1
|
Zhang P, Liu H, Xu S, He Y, He X, Sun B, Hu J. Direct Construction of 1,4-Dihydropyridazines and Pyrazoles via Annulation of Alkyl 2-Aroyl-1-chlorocyclopropanecarboxylates. J Org Chem 2024; 89:9853-9860. [PMID: 38822472 DOI: 10.1021/acs.joc.4c00520] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/03/2024]
Abstract
An efficient and chemodivergent synthesis of highly functionalized 1,4-dihydropyridazines and pyrazoles has been accomplished via base-promoted annulation between hydrazones and alkyl 2-aroyl-1-chlorocyclopropanecarboxylates, respectively. This transition-metal-free domino reaction proceeded rapidly under mild basic conditions, affording potentially bioactive 1,4-dihydropyridazine and pyrazole derivatives in moderate yields. The conversion of 1,4-dihydropyridazine to pyrazole was confirmed by adjusting the quantity of the base.
Collapse
Affiliation(s)
- Pengwei Zhang
- Key Laboratory of Functional Metal-Organic Compounds of Hunan Province, Key Laboratory of Functional Organometallic Materials, University of Hunan Province, Hengyang Normal University, Hengyang 421008, P. R. China
| | - Huili Liu
- Key Laboratory of Functional Metal-Organic Compounds of Hunan Province, Key Laboratory of Functional Organometallic Materials, University of Hunan Province, Hengyang Normal University, Hengyang 421008, P. R. China
| | - Shuo Xu
- Key Laboratory of Functional Metal-Organic Compounds of Hunan Province, Key Laboratory of Functional Organometallic Materials, University of Hunan Province, Hengyang Normal University, Hengyang 421008, P. R. China
| | - Yiqun He
- Key Laboratory of Functional Metal-Organic Compounds of Hunan Province, Key Laboratory of Functional Organometallic Materials, University of Hunan Province, Hengyang Normal University, Hengyang 421008, P. R. China
| | - Xinhao He
- Key Laboratory of Functional Metal-Organic Compounds of Hunan Province, Key Laboratory of Functional Organometallic Materials, University of Hunan Province, Hengyang Normal University, Hengyang 421008, P. R. China
| | - Bing Sun
- School of Chemistry, Chemical Engineering and Life Sciences, Wuhan University of Technology, Wuhan 430070, P. R. China
| | - Junhao Hu
- Key Laboratory of Functional Metal-Organic Compounds of Hunan Province, Key Laboratory of Functional Organometallic Materials, University of Hunan Province, Hengyang Normal University, Hengyang 421008, P. R. China
| |
Collapse
|
2
|
Prakash M, Samanta S. Base-promoted cyclization of ortho-hydroxyacetophenones with in situ generated cyclopropenes: diastereoselective access to spirobenzo[ b]oxepines and related precursors. Org Biomol Chem 2023; 21:2001-2014. [PMID: 36789745 DOI: 10.1039/d3ob00077j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
An unprecedented [5 + 2] spirocyclization route to obtain a vital class of functionalized spirobenzo[b]oxepine-cyclopropanes in good to high yields with excellent diastereoselectivities is reported. This domino reaction proceeds through a regioselective oxa-Michael addition of ortho-hydroxyacetophenones as 1,5-binucleophiles to in situ produced highly reactive cyclopropenes from 2-aroyl-1-chlorocyclopropanecarboxylates triggered by Cs2CO3 and the subsequent intramolecular aldol reaction under heating conditions, enabling the formation of new C-O and C-C bonds for benzo[b]oxepine ring synthesis. Moreover, at ambient temperature, the above C-O/C-C bond-forming event takes place preferentially via a [4 + 2] annulation path over a spirocyclization route, leading to substituted fused-cyclopropanes with good diastereoselectivities. Gratifyingly, further alterations of the obtained spirobenzo[b]oxepines and tetrahydrocyclopropa[b]chromenes afford fascinating classes of 4H-chromen-4-ones and cyclopenta[c]chromenes, respectively, under metal-free conditions.
Collapse
Affiliation(s)
- Meher Prakash
- Indian Institute of Technology Indore, Discipline of Chemistry, 453552, Indore, India.
| | - Sampak Samanta
- Indian Institute of Technology Indore, Discipline of Chemistry, 453552, Indore, India.
| |
Collapse
|
3
|
Prakash M, Rani P, Samanta S. A substrate-dependent reaction of 1-aryl-2-alkyl-1,2-diketones with 2-aroyl-1-chlorocyclopropanecarboxylates: selective access to 2',5'-dicyclopropoxy-1,1':4',1''-teraryls and pentafulvenes. Org Biomol Chem 2022; 20:6445-6458. [PMID: 35894220 DOI: 10.1039/d2ob00971d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An interesting substrate-controlled one-pot approach to highly substituted 2',5'-dicyclopropoxy-1,1':4',1''-teraryls and 6-hydroxypentafulvenes involving various 1,2-diketones and 2-aroyl-1-chlorocyclopropanecarboxylates as 3C Michael acceptors triggered by Cs2CO3 has been developed. We noticed that 1,2-diketones play a decisive role in this reaction to determine the product's selectivity. For example, aryl rings having electron-poor functionalities at the para and meta-positions of 1,2-diketones led to 2,5-diarylhydroquinones selectively via a cyclodimerization/double oxa-Michael process with highly strained cyclopropenes. However, when 1-naphthyl/electron-donating aryl/ortho-aryl-substituted 1,2-diketones were chosen, the Michael-initiated ring expansion reaction (C-C and CC bonds) took place under the same conditions that gave the corresponding pentafulvenes predominately. Moreover, this reaction has several imperative features such as good to high diastereoselectivities, wide substrate scope, good functional group tolerance, transition metal-free process, etc.
Collapse
Affiliation(s)
- Meher Prakash
- Indian Institute of Technology Indore, Discipline of Chemistry, 453552, Indore, India.
| | - Poonam Rani
- Indian Institute of Technology Indore, Discipline of Chemistry, 453552, Indore, India.
| | - Sampak Samanta
- Indian Institute of Technology Indore, Discipline of Chemistry, 453552, Indore, India.
| |
Collapse
|
4
|
Abstract
Heterocyclic rings are the fundamental building blocks of biological systems and have wide applications in synthetic chemistry and medicinal science. The development of novel synthetic methodology for heterocyclic skeletons from a variety of starting materials has made great progress in the past decades. Meanwhile, highly strained cyclopropenes as reactive reagents in organic transformations have drawn much attention from chemists. The rich chemical reactivity and reaction routes have been well investigated, and some review articles related to the reactivity of cyclopropenes and the construction of carbocycles and acyclic compounds have appeared in these years. Thus, this review mainly focuses on the progress in the construction of heterocyclic rings starting from various cyclopropenes including the reactions of commonly available stable cyclopropenes, in situ generated reactive cyclopropenes and cyclopropene precursors during this decade. Firstly, the transformations of common cyclopropenes into donor-type vinyl metal carbenes via transition metal induced ring opening, direct metalation of the CC bond of metal complexes, and cycloaddition reactions with 1,3-dipoles are described. Next, the annulation reactions of reactive cyclopropenes generated in situ with donor-acceptor reagents, intramolecular nucleophilic addition, and the cycloaddition reactions with 1,3-dipoles are introduced. Then, the transformation of cyclopropene precursors such as alkyl 1-chloro- or 1-alkoxy-2-aroylcyclopropanecarboxylates into five-membered heteroaromatic compounds is also mentioned. In addition, a brief outlook of the opportunity and challenges in the field of bio-orthogonal reactions related to cyclopropenes is given.
Collapse
Affiliation(s)
- Hengrui Huo
- School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, 1037 Luoyu Road, Wuhan 430074, China. .,Hebei Key Laboratory of Heterocyclic Compounds, College of Chemical Engineering and Materials, Handan University, 530 North College Road, Handan 056005, China
| | - Yuefa Gong
- School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, 1037 Luoyu Road, Wuhan 430074, China.
| |
Collapse
|
5
|
|
6
|
Huang L, Luo C, Xu P, Liu B, Zhang D, Zhang J, Pang D, Gong Y. Synthesis of methyl 1,
5‐diaryl‐1
H
‐pyrrole‐2‐carboxylates via acid‐catalyzed ring‐opening/ring‐closure sequence. J Heterocycl Chem 2021. [DOI: 10.1002/jhet.4306] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Long Huang
- Engineer Center of New Generation Tobacco of China Tabacco Hubei Industrial Co. Ltd Wuhan People's Republic of China
| | - Chenghao Luo
- Engineer Center of New Generation Tobacco of China Tabacco Hubei Industrial Co. Ltd Wuhan People's Republic of China
| | - Panpan Xu
- School of Chemistry and Chemical Engineering Huazhong University of Science and Technology Wuhan People's Republic of China
| | - Bing Liu
- Engineer Center of New Generation Tobacco of China Tabacco Hubei Industrial Co. Ltd Wuhan People's Republic of China
| | - Duntie Zhang
- Engineer Center of New Generation Tobacco of China Tabacco Hubei Industrial Co. Ltd Wuhan People's Republic of China
| | - Jing Zhang
- Engineer Center of New Generation Tobacco of China Tabacco Hubei Industrial Co. Ltd Wuhan People's Republic of China
| | - Denghong Pang
- Engineer Center of New Generation Tobacco of China Tabacco Hubei Industrial Co. Ltd Wuhan People's Republic of China
| | - Yuefa Gong
- School of Chemistry and Chemical Engineering Huazhong University of Science and Technology Wuhan People's Republic of China
| |
Collapse
|
7
|
A straightforward route to alkyl
5‐arylthiophene
‐2‐thiocarboxylates from alkyl
2‐aroyl
‐1‐chlorocyclopropanecarboxylates. J Heterocycl Chem 2021. [DOI: 10.1002/jhet.4225] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
|
8
|
Kazia A, Melngaile R, Mishnev A, Veliks J. Johnson-Corey-Chaykovsky fluorocyclopropanation of double activated alkenes: scope and limitations. Org Biomol Chem 2020; 18:1384-1388. [PMID: 31998934 DOI: 10.1039/c9ob02712b] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Johnson-Corey-Chaykovsky fluorocyclopropanation of double activated alkenes utilizing S-monofluoromethyl-S-phenyl-2,3,4,5-tetramethylphenylsulfonium tetrafluoroborate is an efficient approach to obtain a range of monofluorocyclopropane derivatives. So far, fluoromethylsulfonium salts have displayed the broadest scope for direct fluoromethylene transfer. In contrast to more commonly used fluorohalomethanes or freon derivatives, diarylfluoromethylsulfonium salts are bench stable, easy-to use reagents useful for the direct transfer of a fluoromethylene group to alkenes giving access to the challenging products - fluorocyclopropane derivatives. Interplay between the reactivity of the starting materials and stability of the fluorocyclopropanes formed determines the outcome of the process.
Collapse
Affiliation(s)
- Armands Kazia
- Latvian Institute of Organic Synthesis, Aizkraukles 21, Riga LV-1006, Latvia.
| | | | | | | |
Collapse
|
9
|
Melngaile R, Sperga A, Baldridge KK, Veliks J. Diastereoselective Monofluorocyclopropanation Using Fluoromethylsulfonium Salts. Org Lett 2019; 21:7174-7178. [PMID: 31433191 DOI: 10.1021/acs.orglett.9b02867] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Diarylfluoromethylsulfonium salts, alternatives to freons or advanced fluorinated building blocks, are bench stable and easy-to-use sources of direct fluoromethylene (:CHF) transfer to alkenes. These salts enabled development of a trans-selective monofluorinated Johnson-Corey-Chaykovsky reaction with vinyl sulfones or vinyl sulfonamides to access synthetically challenging monofluorocyclopropane scaffolds. The described method offers rapid access to monofluorinated cyclopropane building blocks with further functionalization opportunities to deliver more complex synthetic targets diastereoselectively.
Collapse
Affiliation(s)
- Renate Melngaile
- Latvian Institute of Organic Synthesis, Aizkraukles 21, LV-1006 Riga, Latvia
| | - Arturs Sperga
- Latvian Institute of Organic Synthesis, Aizkraukles 21, LV-1006 Riga, Latvia
| | - Kim K Baldridge
- School of Pharmaceutical Science and Technology, Tianjin University, 92 Weijin Road, Nankai District, Tianjin 300072, China
| | - Janis Veliks
- Latvian Institute of Organic Synthesis, Aizkraukles 21, LV-1006 Riga, Latvia
| |
Collapse
|
10
|
Colella M, Tota A, Großjohann A, Carlucci C, Aramini A, Sheikh NS, Degennaro L, Luisi R. Straightforward chemo- and stereoselective fluorocyclopropanation of allylic alcohols: exploiting the electrophilic nature of the not so elusive fluoroiodomethyllithium. Chem Commun (Camb) 2019; 55:8430-8433. [PMID: 31259351 DOI: 10.1039/c9cc03394g] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An unprecedented direct fluorocyclopropanation of allylic alcohols is reported. This simple method involves the not so elusive fluoroiodomethyllithium, a carbenoidic intermediate that under the developed conditions discloses its electrophilic nature. Gratifyingly, the reaction turned out to be highly chemo- and stereoselective, and DFT calculations provided insights into the structure and nature of this new type of carbenoid.
Collapse
Affiliation(s)
- Marco Colella
- Department of Pharmacy - Drug Sciences, University of Bari, "A. Moro" Via E. Orabona 4, 70125 Bari, Italy.
| | - Arianna Tota
- Department of Pharmacy - Drug Sciences, University of Bari, "A. Moro" Via E. Orabona 4, 70125 Bari, Italy.
| | - Angela Großjohann
- Department of Pharmacy - Drug Sciences, University of Bari, "A. Moro" Via E. Orabona 4, 70125 Bari, Italy.
| | - Claudia Carlucci
- Department of Pharmacy - Drug Sciences, University of Bari, "A. Moro" Via E. Orabona 4, 70125 Bari, Italy.
| | - Andrea Aramini
- Department of Discovery Dompé Farmaceutici S.p.A., Via Campo di Pile, L'Aquila 67100, Italy
| | - Nadeem S Sheikh
- Department of Chemistry, College of Science, King Faisal University, P. O. Box 380, Al-Ahsa 31982, Saudi Arabia.
| | - Leonardo Degennaro
- Department of Pharmacy - Drug Sciences, University of Bari, "A. Moro" Via E. Orabona 4, 70125 Bari, Italy.
| | - Renzo Luisi
- Department of Pharmacy - Drug Sciences, University of Bari, "A. Moro" Via E. Orabona 4, 70125 Bari, Italy.
| |
Collapse
|
11
|
Huo H, A R, Gong Y. Formal [3 + 3] Cycloaddition Reactions between Electron-Deficient Cyclopropenes and Hydrazones: A Route to Alkyl 1,4,5,6-Tetrahydropyridazine-3-carboxylates. J Org Chem 2019; 84:2093-2101. [DOI: 10.1021/acs.joc.8b03105] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Affiliation(s)
- Hengrui Huo
- School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, 1037 Luoyu Road, Wuhan 430074, China
| | - Runa A
- School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, 1037 Luoyu Road, Wuhan 430074, China
| | - Yuefa Gong
- School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, 1037 Luoyu Road, Wuhan 430074, China
| |
Collapse
|
12
|
Maslivetc VA, Frolova LV, Rogelj S, Maslivetc AA, Rubina M, Rubin M. Metal-Templated Assembly of Cyclopropane-Fused Diazepanones and Diazecanones via exo- trig Nucleophilic Cyclization of Cyclopropenes with Tethered Carbamates. J Org Chem 2018; 83:13743-13753. [PMID: 30354138 DOI: 10.1021/acs.joc.8b02062] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
A strain-release-driven, cation-templated nucleophilic 7- and 8- exo-trig-cyclization of tethered Boc-protected amines to cyclopropenes is described. The featured reaction proceeds in diastereo- and regioselective fashion and allows for preparation of the corresponding 2,5-diazabicyclo[5.1.0]octan-6-ones and 2,6-diazabicyclo[6.1.0]nonan-7-ones as sole products in high yields. Preliminary studies on anticancer activities of these novel cyclopropane-fused medium heterocycles were performed.
Collapse
Affiliation(s)
- Vladimir A Maslivetc
- Department of Chemistry , University of Kansas , 1567 Irving Hill Road , Lawrence , Kansas 66045 , United States
| | - Liliya V Frolova
- Departments of Chemistry and Biology , New Mexico Institute of Mining and Technology , Socorro , New Mexico 87801 , United States
| | - Snezna Rogelj
- Departments of Chemistry and Biology , New Mexico Institute of Mining and Technology , Socorro , New Mexico 87801 , United States
| | - Anna A Maslivetc
- Department of Chemistry , University of Kansas , 1567 Irving Hill Road , Lawrence , Kansas 66045 , United States
| | - Marina Rubina
- Department of Chemistry , University of Kansas , 1567 Irving Hill Road , Lawrence , Kansas 66045 , United States
| | - Michael Rubin
- Department of Chemistry , University of Kansas , 1567 Irving Hill Road , Lawrence , Kansas 66045 , United States.,Department of Chemistry , North Caucasus Federal University , 1a Pushkin Street , Stavropol 355009 , Russian Federation
| |
Collapse
|
13
|
Maslivetc VA, Turner DN, McNair KN, Frolova L, Rogelj S, Maslivetc AA, Aksenov NA, Rubina M, Rubin M. Desymmetrization of Cyclopropenes via the Potassium-Templated Diastereoselective 7- exo- trig Cycloaddition of Tethered Amino Alcohols toward Enantiopure Cyclopropane-Fused Oxazepanones with Antimycobacterial Activity. J Org Chem 2018; 83:5650-5664. [PMID: 29696970 DOI: 10.1021/acs.joc.8b00640] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
A strain-release-driven, cation-templated intramolecular nucleophilic addition of tethered alkoxides to prochiral cyclopropenes is described. Employment of chiral β- and γ-amino alkoxides allowed for highly diastereoselective assembly of a small series of enantiopure cyclopropane-fused oxazepanones. It was shown that the chiral center at C-4 plays a crucial role in controlling desymmetrization of the cyclopropenyl moiety, instigated by a profound potassium-templated effect. The preliminary biological activities of the new cyclopropane-fused medium heterocycles against Gram-positive bacteria, Gram-negative bacteria, mycobacteria, cancer cells, and fungus were evaluated.
Collapse
Affiliation(s)
- Vladimir A Maslivetc
- Department of Chemistry , University of Kansas , 1251 Wescoe Hall Drive , Lawrence , Kansas 66045-7582 , United States
| | - Danielle N Turner
- Departments of Chemistry and Biology , New Mexico Institute of Mining and Technology , Socorro , New Mexico 87801 , United States
| | - Kimberly N McNair
- Departments of Chemistry and Biology , New Mexico Institute of Mining and Technology , Socorro , New Mexico 87801 , United States
| | - Liliya Frolova
- Departments of Chemistry and Biology , New Mexico Institute of Mining and Technology , Socorro , New Mexico 87801 , United States
| | - Snezna Rogelj
- Departments of Chemistry and Biology , New Mexico Institute of Mining and Technology , Socorro , New Mexico 87801 , United States
| | - Anna A Maslivetc
- Department of Chemistry , University of Kansas , 1251 Wescoe Hall Drive , Lawrence , Kansas 66045-7582 , United States
| | - Nicolai A Aksenov
- Department of Chemistry , North Caucasus Federal University , 1a Pushkin St. , Stavropol 355009 , Russian Federation
| | - Marina Rubina
- Department of Chemistry , University of Kansas , 1251 Wescoe Hall Drive , Lawrence , Kansas 66045-7582 , United States
| | - Michael Rubin
- Department of Chemistry , University of Kansas , 1251 Wescoe Hall Drive , Lawrence , Kansas 66045-7582 , United States.,Department of Chemistry , North Caucasus Federal University , 1a Pushkin St. , Stavropol 355009 , Russian Federation
| |
Collapse
|
14
|
Maslivetc V, Barrett C, Aksenov NA, Rubina M, Rubin M. Intramolecular nucleophilic addition of carbanions generated from N-benzylamides to cyclopropenes. Org Biomol Chem 2018; 16:285-294. [PMID: 29242861 PMCID: PMC5755969 DOI: 10.1039/c7ob02068f] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
An unusual reaction is described, involving a formal intramolecular nucleophilic substitution of bromocyclopropanes with nitrogen ylides generated in situ from N-benzyl carboxamides. It is shown that this reaction involves cyclopropene intermediates and allows for the facile and expeditious preparation of 3-azabicyclo[3.1.0]hexan-2-one scaffolds.
Collapse
Affiliation(s)
- Vladimir Maslivetc
- Department of Chemistry, University of Kansas, 1251 Wescoe Hall Dr., Lawrence, KS 66045-7582, USA.
| | | | | | | | | |
Collapse
|
15
|
Fustero S, Sedgwick DM, Román R, Barrio P. Recent advances in the synthesis of functionalised monofluorinated compounds. Chem Commun (Camb) 2018; 54:9706-9725. [DOI: 10.1039/c8cc05181j] [Citation(s) in RCA: 53] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Over the past few years, we have tackled the synthesis of interesting monofluorinated organic molecules, such as: dihydronaphthalene derivatives, β-fluoro sulfones and related carbonyl compounds, fluorohydrins and allylic alcohols.
Collapse
Affiliation(s)
- Santos Fustero
- Departamento de Química Orgánica
- Universidad de Valencia
- E-46100 Burjassot
- Spain
- Laboratorio de Moléculas Orgánicas
| | - Daniel M. Sedgwick
- Departamento de Química Orgánica
- Universidad de Valencia
- E-46100 Burjassot
- Spain
- Laboratorio de Moléculas Orgánicas
| | - Raquel Román
- Laboratorio de Moléculas Orgánicas
- Centro de Investigación Príncipe Felipe
- E-46012 Valencia
- Spain
| | - Pablo Barrio
- Departamento de Química Orgánica
- Universidad de Valencia
- E-46100 Burjassot
- Spain
- Laboratorio de Moléculas Orgánicas
| |
Collapse
|
16
|
Li H, Zhu Y, Lu D, Gong Y. Regioselective addition of phosphites to acyl cyclopropanes and following rearrangements: a facile access to enol phosphates. Org Biomol Chem 2018; 16:5907-5912. [DOI: 10.1039/c8ob01533c] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This work describes a novel method of preparing functionalized enol phosphates with acyl cyclopropanes through a regioselective cascade reaction.
Collapse
Affiliation(s)
- Haotian Li
- School of Chemistry and Chemical Engineering
- Huazhong University of Science and Technology
- Wuhan
- China
| | - Yuequan Zhu
- School of Chemistry and Chemical Engineering
- Huazhong University of Science and Technology
- Wuhan
- China
| | - Dengfu Lu
- School of Chemistry and Chemical Engineering
- Huazhong University of Science and Technology
- Wuhan
- China
| | - Yuefa Gong
- School of Chemistry and Chemical Engineering
- Huazhong University of Science and Technology
- Wuhan
- China
| |
Collapse
|
17
|
Tao R, Yin Y, Duan Y, Sun Y, Sun Y, Cheng F, Pan J, Lu C, Wang Y. Fe(OTf) 3 -catalyzed tandem Meyer-Schuster rearrangement/intermolecular hydroamination of 3-aryl propargyl alcohols for the synthesis of acyclic β-Aminoketones. Tetrahedron 2017. [DOI: 10.1016/j.tet.2017.02.030] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
|
18
|
Hu JH, Xu YC, Liu DD, Sun B, Yi Y, Zhang FL. Direct stereoselective construction of cyclopropane α-amino acid with contiguous quaternary centers via [4 + 2] annulation reaction. RSC Adv 2017. [DOI: 10.1039/c7ra06465a] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A direct diastereoselective synthetic approach to useful cyclopropane α-amino acid was established via base-promoted [4 + 2] annulations between o-aminobenzaldehydes and alkyl 2-aroyl-1-chlorocyclopropanecarboxylates.
Collapse
Affiliation(s)
- Jun-Hao Hu
- Department of Chemistry and Material Science
- Key Laboratory of Functional Organometallic Materials of Hunan Provincial College
- Hengyang Normal University
- Hengyang
- People's Republic of China
| | - Yun-Chao Xu
- School of Chemistry
- Chemical Engineering and Life Sciences
- Wuhan University of Technology
- Wuhan 430070
- People's Republic of China
| | - Dan-Dan Liu
- School of Chemistry
- Chemical Engineering and Life Sciences
- Wuhan University of Technology
- Wuhan 430070
- People's Republic of China
| | - Bing Sun
- School of Chemistry
- Chemical Engineering and Life Sciences
- Wuhan University of Technology
- Wuhan 430070
- People's Republic of China
| | - Ying Yi
- School of Chemistry
- Chemical Engineering and Life Sciences
- Wuhan University of Technology
- Wuhan 430070
- People's Republic of China
| | - Fang-Lin Zhang
- School of Chemistry
- Chemical Engineering and Life Sciences
- Wuhan University of Technology
- Wuhan 430070
- People's Republic of China
| |
Collapse
|
19
|
Czaban-Jóźwiak J, Loska R, Mąkosza M. Synthesis of α-Fluoro-α-nitroarylacetates via Vicarious Nucleophilic Substitution of Hydrogen. J Org Chem 2016; 81:11751-11757. [PMID: 27783510 DOI: 10.1021/acs.joc.6b02219] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Readily available ethyl chlorofluoroacetate, when treated with a strong base, forms an α-chloro-α-fluorocarbanion that adds to nitroarenes at a position ortho or para to the nitro group with formation of anionic σH adducts. Subsequent base-induced β-elimination of HCl proceeds selectively to give nitrobenzylic α-fluorocarbanions and, upon protonation, ethyl α-fluoro-α-nitroarylacetates.
Collapse
Affiliation(s)
- Justyna Czaban-Jóźwiak
- Institute of Organic Chemistry, Polish Academy of Sciences , Kasprzaka 44/52, 01-224 Warsaw, Poland
| | - Rafał Loska
- Institute of Organic Chemistry, Polish Academy of Sciences , Kasprzaka 44/52, 01-224 Warsaw, Poland
| | - Mieczysław Mąkosza
- Institute of Organic Chemistry, Polish Academy of Sciences , Kasprzaka 44/52, 01-224 Warsaw, Poland
| |
Collapse
|
20
|
Abstract
Fluorination reactions of medicinal and biologically-active compounds will be discussed. Late stage fluorination strategies of medicinal targets have recently attracted considerable attention on account of the influence that a fluorine atom can impart to targets of medicinal importance, such as modulation of lipophilicity, electronegativity, basicity and bioavailability, the latter as a consequence of membrane permeability. Therefore, the recourse to late-stage fluorine substitution on compounds with already known and relevant biological activity can provide the pharmaceutical industry with new leads with improved medicinal properties. The fluorination strategies will take into account different fluorinating reagents, either of nucleophilic or electrophilic, and of radical nature. Diverse families of organic compounds such as (hetero)aromatic rings, and aliphatic substrates (sp(3), sp(2), and sp carbon atoms) will be studied in late-stage fluorination reaction strategies.
Collapse
Affiliation(s)
- Damian E Yerien
- Departamento de Química Orgánica, Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires-CONICET, Junín 954 CP, 1113-Buenos Aires, Argentina.
| | | | | |
Collapse
|
21
|
Hu J, Wang Z, Gong Y. Regio- and Stereoselective Synthesis of Valuable Tetracyclic Compounds by Intramolecular Diels-Alder Reactions between Furan and Cyclopropene Moieties. European J Org Chem 2016. [DOI: 10.1002/ejoc.201600535] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Junhao Hu
- School of Chemistry and Chemical Engineering; Huazhong University of Science and Technology; 1037 Luoyu Road 430074 Wuhan People's Republic of China
| | - Zhenghai Wang
- School of Chemistry and Chemical Engineering; Huazhong University of Science and Technology; 1037 Luoyu Road 430074 Wuhan People's Republic of China
| | - Yuefa Gong
- School of Chemistry and Chemical Engineering; Huazhong University of Science and Technology; 1037 Luoyu Road 430074 Wuhan People's Republic of China
| |
Collapse
|
22
|
Miró J, del Pozo C, Toste FD, Fustero S. Enantioselective Palladium-Catalyzed Oxidative β,β-Fluoroarylation of α,β-Unsaturated Carbonyl Derivatives. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201603046] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Affiliation(s)
- Javier Miró
- Departamento de Química Orgánica; Universidad de Valencia; 46100 Burjassot Spain
| | - Carlos del Pozo
- Departamento de Química Orgánica; Universidad de Valencia; 46100 Burjassot Spain
| | - F. Dean Toste
- Department of Chemistry; University of California; Berkeley CA 94720 USA
| | - Santos Fustero
- Departamento de Química Orgánica; Universidad de Valencia; 46100 Burjassot Spain
- Laboratorio de Moléculas Orgánicas; Centro de Investigación Príncipe Felipe; 46012 Valencia Spain
| |
Collapse
|
23
|
Miró J, Del Pozo C, Toste FD, Fustero S. Enantioselective Palladium-Catalyzed Oxidative β,β-Fluoroarylation of α,β-Unsaturated Carbonyl Derivatives. Angew Chem Int Ed Engl 2016; 55:9045-9. [PMID: 27272390 DOI: 10.1002/anie.201603046] [Citation(s) in RCA: 57] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2016] [Revised: 04/30/2016] [Indexed: 12/21/2022]
Abstract
The site-selective palladium-catalyzed three-component coupling of deactivated alkenes, arylboronic acids, and N-fluorobenzenesulfonimide is disclosed herein. The developed methodology establishes a general, modular, and step-economical approach to the stereoselective β-fluorination of α,β-unsaturated systems.
Collapse
Affiliation(s)
- Javier Miró
- Departamento de Química Orgánica, Universidad de Valencia, 46100, Burjassot, Spain
| | - Carlos Del Pozo
- Departamento de Química Orgánica, Universidad de Valencia, 46100, Burjassot, Spain.
| | - F Dean Toste
- Department of Chemistry, University of California, Berkeley, CA, 94720, USA.
| | - Santos Fustero
- Departamento de Química Orgánica, Universidad de Valencia, 46100, Burjassot, Spain. .,Laboratorio de Moléculas Orgánicas, Centro de Investigación Príncipe Felipe, 46012, Valencia, Spain.
| |
Collapse
|
24
|
Zhu Y, Gong Y. Highly regioselective tandem formal substitution and decarboxylation of 2-acyl-1-chlorocyclopropanecarboxylates with sodium sulfinates. Tetrahedron 2016. [DOI: 10.1016/j.tet.2016.04.062] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
|
25
|
Huang Z, Gong Y. A straightforward sequence to alkyl 1H-pyrrole-2,5-dicarboxylates starting from acylhydrazono esters and alkyl 2-aroyl-1-chlorocyclopropanecarboxylates. RSC Adv 2016. [DOI: 10.1039/c6ra01829g] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Abstract
A domino reaction between alkyl 2-aroyl-1-chlorocyclopropanecarboxylates 1 and acylhydrazono esters 2 proceeded readily in the presence of Cs2CO3 to afford 2,3,5-trifunctionalized pyrroles in good to excellent yields.
Collapse
Affiliation(s)
- Zhimei Huang
- School of Chemistry and Chemical Engineering
- Huazhong University of Science and Technology
- Wuhan 430074
- People’s Republic of China
| | - Yuefa Gong
- School of Chemistry and Chemical Engineering
- Huazhong University of Science and Technology
- Wuhan 430074
- People’s Republic of China
| |
Collapse
|
26
|
Nishikata T. Alkyl Radicals Controlled by Cu-Amine Catalyst System for the Development of Diverse Reactions. J SYN ORG CHEM JPN 2016. [DOI: 10.5059/yukigoseikyokaishi.74.2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
|
27
|
Hu J, Liu Y, Gong Y. Direct Construction of the 9H-Pyrrolo[1,2-a]azepin-9-amine Skeletonvia[4+3] Annulation of Alkyl 2-Aroyl-1-chlorocyclo- propanecarboxylates. Adv Synth Catal 2015. [DOI: 10.1002/adsc.201500376] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
|
28
|
Zhu Q, Ji D, Liang T, Wang X, Xu Y. Efficient Palladium-Catalyzed C-H Fluorination of C(sp3)-H Bonds: Synthesis of β-Fluorinated Carboxylic Acids. Org Lett 2015; 17:3798-801. [PMID: 26172446 DOI: 10.1021/acs.orglett.5b01774] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
A novel and facile process for direct fluorination of unactivated C(sp3)-H bonds at the β position of carboxylic acids was accomplished by a palladium(II)-catalyzed C-H activation. The addition of Ag2O and pivalic acid was found to be crucial for the success of this transformation. This reaction provides a versatile strategy for the synthesis of β-fluorinated carboxylic acids.
Collapse
Affiliation(s)
- Qihua Zhu
- †State Key Laboratory of Natural Medicines and ‡Jiangsu Key Laboratory of Drug Design and Optimization, Department of Medicinal Chemistry, China Pharmaceutical University, Nanjing 210009, China
| | - Dezhong Ji
- †State Key Laboratory of Natural Medicines and ‡Jiangsu Key Laboratory of Drug Design and Optimization, Department of Medicinal Chemistry, China Pharmaceutical University, Nanjing 210009, China
| | - Tingting Liang
- †State Key Laboratory of Natural Medicines and ‡Jiangsu Key Laboratory of Drug Design and Optimization, Department of Medicinal Chemistry, China Pharmaceutical University, Nanjing 210009, China
| | - Xueyan Wang
- †State Key Laboratory of Natural Medicines and ‡Jiangsu Key Laboratory of Drug Design and Optimization, Department of Medicinal Chemistry, China Pharmaceutical University, Nanjing 210009, China
| | - Yungen Xu
- †State Key Laboratory of Natural Medicines and ‡Jiangsu Key Laboratory of Drug Design and Optimization, Department of Medicinal Chemistry, China Pharmaceutical University, Nanjing 210009, China
| |
Collapse
|
29
|
Champagne PA, Desroches J, Hamel JD, Vandamme M, Paquin JF. Monofluorination of Organic Compounds: 10 Years of Innovation. Chem Rev 2015; 115:9073-174. [PMID: 25854146 DOI: 10.1021/cr500706a] [Citation(s) in RCA: 674] [Impact Index Per Article: 74.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Pier Alexandre Champagne
- Canada Research Chair in Organic and Medicinal Chemistry, CGCC, PROTEO, Département de Chimie, Université Laval , 1045 Avenue de la Médecine, Québec (QC), Canada G1V 0A6
| | - Justine Desroches
- Canada Research Chair in Organic and Medicinal Chemistry, CGCC, PROTEO, Département de Chimie, Université Laval , 1045 Avenue de la Médecine, Québec (QC), Canada G1V 0A6
| | - Jean-Denys Hamel
- Canada Research Chair in Organic and Medicinal Chemistry, CGCC, PROTEO, Département de Chimie, Université Laval , 1045 Avenue de la Médecine, Québec (QC), Canada G1V 0A6
| | - Mathilde Vandamme
- Canada Research Chair in Organic and Medicinal Chemistry, CGCC, PROTEO, Département de Chimie, Université Laval , 1045 Avenue de la Médecine, Québec (QC), Canada G1V 0A6
| | - Jean-François Paquin
- Canada Research Chair in Organic and Medicinal Chemistry, CGCC, PROTEO, Département de Chimie, Université Laval , 1045 Avenue de la Médecine, Québec (QC), Canada G1V 0A6
| |
Collapse
|
30
|
Hu J, Zhang M, Gong Y. Cycloaddition Reactions of Alkyl Cyclopropenecarboxylates Generated in situ with Nitrones: Construction of Substituted Pyrroles and 1,2-Oxazinanes. European J Org Chem 2015. [DOI: 10.1002/ejoc.201403551] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
|
31
|
Huang Z, Hu J, Gong Y. Formation and aromatization of strained bicyclic pyrazolidines via tandem reaction of alkyl 2-aroyl-1-chlorocyclopropanecarboxylates with acylhydrazones. Org Biomol Chem 2015; 13:8561-6. [DOI: 10.1039/c5ob01199j] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
The formation and aromatization of strained bicyclic pyrazolidines.
Collapse
Affiliation(s)
- Zhimei Huang
- School of Chemistry and Chemical Engineering
- Huazhong University of Science and Technology
- Wuhan 430074
- People's Republic of China
| | - Junhao Hu
- School of Chemistry and Chemical Engineering
- Huazhong University of Science and Technology
- Wuhan 430074
- People's Republic of China
| | - Yuefa Gong
- School of Chemistry and Chemical Engineering
- Huazhong University of Science and Technology
- Wuhan 430074
- People's Republic of China
| |
Collapse
|
32
|
Nishikata T, Noda Y, Fujimoto R, Ishikawa S. A facile formal [2+1] cycloaddition of styrenes with alpha-bromocarbonyls catalyzed by copper: efficient synthesis of donor–acceptor cyclopropanes. Chem Commun (Camb) 2015; 51:12843-6. [DOI: 10.1039/c5cc04697a] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
The reaction of alpha-bromocarbonyls and styrenes underwent a formal [2+1] cycloaddition to produce donor–acceptor cyclopropanes.
Collapse
Affiliation(s)
- Takashi Nishikata
- Graduate School of Science and Engineering
- Yamaguchi University 2-16-1 Tokiwadai
- Ube
- Japan
| | - Yushi Noda
- Graduate School of Science and Engineering
- Yamaguchi University 2-16-1 Tokiwadai
- Ube
- Japan
| | - Ryo Fujimoto
- Graduate School of Science and Engineering
- Yamaguchi University 2-16-1 Tokiwadai
- Ube
- Japan
| | - Shingo Ishikawa
- Graduate School of Science and Engineering
- Yamaguchi University 2-16-1 Tokiwadai
- Ube
- Japan
| |
Collapse
|
33
|
Zhu Y, Gong Y. Construction of 2-Pyrone Skeleton via Domino Sequence between 2-Acyl-1-Chlorocyclopropanecarboxylate and Amines. J Org Chem 2014; 80:490-8. [DOI: 10.1021/jo502502z] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Yuequan Zhu
- School of Chemistry and Chemical
Engineering, Huazhong University of Science and Technology, 1037
Luoyu Road, Wuhan 430074, People’s Republic of China
| | - Yuefa Gong
- School of Chemistry and Chemical
Engineering, Huazhong University of Science and Technology, 1037
Luoyu Road, Wuhan 430074, People’s Republic of China
| |
Collapse
|
34
|
Ošeka M, Noole A, Žari S, Öeren M, Järving I, Lopp M, Kanger T. Asymmetric Diastereoselective Synthesis of Spirocyclopropane Derivatives of Oxindole. European J Org Chem 2014. [DOI: 10.1002/ejoc.201402061] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
|
35
|
Zhang M, Guo J, Gong Y. Highly Regioselective Cascade Formal Nucleophilic Substitution and Aldol Condensation of 2-Aroyl-1-chlorocyclopropanecarboxylic Esters. European J Org Chem 2014. [DOI: 10.1002/ejoc.201301866] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
|
36
|
Zhang M, Luo F, Gong Y. Stereoselective Cascade Formal Nucleophilic Substitution and Mannich Reaction of Ethyl 2-Aroyl-1-chlorocyclopropanecarboxylates. J Org Chem 2014; 79:1335-43. [DOI: 10.1021/jo402739f] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- Min Zhang
- School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, 1037 Luoyu Road, Wuhan 430074, People’s Republic of China
| | - Fan Luo
- School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, 1037 Luoyu Road, Wuhan 430074, People’s Republic of China
| | - Yuefa Gong
- School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, 1037 Luoyu Road, Wuhan 430074, People’s Republic of China
| |
Collapse
|
37
|
Zhu Y, Zhang M, Yuan H, Gong Y. Synthesis of functionalized fulvenes: [3 + 2] annulation of ethyl α-chlorocyclopropaneformates with 1,3-dicarbonyl compounds. Org Biomol Chem 2014; 12:8828-31. [DOI: 10.1039/c4ob01973c] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An efficient method is reported to produce acidic multi-substituted fulvenes at high yields (up to 94%) through the base-promoted [3 + 2] annulation reaction of ethyl α-chlorocyclopropaneformates with 1,3-dicarbonyl compounds.
Collapse
Affiliation(s)
- Yuequan Zhu
- School of Chemistry and Chemical Engineering
- Huazhong University of Science and Technology
- Wuhan 430074, China
| | - Min Zhang
- School of Chemistry and Chemical Engineering
- Huazhong University of Science and Technology
- Wuhan 430074, China
| | - Hongling Yuan
- School of Chemistry and Chemical Engineering
- Huazhong University of Science and Technology
- Wuhan 430074, China
| | - Yuefa Gong
- School of Chemistry and Chemical Engineering
- Huazhong University of Science and Technology
- Wuhan 430074, China
| |
Collapse
|