups. Chem Soc Rev 2019; 48:2596-2614. [PMID: 30860210 DOI: 10.1039/c8cs00828k] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
This review covers significant advances in the use of O-H groups in anion coordination chemistry. The review focuses on the use of these groups in synthetic anion receptors, as well as more recent developments in transport, self-assembly and catalysis.
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Affiliation(s)
- Stephanie A Boer
- Research School of Chemistry, The Australian National University, Canberra, Australia.
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19
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Kelly A, Franz AK. Metal-Free Synthesis of 1,3-Disiloxanediols and Aryl Siloxanols. ACS OMEGA 2019; 4:6295-6300. [PMID: 31459769 PMCID: PMC6648610 DOI: 10.1021/acsomega.9b00121] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/14/2019] [Accepted: 03/20/2019] [Indexed: 05/28/2023]
Abstract
The first example of metal-free oxidative hydrolysis of hydrido-siloxanes is reported. Both base-catalyzed and organocatalytic hydrolysis methods are demonstrated to transform 1,3-dihydrido-disiloxanes into 1,3-disiloxanediols. The first example of a chemoselective silane hydrolysis is demonstrated.
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Diemoz KM, Franz AK. NMR Quantification of Hydrogen-Bond-Activating Effects for Organocatalysts including Boronic Acids. J Org Chem 2018; 84:1126-1138. [PMID: 30516381 DOI: 10.1021/acs.joc.8b02389] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The hydrogen-bonding activation for 66 organocatalysts has been quantified using a 31P NMR binding experiment with triethylphosphine oxide (TEPO). Diverse structural classes, including phenols, diols, silanols, carboxylic acids, boronic acids, and phosphoric acids, were examined with a variety of steric and electronic modifications to understand how the structure and secondary effects contribute to hydrogen-bonding ability and catalysis. Hammett plots demonstrate high correlation for the Δδ 31P NMR shift to Hammett parameters, establishing the ability of TEPO binding to predict electronic trends. Upon correlation to catalytic activity in a Friedel-Crafts addition reaction, data demonstrate that 31P NMR shifts correlate to catalytic activity better than p Ka values. Boronic acids were investigated, and 31P NMR binding experiments predicted strong hydrogen-bonding ability, for which catalytic activity was confirmed, resulting in the greatest rate enhancement observed in the Friedel-Crafts addition of all organocatalysts studied. A detailed investigation supports that boronic acid activation proceeds through hydrogen-bonding interactions and not coordination with the Lewis acidic boron center. Using 31P NMR spectroscopy offers a simple and rapid tool to quantify and predict hydrogen-bonding abilities for the design and applications of new organocatalysts and supramolecular synthons.
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Affiliation(s)
- Kayla M Diemoz
- Department of Chemistry , University of California , One Shields Avenue , Davis , California 95616 , United States
| | - Annaliese K Franz
- Department of Chemistry , University of California , One Shields Avenue , Davis , California 95616 , United States
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21
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Brząkalski D, Walczak M, Duszczak J, Dudziec B, Marciniec B. Chlorine-Free Catalytic Formation of Silsesquioxanes with Si-OH and Si-OR Functional Groups. Eur J Inorg Chem 2018. [DOI: 10.1002/ejic.201800582] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Dariusz Brząkalski
- Faculty of Chemistry; Adam Mickiewicz University in Poznan; Umultowska 89B 61-614 Poznan Poland
- Centre for Advanced Technologies; Adam Mickiewicz University in Poznan; Umultowska 89C 61-614 Poznan Poland
| | - Marcin Walczak
- Faculty of Chemistry; Adam Mickiewicz University in Poznan; Umultowska 89B 61-614 Poznan Poland
- Centre for Advanced Technologies; Adam Mickiewicz University in Poznan; Umultowska 89C 61-614 Poznan Poland
| | - Julia Duszczak
- Faculty of Chemistry; Adam Mickiewicz University in Poznan; Umultowska 89B 61-614 Poznan Poland
- Centre for Advanced Technologies; Adam Mickiewicz University in Poznan; Umultowska 89C 61-614 Poznan Poland
| | - Beata Dudziec
- Faculty of Chemistry; Adam Mickiewicz University in Poznan; Umultowska 89B 61-614 Poznan Poland
- Centre for Advanced Technologies; Adam Mickiewicz University in Poznan; Umultowska 89C 61-614 Poznan Poland
| | - Bogdan Marciniec
- Faculty of Chemistry; Adam Mickiewicz University in Poznan; Umultowska 89B 61-614 Poznan Poland
- Centre for Advanced Technologies; Adam Mickiewicz University in Poznan; Umultowska 89C 61-614 Poznan Poland
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23
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Chen CH, Gabbaï FP. Exploiting the Strong Hydrogen Bond Donor Properties of a Borinic Acid Functionality for Fluoride Anion Recognition. Angew Chem Int Ed Engl 2017; 57:521-525. [DOI: 10.1002/anie.201709494] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2017] [Indexed: 12/18/2022]
Affiliation(s)
- Chang-Hong Chen
- 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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Chen CH, Gabbaï FP. Exploiting the Strong Hydrogen Bond Donor Properties of a Borinic Acid Functionality for Fluoride Anion Recognition. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201709494] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Chang-Hong Chen
- 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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25
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Roesch P, Warzok U, Enke M, Müller R, Schattenberg C, Schalley CA, Kaupp M, Braun T, Wittwer P. Reactivity of the Sterically Demanding Siloxanediol Mes 2 Si(OH)(μ-O)Si(OH)Mes 2 Towards Water and Ether Molecules. Chemistry 2017; 23:13964-13972. [PMID: 28755523 DOI: 10.1002/chem.201702393] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2017] [Indexed: 11/05/2022]
Abstract
A series of isotopologues of the siloxanediol Mes2 Si(OH)(μ-O)Si(OH)Mes2 (3 a) (Mes=2,4,6-trimethylphenyl) were synthesized by reactions of the corresponding disiloxane precursors Mes2 Si(μ-O)2 SiMes2 (2 a), Mes2 Si(μ-17 O)2 SiMes2 (2 b) or Mes2 Si(μ-18 O)2 SiMes2 (2 c) with an excess of H2 O, H217 O or H218 O. NMR and IR signal assignments for the siloxanediols in benzene are supported by quantum-chemical calculations, which indicate small energy differences between trans and cis conformers, the latter of which exhibits an intramolecular hydrogen bond. 1 H NMR as well as IR data suggest the presence of a mixture of both conformers in C6 D6 . Hydrogen-bonded adducts of Mes2 Si(OH)(μ-O)Si(OH)Mes2 with ethers such as diethylether, dimethoxyethane or dioxane were observed in the solid state, where they form polymeric chain-like structures. The latter appear to be stable only in the crystal. 17 O{1 H} NMR and IR data in THF solution suggest an interaction of 3 a with at least one THF molecule, whereas diethylether appears not to interact. Water adducts form neither in solution nor in the solid state as indicated by NMR and ATR IR data. 17 O{1 H} NMR and ESI-MS experiments illustrate the remarkably high stability of the siloxanediols towards water and show no evidence for intra- or intermolecular oxygen-exchange reactions. In marked contrast, a stepwise exchange of all three oxygen atoms-including the one in the Si-O-Si bridge-occurred in the gas phase, when [Mes2 Si(18 OH)(μ-18 O)Si(18 O)Mes2 ]- was treated with H2 O in the hexapole of an ESI FT-ICR mass spectrometer. The scrambling between the bridging and the other oxygen atoms likely proceeds through cyclic Si2 O2 intermediates.
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Affiliation(s)
- Philipp Roesch
- Department of Chemistry, Humboldt Universität zu Berlin, Brook-Taylor-Straße 2, 12489, Berlin, Germany
| | - Ulrike Warzok
- Institut für Chemie und Biochemie, Freie Universität Berlin, Takustraße 3, 14195, Berlin, Germany
| | - Martin Enke
- Institut für Chemie, Technische Universität Berlin, Theoretische Chemie/Quantenchemie, Sekr. C7, Straße des 17. Juni 135, 10623, Berlin, Germany
| | - Robert Müller
- Institut für Chemie, Technische Universität Berlin, Theoretische Chemie/Quantenchemie, Sekr. C7, Straße des 17. Juni 135, 10623, Berlin, Germany
| | - Caspar Schattenberg
- Institut für Chemie, Technische Universität Berlin, Theoretische Chemie/Quantenchemie, Sekr. C7, Straße des 17. Juni 135, 10623, Berlin, Germany
| | - Christoph A Schalley
- Institut für Chemie und Biochemie, Freie Universität Berlin, Takustraße 3, 14195, Berlin, Germany
| | - Martin Kaupp
- Institut für Chemie, Technische Universität Berlin, Theoretische Chemie/Quantenchemie, Sekr. C7, Straße des 17. Juni 135, 10623, Berlin, Germany
| | - Thomas Braun
- Department of Chemistry, Humboldt Universität zu Berlin, Brook-Taylor-Straße 2, 12489, Berlin, Germany
| | - Philipp Wittwer
- Department of Chemistry, Humboldt Universität zu Berlin, Brook-Taylor-Straße 2, 12489, Berlin, Germany
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Eichstaedt K, Jaramillo-Garcia J, Leigh DA, Marcos V, Pisano S, Singleton TA. Switching between Anion-Binding Catalysis and Aminocatalysis with a Rotaxane Dual-Function Catalyst. J Am Chem Soc 2017. [DOI: 10.1021/jacs.7b04955] [Citation(s) in RCA: 80] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Katarzyna Eichstaedt
- School of Chemistry, University of Manchester, Oxford Road, Manchester M13 9PL, U.K
| | | | - David A. Leigh
- School of Chemistry, University of Manchester, Oxford Road, Manchester M13 9PL, U.K
| | - Vanesa Marcos
- School of Chemistry, University of Manchester, Oxford Road, Manchester M13 9PL, U.K
| | - Simone Pisano
- School of Chemistry, University of Manchester, Oxford Road, Manchester M13 9PL, U.K
| | - Thomas A. Singleton
- School of Chemistry, University of Manchester, Oxford Road, Manchester M13 9PL, U.K
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Diemoz KM, Hein JE, Wilson SO, Fettinger JC, Franz AK. Reaction Progress Kinetics Analysis of 1,3-Disiloxanediols as Hydrogen-Bonding Catalysts. J Org Chem 2017; 82:6738-6747. [DOI: 10.1021/acs.joc.7b00875] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Kayla M. Diemoz
- Department
of Chemistry, University of California, One Shields Avenue, Davis, California 95616, United States
| | - Jason E. Hein
- Department
of Chemistry, University of British Columbia, 2036 Main Mall, Vancouver, BC Canada, V6T1Z1
| | - Sean O. Wilson
- Department
of Chemistry, University of California, One Shields Avenue, Davis, California 95616, United States
| | - James C. Fettinger
- Department
of Chemistry, University of California, One Shields Avenue, Davis, California 95616, United States
| | - Annaliese K. Franz
- Department
of Chemistry, University of California, One Shields Avenue, Davis, California 95616, United States
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