1
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Shaff AB, Yang L, Lee MT, Lalic G. Stereospecific and Regioselective Synthesis of E-Allylic Alcohols through Reductive Cross Coupling of Terminal Alkynes. J Am Chem Soc 2023. [PMID: 37917569 DOI: 10.1021/jacs.3c06963] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2023]
Abstract
We have developed a convergent method for the synthesis of allylic alcohols that involves a reductive coupling of terminal alkynes with α-chloro boronic esters. The new method affords allylic alcohols with excellent regioselectivity (anti-Markovnikov) and an E/Z ratio greater than 200:1. The reaction can be performed in the presence of a wide range of functional groups and has a substrate scope that complements the stoichiometric alkenylation of α-chloro boronic esters performed using alkenyl lithium and Grignard reagents. The transformation is stereospecific and allows for the robust and highly selective synthesis of chiral allylic alcohols. Our studies support a mechanism that involves hydrocupration of the alkyne and cross-coupling of the alkenyl copper intermediate with α-chloro boronic esters. Experimental evidence excludes a radical mechanism of the cross-coupling step and is consistent with the formation of a boron-ate intermediate and a 1,2-metalate shift.
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Affiliation(s)
- Austin B Shaff
- Department of Chemistry, University of Washington, Seattle, Washington 98195, United States
| | - Langxuan Yang
- Department of Chemistry, University of Washington, Seattle, Washington 98195, United States
| | - Mitchell T Lee
- Department of Chemistry, University of Washington, Seattle, Washington 98195, United States
| | - Gojko Lalic
- Department of Chemistry, University of Washington, Seattle, Washington 98195, United States
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2
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Khamrai A, Ganesh V. Benchtop nickel-catalyzed reductive coupling of aldehydes with alkynes and ynamides. Chem Commun (Camb) 2023; 59:11141-11144. [PMID: 37650134 DOI: 10.1039/d3cc03322h] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/01/2023]
Abstract
We demonstrate the potential of Ni(COD)(DQ), a bench-stable Ni0 complex, as a catalyst for the reductive coupling of aldehydes with alkynes and ynamides, providing silylated allyl alcohols with excellent yields and regioselectivities. Mass spectrometric identification of the intermediates and DFT studies supported the proposed mechanism.
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Affiliation(s)
- Aankhi Khamrai
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur, West Bengal 721302, India.
| | - Venkataraman Ganesh
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur, West Bengal 721302, India.
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3
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Ma X, Xu J, Liu C, Zhang D. DFT calculations rationalize regioselectivity and chemodivergence in nickel-catalyzed couplings of aldehyde, alkyne, and dialkylsilane/trialkylsilane. MOLECULAR CATALYSIS 2022. [DOI: 10.1016/j.mcat.2022.112618] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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4
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Patil RD, Dutta M, Pratihar S. Hydrogenation Involving Two Different Proton- and Hydride-Transferring Reagents through Metal–Ligand Cooperation: Mechanism and Scope. Organometallics 2022. [DOI: 10.1021/acs.organomet.2c00229] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Rahul Daga Patil
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
- Inorganic Materials and Catalysis Division, CSIR─Central Salt & Marine Chemicals Research Institute, G.B. Marg, Bhavnagar 364002, Gujarat, India
| | - Manali Dutta
- Department of Chemical Sciences, Tezpur University, Tezpur 784028, Assam, India
| | - Sanjay Pratihar
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
- Inorganic Materials and Catalysis Division, CSIR─Central Salt & Marine Chemicals Research Institute, G.B. Marg, Bhavnagar 364002, Gujarat, India
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5
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calogero F, Magagnano G, Potenti S, Gualandi A, Fermi A, Ceroni P, Cozzi PG. Dual Photoredox and Nickel Catalysed Reductive Coupling of Alkynes and Aldehydes. Adv Synth Catal 2022. [DOI: 10.1002/adsc.202200589] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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6
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Xiao J, Montgomery J. Nickel-Catalyzed Defluorinative Coupling of Aliphatic Aldehydes with Trifluoromethyl Alkenes. ACS Catal 2022; 12:2463-2471. [PMID: 35992737 PMCID: PMC9390876 DOI: 10.1021/acscatal.1c05801] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
A simple procedure is reported for the nickel-catalyzed defluorinative alkylation of unactivated aliphatic aldehydes. The process involves the catalytic reductive union of trifluoromethyl alkenes with aldehydes using a nickel complex of a 6,6'-disubstituted bipyridine ligand with zinc metal as the terminal reductant. The protocol is distinguished by its broad substrate scope, mild conditions, and simple catalytic setup. Reaction outcomes are consistent with the intermediacy of an α-silyloxy(alkyl)nickel intermediate generated by a low-valent nickel catalyst, silyl electrophile, and the aldehyde substrate. Mechanistic findings with cyclopropanecarboxaldehyde provide insights into nature of the reactive intermediates and illustrate fundamental reactivity differences that are governed by subtle changes in ligand and substrate structure.
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Affiliation(s)
| | - John Montgomery
- Corresponding authors: John Montgomery - Department of Chemistry, University of Michigan, 930 N. University Ave. Ann Arbor, MI 48109-1055, USA,
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7
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Min KH, Iqbal N, Cho EJ. Ni-Catalyzed Reductive Coupling of Alkynes and Amides to Access Multi-Functionalized Indoles. Org Lett 2022; 24:989-994. [PMID: 35050641 DOI: 10.1021/acs.orglett.1c03971] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
A nickel-catalyzed reductive coupling of alkynes and amides, followed by base-free transmetalation, proceeded selectively in the presence of an uncommon bidentate primary aminophosphine ligand to access highly functionalized indoles comprising biologically important trifluoromethyl groups and challenging electron-rich alkenyl groups at the 2- and 3-positions, respectively. Indole molecules were installed within natural products or drug molecules under mild conditions, and a trifluoromethylated analogue of a drug molecule (pravadoline) was also synthesized.
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Affiliation(s)
- Kwan Hong Min
- Department of Chemistry, Chung-Ang University, 84 Heukseok-ro, Dongjak-gu, Seoul 06974, Republic of Korea
| | - Naeem Iqbal
- Department of Chemistry, Chung-Ang University, 84 Heukseok-ro, Dongjak-gu, Seoul 06974, Republic of Korea
| | - Eun Jin Cho
- Department of Chemistry, Chung-Ang University, 84 Heukseok-ro, Dongjak-gu, Seoul 06974, Republic of Korea
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8
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Tendera L, Helm M, Krahfuss MJ, Kuntze-Fechner MW, Radius U. Case Study of N- i Pr versus N-Mes Substituted NHC Ligands in Nickel Chemistry: The Coordination and Cyclotrimerization of Alkynes at [Ni(NHC) 2 ]. Chemistry 2021; 27:17849-17861. [PMID: 34713939 PMCID: PMC9299202 DOI: 10.1002/chem.202103093] [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: 08/25/2021] [Indexed: 01/21/2023]
Abstract
A case study on the effect of the employment of two different NHC ligands in complexes [Ni(NHC)2] (NHC=iPr2ImMe1Me, Mes2Im 2) and their behavior towards alkynes is reported. The reaction of a mixture of [Ni2(iPr2ImMe)4(μ‐(η2 : η2)‐COD)] B/ [Ni(iPr2ImMe)2(η4‐COD)] B’ or [Ni(Mes2Im)2] 2, respectively, with alkynes afforded complexes [Ni(NHC)2(η2‐alkyne)] (NHC=iPr2ImMe: alkyne=MeC≡CMe 3, H7C3C≡CC3H74, PhC≡CPh 5, MeOOCC≡CCOOMe 6, Me3SiC≡CSiMe37, PhC≡CMe 8, HC≡CC3H79, HC≡CPh 10, HC≡C(p‐Tol) 11, HC≡C(4‐tBu‐C6H4) 12, HC≡CCOOMe 13; NHC=Mes2Im: alkyne=MeC≡CMe 14, MeOOCC≡CCOOMe 15, PhC≡CMe 16, HC≡C(4‐tBu‐C6H4) 17, HC≡CCOOMe 18). Unusual rearrangement products 11 a and 12 a were identified for the complexes of the terminal alkynes HC≡C(p‐Tol) and HC≡C(4‐tBu‐C6H4), 11 and 12, which were formed by addition of a C−H bond of one of the NHC N‐iPr methyl groups to the C≡C triple bond of the coordinated alkyne. Complex 2 catalyzes the cyclotrimerization of 2‐butyne, 4‐octyne, diphenylacetylene, dimethyl acetylendicarboxylate, 1‐pentyne, phenylacetylene and methyl propiolate at ambient conditions, whereas 1Me is not a good catalyst. The reaction of 2 with 2‐butyne was monitored in some detail, which led to a mechanistic proposal for the cyclotrimerization at [Ni(NHC)2]. DFT calculations reveal that the differences between 1Me and 2 for alkyne cyclotrimerization lie in the energy profile of the initiation steps, which is very shallow for 2, and each step is associated with only a moderate energy change. The higher stability of 3 compared to 14 is attributed to a better electron transfer from the NHC to the metal to the alkyne ligand for the N‐alkyl substituted NHC, to enhanced Ni‐alkyne backbonding due to a smaller CNHC−Ni−CNHC bite angle, and to less steric repulsion of the smaller NHC iPr2ImMe.
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Affiliation(s)
- Lukas Tendera
- Institut für Anorganische Chemie, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074, Würzburg, Germany
| | - Moritz Helm
- Institut für Anorganische Chemie, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074, Würzburg, Germany
| | - Mirjam J Krahfuss
- Institut für Anorganische Chemie, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074, Würzburg, Germany
| | - Maximilian W Kuntze-Fechner
- Institut für Anorganische Chemie, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074, Würzburg, Germany
| | - Udo Radius
- Institut für Anorganische Chemie, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074, Würzburg, Germany
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9
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Chen W, Cheng Y, Zhang T, Mu Y, Jia W, Liu G. Ni/AntPohs-Catalyzed Stereoselective Asymmetric Intramolecular Reductive Coupling of N-1,6-Alkynones. J Org Chem 2021; 86:5166-5182. [PMID: 33760614 DOI: 10.1021/acs.joc.1c00079] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
An efficient nickel-catalyzed stereoselective asymmetric intramolecular reductive coupling of N-1,6-alkynones is reported. A P-chiral monophosphine ligand AntPhos was found to be a privileged catalyst for constructing versatile functionalized chiral pyrrolidine rings using triethylsilane as the reducing reagent. Concise synthesis of pyrrolidines with chiral tertiary allylic alcohols was achieved in high yields (99%), excellent stereoselectivity (>99:1 E/Z), and enantioselectivity (>99:1 er) with very broad substrate scope. Totally, thirty-five N-1,6-alkynones were synthesized and applied in this reaction successfully. This reaction can be scaled up to gram scale without loss of its enantioselectivity. Ligand effects and reaction mechanism are investigated in detail. While the developed asymmetric synthesis of pyrrolidine with chiral tertiary allylic alcohols is anticipated to find wider applications in organic synthesis and chemical biology, the discovered new reactions of N-1,6-alkynone with AntPhos using different catalyst systems would further expanded its new research fields and attract more detailed explorations in the future.
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Affiliation(s)
- Wanjun Chen
- Inner Mongolia Key Laboratory of Fine Organic Synthesis, College of Chemistry and Chemical Engineering, Inner Mongolia University, 235 University West Road, Hohhot 010021, China
| | - Yaping Cheng
- Inner Mongolia Key Laboratory of Fine Organic Synthesis, College of Chemistry and Chemical Engineering, Inner Mongolia University, 235 University West Road, Hohhot 010021, China
| | - Tao Zhang
- Inner Mongolia Key Laboratory of Fine Organic Synthesis, College of Chemistry and Chemical Engineering, Inner Mongolia University, 235 University West Road, Hohhot 010021, China
| | - Yu Mu
- Inner Mongolia Key Laboratory of Fine Organic Synthesis, College of Chemistry and Chemical Engineering, Inner Mongolia University, 235 University West Road, Hohhot 010021, China
| | - Wenqi Jia
- Inner Mongolia Key Laboratory of Fine Organic Synthesis, College of Chemistry and Chemical Engineering, Inner Mongolia University, 235 University West Road, Hohhot 010021, China
| | - Guodu Liu
- Inner Mongolia Key Laboratory of Fine Organic Synthesis, College of Chemistry and Chemical Engineering, Inner Mongolia University, 235 University West Road, Hohhot 010021, China.,State Key Laboratory of Bio-Organic and Natural Products Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Ling Ling Road, Shanghai 200032, China
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10
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Mu Y, Zhang T, Cheng Y, Fu W, Wei Z, Chen W, Liu G. Efficient synthesis of tetrahydrofurans with chiral tertiary allylic alcohols catalyzed by Ni/P-chiral ligand DI-BIDIME. Catal Sci Technol 2021. [DOI: 10.1039/d0cy02470h] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Efficient nickel-catalyzed stereoselective asymmetric intramolecular reductive cyclization of O-alkynones with P-chiral bisphosphorus ligand DI-BIDIME is reported.
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Affiliation(s)
- Yu Mu
- Inner Mongolia Key Laboratory of Fine Organic Synthesis
- College of Chemistry and Chemical Engineering
- Inner Mongolia University
- Hohhot 010021
- China
| | - Tao Zhang
- Inner Mongolia Key Laboratory of Fine Organic Synthesis
- College of Chemistry and Chemical Engineering
- Inner Mongolia University
- Hohhot 010021
- China
| | - Yaping Cheng
- Inner Mongolia Key Laboratory of Fine Organic Synthesis
- College of Chemistry and Chemical Engineering
- Inner Mongolia University
- Hohhot 010021
- China
| | - Wenzhen Fu
- State Key Laboratory of Bio-organic and Natural Products Chemistry
- Shanghai Institute of Organic Chemistry
- Chinese Academy of Sciences
- Shanghai 200032
- China
| | - Zuting Wei
- Inner Mongolia Key Laboratory of Fine Organic Synthesis
- College of Chemistry and Chemical Engineering
- Inner Mongolia University
- Hohhot 010021
- China
| | - Wanjun Chen
- Inner Mongolia Key Laboratory of Fine Organic Synthesis
- College of Chemistry and Chemical Engineering
- Inner Mongolia University
- Hohhot 010021
- China
| | - Guodu Liu
- Inner Mongolia Key Laboratory of Fine Organic Synthesis
- College of Chemistry and Chemical Engineering
- Inner Mongolia University
- Hohhot 010021
- China
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11
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Tong X, Luo SS, Shen H, Zhang S, Cao T, Luo YP, Huang LL, Ma XT, Liu XW. Nickel-catalyzed defluorinative alkylation of C(sp 2)–F bonds. Org Chem Front 2021. [DOI: 10.1039/d1qo00549a] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
A nickel-catalyzed defluorinative alkylation of unactivated C(sp2)–F electrophiles using commercially available trialkylaluminum reagents, thus forming the C(sp2)–C(sp3) bonds is reported.
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Affiliation(s)
- Xue Tong
- Sichuan Engineering Research Center for Biomimetic Synthesis of Natural Drugs
- School of Life Science and Engineering
- Southwest Jiaotong University
- Chengdu 610031
- China
| | - Si-Si Luo
- Sichuan Engineering Research Center for Biomimetic Synthesis of Natural Drugs
- School of Life Science and Engineering
- Southwest Jiaotong University
- Chengdu 610031
- China
| | - Hua Shen
- Sichuan Engineering Research Center for Biomimetic Synthesis of Natural Drugs
- School of Life Science and Engineering
- Southwest Jiaotong University
- Chengdu 610031
- China
| | - Shu Zhang
- Sichuan Engineering Research Center for Biomimetic Synthesis of Natural Drugs
- School of Life Science and Engineering
- Southwest Jiaotong University
- Chengdu 610031
- China
| | - Tian Cao
- Sichuan Engineering Research Center for Biomimetic Synthesis of Natural Drugs
- School of Life Science and Engineering
- Southwest Jiaotong University
- Chengdu 610031
- China
| | - Yi-Peng Luo
- Sichuan Engineering Research Center for Biomimetic Synthesis of Natural Drugs
- School of Life Science and Engineering
- Southwest Jiaotong University
- Chengdu 610031
- China
| | - Long-Ling Huang
- Sichuan Engineering Research Center for Biomimetic Synthesis of Natural Drugs
- School of Life Science and Engineering
- Southwest Jiaotong University
- Chengdu 610031
- China
| | - Xi-Tao Ma
- Hospital of Chengdu University of Traditional Chinese Medicine
- Chengdu 610072
- China
| | - Xiang-Wei Liu
- Sichuan Engineering Research Center for Biomimetic Synthesis of Natural Drugs
- School of Life Science and Engineering
- Southwest Jiaotong University
- Chengdu 610031
- China
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12
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Wang YJ, Yuan CH, Chu DZ, Jiao L. Regiocontrol in the oxidative Heck reaction of indole by ligand-enabled switch of the regioselectivity-determining step. Chem Sci 2020; 11:11042-11054. [PMID: 34094351 PMCID: PMC8162380 DOI: 10.1039/d0sc02246b] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2020] [Accepted: 09/13/2020] [Indexed: 11/22/2022] Open
Abstract
Efficient control of regioselectivity is a key concern in transition-metal-catalyzed direct C-H functionalization reactions. Various strategies for regiocontrol have been established by tuning the selectivity of the C-H activation step as a common mode. Herein, we present our study on an alternative mode of regiocontrol, in which the selectivity of the C-H activation step is no longer a key concern. We found that, in a reaction where the C-H activation step exhibits a different regio-preference from the subsequent functionalization step, a ligand-enabled switch of the regioselectivity-determining step could provide efficient regiocontrol. This mode has been exemplified by the Pd(ii)-catalyzed aerobic oxidative Heck reaction of indoles, in which a ligand-controlled C3-/C2-selectivity was achieved for the first time by the development of sulfoxide-2-hydroxypyridine (SOHP) ligands.
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Affiliation(s)
- Yu-Jie Wang
- Center of Basic Molecular Science (CBMS), Department of Chemistry, Tsinghua University Beijing 10084 China
| | - Chen-Hui Yuan
- Center of Basic Molecular Science (CBMS), Department of Chemistry, Tsinghua University Beijing 10084 China
| | - De-Zhao Chu
- Center of Basic Molecular Science (CBMS), Department of Chemistry, Tsinghua University Beijing 10084 China
| | - Lei Jiao
- Center of Basic Molecular Science (CBMS), Department of Chemistry, Tsinghua University Beijing 10084 China
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13
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Tendera L, Schaub T, Krahfuss MJ, Kuntze‐Fechner MW, Radius U. Large vs. Small NHC Ligands in Nickel(0) Complexes: The Coordination of Olefins, Ketones and Aldehydes at [Ni(NHC)
2
]. Eur J Inorg Chem 2020. [DOI: 10.1002/ejic.202000493] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Lukas Tendera
- Institut für Anorganische Chemie Julius‐Maximilians‐Universität Würzburg Am Hubland 97074 Würzburg Germany
| | - Thomas Schaub
- CaRLa (Catalysis Research Laboratory) Im Neuenheimer Feld 584 69120 Heidelberg Germany
- Organic Synthesis BASF SE Carl‐Bosch‐Strasse 38 67056 Ludwigshafen Germany
| | - Mirjam J. Krahfuss
- Institut für Anorganische Chemie Julius‐Maximilians‐Universität Würzburg Am Hubland 97074 Würzburg Germany
| | | | - Udo Radius
- Institut für Anorganische Chemie Julius‐Maximilians‐Universität Würzburg Am Hubland 97074 Würzburg Germany
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14
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Jafarpour F, Azizzade M, Golpazir-Sorkheh Y, Navid H, Rajai-Daryasarei S. Divergent Synthesis of α-Aroyloxy Ketones and Indenones: A Controlled Domino Radical Reaction for Di- and Trifunctionalization of Alkynes. J Org Chem 2020; 85:8287-8294. [DOI: 10.1021/acs.joc.0c00967] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Farnaz Jafarpour
- School of Chemistry, College of Science, University of Tehran, Tehran 14155-6619, Iran
| | - Meysam Azizzade
- School of Chemistry, College of Science, University of Tehran, Tehran 14155-6619, Iran
| | | | - Hamed Navid
- School of Chemistry, College of Science, University of Tehran, Tehran 14155-6619, Iran
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15
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Meyer CC, Ortiz E, Krische MJ. Catalytic Reductive Aldol and Mannich Reactions of Enone, Acrylate, and Vinyl Heteroaromatic Pronucleophiles. Chem Rev 2020; 120:3721-3748. [PMID: 32191438 PMCID: PMC7904107 DOI: 10.1021/acs.chemrev.0c00053] [Citation(s) in RCA: 41] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Catalytic reductive coupling of enone, acrylate, or vinyl heteroaromatic pronucleophiles with carbonyl or imine partners offers an alternative to base-mediated enolization in aldol- and Mannich-type reactions. In this review, direct catalytic reductive aldol and Mannich reactions are exhaustively catalogued on the basis of metal or organocatalyst. Stepwise processes involving enone conjugate reduction to form discrete enol or (metallo)enolate derivatives followed by introduction of carbonyl or imine electrophiles and aldol reactions initiated via enone conjugate addition are not covered.
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Affiliation(s)
- Cole C. Meyer
- University of Texas at Austin, Department of Chemistry, Welch Hall
(A5300), 105 E 24 St., Austin, TX 78712, USA
| | - Eliezer Ortiz
- University of Texas at Austin, Department of Chemistry, Welch Hall
(A5300), 105 E 24 St., Austin, TX 78712, USA
| | - Michael J. Krische
- University of Texas at Austin, Department of Chemistry, Welch Hall
(A5300), 105 E 24 St., Austin, TX 78712, USA
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16
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Kitahata S, Katsuyama A, Ichikawa S. A Synthesis Strategy for the Production of a Macrolactone of Gulmirecin A via a Ni(0)-Mediated Reductive Cyclization Reaction. Org Lett 2020; 22:2697-2701. [PMID: 32162928 DOI: 10.1021/acs.orglett.0c00665] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A synthesis strategy for the production of a key synthetic intermediate of gulmirecin A was described. The key reaction in the preparation of the 12-membered macrolactone is the Ni(0)-mediated reductive cyclization reaction of ynal using an N-heterocyclic carbene ligand and silane reductant. In addition, the α-selective glycosylation reaction of the macrolactone was performed to demonstrate the synthesis of gulmirecin and disciformycin precursors.
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Affiliation(s)
- Shun Kitahata
- Faculty of Pharmaceutical Science, Hokkaido University, Kita-12, Nishi-6, Kita-ku, Sapporo 060-0812, Japan
| | - Akira Katsuyama
- Faculty of Pharmaceutical Science, Hokkaido University, Kita-12, Nishi-6, Kita-ku, Sapporo 060-0812, Japan.,Center for Research and Education on Drug Discovery, Hokkaido University, Kita-12, Nishi-6, Kita-ku, Sapporo 060-0812, Japan
| | - Satoshi Ichikawa
- Faculty of Pharmaceutical Science, Hokkaido University, Kita-12, Nishi-6, Kita-ku, Sapporo 060-0812, Japan.,Center for Research and Education on Drug Discovery, Hokkaido University, Kita-12, Nishi-6, Kita-ku, Sapporo 060-0812, Japan
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17
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Shirataki H, Ohashi M, Ogoshi S. Nickel-Catalyzed Three-Component Coupling Reaction of Tetrafluoroethylene and Aldehydes with Silanes via Oxa-Nickelacycles. European J Org Chem 2018. [DOI: 10.1002/ejoc.201801721] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Hiroshi Shirataki
- Department of Applied Chemistry, Faculty of Engineering; Osaka University; Suita Osaka 565-0871 Japan
| | - Masato Ohashi
- Department of Applied Chemistry, Faculty of Engineering; Osaka University; Suita Osaka 565-0871 Japan
| | - Sensuke Ogoshi
- Department of Applied Chemistry, Faculty of Engineering; Osaka University; Suita Osaka 565-0871 Japan
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18
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Saito N, Sato Y. Transition Metal-Mediated Transformation of Ynamides and Application to Organic Synthesis. J SYN ORG CHEM JPN 2018. [DOI: 10.5059/yukigoseikyokaishi.76.699] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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19
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Zheng Y, Zi W. Transition-metal catalyzed enantioselective hydrofunctionalization of alkynes. Tetrahedron Lett 2018. [DOI: 10.1016/j.tetlet.2018.04.057] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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20
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Liu C, Wang Q. Alkenylation of C(sp
3
)−H Bonds by Zincation/Copper‐Catalyzed Cross‐Coupling with Iodonium Salts. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201713278] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Chuan Liu
- French Family Science Center Department of Chemistry Duke University 124 Science Drive Durham NC 27708 USA
- Current address: HitGen Ltd. Tianfu Life Science Park 88 South Keyuan Road Chengdu 610041 P. R. China
| | - Qiu Wang
- French Family Science Center Department of Chemistry Duke University 124 Science Drive Durham NC 27708 USA
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21
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Liu C, Wang Q. Alkenylation of C(sp 3 )-H Bonds by Zincation/Copper-Catalyzed Cross-Coupling with Iodonium Salts. Angew Chem Int Ed Engl 2018; 57:4727-4731. [PMID: 29479782 DOI: 10.1002/anie.201713278] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2017] [Revised: 02/06/2018] [Indexed: 12/20/2022]
Abstract
α-Vinylation of phosphonates, phosphine oxides, sulfones, sulfonamides, and sulfoxides has been achieved by selective C-H zincation and copper-catalyzed C(sp3 )-C(sp2 ) cross-coupling reaction using vinylphenyliodonium salts. The vinylation transformation proceeds in high efficiency and stereospecificity under mild reaction conditions. This zincative cross-coupling reaction represents a general alkenylation strategy, which is also applicable for α-alkenylation of esters, amides, and nitriles in the synthesis of β,γ-unsaturated carbonyl compounds.
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Affiliation(s)
- Chuan Liu
- French Family Science Center, Department of Chemistry, Duke University, 124 Science Drive, Durham, NC, 27708, USA.,Current address: HitGen Ltd., Tianfu Life Science Park, 88 South Keyuan Road, Chengdu, 610041, P. R. China
| | - Qiu Wang
- French Family Science Center, Department of Chemistry, Duke University, 124 Science Drive, Durham, NC, 27708, USA
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22
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Lu XY, Hong ML, Zhou HP, Wang Y, Wang JY, Ge XT. Trisubstituted olefin synthesis via Ni-catalyzed hydroalkylation of internal alkynes with non-activated alkyl halides. Chem Commun (Camb) 2018; 54:4417-4420. [DOI: 10.1039/c8cc01577e] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
The stereoselective synthesis of tri-substituted alkenes is challenging.
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Affiliation(s)
- Xiao-Yu Lu
- School of Materials and Chemical Engineering
- ChuZhou University
- Chuzhou
- China
- School of Chemistry and Chemical Engineering
| | - Mei-Lan Hong
- School of Materials and Chemical Engineering
- ChuZhou University
- Chuzhou
- China
| | - Hai-Pin Zhou
- School of Materials and Chemical Engineering
- ChuZhou University
- Chuzhou
- China
| | - Yue Wang
- School of Materials and Chemical Engineering
- ChuZhou University
- Chuzhou
- China
| | - Jin-Yu Wang
- School of Materials and Chemical Engineering
- ChuZhou University
- Chuzhou
- China
| | - Xiu-Tao Ge
- School of Materials and Chemical Engineering
- ChuZhou University
- Chuzhou
- China
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23
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Hayashi Y, Hoshimoto Y, Kumar R, Ohashi M, Ogoshi S. Nickel(0)-catalyzed Coupling Reactions of Carbonyls and Alkenes with Reducing Reagents Giving Six- and Seven-membered Benzocycloalkanols. CHEM LETT 2017. [DOI: 10.1246/cl.170394] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Yukari Hayashi
- Department of Applied Chemistry, Faculty of Engineering, Osaka University, Suita, Osaka 565-0871
| | - Yoichi Hoshimoto
- Department of Applied Chemistry, Faculty of Engineering, Osaka University, Suita, Osaka 565-0871
- Frontier Research Base for Global Young Researchers, Graduate School of Engineering, Osaka University, Suita, Osaka 565-0871
| | - Ravindra Kumar
- Department of Applied Chemistry, Faculty of Engineering, Osaka University, Suita, Osaka 565-0871
| | - Masato Ohashi
- Department of Applied Chemistry, Faculty of Engineering, Osaka University, Suita, Osaka 565-0871
| | - Sensuke Ogoshi
- Department of Applied Chemistry, Faculty of Engineering, Osaka University, Suita, Osaka 565-0871
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24
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Wang H, Lu G, Sormunen GJ, Malik HA, Liu P, Montgomery J. NHC Ligands Tailored for Simultaneous Regio- and Enantiocontrol in Nickel-Catalyzed Reductive Couplings. J Am Chem Soc 2017. [PMID: 28621131 DOI: 10.1021/jacs.7b04583] [Citation(s) in RCA: 53] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
An exceptionally hindered class of enantiopure NHC ligands has been developed. While racemic forms had previously been utilized, a scalable and practical route to the enantiopure form of this ligand class is described utilizing a Buchwald-Hartwig N,N-diarylation in a highly sterically demanding environment. Using this newly accessible ligand class, nickel-catalyzed enantioselective reductive coupling reactions of aldehydes and alkynes have been developed. These studies illustrate that the newly available NHC ligands are well suited for simultaneous control of regio- and enantioselectivity, even in cases with internal alkynes possessing only very subtle steric differences between two aliphatic substituents. The steric demand of the new ligand class enables a complementary regiochemical outcome compared with previously described enantioselective processes. Using this method, a number of allylic alcohol derivatives were efficiently obtained with high regioselectivity (up to >95:5) and high enantioselectivity (up to 94% ee). The reaction conditions can also be extended to the reaction of aldehydes and allenes, providing silyl-protected allylic alcohol derivatives possessing a terminal methylene substituent. Computational studies have explained the origin of the exceptional steric demand of this ligand class, the basis for enantioselectivity, and the cooperative relationship of the aldehyde, alkyne, and ligand in influencing enantioselectivity.
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Affiliation(s)
- Hengbin Wang
- Department of Chemistry, University of Michigan , 930 North University Avenue, Ann Arbor, Michigan 48109-1055, United States
| | - Gang Lu
- Department of Chemistry, University of Pittsburgh , Pittsburgh, Pennsylvania 15260, United States
| | - Grant J Sormunen
- Department of Chemistry, University of Michigan , 930 North University Avenue, Ann Arbor, Michigan 48109-1055, United States
| | - Hasnain A Malik
- Department of Chemistry, University of Michigan , 930 North University Avenue, Ann Arbor, Michigan 48109-1055, United States
| | - Peng Liu
- Department of Chemistry, University of Pittsburgh , Pittsburgh, Pennsylvania 15260, United States
| | - John Montgomery
- Department of Chemistry, University of Michigan , 930 North University Avenue, Ann Arbor, Michigan 48109-1055, United States
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25
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Rodrigo SK, Guan H. Mechanistic Study of Nickel-Catalyzed Reductive Coupling of Ynoates and Aldehydes. J Org Chem 2017; 82:5230-5235. [PMID: 28460172 DOI: 10.1021/acs.joc.7b00483] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
In this work, (1,5-hexadiene)Ni(SIPr) (SIPr = 1,3-bis(2,6-diisopropylphenyl)imidazolidin-2-ylidene) is used in place of Ni(COD)2/SIPr·HBF4/KOtBu (COD = 1,5-cyclooctadiene) as a more robust catalyst for regioselective reductive coupling of ynoates and aldehydes with triethylsilane. The catalytic reaction of ethyl 3-(trimethylsilyl)propiolate and methyl 4-formylbenzoate shows first-order dependence on aldehyde and catalyst concentrations, inverse first-order dependence on [ynoate], and no dependence on [silane]. The kinetics data, coupled with deuterium-labeling experiments, support a mechanism involving dissociation of the ynoate from a catalytically dormant nickelacyclopentadiene intermediate prior to turnover-limiting formation of a catalytically active nickeladihydrofuran.
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Affiliation(s)
- Sanjeewa K Rodrigo
- Department of Chemistry, University of Cincinnati , Cincinnati, Ohio 45221-0172, United States
| | - Hairong Guan
- Department of Chemistry, University of Cincinnati , Cincinnati, Ohio 45221-0172, United States
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26
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Kerchner HA, Montgomery J. Synthesis of Secondary and Tertiary Alkylboranes via Formal Hydroboration of Terminal and 1,1-Disubstituted Alkenes. Org Lett 2016; 18:5760-5763. [PMID: 27786484 PMCID: PMC5189986 DOI: 10.1021/acs.orglett.6b03090] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Copper-catalyzed functionalization of terminal or 1,1-disubstituted alkenes with bis(pinacolato)diboron and methanol provides formal hydroboration products with exceptional regiocontrol favoring the branched isomer. Pairing this procedure with photocatalytic cross-couplings using iridium and nickel cocatalysis provides an effective, highly regioselective procedure for the hydroarylation of terminal alkenes.
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Affiliation(s)
- Hilary A. Kerchner
- Department of Chemistry, University of Michigan, 930 N. University Ave., Ann Arbor, MI, 48109-1055, USA
| | - John Montgomery
- Department of Chemistry, University of Michigan, 930 N. University Ave., Ann Arbor, MI, 48109-1055, USA
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27
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Tjutrins J, Dhawan R, Lu Y, Arndtsen BA. Mechanism of the Palladium-Catalyzed Synthesis of Münchnones: The Role of Ligands in N-Acyl Iminium Salt Carbonylation. Chemistry 2016; 22:15945-15954. [PMID: 27643406 DOI: 10.1002/chem.201603400] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2016] [Indexed: 11/06/2022]
Abstract
The palladium-catalyzed carbonylative coupling of imines, acid chlorides, and dipolarophiles can provide efficient routes to prepare nitrogen-containing heterocycles. One challenge in developing this reaction, and in the creation of more active catalyst systems, is the lack of data on how this complex transformation proceeds. To address this, we report here the results of our mechanistic studies on this system, and in particular the formation of mesoionic münchnones. This includes the synthesis of key catalytic intermediates, model reactions, and kinetic studies that support the role of these compounds in catalysis. Together, these studies provide a clear picture of the impact of catalyst structure, ligands, and palladium nanoparticles on facilitating the carbonylation of in situ generated iminium salts, and suggest an avenue for the creation of more active catalyst systems.
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Affiliation(s)
- Jevgenijs Tjutrins
- Department of Chemistry, McGill University, 801 Sherbrooke Street West, Montreal, QC, H3A 0B8, Canada
| | - Rajiv Dhawan
- Department of Chemistry, McGill University, 801 Sherbrooke Street West, Montreal, QC, H3A 0B8, Canada
| | - Yingdong Lu
- Department of Chemistry, McGill University, 801 Sherbrooke Street West, Montreal, QC, H3A 0B8, Canada
| | - Bruce A Arndtsen
- Department of Chemistry, McGill University, 801 Sherbrooke Street West, Montreal, QC, H3A 0B8, Canada.
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28
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Kotipalli T, Kavala V, Konala A, Janreddy D, Kuo CW, Yao CF. Reagent/Substituent Switching Approach for the Synthesis of Substituted 1,3,4-Oxadiazole/1,3,4-Oxadiazoline and 1,2,4-Triazole Derivatives from N-Substituted Hydrazides. Adv Synth Catal 2016. [DOI: 10.1002/adsc.201600274] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Trimurtulu Kotipalli
- Department of Chemistry; National Taiwan Normal University; 88, Sec. 4, Tingchow Road Taipei Taiwan 116, R.O.C
| | - Veerababurao Kavala
- Department of Chemistry; National Taiwan Normal University; 88, Sec. 4, Tingchow Road Taipei Taiwan 116, R.O.C
| | - Ashok Konala
- Department of Chemistry; National Taiwan Normal University; 88, Sec. 4, Tingchow Road Taipei Taiwan 116, R.O.C
| | - Donala Janreddy
- Department of Chemistry; National Taiwan Normal University; 88, Sec. 4, Tingchow Road Taipei Taiwan 116, R.O.C
| | - Chu-Wei Kuo
- Department of Chemistry; National Taiwan Normal University; 88, Sec. 4, Tingchow Road Taipei Taiwan 116, R.O.C
| | - Ching-Fa Yao
- Department of Chemistry; National Taiwan Normal University; 88, Sec. 4, Tingchow Road Taipei Taiwan 116, R.O.C
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29
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Zhang P, Le C“C, MacMillan DWC. Silyl Radical Activation of Alkyl Halides in Metallaphotoredox Catalysis: A Unique Pathway for Cross-Electrophile Coupling. J Am Chem Soc 2016; 138:8084-7. [PMID: 27263662 PMCID: PMC5103281 DOI: 10.1021/jacs.6b04818] [Citation(s) in RCA: 404] [Impact Index Per Article: 50.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
A strategy for cross-electrophile coupling has been developed via the merger of photoredox and transition metal catalysis. In this report, we demonstrate the use of commercially available tris(trimethylsilyl)silane with metallaphotoredox catalysis to efficiently couple alkyl bromides with aryl or heteroaryl bromides in excellent yields. We hypothesize that a photocatalytically generated silyl radical species can perform halogen-atom abstraction to activate alkyl halides as nucleophilic cross-coupling partners. This protocol allows the use of mild yet robust conditions to construct Csp(3)-Csp(2) bonds generically via a unique cross-coupling pathway.
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Affiliation(s)
- Patricia Zhang
- Merck Center for Catalysis at Princeton University, Princeton, New Jersey 08544, United States
| | - Chi “Chip” Le
- Merck Center for Catalysis at Princeton University, Princeton, New Jersey 08544, United States
| | - David W. C. MacMillan
- Merck Center for Catalysis at Princeton University, Princeton, New Jersey 08544, United States
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30
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Ahlin JSE, Cramer N. Chiral N-Heterocyclic Carbene Ligand Enabled Nickel(0)-Catalyzed Enantioselective Three-Component Couplings as Direct Access to Silylated Indanols. Org Lett 2016; 18:3242-5. [DOI: 10.1021/acs.orglett.6b01492] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Joachim S. E. Ahlin
- Laboratory
of Asymmetric
Catalysis and Synthesis, Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne, EPFL SB ISIC LCSA, BCH 4305, CH-1015 Lausanne, Switzerland
| | - Nicolai Cramer
- Laboratory
of Asymmetric
Catalysis and Synthesis, Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne, EPFL SB ISIC LCSA, BCH 4305, CH-1015 Lausanne, Switzerland
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31
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Liu T, Bi S. Impact of Ligand and Silane on the Regioselectivity in Catalytic Aldehyde–Alkyne Reductive Couplings: A Theoretical Study. Organometallics 2016. [DOI: 10.1021/acs.organomet.6b00127] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Tao Liu
- Department of Chemistry and Chemical Engineering, Jining University, Qufu 273155, Shandong
Province, People’s Republic of China
| | - Siwei Bi
- School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, Shandong Province, People’s Republic of China
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32
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Lu XY, Liu JH, Lu X, Zhang ZQ, Gong TJ, Xiao B, Fu Y. 1,1-Disubstituted olefin synthesis via Ni-catalyzed Markovnikov hydroalkylation of alkynes with alkyl halides. Chem Commun (Camb) 2016; 52:5324-7. [PMID: 27001942 DOI: 10.1039/c6cc00176a] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A Ni-catalyzed Markovnikov hydroalkylation of alkynes with alkyl halides is described. The reaction proceeds smoothly without the use of sensitive organometallic reagents and shows good functional-group compatibility, enabling the efficient synthesis of a variety of 1,1-disubstituted olefins. It also provides a straightforward approach for the modification of complex organic molecules.
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Affiliation(s)
- Xiao-Yu Lu
- Hefei National Laboratory for Physical Sciences at the Microscale, iChEM, CAS Key Laboratory of Urban Pollutant Conversion, Anhui Province Key Laboratory of Biomass Clean Energy, University of Science and Technology of China, Hefei 230026, China.
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33
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Trost BM, Koester DC, Sharif EU. Ruthenium-Catalyzed Multicomponent Reactions: Access to α-Silyl-β-Hydroxy Vinylsilanes, Stereodefined 1,3-Dienes, and Cyclohexenes. Chemistry 2016; 22:2634-8. [PMID: 26669265 DOI: 10.1002/chem.201504981] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2015] [Indexed: 11/07/2022]
Abstract
The synthesis of densly functionized α-silyl-β-hydroxyl vinylsilanes via ruthenium-catalyzed multicomponent reaction (MCR) is reported herein. Exceptionally high regio- and diastereoselectivity was achieved by employing an unprecedented hydrosilylation of bifunctional silyl-propargyl boronates. The simple protocol, mild reaction conditions, and unique tolerability of this method make it a valuable tool for the synthesis of highly elaborated building blocks. The one-pot synthesis of stereodefined olefins, the generation of a valuable cyclohexene building block through a four-component MCR, and further functionalization in an abundance of diastereoselective reactions is disclosed herein.
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Affiliation(s)
- Barry M Trost
- Department of Chemistry, Stanford University, Stanford, California, 94305-5080, USA.
| | - Dennis C Koester
- Department of Chemistry, Stanford University, Stanford, California, 94305-5080, USA
| | - Ehesan U Sharif
- Department of Chemistry, Stanford University, Stanford, California, 94305-5080, USA
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34
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Hayashi Y, Hoshimoto Y, Kumar R, Ohashi M, Ogoshi S. Nickel(0)-catalyzed intramolecular reductive coupling of alkenes and aldehydes or ketones with hydrosilanes. Chem Commun (Camb) 2016; 52:6237-40. [DOI: 10.1039/c6cc01915c] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
A nickel(0)-catalyzed reductive coupling of aldehydes and simple alkenes with hydrosilanes has been developed.
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Affiliation(s)
- Yukari Hayashi
- Department of Applied Chemistry
- Faculty of Engineering
- Osaka University
- Suita
- Japan
| | - Yoichi Hoshimoto
- Department of Applied Chemistry
- Faculty of Engineering
- Osaka University
- Suita
- Japan
| | - Ravindra Kumar
- Department of Applied Chemistry
- Faculty of Engineering
- Osaka University
- Suita
- Japan
| | - Masato Ohashi
- Department of Applied Chemistry
- Faculty of Engineering
- Osaka University
- Suita
- Japan
| | - Sensuke Ogoshi
- Department of Applied Chemistry
- Faculty of Engineering
- Osaka University
- Suita
- Japan
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35
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Wang L, Sun H, Li X. Imine Nitrogen Bridged Binuclear Nickel Complexes via N–H Bond Activation: Synthesis, Characterization, Unexpected C,N-Coupling Reaction, and Their Catalytic Application in Hydrosilylation of Aldehydes. Organometallics 2015. [DOI: 10.1021/acs.organomet.5b00734] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Lin Wang
- School of Chemistry and Chemical
Engineering, Key Laboratory of Special Functional Aggregated Materials, Ministry of Education, Shandong University, Shanda Nanlu 27, 250199 Jinan, People’s Republic of China
| | - Hongjian Sun
- School of Chemistry and Chemical
Engineering, Key Laboratory of Special Functional Aggregated Materials, Ministry of Education, Shandong University, Shanda Nanlu 27, 250199 Jinan, People’s Republic of China
| | - Xiaoyan Li
- School of Chemistry and Chemical
Engineering, Key Laboratory of Special Functional Aggregated Materials, Ministry of Education, Shandong University, Shanda Nanlu 27, 250199 Jinan, People’s Republic of China
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36
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Miller ZD, Dorel R, Montgomery J. Regiodivergent and Stereoselective Hydrosilylation of 1,3-Disubstituted Allenes. Angew Chem Int Ed Engl 2015; 54:9088-91. [DOI: 10.1002/anie.201503521] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2015] [Indexed: 11/07/2022]
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37
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Hoshimoto Y, Ohashi M, Ogoshi S. Catalytic Transformation of Aldehydes with Nickel Complexes through η(2) Coordination and Oxidative Cyclization. Acc Chem Res 2015; 48:1746-55. [PMID: 25955708 DOI: 10.1021/acs.accounts.5b00061] [Citation(s) in RCA: 79] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Chemists no longer doubt the importance of a methodology that could activate and utilize aldehydes in organic syntheses since many products prepared from them support our daily life. Tremendous effort has been devoted to the development of these methods using main-group elements and transition metals. Thus, many organic chemists have used an activator-(aldehyde oxygen) interaction, namely, η(1) coordination, whereby a Lewis or Brønsted acid activates an aldehyde. In the field of coordination chemistry, η(2) coordination of aldehydes to transition metals by coordination of a carbon-oxygen double bond has been well-studied; this activation mode, however, is rarely found in transition-metal catalysis. In view of the distinctive reactivity of an η(2)-aldehyde complex, unprecedented reactions via this intermediate are a distinct possibility. In this Account, we summarize our recent results dealing with nickel(0)-catalyzed transformations of aldehydes via η(2)-aldehyde nickel and oxanickelacycle intermediates. The combination of electron-rich nickel(0) and strong electron-donating N-heterocyclic carbene (NHC) ligands adequately form η(2)-aldehyde complexes in which the aldehyde is highly activated by back-bonding. With Ni(0)/NHC catalysts, processes involving intramolecular hydroacylation of alkenes and homo/cross-dimerization of aldehydes (the Tishchenko reaction) have been developed, and both proceed via the simultaneous η(2) coordination of aldehydes and other π components (alkenes or aldehydes). The results of the mechanistic studies are consistent with a reaction pathway that proceeds via an oxanickelacycle intermediate generated by the oxidative cyclization with a nickel(0) complex. In addition, we have used the η(2)-aldehyde nickel complex as an effective activator for an organosilane in order to generate a silicate reactant. These reactions show 100% atom efficiency, generate no wastes, and are conducted under mild conditions.
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Affiliation(s)
- Yoichi Hoshimoto
- Department of Applied Chemistry, Faculty of Engineering, Osaka University, Suita, Osaka 565-0871, Japan
- Frontier Research Base for Global Young Researchers, Graduate School of Engineering, Osaka University, Suita, Osaka 565-0871, Japan
| | - Masato Ohashi
- Department of Applied Chemistry, Faculty of Engineering, Osaka University, Suita, Osaka 565-0871, Japan
| | - Sensuke Ogoshi
- Department of Applied Chemistry, Faculty of Engineering, Osaka University, Suita, Osaka 565-0871, Japan
- ACT-C, Japan Science and Technology Agency (JST), Suita, Osaka 565-0871, Japan
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38
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Jackson EP, Malik HA, Sormunen GJ, Baxter RD, Liu P, Wang H, Shareef AR, Montgomery J. Mechanistic Basis for Regioselection and Regiodivergence in Nickel-Catalyzed Reductive Couplings. Acc Chem Res 2015; 48:1736-45. [PMID: 25965694 DOI: 10.1021/acs.accounts.5b00096] [Citation(s) in RCA: 123] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
The control of regiochemistry is a considerable challenge in the development of a wide array of catalytic processes. Simple π-components such as alkenes, alkynes, 1,3-dienes, and allenes are among the many classes of substrates that present complexities in regioselective catalysis. Considering an internal alkyne as a representative example, when steric and electronic differences between the two substituents are minimal, differentiating among the two termini of the alkyne presents a great challenge. In cases where the differences between the alkyne substituents are substantial, overcoming those biases to access the regioisomer opposite that favored by substrate biases often presents an even greater challenge. Nickel-catalyzed reductive couplings of unsymmetrical π-components make up a group of reactions where control of regiochemistry presents a challenging but important objective. In the course of our studies of aldehyde-alkyne reductive couplings, complementary solutions to challenges in regiocontrol have been developed. Through careful selection of the ligand and reductant, as well as the more subtle reaction variables such as temperature and concentration, effective protocols have been established that allow highly selective access to either regiosiomer of the allylic alcohol products using a wide range of unsymmetrical alkynes. Computational studies and an evaluation of reaction kinetics have provided an understanding of the origin of the regioselectivity control. Throughout the various procedures described, the development of ligand-substrate interactions plays an essential role, and the overall kinetic descriptions were found to differ between protocols. Rational alteration of the rate-determining step plays a key role in the regiochemistry reversal strategy, and in one instance, the two possible regioisomeric outcomes in a single reaction were found to operate by different kinetic descriptions. With this mechanistic information in hand, the empirical factors that influence regiochemistry can be readily understood, and more importantly, the insights suggest simple and predictable experimental variables to achieving a desired reaction outcome. These studies thus present a detailed picture of the influences that control regioselectivity in a specific catalytic reaction, but they also delineate strategies for regiocontrol that may extend to numerous classes of reactions. The work provides an illustration of how insights into the kinetics and mechanism of a catalytic process can rationalize subtle empirical findings and suggest simple and rational modifications in procedure to access a desirable reaction outcome. Furthermore, these studies present an illustration of how important challenges in organic synthesis can be met by novel reactivity afforded by base metal catalysis. The use of nickel catalysis in this instance not only provides an inexpensive and sustainable method for catalysis but also enables unique reactivity patterns not accessible to other metals.
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Affiliation(s)
- Evan P. Jackson
- Department
of Chemistry, University of Michigan, 930 N. University Avenue, Ann Arbor, Michigan 48109-1055, United States
| | - Hasnain A. Malik
- Department
of Chemistry, University of Michigan, 930 N. University Avenue, Ann Arbor, Michigan 48109-1055, United States
| | - Grant J. Sormunen
- Department
of Chemistry, University of Michigan, 930 N. University Avenue, Ann Arbor, Michigan 48109-1055, United States
| | - Ryan D. Baxter
- Department
of Chemistry, University of Michigan, 930 N. University Avenue, Ann Arbor, Michigan 48109-1055, United States
| | - Peng Liu
- Department
of Chemistry and Biochemistry, University of California, Los Angeles, California 90095-1569, United States
| | - Hengbin Wang
- Department
of Chemistry, University of Michigan, 930 N. University Avenue, Ann Arbor, Michigan 48109-1055, United States
| | - Abdur-Rafay Shareef
- Department
of Chemistry, University of Michigan, 930 N. University Avenue, Ann Arbor, Michigan 48109-1055, United States
| | - John Montgomery
- Department
of Chemistry, University of Michigan, 930 N. University Avenue, Ann Arbor, Michigan 48109-1055, United States
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Miller ZD, Dorel R, Montgomery J. Regiodivergent and Stereoselective Hydrosilylation of 1,3-Disubstituted Allenes. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201503521] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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40
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García-Rubia A, Romero-Revilla JA, Mauleón P, Gómez Arrayás R, Carretero JC. Cu-Catalyzed Silylation of Alkynes: A Traceless 2-Pyridylsulfonyl Controller Allows Access to Either Regioisomer on Demand. J Am Chem Soc 2015; 137:6857-65. [DOI: 10.1021/jacs.5b02667] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
| | | | - Pablo Mauleón
- Universidad Autónoma de Madrid, Cantoblanco, 28049 Madrid, Spain
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Standley EA, Tasker SZ, Jensen KL, Jamison TF. Nickel Catalysis: Synergy between Method Development and Total Synthesis. Acc Chem Res 2015; 48:1503-14. [PMID: 25905431 DOI: 10.1021/acs.accounts.5b00064] [Citation(s) in RCA: 149] [Impact Index Per Article: 16.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Nickel(0) catalysts have proven to be powerful tools for multicomponent coupling reactions in our laboratories over the past 15 years. This interest was originally sparked by the ubiquity of allylic alcohol motifs in natural products, such as (-)-terpestacin, which we envisioned assembling by the coupling of two π components (alkyne and aldehyde) with concomitant reduction. Mechanistic investigations allowed us to elucidate several modes of controlling the regioselectivity and stereoselectivity in the oxidative cyclization, and these insights enabled us to leverage combinations of alkenes and phosphine ligands to direct regioselective outcomes. The initial success in developing the first intermolecular reductive alkyne-aldehyde coupling reaction launched a series of methodological investigations that rapidly expanded to include coupling reactions of alkynes with other electrophilic π components, such as imines and ketones, as well as electrophilic σ components, such as epoxides. Aziridines proved to be more challenging substrates for reductive coupling, but we were recently able to demonstrate that cross-coupling of aziridines and alkylzinc reagents is smoothly catalyzed by a zero-valent nickel/phenanthroline system. Moreover, the enantioselective alkyne-aldehyde coupling and the development of novel P-chiral ferrocenyl ligands enabled the total synthesis of (-)-terpestacin, amphidinolides T1 and T4, (-)-gloeosporone, and pumiliotoxins 209F and 251D. We subsequently determined that alkenes could be used in place of alkynes in several nickel-catalyzed reactions when a silyl triflate activating agent was added. We reason that such an additive functions largely to enhance the electrophilicity of the metal center by coordination to the electrophilic π component, such that less nucleophilic alkene π donors can undergo productive combination with nickel complexes. This activation manifold was further demonstrated to be effective for alkene-aldehyde couplings. In a related manner, electrophilic promoters were also successfully employed for allylic substitution reactions of allylic carbonates with simple alkenes and in the Mizoroki-Heck reaction of both benzyl and aryl electrophiles. In these instances, it is proposed that counterion exchange from a more strongly coordinating anion to the weakly or noncoordinating triflate counterion enables reaction at an electrophilic Ni(II) center rather than by coordination to one of the coupling components. Mechanistic insights also played an important role in the development of mixed N-heterocyclic carbene/phosphite ligand systems to overcome challenges in regioselective alkene-aldehyde coupling reactions. We hope that, taken together, the body of work summarized in this Account demonstrates the constructive interplay among total synthesis, methodological development, and mechanistic investigation that has driven our research program.
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Affiliation(s)
- Eric A. Standley
- Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
| | - Sarah Z. Tasker
- Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
| | - Kim L. Jensen
- Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
| | - Timothy F. Jamison
- Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
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Wang L, Sun H, Li X. Synthesis of Iron Hydrides by Selective C-F/C-H Bond Activation in Fluoroarylimines and Their Applications in Catalytic Reduction Reactions. Eur J Inorg Chem 2015. [DOI: 10.1002/ejic.201500313] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
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43
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Wang H, Negretti S, Knauff AR, Montgomery J. Exo-selective reductive macrocyclization of ynals. Org Lett 2015; 17:1493-6. [PMID: 25746060 DOI: 10.1021/acs.orglett.5b00381] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
A general protocol for the highly exo-selective macrocyclization of ynals using a nickel/N-heterocyclic carbene catalyst system has been developed. A series of 10- to 21-membered macrocycles bearing an exomethylene substituent was synthesized in good yields with excellent regioselectivity (exo/endo >95:5). Very high levels of long-range diastereocontrol can also be achieved for some classes of macrocycles. Complementary to previously reported endo-selective macrocyclizations, this method provides accesses to exoalkylidene macrocycles from simple ynals in high selectivity.
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Affiliation(s)
- Hengbin Wang
- Department of Chemistry, University of Michigan, 930 North University Avenue, Ann Arbor, Michigan 48109-1055, United States
| | - Solymar Negretti
- Department of Chemistry, University of Michigan, 930 North University Avenue, Ann Arbor, Michigan 48109-1055, United States
| | - Allison R Knauff
- Department of Chemistry, University of Michigan, 930 North University Avenue, Ann Arbor, Michigan 48109-1055, United States
| | - John Montgomery
- Department of Chemistry, University of Michigan, 930 North University Avenue, Ann Arbor, Michigan 48109-1055, United States
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Nie M, Fu W, Cao Z, Tang W. Enantioselective nickel-catalyzed alkylative alkyne–aldehyde cross-couplings. Org Chem Front 2015. [DOI: 10.1039/c5qo00148j] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An efficient asymmetric nickel-catalyzed alkylative alkyne–aldehyde cross-coupling is developed by employing BI-DIME as the P-chiral monophosphorus ligand, allowing rapid access to a series of chiral tetra-substituted olefinic allylic alcohols in high yields and good to excellent ees.
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Affiliation(s)
- Ming Nie
- State Key Laboratory of Bio-Organic and Natural Products Chemistry
- Shanghai Institute of Organic Chemistry
- Shanghai 200032
- P. R. China
| | - Wenzhen Fu
- State Key Laboratory of Bio-Organic and Natural Products Chemistry
- Shanghai Institute of Organic Chemistry
- Shanghai 200032
- P. R. China
| | - Ziping Cao
- State Key Laboratory of Bio-Organic and Natural Products Chemistry
- Shanghai Institute of Organic Chemistry
- Shanghai 200032
- P. R. China
| | - Wenjun Tang
- State Key Laboratory of Bio-Organic and Natural Products Chemistry
- Shanghai Institute of Organic Chemistry
- Shanghai 200032
- P. R. China
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