1
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Li W, Ricker R, Lok Chan K, Fung Lau P, Buchbinder NW, Krebs J, Friedrich A, Lin Z, Santos WL, Radius U, Marder TB. Phosphine-Catalyzed 1,2-cis-Diboration of 1,3-Butadiynes. Chemistry 2024; 30:e202401235. [PMID: 38593362 DOI: 10.1002/chem.202401235] [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: 03/28/2024] [Revised: 04/06/2024] [Accepted: 04/09/2024] [Indexed: 04/11/2024]
Abstract
Trialkyl phosphines PMe3 and PEt3 catalyze the 1,2-cis-diboration of 1,3-butadiynes to give 1,2-diboryl enynes. The products were utilized to synthesize 1,1,2,4-tetraaryl enynes using a Suzuki-Miyaura protocol and can readily undergo proto-deborylation.
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Affiliation(s)
- Weipeng Li
- School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, China
- Institute of Inorganic Chemistry and Institute for Sustainable Chemistry & Catalysis with Boron, Julius-Maximilians-Universität Würzburg, Würzburg, 97074, Germany
| | - Robert Ricker
- Institute of Inorganic Chemistry and Institute for Sustainable Chemistry & Catalysis with Boron, Julius-Maximilians-Universität Würzburg, Würzburg, 97074, Germany
| | - Ka Lok Chan
- Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong SAR, China
| | - Pak Fung Lau
- Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong SAR, China
| | | | - Johannes Krebs
- Institute of Inorganic Chemistry and Institute for Sustainable Chemistry & Catalysis with Boron, Julius-Maximilians-Universität Würzburg, Würzburg, 97074, Germany
| | - Alexandra Friedrich
- Institute of Inorganic Chemistry and Institute for Sustainable Chemistry & Catalysis with Boron, Julius-Maximilians-Universität Würzburg, Würzburg, 97074, Germany
| | - Zhenyang Lin
- Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong SAR, China
| | - Webster L Santos
- Department of Chemistry Virginia Tech, Blacksburg, VA, 24061, USA
| | - Udo Radius
- Institute of Inorganic Chemistry and Institute for Sustainable Chemistry & Catalysis with Boron, Julius-Maximilians-Universität Würzburg, Würzburg, 97074, Germany
| | - Todd B Marder
- Institute of Inorganic Chemistry and Institute for Sustainable Chemistry & Catalysis with Boron, Julius-Maximilians-Universität Würzburg, Würzburg, 97074, Germany
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2
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Komaki T, Sato Y, Uchiyama M, Tanaka K, Nagashima Y. Visible-Light-Induced trans-Hydroboration of Diaryl Alkynes Utilizing Excited State of Borate Complexes. Org Lett 2024; 26:2180-2185. [PMID: 38466232 DOI: 10.1021/acs.orglett.4c00268] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/12/2024]
Abstract
We have developed visible-light-induced trans-hydroboration of diaryl alkynes via direct photoexcitation of in-situ-generated diboron complexes, affording previously elusive (E)-1,2-diaryl-vinylboronates with high stereoselectivity. Experimental, spectroscopic, and theoretical mechanistic studies revealed that the triplet-state borate complex facilitates B-B bond cleavage and the desired C-B bond formation. This methodology does not require any catalyst and is operationally simple. The highly borylated 1,2-diaryl alkenes [1-(2-borylphenyl)vinyl)boronates] are shown to be useful as building blocks.
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Affiliation(s)
- Takahiro Komaki
- Department of Chemical Science and Engineering, Tokyo Institute of Technology, O-okayama, Meguro-ku, Tokyo 152-8550, Japan
| | - Yu Sato
- Department of Chemical Science and Engineering, Tokyo Institute of Technology, O-okayama, Meguro-ku, Tokyo 152-8550, Japan
| | - Masanobu Uchiyama
- Graduate School of Pharmaceutical Sciences, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Ken Tanaka
- Department of Chemical Science and Engineering, Tokyo Institute of Technology, O-okayama, Meguro-ku, Tokyo 152-8550, Japan
| | - Yuki Nagashima
- Department of Chemical Science and Engineering, Tokyo Institute of Technology, O-okayama, Meguro-ku, Tokyo 152-8550, Japan
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3
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Karad SN, Saito H, Shimokawa J, Yorimitsu H. Regioselective Anti-Silyllithiation of Propargylic Alcohols. J Org Chem 2024; 89:3677-3683. [PMID: 36342367 DOI: 10.1021/acs.joc.2c01795] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Among the known hydrosilylation or carbosilylation conditions of alkynes, anti-addition of the two units across the triple bond is considered rare compared to the syn counterpart. For anti-silylative vicinal difunctionalizations, transition-metal catalysts, such as ruthenium or palladium complexes, are generally required. Accordingly, silyl alkali metals have not been employed for those anti-addition transformations. Here we demonstrate that silyllithiums can add across the triple bond of a series of propargylic alkoxides regioselectively in an anti-fashion. Upon treatment with a variety of electrophiles, the trisubstituted alkenyl lithium intermediates were transformed into highly functionalized β-silyl allylic alcohols with high regiocontrol, eventually providing tri- or tetrasubstituted alkenylsilanes stereoselectively. A classic trick for anti-addition with propargylic alkoxides has transformed anti-silylative functionalizations into a robust and reliable strategy.
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Affiliation(s)
- Somnath N Karad
- Department of Chemistry, Graduate School of Science, Kyoto University, Sakyo-ku, Kyoto 606-8502, Japan
| | - Hayate Saito
- 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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4
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Zhao S, Ding L, Sun Y, Wang M, Zhao D. Synergistic Palladium/Lewis Acid-Catalyzed Regio- and Stereo-divergent Bissilylation of Alkynoates: Scope, Mechanism, and Origin of Selectivity. Angew Chem Int Ed Engl 2023; 62:e202309169. [PMID: 37477636 DOI: 10.1002/anie.202309169] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2023] [Revised: 07/20/2023] [Accepted: 07/20/2023] [Indexed: 07/22/2023]
Abstract
Transition metal-catalyzed bissilylation reactions of alkynes with disilane reagents have become one of the most straightforward and efficient protocols to rapidly produce structurally diverse alkenyl silicon derivatives. In these reactions, the utilization of unsymmetrical disilane reagents provided the possibilities for reactivity enhancement as well as the synthetic merits in contrast to symmetrical disilane reagents. However, a major yet challenging objective is achieving precise control over the selectivity including the regioselectivity and the cis/trans-selectivity. Herein we realized the first divergent bissilylation of alkynoates with our developed air-stable disilane reagent 8-(2-substituted-1,1,2,2-tetramethyldisilanyl)quinoline (TMDQ) by means of synergistic Pd/Lewis acid catalytic system. The catalytic system precisely dictates the selectivity, resulting in the divergent synthesis of 1,2-bissilyl alkenes. The power of these 1,2-bissilyl alkenes serving as the key synthetic intermediates has been clearly demonstrated by rapid construction of diverse motifs and densely functionalized biologically active compounds. In addition, the origins of the switchable selectivities were well elucidated by experimental and computational studies on the reaction mechanism and were mainly attributed to different ligand steric effects, the use of the specific disilane reagent TMDQ and the different coordination modes of different Lewis acid with alkynoates.
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Affiliation(s)
- Shuang Zhao
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, 94 Weijin Road, Tianjin, 300071, China
| | - Linlin Ding
- State Key Laboratory of Coordination Chemistry, Chemistry and Biomedicine Innovation Center (ChemBIC), School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, China
| | - Yingman Sun
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, 94 Weijin Road, Tianjin, 300071, China
| | - Minyan Wang
- State Key Laboratory of Coordination Chemistry, Chemistry and Biomedicine Innovation Center (ChemBIC), School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, China
| | - Dongbing Zhao
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, 94 Weijin Road, Tianjin, 300071, China
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5
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Biswas K, Khamrai A, Malik S, Ganesh V. Organophosphorus-Catalyzed Borylative Ring-Opening of Vinylcyclopropanes: A Stereoselective Route to δ-Valerolactones. Org Lett 2023; 25:1805-1810. [PMID: 36919935 DOI: 10.1021/acs.orglett.2c04284] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/16/2023]
Abstract
We report an operationally simple route to δ-valerolactones through an organophosphorus-catalyzed borylative ring-opening/allylation of vinylcyclopropanes providing δ-hydroxy esters stereoselectively. The δ-hydroxy esters were lactonized to obtain densely substituted δ-valerolactones. The present methodology exhibited enhanced functional group tolerance compared to the existing metal-mediated methods. A plausible mechanism for borylative ring-opening reaction has been suggested. 31P NMR studies indicated the involvement of a phosphonium zwitterionic species. The synthetic utility of the intermediate allyl boronates was demonstrated.
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Affiliation(s)
- Krishna Biswas
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur, West Bengal-721302, India
| | - Aankhi Khamrai
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur, West Bengal-721302, India
| | - Subrata Malik
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur, West Bengal-721302, India
| | - Venkataraman Ganesh
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur, West Bengal-721302, India
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6
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Wang Z, Lamine W, Miqueu K, Liu SY. A syn outer-sphere oxidative addition: the reaction mechanism in Pd/Senphos-catalyzed carboboration of 1,3-enynes. Chem Sci 2023; 14:2082-2090. [PMID: 36845936 PMCID: PMC9945512 DOI: 10.1039/d2sc05828f] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2022] [Accepted: 01/04/2023] [Indexed: 01/19/2023] Open
Abstract
We report a combined experimental and computational study of Pd/Senphos-catalyzed carboboration of 1,3-enynes utilizing DFT calculations, 31P NMR study, kinetic study, Hammett analysis and Arrhenius/Eyring analysis. Our mechanistic study provides evidence against the conventional inner-sphere β-migratory insertion mechanism. Instead, a syn outer-sphere oxidative addition mechanism featuring a Pd-π-allyl intermediate followed by coordination-assisted rearrangements is consistent with all the experimental observations.
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Affiliation(s)
- Ziyong Wang
- Department of Chemistry, Boston College Chestnut Hill Massachusetts 02467-3860 USA
| | - Walid Lamine
- Université de Pau et des Pays de l'Adour, E2S UPPA/CNRS, Institut des Sciences Analytiques et de Physico-Chimie pour l'Environnement et les Matériaux IPREM UMR 5254 Hélioparc, 2 Avenue P. Angot 64053 Pau Cedex 09 France
| | - Karinne Miqueu
- Université de Pau et des Pays de l'Adour, E2S UPPA/CNRS, Institut des Sciences Analytiques et de Physico-Chimie pour l'Environnement et les Matériaux IPREM UMR 5254 Hélioparc, 2 Avenue P. Angot 64053 Pau Cedex 09 France
| | - Shih-Yuan Liu
- Department of Chemistry, Boston College Chestnut Hill Massachusetts 02467-3860 USA
- Université de Pau et des Pays de l'Adour, E2S UPPA/CNRS, Institut des Sciences Analytiques et de Physico-Chimie pour l'Environnement et les Matériaux IPREM UMR 5254 Hélioparc, 2 Avenue P. Angot 64053 Pau Cedex 09 France
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7
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Metal-Free One-Pot Multi-Functionalization of Unsaturated Compounds with Interelement Compounds by Radical Process. MOLECULES (BASEL, SWITZERLAND) 2023; 28:molecules28020787. [PMID: 36677845 PMCID: PMC9861539 DOI: 10.3390/molecules28020787] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Revised: 01/08/2023] [Accepted: 01/09/2023] [Indexed: 01/14/2023]
Abstract
In recent years, the importance of "environmentally friendly manufacturing" has been increasing toward the establishment of a resource-recycling society. In organic synthesis, as well, it is becoming increasingly important to develop new synthetic strategies with resource conservation and the recycling of elemental resources in mind, rather than just only synthesis. Many studies on the construction of frameworks of functional molecules using ionic reactions and transition-metal-catalyzed reactions have been reported, but most of them have focused on the formation of carbon-carbon bonds. However, it is essential to introduce appropriate functional groups at appropriate positions in molecules in order for the molecules to express their functions, and furthermore, the highly selective preparation of multiple functional groups is considered important for the creation of new functional molecules. In this review, we focus on radical reactions with high functional group selectivity and overview the recent progress in practical methods for the simultaneous introduction of multiple functional groups and propose future synthetic strategies that emphasize the recycling of elemental resources and environmental friendliness.
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8
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Jos S, Tan C, Thilmany P, Saadane A, Slebodnick C, Evano G, Santos WL. Phosphine-catalyzed regio- and stereo-selective hydroboration of ynamides to ( Z)-β-borylenamides. Chem Commun (Camb) 2022; 58:13751-13754. [PMID: 36416159 DOI: 10.1039/d2cc04543e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
We report a tri-n-butyl phosphine catalyzed regio- and stereo-selective hydroboration of ynamides to yield (Z)-β-borylenamides in good yields. Surprisingly, a formal cis addition to the triple bond was observed as confirmed by NMR and X-ray crystallography. 31P NMR studies suggest that a zwitterionic vinylphosphonium intermediate is key in the mechanism. The resulting products were further transformed to β-CF3 enamides via stereoretentive trifluoromethylation.
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Affiliation(s)
- Swetha Jos
- Department of Chemistry, Virginia Tech, Blacksburg, Virginia, USA.
| | - Christine Tan
- Department of Chemistry, Virginia Tech, Blacksburg, Virginia, USA.
| | - Pierre Thilmany
- Laboratoire de Chimie Organique, Service de Chimie et PhysicoChimie Organiques, Université libre de Bruxelles, Avenue F. D. Roosevelt 50, CP160/06, 1050 Brussels, Belgium
| | - Alaâ Saadane
- Laboratoire de Chimie Organique, Service de Chimie et PhysicoChimie Organiques, Université libre de Bruxelles, Avenue F. D. Roosevelt 50, CP160/06, 1050 Brussels, Belgium
| | - Carla Slebodnick
- Department of Chemistry, Virginia Tech, Blacksburg, Virginia, USA.
| | - Gwilherm Evano
- Laboratoire de Chimie Organique, Service de Chimie et PhysicoChimie Organiques, Université libre de Bruxelles, Avenue F. D. Roosevelt 50, CP160/06, 1050 Brussels, Belgium
| | - Webster L Santos
- Department of Chemistry, Virginia Tech, Blacksburg, Virginia, USA.
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9
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Pawley SB, Conner AM, Omer HM, Watson DA. Development of a General Method for the Hiyama-Denmark Cross-Coupling of Tetrasubstituted Vinyl Silanes. ACS Catal 2022; 12:13108-13115. [PMID: 36817085 PMCID: PMC9933925 DOI: 10.1021/acscatal.2c03981] [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] [Indexed: 11/28/2022]
Abstract
General conditions for the Hiyama-Denmark cross-coupling of tetrasubstituted vinyl silanes and aryl halides are reported. Prior reports of Hiyama-Denmark reactions of tetrasubstituted vinyl silanes have required the use of vinyl silanols or silanolates, which are challenging to handle, or internally activated vinyl silanes, which lack structural generality. Now, unactivated tetrasubstituted vinyl silanes, bearing bench-stable tetraorganosilicon centers, and aryl halides can be coupled. The key to this discovery is the identification of dimethyl(5-methylfuryl)vinylsilanes as bench stable and easily prepared cross-coupling partners that are readily activated under mild conditions in Hiyama-Denmark couplings. These palladium-catalyzed cross-couplings proceed well with aryl chlorides, though aryl bromides and iodides are also tolerated, and the reactions display high stereospecificity in the formation of tetrasubstituted alkenes. In addition, only a mild base (KOSiMe3) and common solvents (THF/DMA) are required, and importantly toxic additives (such as 18-crown-6) are not needed. We also show that these conditions are equally applicable to Hiyama-Denamrk coupling of trisubstituted vinyl silanes.
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Affiliation(s)
| | | | - Humair M. Omer
- Department of Chemistry and Biochemistry, University of Delaware, Newark, Delaware 19716
| | - Donald A. Watson
- Department of Chemistry and Biochemistry, University of Delaware, Newark, Delaware 19716
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10
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Arai R, Nagashima Y, Koshikawa T, Tanaka K. Photocatalytic Generations of Secondary and Tertiary Silyl Radicals from Silylboranes Using an Alkoxide Cocatalyst. J Org Chem 2022. [PMID: 36214474 DOI: 10.1021/acs.joc.2c01885] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Silyl radicals are valuable species to prepare diverse organosilicon compounds. However, unlike stable tertiary silyl radicals, the use of secondary silyl radicals has been problematic in silylation reactions due to their instability. Here, we present photocatalytic in situ generations of both secondary and tertiary silyl radicals by one-electron oxidation of ate complexes, formed from silylboranes and an alkoxide cocatalyst, achieving highly efficient hydrosilylation and deuterosilylation of electron-rich alkenes and dienes as well as electron-deficient alkenes. The theoretical studies show that anionic borate complexes activated with an alkoxide have lower oxidation potentials than neutral borate complexes, allowing the formation of secondary silyl radicals. The calculated reaction pathways reveal that anionic conditions using the conjugate acid-base pair of NaOEt (cocatalyst) and EtOH (solvent) are the key to expanding the scope of silyl radicals and alkenes.
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Affiliation(s)
- Ryo Arai
- Department of Chemical Science and Engineering, Tokyo Institute of Technology, O-okayama, Meguro-ku, Tokyo152-8550, Japan
| | - Yuki Nagashima
- Department of Chemical Science and Engineering, Tokyo Institute of Technology, O-okayama, Meguro-ku, Tokyo152-8550, Japan
| | - Takumi Koshikawa
- Department of Chemical Science and Engineering, Tokyo Institute of Technology, O-okayama, Meguro-ku, Tokyo152-8550, Japan
| | - Ken Tanaka
- Department of Chemical Science and Engineering, Tokyo Institute of Technology, O-okayama, Meguro-ku, Tokyo152-8550, Japan
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11
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Altarejos J, Valero A, Manzano R, Carreras J. Synthesis of Tri‐ and Tetrasubstituted Alkenyl Boronates from Alkynes. European J Org Chem 2022. [DOI: 10.1002/ejoc.202200521] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Julia Altarejos
- Universidad de Alcalá Facultad de Ciencias: Universidad de Alcala Facultad de Ciencias Química Orgánica y Química Inorgánica SPAIN
| | - Antonio Valero
- Universidad de Alcalá Facultad de Ciencias: Universidad de Alcala Facultad de Ciencias Química Orgánica y Química Inorgánica SPAIN
| | - Rubén Manzano
- Universidad de Alcalá Facultad de Ciencias: Universidad de Alcala Facultad de Ciencias Química Orgánica y Química Inorgánica SPAIN
| | - Javier Carreras
- Universidad de Alcalá Facultad de Ciencias: Universidad de Alcala Facultad de Ciencias Química Orgánica y Química Inorgánica Carretera Madrid-Barcelona km 33,6, Campus Universitario.Facultad de Farmacia 28805 Alcalá de Henares SPAIN
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12
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Suzuki K, Sugihara N, Nishimoto Y, Yasuda M. anti-Selective Borylstannylation of Alkynes with (o-Phenylenediaminato)borylstannanes by a Radical Mechanism. Angew Chem Int Ed Engl 2022; 61:e202201883. [PMID: 35485137 DOI: 10.1002/anie.202201883] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2022] [Indexed: 12/20/2022]
Abstract
We have achieved the first anti-borylstannylation of alkynes by using (o-phenylenediaminato)borylstannanes. This reaction afforded 1-boryl-2-stannylalkenes with excellent regio- and stereoselectivity by a radical mechanism. This anti-addition manner is in sharp contrast to the syn-selectivity obtained during transition metal-catalyzed borylstannylation. The mild radical conditions enabled a broad substrate scope, and various types of aromatic and aliphatic alkynes were applicable. The origin of regio- and stereoselectivity was elucidated by DFT calculation of the reaction mechanism. The application of the borylstannylation products to cross- or homocoupling reactions provided ready access to either triarylethenes or bisborylbutadienes.
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Affiliation(s)
- Kensuke Suzuki
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka, 565-0871, Japan
| | - Naoki Sugihara
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka, 565-0871, Japan
| | - Yoshihiro Nishimoto
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka, 565-0871, Japan
- Innovative Catalysis Science Division, Institute for Open and Transdisciplinary Research Initiatives (ICS-OTRI), Osaka University, 2-1 Yamadaoka, Suita, Osaka, 565-0871, Japan
| | - Makoto Yasuda
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka, 565-0871, Japan
- Innovative Catalysis Science Division, Institute for Open and Transdisciplinary Research Initiatives (ICS-OTRI), Osaka University, 2-1 Yamadaoka, Suita, Osaka, 565-0871, Japan
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13
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Bowen J, Slebodnick C, Santos WL. Phosphine-catalyzed hydroboration of propiolonitriles: access to ( E)-1,2-vinylcyanotrifluoroborate derivatives. Chem Commun (Camb) 2022; 58:5984-5987. [PMID: 35481802 DOI: 10.1039/d2cc00603k] [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
We report an organocatalytic trans hydroboration of 3-substituted-propiolonitriles. In the presence of catalytic amounts of tributylphosphine and pinacolborane, regioselective hydroboration of the internal triple bond proceeded in a stereoselective fashion under mild conditions to afford the corresponding (E)-1,2-vinylcyanoborane derivatives. The mechanism is proposed to occur through a 1,2-phosphine addition instead of a canonical 1,4-conjugate addition pathway.
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Affiliation(s)
- Johnathan Bowen
- Department of Chemistry, Virginia Tech, Blacksburg, VA 24061, USA.
| | - Carla Slebodnick
- Department of Chemistry, Virginia Tech, Blacksburg, VA 24061, USA.
| | - Webster L Santos
- Department of Chemistry, Virginia Tech, Blacksburg, VA 24061, USA.
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14
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Suzuki K, Sugihara N, Nishimoto Y, Yasuda M. anti‐Selective Borylstannylation of Alkynes with (o‐Phenylenediaminato)borylstannanes by a Radical Mechanism. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202201883] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
| | | | | | - Makoto Yasuda
- Osaka University Department of Applied Chemistry, Graduate School of Engineering 2-1 Yamadaoka, Suita 565-0871 Osaka JAPAN
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15
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Sasaki I, Maebashi A, Li J, Ohmura T, Suginome M. Synthesis of Disilanes, Dihydrosiloles, and 1,4‐Disilacyclohexa‐2,5‐dienes by Transition‐Metal‐Free Transfer of Diphenylsilylene and Dimethylsilylene from Silylboronic Esters. European J Org Chem 2022. [DOI: 10.1002/ejoc.202101573] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Ikuo Sasaki
- Kyoto University Faculty of Engineering Graduate School of Engineering: Kyoto Daigaku Kogakubu Daigakuin Kogaku Kenkyuka Department of Synthetic Chemistry and Biological Chemistry A4-302 KatsuraNishikyo-ku 615-8510 Kyoto JAPAN
| | - Asahi Maebashi
- Kyoto University Faculty of Engineering Graduate School of Engineering: Kyoto Daigaku Kogakubu Daigakuin Kogaku Kenkyuka Department of Synthetic Chemistry and Biological Chemistry A4-302 KatsuraNishikyo-ku 615-8510 Kyoto JAPAN
| | - Jiaying Li
- Kyoto University Faculty of Engineering Graduate School of Engineering: Kyoto Daigaku Kogakubu Daigakuin Kogaku Kenkyuka Department of Synthetic Chemistry and Biological Chemistry A4-302 KatsuraNishikyo-ku 615-8510 Kyoto JAPAN
| | - Toshimichi Ohmura
- Kyoto University Department of Synthetic Chemistry and Biological Chemistry, Graduate School of E A4-303 Katsura, Nishikyo-ku 615-8510 Kyoto JAPAN
| | - Michinori Suginome
- Kyoto University Faculty of Engineering Graduate School of Engineering: Kyoto Daigaku Kogakubu Daigakuin Kogaku Kenkyuka Department of Synthetic Chemistry and Biological Chemistry A4-306 KatsuraNishikyo-ku 615-8510 Kyoto JAPAN
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16
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Grams RJ, Lawal MM, Szwetkowski C, Foster D, Rosenblum CA, Slebodnick C, Welborn VV, Santos WL. Organocatalytic
Trans
Semireduction of Primary and Secondary Propiolamides: Substrate Scope and Mechanistic Studies. Adv Synth Catal 2022. [DOI: 10.1002/adsc.202101020] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- R. Justin Grams
- Department of Chemistry Virginia Tech 900 West Campus Drive Blacksburg Virginia 24061 United States
| | - Monsurat M. Lawal
- Department of Chemistry Virginia Tech 900 West Campus Drive Blacksburg Virginia 24061 United States
| | - Connor Szwetkowski
- Department of Chemistry Virginia Tech 900 West Campus Drive Blacksburg Virginia 24061 United States
| | - Daniel Foster
- Department of Chemistry Virginia Tech 900 West Campus Drive Blacksburg Virginia 24061 United States
| | - Carol Ann Rosenblum
- Department of Chemistry Virginia Tech 900 West Campus Drive Blacksburg Virginia 24061 United States
| | - Carla Slebodnick
- Department of Chemistry Virginia Tech 900 West Campus Drive Blacksburg Virginia 24061 United States
| | - Valerie Vaissier Welborn
- Department of Chemistry Virginia Tech 900 West Campus Drive Blacksburg Virginia 24061 United States
| | - Webster L. Santos
- Department of Chemistry Virginia Tech 900 West Campus Drive Blacksburg Virginia 24061 United States
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17
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Li Y, Du Y, Liu Y, Liu R, Zhou R. Phosphine-catalyzed divergent reactivity of alkynoates with acid anhydrides: chemo- and stereoselective synthesis of polysubstituted olefins and dienes. Org Chem Front 2022. [DOI: 10.1039/d2qo00820c] [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
Unprecedented phosphine-catalyzed chemoselective acylesterification, tandem addition and Michael type reaction between alkynoates and acid anhydrides have been developed, enabling efficient synthesis of either the polysubstituted olefins or the multifunctional dienes.
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Affiliation(s)
- Yunxia Li
- College of Chemistry and Chemical Engineering, Taiyuan University of Technology, Taiyuan, 030024, China
| | - Yunfeng Du
- College of Chemistry and Chemical Engineering, Taiyuan University of Technology, Taiyuan, 030024, China
| | - Yiming Liu
- College of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, China
| | - Rongfang Liu
- College of Traditional Chinese Medicine and Food Engineering, Shanxi University of Chinese Medicine, Jinzhong, 030619, China
| | - Rong Zhou
- College of Chemistry and Chemical Engineering, Taiyuan University of Technology, Taiyuan, 030024, China
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18
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Carbó JJ, Fernández E. Alkoxide activation of tetra-alkoxy diboron reagents in C-B bond formation: a decade of unpredictable reactivity. Chem Commun (Camb) 2021; 57:11935-11947. [PMID: 34704565 DOI: 10.1039/d1cc05123g] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
Any attempt to facilitate a new generation of C-B bonds represents a useful tool in organic synthesis. In addition, if that approach highlights the nucleophilic character of boryl moieties in the absence of transition metal complexes, the challenge to create new reactive platforms becomes an opportunity. We have been deeply involved in the experimental and theoretical validation of C-B bond formation by means of alkoxide activation of tetra-alkoxy diboron reagents and here is presented a convenient guide to understand the concept and the applications.
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Affiliation(s)
- Jorge J Carbó
- Departament de Química Física i Inorgànica, Unversitat Rovira i Virgili (URV), 43007, Spain.
| | - Elena Fernández
- Departament de Química Física i Inorgànica, Unversitat Rovira i Virgili (URV), 43007, Spain.
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19
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trans-Selective hydrocyanation of ynoates, ynones and ynoic acids catalyzed by nucleophilic phosphines. Tetrahedron 2021. [DOI: 10.1016/j.tet.2021.132457] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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20
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Wang Z, Wu J, Lamine W, Li B, Sotiropoulos JM, Chrostowska A, Miqueu K, Liu SY. C-Boron Enolates Enable Palladium Catalyzed Carboboration of Internal 1,3-Enynes. Angew Chem Int Ed Engl 2021; 60:21231-21236. [PMID: 34245074 DOI: 10.1002/anie.202108534] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2021] [Indexed: 12/17/2022]
Abstract
A new family of carbon-bound boron enolates, generated by a kinetically controlled halogen exchange between chlorocatecholborane and silylketene acetals, is described. These C-boron enolates are demonstrated to activate 1,3-enyne substrates in the presence of a Pd0 /Senphos ligand complex, resulting in the first examples of a carboboration reaction of an alkyne with enolate-equivalent nucleophiles. Highly substituted dienyl boron building blocks are produced in excellent site-, regio-, and diastereoselectivity by the described catalytic cis-carboboration reaction.
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Affiliation(s)
- Ziyong Wang
- Department of Chemistry, Boston College, Chestnut Hill, MA, 02467, USA
| | - Jason Wu
- Department of Chemistry, Boston College, Chestnut Hill, MA, 02467, USA
| | - Walid Lamine
- Université de Pau et des Pays de l'Adour, E2S UPPA, CNRS, IPREM, UMR 5254, 64053, Pau cedex 09, France
| | - Bo Li
- Department of Chemistry, Boston College, Chestnut Hill, MA, 02467, USA
| | - Jean-Marc Sotiropoulos
- Université de Pau et des Pays de l'Adour, E2S UPPA, CNRS, IPREM, UMR 5254, 64053, Pau cedex 09, France
| | - Anna Chrostowska
- Université de Pau et des Pays de l'Adour, E2S UPPA, CNRS, IPREM, UMR 5254, 64053, Pau cedex 09, France
| | - Karinne Miqueu
- Université de Pau et des Pays de l'Adour, E2S UPPA, CNRS, IPREM, UMR 5254, 64053, Pau cedex 09, France
| | - Shih-Yuan Liu
- Department of Chemistry, Boston College, Chestnut Hill, MA, 02467, USA.,Université de Pau et des Pays de l'Adour, E2S UPPA, CNRS, IPREM, UMR 5254, 64053, Pau cedex 09, France
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21
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Wang Z, Wu J, Lamine W, Li B, Sotiropoulos J, Chrostowska A, Miqueu K, Liu S. C−Boron Enolates Enable Palladium Catalyzed Carboboration of Internal 1,3‐Enynes. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202108534] [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)
- Ziyong Wang
- Department of Chemistry Boston College Chestnut Hill MA 02467 USA
| | - Jason Wu
- Department of Chemistry Boston College Chestnut Hill MA 02467 USA
| | - Walid Lamine
- Université de Pau et des Pays de l'Adour, E2S UPPA CNRS, IPREM, UMR 5254 64053 Pau cedex 09 France
| | - Bo Li
- Department of Chemistry Boston College Chestnut Hill MA 02467 USA
| | - Jean‐Marc Sotiropoulos
- Université de Pau et des Pays de l'Adour, E2S UPPA CNRS, IPREM, UMR 5254 64053 Pau cedex 09 France
| | - Anna Chrostowska
- Université de Pau et des Pays de l'Adour, E2S UPPA CNRS, IPREM, UMR 5254 64053 Pau cedex 09 France
| | - Karinne Miqueu
- Université de Pau et des Pays de l'Adour, E2S UPPA CNRS, IPREM, UMR 5254 64053 Pau cedex 09 France
| | - Shih‐Yuan Liu
- Department of Chemistry Boston College Chestnut Hill MA 02467 USA
- Université de Pau et des Pays de l'Adour, E2S UPPA CNRS, IPREM, UMR 5254 64053 Pau cedex 09 France
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22
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Biswas K, Das A, Ganesh V. Recent Advances in Organophosphorus‐Catalyzed Borylation and Silylation Reactions. Adv Synth Catal 2021. [DOI: 10.1002/adsc.202100710] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Krishna Biswas
- Indian Institute of Technology Kharagpur Kharagpur 721 302 West Bengal India
| | - Aniruddha Das
- Indian Institute of Technology Kharagpur Kharagpur 721 302 West Bengal India
| | - Venkataraman Ganesh
- Indian Institute of Technology Kharagpur Kharagpur 721 302 West Bengal India
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23
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Nakano M, Nakamura R, Sumida Y, Nagao K, Furuyama T, Inagaki F, Ohmiya H. Fluorescent-Oxaboroles: Synthesis and Optical Property by Sugar Recognition. Chem Pharm Bull (Tokyo) 2021; 69:526-528. [PMID: 34078798 DOI: 10.1248/cpb.c21-00179] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The optical property of fluorescent unit-conjugated aliphatic oxaboroles has been investigated. The oxaboroles provide good fluorescence quantum yields and selective recognition toward D-ribose and D-ribose containing molecules. The molecular recognition induced significant fluorescence quenching. The property of the boroles showed the possibility of the boron-based nicotinamide adenine dinucleotide (NAD) sensor probe.
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Affiliation(s)
- Misaki Nakano
- Division of Pharmaceutical Sciences, Graduate School of Medical Sciences, Kanazawa University
| | - Rikako Nakamura
- Division of Pharmaceutical Sciences, Graduate School of Medical Sciences, Kanazawa University
| | - Yuto Sumida
- Division of Pharmaceutical Sciences, Graduate School of Medical Sciences, Kanazawa University
| | - Kazunori Nagao
- Division of Pharmaceutical Sciences, Graduate School of Medical Sciences, Kanazawa University
| | | | | | - Hirohisa Ohmiya
- Division of Pharmaceutical Sciences, Graduate School of Medical Sciences, Kanazawa University
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24
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Wu L, Kojima C, Lee KH, Morisako S, Lin Z, Yamashita M. Mechanistic study on the reaction of pinB-BMes 2 with alkynes based on experimental investigation and DFT calculations: gradual change of mechanism depending on the substituent. Chem Sci 2021; 12:9806-9815. [PMID: 34349954 PMCID: PMC8293998 DOI: 10.1039/d1sc02863d] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2021] [Accepted: 06/16/2021] [Indexed: 12/31/2022] Open
Abstract
Transition metal-free direct and base-catalyzed 1,2-diborations of arylacetylenes using pinB-BMes2 provided a syn/anti-isomeric mixture of diborylalkenes. The kinetic analysis showed that the reaction rate and isomer ratio were affected by reaction conditions and substituents on the aryl ring. DFT calculations indicated that direct addition proceeded via the interaction of acetylene-π with the BMes2 fragment. In contrast, for the base-catalyzed diboration, the previously isolated sp2–sp3 diborane and borataallene were confirmed as stable intermediates by calculations. The whole reaction pathways can be divided into the Bpin-migration and deprotonation steps, where the borataallene should be considered as a common intermediate. It should be noted that the deprotonation step is reversible and affords the kinetically less favoured isomer under the thermodynamic conditions. As a result, the composition of isomeric products, in the base-catalyzed diboration, is attributed to the small difference of activation barriers between direct and base-catalyzed systems. Combination of kinetic and DFT studies revealed a subtle balance for substituent effect toward the regioselectivity of the product in metal-free and base-catalyzed diboration of arylacetylenes.![]()
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Affiliation(s)
- Linlin Wu
- Department of Chemistry, The Hong Kong University of Science and Technology Clear Water Bay Kowloon Hong Kong
| | - Chiemi Kojima
- Department of Applied Chemistry, Faculty of Science and Engineering, Chuo University 1-13-27 Kasuga, Bunkyo-ku Tokyo 112-8551 Japan
| | - Ka-Ho Lee
- Department of Chemistry, The Hong Kong University of Science and Technology Clear Water Bay Kowloon Hong Kong
| | - Shogo Morisako
- Department of Molecular and Macromolecular Chemistry, Graduate School of Engineering, Nagoya University Furo-cho, Chikusa-ku Nagoya Aichi 464-8603 Japan
| | - Zhenyang Lin
- Department of Chemistry, The Hong Kong University of Science and Technology Clear Water Bay Kowloon Hong Kong
| | - Makoto Yamashita
- Department of Molecular and Macromolecular Chemistry, Graduate School of Engineering, Nagoya University Furo-cho, Chikusa-ku Nagoya Aichi 464-8603 Japan
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25
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Li T, Wu Y, Duan W, Ma Y. Silylative aromatization of p-quinone methides under metal and solvent free conditions. RSC Adv 2021; 11:17860-17864. [PMID: 35480172 PMCID: PMC9033227 DOI: 10.1039/d1ra03193g] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2021] [Accepted: 05/12/2021] [Indexed: 11/30/2022] Open
Abstract
A base-mediated silylation reaction leading to benzyl silanes has been developed. Under transition-metal and solvent free conditions, the silylation of a wide array of p-quinone methides is achieved using a Cs2CO3 catalyst in yields up to 96%. Carboxylation of the as-obtained organosilane with gaseous CO2 provides a new synthetic protocol for the preparation of carboxylic acid. A novel and efficient synthetic protocol is reported for the synthesis of benzyl silanes from readily available silylborane and p-quinone methides using 5% cesium carbonate under solvent-free conditions.![]()
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Affiliation(s)
- Tingting Li
- Department of Chemistry, Shandong University Shanda South Road No. 27 Jinan 250100 P. R. China
| | - Yuzhu Wu
- Department of Chemistry, Shandong University Shanda South Road No. 27 Jinan 250100 P. R. China
| | - Wenzeng Duan
- School of Chemistry and Chemical Engineering, Liaocheng University Liaocheng 252000 P. R. China
| | - Yudao Ma
- Department of Chemistry, Shandong University Shanda South Road No. 27 Jinan 250100 P. R. China
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26
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Moniwa H, Shintani R. Copper-Catalyzed Synthesis of Tetrasubstituted Alkenes via Regio- and anti-Selective Addition of Silylboronates to Internal Alkynes. Chemistry 2021; 27:7512-7515. [PMID: 33769610 DOI: 10.1002/chem.202100933] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2021] [Indexed: 12/12/2022]
Abstract
As a new and complementary method for the synthesis of structurally defined tetrasubstituted alkenes, a copper-catalyzed regio- and anti-selective addition of silylboronates to unsymmetric internal alkynes has been developed. A variety of unactivated alkynes can be employed with high selectivity under simple and mild conditions, and the resulting products have been further functionalized by utilizing silyl and boryl groups on the alkene.
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Affiliation(s)
- Hirokazu Moniwa
- Division of Chemistry, Department of Materials Engineering Science, Graduate School of Engineering Science, Osaka University, Toyonaka, Osaka, 560-8531, Japan
| | - Ryo Shintani
- Division of Chemistry, Department of Materials Engineering Science, Graduate School of Engineering Science, Osaka University, Toyonaka, Osaka, 560-8531, Japan
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27
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Ohmura T, Takaoka Y, Suginome M. Copper-catalyzed regioselective trans-silaboration of internal arylalkynes with stereochemical switch to cis-addition mode. Chem Commun (Camb) 2021; 57:4670-4673. [PMID: 33978003 DOI: 10.1039/d1cc01579f] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Copper-catalyzed silafunctionalization of alkynes using a silylboronic ester as a silicon source has recently progressed rapidly. Generally, the reaction affords a product with cis-stereoselectivity. We herein describe trans-selective 1,2-addition of silylboronic esters to internal arylalkynes, which was promoted efficiently by the CuOt-Bu/RCy2P/NaOt-Bu catalysts. Moreover, we report a stereochemical switch to cis-addition in the reactions of Me2(i-PrO)Si-B(pin) in hydrocarbon solvents including cyclohexane.
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Affiliation(s)
- Toshimichi Ohmura
- Department of Synthetic Chemistry and Biological Chemistry, Graduate School of Engineering, Kyoto University, Katsura Nishikyo-ku Kyoto 615-8510, Japan.
| | - Yuta Takaoka
- Department of Synthetic Chemistry and Biological Chemistry, Graduate School of Engineering, Kyoto University, Katsura Nishikyo-ku Kyoto 615-8510, Japan.
| | - Michinori Suginome
- Department of Synthetic Chemistry and Biological Chemistry, Graduate School of Engineering, Kyoto University, Katsura Nishikyo-ku Kyoto 615-8510, Japan.
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28
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Huang J, Li X, Wen H, Ouyang L, Luo N, Liao J, Luo R. Substrate-Controlled Cu(OAc) 2-Catalyzed Stereoselective Semi-Reduction of Alkynes with MeOH as the Hydrogen Source. ACS OMEGA 2021; 6:11740-11749. [PMID: 34056327 PMCID: PMC8154033 DOI: 10.1021/acsomega.1c01083] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/27/2021] [Accepted: 04/09/2021] [Indexed: 06/12/2023]
Abstract
A substrate-controlled stereoselective semi-reduction of alkynes with MeOH as the hydrogen source has been developed, and readily available Cu(OAc)2 (copper acetate) is utilized as an optimal catalyst. The detailed investigation of the mechanism revealed distinct catalytic processes for the (Z)- and (E)-alkenes, respectively. As a result, a diversity of alkynes (including terminal, internal alkynes etc.) were compatible under the mild reaction conditions. Furthermore, the high proportion of deuterium in Z-alkenes (up to 96%) was obtained using d 4-methanol as a solvent.
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Affiliation(s)
- Jiuzhong Huang
- School
of Pharmacy, Gannan Medical University, Ganzhou 341000, P. R. China
| | - Xiaoning Li
- Key
Laboratory of Prevention and Treatment of Cardiovascular and Cerebrovascular
Diseases of Ministry of Education, Gannan
Medical University, Ganzhou 341000, P. R. China
| | - Huiling Wen
- School
of Pharmacy, Gannan Medical University, Ganzhou 341000, P. R. China
| | - Lu Ouyang
- School
of Pharmacy, Gannan Medical University, Ganzhou 341000, P. R. China
| | - Nianhua Luo
- School
of Pharmacy, Gannan Medical University, Ganzhou 341000, P. R. China
| | - Jianhua Liao
- School
of Pharmacy, Gannan Medical University, Ganzhou 341000, P. R. China
| | - Renshi Luo
- School
of Pharmacy, Gannan Medical University, Ganzhou 341000, P. R. China
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29
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Xie C, Smaligo AJ, Song XR, Kwon O. Phosphorus-Based Catalysis. ACS CENTRAL SCIENCE 2021; 7:536-558. [PMID: 34056085 PMCID: PMC8155461 DOI: 10.1021/acscentsci.0c01493] [Citation(s) in RCA: 116] [Impact Index Per Article: 38.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/02/2020] [Indexed: 05/08/2023]
Abstract
Phosphorus-based organocatalysis encompasses several subfields that have undergone rapid growth in recent years. This Outlook gives an overview of its various aspects. In particular, we highlight key advances in three topics: nucleophilic phosphine catalysis, organophosphorus catalysis to bypass phosphine oxide waste, and organophosphorus compound-mediated single electron transfer processes. We briefly summarize five additional topics: chiral phosphoric acid catalysis, phosphine oxide Lewis base catalysis, iminophosphorane super base catalysis, phosphonium salt phase transfer catalysis, and frustrated Lewis pair catalysis. Although it is not catalytic in nature, we also discuss novel discoveries that are emerging in phosphorus(V) ligand coupling. We conclude with some ideas about the future of organophosphorus catalysis.
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Affiliation(s)
- Changmin Xie
- Department of Chemistry and Biochemistry, University of California, Los Angeles, Los Angeles, California 90095-1569, United States
| | - Andrew J. Smaligo
- Department of Chemistry and Biochemistry, University of California, Los Angeles, Los Angeles, California 90095-1569, United States
| | | | - Ohyun Kwon
- Department of Chemistry and Biochemistry, University of California, Los Angeles, Los Angeles, California 90095-1569, United States
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30
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Buttard F, Sharma J, Champagne PA. Recent advances in the stereoselective synthesis of acyclic all-carbon tetrasubstituted alkenes. Chem Commun (Camb) 2021; 57:4071-4088. [PMID: 33908457 DOI: 10.1039/d1cc00596k] [Citation(s) in RCA: 33] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Alkenes bearing four carbon-based groups are ubiquitous motifs in chemical sciences due to their various applications from medicinal to materials chemistry, and as chemical platforms for the synthesis of complex, chiral molecules. As such, tremendous research efforts are currently ongoing in order to develop general procedures for the challenging stereoselective synthesis of all-carbon tetrasubstituted alkenes, especially for acyclic structures. Since classical approaches to carbon-carbon double bonds are not suitable for the high steric demand around tetrasubstituted alkenes, a variety of unique approaches to access these privileged functional groups have been developed in recent years. This review article highlights the most significant developments in the field from 2007 to 2020, with an emphasis on the mechanisms and remaining limitations of these contemporary methods. Specifically, recent advances in internal alkyne carbofunctionalizations, in multicomponent couplings or other cross-couplings from nucleophilic or electrophilic alkenyl partners, and in the development of miscellaneous methods, are discussed.
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Affiliation(s)
- Floris Buttard
- Department of Chemistry and Environmental Science, New Jersey Institute of Technology, Newark (NJ), USA.
| | - Jyoti Sharma
- Department of Chemistry and Environmental Science, New Jersey Institute of Technology, Newark (NJ), USA.
| | - Pier Alexandre Champagne
- Department of Chemistry and Environmental Science, New Jersey Institute of Technology, Newark (NJ), USA.
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31
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Hirano K, Uchiyama M. Inter‐Element Boration Reactions of Carbon‐Carbon Multiple Bonds
via
Lewis‐Basic Activation of Boron Reagents. Adv Synth Catal 2021. [DOI: 10.1002/adsc.202001610] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Keiichi Hirano
- Graduate School of Pharmaceutical Sciences The University of Tokyo 7-3-1 Hongo, Bunkyo-ku Tokyo 113-0033 Japan
| | - Masanobu Uchiyama
- Graduate School of Pharmaceutical Sciences The University of Tokyo 7-3-1 Hongo, Bunkyo-ku Tokyo 113-0033 Japan
- Cluster of Pioneering Research (CPR) Advanced Elements Chemistry Laboratory, RIKEN 2-1 Hirosawa Wako-shi Saitama 351-0198 Japan
- Research Initiative for Supra-Materials (RISM) Shinshu University 3-15-1 Tokida Ueda Nagano 386-8567 Japan
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32
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Feng JJ, Mao W, Zhang L, Oestreich M. Activation of the Si–B interelement bond related to catalysis. Chem Soc Rev 2021; 50:2010-2073. [DOI: 10.1039/d0cs00965b] [Citation(s) in RCA: 52] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Covering the past seven years, this review comprehensively summarises the latest progress in the preparation and application of Si–B reagents, including the discussion of relevant reaction mechanisms.
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Affiliation(s)
- Jian-Jun Feng
- Institut für Chemie
- Technische Universität Berlin
- 10623 Berlin
- Germany
- College of Chemistry and Chemical Engineering
| | - Wenbin Mao
- Institut für Chemie
- Technische Universität Berlin
- 10623 Berlin
- Germany
| | - Liangliang Zhang
- Institut für Chemie
- Technische Universität Berlin
- 10623 Berlin
- Germany
| | - Martin Oestreich
- Institut für Chemie
- Technische Universität Berlin
- 10623 Berlin
- Germany
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33
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34
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Seifert F, Drikermann D, Steinmetzer J, Zi Y, Kupfer S, Vilotijevic I. Z-Selective phosphine promoted 1,4-reduction of ynoates and propynoic amides in the presence of water. Org Biomol Chem 2021; 19:6092-6097. [PMID: 34152338 DOI: 10.1039/d1ob00909e] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Phosphine-mediated reductions of substituted propynoic esters and amides in the presence of water yield the partially reduced α,β-unsaturated esters and amides with high Z-selectivity. The competitive in situ Z to E-isomerization of the product in some cases lowers the Z to E ratios of the isolated α,β-unsaturated carbonyl products. Reaction time and the amounts of phosphine and water in the reaction mixture are the key experimental factors which control the selectivity by preventing or reducing the rates of Z- to E-product isomerization. Close reaction monitoring enables isolation of the Z-alkenes with high selectivities. The computational results suggest that the reactions could be highly Z-selective owing to the stereoselective formation of the E-P-hydroxyphosphorane intermediate.
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Affiliation(s)
- Fabian Seifert
- Institute of Organic Chemistry and Macromolecular Chemistry, Friedrich Schiller University Jena, Humboldtstr. 10, 07743 Jena, Germany.
| | - Denis Drikermann
- Institute of Organic Chemistry and Macromolecular Chemistry, Friedrich Schiller University Jena, Humboldtstr. 10, 07743 Jena, Germany.
| | - Johannes Steinmetzer
- Institute for Physical Chemistry and Abbe Center of Photonics, Friedrich Schiller University Jena, Helmholtzweg 4, 07743, Jena, Germany
| | - You Zi
- Institute of Organic Chemistry and Macromolecular Chemistry, Friedrich Schiller University Jena, Humboldtstr. 10, 07743 Jena, Germany.
| | - Stephan Kupfer
- Institute for Physical Chemistry and Abbe Center of Photonics, Friedrich Schiller University Jena, Helmholtzweg 4, 07743, Jena, Germany
| | - Ivan Vilotijevic
- Institute of Organic Chemistry and Macromolecular Chemistry, Friedrich Schiller University Jena, Humboldtstr. 10, 07743 Jena, Germany.
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35
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Liang J, Wang B, Huang C, Ye X, Wen Y. Synthesis of Symmetrical ( E, E)-1,4-Diaryl-1,3-butadienes by One-Pot Method. CHINESE J ORG CHEM 2021. [DOI: 10.6023/cjoc202010008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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36
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Wang X, Wang Y, Huang W, Xia C, Wu L. Direct Synthesis of Multi(boronate) Esters from Alkenes and Alkynes via Hydroboration and Boration Reactions. ACS Catal 2020. [DOI: 10.1021/acscatal.0c03418] [Citation(s) in RCA: 41] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Xianjin Wang
- State Key Laboratory for Oxo Synthesis and Selective Oxidation, Suzhou Research Institute of LICP, Lanzhou Institute of Chemical Physics (LICP), Chinese Academy of Sciences, Lanzhou 730000, People’s Republic of China
- University of Chinese Academy of Sciences, Beijing 100049 People’s Republic of China
| | - Yue Wang
- State Key Laboratory for Oxo Synthesis and Selective Oxidation, Suzhou Research Institute of LICP, Lanzhou Institute of Chemical Physics (LICP), Chinese Academy of Sciences, Lanzhou 730000, People’s Republic of China
| | - Wei Huang
- CAS Key Laboratory of Bio-based Materials, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao 266101, People’s Republic of China
| | - Chungu Xia
- State Key Laboratory for Oxo Synthesis and Selective Oxidation, Suzhou Research Institute of LICP, Lanzhou Institute of Chemical Physics (LICP), Chinese Academy of Sciences, Lanzhou 730000, People’s Republic of China
| | - Lipeng Wu
- State Key Laboratory for Oxo Synthesis and Selective Oxidation, Suzhou Research Institute of LICP, Lanzhou Institute of Chemical Physics (LICP), Chinese Academy of Sciences, Lanzhou 730000, People’s Republic of China
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37
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Hirano K, Morimoto K, Fujioka S, Miyamoto K, Muranaka A, Uchiyama M. Nucleophilic Diboration Strategy Targeting Diversified 1‐Boraphenarene Architectures. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202009242] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Keiichi Hirano
- Graduate School of Pharmaceutical Sciences The University of Tokyo 7-3-1 Hongo Bunkyo-ku Tokyo 113-0033 Japan
| | - Kensuke Morimoto
- Graduate School of Pharmaceutical Sciences The University of Tokyo 7-3-1 Hongo Bunkyo-ku Tokyo 113-0033 Japan
| | - Shota Fujioka
- Graduate School of Pharmaceutical Sciences The University of Tokyo 7-3-1 Hongo Bunkyo-ku Tokyo 113-0033 Japan
| | - Kazunori Miyamoto
- Graduate School of Pharmaceutical Sciences The University of Tokyo 7-3-1 Hongo Bunkyo-ku Tokyo 113-0033 Japan
| | - Atsuya Muranaka
- Cluster of Pioneering Research (CPR) Advanced Elements Chemistry Laboratory RIKEN 2-1 Hirosawa Wako-shi Saitama 351-0198 Japan
| | - Masanobu Uchiyama
- Graduate School of Pharmaceutical Sciences The University of Tokyo 7-3-1 Hongo Bunkyo-ku Tokyo 113-0033 Japan
- Cluster of Pioneering Research (CPR) Advanced Elements Chemistry Laboratory RIKEN 2-1 Hirosawa Wako-shi Saitama 351-0198 Japan
- Research Initiative for Supra-Materials (RISM) Shinshu University 3-15-1 Tokida Ueda Nagano 386-8567 Japan
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38
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Tani T, Takahashi N, Sawatsugawa Y, Osano M, Tsuchimoto T. Stepwise Suzuki−Miyaura Cross‐Coupling of Triborylalkenes Derived from Alkynyl−B(dan)s: Regioselective and Flexible Synthesis of Tetrasubstituted Alkenes. Adv Synth Catal 2020. [DOI: 10.1002/adsc.202001116] [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)
- Tomohiro Tani
- Department of Applied Chemistry School of Science and Technology Meiji University, 1-1-1 Higashimita, Tama-ku Kawasaki 214-8571 Japan
| | - Naomi Takahashi
- Department of Applied Chemistry School of Science and Technology Meiji University, 1-1-1 Higashimita, Tama-ku Kawasaki 214-8571 Japan
| | - Yuuki Sawatsugawa
- Department of Applied Chemistry School of Science and Technology Meiji University, 1-1-1 Higashimita, Tama-ku Kawasaki 214-8571 Japan
| | - Mana Osano
- Department of Applied Chemistry School of Science and Technology Meiji University, 1-1-1 Higashimita, Tama-ku Kawasaki 214-8571 Japan
| | - Teruhisa Tsuchimoto
- Department of Applied Chemistry School of Science and Technology Meiji University, 1-1-1 Higashimita, Tama-ku Kawasaki 214-8571 Japan
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39
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Fujimoto H, Kodama T, Yamanaka M, Tobisu M. Phosphine-Catalyzed Intermolecular Acylfluorination of Alkynes via a P(V) Intermediate. J Am Chem Soc 2020; 142:17323-17328. [DOI: 10.1021/jacs.0c08928] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Hayato Fujimoto
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Suita, Osaka 565-0871, Japan
| | - Takuya Kodama
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Suita, Osaka 565-0871, Japan
| | - Masahiro Yamanaka
- Department of Chemistry, Faculty of Science, Rikkyo University, 3-34-1 Nishi-Ikebukuro, Toshima-ku, Tokyo 171-8501, Japan
| | - Mamoru Tobisu
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Suita, Osaka 565-0871, Japan
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40
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Hirano K, Morimoto K, Fujioka S, Miyamoto K, Muranaka A, Uchiyama M. Nucleophilic Diboration Strategy Targeting Diversified 1‐Boraphenarene Architectures. Angew Chem Int Ed Engl 2020; 59:21448-21453. [DOI: 10.1002/anie.202009242] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2020] [Indexed: 01/04/2023]
Affiliation(s)
- Keiichi Hirano
- Graduate School of Pharmaceutical Sciences The University of Tokyo 7-3-1 Hongo Bunkyo-ku Tokyo 113-0033 Japan
| | - Kensuke Morimoto
- Graduate School of Pharmaceutical Sciences The University of Tokyo 7-3-1 Hongo Bunkyo-ku Tokyo 113-0033 Japan
| | - Shota Fujioka
- Graduate School of Pharmaceutical Sciences The University of Tokyo 7-3-1 Hongo Bunkyo-ku Tokyo 113-0033 Japan
| | - Kazunori Miyamoto
- Graduate School of Pharmaceutical Sciences The University of Tokyo 7-3-1 Hongo Bunkyo-ku Tokyo 113-0033 Japan
| | - Atsuya Muranaka
- Cluster of Pioneering Research (CPR) Advanced Elements Chemistry Laboratory RIKEN 2-1 Hirosawa Wako-shi Saitama 351-0198 Japan
| | - Masanobu Uchiyama
- Graduate School of Pharmaceutical Sciences The University of Tokyo 7-3-1 Hongo Bunkyo-ku Tokyo 113-0033 Japan
- Cluster of Pioneering Research (CPR) Advanced Elements Chemistry Laboratory RIKEN 2-1 Hirosawa Wako-shi Saitama 351-0198 Japan
- Research Initiative for Supra-Materials (RISM) Shinshu University 3-15-1 Tokida Ueda Nagano 386-8567 Japan
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41
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Tandon N, Luxami V, Tandon R, Paul K. Recent Advances in the Synthesis of Tamoxifen and Analogues in Medicinal Chemistry. ASIAN J ORG CHEM 2020. [DOI: 10.1002/ajoc.202000308] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Nitin Tandon
- School of Chemical Engineering and Physical Sciences Lovely Professional University Phagwara 144411 India
| | - Vijay Luxami
- School of Chemistry and Biochemistry Thapar Institute of Engineering and Technology Patiala 147 001 India
| | - Runjhun Tandon
- School of Chemical Engineering and Physical Sciences Lovely Professional University Phagwara 144411 India
| | - Kamaldeep Paul
- School of Chemistry and Biochemistry Thapar Institute of Engineering and Technology Patiala 147 001 India
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42
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Moberg C. Silylboranes as Powerful Tools in Organic Synthesis: Stereo- and Regioselective Reactions with 1,n-Enynes. SYNTHESIS-STUTTGART 2020. [DOI: 10.1055/s-0040-1707247] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
Bismetalated alkenes, accessible by element–element addition to alkynes, are valuable building blocks in organic synthesis, providing wide opportunities for divergent synthesis. Silaboration of alkynes with a pendant olefinic group, catalyzed by group 10 metal complexes, and subsequent transformation of the silicon and boron functional groups give access to densely functionalized 1,3-dienes and 1,3,5-trienes with defined stereo- and regiochemistry, 1,2-dienes, and carbocyclic and heterocyclic products.1 Introduction2 Background3 Reactions with 1,3-Enynes4 Cyclization 1,6-Enynes5 Cyclization 1,7-Enynes6 Cyclization of 1,n-Enynes (n > 7)7 Cyclization of Dienynes and Enediynes8 Cyclization of 1,6-Diynes9 Conclusions
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Affiliation(s)
- Christina Moberg
- Department of Chemistry, Organic Chemistry, KTH Royal Institute of Technology
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43
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Fritzemeier RG, Nekvinda J, Vogels CM, Rosenblum CA, Slebodnick C, Westcott SA, Santos WL. Organocatalytic
trans
Phosphinoboration of Internal Alkynes. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202006096] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
| | - Jan Nekvinda
- Department of Chemistry Virginia Tech 900 West Campus Drive Blacksburg VA 24061 USA
| | - Christopher M. Vogels
- Department of Chemistry and Biochemistry Mount Allison University 63C York Street Sackville New Brunswick E4L 1G8 Canada
| | - Carol Ann Rosenblum
- Department of Chemistry Virginia Tech 900 West Campus Drive Blacksburg VA 24061 USA
| | - Carla Slebodnick
- Department of Chemistry Virginia Tech 900 West Campus Drive Blacksburg VA 24061 USA
| | - Stephen A. Westcott
- Department of Chemistry and Biochemistry Mount Allison University 63C York Street Sackville New Brunswick E4L 1G8 Canada
| | - Webster L. Santos
- Department of Chemistry Virginia Tech 900 West Campus Drive Blacksburg VA 24061 USA
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44
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Fritzemeier RG, Nekvinda J, Vogels CM, Rosenblum CA, Slebodnick C, Westcott SA, Santos WL. Organocatalytic
trans
Phosphinoboration of Internal Alkynes. Angew Chem Int Ed Engl 2020; 59:14358-14362. [PMID: 32406101 DOI: 10.1002/anie.202006096] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2020] [Indexed: 01/10/2023]
Affiliation(s)
| | - Jan Nekvinda
- Department of Chemistry Virginia Tech 900 West Campus Drive Blacksburg VA 24061 USA
| | - Christopher M. Vogels
- Department of Chemistry and Biochemistry Mount Allison University 63C York Street Sackville New Brunswick E4L 1G8 Canada
| | - Carol Ann Rosenblum
- Department of Chemistry Virginia Tech 900 West Campus Drive Blacksburg VA 24061 USA
| | - Carla Slebodnick
- Department of Chemistry Virginia Tech 900 West Campus Drive Blacksburg VA 24061 USA
| | - Stephen A. Westcott
- Department of Chemistry and Biochemistry Mount Allison University 63C York Street Sackville New Brunswick E4L 1G8 Canada
| | - Webster L. Santos
- Department of Chemistry Virginia Tech 900 West Campus Drive Blacksburg VA 24061 USA
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45
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Liu X, Ming W, Luo X, Friedrich A, Maier J, Radius U, Santos WL, Marder TB. Regio- and Stereoselective Synthesis of 1,1-Diborylalkenes via Brønsted Base-Catalyzed Mixed Diboration of Alkynyl Esters and Amides with BpinBdan. European J Org Chem 2020; 2020:1941-1946. [PMID: 32362780 PMCID: PMC7187442 DOI: 10.1002/ejoc.202000128] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2020] [Indexed: 01/06/2023]
Abstract
The NaOtBu-catalyzed mixed 1,1-diboration of terminal alkynes using the unsymmetrical diboron reagent BpinBdan (pin = pinacolato; dan = 1,8-diaminonaphthalene) proceeds in a regio- and stereoselective fashion affording moderate to high yields of 1,1-diborylalkenes bearing orthogonal boron protecting groups. It is applicable to gram-scale synthesis without loss of yield or selectivity. The mixed 1,1-diborylalkene products can be utilized in Suzuki-Miyaura cross-coupling reactions which take place selectivly at the C-B site. DFT calculations suggest the NaOtBu-catalyzed mixed 1,1-diboration of alkynes occurs through deprotonation of the terminal alkyne, stepwise addition of BpinBdan to the terminal carbon followed by protonation with tBuOH. Experimentally observed selective formation of (Z)-diborylalkenes is supported by our theoretical studies.
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Affiliation(s)
- Xiaocui Liu
- Institute of Inorganic Chemistry and Institute for Sustainable Chemistry & Catalysis with BoronJulius‐Maximilians‐Universität WürzburgAm Hubland97074WürzburgGermany
| | - Wenbo Ming
- Institute of Inorganic Chemistry and Institute for Sustainable Chemistry & Catalysis with BoronJulius‐Maximilians‐Universität WürzburgAm Hubland97074WürzburgGermany
| | - Xiaoling Luo
- Institute of Inorganic Chemistry and Institute for Sustainable Chemistry & Catalysis with BoronJulius‐Maximilians‐Universität WürzburgAm Hubland97074WürzburgGermany
- Chongqing Key Laboratory of Inorganic Functional MaterialsCollege of ChemistryChongqing Normal University401331ChongqingChina
| | - Alexandra Friedrich
- Institute of Inorganic Chemistry and Institute for Sustainable Chemistry & Catalysis with BoronJulius‐Maximilians‐Universität WürzburgAm Hubland97074WürzburgGermany
| | - Jan Maier
- Institute of Inorganic Chemistry and Institute for Sustainable Chemistry & Catalysis with BoronJulius‐Maximilians‐Universität WürzburgAm Hubland97074WürzburgGermany
| | - Udo Radius
- Institute of Inorganic Chemistry and Institute for Sustainable Chemistry & Catalysis with BoronJulius‐Maximilians‐Universität WürzburgAm Hubland97074WürzburgGermany
| | - Webster L. Santos
- Department of ChemistryCollege of ChemistryVirginia Tech900 West Campus Drive24061BlacksburgVirginiaUSA
| | - Todd B. Marder
- Institute of Inorganic Chemistry and Institute for Sustainable Chemistry & Catalysis with BoronJulius‐Maximilians‐Universität WürzburgAm Hubland97074WürzburgGermany
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46
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Rao MLN, Murty VN, Nand S. Rapid Bis-Coupling Reactivity with Triarylbismuth Reagents: Synthesis of Structurally Diverse Scaffolds and Step-economic Convergent Synthesis of Quebecol. European J Org Chem 2020. [DOI: 10.1002/ejoc.201901830] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Maddali L. N. Rao
- Department of Chemistry; Indian Institute of Technology Kanpur; 208016 Kanpur India
| | - Venneti N. Murty
- Department of Chemistry; Indian Institute of Technology Kanpur; 208016 Kanpur India
| | - Sachchida Nand
- Department of Chemistry; Indian Institute of Technology Kanpur; 208016 Kanpur India
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47
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Gu Y, Duan Y, Shen Y, Martin R. Stereoselective Base‐Catalyzed 1,1‐Silaboration of Terminal Alkynes. Angew Chem Int Ed Engl 2020; 59:2061-2065. [DOI: 10.1002/anie.201913544] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2019] [Indexed: 02/06/2023]
Affiliation(s)
- Yiting Gu
- Institute of Chemical Research of Catalonia (ICIQ)The Barcelona Institute of Science and Technology Av. Països Catalans 16 43007 Tarragona Spain
| | - Yaya Duan
- Institute of Chemical Research of Catalonia (ICIQ)The Barcelona Institute of Science and Technology Av. Països Catalans 16 43007 Tarragona Spain
| | - Yangyang Shen
- Institute of Chemical Research of Catalonia (ICIQ)The Barcelona Institute of Science and Technology Av. Països Catalans 16 43007 Tarragona Spain
| | - Ruben Martin
- Institute of Chemical Research of Catalonia (ICIQ)The Barcelona Institute of Science and Technology Av. Països Catalans 16 43007 Tarragona Spain
- Catalan Institution for Research and Advanced Studies (ICREA) Passeig Lluïs Companys, 23 08010 Barcelona Spain
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48
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Gu Y, Duan Y, Shen Y, Martin R. Stereoselective Base‐Catalyzed 1,1‐Silaboration of Terminal Alkynes. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.201913544] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Yiting Gu
- Institute of Chemical Research of Catalonia (ICIQ)The Barcelona Institute of Science and Technology Av. Països Catalans 16 43007 Tarragona Spain
| | - Yaya Duan
- Institute of Chemical Research of Catalonia (ICIQ)The Barcelona Institute of Science and Technology Av. Països Catalans 16 43007 Tarragona Spain
| | - Yangyang Shen
- Institute of Chemical Research of Catalonia (ICIQ)The Barcelona Institute of Science and Technology Av. Països Catalans 16 43007 Tarragona Spain
| | - Ruben Martin
- Institute of Chemical Research of Catalonia (ICIQ)The Barcelona Institute of Science and Technology Av. Països Catalans 16 43007 Tarragona Spain
- Catalan Institution for Research and Advanced Studies (ICREA) Passeig Lluïs Companys, 23 08010 Barcelona Spain
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49
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Liu X, Ming W, Friedrich A, Kerner F, Marder TB. Copper-Catalyzed Triboration of Terminal Alkynes Using B 2 pin 2 : Efficient Synthesis of 1,1,2-Triborylalkenes. Angew Chem Int Ed Engl 2020; 59:304-309. [PMID: 31502712 PMCID: PMC6972586 DOI: 10.1002/anie.201908466] [Citation(s) in RCA: 40] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2019] [Revised: 08/31/2019] [Indexed: 02/04/2023]
Abstract
We report herein the catalytic triboration of terminal alkynes with B2 pin2 (bis(pinacolato)diboron) using readily available Cu(OAc)2 and Pn Bu3 . Various 1,1,2-triborylalkenes, a class of compounds that have been demonstrated to be potential matrix metalloproteinase (MMP-2) inhibitors, were obtained directly in moderate to good yields. The process features mild reaction conditions, a broad substrate scope, and good functional group tolerance. This copper-catalyzed reaction can be conducted on a gram scale to produce the corresponding 1,1,2-triborylalkenes in modest yields. The utility of these products was demonstrated by further transformations of the C-B bonds to prepare gem-dihaloborylalkenes (F, Cl, Br), monohaloborylalkenes (Cl, Br), and trans-diaryldiborylalkenes, which serve as important synthons and have previously been challenging to prepare.
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Affiliation(s)
- Xiaocui Liu
- Institute of Inorganic Chemistry and Institute for Sustainable Chemistry & Catalysis with BoronJulius-Maximilians-Universität WürzburgAm Hubland97074WürzburgGermany
| | - Wenbo Ming
- Institute of Inorganic Chemistry and Institute for Sustainable Chemistry & Catalysis with BoronJulius-Maximilians-Universität WürzburgAm Hubland97074WürzburgGermany
| | - Alexandra Friedrich
- Institute of Inorganic Chemistry and Institute for Sustainable Chemistry & Catalysis with BoronJulius-Maximilians-Universität WürzburgAm Hubland97074WürzburgGermany
| | - Florian Kerner
- Institute of Inorganic Chemistry and Institute for Sustainable Chemistry & Catalysis with BoronJulius-Maximilians-Universität WürzburgAm Hubland97074WürzburgGermany
| | - Todd B. Marder
- Institute of Inorganic Chemistry and Institute for Sustainable Chemistry & Catalysis with BoronJulius-Maximilians-Universität WürzburgAm Hubland97074WürzburgGermany
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50
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Saptal VB, Wang R, Park S. Recent advances in transition metal-free catalytic hydroelementation (E = B, Si, Ge, and Sn) of alkynes. RSC Adv 2020; 10:43539-43565. [PMID: 35519696 PMCID: PMC9058465 DOI: 10.1039/d0ra07768b] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2020] [Accepted: 11/15/2020] [Indexed: 12/21/2022] Open
Abstract
This review describes the recent advances in the transition metal-free hydroelementation of alkynes with various metalloid hydrides.
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Affiliation(s)
- Vitthal B. Saptal
- Department of Chemistry
- Guangdong Technion Israel Institute of Technology
- China
| | - Ruibin Wang
- Department of Chemistry
- Guangdong Technion Israel Institute of Technology
- China
| | - Sehoon Park
- Department of Chemistry
- Guangdong Technion Israel Institute of Technology
- China
- Technion-Israel Institute of Technology
- 32000 Haifa
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