1
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Stevens JE, Miller JD, Fitzsimmons MC, Moore CE, Thomas CM. Z-selective dimerization of terminal alkynes by a (PNNP)Fe II complex. Chem Commun (Camb) 2024; 60:5169-5172. [PMID: 38639737 DOI: 10.1039/d4cc00469h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/20/2024]
Abstract
A tetradentate bis(amido)bis(phosphine) FeII complex, (PNNP)Fe, is shown to activate the terminal C-H bond of aryl alkynes across its Fe-Namide bonds. (PNNP)Fe is also shown to catalytically dimerize terminal aryl alkynes to produce 1,3-enynes with Z : E ratios as high as 96 : 4 with yields up to 95% and loadings as low as 1 mol% at 30 °C in 2 h. A plausible metal-ligand cooperative mechanism invoking a vinylidene intermediate is proposed.
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Affiliation(s)
- Jeremiah E Stevens
- Department of Chemistry and Biochemistry, The Ohio State University, 100 W. 18th Ave., Columbus, OH 43210, USA.
| | - Justin D Miller
- Department of Chemistry and Biochemistry, The Ohio State University, 100 W. 18th Ave., Columbus, OH 43210, USA.
| | - Matthew C Fitzsimmons
- Department of Chemistry and Biochemistry, The Ohio State University, 100 W. 18th Ave., Columbus, OH 43210, USA.
| | - Curtis E Moore
- Department of Chemistry and Biochemistry, The Ohio State University, 100 W. 18th Ave., Columbus, OH 43210, USA.
| | - Christine M Thomas
- Department of Chemistry and Biochemistry, The Ohio State University, 100 W. 18th Ave., Columbus, OH 43210, USA.
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2
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Thompson CV, Narro AL, Arman HD, Tonzetich ZJ. Synthesis and Reactivity of Iron(II) Acetylide Complexes Relevant to Alkyne Dimerization. Organometallics 2022. [DOI: 10.1021/acs.organomet.2c00265] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- C. Vance Thompson
- Department of Chemistry, University of Texas at San Antonio (UTSA), San Antonio, Texas 78249, United States
| | - Ana L. Narro
- Department of Chemistry, University of Texas at San Antonio (UTSA), San Antonio, Texas 78249, United States
| | - Hadi D. Arman
- Department of Chemistry, University of Texas at San Antonio (UTSA), San Antonio, Texas 78249, United States
| | - Zachary J. Tonzetich
- Department of Chemistry, University of Texas at San Antonio (UTSA), San Antonio, Texas 78249, United States
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3
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Weber S, Veiros LF, Kirchner K. Selective Manganese-Catalyzed Dimerization and Cross-Coupling of Terminal Alkynes. ACS Catal 2021; 11:6474-6483. [PMID: 34123484 PMCID: PMC8185884 DOI: 10.1021/acscatal.1c01137] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2021] [Revised: 05/05/2021] [Indexed: 11/28/2022]
Abstract
![]()
Herein, efficient
manganese-catalyzed dimerization of terminal
alkynes to afford 1,3-enynes is described. This reaction is atom economic,
implementing an inexpensive, earth-abundant nonprecious metal catalyst.
The precatalyst is the bench-stable alkyl bisphosphine Mn(I) complex fac-[Mn(dippe)(CO)3(CH2CH2CH3)]. The catalytic process is initiated by migratory
insertion of a CO ligand into the Mn–alkyl bond to yield an
acyl intermediate that undergoes rapid C–H bond cleavage of
alkyne, forming an active Mn(I) acetylide catalyst [Mn(dippe)(CO)2(C≡CPh)(η2-HC≡CPh)] together
with liberated butanal. A range of aromatic and aliphatic terminal
alkynes were efficiently and selectively converted into head-to-head Z-1,3-enynes and head-to-tail gem-1,3-enynes,
respectively, in good to excellent yields. Moreover, cross-coupling
of aromatic and aliphatic alkynes selectively yields head-to-tail gem-1,3-enynes. In all cases, the reactions were performed
at 70 °C with a catalyst loading of 1–2 mol %. A mechanism
based on density functional theory (DFT) calculations is presented.
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Affiliation(s)
- Stefan Weber
- Institute of Applied Synthetic Chemistry, Vienna University of Technology, Getreidemarkt 9, A-1060 Vienna, Austria
| | - Luis F. Veiros
- Centro de Química Estrutural and Departamento de Engenharia Química, Instituto Superior Técnico, Universidade de Lisboa, Av Rovisco Pais, 1049-001 Lisboa, Portugal
| | - Karl Kirchner
- Institute of Applied Synthetic Chemistry, Vienna University of Technology, Getreidemarkt 9, A-1060 Vienna, Austria
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4
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Tran DP, Sato Y, Yamamoto Y, Kawaguchi SI, Kodama S, Nomoto A, Ogawa A. Highly regio- and stereoselective phosphinylphosphination of terminal alkynes with tetraphenyldiphosphine monoxide under radical conditions. Beilstein J Org Chem 2021; 17:866-872. [PMID: 33968259 PMCID: PMC8077611 DOI: 10.3762/bjoc.17.72] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2021] [Accepted: 04/07/2021] [Indexed: 12/26/2022] Open
Abstract
The homolytic cleavage of the PV(O)–PIII bond in tetraphenyldiphosphine monoxide simultaneously provides both pentavalent and trivalent phosphorus-centered radicals with different reactivities. The method using V-40 as an initiator is successfully investigated for the regio- and stereoselective phosphinylphosphination of terminal alkynes giving the corresponding trans-isomers of 1-diphenylphosphinyl-2-diphenylthiophosphinyl-1-alkenes in good yields. The protocol can be applied to a wide variety of terminal alkynes including both alkyl- and arylalkynes.
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Affiliation(s)
- Dat Phuc Tran
- Department of Applied Chemistry, Graduate School of Engineering, Osaka Prefecture University, 1-1 Gakuen-cho, Nakaku, Sakai, Osaka 599-8531, Japan
| | - Yuki Sato
- Department of Applied Chemistry, Graduate School of Engineering, Osaka Prefecture University, 1-1 Gakuen-cho, Nakaku, Sakai, Osaka 599-8531, Japan
| | - Yuki Yamamoto
- Department of Applied Chemistry, Graduate School of Engineering, Osaka Prefecture University, 1-1 Gakuen-cho, Nakaku, Sakai, Osaka 599-8531, Japan
| | - Shin-Ichi Kawaguchi
- Center for Education and Research in Agricultural Innovation, Faculty of Agriculture, Saga University, 152-1 Shonan-cho, Karatsu, Saga 847-0021, Japan
| | - Shintaro Kodama
- Department of Applied Chemistry, Graduate School of Engineering, Osaka Prefecture University, 1-1 Gakuen-cho, Nakaku, Sakai, Osaka 599-8531, Japan
| | - Akihiro Nomoto
- Department of Applied Chemistry, Graduate School of Engineering, Osaka Prefecture University, 1-1 Gakuen-cho, Nakaku, Sakai, Osaka 599-8531, Japan
| | - Akiya Ogawa
- Department of Applied Chemistry, Graduate School of Engineering, Osaka Prefecture University, 1-1 Gakuen-cho, Nakaku, Sakai, Osaka 599-8531, Japan
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5
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Weber SM, Hilt G. Late 3d Metal-Catalyzed (Cross-) Dimerization of Terminal and Internal Alkynes. Front Chem 2021; 9:635826. [PMID: 33777899 PMCID: PMC7991731 DOI: 10.3389/fchem.2021.635826] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2020] [Accepted: 01/22/2021] [Indexed: 11/23/2022] Open
Abstract
This review will outline the recent advances in chemo-, regio-, and stereoselective (cross-) dimerization of terminal alkynes to generate 1,3-enynes using different types of iron and cobalt catalysts with altering oxidation states of the active species. In general, the used ligands have a crucial effect on the stereoselectivity of the reaction; e.g., bidentate phosphine ligands in cobalt catalysts can generate the E-configured head-to-head dimerization product, while tridentate phosphine ligands can generate either the Z-configured head-to-head dimerization product or the branched head-to-tail isomer. Furthermore, the hydroalkynylation of silyl-substituted acetylenes as donors to internal alkynes as acceptors will be discussed using cobalt and nickel catalysts.
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Affiliation(s)
- Sebastian M Weber
- Fachbereich Chemie, Philipps-Universität Marburg, Marburg, Germany.,Institut für Chemie, Carl Von Ossietzky Universität Oldenburg, Oldenburg, Germany
| | - Gerhard Hilt
- Institut für Chemie, Carl Von Ossietzky Universität Oldenburg, Oldenburg, Germany
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6
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Rana S, Biswas JP, Paul S, Paik A, Maiti D. Organic synthesis with the most abundant transition metal–iron: from rust to multitasking catalysts. Chem Soc Rev 2021; 50:243-472. [DOI: 10.1039/d0cs00688b] [Citation(s) in RCA: 85] [Impact Index Per Article: 28.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The promising aspects of iron in synthetic chemistry are being explored for three-four decades as a green and eco-friendly alternative to late transition metals. This present review unveils these rich iron-chemistry towards different transformations.
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Affiliation(s)
- Sujoy Rana
- Department of Chemistry
- University of North Bengal
- Darjeeling
- India
| | | | - Sabarni Paul
- Department of Chemistry
- University of North Bengal
- Darjeeling
- India
| | - Aniruddha Paik
- Department of Chemistry
- University of North Bengal
- Darjeeling
- India
| | - Debabrata Maiti
- Department of Chemistry
- IIT Bombay
- Mumbai-400076
- India
- Tokyo Tech World Research Hub Initiative (WRHI)
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7
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Madasu J, Shinde S, Das R, Patel S, Shard A. Potassium tert-butoxide mediated C-C, C-N, C-O and C-S bond forming reactions. Org Biomol Chem 2020; 18:8346-8365. [PMID: 33020791 DOI: 10.1039/d0ob01382j] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Potassium tertiary butoxide (KOtBu) mediated constructions of C-C, C-O, C-N, and C-S bonds are reviewed with special emphasis on their synthetic applications. KOtBu can be used to perform reactions already known to be carried out using transition metals, but it has advantages in terms of environmental congruence and economic cost. KOtBu is widely employed in organic synthesis to mediate the construction of C-C, C-O, C-N, C-S and miscellaneous bonds in good to excellent yields. Synthetic uses of KOtBu in coupling, alkylation, arylation, α-phenylation, cyclization, Heck-type, annulation, photo-arylation, aromatic-substitution, amidation, and silylation reactions are summarized and discussed. The mechanisms through which KOtBu carries out a specific reaction are also discussed. One of the goals of this review is to attract the attention of chemists as to the benefits of using KOtBu as an environmentally benign alternative to transition metals and its applications in the construction of chemical bonds with predominant importance in organic synthesis. This review completely covers the synthetic protocols that have been performed using KOtBu in the last two decades.
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Affiliation(s)
- Jayashree Madasu
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research (NIPER), Ahmedabad, Gujarat 380054, India.
| | - Shital Shinde
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research (NIPER), Ahmedabad, Gujarat 380054, India.
| | - Rudradip Das
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research (NIPER), Ahmedabad, Gujarat 380054, India.
| | - Sagarkumar Patel
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research (NIPER), Ahmedabad, Gujarat 380054, India.
| | - Amit Shard
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research (NIPER), Ahmedabad, Gujarat 380054, India.
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8
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Liang Q, Hayashi K, Rabeda K, Jimenez-Santiago JL, Song D. Piano-Stool Iron Complexes as Precatalysts for gem-Specific Dimerization of Terminal Alkynes. Organometallics 2020. [DOI: 10.1021/acs.organomet.0c00271] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Qiuming Liang
- Davenport Chemical Research Laboratories, Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario M5S 3H6, Canada
| | - Kasumi Hayashi
- Davenport Chemical Research Laboratories, Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario M5S 3H6, Canada
| | - Karolina Rabeda
- Davenport Chemical Research Laboratories, Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario M5S 3H6, Canada
| | - Jose L. Jimenez-Santiago
- Davenport Chemical Research Laboratories, Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario M5S 3H6, Canada
| | - Datong Song
- Davenport Chemical Research Laboratories, Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario M5S 3H6, Canada
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9
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Affiliation(s)
- Qiuming Liang
- Davenport Chemical Research Laboratories, Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario M5S 3H6, Canada
| | - Kasumi Hayashi
- Davenport Chemical Research Laboratories, Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario M5S 3H6, Canada
| | - Datong Song
- Davenport Chemical Research Laboratories, Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario M5S 3H6, Canada
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10
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Beattie JW, Wang C, Zhang H, Krogman JP, Foxman BM, Thomas CM. Dimerization of terminal alkynes promoted by a heterobimetallic Zr/Co complex. Dalton Trans 2020; 49:2407-2411. [PMID: 32022087 DOI: 10.1039/d0dt00334d] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Enynes are important synthetic intermediates that are also found in a variety of natural products and other biologically relevant molecules. The most atom economical synthetic route to enynes is via the direct coupling of readily available terminal alkyne precursors. Towards this goal, we demonstrate the formation of 1,3-enynes from terminal alkynes facilitated by a reduced ZrIV/Co-I heterobimetallic complex. An intermediate is trapped as a tBuNC adduct, revealing that bimetallic activation of the terminal C-H bond of the alkyne is an essential mechanistic step.
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Affiliation(s)
- Jeffrey W Beattie
- Department of Chemistry and Biochemistry, The Ohio State University, 100 W 18th Ave., Columbus, OH 43210, USA.
| | - Canning Wang
- Department of Chemistry and Biochemistry, The Ohio State University, 100 W 18th Ave., Columbus, OH 43210, USA.
| | - Hongtu Zhang
- Department of Chemistry and Biochemistry, The Ohio State University, 100 W 18th Ave., Columbus, OH 43210, USA.
| | - Jeremy P Krogman
- Department of Chemistry, Brandeis University, 415 South Street, Waltham, MA 02454, USA and School of Physical Science and Technology, ShanghaiTech University, Pudong, Shanghai, 201210, China
| | - Bruce M Foxman
- Department of Chemistry, Brandeis University, 415 South Street, Waltham, MA 02454, USA
| | - Christine M Thomas
- Department of Chemistry and Biochemistry, The Ohio State University, 100 W 18th Ave., Columbus, OH 43210, USA.
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11
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Temkin ON. “Golden Age” of Homogeneous Catalysis Chemistry of Alkynes: Dimerization and Oligomerization of Alkynes. KINETICS AND CATALYSIS 2020. [DOI: 10.1134/s0023158419060120] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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12
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Ueda Y, Tsurugi H, Mashima K. Cobalt‐Catalyzed
E
‐Selective Cross‐Dimerization of Terminal Alkynes: A Mechanism Involving Cobalt(0/II) Redox Cycles. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.201913835] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Yohei Ueda
- Department of Chemistry Graduate School of Engineering Science Osaka University, Toyonaka Osaka Japan
| | - Hayato Tsurugi
- Department of Chemistry Graduate School of Engineering Science Osaka University, Toyonaka Osaka Japan
| | - Kazushi Mashima
- Department of Chemistry Graduate School of Engineering Science Osaka University, Toyonaka Osaka Japan
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13
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Duan XF. Iron catalyzed stereoselective alkene synthesis: a sustainable pathway. Chem Commun (Camb) 2020; 56:14937-14961. [DOI: 10.1039/d0cc04882h] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Replacing expensive or toxic transition metals with iron has become an important trend. This article summarises the recent progresses of a wide range of Fe-catalyzed reactions for accessing various stereodefined alkenes.
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14
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Ueda Y, Tsurugi H, Mashima K. Cobalt-Catalyzed E-Selective Cross-Dimerization of Terminal Alkynes: A Mechanism Involving Cobalt(0/II) Redox Cycles. Angew Chem Int Ed Engl 2019; 59:1552-1556. [PMID: 31710140 DOI: 10.1002/anie.201913835] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2019] [Indexed: 11/08/2022]
Abstract
A highly E-selective cross-dimerization of terminal alkynes with either terminal silylacetylenes, tert-butylacetylene, or 1-trimethylsilyloxy-1,1-diphenyl-2-propyne in the presence of a dichlorocobalt(II) complex bearing a sterically demanding 2,9-bis(2,4,6-triisopropylphenyl)-1,10-phenanthroline, activated with two equivalents of EtMgBr, gives a variety of (E)-1,3-enynes. A well-characterized diolefin/cobalt(0) complex, with divinyltetramethyldisiloxane, acted as a catalytically active species without any activation, clearly indicating that a cobalt(0) species is involved in the catalytic cycle.
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Affiliation(s)
- Yohei Ueda
- Department of Chemistry, Graduate School of Engineering Science, Osaka University, Toyonaka, Osaka, Japan
| | - Hayato Tsurugi
- Department of Chemistry, Graduate School of Engineering Science, Osaka University, Toyonaka, Osaka, Japan
| | - Kazushi Mashima
- Department of Chemistry, Graduate School of Engineering Science, Osaka University, Toyonaka, Osaka, Japan
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15
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16
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Zhang J, Liang Z, Wang J, Guo Z, Liu C, Xie M. Metal-Free Synthesis of Functionalized Tetrasubstituted Alkenes by Three-Component Reaction of Alkynes, Iodine, and Sodium Sulfinates. ACS OMEGA 2018; 3:18002-18015. [PMID: 31458390 PMCID: PMC6643681 DOI: 10.1021/acsomega.8b02966] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/26/2018] [Accepted: 12/03/2018] [Indexed: 05/15/2023]
Abstract
An operationally simple, efficient, and metal-/peroxide-free three-component reaction of alkynes, iodine, and sodium sulfinates has been developed for the construction of highly functionalized tetrasubstituted alkenes. Iodo- and sulfonyl-containing tetrasubstituted alkenes, such as vinyl ketones, allylic alcohols, and conjugated enynes, could be obtained regio- and stereoselectively in up to 96% yield.
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17
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Liang Q, Sheng K, Salmon A, Zhou VY, Song D. Active Iron(II) Catalysts toward gem-Specific Dimerization of Terminal Alkynes. ACS Catal 2018. [DOI: 10.1021/acscatal.8b03552] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Qiuming Liang
- Davenport Chemical Research Laboratories, Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario M5S 3H6, Canada
| | - Kai Sheng
- Davenport Chemical Research Laboratories, Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario M5S 3H6, Canada
| | - Andrew Salmon
- Davenport Chemical Research Laboratories, Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario M5S 3H6, Canada
| | - Vivian Yue Zhou
- Davenport Chemical Research Laboratories, Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario M5S 3H6, Canada
| | - Datong Song
- Davenport Chemical Research Laboratories, Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario M5S 3H6, Canada
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18
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Affiliation(s)
- Shinji Yamada
- Department of Chemistry, Faculty of Science, Ochanomizu University, 2-1-1 Otsuka, Bunkyo-ku, Tokyo 112-8610, Japan
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19
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Geer AM, Julián A, López JA, Ciriano MA, Tejel C. Pseudo-tetrahedral Rhodium and Iridium Complexes: Catalytic Synthesis of E-Enynes. Chemistry 2018; 24:17545-17556. [PMID: 30207408 DOI: 10.1002/chem.201803878] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2018] [Indexed: 01/04/2023]
Abstract
The reactions of the rhodium(I) and iridium(I) complexes [M(PhBP3 )(C2 H4 )(NCMe)] (PhBP3 =PhB(CH2 PPh2 )3 - ) with alkynes have resulted in the synthesis of a new family of pseudo-tetrahedral complexes, [M(PhBP3 )(RC≡CR')] (M=Rh, Ir), which contain the alkyne as a four-electron donor. The reactions of these unusual compounds with two-electron donors (L=PMe3 , CNtBu) produced a change in the "donicity" of the alkyne from a 4e- to a 2e- donor to give five-coordinate complexes. These were the final products with the iridium complexes, whereas further reactions took place with the rhodium complexes. In particular, C(sp)-H bond activation of the alkyne occurred leading to hydrido alkynyl complexes. This process is essential for the further reactivity of the alkynes, and if the alkyne itself was used as reagent, E-enyne complexes were obtained. As a consequence of this chemistry, we show that the complex [Rh(PhBP3 )(C2 H4 )(NCMe)] is a very efficient pre-catalyst for the regioselective di- and trimerization of terminal alkynes to E-enynes and benzene derivatives, respectively. Interestingly, acetonitrile significantly enhanced the catalytic activity by facilitating the C(sp)-H bond activation step. A hydrometalation mechanism to account for these experimental observations is proposed.
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Affiliation(s)
- Ana M Geer
- Departamento de Química Inorgánica, Instituto de Síntesis QuímicayCatálisis Homogénea-ISQCH, CSIC-Universidad de Zaragoza, Pedro Cerbuna 12, 50009, Zaragoza, Spain
| | - Alejandro Julián
- Departamento de Química Inorgánica, Instituto de Síntesis QuímicayCatálisis Homogénea-ISQCH, CSIC-Universidad de Zaragoza, Pedro Cerbuna 12, 50009, Zaragoza, Spain
| | - José A López
- Departamento de Química Inorgánica, Instituto de Síntesis QuímicayCatálisis Homogénea-ISQCH, CSIC-Universidad de Zaragoza, Pedro Cerbuna 12, 50009, Zaragoza, Spain
| | - Miguel A Ciriano
- Departamento de Química Inorgánica, Instituto de Síntesis QuímicayCatálisis Homogénea-ISQCH, CSIC-Universidad de Zaragoza, Pedro Cerbuna 12, 50009, Zaragoza, Spain
| | - Cristina Tejel
- Departamento de Química Inorgánica, Instituto de Síntesis QuímicayCatálisis Homogénea-ISQCH, CSIC-Universidad de Zaragoza, Pedro Cerbuna 12, 50009, Zaragoza, Spain
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20
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Brewer SM, Palacios PM, Johnston HM, Pierce BS, Green KN. Isolation and identification of the pre-catalyst in iron-catalyzed direct arylation of pyrrole with phenylboronic acid. Inorganica Chim Acta 2018. [DOI: 10.1016/j.ica.2018.03.036] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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21
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Xue F, Song X, Lin TT, Munkerup K, Albawardi SF, Huang KW, Hor TSA, Zhao J. Dimerization of Terminal Aryl Alkynes Catalyzed by Iron(II) Amine-Pyrazolyl Tripodal Complexes with E/ Z Selectivity Controlled by tert-Butoxide. ACS OMEGA 2018; 3:5071-5077. [PMID: 31458721 PMCID: PMC6641691 DOI: 10.1021/acsomega.8b00539] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/21/2018] [Accepted: 04/30/2018] [Indexed: 06/10/2023]
Abstract
The catalytic activity of iron(II) complexes with functionalized amine-pyrazolyl tripodal ligands toward dimerization of terminal alkynes in the presence a base (KO t Bu or NaO t Bu) has been studied. An unusual E/Z selectivity of the reaction determined by tert-butoxide was observed.
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Affiliation(s)
- Fei Xue
- Department
of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543, Singapore
| | - Xiaolu Song
- Institute
of Materials Research and Engineering, Agency
for Science Technology and Research (A*STAR), 2 Fusionopolis Way, Innovis, Singapore 138634, Singapore
| | - Ting Ting Lin
- Institute
of Materials Research and Engineering, Agency
for Science Technology and Research (A*STAR), 2 Fusionopolis Way, Innovis, Singapore 138634, Singapore
| | - Kristin Munkerup
- KAUST
Catalysis Center and Division of Physical Science and Engineering, King Abdullah University of Science and Technology
(KAUST), Thuwal 23955-6900, Saudi Arabia
| | - Saad Fahad Albawardi
- KAUST
Catalysis Center and Division of Physical Science and Engineering, King Abdullah University of Science and Technology
(KAUST), Thuwal 23955-6900, Saudi Arabia
| | - Kuo-Wei Huang
- KAUST
Catalysis Center and Division of Physical Science and Engineering, King Abdullah University of Science and Technology
(KAUST), Thuwal 23955-6900, Saudi Arabia
| | - T. S. Andy Hor
- Department
of Chemistry, The University of Hong Kong, Pokfulam, Hong Kong SAR, China
| | - Jin Zhao
- Institute
of Materials Research and Engineering, Agency
for Science Technology and Research (A*STAR), 2 Fusionopolis Way, Innovis, Singapore 138634, Singapore
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22
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Xu D, Sun Q, Quan Z, Wang X, Sun W. Cobalt-Catalyzed Dimerization and Homocoupling of Terminal Alkynes. ASIAN J ORG CHEM 2017. [DOI: 10.1002/ajoc.201700587] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Daqian Xu
- College of Chemistry and Chemical Engineering; Northwest Normal University; Lanzhou 730070 Gansu China
| | - Qiangsheng Sun
- State Key Laboratory for Oxo Synthesis and Selective Oxidation; Chinese Academy of Sciences; Lanzhou 730000 China
| | - Zhengjun Quan
- College of Chemistry and Chemical Engineering; Northwest Normal University; Lanzhou 730070 Gansu China
| | - Xicun Wang
- College of Chemistry and Chemical Engineering; Northwest Normal University; Lanzhou 730070 Gansu China
| | - Wei Sun
- State Key Laboratory for Oxo Synthesis and Selective Oxidation; Chinese Academy of Sciences; Lanzhou 730000 China
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23
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Midya GC, Parasar B, Maiti S, Dash J. Bipyridine Facilitates Regioselective Dimerization of Alkynes in the Absence of Transition Metal. ChemistrySelect 2017. [DOI: 10.1002/slct.201701091] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Ganesh Chandra Midya
- Department of Organic Chemistry; Indian Association for the Cultivation of Science, Jadavpur; Kolkata- 700032 India
| | - Bibudha Parasar
- Department of Organic Chemistry; Indian Association for the Cultivation of Science, Jadavpur; Kolkata- 700032 India
| | - Subhadip Maiti
- Department of Organic Chemistry; Indian Association for the Cultivation of Science, Jadavpur; Kolkata- 700032 India
| | - Jyotirmayee Dash
- Department of Organic Chemistry; Indian Association for the Cultivation of Science, Jadavpur; Kolkata- 700032 India
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24
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Melaimi M, Jazzar R, Soleilhavoup M, Bertrand G. Cyclische Alkylaminocarbene (CAACs): Neues von guten Bekannten. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201702148] [Citation(s) in RCA: 203] [Impact Index Per Article: 29.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Mohand Melaimi
- UCSD-CNRS Joint Research Chemistry Laboratory, UMI 3555, Department of Chemistry and Biochemistry University of California, San Diego La Jolla CA 92093-0358 USA
| | - Rodolphe Jazzar
- UCSD-CNRS Joint Research Chemistry Laboratory, UMI 3555, Department of Chemistry and Biochemistry University of California, San Diego La Jolla CA 92093-0358 USA
| | - Michèle Soleilhavoup
- UCSD-CNRS Joint Research Chemistry Laboratory, UMI 3555, Department of Chemistry and Biochemistry University of California, San Diego La Jolla CA 92093-0358 USA
| | - Guy Bertrand
- UCSD-CNRS Joint Research Chemistry Laboratory, UMI 3555, Department of Chemistry and Biochemistry University of California, San Diego La Jolla CA 92093-0358 USA
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25
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Melaimi M, Jazzar R, Soleilhavoup M, Bertrand G. Cyclic (Alkyl)(amino)carbenes (CAACs): Recent Developments. Angew Chem Int Ed Engl 2017; 56:10046-10068. [DOI: 10.1002/anie.201702148] [Citation(s) in RCA: 507] [Impact Index Per Article: 72.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2017] [Indexed: 11/07/2022]
Affiliation(s)
- Mohand Melaimi
- UCSD-CNRS Joint Research Chemistry Laboratory, UMI 3555, Department of Chemistry and Biochemistry University of California, San Diego La Jolla CA 92093-0358 USA
| | - Rodolphe Jazzar
- UCSD-CNRS Joint Research Chemistry Laboratory, UMI 3555, Department of Chemistry and Biochemistry University of California, San Diego La Jolla CA 92093-0358 USA
| | - Michèle Soleilhavoup
- UCSD-CNRS Joint Research Chemistry Laboratory, UMI 3555, Department of Chemistry and Biochemistry University of California, San Diego La Jolla CA 92093-0358 USA
| | - Guy Bertrand
- UCSD-CNRS Joint Research Chemistry Laboratory, UMI 3555, Department of Chemistry and Biochemistry University of California, San Diego La Jolla CA 92093-0358 USA
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26
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Liang Q, Osten KM, Song D. Iron-Catalyzed gem
-Specific Dimerization of Terminal Alkynes. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201700904] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Qiuming Liang
- Department of Chemistry; University of Toronto; 80 St. George Street Toronto Ontario M5S 3H6 Canada
| | - Kimberly M. Osten
- Department of Chemistry; University of Toronto; 80 St. George Street Toronto Ontario M5S 3H6 Canada
| | - Datong Song
- Department of Chemistry; University of Toronto; 80 St. George Street Toronto Ontario M5S 3H6 Canada
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27
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Liang Q, Osten KM, Song D. Iron-Catalyzed gem
-Specific Dimerization of Terminal Alkynes. Angew Chem Int Ed Engl 2017; 56:6317-6320. [DOI: 10.1002/anie.201700904] [Citation(s) in RCA: 46] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2017] [Indexed: 11/10/2022]
Affiliation(s)
- Qiuming Liang
- Department of Chemistry; University of Toronto; 80 St. George Street Toronto Ontario M5S 3H6 Canada
| | - Kimberly M. Osten
- Department of Chemistry; University of Toronto; 80 St. George Street Toronto Ontario M5S 3H6 Canada
| | - Datong Song
- Department of Chemistry; University of Toronto; 80 St. George Street Toronto Ontario M5S 3H6 Canada
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28
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Lin MH, Chen YC, Chiu SH, Liang KY, Lee YL, Chuang TH. Stereoselective preparation of conjugated (Z)-1,3-enynes by dehydration reactions of allenic bromohydrins and the use of the enynes in base-mediated tandem allylation ene-carbocyclization reactions with β-ketoesters. Org Biomol Chem 2017; 15:605-609. [PMID: 27942659 DOI: 10.1039/c6ob02178f] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A procedure has been developed for the concise, stereoselective synthesis of (Z)-5-bromo-4-aryl-pent-3-en-1-ynes through Sc(OTf)3 catalyzed dehydration reactions of allenic bromohydrins. (Z)-1,3-Enynes are transformed to methylenecyclopentenes when subjected to a sequential, one-pot process involving base mediated allylation reactions with ethyl acetoacetate followed by ene-carbocyclization reactions. An unprecedented rearrangement reaction involving 1,5-acyl migration takes place when the methylenecyclopentenes are treated with acid to form highly substituted cyclopentadienes.
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Affiliation(s)
- Mei-Huey Lin
- Department of Chemistry, National Changhua University of Education, Changhua, Taiwan 50007.
| | - Yu-Chun Chen
- Department of Chemistry, National Changhua University of Education, Changhua, Taiwan 50007.
| | - Shih-Hao Chiu
- Department of Chemistry, National Changhua University of Education, Changhua, Taiwan 50007.
| | - Kung-Yu Liang
- Department of Chemistry, National Changhua University of Education, Changhua, Taiwan 50007.
| | - Yi-Lin Lee
- Department of Chemistry, National Changhua University of Education, Changhua, Taiwan 50007.
| | - Tsung-Hsun Chuang
- Department of Chemistry, National Changhua University of Education, Changhua, Taiwan 50007.
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29
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A copper (I or II)/diethylphosphite catalytic system for base-free additive dimerization of alkynes. Tetrahedron 2017. [DOI: 10.1016/j.tet.2016.11.073] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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30
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Kiyota S, Soeta H, Komine N, Komiya S, Hirano M. E-Selective dimerization of phenylacetylene catalyzed by cationic tris(μ-hydroxo)diruthenium(II) complex and the mechanistic insight: The role of two ruthenium centers in catalysis. ACTA ACUST UNITED AC 2017. [DOI: 10.1016/j.molcata.2016.08.027] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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31
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Bhunia M, Sahoo SR, Vijaykumar G, Adhikari D, Mandal SK. Cyclic (Alkyl)amino Carbene Based Iron Catalyst for Regioselective Dimerization of Terminal Arylalkynes. Organometallics 2016. [DOI: 10.1021/acs.organomet.6b00703] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Mrinal Bhunia
- Department
of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur 741246, India
| | - Sumeet R. Sahoo
- Department
of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur 741246, India
| | - Gonela Vijaykumar
- Department
of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur 741246, India
| | - Debashis Adhikari
- Department
of Chemical Sciences, Indian Institute of Science Education and Research Mohali, SAS Nagar 140306, India
| | - Swadhin K. Mandal
- Department
of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur 741246, India
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32
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Zhou Y, Ye F, Zhou Q, Zhang Y, Wang J. Cu(I)-Catalyzed Tandem Reaction of Carbene Coupling and Horner–Wadsworth–Emmons Type Olefination: Access toward Enynes. Org Lett 2016; 18:2024-7. [DOI: 10.1021/acs.orglett.6b00631] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Yujing Zhou
- Beijing
National Laboratory of Molecular Sciences (BNLMS) and Key Laboratory
of Bioorganic Chemistry and Molecular Engineering of Ministry of Education,
College of Chemistry, Peking University, Beijing 100871, China
| | - Fei Ye
- Beijing
National Laboratory of Molecular Sciences (BNLMS) and Key Laboratory
of Bioorganic Chemistry and Molecular Engineering of Ministry of Education,
College of Chemistry, Peking University, Beijing 100871, China
| | - Qi Zhou
- Beijing
National Laboratory of Molecular Sciences (BNLMS) and Key Laboratory
of Bioorganic Chemistry and Molecular Engineering of Ministry of Education,
College of Chemistry, Peking University, Beijing 100871, China
| | - Yan Zhang
- Beijing
National Laboratory of Molecular Sciences (BNLMS) and Key Laboratory
of Bioorganic Chemistry and Molecular Engineering of Ministry of Education,
College of Chemistry, Peking University, Beijing 100871, China
| | - Jianbo Wang
- Beijing
National Laboratory of Molecular Sciences (BNLMS) and Key Laboratory
of Bioorganic Chemistry and Molecular Engineering of Ministry of Education,
College of Chemistry, Peking University, Beijing 100871, China
- State
Key Laboratory of Organometallic Chemistry, Chinese Academy of Sciences, Shanghai 200032, China
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33
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Rivada-Wheelaghan O, Chakraborty S, Shimon LJW, Ben-David Y, Milstein D. Z-Selective (Cross-)Dimerization of Terminal Alkynes Catalyzed by an Iron Complex. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201601382] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
| | - Subrata Chakraborty
- Department of Organic Chemistry; Weizmann Institute of Science; 76100 Rehovot Israel
| | - Linda J. W. Shimon
- Chemical Research Support; Weizmann Institute of Science; 71600 Rehovot Israel
| | - Yehoshoa Ben-David
- Department of Organic Chemistry; Weizmann Institute of Science; 76100 Rehovot Israel
| | - David Milstein
- Department of Organic Chemistry; Weizmann Institute of Science; 76100 Rehovot Israel
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34
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Rivada-Wheelaghan O, Chakraborty S, Shimon LJW, Ben-David Y, Milstein D. Z-Selective (Cross-)Dimerization of Terminal Alkynes Catalyzed by an Iron Complex. Angew Chem Int Ed Engl 2016; 55:6942-5. [DOI: 10.1002/anie.201601382] [Citation(s) in RCA: 89] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2016] [Indexed: 11/10/2022]
Affiliation(s)
| | - Subrata Chakraborty
- Department of Organic Chemistry; Weizmann Institute of Science; 76100 Rehovot Israel
| | - Linda J. W. Shimon
- Chemical Research Support; Weizmann Institute of Science; 71600 Rehovot Israel
| | - Yehoshoa Ben-David
- Department of Organic Chemistry; Weizmann Institute of Science; 76100 Rehovot Israel
| | - David Milstein
- Department of Organic Chemistry; Weizmann Institute of Science; 76100 Rehovot Israel
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35
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Zhou Y, Zhang Y, Wang J. Recent advances in transition-metal-catalyzed synthesis of conjugated enynes. Org Biomol Chem 2016; 14:6638-50. [DOI: 10.1039/c6ob00944a] [Citation(s) in RCA: 92] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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36
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Mechanisms for the synthesis of conjugated enynes from diphenylacetylene and trimethylsilylacetylene catalyzed by a nickel(0) complex: DFT study of ligand-controlled selectivity. J Mol Model 2015; 21:135. [DOI: 10.1007/s00894-015-2672-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2015] [Accepted: 03/31/2015] [Indexed: 10/23/2022]
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37
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Midya GC, Kapat A, Maiti S, Dash J. Transition-metal-free hydration of nitriles using potassium tert-butoxide under anhydrous conditions. J Org Chem 2015; 80:4148-51. [PMID: 25786059 DOI: 10.1021/jo502752u] [Citation(s) in RCA: 56] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Potassium tert-butoxide acts as a nucleophilic oxygen source during the hydration of nitriles to give the corresponding amides under anhydrous conditions. The reaction proceeds smoothly for a broad range of substrates under mild conditions, providing an efficient and economically affordable synthetic route to the amides in excellent yields. This protocol does not need any transition-metal catalyst or any special experimental setup and is easily scalable to bulk scale synthesis. A single-electron-transfer radical mechanism as well as an ionic mechanism have been proposed for the hydration process.
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Affiliation(s)
- Ganesh Chandra Midya
- Department of Organic Chemistry, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700032, India
| | - Ajoy Kapat
- Department of Organic Chemistry, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700032, India
| | - Subhadip Maiti
- Department of Organic Chemistry, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700032, India
| | - Jyotirmayee Dash
- Department of Organic Chemistry, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700032, India
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38
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Affiliation(s)
- Ingmar Bauer
- Department Chemie, Technische Universität Dresden, Bergstraße 66, 01069 Dresden, Germany
| | - Hans-Joachim Knölker
- Department Chemie, Technische Universität Dresden, Bergstraße 66, 01069 Dresden, Germany
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39
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Hori S, Murai M, Takai K. Rhenium-Catalyzed anti-Markovnikov Addition Reaction of Methanetricarboxylates to Unactivated Terminal Acetylenes. J Am Chem Soc 2015; 137:1452-7. [DOI: 10.1021/ja5090755] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Shunsuke Hori
- Division of Chemistry and Biotechnology, Graduate School of Natural
Science and Technology and ‡Research Center of New Functional Materials for Energy
Production, Storage and Transport, Okayama University, 3-1-1 Tsushimanaka, Kita-ku, Okayama, 700-8530, Japan
| | - Masahito Murai
- Division of Chemistry and Biotechnology, Graduate School of Natural
Science and Technology and ‡Research Center of New Functional Materials for Energy
Production, Storage and Transport, Okayama University, 3-1-1 Tsushimanaka, Kita-ku, Okayama, 700-8530, Japan
| | - Kazuhiko Takai
- Division of Chemistry and Biotechnology, Graduate School of Natural
Science and Technology and ‡Research Center of New Functional Materials for Energy
Production, Storage and Transport, Okayama University, 3-1-1 Tsushimanaka, Kita-ku, Okayama, 700-8530, Japan
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40
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Dhokale B, Jadhav T, Mobin SM, Misra R. Meso enyne substituted BODIPYs: synthesis, structure and properties. Dalton Trans 2015; 44:15803-12. [DOI: 10.1039/c5dt00565e] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
We report the synthesis of meso enyne substituted BODIPYs by the reaction of 8-chloro BODIPY with terminal alkynes under Sonogashira coupling conditions, and by Pd–Cu catalyzed hydroalkynylation reaction of terminal alkynes, across the –CC– bond of meso alkynylated BODIPYs.
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Affiliation(s)
- Bhausaheb Dhokale
- Department of Chemistry
- Indian Institute of Technology
- Indore 452 017
- India
| | - Thaksen Jadhav
- Department of Chemistry
- Indian Institute of Technology
- Indore 452 017
- India
| | - Shaikh M. Mobin
- Department of Chemistry
- Indian Institute of Technology
- Indore 452 017
- India
| | - Rajneesh Misra
- Department of Chemistry
- Indian Institute of Technology
- Indore 452 017
- India
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41
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Zhang H, Bao X. Computational insight into the mechanism of the Pd(0)–Brønsted acid cooperatively catalysed head-to-tail dimerization of terminal alkynes. RSC Adv 2015. [DOI: 10.1039/c5ra14086b] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
The Pd(0)–Brønsted acid cooperatively catalysed head-to-tail dimerization of terminal alkynes was computationally studied to gain a mechanistic insight.
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Affiliation(s)
- Hao Zhang
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
- Suzhou
- China
| | - Xiaoguang Bao
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
- Suzhou
- China
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42
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Liu G, Kong W, Che J, Zhu G. Palladium-Catalyzed Cross Addition of Terminal Alkynes to Aryl Ynamides: An Unusualtrans-Hydroalkynylation Reaction. Adv Synth Catal 2014. [DOI: 10.1002/adsc.201400572] [Citation(s) in RCA: 29] [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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43
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Paladhi S, Das J, Samanta M, Dash J. Asymmetric Aldol Reaction of Thiazole-Carbaldehydes: Regio- and Stereoselective Synthesis of Tubuvalin Analogues. Adv Synth Catal 2014. [DOI: 10.1002/adsc.201400640] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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44
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Pell CJ, Ozerov OV. A Series of Pincer-Ligated Rhodium Complexes as Catalysts for the Dimerization of Terminal Alkynes. ACS Catal 2014. [DOI: 10.1021/cs5009317] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Christopher J. Pell
- Department of Chemistry, Texas A&M University, 3255 TAMU, College Station, Texas 77842, United States
| | - Oleg V. Ozerov
- Department of Chemistry, Texas A&M University, 3255 TAMU, College Station, Texas 77842, United States
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45
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Zatolochnaya OV, Gordeev EG, Jahier C, Ananikov VP, Gevorgyan V. Carboxylate switch between hydro- and carbopalladation pathways in regiodivergent dimerization of alkynes. Chemistry 2014; 20:9578-88. [PMID: 25043968 DOI: 10.1002/chem.201402809] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2014] [Indexed: 11/11/2022]
Abstract
Experimental and theoretical investigation of the regiodivergent palladium-catalyzed dimerization of terminal alkynes is presented. Employment of N-heterocyclic carbene-based palladium catalyst in the presence of phosphine ligand allows for highly regio- and stereoselective head-to-head dimerization reaction. Alternatively, addition of carboxylate anion to the reaction mixture triggers selective head-to-tail coupling. Computational studies suggest that reaction proceeds via the hydropalladation pathway favoring head-to-head dimerization under neutral reaction conditions. The origin of the regioselectivity switch can be explained by the dual role of carboxylate anion. Thus, the removal of hydrogen atom by the carboxylate directs reaction from the hydropalladation to the carbopalladation pathway. Additionally, in the presence of the carboxylate anion intermediate, palladium complexes involved in the head-to-tail dimerization display higher stability compared to their analogues for the head-to-head reaction.
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Affiliation(s)
- Olga V Zatolochnaya
- Department of Chemistry, University of Illinois at Chicago, 845 West Taylor Street, Chicago, Illinois, 60607-7061 (USA)
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