51
|
Wilkins LC, Wieneke P, Newman PD, Kariuki BM, Rominger F, Hashmi ASK, Hansmann MM, Melen RL. Pathways to Functionalized Heterocycles: Propargyl Rearrangement using B(C6F5)3. Organometallics 2015. [DOI: 10.1021/acs.organomet.5b00753] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Lewis C. Wilkins
- School
of Chemistry, Cardiff University, Main Building, Cardiff CF10 3AT, Cymru/Wales, U.K
| | - Philipp Wieneke
- Organisch-Chemisches
Institut, Ruprecht-Karls-Universität Heidelberg, Im Neuenheimer
Feld 270, 69120 Heidelberg, Germany
| | - Paul D. Newman
- School
of Chemistry, Cardiff University, Main Building, Cardiff CF10 3AT, Cymru/Wales, U.K
| | - Benson M. Kariuki
- School
of Chemistry, Cardiff University, Main Building, Cardiff CF10 3AT, Cymru/Wales, U.K
| | - Frank Rominger
- Organisch-Chemisches
Institut, Ruprecht-Karls-Universität Heidelberg, Im Neuenheimer
Feld 270, 69120 Heidelberg, Germany
| | - A. Stephen K. Hashmi
- Organisch-Chemisches
Institut, Ruprecht-Karls-Universität Heidelberg, Im Neuenheimer
Feld 270, 69120 Heidelberg, Germany
- Chemistry
Department, King Abdulaziz University (KAU), Jeddah 21589, Saudi Arabia
| | - Max M. Hansmann
- Organisch-Chemisches
Institut, Ruprecht-Karls-Universität Heidelberg, Im Neuenheimer
Feld 270, 69120 Heidelberg, Germany
| | - Rebecca L. Melen
- School
of Chemistry, Cardiff University, Main Building, Cardiff CF10 3AT, Cymru/Wales, U.K
| |
Collapse
|
52
|
Zárate-Zárate D, Aguilar R, Hernández-Benitez RI, Labarrios EM, Delgado F, Tamariz J. Synthesis of α-ketols by functionalization of captodative alkenes and divergent preparation of heterocycles and natural products. Tetrahedron 2015. [DOI: 10.1016/j.tet.2015.07.010] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
|
53
|
Campbell CD, Greenaway RL, Holton OT, Walker PR, Chapman HA, Russell CA, Carr G, Thomson AL, Anderson EA. Ynamide carbopalladation: a flexible route to mono-, bi- and tricyclic azacycles. Chemistry 2015; 21:12627-39. [PMID: 26189754 PMCID: PMC4557052 DOI: 10.1002/chem.201501710] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2015] [Indexed: 11/09/2022]
Abstract
Bromoenynamides represent precursors to a diversity of azacycles by a cascade sequence of carbopalladation followed by cross-coupling/electrocyclization, or reduction processes. Full details of our investigations into intramolecular ynamide carbopalladation are disclosed, which include the first examples of carbopalladation/cross-coupling reactions using potassium organotrifluoroborate salts; and an understanding of factors influencing the success of these processes, including ring size, and the nature of the coupling partner. Additional mechanistic observations are reported, such as the isolation of triene intermediates for electrocyclization. A variety of hetero-Diels-Alder reactions using the product heterocycles are also described, which provide insight into Diels-Alder regioselectivity.
Collapse
Affiliation(s)
- Craig D Campbell
- Chemistry Research Laboratory, University of Oxford12 Mansfield Road, Oxford, OX1 3TA (U.K.) edward E-mail:
| | - Rebecca L Greenaway
- Chemistry Research Laboratory, University of Oxford12 Mansfield Road, Oxford, OX1 3TA (U.K.) edward E-mail:
| | - Oliver T Holton
- Chemistry Research Laboratory, University of Oxford12 Mansfield Road, Oxford, OX1 3TA (U.K.) edward E-mail:
| | - P Ross Walker
- Chemistry Research Laboratory, University of Oxford12 Mansfield Road, Oxford, OX1 3TA (U.K.) edward E-mail:
| | - Helen A Chapman
- Syngenta Ltd. Jealott's Hill International Research CentreBracknell, Berkshire, RG42 6EY (U.K.)
| | - C Adam Russell
- Syngenta Ltd. Jealott's Hill International Research CentreBracknell, Berkshire, RG42 6EY (U.K.)
| | - Greg Carr
- AstraZenecaAlderley Park, Macclesfield, SK10 4TF (U.K.)
| | - Amber L Thomson
- Chemistry Research Laboratory, University of Oxford12 Mansfield Road, Oxford, OX1 3TA (U.K.) edward E-mail:
| | - Edward A Anderson
- Chemistry Research Laboratory, University of Oxford12 Mansfield Road, Oxford, OX1 3TA (U.K.) edward E-mail:
| |
Collapse
|
54
|
Huang H, Zhu X, He G, Liu Q, Fan J, Zhu H. Controlled Synthesis of 1,3,5-Oxadiazin-2-ones and Oxazolones through Regioselective Iodocyclization of Ynamides. Org Lett 2015; 17:2510-3. [DOI: 10.1021/acs.orglett.5b01045] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Hai Huang
- Department of Applied Chemistry,
College of Sciences, Nanjing Tech University, Nanjing 211816, P. R. China
| | - Xiaolin Zhu
- Department of Applied Chemistry,
College of Sciences, Nanjing Tech University, Nanjing 211816, P. R. China
| | - Guangke He
- Department of Applied Chemistry,
College of Sciences, Nanjing Tech University, Nanjing 211816, P. R. China
| | - Qi Liu
- Department of Applied Chemistry,
College of Sciences, Nanjing Tech University, Nanjing 211816, P. R. China
| | - Junzhen Fan
- Department of Applied Chemistry,
College of Sciences, Nanjing Tech University, Nanjing 211816, P. R. China
| | - Hongjun Zhu
- Department of Applied Chemistry,
College of Sciences, Nanjing Tech University, Nanjing 211816, P. R. China
| |
Collapse
|
55
|
Jiang Y, Wei Y, Tang XY, Shi M. Gold(I)-Catalyzed Selective Heterocyclization of Propargylic Thioureas: Mechanistic Study of Competitive Gold-Activation Mode. Chemistry 2015; 21:7675-81. [DOI: 10.1002/chem.201500466] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2015] [Indexed: 11/08/2022]
|
56
|
Huang H, He G, Zhu G, Zhu X, Qiu S, Zhu H. Palladium-Catalyzed Intramolecular Cyclization of Ynamides: Synthesis of 4-Halo-oxazolones. J Org Chem 2015; 80:3480-7. [DOI: 10.1021/acs.joc.5b00071] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Hai Huang
- Department of Applied Chemistry,
College of Sciences, Nanjing Tech University, Nanjing 211816, People’s Republic of China
| | - Guangke He
- Department of Applied Chemistry,
College of Sciences, Nanjing Tech University, Nanjing 211816, People’s Republic of China
| | - Guohao Zhu
- Department of Applied Chemistry,
College of Sciences, Nanjing Tech University, Nanjing 211816, People’s Republic of China
| | - Xiaolin Zhu
- Department of Applied Chemistry,
College of Sciences, Nanjing Tech University, Nanjing 211816, People’s Republic of China
| | - Shineng Qiu
- Department of Applied Chemistry,
College of Sciences, Nanjing Tech University, Nanjing 211816, People’s Republic of China
| | - Hongjun Zhu
- Department of Applied Chemistry,
College of Sciences, Nanjing Tech University, Nanjing 211816, People’s Republic of China
| |
Collapse
|
57
|
Ferrini S, Chandanshive JZ, Lena S, Comes Franchini M, Giannini G, Tafi A, Taddei M. Ruthenium-Catalyzed Synthesis of 5-Amino-1,2,3-triazole-4-carboxylates for Triazole-Based Scaffolds: Beyond the Dimroth Rearrangement. J Org Chem 2015; 80:2562-72. [DOI: 10.1021/jo502577e] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Serena Ferrini
- Dipartimento
di Biotecnologie, Chimica e Farmacia, Università di Siena, Via A. Moro
2, 53100 Siena, Italy
| | - Jay Zumbar Chandanshive
- Dipartimento
di Chimica Industriale “Toso Montanari”, Università di Bologna, Viale Risogimento 4, 40136 Bologna, Italy
| | - Stefano Lena
- Dipartimento
di Chimica Industriale “Toso Montanari”, Università di Bologna, Viale Risogimento 4, 40136 Bologna, Italy
| | - Mauro Comes Franchini
- Dipartimento
di Chimica Industriale “Toso Montanari”, Università di Bologna, Viale Risogimento 4, 40136 Bologna, Italy
| | - Giuseppe Giannini
- R&D Sigma-Tau Industrie Farmaceutiche Riunite S.p.A., Via Pontina Km 30,400, I-00040 Pomezia, Roma, Italy
| | - Andrea Tafi
- Dipartimento
di Biotecnologie, Chimica e Farmacia, Università di Siena, Via A. Moro
2, 53100 Siena, Italy
| | - Maurizio Taddei
- Dipartimento
di Biotecnologie, Chimica e Farmacia, Università di Siena, Via A. Moro
2, 53100 Siena, Italy
| |
Collapse
|
58
|
Mansfield SJ, Campbell CD, Jones MW, Anderson EA. A robust and modular synthesis of ynamides. Chem Commun (Camb) 2015; 51:3316-9. [DOI: 10.1039/c4cc07876d] [Citation(s) in RCA: 69] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A flexible, modular ynamide synthesis is reported that uses a wide range of amides and electrophiles, including acyclic carbamates, hindered sulfonamides, and aryl amides.
Collapse
|
59
|
Chen Z, Zeng X, Yan B, Zhao Y, Fu Y. Au-catalyzed intramolecular annulations toward fused tricyclic [1,3]oxazino[3,4-a]indol-1-ones under extremely mild conditions. RSC Adv 2015. [DOI: 10.1039/c5ra21109c] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023] Open
Abstract
We report a general and efficient method for the rapid generation of tricyclic [1,3]oxazino[3,4-a]indol-1-ones under extremely mild conditions.
Collapse
Affiliation(s)
- Zhiyuan Chen
- Key Laboratory of Functional Small Organic Molecules
- Ministry of Education
- and College of Chemistry & Chemical Engineering
- Jiangxi Normal University
- Nanchang
| | - Xingping Zeng
- Key Laboratory of Functional Small Organic Molecules
- Ministry of Education
- and College of Chemistry & Chemical Engineering
- Jiangxi Normal University
- Nanchang
| | - Bingyu Yan
- Key Laboratory of Functional Small Organic Molecules
- Ministry of Education
- and College of Chemistry & Chemical Engineering
- Jiangxi Normal University
- Nanchang
| | - Yanlu Zhao
- Key Laboratory of Functional Small Organic Molecules
- Ministry of Education
- and College of Chemistry & Chemical Engineering
- Jiangxi Normal University
- Nanchang
| | - Yang Fu
- Key Laboratory of Functional Small Organic Molecules
- Ministry of Education
- and College of Chemistry & Chemical Engineering
- Jiangxi Normal University
- Nanchang
| |
Collapse
|
60
|
Huang H, He G, Zhu X, Jin X, Qiu S, Zhu H. Iodine-Mediated Oxidation of Ynamides: A Facile Access toN-Monosubstituted α-Ketoamides and α-Ketoimides. European J Org Chem 2014. [DOI: 10.1002/ejoc.201402538] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
|
61
|
Kiruthika SE, Nandakumar A, Perumal PT. Synthesis of Pyrrolo-/Indolo[1,2-a]quinolines and Naphtho[2,1-b]thiophenes from gem-Dibromovinyls and Sulphonamides. Org Lett 2014; 16:4424-7. [DOI: 10.1021/ol5019085] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Selvarangam E. Kiruthika
- Organic Chemistry Division, CSIR-Central Leather Research Institute, Adyar,
Chennai-600020, Tamilnadu, India
| | - Avanashiappan Nandakumar
- Organic Chemistry Division, CSIR-Central Leather Research Institute, Adyar,
Chennai-600020, Tamilnadu, India
| | | |
Collapse
|
62
|
Prechter A, Henrion G, Faudot dit Bel P, Gagosz F. Gold-Catalyzed Synthesis of Functionalized Pyridines by Using 2H-Azirines as Synthetic Equivalents of Alkenyl Nitrenes. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201402470] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
|
63
|
Prechter A, Henrion G, Faudot dit Bel P, Gagosz F. Gold-catalyzed synthesis of functionalized pyridines by using 2H-azirines as synthetic equivalents of alkenyl nitrenes. Angew Chem Int Ed Engl 2014; 53:4959-63. [PMID: 24715521 DOI: 10.1002/anie.201402470] [Citation(s) in RCA: 146] [Impact Index Per Article: 14.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2014] [Indexed: 11/05/2022]
Abstract
2H-Azirines are easily synthesized from the corresponding ketones and, despite possessing a CN bond embedded in a strained three-membered cycle, they are sufficiently stable to be isolated, stored, and manipulated. 2H-Azirines can be regarded as valuable synthetic equivalents of alkenyl nitrenes, however, reactions capitalizing on the cyclic strain of the heterocyclic motif and involving the cleavage of the CN single bond remain surprisingly limited. A gold-catalyzed reaction that allows the formation of polysubstituted functionalized pyridines from easily accessible 2-propargyl 2H-azirine derivatives was developed. This transformation, which corresponds to an unprecedented intramolecular transfer of an alkenyl nitrene to an alkyne, proceeds with low catalyst loading, is efficient, and exhibits a high functional-group tolerance and a wide substrate scope.
Collapse
Affiliation(s)
- Agnes Prechter
- Département de Chimie, UMR 7652 and 7653 CNRS, Ecole Polytechnique, 91128 Palaiseau (France)
| | | | | | | |
Collapse
|
64
|
|
65
|
Gold(I)-Catalyzed Reactions of 1-(ortho-Alkynylaryl)ureas: Highly Selective Heterocyclization and Synthesis of MixedN,O-Acetals. Adv Synth Catal 2014. [DOI: 10.1002/adsc.201300730] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
|
66
|
Tan G, Huang X, Wu Q, Zhang LQ, You J. Rh(iii)-catalyzed annulation of N-methoxybenzamides with ynesulfonamides at room temperature: a practical and efficient route to 4-aminoisoquinolone derivatives. RSC Adv 2014. [DOI: 10.1039/c4ra09500f] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A mild Rh(iii)-catalyzed annulation of N-methoxybenzamides with ynesulfonamides has been developed for the synthesis of 4-aminoisoquinolone derivatives under external-oxidant-free conditions.
Collapse
Affiliation(s)
- Guangying Tan
- Key Laboratory of Green Chemistry and Technology of Ministry of Education
- College of Chemistry
- State Key Laboratory of Biotherapy
- West China Medical School
- Sichuan University
| | - Xiaolei Huang
- Key Laboratory of Green Chemistry and Technology of Ministry of Education
- College of Chemistry
- State Key Laboratory of Biotherapy
- West China Medical School
- Sichuan University
| | - Qian Wu
- Key Laboratory of Green Chemistry and Technology of Ministry of Education
- College of Chemistry
- State Key Laboratory of Biotherapy
- West China Medical School
- Sichuan University
| | - Luo-Qiang Zhang
- Key Laboratory of Green Chemistry and Technology of Ministry of Education
- College of Chemistry
- State Key Laboratory of Biotherapy
- West China Medical School
- Sichuan University
| | - Jingsong You
- Key Laboratory of Green Chemistry and Technology of Ministry of Education
- College of Chemistry
- State Key Laboratory of Biotherapy
- West China Medical School
- Sichuan University
| |
Collapse
|
67
|
García-García P, Müller M, Corma A. MOF catalysis in relation to their homogeneous counterparts and conventional solid catalysts. Chem Sci 2014. [DOI: 10.1039/c4sc00265b] [Citation(s) in RCA: 265] [Impact Index Per Article: 26.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
|
68
|
Kiruthika SE, Perumal PT. CuI-Catalyzed Coupling of gem-Dibromovinylanilides and Sulfonamides: An Efficient Method for the Synthesis of 2-Amidoindoles and Indolo[1,2-a]quinazolines. Org Lett 2013; 16:484-7. [DOI: 10.1021/ol403365t] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Selvarangam E. Kiruthika
- Organic Chemistry Division,
CSIR-Central Leather Research Institute, Adyar, Chennai 600020, Tamilnadu, India
| | | |
Collapse
|
69
|
Lu Z, Luo F, Wang L, Zhu G. Palladium-Catalyzed Direct Alkenylation of 2-Oxazolones: An Entry to 3,4,5-Trisubstituted 2-Oxazolones. J Org Chem 2013; 78:10894-901. [DOI: 10.1021/jo4018793] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- Zenghui Lu
- Department
of Chemistry, Zhejiang Normal University, 688 Yingbin Road, Jinhua 321004, People’s Republic of China
| | - Fang Luo
- Department
of Chemistry, Zhejiang Normal University, 688 Yingbin Road, Jinhua 321004, People’s Republic of China
| | - Lina Wang
- Department
of Chemistry, Zhejiang Normal University, 688 Yingbin Road, Jinhua 321004, People’s Republic of China
| | - Gangguo Zhu
- Department
of Chemistry, Zhejiang Normal University, 688 Yingbin Road, Jinhua 321004, People’s Republic of China
| |
Collapse
|
70
|
Oppedisano A, Prandi C, Venturello P, Deagostino A, Goti G, Scarpi D, Occhiato EG. Synthesis of Vinylogous Amides by Gold(I)-Catalyzed Cyclization of N-Boc-Protected 6-Alkynyl-3,4-dihydro-2H-pyridines. J Org Chem 2013; 78:11007-16. [DOI: 10.1021/jo4019914] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Alberto Oppedisano
- Dipartimento
di Chimica, Università di Torino, via P. Giuria 7, 10125 Torino, Italy
| | - Cristina Prandi
- Dipartimento
di Chimica, Università di Torino, via P. Giuria 7, 10125 Torino, Italy
| | - Paolo Venturello
- Dipartimento
di Chimica, Università di Torino, via P. Giuria 7, 10125 Torino, Italy
| | - Annamaria Deagostino
- Dipartimento
di Chimica, Università di Torino, via P. Giuria 7, 10125 Torino, Italy
| | - Giulio Goti
- Dipartimento
di Chimica “Ugo Schiff”, Università di Firenze, Via della
Lastruccia 13, 50019 Sesto Fiorentino, FI, Italy
| | - Dina Scarpi
- Dipartimento
di Chimica “Ugo Schiff”, Università di Firenze, Via della
Lastruccia 13, 50019 Sesto Fiorentino, FI, Italy
| | - Ernesto G. Occhiato
- Dipartimento
di Chimica “Ugo Schiff”, Università di Firenze, Via della
Lastruccia 13, 50019 Sesto Fiorentino, FI, Italy
| |
Collapse
|
71
|
Frischmuth A, Knochel P. Preparation of Functionalized Indoles and Azaindoles by the Intramolecular Copper-Mediated Carbomagnesiation of Ynamides. Angew Chem Int Ed Engl 2013; 52:10084-8. [DOI: 10.1002/anie.201304380] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2013] [Indexed: 11/10/2022]
|
72
|
Synthese von funktionalisierten Indolen und Azaindolen durch intramolekulare Kupfer-vermittelte Carbomagnesierung von Inamiden. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201304380] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
|
73
|
Blanco Jaimes MC, Weingand V, Rominger F, Hashmi ASK. From ynamides to highly substituted benzo[b]furans: gold(I)-catalyzed 5-endo-dig-cyclization/rearrangement of alkylic oxonium intermediates. Chemistry 2013; 19:12504-11. [PMID: 23922052 DOI: 10.1002/chem.201301595] [Citation(s) in RCA: 65] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2013] [Revised: 05/26/2013] [Indexed: 11/09/2022]
Abstract
A series of arylynamides with alkyloxy groups at the ortho position of the aryl group was prepared through a short alkylation/cross-coupling/amidation sequence. The gold-catalyzed conversion of these substrates combined both C-O and C-C formation steps, thus providing benzofurans with amine functionalities at the 2-position and alkyl groups at the 3-position. Cross-over experiments showed that the alkyl-migration step was an intermolecular process. X-ray crystal-structure analysis of two of the products supported our structural assignment. In some cases, the corresponding benzofurans without the alkyl group at the 3-position were obtained as side-products, which were formed through a competing protodeauration process.
Collapse
Affiliation(s)
- Maria Camila Blanco Jaimes
- Organisch-Chemisches Institut, Ruprecht-Karls-Universität Heidelberg, Im Neuenheimer Feld 270, 69120 Heidelberg (Germany), Fax: (+49) 711-685-4205
| | | | | | | |
Collapse
|
74
|
Egi M, Ota Y, Nishimura Y, Shimizu K, Azechi K, Akai S. Efficient Intramolecular Cyclizations of Phenoxyethynyl Diols into Multisubstituted α,β-Unsaturated Lactones. Org Lett 2013; 15:4150-3. [DOI: 10.1021/ol401824v] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Masahiro Egi
- School of Pharmaceutical Sciences, University of Shizuoka, 52-1, Yada, Suruga-ku, Shizuoka, Shizuoka 422-8526, Japan
| | - Yuya Ota
- School of Pharmaceutical Sciences, University of Shizuoka, 52-1, Yada, Suruga-ku, Shizuoka, Shizuoka 422-8526, Japan
| | - Yuka Nishimura
- School of Pharmaceutical Sciences, University of Shizuoka, 52-1, Yada, Suruga-ku, Shizuoka, Shizuoka 422-8526, Japan
| | - Kaori Shimizu
- School of Pharmaceutical Sciences, University of Shizuoka, 52-1, Yada, Suruga-ku, Shizuoka, Shizuoka 422-8526, Japan
| | - Kenji Azechi
- School of Pharmaceutical Sciences, University of Shizuoka, 52-1, Yada, Suruga-ku, Shizuoka, Shizuoka 422-8526, Japan
| | - Shuji Akai
- School of Pharmaceutical Sciences, University of Shizuoka, 52-1, Yada, Suruga-ku, Shizuoka, Shizuoka 422-8526, Japan
| |
Collapse
|
75
|
Yang M, Odelberg SJ, Tong Z, Li DY, Looper RE. Cationic dirhodium carboxylate-catalyzed synthesis of dihydropyrimidones from propargyl ureas. Tetrahedron 2013; 69:5744-5750. [PMID: 23807819 PMCID: PMC3690933 DOI: 10.1016/j.tet.2013.04.071] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Cationic Rh(II) complexes are able to catalyze the regioselective hydroamination of propargyl ureas in a 6-endo fashion. This transformation permits access to interesting substitution patterns of dihydropyrimidines which have found use as nucleotide exchange factor inhibitors.
Collapse
Affiliation(s)
- Miao Yang
- Department of Chemistry, University of Utah, Salt Lake City, UT 84112, United States
| | - Shannon J. Odelberg
- Department of Medicine, Cardiology Division, University of Utah, Salt Lake City, UT 84132, United States
- Program in Molecular Medicine, University of Utah, Salt Lake City, UT 84112, United States
- Navigen Inc., Salt Lake City, UT 84108, United States
| | | | - Dean Y. Li
- Department of Medicine, Cardiology Division, University of Utah, Salt Lake City, UT 84132, United States
- Program in Molecular Medicine, University of Utah, Salt Lake City, UT 84112, United States
- Department of Oncology, University of Utah, Salt Lake City, UT 84112, United States
| | - Ryan E. Looper
- Department of Chemistry, University of Utah, Salt Lake City, UT 84112, United States
| |
Collapse
|
76
|
Ghosh N, Nayak S, Sahoo AK. Gold(I)-catalyzed 6-endo-dig hydrative cyclization of an alkyne-tethered ynamide: access to 1,6-dihydropyridin-2(3H)ones. Chemistry 2013; 19:9428-33. [PMID: 23788463 DOI: 10.1002/chem.201301599] [Citation(s) in RCA: 71] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2013] [Indexed: 11/07/2022]
Affiliation(s)
- Nayan Ghosh
- School of Chemistry, University of Hyderabad, Hyderabad-500046, India
| | | | | |
Collapse
|
77
|
Wang KB, Ran RQ, Xiu SD, Li CY. Synthesis of 3-Aza-bicyclo[3.1.0]hexan-2-one Derivatives via Gold-Catalyzed Oxidative Cyclopropanation of N-Allylynamides. Org Lett 2013; 15:2374-7. [PMID: 23651134 DOI: 10.1021/ol4007629] [Citation(s) in RCA: 108] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Kai-Bing Wang
- Department of Chemistry, Zhejiang Sci-Tech University, Xiasha West Higher Education District, Hangzhou 310018, China
| | - Rui-Qiao Ran
- Department of Chemistry, Zhejiang Sci-Tech University, Xiasha West Higher Education District, Hangzhou 310018, China
| | - Shi-Dong Xiu
- Department of Chemistry, Zhejiang Sci-Tech University, Xiasha West Higher Education District, Hangzhou 310018, China
| | - Chuan-Ying Li
- Department of Chemistry, Zhejiang Sci-Tech University, Xiasha West Higher Education District, Hangzhou 310018, China
| |
Collapse
|
78
|
Rettenmeier E, Schuster AM, Rudolph M, Rominger F, Gade CA, Hashmi ASK. Gold Catalysis: Highly Functionalized Cyclopentadienes Prepared by Intermolecular Cyclization of Ynamides and Propargylic Carboxylates. Angew Chem Int Ed Engl 2013; 52:5880-4. [DOI: 10.1002/anie.201301382] [Citation(s) in RCA: 101] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2013] [Indexed: 11/05/2022]
|
79
|
Rettenmeier E, Schuster AM, Rudolph M, Rominger F, Gade CA, Hashmi ASK. Gold-Katalyse: hochfunktionalisierte Cyclopentadienderivate durch intermolekulare Cyclisierung von Inamiden und Propargylcarboxylaten. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201301382] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
80
|
Sueda T, Kawada A, Urashi Y, Teno N. Ag- and Au-Catalyzed Addition of Alcohols to Ynimides: β-Regioselective Carbonylation and Production of Oxazoles. Org Lett 2013; 15:1560-3. [DOI: 10.1021/ol400338x] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Takuya Sueda
- Faculty of Pharmaceutical of Sciences, Hiroshima International University, 5-1-1 Hirokoshingai, Kure City, Hiroshima 737-0112, Japan
| | - Arisa Kawada
- Faculty of Pharmaceutical of Sciences, Hiroshima International University, 5-1-1 Hirokoshingai, Kure City, Hiroshima 737-0112, Japan
| | - Yumi Urashi
- Faculty of Pharmaceutical of Sciences, Hiroshima International University, 5-1-1 Hirokoshingai, Kure City, Hiroshima 737-0112, Japan
| | - Naoki Teno
- Faculty of Pharmaceutical of Sciences, Hiroshima International University, 5-1-1 Hirokoshingai, Kure City, Hiroshima 737-0112, Japan
| |
Collapse
|
81
|
Zhang J, Meng LG, Li P, Wang L. The sequential reactions of tetrazoles with bromoalkynes for the synthesis of (Z)-N-(2-bromo-1-vinyl)-N-arylcyanamides and 2-arylindoles. RSC Adv 2013. [DOI: 10.1039/c3ra40669e] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
|
82
|
Lu Z, Cui W, Xia S, Bai Y, Luo F, Zhu G. Preparation of 3,4,5-Trisubstituted Oxazolones by Pd-Catalyzed Coupling of N-Alkynyl tert-Butyloxycarbamates with Aryl Halides and Related Electrophiles. J Org Chem 2012; 77:9871-7. [DOI: 10.1021/jo301794w] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Zenghui Lu
- Department
of Chemistry, Zhejiang Normal University, 688 Yingbin Road, Jinhua 321004, China
| | - Weijian Cui
- Department
of Chemistry, Zhejiang Normal University, 688 Yingbin Road, Jinhua 321004, China
| | - Siyuan Xia
- Department
of Chemistry, Zhejiang Normal University, 688 Yingbin Road, Jinhua 321004, China
| | - Yihui Bai
- Department
of Chemistry, Zhejiang Normal University, 688 Yingbin Road, Jinhua 321004, China
| | - Fang Luo
- Department
of Chemistry, Zhejiang Normal University, 688 Yingbin Road, Jinhua 321004, China
| | - Gangguo Zhu
- Department
of Chemistry, Zhejiang Normal University, 688 Yingbin Road, Jinhua 321004, China
| |
Collapse
|
83
|
Lu Z, Xu X, Yang Z, Kong L, Zhu G. Approach to highly functionalized oxazolones by a Pd-catalyzed cyclization of N-alkynyl tert-butyloxycarbamates. Tetrahedron Lett 2012. [DOI: 10.1016/j.tetlet.2012.04.074] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
|
84
|
Lu Z, Yang Z, Cui W, Zhu G. A Facile Access to 3,5-Disubstituted Oxazolones Featuring a Cu-catalyzed Cyclization of N-Alkynyl tert-Butyl Carbamates. CHEM LETT 2012. [DOI: 10.1246/cl.2012.636] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Zenghui Lu
- Department of Chemistry, Zhejiang Normal University
| | | | - Weijian Cui
- Department of Chemistry, Zhejiang Normal University
| | - Gangguo Zhu
- Department of Chemistry, Zhejiang Normal University
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Zhejiang Normal University
| |
Collapse
|
85
|
Wang S, Li P, Yu L, Wang L. Sequential and One-Pot Reactions of Phenols with Bromoalkynes for the Synthesis of (Z)-2-Bromovinyl Phenyl Ethers and Benzo[b]furans. Org Lett 2011; 13:5968-71. [DOI: 10.1021/ol202383z] [Citation(s) in RCA: 109] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Shihua Wang
- Department of Chemistry, Huaibei Normal University, Huaibei, Anhui 235000, P. R. China
| | - Pinhua Li
- Department of Chemistry, Huaibei Normal University, Huaibei, Anhui 235000, P. R. China
| | - Lin Yu
- Department of Chemistry, Huaibei Normal University, Huaibei, Anhui 235000, P. R. China
| | - Lei Wang
- Department of Chemistry, Huaibei Normal University, Huaibei, Anhui 235000, P. R. China
| |
Collapse
|
86
|
Corma A, Leyva-Pérez A, Sabater MJ. Gold-catalyzed carbon-heteroatom bond-forming reactions. Chem Rev 2011; 111:1657-712. [PMID: 21391565 DOI: 10.1021/cr100414u] [Citation(s) in RCA: 1107] [Impact Index Per Article: 85.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- A Corma
- Instituto de Tecnología Química UPV-CSIC, Universidad Politécnica de Valencia-Consejo Superior de Investigaciones Científicas, Avenida Los Naranjos s/n, 46022, Valencia, Spain.
| | | | | |
Collapse
|
87
|
Garcia P, Harrak Y, Diab L, Cordier P, Ollivier C, Gandon V, Malacria M, Fensterbank L, Aubert C. Silver-catalyzed cycloisomerization of 1,n-allenynamides. Org Lett 2011; 13:2952-5. [PMID: 21534621 DOI: 10.1021/ol201041h] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A variety of allenynamides can undergo cycloisomerization reactions in the presence of silver triflate thus leading to the formation of N-containing heterocycles incorporating cross-conjugated trienes. Access to new dienic 4-piperidinone and azepane motifs was achieved. An extension to one-pot tandem sequences involving silver-catalyzed cycloisomerization/Diels-Alder reaction was also examined.
Collapse
Affiliation(s)
- Pierre Garcia
- UPMC Université Paris 06, Sorbonne Universités, Institut Parisien de Chimie Moléculaire (UMR CNRS 7201), Paris, France
| | | | | | | | | | | | | | | | | |
Collapse
|
88
|
Kramer S, Odabachian Y, Overgaard J, Rottländer M, Gagosz F, Skrydstrup T. Taking Advantage of the Ambivalent Reactivity of Ynamides in Gold Catalysis: A Rare Case of Alkyne Dimerization. Angew Chem Int Ed Engl 2011; 50:5090-4. [DOI: 10.1002/anie.201100327] [Citation(s) in RCA: 98] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2011] [Indexed: 11/05/2022]
|
89
|
Kramer S, Odabachian Y, Overgaard J, Rottländer M, Gagosz F, Skrydstrup T. Taking Advantage of the Ambivalent Reactivity of Ynamides in Gold Catalysis: A Rare Case of Alkyne Dimerization. Angew Chem Int Ed Engl 2011. [DOI: 10.1002/ange.201100327] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
|
90
|
Intramolecular Palladium-Catalyzed Aminocarboxylation of Olefins as a Direct Route to Bicyclic Oxazolidinones. Adv Synth Catal 2011. [DOI: 10.1002/adsc.201000889] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
|
91
|
Jurberg ID, Gagosz F. Formation of cinnoline derivatives by a gold(I)-catalyzed hydroarylation of N-propargyl-N′-arylhydrazines. J Organomet Chem 2011. [DOI: 10.1016/j.jorganchem.2010.06.017] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
|
92
|
DeKorver KA, Li H, Lohse AG, Hayashi R, Lu Z, Zhang Y, Hsung RP. Ynamides: a modern functional group for the new millennium. Chem Rev 2010; 110:5064-106. [PMID: 20429503 DOI: 10.1021/cr100003s] [Citation(s) in RCA: 722] [Impact Index Per Article: 51.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- Kyle A DeKorver
- Department of Chemistry, University of Wisconsin, Madison, Wisconsin 53705, USA
| | | | | | | | | | | | | |
Collapse
|
93
|
Jouvin K, Couty F, Evano G. Copper-catalyzed alkynylation of amides with potassium alkynyltrifluoroborates: a room-temperature, base-free synthesis of ynamides. Org Lett 2010; 12:3272-5. [PMID: 20565123 DOI: 10.1021/ol101322k] [Citation(s) in RCA: 81] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
An efficient copper-mediated method for the coupling of potassium alkynyltrifluoroborates with nitrogen nucleophiles is reported. This reaction provides the first base-free and room-temperature synthesis of ynamides and allows for an easy preparation of these useful building blocks.
Collapse
Affiliation(s)
- Kévin Jouvin
- Institut Lavoisier de Versailles, UMR CNRS 8180, Université de Versailles Saint-Quentin en Yvelines, 45, avenue des Etats-Unis, 78035 Versailles Cedex, France
| | | | | |
Collapse
|
94
|
Dooleweerdt K, Birkedal H, Ruhland T, Skrydstrup T. Irregularities in the effect of potassium phosphate in ynamide synthesis. J Org Chem 2010; 73:9447-50. [PMID: 18991381 DOI: 10.1021/jo801935b] [Citation(s) in RCA: 67] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The yields of ynamides using Hsung's second generation protocol depend substantially on the quality of K(3)PO(4). Samples of K(3)PO(4) from different suppliers were investigated by various techniques, revealing that the use of pure and anhydrous K(3)PO(4) provides higher ynamide yields in comparison to samples contaminated with hydrates (K(3)PO(4) x 1.5 H(2)O and K(3)PO(4) x 7 H(2)O). With high quality K(3)PO(4), a number of ynamides were synthesized in yields of 52-91%. In addition, we report that ynamides can undergo regioselective hydroamination with carbamates.
Collapse
Affiliation(s)
- Karin Dooleweerdt
- Department of Chemistry and the Interdisciplinary Nanoscience Center, University of Aarhus, Langelandsgade 140, 8000 Aarhus C, Denmark
| | | | | | | |
Collapse
|
95
|
Davies PW, Cremonesi A, Martin N. Site-specific introduction of gold-carbenoids by intermolecular oxidation of ynamides or ynol ethers. Chem Commun (Camb) 2010; 47:379-81. [PMID: 20830369 DOI: 10.1039/c0cc02736g] [Citation(s) in RCA: 173] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Ynamides and ynol ethers undergo intermolecular gold-catalysed reaction with a nucleophilic oxidant to access metal-carbenoid reactivity patterns. A site-specific oxidation/1,2-insertion cascade is used for a general access to functionalised α,β-unsaturated carboxylic acid derivatives and vinylogous carbimates.
Collapse
Affiliation(s)
- Paul W Davies
- School of Chemistry, University of Birmingham, Edgbaston, B15 2TT, Birmingham, UK.
| | | | | |
Collapse
|
96
|
Antoniotti S, Dalla V, Duñach E. Metalltriflimidate sind bessere Katalysatoren für die organische Synthese als Metalltriflate - der Effekt eines stark delokalisierten Gegenions. Angew Chem Int Ed Engl 2010. [DOI: 10.1002/ange.200906407] [Citation(s) in RCA: 63] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
97
|
Antoniotti S, Dalla V, Duñach E. Metal Triflimidates: Better than Metal Triflates as Catalysts in Organic Synthesis-The Effect of a Highly Delocalized Counteranion. Angew Chem Int Ed Engl 2010; 49:7860-88. [PMID: 20715025 DOI: 10.1002/anie.200906407] [Citation(s) in RCA: 150] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Sylvain Antoniotti
- LCMBA. UMR 6001, Université de Nice-Sophia Antipolis, C.N.R.S. Institut de Chimie de Nice, 28, avenue de Valrose, 06108 F. Nice, France
| | | | | |
Collapse
|
98
|
Evano G, Coste A, Jouvin K. Ynamides: Versatile Tools in Organic Synthesis. Angew Chem Int Ed Engl 2010; 49:2840-59. [DOI: 10.1002/anie.200905817] [Citation(s) in RCA: 672] [Impact Index Per Article: 48.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
|
99
|
Evano G, Coste A, Jouvin K. Inamide: vielseitige Bausteine für die organische Synthese. Angew Chem Int Ed Engl 2010. [DOI: 10.1002/ange.200905817] [Citation(s) in RCA: 213] [Impact Index Per Article: 15.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
|
100
|
Lee YU, Lim CM, Kim SH, Shin SH. Synthesis of Cyclohexene Derivatives from 1,5-Enynes via Gold-Catalysis and Iodocyclization: A Comparative Study and Applications in the Synthesis of 7/5- or 8/5-Fused Rings and Biaryls. B KOREAN CHEM SOC 2010. [DOI: 10.5012/bkcs.2010.31.03.670] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
|