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Nandy S, Paul S, Das KK, Kumar P, Ghorai D, Panda S. Synthesis and reactivity of alkynyl boron compounds. Org Biomol Chem 2021; 19:7276-7297. [PMID: 34374405 DOI: 10.1039/d1ob00465d] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Over the last century, there have been considerable developments in organoboron chemistry due to the stability, non-toxicity, and easy commercial availability of various boronic esters. Several organoboron reagents have emerged and play an increasingly important role in everyday organic synthesis. Among them, alkynyl boron compounds have attracted significant attention due to their easy synthesis and diverse reactivity. In this review, we summarize the advancement of research on alkynyl boron compounds, highlighting their importance in the synthesis of valuable compounds.
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Affiliation(s)
- Soumilee Nandy
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur 721302, India.
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2
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Murray SA, Luc ECM, Meek SJ. Synthesis of Alkenyl Boronates from Epoxides with Di-[B(pin)]-methane via Pd-Catalyzed Dehydroboration. Org Lett 2018; 20:469-472. [PMID: 29319323 DOI: 10.1021/acs.orglett.7b03853] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A practical and broadly applicable catalytic method for the synthesis of (E)-alkenylborons is presented. Reactions are promoted by [Pd(Cl)(η3-C3H5)]2 and proceed by the dehydroboration of cyclic borates. Through the use of epoxides and readily available di-B(pin)-methane (pin = pinacolato), a range of allylic alcohol-containing alkenyl boronates, including those that contain a tertiary alcohol, may be prepared in up to 75% yield and >20:1 E/Z.
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Affiliation(s)
- Stephanie A Murray
- Department of Chemistry, The University of North Carolina , Chapel Hill, North Carolina 27599-3290, United States
| | - Eugenia C M Luc
- Department of Chemistry, The University of North Carolina , Chapel Hill, North Carolina 27599-3290, United States
| | - Simon J Meek
- Department of Chemistry, The University of North Carolina , Chapel Hill, North Carolina 27599-3290, United States
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Yang X, Cheng F, Kou YD, Pang S, Shen YC, Huang YY, Shibata N. Catalytic Asymmetric 1,3-Dipolar Cycloaddition of β-Fluoroalkylated α,β-Unsaturated 2-Pyridylsulfones with Nitrones for Chiral Fluoroalkylated Isoxazolidines and γ-Amino Alcohols. Angew Chem Int Ed Engl 2017; 56:1510-1514. [PMID: 28067017 DOI: 10.1002/anie.201610605] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2016] [Revised: 12/12/2016] [Indexed: 11/06/2022]
Abstract
2-Pyridylsulfone- and fluoroalkylated group-activated olefins underwent highly efficient diastereo- and enantioselective 1,3-dipolar cycloadditions across various aromatic and aliphatic nitrones in the presence of a chiral NiII /bis(oxazoline) catalyst. The process was tuned by 4 Å molecular sieves, chiral bis(oxazoline) ligands, reaction solvents, and temperature. A wide array of optically pure fluoroalkylated isoxazolidines were obtained, thus facilitating the asymmetric synthesis of an enantioenriched α-trifluoromethylated γ-amino alcohol in gram-scale and a trifluoromethylated derivative of 1,3-oxazinan-2-one with potential pharmaceutical interest. A stereochemical model, based on the absolute configuration of one adduct and some control experiments, was postulated to account for the observed endo- and enantioselectivity.
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Affiliation(s)
- Xing Yang
- Department of Chemistry, School of Chemistry, Chemical Engineering and Life Science, Wuhan University of Technology, Wuhan, 430070, P.R. China
| | - Feng Cheng
- Department of Chemistry, School of Chemistry, Chemical Engineering and Life Science, Wuhan University of Technology, Wuhan, 430070, P.R. China
| | - Ying-Da Kou
- Department of Chemistry, School of Chemistry, Chemical Engineering and Life Science, Wuhan University of Technology, Wuhan, 430070, P.R. China
| | - Shuai Pang
- Department of Chemistry, School of Chemistry, Chemical Engineering and Life Science, Wuhan University of Technology, Wuhan, 430070, P.R. China
| | - Yong-Cun Shen
- Department of Chemistry, School of Chemistry, Chemical Engineering and Life Science, Wuhan University of Technology, Wuhan, 430070, P.R. China
| | - Yi-Yong Huang
- Department of Chemistry, School of Chemistry, Chemical Engineering and Life Science, Wuhan University of Technology, Wuhan, 430070, P.R. China
| | - Norio Shibata
- Department of Nanopharmaceutical Sciences, Department of Life Science and Applied Chemistry, Nagoya Institute of Technology, Gokiso, Showa-ku, Nagoya, 466-8555, Japan
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Yang X, Cheng F, Kou YD, Pang S, Shen YC, Huang YY, Shibata N. Catalytic Asymmetric 1,3-Dipolar Cycloaddition of β-Fluoroalkylated α,β-Unsaturated 2-Pyridylsulfones with Nitrones for Chiral Fluoroalkylated Isoxazolidines and γ-Amino Alcohols. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201610605] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Xing Yang
- Department of Chemistry; School of Chemistry, Chemical Engineering and Life Science; Wuhan University of Technology; Wuhan 430070 P.R. China
| | - Feng Cheng
- Department of Chemistry; School of Chemistry, Chemical Engineering and Life Science; Wuhan University of Technology; Wuhan 430070 P.R. China
| | - Ying-Da Kou
- Department of Chemistry; School of Chemistry, Chemical Engineering and Life Science; Wuhan University of Technology; Wuhan 430070 P.R. China
| | - Shuai Pang
- Department of Chemistry; School of Chemistry, Chemical Engineering and Life Science; Wuhan University of Technology; Wuhan 430070 P.R. China
| | - Yong-Cun Shen
- Department of Chemistry; School of Chemistry, Chemical Engineering and Life Science; Wuhan University of Technology; Wuhan 430070 P.R. China
| | - Yi-Yong Huang
- Department of Chemistry; School of Chemistry, Chemical Engineering and Life Science; Wuhan University of Technology; Wuhan 430070 P.R. China
| | - Norio Shibata
- Department of Nanopharmaceutical Sciences; Department of Life Science and Applied Chemistry; Nagoya Institute of Technology; Gokiso, Showa-ku Nagoya 466-8555 Japan
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Guo W, Martínez-Rodríguez L, Kuniyil R, Martin E, Escudero-Adán EC, Maseras F, Kleij AW. Stereoselective and Versatile Preparation of Tri- and Tetrasubstituted Allylic Amine Scaffolds under Mild Conditions. J Am Chem Soc 2016; 138:11970-8. [DOI: 10.1021/jacs.6b07382] [Citation(s) in RCA: 124] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Wusheng Guo
- Institute
of Chemical Research of Catalonia (ICIQ), Barcelona Institute of Science and Technology, Av. Països Catalans 16, 43007 Tarragona, Spain
| | - Luis Martínez-Rodríguez
- Institute
of Chemical Research of Catalonia (ICIQ), Barcelona Institute of Science and Technology, Av. Països Catalans 16, 43007 Tarragona, Spain
| | - Rositha Kuniyil
- Institute
of Chemical Research of Catalonia (ICIQ), Barcelona Institute of Science and Technology, Av. Països Catalans 16, 43007 Tarragona, Spain
| | - Eddy Martin
- Institute
of Chemical Research of Catalonia (ICIQ), Barcelona Institute of Science and Technology, Av. Països Catalans 16, 43007 Tarragona, Spain
| | - Eduardo C. Escudero-Adán
- Institute
of Chemical Research of Catalonia (ICIQ), Barcelona Institute of Science and Technology, Av. Països Catalans 16, 43007 Tarragona, Spain
| | - Feliu Maseras
- Institute
of Chemical Research of Catalonia (ICIQ), Barcelona Institute of Science and Technology, Av. Països Catalans 16, 43007 Tarragona, Spain
- Departament
de Química, Universitat Autònoma de Barcelona, 08193 Bellaterra, Catalonia, Spain
| | - Arjan W. Kleij
- Institute
of Chemical Research of Catalonia (ICIQ), Barcelona Institute of Science and Technology, Av. Països Catalans 16, 43007 Tarragona, Spain
- Catalan Institute of Research and Advanced Studies (ICREA), Pg. Lluís Companys 23, 08010 Barcelona, Spain
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García-Rubia A, Romero-Revilla JA, Mauleón P, Gómez Arrayás R, Carretero JC. Cu-Catalyzed Silylation of Alkynes: A Traceless 2-Pyridylsulfonyl Controller Allows Access to Either Regioisomer on Demand. J Am Chem Soc 2015; 137:6857-65. [DOI: 10.1021/jacs.5b02667] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
| | | | - Pablo Mauleón
- Universidad Autónoma de Madrid, Cantoblanco, 28049 Madrid, Spain
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Tang HT, Zhou YB, Zhu Y, Sun HC, Lin M, Zhan ZP. Base-Catalyzed NN Bond Cleavage of Hydrazones: Synthesis of α-Amino Ketones. Chem Asian J 2014; 9:1278-81. [DOI: 10.1002/asia.201400037] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2014] [Revised: 01/17/2014] [Indexed: 12/12/2022]
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Kim BS, Hussain MM, Norrby PO, Walsh PJ. Breaking Conjugation: Unusual Regioselectivity with 2-Substituted Allylic Substrates in the Tsuji-Trost Reaction. Chem Sci 2014; 5:1241-1250. [PMID: 24910767 DOI: 10.1039/c3sc53035c] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
η3-Allyl palladium complexes are key intermediates in Tsuji-Trost allylic substitution reactions. It is well known that (η3-1-aryl-3-alkyl substituted allyl)Pd intermediates result in nucleophilic attack at the alkyl substituted terminus. In contrast, the chemistry of (η3-1,2,3-trisubstituted allyl)Pd intermediates is relatively unexplored. Herein we probe the regioselectivity with 1,2,3-trisubstituted allylic substrates in Tsuji-Trost allylic substitution reactions. DFT investigation of cationic (η3-1-Ph-2-B(pin)-3-alkyl-allyl)Pd(PPh3)2 intermediates predict that nucleophilic attack should occur preferentially on anti-allyls rather than the syn-isomers to generate benzylic substitution products under Curtin-Hammett conditions. Experimentally, systematic studies with 1,2,3-trisubstituted allylic substrates revealed that a Linear Free Energy Relationship (LFER) is observed when Charton steric parameters of the C-2 substituents are plotted against the log of the ratio of regioisomers. Bulkier C-2 substituents in 1,2,3-trisubstituted η3-allyl palladium intermediates provide stronger preference for nucleophilic attack at anti-oriented benzylic termini. Additionally, the geometry of 1,4-elimination products supports the presence of anti-allyl palladium intermediates.
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Affiliation(s)
- Byeong-Seon Kim
- P. Roy and Diana T. Vagelos Laboratories, Department of Chemistry, University of Pennsylvania, 231 S. 34 Street, Philadelphia, PA 19104-6323, USA; ; ; Tel: +1-2155732875
| | - Mahmud M Hussain
- P. Roy and Diana T. Vagelos Laboratories, Department of Chemistry, University of Pennsylvania, 231 S. 34 Street, Philadelphia, PA 19104-6323, USA; ; ; Tel: +1-2155732875
| | - Per-Ola Norrby
- University of Gothenburg, Department of Chemistry and Molecular Biology, Kemigården 4, #8076, SE-412 96 Göteborg, Sweden; ; Pharmaceutical Development, Global Medicines Development, AstraZeneca, Pepparedsleden 1, SE-431 83 Mölndal, Sweden
| | - Patrick J Walsh
- P. Roy and Diana T. Vagelos Laboratories, Department of Chemistry, University of Pennsylvania, 231 S. 34 Street, Philadelphia, PA 19104-6323, USA; ; ; Tel: +1-2155732875
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Hussain N, Hussain MM, Carroll PJ, Walsh PJ. Chemo- and diastereoselective tandem dual oxidation of B(pin)-substituted allylic alcohols: synthesis of B(pin)-substituted epoxy alcohols, 2-keto-anti-1,3-diols and dihydroxy-tetrahydrofuran-3-ones. Chem Sci 2013. [DOI: 10.1039/c3sc51616d] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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Roosen PC, Kallepalli VA, Chattopadhyay B, Singleton DA, Maleczka RE, Smith MR. Outer-sphere direction in iridium C-H borylation. J Am Chem Soc 2012; 134:11350-3. [PMID: 22703452 DOI: 10.1021/ja303443m] [Citation(s) in RCA: 150] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
The NHBoc group affords ortho selective C-H borylations in arenes and alkenes. Experimental and computational studies support an outer sphere mechanism where the N-H proton hydrogen bonds to a boryl ligand oxygen. The regioselectivities are unique and complement those of directed ortho metalations.
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Affiliation(s)
- Philipp C Roosen
- Department of Chemistry, Michigan State University, East Lansing, Michigan 48824-1322, USA
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Blay G, Escamilla A, Hernández-Olmos V, Pedro JR, Sanz-Marco A. Enantioselective copper-aminopyridine-catalyzed aza-Henry reaction with chelating N-(2-pyridyl)sulfonyl imines. Chirality 2012; 24:441-50. [DOI: 10.1002/chir.22009] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2011] [Accepted: 12/29/2011] [Indexed: 11/06/2022]
Affiliation(s)
- Gonzalo Blay
- Departament de Química Orgànica, Facultat de Química; Universitat de València; Burjassot; Spain
| | - Ana Escamilla
- Departament de Química Orgànica, Facultat de Química; Universitat de València; Burjassot; Spain
| | - Víctor Hernández-Olmos
- Departament de Química Orgànica, Facultat de Química; Universitat de València; Burjassot; Spain
| | - José R. Pedro
- Departament de Química Orgànica, Facultat de Química; Universitat de València; Burjassot; Spain
| | - Amparo Sanz-Marco
- Departament de Química Orgànica, Facultat de Química; Universitat de València; Burjassot; Spain
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