1
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Ghosh KK, RajanBabu TV. Ligand Effects in Carboxylic Ester- and Aldehyde-Assisted β-C-H Activation in Regiodivergent and Enantioselective Cycloisomerization-Hydroalkenylation and Cycloisomerization-Hydroarylation, and [2 + 2 + 2]-Cycloadditions of 1,6-Enynes. J Am Chem Soc 2024; 146:18753-18770. [PMID: 38935521 PMCID: PMC11415009 DOI: 10.1021/jacs.4c06796] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/29/2024]
Abstract
Herein, we report room temperature, atom-economic protocols for high regio- and enantioselective tandem cycloisomerization-hydroarylation and cycloisomerization-hydroalkenylation of 1,6-enynes leading to vicinal carba-functionalized pyrrolidines, tetrahydrofurans, and cyclopentanes. The latter steps in these processes involve carbonyl-coordination-assisted ortho-C-H activation of aromatic aldehydes and esters, and, a similar, yet rarely seen, β-C-H activation in the case of the acrylates. Synthetically useful enantioselective versions of such reactions are rare and are limited to the C2-H activation of indoles and pyrroles. A similar reaction is also observed with N-vinylphthalimide, which also has a carbonyl group suitable for C-H activation. A dibenzooxaphosphole ligand, (2S,2S',3S,3S')-MeO-BIBOP was uniquely identified as crucial to achieving the challenging regio- and enantioselectivity. This methodology gives access to substituted five-membered carbo- and heterocyclic compounds in good yields and excellent enantioselectivities under a low catalyst loading. A primary KIE of 3.5 is observed in an intermolecular competition experiment with methyl benzoate and d5-methyl benzoate, which indicates that the C-H cleavage is the turnover-limiting step of this process. Unlike the acrylates, which undergoes exclusive hydroalkenylation, a β, γ-unsaturated ester, methyl but-3-enoate, undergoes the highly enantioselective cycloisomerization-coupling sequence with a 1,6-enyne giving either a [2 + 2 + 2]-cycloaddition with (S, S)-BDPP or hydroalkenylation with (2S,2'S,3S,3'S)-MeO-BIBOP depending on the ligand employed. The (E)-configuration of the newly formed double bond at the terminal alkynyl carbon (of the starting enyne) in the hydroalkenylation product of β,γ-unsaturated ester suggests a more classical migratory insertion-β-hydride elimination route for the formation of this product.
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Affiliation(s)
- Kiron K Ghosh
- Department of Chemistry and Biochemistry, The Ohio State University, Columbus, Ohio 43210, United States
| | - T V RajanBabu
- Department of Chemistry and Biochemistry, The Ohio State University, Columbus, Ohio 43210, United States
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2
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Chen D, Song ZJ, Yan S, Li G, Wang JY, Zhang Y. Photoinduced radical tandem annulation of 1,7-diynes: an approach for divergent assembly of functionalized quinolin-2(1H)-ones. Front Chem 2024; 12:1371978. [PMID: 38595704 PMCID: PMC11002210 DOI: 10.3389/fchem.2024.1371978] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2024] [Accepted: 02/26/2024] [Indexed: 04/11/2024] Open
Abstract
The first photocatalytic trichloromethyl radical-triggered annulative reactions of amide-linked 1,7-diynes with polyhalomethanes were established for the flexible assembly of functionalized quinolin-2(1H)-ones with generally acceptable yields. With the installation of the aryl group (R1) into the alkynyl moiety, C-center radical-initiated Kharasch-type addition/nucleophilic substitution/elimination cascade to produce quinolin-2(1H)-ones-incorporating gem-dihaloalkene, whereas three examples of polyhalogenated quinolin-2(1H)-ones were afforded when amide-linked 1,7-diynes bearing two terminal alkyne units were subjected to BrCX3 by exploiting dry acetonitrile as a solvent.
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Affiliation(s)
- Daixiang Chen
- School of Pharmacy, Changzhou University, Changzhou, Jiangsu, China
| | - Zhi-Jie Song
- School of Pharmacy, Changzhou University, Changzhou, Jiangsu, China
| | - Shenghu Yan
- School of Pharmacy, Changzhou University, Changzhou, Jiangsu, China
| | - Guigen Li
- Department of Chemistry and Biochemistry, Texas Tech University, Lubbock, TX, United States
| | - Jia-Yin Wang
- School of Pharmacy, Changzhou University, Changzhou, Jiangsu, China
| | - Yue Zhang
- School of Pharmacy, Changzhou University, Changzhou, Jiangsu, China
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3
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Yang Z, Yu Z, He Y, Feng W, Zhang Y, Wang J, Kong X, Yang CH. Rh-Catalyzed Borylative Cyclization of Acrylate-Containing 1,6-Enynes. Org Lett 2023. [PMID: 37486621 DOI: 10.1021/acs.orglett.3c02154] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/25/2023]
Abstract
A Rh-catalyzed regioselective, stereoselective carbocyclization/borylation of acrylate-containing 1,6-enynes was described, which offers a general and practical method for constructing versatile and densely functionalized pyrrolidines with the (Z) geometry or the uncommon (E) geometry at the double bond with different substituents of the alkyne, with sterically hindered and conjugative aryl groups favoring the latter, featuring a tetrasubstituted vinyl boronate, containing an all-carbon quaternary stereocenter.
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Affiliation(s)
- Zhantao Yang
- Henan Key Laboratory of New Optoelectronic Functional Materials, College of Chemistry and Chemical Engineering, Anyang Normal University, 436 Xian'ge Road, Anyang 455000, People's Republic of China
| | - Zhiqiang Yu
- Henan Key Laboratory of New Optoelectronic Functional Materials, College of Chemistry and Chemical Engineering, Anyang Normal University, 436 Xian'ge Road, Anyang 455000, People's Republic of China
| | - Yulin He
- Henan Key Laboratory of New Optoelectronic Functional Materials, College of Chemistry and Chemical Engineering, Anyang Normal University, 436 Xian'ge Road, Anyang 455000, People's Republic of China
| | - Wei Feng
- Henan Key Laboratory of New Optoelectronic Functional Materials, College of Chemistry and Chemical Engineering, Anyang Normal University, 436 Xian'ge Road, Anyang 455000, People's Republic of China
| | - Yinchao Zhang
- Henan Key Laboratory of New Optoelectronic Functional Materials, College of Chemistry and Chemical Engineering, Anyang Normal University, 436 Xian'ge Road, Anyang 455000, People's Republic of China
| | - Junjie Wang
- Henan Key Laboratory of New Optoelectronic Functional Materials, College of Chemistry and Chemical Engineering, Anyang Normal University, 436 Xian'ge Road, Anyang 455000, People's Republic of China
| | - Xiangtao Kong
- Henan Key Laboratory of New Optoelectronic Functional Materials, College of Chemistry and Chemical Engineering, Anyang Normal University, 436 Xian'ge Road, Anyang 455000, People's Republic of China
| | - Chun-Hua Yang
- Henan Key Laboratory of New Optoelectronic Functional Materials, College of Chemistry and Chemical Engineering, Anyang Normal University, 436 Xian'ge Road, Anyang 455000, People's Republic of China
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4
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Zhang Y, Xu W, Gao T, Guo M, Yang CH, Xie H, Kong X, Yang Z, Chang J. Pd-Catalyzed Borylsilylative Cyclization of 1,6-Allenynes. Org Lett 2022; 24:7021-7025. [PMID: 36129417 DOI: 10.1021/acs.orglett.2c02878] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A Pd-catalyzed borylsilylative cyclization of 1,6-allenynes with PhMe2SiBpin was developed. This method provides a practical and general method to afford the carbocycles and heterocycles bearing silyl and boryl groups with excellent regioselectivities and stereoselectivities in high to excellent yields.
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Affiliation(s)
- Yinchao Zhang
- NMPA Key Laboratory for Research and Evaluation of Innovative Drug, Henan Key Laboratory of Organic Functional Molecule and Drug Innovation, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, P. R. China
| | - Wenxiu Xu
- Henan Key Laboratory of New Optoelectronic Functional Materials, College of Chemistry and Chemical Engineering, Anyang Normal University, 436 Xian'ge Road, Anyang 455000, People's Republic of China
| | - Tongtong Gao
- Henan Key Laboratory of New Optoelectronic Functional Materials, College of Chemistry and Chemical Engineering, Anyang Normal University, 436 Xian'ge Road, Anyang 455000, People's Republic of China
| | - Mengjuan Guo
- Henan Key Laboratory of New Optoelectronic Functional Materials, College of Chemistry and Chemical Engineering, Anyang Normal University, 436 Xian'ge Road, Anyang 455000, People's Republic of China
| | - Chun-Hua Yang
- Henan Key Laboratory of New Optoelectronic Functional Materials, College of Chemistry and Chemical Engineering, Anyang Normal University, 436 Xian'ge Road, Anyang 455000, People's Republic of China
| | - Hua Xie
- State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian 116023, China
| | - Xiangtao Kong
- Henan Key Laboratory of New Optoelectronic Functional Materials, College of Chemistry and Chemical Engineering, Anyang Normal University, 436 Xian'ge Road, Anyang 455000, People's Republic of China
| | - Zhantao Yang
- Henan Key Laboratory of New Optoelectronic Functional Materials, College of Chemistry and Chemical Engineering, Anyang Normal University, 436 Xian'ge Road, Anyang 455000, People's Republic of China
| | - Junbiao Chang
- NMPA Key Laboratory for Research and Evaluation of Innovative Drug, Henan Key Laboratory of Organic Functional Molecule and Drug Innovation, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, P. R. China
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Altarejos J, Valero A, Manzano R, Carreras J. Synthesis of Tri‐ and Tetrasubstituted Alkenyl Boronates from Alkynes. European J Org Chem 2022. [DOI: 10.1002/ejoc.202200521] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Julia Altarejos
- Universidad de Alcalá Facultad de Ciencias: Universidad de Alcala Facultad de Ciencias Química Orgánica y Química Inorgánica SPAIN
| | - Antonio Valero
- Universidad de Alcalá Facultad de Ciencias: Universidad de Alcala Facultad de Ciencias Química Orgánica y Química Inorgánica SPAIN
| | - Rubén Manzano
- Universidad de Alcalá Facultad de Ciencias: Universidad de Alcala Facultad de Ciencias Química Orgánica y Química Inorgánica SPAIN
| | - Javier Carreras
- Universidad de Alcalá Facultad de Ciencias: Universidad de Alcala Facultad de Ciencias Química Orgánica y Química Inorgánica Carretera Madrid-Barcelona km 33,6, Campus Universitario.Facultad de Farmacia 28805 Alcalá de Henares SPAIN
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Häring M, Kerpen C, Ribbeck T, Hennig PT, Bertermann R, Ignat'ev NV, Finze M. Dismutation of Tricyanoboryllead Compounds: The Homoleptic Tetrakis(tricyanoboryl)plumbate Tetraanion. Angew Chem Int Ed Engl 2022; 61:e202202882. [PMID: 35266266 PMCID: PMC9322310 DOI: 10.1002/anie.202202882] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2022] [Indexed: 11/29/2022]
Abstract
A series of unprecedently air-stable (tricyanoboryl)plumbate anions was obtained by the reaction of the boron-centered nucleophile B(CN)3 2- with triorganyllead halides. Salts of the anions [R3 PbB(CN)3 ]- (R=Ph, Et) were isolated and found to be stable in air at room temperature. In the case of Me3 PbHal (Hal=Cl, Br), a mixture of the anions [Me4-n Pb{B(CN)3 }n ]n- (n=1, 2) was obtained. The [Et3 PbB(CN)3 ]- ion undergoes stepwise dismutation in aqueous solution to yield the plumbate anions [Et4-n Pb{B(CN)3 }n ]n- (n=1-4) and PbEt4 as by-product. The reaction rate increases with decreasing pH value of the aqueous solution or by bubbling O2 through the reaction mixture. Adjustment of the conditions allowed the selective formation and isolation of salts of all anions of the series [Et4-n Pb{B(CN)3 }n ]n- (n=2-4) including the homoleptic tetraanion [Pb{B(CN)3 }4 ]4- .
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Affiliation(s)
- Mathias Häring
- Institut für nachhaltige Chemie & Katalyse mit Bor (ICB)Institut für Anorganische ChemieJulius-Maximilians-Universität WürzburgAm Hubland97074WürzburgGermany
| | - Christoph Kerpen
- Institut für nachhaltige Chemie & Katalyse mit Bor (ICB)Institut für Anorganische ChemieJulius-Maximilians-Universität WürzburgAm Hubland97074WürzburgGermany
| | - Tatjana Ribbeck
- Institut für nachhaltige Chemie & Katalyse mit Bor (ICB)Institut für Anorganische ChemieJulius-Maximilians-Universität WürzburgAm Hubland97074WürzburgGermany
| | - Philipp T. Hennig
- Institut für nachhaltige Chemie & Katalyse mit Bor (ICB)Institut für Anorganische ChemieJulius-Maximilians-Universität WürzburgAm Hubland97074WürzburgGermany
| | - Rüdiger Bertermann
- Institut für nachhaltige Chemie & Katalyse mit Bor (ICB)Institut für Anorganische ChemieJulius-Maximilians-Universität WürzburgAm Hubland97074WürzburgGermany
| | - Nikolai V. Ignat'ev
- Institut für nachhaltige Chemie & Katalyse mit Bor (ICB)Institut für Anorganische ChemieJulius-Maximilians-Universität WürzburgAm Hubland97074WürzburgGermany
- Consultant, Merck KGaA64293DarmstadtGermany
| | - Maik Finze
- Institut für nachhaltige Chemie & Katalyse mit Bor (ICB)Institut für Anorganische ChemieJulius-Maximilians-Universität WürzburgAm Hubland97074WürzburgGermany
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7
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Häring M, Kerpen C, Ribbeck T, Hennig PT, Bertermann R, Ignat'ev NV, Finze M. Dismutation von Tricyanoborblei‐Verbindungen: Das homoleptische Tetrakis(tricyanoboryl)plumbat‐Tetraanion. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202202882] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Mathias Häring
- Institut für nachhaltige Chemie & Katalyse mit Bor (ICB) Institut für Anorganische Chemie Julius-Maximilians-Universität Würzburg Am Hubland 97074 Würzburg Deutschland
| | - Christoph Kerpen
- Institut für nachhaltige Chemie & Katalyse mit Bor (ICB) Institut für Anorganische Chemie Julius-Maximilians-Universität Würzburg Am Hubland 97074 Würzburg Deutschland
| | - Tatjana Ribbeck
- Institut für nachhaltige Chemie & Katalyse mit Bor (ICB) Institut für Anorganische Chemie Julius-Maximilians-Universität Würzburg Am Hubland 97074 Würzburg Deutschland
| | - Philipp T. Hennig
- Institut für nachhaltige Chemie & Katalyse mit Bor (ICB) Institut für Anorganische Chemie Julius-Maximilians-Universität Würzburg Am Hubland 97074 Würzburg Deutschland
| | - Rüdiger Bertermann
- Institut für nachhaltige Chemie & Katalyse mit Bor (ICB) Institut für Anorganische Chemie Julius-Maximilians-Universität Würzburg Am Hubland 97074 Würzburg Deutschland
| | - Nikolai V. Ignat'ev
- Institut für nachhaltige Chemie & Katalyse mit Bor (ICB) Institut für Anorganische Chemie Julius-Maximilians-Universität Würzburg Am Hubland 97074 Würzburg Deutschland
- Consultant, Merck KGaA 64293 Darmstadt Deutschland
| | - Maik Finze
- Institut für nachhaltige Chemie & Katalyse mit Bor (ICB) Institut für Anorganische Chemie Julius-Maximilians-Universität Würzburg Am Hubland 97074 Würzburg Deutschland
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8
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Grygorenko OO, Moskvina VS, Kleban I, Hryshchyk OV. Synthesis of saturated and partially saturated heterocyclic boronic derivatives. Tetrahedron 2022. [DOI: 10.1016/j.tet.2021.132605] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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9
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Yang CH, Sun X, Niu C, Zhang Z, Liu M, Zheng F, Jiang L, Kong X, Yang Z. Borylative Cyclization of 1,6-Allenynes Driven by BCl 3. Org Lett 2021; 23:8050-8055. [PMID: 34612655 DOI: 10.1021/acs.orglett.1c03062] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A metal-free intramolecular borylative cyclization of 1,6-allenynes driven by BCl3 was developed. This method provides a general and practical strategy to construct valuable pyrrolidines containing all-carbon quaternary centers or 3,5-dihydroazepine derivatives depending on the substituents of the allene, with conjugative and sterically hindered phenyl groups favoring the latter.
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Affiliation(s)
- Chun-Hua Yang
- Henan Key Laboratory of New Optoelectronic Functional Materials, College of Chemistry and Chemical Engineering, Anyang Normal University, 436 Xian'ge Road, Anyang 455000, People's Republic of China
| | - Xiangkun Sun
- Henan Key Laboratory of New Optoelectronic Functional Materials, College of Chemistry and Chemical Engineering, Anyang Normal University, 436 Xian'ge Road, Anyang 455000, People's Republic of China
| | - Congcong Niu
- Henan Key Laboratory of New Optoelectronic Functional Materials, College of Chemistry and Chemical Engineering, Anyang Normal University, 436 Xian'ge Road, Anyang 455000, People's Republic of China
| | - Zhiwei Zhang
- Henan Key Laboratory of New Optoelectronic Functional Materials, College of Chemistry and Chemical Engineering, Anyang Normal University, 436 Xian'ge Road, Anyang 455000, People's Republic of China
| | - Mingzhu Liu
- Henan Key Laboratory of New Optoelectronic Functional Materials, College of Chemistry and Chemical Engineering, Anyang Normal University, 436 Xian'ge Road, Anyang 455000, People's Republic of China
| | - Fangjie Zheng
- Henan Key Laboratory of New Optoelectronic Functional Materials, College of Chemistry and Chemical Engineering, Anyang Normal University, 436 Xian'ge Road, Anyang 455000, People's Republic of China
| | - Ling Jiang
- State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian 116023, People's Republic of China
| | - Xiangtao Kong
- Henan Key Laboratory of New Optoelectronic Functional Materials, College of Chemistry and Chemical Engineering, Anyang Normal University, 436 Xian'ge Road, Anyang 455000, People's Republic of China
| | - Zhantao Yang
- Henan Key Laboratory of New Optoelectronic Functional Materials, College of Chemistry and Chemical Engineering, Anyang Normal University, 436 Xian'ge Road, Anyang 455000, People's Republic of China
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10
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Wang L, Xu T, Rao Q, Zhang TS, Hao WJ, Tu SJ, Jiang B. Photocatalytic Biheterocyclization of 1,7-Diynes for Accessing Skeletally Diverse Tricyclic 2-Pyranones. Org Lett 2021; 23:7845-7850. [PMID: 34581592 DOI: 10.1021/acs.orglett.1c02865] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
A new and green route to skeletally diverse oxo-heterocyclic architectures such as pyrano[3,4-c]chromen-2-ones and pyrano[3,4-c]quinolin-2-ones is reported via an unprecedented photocatalytic Kharasch-type cyclization/1,5-(SN″)-substitution/elimination/6π-electrocyclization/double nucleophilic substitution cascade starting from easily available heteroatom-linked 1,7-diynes and low-cost CBrCl3. During this reaction process, the full scission of carbon-halogen bonds of BrCCl3 was realized to directly build two new rings, including a lactone scaffold, using H2O as the oxygen source of the ester group.
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Affiliation(s)
- Lu Wang
- School of Chemistry & Materials Science, Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials, Jiangsu Normal University, Xuzhou 221116, P. R. China
| | - Ting Xu
- School of Chemistry & Materials Science, Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials, Jiangsu Normal University, Xuzhou 221116, P. R. China
| | - Qian Rao
- School of Chemistry & Materials Science, Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials, Jiangsu Normal University, Xuzhou 221116, P. R. China
| | - Tian-Shu Zhang
- School of Materials and Chemical Engineering, Xuzhou University of Technology, Xuzhou 221018, P. R. China
| | - Wen-Juan Hao
- School of Chemistry & Materials Science, Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials, Jiangsu Normal University, Xuzhou 221116, P. R. China
| | - Shu-Jiang Tu
- School of Chemistry & Materials Science, Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials, Jiangsu Normal University, Xuzhou 221116, P. R. China
| | - Bo Jiang
- School of Chemistry & Materials Science, Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials, Jiangsu Normal University, Xuzhou 221116, P. R. China
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11
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Herbort JH, Lalisse RF, Hadad CM, RajanBabu TV. Cationic Co(I) Catalysts for Regiodivergent Hydroalkenylation of 1,6-Enynes. An Uncommon cis-β-C-H Activation Leads to Z-Selective Coupling of Acrylates. ACS Catal 2021; 11:9605-9617. [PMID: 34745711 DOI: 10.1021/acscatal.1c02530] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Two intermolecular hydroalkenylation reactions of 1,6-enynes are presented which yield substituted 5-membered carbo- and -heterocycles. This reactivity is enabled by a cationic bis-diphenylphosphinopropane (DPPP)CoI species which forms a cobaltacyclopentene intermediate by oxidative cyclization of the enyne. This key species interacts with alkenes in distinct fashion, depending on the identity of the coupling partner to give regiodivergent products. Simple alkenes undergo insertion reactions to furnish 1,3-dienes whereby one of the alkenes is tetrasubstituted. When acrylates are employed as coupling partners, the site of intermolecular C-C formation shifts from the alkyne to the alkene motif of the enyne, yielding Z-substituted-acrylate derivatives. Computational studies provide support for our experimental observations and show that the turnover-limiting steps in both reactions are the interactions of the alkenes with the cobaltacyclopentene intermediate via either a 1,2-insertion in the case of ethylene, or an unexpected β-C-H activation in the case of most acrylates. Thus, the H syn to the ester is activated through the coordination of the acrylate carbonyl to the cobaltacycle intermediate, which explains the uncommon Z-selectivity and regiodivergence. Variable time normalization analysis (VTNA) of the kinetic data reveals a dependance upon the concentration of cobalt, acrylate, and activator. A KIE of 2.1 was observed with methyl methacrylate in separate flask experiments, indicating that C-H cleavage is the turnover-limiting step in the catalytic cycle. Lastly, a Hammett study of aryl-substituted enynes yields a ρ value of -0.4, indicating that more electron-rich substituents accelerate the rate of the reaction.
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Affiliation(s)
- James H. Herbort
- Department of Chemistry and Biochemistry, The Ohio State University, 100 West 18th Avenue, Columbus, Ohio 43210, United States
| | - Remy F. Lalisse
- Department of Chemistry and Biochemistry, The Ohio State University, 100 West 18th Avenue, Columbus, Ohio 43210, United States
| | - Christopher M. Hadad
- Department of Chemistry and Biochemistry, The Ohio State University, 100 West 18th Avenue, Columbus, Ohio 43210, United States
| | - T. V. RajanBabu
- Department of Chemistry and Biochemistry, The Ohio State University, 100 West 18th Avenue, Columbus, Ohio 43210, United States
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12
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Moberg C. Silylboranes as Powerful Tools in Organic Synthesis: Stereo- and Regioselective Reactions with 1,n-Enynes. SYNTHESIS-STUTTGART 2020. [DOI: 10.1055/s-0040-1707247] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
Bismetalated alkenes, accessible by element–element addition to alkynes, are valuable building blocks in organic synthesis, providing wide opportunities for divergent synthesis. Silaboration of alkynes with a pendant olefinic group, catalyzed by group 10 metal complexes, and subsequent transformation of the silicon and boron functional groups give access to densely functionalized 1,3-dienes and 1,3,5-trienes with defined stereo- and regiochemistry, 1,2-dienes, and carbocyclic and heterocyclic products.1 Introduction2 Background3 Reactions with 1,3-Enynes4 Cyclization 1,6-Enynes5 Cyclization 1,7-Enynes6 Cyclization of 1,n-Enynes (n > 7)7 Cyclization of Dienynes and Enediynes8 Cyclization of 1,6-Diynes9 Conclusions
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Affiliation(s)
- Christina Moberg
- Department of Chemistry, Organic Chemistry, KTH Royal Institute of Technology
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Affiliation(s)
- Lujia Mao
- Key Laboratory of Tropical Translational Medicine of Ministry of Education Hainan Key Laboratory for Research and Development of Tropical Herbs School of Pharmacy Hainan Medical University 571199 Haikou Hainan P. R. China
| | - Shubhankar Kumar Bose
- Centre for Nano and Material Sciences (CNMS) JAIN (Deemed-to-be University) Jain Global Campus Bangalore 562112 India
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14
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Huang Q, Hu MY, Zhu SF. Cobalt-Catalyzed Cyclization/Hydroboration of 1,6-Diynes with Pinacolborane. Org Lett 2019; 21:7883-7887. [DOI: 10.1021/acs.orglett.9b02873] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Qiang Huang
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Meng-Yang Hu
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Shou-Fei Zhu
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
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15
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Wu C, Liao J, Ge S. Cobalt‐Catalyzed Enantioselective Hydroboration/Cyclization of 1,7‐Enynes: Asymmetric Synthesis of Chiral Quinolinones Containing Quaternary Stereogenic Centers. Angew Chem Int Ed Engl 2019; 58:8882-8886. [DOI: 10.1002/anie.201903377] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2019] [Revised: 04/15/2019] [Indexed: 12/21/2022]
Affiliation(s)
- Caizhi Wu
- Department of ChemistryNational University of Singapore 3 Science Drive 3 Singapore 117543 Singapore
| | - Jiayu Liao
- Department of ChemistryNational University of Singapore 3 Science Drive 3 Singapore 117543 Singapore
| | - Shaozhong Ge
- Department of ChemistryNational University of Singapore 3 Science Drive 3 Singapore 117543 Singapore
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16
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Wu C, Liao J, Ge S. Cobalt‐Catalyzed Enantioselective Hydroboration/Cyclization of 1,7‐Enynes: Asymmetric Synthesis of Chiral Quinolinones Containing Quaternary Stereogenic Centers. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201903377] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Caizhi Wu
- Department of ChemistryNational University of Singapore 3 Science Drive 3 Singapore 117543 Singapore
| | - Jiayu Liao
- Department of ChemistryNational University of Singapore 3 Science Drive 3 Singapore 117543 Singapore
| | - Shaozhong Ge
- Department of ChemistryNational University of Singapore 3 Science Drive 3 Singapore 117543 Singapore
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17
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Zhang Q, Liang QJ, Xu JL, Xu YH, Loh TP. Palladium-catalyzed silaborative carbocyclizations of 1,6-diynes. Chem Commun (Camb) 2018; 54:2357-2360. [PMID: 29450429 DOI: 10.1039/c8cc00097b] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An addition/cyclization reaction of 1,6-diynes was developed for the synthesis of highly substituted 1,2-dialkylidenecycloalkanes. In this work, 1,6-diynes reacted with (dimethylphenylsilyl)pinacol-borane in the presence of a palladium catalyst to afford 1,2-dialkylidenecycloalkanes bearing silyl and boryl groups with a (Z,Z)-configuration in good to excellent yields. Moreover, the corresponding products could be easily converted into other synthetically useful compounds. This protocol provides an efficient and practical method of heteroelement-element linkage addition to the unsaturated 1,6-diynes.
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Affiliation(s)
- Qian Zhang
- Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, China.
| | - Qiu-Ju Liang
- Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, China.
| | - Jian-Lin Xu
- Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, China.
| | - Yun-He Xu
- Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, China.
| | - Teck-Peng Loh
- Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, China. and Institute of Advanced Synthesis, Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing Tech University, Nanjing, Jiangsu 210009, China and Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 637616, Singapore
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18
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Ogasawara M, Sasa H, Hu H, Amano Y, Nakajima H, Takenaga N, Nakajima K, Kita Y, Takahashi T, Dohi T. Atropisomeric Chiral Diiododienes (Z,Z)-2,3-Di(1-iodoalkylidene)tetralins: Synthesis, Enantiomeric Resolution, and Application in Asymmetric Catalysis. Org Lett 2017; 19:4102-4105. [DOI: 10.1021/acs.orglett.7b01876] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Affiliation(s)
- Masamichi Ogasawara
- Department
of Natural Science, Graduate School of Science and Technology, Tokushima University, Tokushima 770-8506, Japan
- Institute
for Catalysis and Graduate School of Life Science, Hokkaido University, Kita-ku, Sapporo 001-0021, Japan
| | - Hirotaka Sasa
- College
of Pharmaceutical Sciences, Ritsumeikan University, 1-1-1 Nojihigashi, Kusatsu, Shiga 525-8577, Japan
| | - Hao Hu
- Department
of Natural Science, Graduate School of Science and Technology, Tokushima University, Tokushima 770-8506, Japan
- Institute
for Catalysis and Graduate School of Life Science, Hokkaido University, Kita-ku, Sapporo 001-0021, Japan
| | - Yuta Amano
- College
of Pharmaceutical Sciences, Ritsumeikan University, 1-1-1 Nojihigashi, Kusatsu, Shiga 525-8577, Japan
| | - Hikaru Nakajima
- Institute
for Catalysis and Graduate School of Life Science, Hokkaido University, Kita-ku, Sapporo 001-0021, Japan
| | - Naoko Takenaga
- Faculty
of Pharmacy, Meijo University, 150 Yagotoyama,
Tempaku-ku, Nagoya, 468-8503, Japan
| | - Kiyohiko Nakajima
- Department
of Chemistry, Aichi University of Education, Igaya, Kariya, Aichi 448-8542, Japan
| | - Yasuyuki Kita
- Research
Organization of Science and Technology, Ritsumeikan University, 1-1-1 Nojihigashi, Kusatsu, Shiga 525-8577, Japan
| | - Tamotsu Takahashi
- Institute
for Catalysis and Graduate School of Life Science, Hokkaido University, Kita-ku, Sapporo 001-0021, Japan
| | - Toshifumi Dohi
- College
of Pharmaceutical Sciences, Ritsumeikan University, 1-1-1 Nojihigashi, Kusatsu, Shiga 525-8577, Japan
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19
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Gu Y, Martín R. Ni-Catalyzed Stannylation of Aryl Esters via C−O Bond Cleavage. Angew Chem Int Ed Engl 2017; 56:3187-3190. [DOI: 10.1002/anie.201611720] [Citation(s) in RCA: 57] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2016] [Indexed: 01/01/2023]
Affiliation(s)
- Yiting Gu
- Institute of Chemical Research of Catalonia (ICIQ); The Barcelona Institute of Science and Technology; Av. Països Catalans 16 43007 Tarragona Spain
| | - Rúben Martín
- Institute of Chemical Research of Catalonia (ICIQ); The Barcelona Institute of Science and Technology; Av. Països Catalans 16 43007 Tarragona Spain
- ICREA; Passeig Lluïs Companys 23 08010 Barcelona Spain
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20
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Gu Y, Martín R. Ni-Catalyzed Stannylation of Aryl Esters via C−O Bond Cleavage. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201611720] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Affiliation(s)
- Yiting Gu
- Institute of Chemical Research of Catalonia (ICIQ); The Barcelona Institute of Science and Technology; Av. Països Catalans 16 43007 Tarragona Spain
| | - Rúben Martín
- Institute of Chemical Research of Catalonia (ICIQ); The Barcelona Institute of Science and Technology; Av. Països Catalans 16 43007 Tarragona Spain
- ICREA; Passeig Lluïs Companys 23 08010 Barcelona Spain
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21
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Pyziak J, Walkowiak J, Marciniec B. Recent Advances in Boron-Substituted 1,3-Dienes Chemistry: Synthesis and Application. Chemistry 2016; 23:3502-3541. [DOI: 10.1002/chem.201602124] [Citation(s) in RCA: 44] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2016] [Indexed: 12/25/2022]
Affiliation(s)
- Jadwiga Pyziak
- Centre for Advanced Technologies; Adam Mickiewicz University in Poznań; Umultowska 89c 61-614 Poznań Poland
| | - Jędrzej Walkowiak
- Centre for Advanced Technologies; Adam Mickiewicz University in Poznań; Umultowska 89c 61-614 Poznań Poland
| | - Bogdan Marciniec
- Centre for Advanced Technologies; Adam Mickiewicz University in Poznań; Umultowska 89c 61-614 Poznań Poland
- Faculty of Chemistry; Adam Mickiewicz University in Poznań; Umultowska 89c 61-614 Poznań Poland
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22
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Affiliation(s)
- Elena Buñuel
- Departamento de Química Orgánica; Facultad de Ciencias; Universidad Autónoma de Madrid; Av. Francisco Tomás y Valiente 7, Cantoblanco 28049 Madrid Spain
| | - Diego J. Cárdenas
- Departamento de Química Orgánica; Facultad de Ciencias; Universidad Autónoma de Madrid; Av. Francisco Tomás y Valiente 7, Cantoblanco 28049 Madrid Spain
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23
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Xiao YC, Moberg C. Silaborative Carbocyclizations of 1,7-Enynes. Diastereoselective Preparation of Chromane Derivatives. Org Lett 2016; 18:308-11. [DOI: 10.1021/acs.orglett.5b03479] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- You-Cai Xiao
- KTH Royal Institute of Technology, Department of Chemistry, Organic Chemistry, SE 10044 Stockholm, Sweden
| | - Christina Moberg
- KTH Royal Institute of Technology, Department of Chemistry, Organic Chemistry, SE 10044 Stockholm, Sweden
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24
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Gajewski P, Renom-Carrasco M, Facchini SV, Pignataro L, Lefort L, de Vries JG, Ferraccioli R, Forni A, Piarulli U, Gennari C. Chiral (Cyclopentadienone)iron Complexes for the Catalytic Asymmetric Hydrogenation of Ketones. European J Org Chem 2015. [DOI: 10.1002/ejoc.201500146] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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25
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Cornil J, Echeverria PG, Phansavath P, Ratovelomanana-Vidal V, Guérinot A, Cossy J. Heck Coupling Using a Vinyliodo-MIDA Boronate: An Efficient and Modular Access to Polyene Frameworks. Org Lett 2015; 17:948-51. [DOI: 10.1021/acs.orglett.5b00042] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Johan Cornil
- Laboratoire
de Chimie Organique, Institute of Chemistry, Biology and Innovation
(CBI)-UMR 8231, ESPCI ParisTech, CNRS, , 10 rue Vauquelin 75231 Paris Cedex 05, France
| | - Pierre-Georges Echeverria
- Chimie
ParisTech, CNRS, Institut de Recherche de Chimie Paris, PSL Research University, 11 rue Pierre et Marie Curie, 75005 Paris, France
| | - Phannarath Phansavath
- Chimie
ParisTech, CNRS, Institut de Recherche de Chimie Paris, PSL Research University, 11 rue Pierre et Marie Curie, 75005 Paris, France
| | - Virginie Ratovelomanana-Vidal
- Chimie
ParisTech, CNRS, Institut de Recherche de Chimie Paris, PSL Research University, 11 rue Pierre et Marie Curie, 75005 Paris, France
| | - Amandine Guérinot
- Laboratoire
de Chimie Organique, Institute of Chemistry, Biology and Innovation
(CBI)-UMR 8231, ESPCI ParisTech, CNRS, , 10 rue Vauquelin 75231 Paris Cedex 05, France
| | - Janine Cossy
- Laboratoire
de Chimie Organique, Institute of Chemistry, Biology and Innovation
(CBI)-UMR 8231, ESPCI ParisTech, CNRS, , 10 rue Vauquelin 75231 Paris Cedex 05, France
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26
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Yoshida H, Takemoto Y, Takaki K. Borylstannylation of alkynes with inverse regioselectivity: copper-catalyzed three-component coupling using a masked diboron. Chem Commun (Camb) 2015; 51:6297-300. [DOI: 10.1039/c5cc00439j] [Citation(s) in RCA: 56] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Masked boryl and stannyl moieties are smoothly installed into a carbon–carbon triple bond of diverse terminal alkynes under copper catalysis to provide cis-boryl(stannyl)alkenes in a straightforward manner. The regioselectivity is totally inverted to those of the previous borylstannylations, where a masked boryl moiety is attached to an internal carbon of alkynes.
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Affiliation(s)
- H. Yoshida
- Department of Applied Chemistry
- Graduate School of Engineering
- Hiroshima University
- Higashi-Hiroshima 739-8527
- Japan
| | - Y. Takemoto
- Department of Applied Chemistry
- Graduate School of Engineering
- Hiroshima University
- Higashi-Hiroshima 739-8527
- Japan
| | - K. Takaki
- Department of Applied Chemistry
- Graduate School of Engineering
- Hiroshima University
- Higashi-Hiroshima 739-8527
- Japan
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27
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Cornil J, Guérinot A, Cossy J. Linchpin dienes: key building-blocks in the synthesis of polyenic frameworks. Org Biomol Chem 2015; 13:4129-42. [DOI: 10.1039/c5ob00154d] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This review focuses on the preparation of dienic linchpin reagents and on their use in the synthesis of polyenic frameworks.
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Affiliation(s)
- J. Cornil
- Laboratoire de Chimie Organique
- Institute of Chemistry
- Biology and Innovation (CBI)
- UMR 8231
- ESPCI ParisTech/CNRS/PSL Research University
| | - A. Guérinot
- Laboratoire de Chimie Organique
- Institute of Chemistry
- Biology and Innovation (CBI)
- UMR 8231
- ESPCI ParisTech/CNRS/PSL Research University
| | - J. Cossy
- Laboratoire de Chimie Organique
- Institute of Chemistry
- Biology and Innovation (CBI)
- UMR 8231
- ESPCI ParisTech/CNRS/PSL Research University
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28
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Wegener M, Huber F, Bolli C, Jenne C, Kirsch SF. Silver-Free Activation of Ligated Gold(I) Chlorides: The Use of [Me3NB12Cl11]−as a Weakly Coordinating Anion in Homogeneous Gold Catalysis. Chemistry 2014; 21:1328-36. [DOI: 10.1002/chem.201404487] [Citation(s) in RCA: 63] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2014] [Indexed: 01/15/2023]
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29
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Zhang L, Li Y, Zhang L, Wu Y. Vicinal bis(trifluoroacetimidoyl chloride)s: novel building blocks for the synthesis of benzo-fused eight-membered rings via [2 + 2 + 2] cycloadditions. Org Biomol Chem 2014; 12:1040-3. [DOI: 10.1039/c3ob42224k] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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30
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Gao Y, Wu W, Huang H, Huang Y, Jiang H. Palladium-catalyzed intermolecular [3 + 2] carbocyclization of alkynols and propiolates: an efficient entry to halo-cyclopentadienes. Chem Commun (Camb) 2014; 50:846-8. [DOI: 10.1039/c3cc47310d] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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31
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Ogasawara M, Kotani S, Nakajima H, Furusho H, Miyasaka M, Shimoda Y, Wu WY, Sugiura M, Takahashi T, Nakajima M. Atropisomeric Chiral Dienes in Asymmetric Catalysis:C2-Symmetric (Z,Z)-2,3-Bis[1-(diphenylphosphinyl)ethylidene]tetralin as a Highly Active Lewis Base Organocatalyst. Angew Chem Int Ed Engl 2013; 52:13798-802. [DOI: 10.1002/anie.201308112] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2013] [Indexed: 11/10/2022]
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32
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Ogasawara M, Kotani S, Nakajima H, Furusho H, Miyasaka M, Shimoda Y, Wu WY, Sugiura M, Takahashi T, Nakajima M. Atropisomeric Chiral Dienes in Asymmetric Catalysis:C2-Symmetric (Z,Z)-2,3-Bis[1-(diphenylphosphinyl)ethylidene]tetralin as a Highly Active Lewis Base Organocatalyst. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201308112] [Citation(s) in RCA: 5] [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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33
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Deng Y, Bartholomeyzik T, Bäckvall JE. Control of selectivity in palladium-catalyzed oxidative carbocyclization/borylation of allenynes. Angew Chem Int Ed Engl 2013; 52:6283-7. [PMID: 23686783 PMCID: PMC3734627 DOI: 10.1002/anie.201301167] [Citation(s) in RCA: 68] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2013] [Indexed: 01/25/2023]
Affiliation(s)
- Youqian Deng
- Department of Organic Chemistry, Arrhenius Laboratory, Stockholm UniversitySE-106 91 Stockholm (Sweden) E-mail:
| | - Teresa Bartholomeyzik
- Department of Organic Chemistry, Arrhenius Laboratory, Stockholm UniversitySE-106 91 Stockholm (Sweden) E-mail:
| | - Jan-E Bäckvall
- Department of Organic Chemistry, Arrhenius Laboratory, Stockholm UniversitySE-106 91 Stockholm (Sweden) E-mail:
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34
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Deng Y, Bartholomeyzik T, Bäckvall JE. Control of Selectivity in Palladium-Catalyzed Oxidative Carbocyclization/Borylation of Allenynes. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201301167] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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35
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Freitag S, Henning J, Schubert H, Wesemann L. Phosphastannirane: A Phosphorus/Tin(II) Lewis Pair that Undergoes Alkyne and Alkene Addition. Angew Chem Int Ed Engl 2013; 52:5640-3. [DOI: 10.1002/anie.201301153] [Citation(s) in RCA: 58] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2013] [Indexed: 11/09/2022]
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36
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Freitag S, Henning J, Schubert H, Wesemann L. Phosphastanniran: Ein Phosphor/Zinn(II)-Lewis-Paar, das Alkine und Alkene addiert. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201301153] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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37
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Gong W, RajanBabu TV. Conformation and reactivity in dibenzocyclooctadienes (DBCOD). A general approach to the total synthesis of fully substituted DBCOD lignans via borostannylative cyclization of α,ω-diynes. Chem Sci 2013. [DOI: 10.1039/c3sc51751a] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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38
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Gong W, Singidi RR, Gallucci JC, RajanBabu TV. On the stereochemistry of acetylide additions to highly functionalized biphenylcarbaldehydes and multi-component cyclization of 1,n-diynes. Syntheses of dibenzocyclooctadiene lignans. Chem Sci 2012. [DOI: 10.1039/c2sc00920j] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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39
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Pardo-Rodríguez V, Buñuel E, Collado-Sanz D, Cárdenas DJ. Pd-catalyzed borylative cyclisation of 1,7-enynes. Chem Commun (Camb) 2012; 48:10517-9. [DOI: 10.1039/c2cc34468h] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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40
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Gibeau AL, Snyder JK. Indium(III)-Catalyzed Hydrative Cyclization of 1,7-Diynyl Ethers. Org Lett 2011; 13:4280-3. [DOI: 10.1021/ol201624b] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Amanda L. Gibeau
- Department of Chemistry and the Center for Chemical Methodology and Library Development (CMLD-BU), Boston University, Boston, Massachusetts 02215, United States
| | - John K. Snyder
- Department of Chemistry and the Center for Chemical Methodology and Library Development (CMLD-BU), Boston University, Boston, Massachusetts 02215, United States
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41
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Zhou P, Zheng M, Jiang H, Li X, Qi C. An aerobic [2 + 2 + 2] Cyclization via Chloropalladation: From 1,6-Diynes and Acrylates to Substituted Aromatic Carbocycles. J Org Chem 2011; 76:4759-63. [DOI: 10.1021/jo200572n] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Peng Zhou
- School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, P. R. China
| | - Meifang Zheng
- School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, P. R. China
| | - Huanfeng Jiang
- School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, P. R. China
| | - Xianwei Li
- School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, P. R. China
| | - Chaorong Qi
- School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, P. R. China
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42
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Ichikawa Y, Nishimura T, Hayashi T. Rhodium/Chiral Diene-Catalyzed Asymmetric Cyclopolymerization of Achiral 1,8-Diynes. Organometallics 2011. [DOI: 10.1021/om200088q] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Yoshitaka Ichikawa
- Department of Chemistry, Graduate School of Science, Kyoto University, Kyoto 606-8502, Japan
| | - Takahiro Nishimura
- Department of Chemistry, Graduate School of Science, Kyoto University, Kyoto 606-8502, Japan
| | - Tamio Hayashi
- Department of Chemistry, Graduate School of Science, Kyoto University, Kyoto 606-8502, Japan
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