1
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Hitoshio K, Maeda H, Teranishi K, Shimokawa J, Yorimitsu H. Synthesis of unsymmetrical dialkoxydiarylsilanes and diarylsilanediols from tetraalkoxysilane having a dioxasilepane unit. Chem Commun (Camb) 2024; 60:7339-7342. [PMID: 38916043 DOI: 10.1039/d4cc02051k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/26/2024]
Abstract
The tetraalkoxysilane carrying a stable seven-membered dioxasilepane moiety and two trifluoroethoxy groups undergoes reliable iterative substitution of the two trifluoroethoxy groups by sequential treatment with different aryl Grignard reagents while keeping the seven-membered structure intact. The process results in the synthesis of unsymmetrical dialkoxydiarylsilanes and eventually diarylsilanediols after proper hydrolysis.
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Affiliation(s)
- Kenshiro Hitoshio
- Department of Chemistry Graduate School of Science, Kyoto University Sakyo-ku, Kyoto 606-8502, Japan.
| | - Hiroki Maeda
- Department of Chemistry Graduate School of Science, Kyoto University Sakyo-ku, Kyoto 606-8502, Japan.
| | - Kento Teranishi
- Department of Chemistry Graduate School of Science, Kyoto University Sakyo-ku, Kyoto 606-8502, Japan.
| | - Jun Shimokawa
- Department of Chemistry Graduate School of Science, Kyoto University Sakyo-ku, Kyoto 606-8502, Japan.
| | - Hideki Yorimitsu
- Department of Chemistry Graduate School of Science, Kyoto University Sakyo-ku, Kyoto 606-8502, Japan.
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2
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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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3
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Dalton J, Bernal Sánchez A, Kelly AT, Fettinger JC, Franz AK. Organocatalytic Asymmetric Synthesis of Si-Stereogenic Siloxanols. ACS Catal 2024; 14:1005-1012. [PMID: 38269039 PMCID: PMC10804373 DOI: 10.1021/acscatal.3c03932] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2023] [Revised: 12/06/2023] [Accepted: 12/07/2023] [Indexed: 01/26/2024]
Abstract
We report the organocatalytic synthesis of Si-stereogenic compounds via desymmetrization of a prochiral silanediol with a chiral imidazole-containing catalyst. This metal-free silylation method affords high yields with enantioselectivity up to 98:2 for various silanediol and silyl chloride substrate combinations (including secondary alkyl, vinyl, and H groups), accessing products with potential for further elaboration. NMR and X-ray studies reveal insight into the H-bonding interactions between the imidazole organocatalyst and the silanediol and the dual activating role of the Lewis basic imidazole to account for the high enantioselectivity.
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Affiliation(s)
- Jacob
J. Dalton
- Department of Chemistry, University of California Davis, One Shields Ave, Davis, California 95616, United States
| | - Adilene Bernal Sánchez
- Department of Chemistry, University of California Davis, One Shields Ave, Davis, California 95616, United States
| | - Austin T. Kelly
- Department of Chemistry, University of California Davis, One Shields Ave, Davis, California 95616, United States
| | - James C. Fettinger
- Department of Chemistry, University of California Davis, One Shields Ave, Davis, California 95616, United States
| | - Annaliese K. Franz
- Department of Chemistry, University of California Davis, One Shields Ave, Davis, California 95616, United States
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4
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Joshi H, Thomas AA, Mague JT, Sathyamoorthi S. Dancing Silanols: Stereospecific Rearrangements of Silanol Epoxides into Silanoxy-Tetrahydrofurans and Silanoxy-Tetrahydropyrans. Org Chem Front 2023; 10:2556-2562. [PMID: 38037597 PMCID: PMC10688609 DOI: 10.1039/d3qo00427a] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2023]
Abstract
We have developed highly stereospecific rearrangements of silanol epoxides into 1'-silanoxy-tetrahydrofurans and 1'-silanoxy-tetrahydropyrans. Upon treatment with Ph3CBF4 and NaHCO3 in CH2Cl2, di-substituted trans-epoxide silanols rearrange into products with an erythro configuration; di-substituted cis-epoxide silanols give products with a threo configuration. We have used these reactions as key steps in the syntheses of (±)-solerone and (±)-muricatacin.
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Affiliation(s)
- Harshit Joshi
- University of Kansas, Department of Medicinal Chemistry, Lawrence, KS, USA (66047)
| | - Annu Anna Thomas
- University of Kansas, Department of Medicinal Chemistry, Lawrence, KS, USA (66047)
| | - Joel T Mague
- Tulane University, Department of Chemistry, New Orleans, LA, USA (70118)
| | - Shyam Sathyamoorthi
- University of Kansas, Department of Medicinal Chemistry, Lawrence, KS, USA (66047)
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5
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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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6
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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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7
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Langenohl F, Rösler J, Zühlke S, Kirchhoff J, Strohmann C. A Silicon-Stereogenic Silanol - 18 O-Isotope Labeling and Stereogenic Probe Reveals Hidden Stereospecific Water Exchange Reaction. Chemistry 2023; 29:e202202935. [PMID: 36166278 PMCID: PMC10100314 DOI: 10.1002/chem.202202935] [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: 09/20/2022] [Indexed: 01/04/2023]
Abstract
A silicon-stereogenic aminosilanol was isolated in excellent diastereomeric ratio and the absolute configuration was determined. The silanol is configurative and condensation stable in solution and shows stereoselective transformations with a clean stereospecific pathway in follow-up reactions, which leads to the isolation of a silicon-stereogenic zinc complex and siloxane compounds. Investigations with 18 O-labelled water and mass spectrometry analysis revealed an otherwise hidden exchange of oxygen atoms of silanol and water in solution that proceeds with retention of the configuration at the silicon center. This novel combination of a stereochemical probe and isotopic labeling in a silicon-stereogenic compound opens new analytic possibilities to study stereochemical courses of reactions with the aid of chiral silanols mechanistically.
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Affiliation(s)
- Felix Langenohl
- Inorganic ChemistryTU Dortmund UniversityOtto-Hahn-Straße 6/6a44227DortmundGermany
| | - Jonas Rösler
- Center for Mass Spectrometry (CMS)TU Dortmund UniversityOtto-Hahn-Straße 6/6a44227DortmundGermany
| | - Sebastian Zühlke
- Center for Mass Spectrometry (CMS)TU Dortmund UniversityOtto-Hahn-Straße 6/6a44227DortmundGermany
| | - Jan‐Lukas Kirchhoff
- Inorganic ChemistryTU Dortmund UniversityOtto-Hahn-Straße 6/6a44227DortmundGermany
| | - Carsten Strohmann
- Inorganic ChemistryTU Dortmund UniversityOtto-Hahn-Straße 6/6a44227DortmundGermany
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8
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Ma X, Xu J, Liu C, Zhang D. DFT calculations rationalize regioselectivity and chemodivergence in nickel-catalyzed couplings of aldehyde, alkyne, and dialkylsilane/trialkylsilane. MOLECULAR CATALYSIS 2022. [DOI: 10.1016/j.mcat.2022.112618] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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9
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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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10
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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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11
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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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12
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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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13
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Guo P, Cheng LC, He X, Ye KY. Cobalt-catalyzed highly selective hydroxylation of organohydrosilanes and hydrosiloxanes. Org Chem Front 2022. [DOI: 10.1039/d2qo01294d] [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
The highly selective and scalable dehydrogenative hydroxylation of hydrosilanes, featuring a low loading of the Earth-abundant cobalt catalyst, water as the green oxidant, and good generality for various hydrosilanes, is reported.
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Affiliation(s)
- Peng Guo
- Key Laboratory of Molecule Synthesis and Function Discovery (Fujian Province University), College of Chemistry, Fuzhou University, Fuzhou 350108, China
| | - Ling-Chao Cheng
- Key Laboratory of Molecule Synthesis and Function Discovery (Fujian Province University), College of Chemistry, Fuzhou University, Fuzhou 350108, China
| | - Xinglei He
- Key Laboratory of Molecule Synthesis and Function Discovery (Fujian Province University), College of Chemistry, Fuzhou University, Fuzhou 350108, China
| | - Ke-Yin Ye
- Key Laboratory of Molecule Synthesis and Function Discovery (Fujian Province University), College of Chemistry, Fuzhou University, Fuzhou 350108, China
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14
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Kannengießer J, Briesenick M, Meier D, Huch V, Morgenstern B, Kickelbick G. Synthesis and Hydrogen-Bond Patterns of Aryl-Group Substituted Silanediols and -triols from Alkoxy- and Chlorosilanes. Chemistry 2021; 27:16461-16476. [PMID: 34545975 PMCID: PMC9297978 DOI: 10.1002/chem.202102729] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2021] [Indexed: 12/01/2022]
Abstract
Organosilanols typically show a high condensation tendency and only exist as stable isolable molecules under very specific steric and electronic conditions at the silicon atom. In the present work, various novel representatives of this class of compounds were synthesized by hydrolysis of alkoxy- or chlorosilanes. Phenyl, 1-naphthyl, and 9-phenanthrenyl substituents at the silicon atom were applied to systematically study the influence of the aromatic substituents on the structure and reactivity of the compounds. Chemical shifts in 29 Si NMR spectroscopy in solution, correlated well with the expected electronic situation induced by the substitution pattern on the Si atom. 1 H NMR studies allowed the detection of strong intermolecular hydrogen bonds. Single-crystal X-ray structures of the alkoxides and the chlorosilanes are dominated by π-π interactions of the aromatic systems, which are substituted by strong hydrogen bonding interactions representing various structural motifs in the respective silanol structures.
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Affiliation(s)
- Jan‐Falk Kannengießer
- Inorganic Solid-State ChemistrySaarland University CampusBuilding C4 166123SaarbrückenGermany
| | - Max Briesenick
- Inorganic Solid-State ChemistrySaarland University CampusBuilding C4 166123SaarbrückenGermany
| | - Dennis Meier
- Inorganic Solid-State ChemistrySaarland University CampusBuilding C4 166123SaarbrückenGermany
| | - Volker Huch
- Inorganic Solid-State ChemistrySaarland University CampusBuilding C4 166123SaarbrückenGermany
| | - Bernd Morgenstern
- Inorganic Solid-State ChemistrySaarland University CampusBuilding C4 166123SaarbrückenGermany
| | - Guido Kickelbick
- Inorganic Solid-State ChemistrySaarland University CampusBuilding C4 166123SaarbrückenGermany
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15
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Li J, Xu D, Shi G, Liu X, Zhang J, Fan B. Oxidation of Silanes to Silanols with Oxygen via Photoredox Catalysis. ChemistrySelect 2021. [DOI: 10.1002/slct.202101241] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Jiayan Li
- Key Laboratory of Chemistry in Ethnic Medicinal Resources Yunnan Minzu University State Ethnic Affairs Commission & Ministry of Education Kunming 650500 China
| | - Dandan Xu
- Key Laboratory of Chemistry in Ethnic Medicinal Resources Yunnan Minzu University State Ethnic Affairs Commission & Ministry of Education Kunming 650500 China
| | - Guangrui Shi
- Key Laboratory of Chemistry in Ethnic Medicinal Resources Yunnan Minzu University State Ethnic Affairs Commission & Ministry of Education Kunming 650500 China
| | - Xingyuan Liu
- College of Biology and Chemistry Puer University Puer, Yunnan 665000 China
| | - Jianqiang Zhang
- College of Biology and Chemistry Puer University Puer, Yunnan 665000 China
| | - Baomin Fan
- Key Laboratory of Chemistry in Ethnic Medicinal Resources Yunnan Minzu University State Ethnic Affairs Commission & Ministry of Education Kunming 650500 China
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16
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Liang H, Wang LJ, Ji YX, Wang H, Zhang B. Selective Electrochemical Hydrolysis of Hydrosilanes to Silanols via Anodically Generated Silyl Cations. Angew Chem Int Ed Engl 2020; 60:1839-1844. [PMID: 33058450 DOI: 10.1002/anie.202010437] [Citation(s) in RCA: 40] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2020] [Indexed: 01/08/2023]
Abstract
The first electrochemical hydrolysis of hydrosilanes to silanols under mild and neutral reaction conditions is reported. The practical protocol employs commercially available and cheap NHPI as a hydrogen-atom transfer (HAT) mediator and operates at room temperature with high selectivity, leading to various valuable silanols in moderate to good yields. Notably, this electrochemical method exhibits a broad substrate scope and high functional-group compatibility, and it is applicable to late-stage functionalization of complex molecules. Preliminary mechanistic studies suggest that the reaction appears to proceed through a nucleophilic substitution reaction of an electrogenerated silyl cation with H2 O.
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Affiliation(s)
- Hao Liang
- State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing, 210009, China
| | - Lu-Jun Wang
- State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing, 210009, China
| | - Yun-Xing Ji
- State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing, 210009, China
| | - Han Wang
- State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing, 210009, China
| | - Bo Zhang
- State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing, 210009, China
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17
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Liang H, Wang L, Ji Y, Wang H, Zhang B. Selective Electrochemical Hydrolysis of Hydrosilanes to Silanols via Anodically Generated Silyl Cations. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202010437] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Hao Liang
- State Key Laboratory of Natural Medicines China Pharmaceutical University Nanjing 210009 China
| | - Lu‐Jun Wang
- State Key Laboratory of Natural Medicines China Pharmaceutical University Nanjing 210009 China
| | - Yun‐Xing Ji
- State Key Laboratory of Natural Medicines China Pharmaceutical University Nanjing 210009 China
| | - Han Wang
- State Key Laboratory of Natural Medicines China Pharmaceutical University Nanjing 210009 China
| | - Bo Zhang
- State Key Laboratory of Natural Medicines China Pharmaceutical University Nanjing 210009 China
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18
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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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19
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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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20
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21
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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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22
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Zhao W, Lv Y, Li J, Feng Z, Ni Y, Hadjichristidis N. Fast and selective organocatalytic ring-opening polymerization by fluorinated alcohol without a cocatalyst. Nat Commun 2019; 10:3590. [PMID: 31399569 PMCID: PMC6689068 DOI: 10.1038/s41467-019-11524-y] [Citation(s) in RCA: 50] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2019] [Accepted: 07/17/2019] [Indexed: 11/12/2022] Open
Abstract
Organocatalysis is an important branch of catalysis for various organic transformations and materials preparation. Polymerizations promoted by organic catalysts can produce polymeric materials without any metallic residues, providing charming materials for high-value and sensitive domains such as biomedical applications, microelectronic devices and food packaging. Herein, we describe a fluorinated alcohol based catalytic system for polypeptide synthesis via catalytic ring-opening polymerization (ROP) of α-amino acid N-carboxyanhydride (NCA), fulfilling cocatalyst free, metal free, high rate and high selectivity. During polymerization, the fluorinated alcohol catalyst forms multiple dynamic hydrogen bonds with the initiator, monomer and propagating polymer chain. These cooperative hydrogen bonding interactions activate the NCA monomers and simultaneously protect the overactive initiator/propagating polymer chain-ends, which offers the whole polymerization with high activity and selectivity. Mechanistic studies indicate a monocomponent-multifunctional catalytic mode of fluorinated alcohol. This finding provides a metal free and fast approach to access well-defined polypeptides. Polymerizations promoted by organic catalysts can produce polymeric materials without any metallic residues contamination. Here the authors show a fluorinated alcohol based catalytic system for polypeptide synthesis from α-amino acid N-carboxyanhydride, fulfilling cocatalyst and metal free conditions with high rate and selectivity.
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Affiliation(s)
- Wei Zhao
- College of Bioresources Chemical and Materials Engineering, Shaanxi University of Science and Technology, 710021, Xi'an, People's Republic of China.
| | - Yanfeng Lv
- College of Bioresources Chemical and Materials Engineering, Shaanxi University of Science and Technology, 710021, Xi'an, People's Republic of China
| | - Ji Li
- College of Bioresources Chemical and Materials Engineering, Shaanxi University of Science and Technology, 710021, Xi'an, People's Republic of China
| | - Zihao Feng
- College of Bioresources Chemical and Materials Engineering, Shaanxi University of Science and Technology, 710021, Xi'an, People's Republic of China
| | - Yonghao Ni
- Department of Chemical Engineering, University of New Brunswick, Fredericton, New Brunswick, E3B 5A3, Canada
| | - Nikos Hadjichristidis
- KAUST Catalysis Center, Polymer Synthesis Laboratory, Physical Sciences and Engineering Division, King Abdullah University of Science and Technology (KAUST), Thuwal, 23955, Saudi Arabia
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23
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Maji B. Stereoselective Haliranium, Thiiranium and Seleniranium Ion‐Triggered Friedel–Crafts‐Type Alkylations for Polyene Cyclizations. Adv Synth Catal 2019. [DOI: 10.1002/adsc.201900028] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Biswajit Maji
- Department of ChemistryIndira Gandhi National Tribal University Amarkantak – 484886 Madhya Pradesh India
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24
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Mesa KM, Hibbard HA, Franz AK. Sodium-Catalyzed Friedel–Crafts Reactions and Mechanistic Insight. Org Lett 2019; 21:3877-3881. [DOI: 10.1021/acs.orglett.9b00747] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Kelsey M. Mesa
- Department of Chemistry, University of California, One Shields Avenue, Davis, California 95616, United States
| | - Hailey A. Hibbard
- 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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25
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Saá JM, Lillo VJ, Mansilla J. Catalysis by Networks of Cooperative Hydrogen Bonds. NONCOVALENT INTERACTIONS IN CATALYSIS 2019. [DOI: 10.1039/9781788016490-00066] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
The main paradigm of today's chemistry is sustainability. In pursuing sustainability, we need to learn from chemical processes carried out by Nature and realize that Nature does not use either strong acids, or strong bases or fancy reagents to achieve outstanding chemical processes. Instead, enzyme activity leans on the cooperation of several chemical entities to avoid strong acids or bases or to achieve such an apparently simple goal as transferring a proton from an NuH unit to an E unit (NuH + E → Nu–EH). Hydrogen bond catalysis emerged strongly two decades ago in trying to imitate Nature and avoid metal catalysis. Now to mount another step in pursuing the goal of sustainability, the focus is upon cooperativity between the different players involved in catalysis. This chapter looks at the concept of cooperativity and, more specifically, (a) examines the role of cooperative hydrogen bonded arrays of the general type NuH⋯(NuH)n⋯NuH (i.e. intermolecular cooperativity) to facilitate general acid–base catalysis, not only in the solution phase but also under solvent-free and catalyst-free conditions, and, most important, (b) analyzes the capacity of designer chiral organocatalysts displaying intramolecular networks of cooperative hydrogen bonds (NCHBs) to facilitate enantioselective synthesis by bringing conformational rigidity to the catalyst in addition to simultaneously increasing the acidity of key hydrogen atoms so to achieve better complementarity in the highly polarized transition states.
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Affiliation(s)
- José M. Saá
- Department de Química, Universitat de les Illes Balears Crta. de Valldemossa km 7.5 07122 Palma de Mallorca Illes Balears Spain
| | - Victor J. Lillo
- Department de Química, Universitat de les Illes Balears Crta. de Valldemossa km 7.5 07122 Palma de Mallorca Illes Balears Spain
| | - Javier Mansilla
- Department de Química, Universitat de les Illes Balears Crta. de Valldemossa km 7.5 07122 Palma de Mallorca Illes Balears Spain
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26
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Feofanov MN, Averin AD, Beletskaya IP. Friedel–Crafts reaction of electron-rich (het)arenes with nitroalkenes. MENDELEEV COMMUNICATIONS 2019. [DOI: 10.1016/j.mencom.2019.03.005] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
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27
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Bhuyan P, Bhuyan AJ, Nyodu M, Chelleng N, Saikia L. Fe(OTf) 3: An Efficient Catalyst for Michael Addition Reactions of Homoaromatic C‐H Nucleophiles with Nitrostyrenes under Microwave Irradiation in Solvent‐Free Condition. ChemistrySelect 2019. [DOI: 10.1002/slct.201803497] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Pubanita Bhuyan
- Department of ChemistryRajiv Gandhi University Rono Hills; Doimukh Arunachal Pradesh- 791112
| | - Amar J. Bhuyan
- Department of ChemistryRajiv Gandhi University Rono Hills; Doimukh Arunachal Pradesh- 791112
| | - Mimik Nyodu
- Department of ChemistryRajiv Gandhi University Rono Hills; Doimukh Arunachal Pradesh- 791112
| | - Nilamoni Chelleng
- Department of ChemistryRajiv Gandhi University Rono Hills; Doimukh Arunachal Pradesh- 791112
| | - Lakhinath Saikia
- Department of ChemistryRajiv Gandhi University Rono Hills; Doimukh Arunachal Pradesh- 791112
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28
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Fox F, Neudörfl JM, Goldfuss B. Silanediol versus chlorosilanol: hydrolyses and hydrogen-bonding catalyses with fenchole-based silanes. Beilstein J Org Chem 2019; 15:167-186. [PMID: 30745992 PMCID: PMC6350884 DOI: 10.3762/bjoc.15.17] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2018] [Accepted: 12/22/2018] [Indexed: 01/01/2023] Open
Abstract
Biphenyl-2,2'-bisfenchyloxydichlorosilane (7, BIFOXSiCl2) is synthesized and employed as precursor for the new silanols biphenyl-2,2'-bisfenchyloxychlorosilanol (8, BIFOXSiCl(OH)) and biphenyl-2,2'-bisfenchyloxysilanediol (9, BIFOXSi(OH)2). BIFOXSiCl2 (7) shows a remarkable stability against hydrolysis, yielding silanediol 9 under enforced conditions. A kinetic study for the hydrolysis of dichlorosilane 7 shows a 263 times slower reaction compared to reference bis-(2,4,6-tri-tert-butylphenoxy)dichlorosilane (14), known for its low hydrolytic reactivity. Computational analyses explain the slow hydrolyses of BIFOXSiCl2 (7) to BIFOXSiCl(OH) (8, E a = 32.6 kcal mol-1) and BIFOXSiCl(OH) (8) to BIFOXSi(OH)2 (9, E a = 31.4 kcal mol-1) with high activation barriers, enforced by endo fenchone units. Crystal structure analyses of silanediol 9 with acetone show shorter hydrogen bonds between the Si-OH groups and the oxygen of the bound acetone (OH···O 1.88(3)-2.05(2) Å) than with chlorosilanol 8 (OH···2.16(0) Å). Due to its two hydroxy units, the silanediol 9 shows higher catalytic activity as hydrogen bond donor than chlorosilanol 8, e.g., C-C coupling N-acyl Mannich reaction of silyl ketene acetals 11 with N-acylisoquinolinium ions (up to 85% yield and 12% ee), reaction of 1-chloroisochroman (18) and silyl ketene acetals 11 (up to 85% yield and 5% ee), reaction of chromen-4-one (20) and silyl ketene acetals 11 (up to 98% yield and 4% ee).
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Affiliation(s)
- Falco Fox
- Department für Chemie, Institut für Organische Chemie, Greinstrasse 4, 50939 Köln, Germany
| | - Jörg M Neudörfl
- Department für Chemie, Institut für Organische Chemie, Greinstrasse 6, 50939 Köln, Germany
| | - Bernd Goldfuss
- Department für Chemie, Institut für Organische Chemie, Greinstrasse 4, 50939 Köln, Germany
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29
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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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30
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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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31
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Wang J, Li B, Liu LC, Jiang C, He T, He W. Metal-free visible-light-mediated aerobic oxidation of silanes to silanols. Sci China Chem 2018. [DOI: 10.1007/s11426-018-9289-9] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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32
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Hurkes N, Belaj F, Koe JR, Pietschnig R. Synthesis, structure and catalytic properties of bis[2-(trifluoromethyl)phenyl]silanediol. Appl Organomet Chem 2018. [DOI: 10.1002/aoc.4427] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Natascha Hurkes
- Institute of Chemistry and Center for Interdisciplinary Nanostructure Science and Technology (CINSaT); University of Kassel; Heinrich-Plett-Straße 40 34132 Kassel Germany
| | - Ferdinand Belaj
- Institute of Chemistry; Karl-Franzens-University; Schubertstraße 1 8010 Graz Austria
| | - Julian R. Koe
- Department of Natural Sciences; International Christian University; 3-10-2 Osawa Mitaka Tokyo 181-8585 Japan
| | - Rudolf Pietschnig
- Institute of Chemistry and Center for Interdisciplinary Nanostructure Science and Technology (CINSaT); University of Kassel; Heinrich-Plett-Straße 40 34132 Kassel Germany
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33
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Synthesis, characterization and catalytic oxidation of organosilanes with a novel multilayer polyoxomolybdate containing mixed-valence antimony. MOLECULAR CATALYSIS 2018. [DOI: 10.1016/j.mcat.2018.04.013] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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34
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Tang RJ, Milcent T, Crousse B. Friedel-Crafts alkylation reaction with fluorinated alcohols as hydrogen-bond donors and solvents. RSC Adv 2018; 8:10314-10317. [PMID: 35540471 PMCID: PMC9078892 DOI: 10.1039/c8ra01397g] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2018] [Accepted: 03/05/2018] [Indexed: 01/10/2023] Open
Abstract
An effective and clean FC alkylation of indoles and electron-rich arenes with β-nitroalkenes in HFIP was reported. The desired products are formed rapidly in excellent yields under mild conditions without the need for any additional catalysts or reagents. Further, this methodology can be applied to one-pot synthesis of biologically active tryptamine derivatives.
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Affiliation(s)
- Ren-Jin Tang
- Faculty of Pharmacy, UMR 8076, BioCIS, Univ. Paris-Sud, CNRS, Université Paris-Saclay 92290 Châtenay-Malabry France
| | - Thierry Milcent
- Faculty of Pharmacy, UMR 8076, BioCIS, Univ. Paris-Sud, CNRS, Université Paris-Saclay 92290 Châtenay-Malabry France
| | - Benoit Crousse
- Faculty of Pharmacy, UMR 8076, BioCIS, Univ. Paris-Sud, CNRS, Université Paris-Saclay 92290 Châtenay-Malabry France
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35
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Liu J, Chen W, Li J, Cui C. Rare-Earth-Catalyzed Regioselective Hydrosilylation of Aryl-Substituted Internal Alkenes. ACS Catal 2018. [DOI: 10.1021/acscatal.8b00010] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Jinxi Liu
- State
Key Laboratory of Elemento-Organic Chemistry, Nankai University, Tianjin 300071, China
| | - Wufeng Chen
- State
Key Laboratory of Elemento-Organic Chemistry, Nankai University, Tianjin 300071, China
| | - Jianfeng Li
- State
Key Laboratory of Elemento-Organic Chemistry, Nankai University, Tianjin 300071, China
| | - Chunming Cui
- State
Key Laboratory of Elemento-Organic Chemistry, Nankai University, Tianjin 300071, China
- Collaborative Innovation Center of Chemical Science and Engineering, Tianjin 300072, China
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36
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Tanaka K, Sakuragi K, Ozaki H, Takada Y. Highly enantioselective Friedel–Crafts alkylation of N,N-dialkylanilines with trans-β-nitrostyrene catalyzed by a homochiral metal–organic framework. Chem Commun (Camb) 2018; 54:6328-6331. [DOI: 10.1039/c8cc03447h] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
The first enantioselective Friedel–Crafts alkylation of N,N-dialkylanilines with trans-β-nitrostyrene catalyzed by a homochiral MOF afforded the addition products in high yields (∼96%) with excellent ee (∼98%).
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Affiliation(s)
- Koichi Tanaka
- Department of Chemistry and Materials Engineering
- Faculty of Chemistry
- Materials and Bioengineering
- Kansai University
- Suita
| | - Kenji Sakuragi
- Department of Chemistry and Materials Engineering
- Faculty of Chemistry
- Materials and Bioengineering
- Kansai University
- Suita
| | - Hiroto Ozaki
- Department of Chemistry and Materials Engineering
- Faculty of Chemistry
- Materials and Bioengineering
- Kansai University
- Suita
| | - Yoshiki Takada
- Department of Chemistry and Materials Engineering
- Faculty of Chemistry
- Materials and Bioengineering
- Kansai University
- Suita
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37
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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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38
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Fihri A, Len C, Varma RS, Solhy A. Hydroxyapatite: A review of syntheses, structure and applications in heterogeneous catalysis. Coord Chem Rev 2017. [DOI: 10.1016/j.ccr.2017.06.009] [Citation(s) in RCA: 251] [Impact Index Per Article: 35.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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39
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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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40
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Qiao X, Bao Z, Xing H, Yang Y, Ren Q, Zhang Z. Organocatalytic Approach for Transfer Hydrogenation of Quinolines, Benzoxazines and Benzothiazines. Catal Letters 2017. [DOI: 10.1007/s10562-017-2061-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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41
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Rao PC, Mandal S. Friedel-Crafts Alkylation of Indoles with Nitroalkenes through Hydrogen-Bond-Donating Metal-Organic Framework. ChemCatChem 2017. [DOI: 10.1002/cctc.201601583] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Purna Chandra Rao
- School of Chemistry; Indian Institute of Science Education and Research Thiruvananthapuram; Thiruvananthapuram Kerala 695016 India
| | - Sukhendu Mandal
- School of Chemistry; Indian Institute of Science Education and Research Thiruvananthapuram; Thiruvananthapuram Kerala 695016 India
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42
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Samoilichenko Y, Kondratenko V, Ezernitskaya M, Lyssenko K, Peregudov A, Khrustalev V, Maleev V, Moskalenko M, North M, Tsaloev A, Gugkaeva ZT, Belokon Y. A mechanistic study of the Lewis acid–Brønsted base–Brønsted acid catalysed asymmetric Michael addition of diethyl malonate to cyclohexenone. Catal Sci Technol 2017. [DOI: 10.1039/c6cy01697a] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Reaction shown to exhibit biomimetic behaviour.
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Affiliation(s)
- Yuri Samoilichenko
- A. N. Nesmeyanov Institute of Organoelement Compounds
- Russian Academy of Sciences
- Russian Federation
| | - Veronica Kondratenko
- A. N. Nesmeyanov Institute of Organoelement Compounds
- Russian Academy of Sciences
- Russian Federation
| | - Mariam Ezernitskaya
- A. N. Nesmeyanov Institute of Organoelement Compounds
- Russian Academy of Sciences
- Russian Federation
| | - Konstantin Lyssenko
- A. N. Nesmeyanov Institute of Organoelement Compounds
- Russian Academy of Sciences
- Russian Federation
| | - Alexander Peregudov
- A. N. Nesmeyanov Institute of Organoelement Compounds
- Russian Academy of Sciences
- Russian Federation
| | - Victor Khrustalev
- A. N. Nesmeyanov Institute of Organoelement Compounds
- Russian Academy of Sciences
- Russian Federation
- Peoples' Friendship University of Russia
- Russian Federation
| | - Victor Maleev
- A. N. Nesmeyanov Institute of Organoelement Compounds
- Russian Academy of Sciences
- Russian Federation
| | - Margarita Moskalenko
- A. N. Nesmeyanov Institute of Organoelement Compounds
- Russian Academy of Sciences
- Russian Federation
| | - Michael North
- Green Chemistry Centre of Excellence
- Department of Chemistry
- The University of York
- York
- YO10 5DD UK
| | - Alan Tsaloev
- Chemical Diversity Research Institute
- Khimki
- Russian Federation
| | - Zalina T. Gugkaeva
- A. N. Nesmeyanov Institute of Organoelement Compounds
- Russian Academy of Sciences
- Russian Federation
| | - Yuri Belokon
- A. N. Nesmeyanov Institute of Organoelement Compounds
- Russian Academy of Sciences
- Russian Federation
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43
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Velásquez-Hernández MDJ, Torres-Huerta A, Hernández-Balderas U, Martínez-Otero D, Núñez-Pineda A, Jancik V. Novel route to silanetriols and silanediols based on acetoxysilylalkoxides. Polyhedron 2017. [DOI: 10.1016/j.poly.2016.10.051] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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44
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Diemoz KM, Wilson SO, Franz AK. Synthesis of Structurally Varied 1,3-Disiloxanediols and Their Activity as Anion-Binding Catalysts. Chemistry 2016; 22:18349-18353. [DOI: 10.1002/chem.201604103] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2016] [Indexed: 01/06/2023]
Affiliation(s)
- Kayla M. Diemoz
- Department of Chemistry; University of California, Davis; One Shields Avenue Davis Ca USA
| | - Sean O. Wilson
- 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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45
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Bruña S, Garrido-Castro AF, Perles J, Montero-Campillo MM, Mó O, Kaifer AE, Cuadrado I. Multi-Ferrocene-Containing Silanols as Redox-Active Anion Receptors. Organometallics 2016. [DOI: 10.1021/acs.organomet.6b00559] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
| | | | | | | | | | - Angel E. Kaifer
- Center
for Supramolecular Science and Department of Chemistry, University of Miami, Coral Gables, Florida 33124-0431, United States
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46
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Highly Efficient Tetranuclear ZnII2LnIII2 Catalysts for the Friedel–Crafts Alkylation of Indoles and Nitrostyrenes. Catalysts 2016. [DOI: 10.3390/catal6090140] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
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47
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Hua Y, Asgari P, Avullala T, Jeon J. Catalytic Reductive ortho-C-H Silylation of Phenols with Traceless, Versatile Acetal Directing Groups and Synthetic Applications of Dioxasilines. J Am Chem Soc 2016; 138:7982-91. [PMID: 27265033 PMCID: PMC5103641 DOI: 10.1021/jacs.6b04018] [Citation(s) in RCA: 76] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A new, highly selective, bond functionalization strategy, achieved via relay of two transition metal catalysts and the use of traceless acetal directing groups, has been employed to provide facile formation of C-Si bonds and concomitant functionalization of a silicon group in a single vessel. Specifically, this approach involves the relay of Ir-catalyzed hydrosilylation of inexpensive and readily available phenyl acetates, exploiting disubstituted silyl synthons to afford silyl acetals and Rh-catalyzed ortho-C-H silylation to provide dioxasilines. A subsequent nucleophilic addition to silicon removes the acetal directing groups and directly provides unmasked phenol products and, thus, useful functional groups at silicon achieved in a single vessel. This traceless acetal directing group strategy for catalytic ortho-C-H silylation of phenols was also successfully applied to preparation of multisubstituted arenes. Remarkably, a new formal α-chloroacetyl directing group has been developed that allows catalytic reductive C-H silylation of sterically hindered phenols. In particular, this new method permits access to highly versatile and nicely differentiated 1,2,3-trisubstituted arenes that are difficult to access by other catalytic routes. In addition, the resulting dioxasilines can serve as chromatographically stable halosilane equivalents, which allow not only removal of acetal directing groups but also introduce useful functional groups leading to silicon-bridged biaryls. We demonstrated that this catalytic C-H bond silylation strategy has powerful synthetic potential by creating direct applications of dioxasilines to other important transformations, examples of which include aryne chemistry, Au-catalyzed direct arylation, sequential orthogonal cross-couplings, and late-stage silylation of phenolic bioactive molecules and BINOL scaffolds.
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Affiliation(s)
| | | | - Thirupataiah Avullala
- Department of Chemistry and Biochemistry, University of Texas at Arlington, Arlington, Texas 76019, United States
| | - Junha Jeon
- Department of Chemistry and Biochemistry, University of Texas at Arlington, Arlington, Texas 76019, United States
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48
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Baker’s yeast as an efficient biocatalyst for regioselective 1,4-conjugate addition of indoles to nitroolefins in aqueous medium. Tetrahedron Lett 2016. [DOI: 10.1016/j.tetlet.2016.04.057] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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49
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Affiliation(s)
- Yang Fan
- Department
of Chemistry, University of Minnesota, 207 Pleasant Street, SE, Minneapolis, Minnesota 55455, United States
| | - Steven R. Kass
- Department
of Chemistry, University of Minnesota, 207 Pleasant Street, SE, Minneapolis, Minnesota 55455, United States
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50
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Yadav S, Srivastava M, Rai P, Tripathi BP, Mishra A, Singh J, Singh J. Oxidative organophotoredox catalysis: a regioselective synthesis of 2-nitro substituted imidazopyridines and 3-substituted indoles, initiated by visible light. NEW J CHEM 2016. [DOI: 10.1039/c6nj02365g] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Intramolecular C–N heterocyclization and C–C bond formation under visible light irradiation at room temperature was accomplished with a metal-free photoredox catalyst.
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Affiliation(s)
- Snehlata Yadav
- Environmentally Benign Synthesis Lab
- Department of Chemistry
- University of Allahabad
- Allahabad-211002
- India
| | - Madhulika Srivastava
- Environmentally Benign Synthesis Lab
- Department of Chemistry
- University of Allahabad
- Allahabad-211002
- India
| | - Pratibha Rai
- Environmentally Benign Synthesis Lab
- Department of Chemistry
- University of Allahabad
- Allahabad-211002
- India
| | - Bhartendu Pati Tripathi
- Environmentally Benign Synthesis Lab
- Department of Chemistry
- University of Allahabad
- Allahabad-211002
- India
| | - Anu Mishra
- Environmentally Benign Synthesis Lab
- Department of Chemistry
- University of Allahabad
- Allahabad-211002
- India
| | - Jaya Singh
- Department of Chemistry
- LRPG College
- Sahibabad
- India
| | - Jagdamba Singh
- Environmentally Benign Synthesis Lab
- Department of Chemistry
- University of Allahabad
- Allahabad-211002
- India
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