1
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Chen Z, Nie B, Li X, Liu T, Li C, Huang J. Ligand-controlled regiodivergent Ni-catalyzed trans-hydroboration/carboboration of internal alkynes with B 2pin 2. Chem Sci 2024; 15:2236-2242. [PMID: 38332812 PMCID: PMC10848681 DOI: 10.1039/d3sc04184k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2023] [Accepted: 01/04/2024] [Indexed: 02/10/2024] Open
Abstract
Unprecedented regioselective trans-hydroboration and carboboration of unbiased electronically internal alkynes were realized via a nickel catalysis system with the aid of the directing group strategy. Furthermore, the excellent α- and β-regioselectivity could be accurately switched by the nitrogen ligand (terpy) and phosphine ligand (Xantphos). Mechanistic studies provided an insight into the rational reaction process, that underwent the cis-to-trans isomerization of alkenyl nickel species. This transformation not only expands the scope of transition-metal-catalyzed boration of internal alkynes but also, more particularly, portrays the vast prospects of the directing group strategy in the selective functionalization of unactivated alkynes.
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Affiliation(s)
- Zunsheng Chen
- Key Laboratory of Prevention and Treatment of Cardiovascular and Cerebrovascular Diseases (Gannan Medical University), Ministry of Education, School of Pharmacy, Gannan Medical University Ganzhou 341000 P. R. China
| | - Biao Nie
- State Key Laboratory of Anti-Infective Drug Development, Sunshine Lake Pharma Company, Ltd Dongguan 523871 P. R. China
| | - Xiaoning Li
- Key Laboratory of Prevention and Treatment of Cardiovascular and Cerebrovascular Diseases (Gannan Medical University), Ministry of Education, School of Pharmacy, Gannan Medical University Ganzhou 341000 P. R. China
| | - Teng Liu
- Key Laboratory of Prevention and Treatment of Cardiovascular and Cerebrovascular Diseases (Gannan Medical University), Ministry of Education, School of Pharmacy, Gannan Medical University Ganzhou 341000 P. R. China
| | - Chunsheng Li
- School of Chemistry and Chemical Engineering, Zhaoqing University Zhaoqing 526060 P. R. China
| | - Jiuzhong Huang
- Key Laboratory of Prevention and Treatment of Cardiovascular and Cerebrovascular Diseases (Gannan Medical University), Ministry of Education, School of Pharmacy, Gannan Medical University Ganzhou 341000 P. R. China
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2
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Duran Arroyo V, Arevalo R. Tandem manganese catalysis for the chemo-, regio-, and stereoselective hydroboration of terminal alkynes: in situ precatalyst activation as a key to enhanced chemoselectivity. RSC Adv 2024; 14:5514-5523. [PMID: 38352676 PMCID: PMC10863604 DOI: 10.1039/d3ra08747f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2023] [Accepted: 02/05/2024] [Indexed: 02/16/2024] Open
Abstract
The manganese(ii) complex [Mn(iPrPNP)Cl2] (iPrPNP = 2,6-bis(diisopropylphosphinomethyl)pyridine) was found to catalyze the stereo- and regioselective hydroboration of terminal alkynes employing HBPin (pinacolborane). In the absence of in situ activators, mixtures of alkynylboronate and E-alkenylboronate esters were formed, whereas when NaHBEt3 was employed as the in situ activator, E-alkenylboronate esters were exclusively accessed. Mechanistic studies revealed a tandem C-H borylation/semihydrogenation pathway accounting for the formation of the products. Stoichiometric reactions hint toward reaction of a Mn-H active species with the terminal alkyne as the catalyst entry pathway to the cycle, whereas reaction with HBPin led to catalyst deactivation.
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Affiliation(s)
- Victor Duran Arroyo
- Department of Chemistry and Biochemistry, University of California 5200 North Lake Road 95343 Merced California USA
| | - Rebeca Arevalo
- Department of Chemistry and Biochemistry, University of California 5200 North Lake Road 95343 Merced California USA
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3
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Ramachandran PV, Hamann HJ. Dehydroborylation of Terminal Alkynes Using Lithium Aminoborohydrides. Molecules 2023; 28:molecules28083433. [PMID: 37110669 PMCID: PMC10144115 DOI: 10.3390/molecules28083433] [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: 03/22/2023] [Revised: 04/10/2023] [Accepted: 04/10/2023] [Indexed: 04/29/2023] Open
Abstract
Dehydrogenative borylation of terminal alkynes has recently emerged as an atom-economical one-step alternative to traditional alkyne borylation methodologies. Using lithium aminoborohydrides, formed in situ from the corresponding amine-boranes and n-butyllithium, a variety of aromatic and aliphatic terminal alkyne substrates were successfully borylated in high yield. The potential to form mono-, di-, and tri-B-alkynylated products has been shown, though the mono-product is primarily generated using the presented condition. The reaction has been demonstrated at large (up to 50 mmol) scale, and the products are stable to column chromatography as well as acidic and basic aqueous conditions. Alternately, the dehydroborylation can be achieved by treating alkynyllithiums with amine-boranes. In that respect, aldehydes can act as starting materials by conversion to the 1,1-dibromoolefin and in situ rearrangement to the lithium acetylide.
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Affiliation(s)
- P Veeraraghavan Ramachandran
- Herbert C. Brown Center for Borane Research, Department of Chemistry, Purdue University, 560 Oval Drive, West Lafayette, IN 47907, USA
| | - Henry J Hamann
- Herbert C. Brown Center for Borane Research, Department of Chemistry, Purdue University, 560 Oval Drive, West Lafayette, IN 47907, USA
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4
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Ligand-controlled Cobalt-Catalyzed Formation of Carbon–Boron Bonds: Hydroboration vs. C–H/B–H Dehydrocoupling. J Catal 2022. [DOI: 10.1016/j.jcat.2022.07.037] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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5
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Yan T, Li Y, Huang G, Ni S, Dang L. Reaction Mechanism Study on Reactions of Phenylacetylenes with HSnEt3 Promoted by B(C6F5)3 with/without DABCO. Org Chem Front 2022. [DOI: 10.1039/d2qo00375a] [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
There are great variety of transformations for phenylacetylenes. Most efforts have been focused on the dehydrogenative coupling, although nucleophilic addition is often observed as the side reaction. The selectivity of...
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6
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Marciniec B, Pietraszuk C, Pawluć P, Maciejewski H. Inorganometallics (Transition Metal-Metalloid Complexes) and Catalysis. Chem Rev 2021; 122:3996-4090. [PMID: 34967210 PMCID: PMC8832401 DOI: 10.1021/acs.chemrev.1c00417] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
![]()
While the formation
and breaking of transition metal (TM)–carbon
bonds plays a pivotal role in the catalysis of organic compounds,
the reactivity of inorganometallic species, that is, those involving
the transition metal (TM)–metalloid (E) bond, is of key importance
in most conversions of metalloid derivatives catalyzed by TM complexes.
This Review presents the background of inorganometallic catalysis
and its development over the last 15 years. The results of mechanistic
studies presented in the Review are related to the occurrence of TM–E
and TM–H compounds as reactive intermediates in the catalytic
transformations of selected metalloids (E = B, Si, Ge, Sn, As, Sb,
or Te). The Review illustrates the significance of inorganometallics
in catalysis of the following processes: addition of metalloid–hydrogen
and metalloid–metalloid bonds to unsaturated compounds; activation
and functionalization of C–H bonds and C–X bonds with
hydrometalloids and bismetalloids; activation and functionalization
of C–H bonds with vinylmetalloids, metalloid halides, and sulfonates;
and dehydrocoupling of hydrometalloids. This first Review on inorganometallic
catalysis sums up the developments in the catalytic methods for the
synthesis of organometalloid compounds and their applications in advanced
organic synthesis as a part of tandem reactions.
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Affiliation(s)
- Bogdan Marciniec
- Faculty of Chemistry, Adam Mickiewicz University, Poznań, Uniwersytetu Poznańskiego 8, 61-614 Poznań, Poland.,Center for Advanced Technology, Adam Mickiewicz University, Poznań, Uniwersytetu Poznańskiego 10, 61-614 Poznań, Poland
| | - Cezary Pietraszuk
- Faculty of Chemistry, Adam Mickiewicz University, Poznań, Uniwersytetu Poznańskiego 8, 61-614 Poznań, Poland
| | - Piotr Pawluć
- Faculty of Chemistry, Adam Mickiewicz University, Poznań, Uniwersytetu Poznańskiego 8, 61-614 Poznań, Poland.,Center for Advanced Technology, Adam Mickiewicz University, Poznań, Uniwersytetu Poznańskiego 10, 61-614 Poznań, Poland
| | - Hieronim Maciejewski
- Faculty of Chemistry, Adam Mickiewicz University, Poznań, Uniwersytetu Poznańskiego 8, 61-614 Poznań, Poland
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7
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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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8
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Englert L, Schmidt U, Dömling M, Passargus M, Stennett TE, Hermann A, Arrowsmith M, Härterich M, Müssig J, Phillipps A, Prieschl D, Rempel A, Rohm F, Radacki K, Schorr F, Thiess T, Jiménez-Halla JOC, Braunschweig H. Reactions of diborenes with terminal alkynes: mechanisms of ligand-controlled anti-selective hydroalkynylation, cycloaddition and C[triple bond, length as m-dash]C triple bond scission. Chem Sci 2021; 12:9506-9515. [PMID: 34349926 PMCID: PMC8314202 DOI: 10.1039/d1sc02081a] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2021] [Accepted: 06/02/2021] [Indexed: 01/03/2023] Open
Abstract
The reactions of terminal acetylenes with doubly Lewis base-stabilised diborenes resulted in different outcomes depending on the nature of the ligands at boron and the conformation of the diborene (cyclic versus acyclic). N-heterocyclic carbene (NHC)-stabilised diborenes tended to undergo anti-selective hydroalkynylation at room temperature, whereas [2 + 2] cycloaddition was observed at higher temperatures, invariably followed by a C–N bond activation at one NHC ligand, leading to the ring-expansion of the initially formed BCBC ring and formation of novel boron-containing heterocycles. For phosphine-stabilised diborenes only [2 + 2] cycloaddition was observed, followed by a rearrangement of the resulting 1,2-dihydro-1,2-diborete to the corresponding 1,3-isomer, which amounts to complete scission of both the B
Created by potrace 1.16, written by Peter Selinger 2001-2019
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B double and CC triple bonds of the reactants. The elusive 1,2-isomer was finally trapped by using a cyclic phosphine-stabilised diborene, which prevented rearrangement to the 1,3-isomer. Extensive density functional theory (DFT) calculations provide a rationale for the selectivity observed. The outcome of reactions between diborenes and terminal alkynes can be tuned by varying the stabilising Lewis base and/or reaction conditions, to yield either the anti-hydroalkynylation product or [2 + 2] cycloaddition-derived boron heterocycles.![]()
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Affiliation(s)
- Lukas Englert
- Institute for Inorganic Chemistry, Julius-Maximilians-Universität Würzburg Am Hubland 97074 Würzburg Germany .,Institute for Sustainable Chemistry & Catalysis with Boron, Julius-Maximilians-Universität Würzburg Am Hubland 97074 Würzburg Germany
| | - Uwe Schmidt
- Institute for Inorganic Chemistry, Julius-Maximilians-Universität Würzburg Am Hubland 97074 Würzburg Germany .,Institute for Sustainable Chemistry & Catalysis with Boron, Julius-Maximilians-Universität Würzburg Am Hubland 97074 Würzburg Germany
| | - Michael Dömling
- Institute for Inorganic Chemistry, Julius-Maximilians-Universität Würzburg Am Hubland 97074 Würzburg Germany .,Institute for Sustainable Chemistry & Catalysis with Boron, Julius-Maximilians-Universität Würzburg Am Hubland 97074 Würzburg Germany
| | - Max Passargus
- Institute for Inorganic Chemistry, Julius-Maximilians-Universität Würzburg Am Hubland 97074 Würzburg Germany .,Institute for Sustainable Chemistry & Catalysis with Boron, Julius-Maximilians-Universität Würzburg Am Hubland 97074 Würzburg Germany
| | - Tom E Stennett
- Institute for Inorganic Chemistry, Julius-Maximilians-Universität Würzburg Am Hubland 97074 Würzburg Germany .,Institute for Sustainable Chemistry & Catalysis with Boron, Julius-Maximilians-Universität Würzburg Am Hubland 97074 Würzburg Germany
| | - Alexander Hermann
- Institute for Inorganic Chemistry, Julius-Maximilians-Universität Würzburg Am Hubland 97074 Würzburg Germany .,Institute for Sustainable Chemistry & Catalysis with Boron, Julius-Maximilians-Universität Würzburg Am Hubland 97074 Würzburg Germany
| | - Merle Arrowsmith
- Institute for Inorganic Chemistry, Julius-Maximilians-Universität Würzburg Am Hubland 97074 Würzburg Germany .,Institute for Sustainable Chemistry & Catalysis with Boron, Julius-Maximilians-Universität Würzburg Am Hubland 97074 Würzburg Germany
| | - Marcel Härterich
- Institute for Inorganic Chemistry, Julius-Maximilians-Universität Würzburg Am Hubland 97074 Würzburg Germany .,Institute for Sustainable Chemistry & Catalysis with Boron, Julius-Maximilians-Universität Würzburg Am Hubland 97074 Würzburg Germany
| | - Jonas Müssig
- Institute for Inorganic Chemistry, Julius-Maximilians-Universität Würzburg Am Hubland 97074 Würzburg Germany .,Institute for Sustainable Chemistry & Catalysis with Boron, Julius-Maximilians-Universität Würzburg Am Hubland 97074 Würzburg Germany
| | - Alexandra Phillipps
- Institute for Inorganic Chemistry, Julius-Maximilians-Universität Würzburg Am Hubland 97074 Würzburg Germany .,Institute for Sustainable Chemistry & Catalysis with Boron, Julius-Maximilians-Universität Würzburg Am Hubland 97074 Würzburg Germany
| | - Dominic Prieschl
- Institute for Inorganic Chemistry, Julius-Maximilians-Universität Würzburg Am Hubland 97074 Würzburg Germany .,Institute for Sustainable Chemistry & Catalysis with Boron, Julius-Maximilians-Universität Würzburg Am Hubland 97074 Würzburg Germany
| | - Anna Rempel
- Institute for Inorganic Chemistry, Julius-Maximilians-Universität Würzburg Am Hubland 97074 Würzburg Germany .,Institute for Sustainable Chemistry & Catalysis with Boron, Julius-Maximilians-Universität Würzburg Am Hubland 97074 Würzburg Germany
| | - Felix Rohm
- Institute for Inorganic Chemistry, Julius-Maximilians-Universität Würzburg Am Hubland 97074 Würzburg Germany .,Institute for Sustainable Chemistry & Catalysis with Boron, Julius-Maximilians-Universität Würzburg Am Hubland 97074 Würzburg Germany
| | - Krzysztof Radacki
- Institute for Inorganic Chemistry, Julius-Maximilians-Universität Würzburg Am Hubland 97074 Würzburg Germany .,Institute for Sustainable Chemistry & Catalysis with Boron, Julius-Maximilians-Universität Würzburg Am Hubland 97074 Würzburg Germany
| | - Fabian Schorr
- Institute for Inorganic Chemistry, Julius-Maximilians-Universität Würzburg Am Hubland 97074 Würzburg Germany .,Institute for Sustainable Chemistry & Catalysis with Boron, Julius-Maximilians-Universität Würzburg Am Hubland 97074 Würzburg Germany
| | - Torsten Thiess
- Institute for Inorganic Chemistry, Julius-Maximilians-Universität Würzburg Am Hubland 97074 Würzburg Germany .,Institute for Sustainable Chemistry & Catalysis with Boron, Julius-Maximilians-Universität Würzburg Am Hubland 97074 Würzburg Germany
| | | | - Holger Braunschweig
- Institute for Inorganic Chemistry, Julius-Maximilians-Universität Würzburg Am Hubland 97074 Würzburg Germany .,Institute for Sustainable Chemistry & Catalysis with Boron, Julius-Maximilians-Universität Würzburg Am Hubland 97074 Würzburg Germany
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9
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Zhang JS, Liu L, Chen T, Han LB. Cross-Dehydrogenative Alkynylation: A Powerful Tool for the Synthesis of Internal Alkynes. CHEMSUSCHEM 2020; 13:4776-4794. [PMID: 32667732 DOI: 10.1002/cssc.202001165] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/30/2020] [Revised: 07/13/2020] [Indexed: 06/11/2023]
Abstract
Alkynes are among the most fundamentally important organic compounds and are widely used in synthetic chemistry, biochemistry, and materials science. Thus, the development of an efficient and sustainable method for the preparation of alkynes has been a central concern in organic synthesis. Cross-dehydrogenative coupling utilizing E-H and Z-H bonds in two different molecules can avoid the need for prefunctionalization of starting materials and has become one of the most straightforward methods for the construction of E-Z chemical bonds. This Review summarizes recent progress in the preparation of internal alkynes by cross-dehydrogenative coupling with terminal alkynes.
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Affiliation(s)
- Ji-Shu Zhang
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha, 410082, P. R. China
| | - Long Liu
- Key Laboratory of Ministry of Education for Advanced Materials in Tropical Island Resources, College of Chemical Engineering and Technology, Hainan University, Haikou, 570228, P. R. China
| | - Tieqiao Chen
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha, 410082, P. R. China
- Key Laboratory of Ministry of Education for Advanced Materials in Tropical Island Resources, College of Chemical Engineering and Technology, Hainan University, Haikou, 570228, P. R. China
| | - Li-Biao Han
- Division of Chemistry, Faculty of Pure and Applied Sciences, University of Tsukuba, Tsukuba, Ibaraki, 3058571, Japan
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10
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Desrosiers V, Garcia CZ, Fontaine FG. Boron Recycling in the Metal-Free Transfer C–H Borylation of Terminal Alkynes and Heteroarenes. ACS Catal 2020. [DOI: 10.1021/acscatal.0c02682] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Vincent Desrosiers
- Département de Chimie, Université Laval, 1045 Avenue de la Médecine, Quebec City, Quebec G1V 0A6, Canada
| | | | - Frédéric-Georges Fontaine
- Département de Chimie, Université Laval, 1045 Avenue de la Médecine, Quebec City, Quebec G1V 0A6, Canada
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11
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Foley BJ, Bhuvanesh N, Zhou J, Ozerov OV. Combined Experimental and Computational Studies of the Mechanism of Dehydrogenative Borylation of Terminal Alkynes Catalyzed by PNP Complexes of Iridium. ACS Catal 2020. [DOI: 10.1021/acscatal.0c02455] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Bryan J. Foley
- Department of Chemistry, Texas A&M University, 3255 TAMU, College Station, Texas 77842, United States
| | - Nattamai Bhuvanesh
- Department of Chemistry, Texas A&M University, 3255 TAMU, College Station, Texas 77842, United States
| | - Jia Zhou
- School of Science, Harbin Institute of Technology, Shenzhen 518055, China
| | - Oleg V. Ozerov
- Department of Chemistry, Texas A&M University, 3255 TAMU, College Station, Texas 77842, United States
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12
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Foley BJ, Ozerov OV. Air- and Water-Tolerant (PNP)Ir Precatalyst for the Dehydrogenative Borylation of Terminal Alkynes. Organometallics 2020. [DOI: 10.1021/acs.organomet.0c00250] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Bryan J. Foley
- Department of Chemistry, Texas A&M University, College Station, Texas 77842, United States
| | - Oleg V. Ozerov
- Department of Chemistry, Texas A&M University, College Station, Texas 77842, United States
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13
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Pell CJ, Ozerov OV. Synthesis and Rh-catalyzed reductive cyclization of 1,6-enynes and 1,6-diynes containing alkynylboronate termini. J Organomet Chem 2020. [DOI: 10.1016/j.jorganchem.2020.121143] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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14
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New expanded-ring NHC platinum(0) complexes: Synthesis, structure and highly efficient diboration of terminal alkenes. J Organomet Chem 2020. [DOI: 10.1016/j.jorganchem.2020.121140] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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15
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Birepinte M, Liautard V, Chabaud L, Pucheault M. Magnesium‐Catalyzed Tandem Dehydrogenation‐Dehydrocoupling: An Atom Economical Access to Alkynylboranes. Chemistry 2020; 26:3236-3240. [DOI: 10.1002/chem.201905772] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2019] [Indexed: 11/09/2022]
Affiliation(s)
- Mélodie Birepinte
- Institute of Molecular ScienceCNRS, Université de Bordeaux 351 Cours de la libération 33405 Talence Cedex France
| | - Virginie Liautard
- Institute of Molecular ScienceCNRS, Université de Bordeaux 351 Cours de la libération 33405 Talence Cedex France
| | - Laurent Chabaud
- Institute of Molecular ScienceCNRS, Université de Bordeaux 351 Cours de la libération 33405 Talence Cedex France
| | - Mathieu Pucheault
- Institute of Molecular ScienceCNRS, Université de Bordeaux 351 Cours de la libération 33405 Talence Cedex France
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16
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Procter RJ, Uzelac M, Cid J, Rushworth PJ, Ingleson MJ. Low-Coordinate NHC–Zinc Hydride Complexes Catalyze Alkyne C–H Borylation and Hydroboration Using Pinacolborane. ACS Catal 2019. [DOI: 10.1021/acscatal.9b01370] [Citation(s) in RCA: 69] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
| | - Marina Uzelac
- School of Chemistry, University of Edinburgh, Edinburgh EH9 3FJ, U.K
| | - Jessica Cid
- School of Chemistry, University of Manchester, Manchester M13 9PL, U.K
| | - Philip J. Rushworth
- Research and Development, GlaxoSmithKline, Gunnels Wood Road, Stevenage SG1 2NY, U.K
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17
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N-Heterocyclic Carbene Adducts of Alkynyl Functionalized 1,3,2-Dithioborolanes. Molecules 2019; 24:molecules24091690. [PMID: 31052217 PMCID: PMC6539715 DOI: 10.3390/molecules24091690] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2019] [Revised: 04/25/2019] [Accepted: 04/29/2019] [Indexed: 12/02/2022] Open
Abstract
Alkynyl functionalized boron compounds are versatile intermediates in the areas of medicinal chemistry, materials science, and optical materials. In particular, alkynyl boronate esters [R1−C≡C−B(OR2)2] are of interest since they provide reactivity at both the alkyne entity, with retention of the B−C bond or alkyne transfer to electrophilic substrates with scission of the latter. The boron atom is commonly well stabilized due to (i) the extraordinary strength of two B−O bonds, and (ii) the chelate effect exerted by a bifunctional alcohol. We reasoned that the replacement of a B−O for a B−S bond would lead to higher reactivity and post-functionalization in the resulting alkynyl boronate thioesters [R1−C≡C−B(S2X)]. Access to this poorly investigated class of compounds starts form chloro dithioborolane cyclo-Cl−B(S2C2H4) as a representative example. Whereas syntheses of three coordinate alkynyl boronate thioesters [R1−C≡C−B(S2X)] proved to be ineffective, the reactions of NHC-adducts (NHC = N-heterocyclic carbene) of cyclo-Cl-B(S2C2H4) afforded the alkyne substituted thioboronate esters in good yield. The products NHC−B(S2C2H4)(C≡C-R1) are remarkably stable towards water and air, which suggests their use as boron-based building blocks for applications akin to oxygen-based boronate esters.
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18
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Tani T, Sawatsugawa Y, Sano Y, Hirataka Y, Takahashi N, Hashimoto S, Sugiura T, Tsuchimoto T. Alkynyl−B(dan)s in Various Palladium‐Catalyzed Carbon−Carbon Bond‐Forming Reactions Leading to Internal Alkynes, 1,4‐Enynes, Ynones, and Multiply Substituted Alkenes. Adv Synth Catal 2019. [DOI: 10.1002/adsc.201801527] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Tomohiro Tani
- Department of Applied Chemistry, School of Science and TechnologyMeiji University 1-1-1 Higashimita, Tama-ku Kawasaki 214-8571 Japan
| | - Yuuki Sawatsugawa
- Department of Applied Chemistry, School of Science and TechnologyMeiji University 1-1-1 Higashimita, Tama-ku Kawasaki 214-8571 Japan
| | - Yusuke Sano
- Department of Applied Chemistry, School of Science and TechnologyMeiji University 1-1-1 Higashimita, Tama-ku Kawasaki 214-8571 Japan
| | - Yo Hirataka
- Department of Applied Chemistry, School of Science and TechnologyMeiji University 1-1-1 Higashimita, Tama-ku Kawasaki 214-8571 Japan
| | - Naomi Takahashi
- Department of Applied Chemistry, School of Science and TechnologyMeiji University 1-1-1 Higashimita, Tama-ku Kawasaki 214-8571 Japan
| | - Sadahiro Hashimoto
- Department of Applied Chemistry, School of Science and TechnologyMeiji University 1-1-1 Higashimita, Tama-ku Kawasaki 214-8571 Japan
| | - Tetsuya Sugiura
- Department of Applied Chemistry, School of Science and TechnologyMeiji University 1-1-1 Higashimita, Tama-ku Kawasaki 214-8571 Japan
| | - Teruhisa Tsuchimoto
- Department of Applied Chemistry, School of Science and TechnologyMeiji University 1-1-1 Higashimita, Tama-ku Kawasaki 214-8571 Japan
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19
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Elwrfalli F, Esvan YJ, Robertson CM, Aïssa C. Regioselective cycloaddition of potassium alkynyltrifluoroborates with 3-azetidinones and 3-oxetanone by nickel-catalysed C–C bond activation. Chem Commun (Camb) 2019; 55:497-500. [DOI: 10.1039/c8cc09241a] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
The nickel-catalysed (4+2) cycloaddtion of potassium alkynyltrifluoroborates and 3-azetidinones and 3-oxetanone gives only one regioisomer for all alkyne substituents.
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20
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Kitamura R, Suzuki K, Yamashita M. Dimerization of boryl- and amino-substituted acetylenes by B 2C 2 four-membered ring formation. Chem Commun (Camb) 2018; 54:5819-5822. [PMID: 29694479 DOI: 10.1039/c8cc02122h] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Boryl- and amino-substituted acetylenes bearing diphenylboryl or 9-borabicyclononyl groups were synthesized. X-ray diffraction analyses revealed the dimerized structures of these acetylenes via the formation of B2C2 four-membered rings. Spectroscopic studies and DFT calculations indicated that these dimers can dissociate to afford monomeric acetylenes, and that the equilibrium constant for the dissociation depends on the structure of the boryl substituents.
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Affiliation(s)
- Ryo Kitamura
- Department of Applied Chemistry, Graduate School of Science and Engineering, Chuo University, 1-13-27 Kasuga, Bunkyo-ku, Tokyo, 112-8551, Japan
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21
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Royes J, Cuenca AB, Fernández E. Access to 1,1-Diborylalkenes and Concomitant Stereoselective Reactivity. European J Org Chem 2018. [DOI: 10.1002/ejoc.201701786] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Jordi Royes
- Dept. Química Física i Inorgànica; University Rovira i Virgili; C/Marcel·lí Domingo s/n 43007 Tarragona Spain
| | - Ana B. Cuenca
- Dept. Química Orgánica y Farmacéutica; Institut Químic de Sarrià; Universitat Ramon Llull; Via Augusta, 390 08017 Barcelona Spain
| | - Elena Fernández
- Dept. Química Física i Inorgànica; University Rovira i Virgili; C/Marcel·lí Domingo s/n 43007 Tarragona Spain
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22
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Zhou J, Lee CI, Ozerov OV. Computational Study of the Mechanism of Dehydrogenative Borylation of Terminal Alkynes by SiNN Iridium Complexes. ACS Catal 2017. [DOI: 10.1021/acscatal.7b03835] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jia Zhou
- MIIT
Key Laboratory of Critical Materials Technology for New Energy Conversion
and Storage, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150001, China
| | - Chun-I Lee
- Department of Chemistry, Texas A&M University, College Station, Texas 77842, United States
| | - Oleg V. Ozerov
- Department of Chemistry, Texas A&M University, College Station, Texas 77842, United States
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23
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Martínez-Prieto LM, Rakers L, López-Vinasco AM, Cano I, Coppel Y, Philippot K, Glorius F, Chaudret B, van Leeuwen PWNM. Soluble Platinum Nanoparticles Ligated by Long-Chain N-Heterocyclic Carbenes as Catalysts. Chemistry 2017; 23:12779-12786. [DOI: 10.1002/chem.201702288] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2017] [Indexed: 11/06/2022]
Affiliation(s)
- Luis M. Martínez-Prieto
- LPCNO; Laboratoire de Physique et Chimie des Nano-Objets, UMR5215 INSA-CNRS UPS; Institut des Sciences appliquées; 135, Avenue de Rangueil 31077 Toulouse France
| | - Lena Rakers
- Organisch-Chemisches Institut; Westfälische Wilhelms-Universität Münster; Corrensstraße 40 48149 Münster Germany
| | - Angela M. López-Vinasco
- LPCNO; Laboratoire de Physique et Chimie des Nano-Objets, UMR5215 INSA-CNRS UPS; Institut des Sciences appliquées; 135, Avenue de Rangueil 31077 Toulouse France
| | - Israel Cano
- LPCNO; Laboratoire de Physique et Chimie des Nano-Objets, UMR5215 INSA-CNRS UPS; Institut des Sciences appliquées; 135, Avenue de Rangueil 31077 Toulouse France
| | - Yannick Coppel
- LCC; Laboratoire de Chimie de Coordination; CNRS, UPS; 205, Route de Narbonne 31077 Toulouse France
| | - Karine Philippot
- LCC; Laboratoire de Chimie de Coordination; CNRS, UPS; 205, Route de Narbonne 31077 Toulouse France
| | - Frank Glorius
- Organisch-Chemisches Institut; Westfälische Wilhelms-Universität Münster; Corrensstraße 40 48149 Münster Germany
| | - Bruno Chaudret
- LPCNO; Laboratoire de Physique et Chimie des Nano-Objets, UMR5215 INSA-CNRS UPS; Institut des Sciences appliquées; 135, Avenue de Rangueil 31077 Toulouse France
| | - Piet W. N. M. van Leeuwen
- LPCNO; Laboratoire de Physique et Chimie des Nano-Objets, UMR5215 INSA-CNRS UPS; Institut des Sciences appliquées; 135, Avenue de Rangueil 31077 Toulouse France
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24
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Iashin V, Chernichenko K, Pápai I, Repo T. Atom-Efficient Synthesis of Alkynylfluoroborates Using BF3
-Based Frustrated Lewis Pairs. Angew Chem Int Ed Engl 2016; 55:14146-14150. [DOI: 10.1002/anie.201608520] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2016] [Indexed: 01/04/2023]
Affiliation(s)
- Vladimir Iashin
- Department of Chemistry; University of Helsinki; A. I. Virtasen aukio 1, FI- 00014 Helsinki Finland
| | - Konstantin Chernichenko
- Department of Chemistry; University of Helsinki; A. I. Virtasen aukio 1, FI- 00014 Helsinki Finland
| | - Imre Pápai
- Research Centre for Natural Sciences; Hungarian Academy of Sciences; Magyar tudósok körútja 2, H- 1117 Budapest Hungary
| | - Timo Repo
- Department of Chemistry; University of Helsinki; A. I. Virtasen aukio 1, FI- 00014 Helsinki Finland
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25
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Iashin V, Chernichenko K, Pápai I, Repo T. Atom-Efficient Synthesis of Alkynylfluoroborates Using BF3
-Based Frustrated Lewis Pairs. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201608520] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Vladimir Iashin
- Department of Chemistry; University of Helsinki; A. I. Virtasen aukio 1, FI- 00014 Helsinki Finland
| | - Konstantin Chernichenko
- Department of Chemistry; University of Helsinki; A. I. Virtasen aukio 1, FI- 00014 Helsinki Finland
| | - Imre Pápai
- Research Centre for Natural Sciences; Hungarian Academy of Sciences; Magyar tudósok körútja 2, H- 1117 Budapest Hungary
| | - Timo Repo
- Department of Chemistry; University of Helsinki; A. I. Virtasen aukio 1, FI- 00014 Helsinki Finland
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26
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Iwasaki M, Nishihara Y. Synthesis of Multisubstituted Olefins through Regio- and Stereoselective Addition of Interelement Compounds Having B-Si, B-B, and Cl-S Bonds to Alkynes, and Subsequent Cross-Couplings. CHEM REC 2016; 16:2031-45. [PMID: 27331376 DOI: 10.1002/tcr.201600017] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2016] [Indexed: 11/06/2022]
Abstract
Multisubstituted olefins are fundamental motifs in organic compounds. In this account, we describe the synthesis of organic molecules bearing an olefinic moiety by the transition-metal-catalyzed regio- and stereoselective addition of a variety of interelement compounds to alkynes. Regio- and stereoselective silaboration, diborylation, and chlorothiolation have been achieved by using the transition-metal catalysts. The subsequent cross-coupling reactions of the boron-containing alkenes to install various aryl groups afforded the corresponding tri- and tetraarylated olefins. This account describes our research on the highly regio- and stereoselective synthesis of multifunctionalized olefins such as tetraarylethenes with four different aryl groups.
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Affiliation(s)
- Masayuki Iwasaki
- Research Institute for Interdisciplinary Science, 3-1-1 Tsushimanaka, Kita-ku, Okayama, 700-8530, Japan
| | - Yasushi Nishihara
- Research Institute for Interdisciplinary Science, 3-1-1 Tsushimanaka, Kita-ku, Okayama, 700-8530, Japan
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27
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28
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Pell CJ, Ozerov OV. Catalytic dehydrogenative borylation of terminal alkynes by POCOP-supported palladium complexes. Inorg Chem Front 2015. [DOI: 10.1039/c5qi00074b] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A (POCOP)-supported palladium complex was used to catalyse the dehydrogenative borylation of terminal alkynes to form alkynylboronates.
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Affiliation(s)
| | - Oleg V. Ozerov
- Department of Chemistry
- Texas A&M University
- College Station
- USA
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29
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Vallejos MM, Pellegrinet SC. Competing mechanisms for the reaction of dichloropropynylborane with 2-tert-butylbutadiene. Diels–Alder reaction versus alkynylboration. RSC Adv 2015. [DOI: 10.1039/c5ra12903f] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Density functional theory and the quantum theory of atoms in molecules approach were used to study two competing process: the Diels–Alder reaction and the 1,4-alkynylboration.
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Affiliation(s)
- Margarita M. Vallejos
- Área de Química Orgánica
- Departamento de Química
- Facultad de Ciencias Exactas y Naturales y Agrimensura
- Universidad Nacional del Nordeste
- 3400 Corrientes
| | - Silvina C. Pellegrinet
- Instituto de Química Rosario (CONICET)
- Facultad de Ciencias Bioquímicas y Farmacéuticas
- Universidad Nacional de Rosario
- Rosario 2000
- Argentina
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30
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Tsuchimoto T, Utsugi H, Sugiura T, Horio S. Alkynylboranes: A Practical Approach by Zinc-Catalyzed Dehydrogenative Coupling of Terminal Alkynes with 1,8-Naphthalenediaminatoborane. Adv Synth Catal 2014. [DOI: 10.1002/adsc.201400767] [Citation(s) in RCA: 62] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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31
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Alonso F, Moglie Y, Pastor-Pérez L, Sepúlveda-Escribano A. Solvent- and Ligand-free Diboration of Alkynes and Alkenes Catalyzed by Platinum Nanoparticles on Titania. ChemCatChem 2014. [DOI: 10.1002/cctc.201300946] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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32
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Lawson JR, Clark ER, Cade IA, Solomon SA, Ingleson MJ. Haloboration of internal alkynes with boronium and borenium cations as a route to tetrasubstituted alkenes. Angew Chem Int Ed Engl 2013; 52:7518-22. [PMID: 23740843 PMCID: PMC3749439 DOI: 10.1002/anie.201302609] [Citation(s) in RCA: 88] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2013] [Indexed: 11/30/2022]
Abstract
Hail boration! 2-Dimethylaminopyridine-ligated dihaloborocations [X2B(2-DMAP)](+) with a strained four-membered boracycle were used for the haloboration of terminal and dialkyl internal alkynes (see scheme). Esterification then provided vinyl boronate esters as useful precursors to tetrasubstituted alkenes. Following mechanistic studies, the scope of the haloboration was expanded simply by variation of the amine. Pin = 2,3-dimethyl-2,3-butanedioxy.
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Affiliation(s)
- James R Lawson
- School of Chemistry, University of ManchesterManchester, M13 9PL (UK) E-mail:
| | - Ewan R Clark
- School of Chemistry, University of ManchesterManchester, M13 9PL (UK) E-mail:
| | - Ian A Cade
- School of Chemistry, University of ManchesterManchester, M13 9PL (UK) E-mail:
| | - Sophia A Solomon
- School of Chemistry, University of ManchesterManchester, M13 9PL (UK) E-mail:
| | - Michael J Ingleson
- School of Chemistry, University of ManchesterManchester, M13 9PL (UK) E-mail:
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33
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Jiao J, Nakajima K, Nishihara Y. Synthesis of Multisubstituted Olefins through Regio- and Stereoselective Silylborylation of an Alkynylboronate/Chemoselective Cross-Coupling Sequences. Org Lett 2013; 15:3294-7. [DOI: 10.1021/ol401333j] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jiao Jiao
- Division of Earth, Life, and Molecular Sciences, Graduate School of Natural Science and Technology, Okayama University, 3-1-1 Tsushimanaka, Kita-ku, Okayama 700-8530, Japan, Japan Science and Technology Agency, ACT-C, 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan, and Department of Chemistry, Aichi University of Education, 1 Hirosawa, Igaya-cho, Kariya, Aichi 448-8542, Japan
| | - Kiyohiko Nakajima
- Division of Earth, Life, and Molecular Sciences, Graduate School of Natural Science and Technology, Okayama University, 3-1-1 Tsushimanaka, Kita-ku, Okayama 700-8530, Japan, Japan Science and Technology Agency, ACT-C, 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan, and Department of Chemistry, Aichi University of Education, 1 Hirosawa, Igaya-cho, Kariya, Aichi 448-8542, Japan
| | - Yasushi Nishihara
- Division of Earth, Life, and Molecular Sciences, Graduate School of Natural Science and Technology, Okayama University, 3-1-1 Tsushimanaka, Kita-ku, Okayama 700-8530, Japan, Japan Science and Technology Agency, ACT-C, 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan, and Department of Chemistry, Aichi University of Education, 1 Hirosawa, Igaya-cho, Kariya, Aichi 448-8542, Japan
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34
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Lawson JR, Clark ER, Cade IA, Solomon SA, Ingleson MJ. Haloboration of Internal Alkynes with Boronium and Borenium Cations as a Route to Tetrasubstituted Alkenes. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201302609] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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35
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Nishihara Y, Suetsugu M, Saito D, Kinoshita M, Iwasaki M. Synthesis of Cyclic 1-Alkenylboronates via Zr-Mediated Double Functionalization of Alkynylboronates and Sequential Ru-Catalyzed Ring-Closing Olefin Metathesis. Org Lett 2013; 15:2418-21. [DOI: 10.1021/ol400896u] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Yasushi Nishihara
- Division of Earth, Life, and Molecular Sciences, Graduate School of Natural Science and Technology, Okayama University, 3-1-1 Tsushimanaka, Kita-ku, Okayama 700-8530, Japan, and Japan Science and Technology Agency, ACT-C, 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan
| | - Masato Suetsugu
- Division of Earth, Life, and Molecular Sciences, Graduate School of Natural Science and Technology, Okayama University, 3-1-1 Tsushimanaka, Kita-ku, Okayama 700-8530, Japan, and Japan Science and Technology Agency, ACT-C, 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan
| | - Daisuke Saito
- Division of Earth, Life, and Molecular Sciences, Graduate School of Natural Science and Technology, Okayama University, 3-1-1 Tsushimanaka, Kita-ku, Okayama 700-8530, Japan, and Japan Science and Technology Agency, ACT-C, 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan
| | - Megumi Kinoshita
- Division of Earth, Life, and Molecular Sciences, Graduate School of Natural Science and Technology, Okayama University, 3-1-1 Tsushimanaka, Kita-ku, Okayama 700-8530, Japan, and Japan Science and Technology Agency, ACT-C, 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan
| | - Masayuki Iwasaki
- Division of Earth, Life, and Molecular Sciences, Graduate School of Natural Science and Technology, Okayama University, 3-1-1 Tsushimanaka, Kita-ku, Okayama 700-8530, Japan, and Japan Science and Technology Agency, ACT-C, 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan
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36
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Lee CI, Zhou J, Ozerov OV. Catalytic dehydrogenative borylation of terminal alkynes by a SiNN pincer complex of iridium. J Am Chem Soc 2013; 135:3560-6. [PMID: 23374079 DOI: 10.1021/ja311682c] [Citation(s) in RCA: 111] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Compounds with carbon-boron bonds are versatile intermediates for building more complex molecules via the elaboration of the carbon-boron bonds into other carbon-element bonds. The synthesis of carbon-boron bonds by catalytic dehydrogenative borylation of carbon-hydrogen bonds with dialkoxyboranes (RO)2BH is particularly attractive. It has been demonstrated for a variety of carbon-hydrogen bond types but not for the C(sp)-H bonds of terminal alkynes, for which hydroboration of the triple bond is a competing process. We report a new iridium catalyst that is strictly chemoselective for C-H borylation of terminal alkynes. The key to the success of this catalyst appears to be the new ancillary SiNN pincer ligand that combines amido, quinoline, and silyl donors and gives rise to structurally unusual Ir complexes. A variety of terminal alkynes (RC≡C-H) can be converted to their alkynylboronates (RC≡C-Bpin, where pin = pinacolate) in high yield and purity within minutes at ambient temperature.
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Affiliation(s)
- Chun-I Lee
- Department of Chemistry, Texas A&M University, 3255 TAMU, College Station, Texas 77842, United States
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37
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Palladium-free synthesis of unsymmetrical diarylethynes by cross-coupling reaction of alkynylboronates with aryl iodides catalyzed by CuCl. Tetrahedron Lett 2013. [DOI: 10.1016/j.tetlet.2012.11.069] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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38
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Suzuki I, Yasuda M, Baba A. Zn(ii) chloride-catalyzed direct coupling of various alkynes with acetals: facile and inexpensive access to functionalized propargyl ethers. Chem Commun (Camb) 2013; 49:11620-2. [DOI: 10.1039/c3cc46570e] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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