1
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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.
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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
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2
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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.
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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.
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3
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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.
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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.
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4
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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.
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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.
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5
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Lodhi R, Prakash M, Samanta S. Diastereoselective desymmetrization reactions of prochiral para-quinamines with cyclopropenes generated in situ: access to fused hydroindol-5-one scaffolds. Org Biomol Chem 2021; 19:7129-7133. [PMID: 34369544 DOI: 10.1039/d1ob01322j] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Interesting desymmetric [3 + 2] annulation reactions between p-quinamines as prochiral N-donors and 2-aroyl-1-chlorocyclopropanecarboxylates facilitated by a base are reported. This successive double Michael reaction delivered a unique class of cyclopropane-fused hydoindol-5-one frameworks, each having four contiguous stereogenic centers, with three of them being fully substituted. Moreover, this method was found to provide acceptable chemical yields with promising diastereoselectivities (dr of up to ≤95 : 5) and to work with a variety of substrates. Importantly, a polycyclic tacrine analogue used to treat Alzheimer's disease was synthesized using our developed method.
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Affiliation(s)
- Rajni Lodhi
- Department of Chemistry, Indian Institute of Technology Indore, Simrol, 453552, India.
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6
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Prakash M, Lodhi R, Samanta S. Substrate-Controlled Domino Reaction of N-Sulfonyl Ketimines with 2-Aroyl-1-chlorocyclopropanecarboxylates: Access to Cyclopenta[c]chromenes and Benzo[f]cyclopenta[d][1,2]thiazepine Dioxides. J Org Chem 2021; 86:6721-6733. [DOI: 10.1021/acs.joc.1c00459] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Meher Prakash
- Department of Chemistry, Indian Institute of Technology Indore, Simrol, Indore, Madhya Pradesh 453552, India
| | - Rajni Lodhi
- Department of Chemistry, Indian Institute of Technology Indore, Simrol, Indore, Madhya Pradesh 453552, India
| | - Sampak Samanta
- Department of Chemistry, Indian Institute of Technology Indore, Simrol, Indore, Madhya Pradesh 453552, India
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7
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Iioka R, Yorozu K, Sakai Y, Kawai R, Hatae N, Takashima K, Tanabe G, Wasada H, Yoshimatsu M. Synthesis of Azepino[1,2‐
a
]indole‐10‐amines via [6+1] Annulation of Ynenitriles with Reformatsky Reagent. European J Org Chem 2021. [DOI: 10.1002/ejoc.202100021] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Ryoya Iioka
- Department of Chemistry Faculty of Education Gifu University Yanagido 1–1 501-1193 Gifu Japan
| | - Kohei Yorozu
- Department of Chemistry Faculty of Education Gifu University Yanagido 1–1 501-1193 Gifu Japan
| | - Yoko Sakai
- Department of Chemistry Faculty of Education Gifu University Yanagido 1–1 501-1193 Gifu Japan
| | - Rika Kawai
- Department of Chemistry Faculty of Education Gifu University Yanagido 1–1 501-1193 Gifu Japan
| | - Noriyuki Hatae
- Faculty of Pharmaceutical Sciences Yokohama University of Pharmacy 601 Matano, Totsuka-ku 245-0066 Yokohama Kanagawa Japan
| | - Katsuki Takashima
- Faculty of Pharmacy Kinki University 3-4-1 Kowakae 577-8502 Higashi-osaka Osaka Japan
| | - Genzoh Tanabe
- Faculty of Pharmacy Kinki University 3-4-1 Kowakae 577-8502 Higashi-osaka Osaka Japan
| | - Hiroaki Wasada
- Department of Chemistry Faculty of Regional Study Gifu University Yanagido 1–1 501-1193 Gifu Japan
| | - Mitsuhiro Yoshimatsu
- Department of Chemistry Faculty of Education Gifu University Yanagido 1–1 501-1193 Gifu Japan
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8
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Lam H, Lautens M, Abel-Snape X, Köllen MF. Recent Advances in Transition-Metal-Free (4+3)-Annulations. SYNTHESIS-STUTTGART 2021. [DOI: 10.1055/s-0040-1706023] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Abstract(4+3)-Annulations are incredibly versatile reactions which combine a 4-atom synthon and a 3-atom synthon to form both 7-membered carbocycles as well as heterocycles. We have previously reviewed transition-metal-catalyzed (4+3)-annulations. In this review, we will cover examples involving bases, NHCs, phosphines, Lewis and Brønsted acids as well as some rare examples of boronic acid catalysis and photocatalysis. In analogy to our previous review, we exclude annulations involving cyclic dienes like furan, pyrrole, cyclohexadiene or cyclopentadiene, as Chiu, Harmata, Fernándes and others have recently published reviews encompassing such substrates. We will however discuss the recent additions (2010–2020) to the literature on (4+3)-annulations involving other types of 4-atom-synthons.1 Introduction2 Bases3 Annulations Using N-Heterocyclic Carbenes3.1 N-Heterocyclic Carbenes (NHCs)3.2 N-Heterocyclic Carbenes and Base Dual-Activation4 Phosphines5 Acids5.1 Lewis Acids5.2 Brønsted Acids6 Boronic Acid Catalysis and Photocatalysis7 Conclusion
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Affiliation(s)
- Heather Lam
- Davenport Research Laboratories, Department of Chemistry, University of Toronto
| | - Mark Lautens
- Davenport Research Laboratories, Department of Chemistry, University of Toronto
| | - Xavier Abel-Snape
- Davenport Research Laboratories, Department of Chemistry, University of Toronto
| | - Martin F. Köllen
- Ludwig-Maximilians-Universität München, Department Chemie und Biochemie
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9
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Yang W, Huang Z, Liu Y, Yu X, Deng W. Highly Regio‐, Diastereo‐, and Enantioselective Assembly of Azepino[2,3‐
b
]indoles
via
Palladium‐Catalyzed
[4 + 3] Cycloaddition
†. CHINESE J CHEM 2020. [DOI: 10.1002/cjoc.202000264] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Affiliation(s)
- Wu‐Lin Yang
- Shanghai Key Laboratory of New Drug Design and School of Pharmacy, East China University of Science and Technology 130 Meilong Road Shanghai 200237 China
| | - Zesheng Huang
- Shanghai Key Laboratory of New Drug Design and School of Pharmacy, East China University of Science and Technology 130 Meilong Road Shanghai 200237 China
| | - Yang‐Zi Liu
- Shanghai Key Laboratory of New Drug Design and School of Pharmacy, East China University of Science and Technology 130 Meilong Road Shanghai 200237 China
| | - Xingxin Yu
- Shanghai Key Laboratory of New Drug Design and School of Pharmacy, East China University of Science and Technology 130 Meilong Road Shanghai 200237 China
| | - Wei‐Ping Deng
- Shanghai Key Laboratory of New Drug Design and School of Pharmacy, East China University of Science and Technology 130 Meilong Road Shanghai 200237 China
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Department of Chemistry, Zhejiang Normal University Jinhua Zhejiang 321004 China
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10
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Joshi DR, Seo Y, Heo Y, Park SH, Lee Y, Namkung W, Kim I. Domino [4 + 2] Annulation Access to Quinone-Indolizine Hybrids: Anticancer N-Fused Polycycles. J Org Chem 2020; 85:10994-11005. [PMID: 32674567 DOI: 10.1021/acs.joc.0c01291] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
A highly efficient synthetic route to new quinone-indolizine hybrids was accomplished from quinones and N-substituted pyrrole-2-carboxaldehydes via a domino Michael addition-aldol condensation-aromatization sequence through which the central pyridine ring was constructed in atom-economical and environment-friendly manner. Post modification of the resulting products was also demonstrated, enabling further expansion of this heterocyclic chemical space. Biological evaluation of the quinone-indolizine hybrids revealed potent anticancer effects in human prostate adenocarcinoma cells (PC-3) and oral adenosquamous carcinoma cells (CAL-27).
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Affiliation(s)
- Dirgha Raj Joshi
- College of Pharmacy and Yonsei Institute of Pharmaceutical Sciences, Yonsei University, 85 Songdogwahak-ro, Yeonsu-gu, Incheon 21983, Republic of Korea
| | - Yohan Seo
- College of Pharmacy and Yonsei Institute of Pharmaceutical Sciences, Yonsei University, 85 Songdogwahak-ro, Yeonsu-gu, Incheon 21983, Republic of Korea
| | - Yunkyung Heo
- College of Pharmacy and Yonsei Institute of Pharmaceutical Sciences, Yonsei University, 85 Songdogwahak-ro, Yeonsu-gu, Incheon 21983, Republic of Korea
| | - So-Hyeon Park
- Graduate Program of Industrial Pharmaceutical Science, Yonsei University, Incheon 21983, Republic of Korea
| | - Yechan Lee
- Graduate Program of Industrial Pharmaceutical Science, Yonsei University, Incheon 21983, Republic of Korea
| | - Wan Namkung
- College of Pharmacy and Yonsei Institute of Pharmaceutical Sciences, Yonsei University, 85 Songdogwahak-ro, Yeonsu-gu, Incheon 21983, Republic of Korea.,Interdisciplinary Program of Integrated OMICS for Biomedical Science Graduate School, Yonsei University, Seoul, 03722, Republic of Korea
| | - Ikyon Kim
- College of Pharmacy and Yonsei Institute of Pharmaceutical Sciences, Yonsei University, 85 Songdogwahak-ro, Yeonsu-gu, Incheon 21983, Republic of Korea
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11
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Selvaraj K, Chauhan S, Sandeep K, Swamy KCK. Advances in [4+3]‐Annulation/Cycloaddition Reactions Leading to Homo‐ and Heterocycles with Seven‐Membered Rings. Chem Asian J 2020; 15:2380-2402. [DOI: 10.1002/asia.202000545] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2020] [Revised: 06/06/2020] [Indexed: 12/18/2022]
Affiliation(s)
- Karuppu Selvaraj
- School of ChemistryUniversity of Hyderabad Hyderabad-500046 Telangana India
| | - Sachin Chauhan
- School of ChemistryUniversity of Hyderabad Hyderabad-500046 Telangana India
| | - K. Sandeep
- School of ChemistryUniversity of Hyderabad Hyderabad-500046 Telangana India
| | - K. C. Kumara Swamy
- School of ChemistryUniversity of Hyderabad Hyderabad-500046 Telangana India
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12
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Li J, Zhang S, Zou H. One-pot chemoselective domino condensation to form a fused pyrrolo–pyrazino–indolizine framework: discovery of novel AIE molecules. Org Chem Front 2020. [DOI: 10.1039/d0qo00274g] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
A fused pyrrolo–pyrazino–indolizine (5-6-6-5) framework with excellent AIE properties and application in living cell imaging was constructed via chemoselective domino condensation.
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Affiliation(s)
- Jinbiao Li
- College of Pharmaceutical Sciences
- Zhejiang University
- Hangzhou
- P. R. China
| | - Shuaizhong Zhang
- College of Pharmaceutical Sciences
- Zhejiang University
- Hangzhou
- P. R. China
| | - Hongbin Zou
- College of Pharmaceutical Sciences
- Zhejiang University
- Hangzhou
- P. R. China
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13
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Liu Y, Wang Z, Huang Z, Zheng X, Yang W, Deng W. Palladium‐Catalyzed Asymmetric [4+3] Cyclization of Trimethylenemethane: Regio‐, Diastereo‐, and Enantioselective Construction of Benzofuro[3,2‐
b
]azepine Skeletons. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201909158] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Yang‐Zi Liu
- School of Pharmacy and Shanghai Key Laboratory of New Drug Design East China University of Science and Technology 130 Meilong Road Shanghai 200237 P. R. China
| | - Zhongao Wang
- School of Pharmacy and Shanghai Key Laboratory of New Drug Design East China University of Science and Technology 130 Meilong Road Shanghai 200237 P. R. China
| | - Zesheng Huang
- School of Pharmacy and Shanghai Key Laboratory of New Drug Design East China University of Science and Technology 130 Meilong Road Shanghai 200237 P. R. China
| | - Xing Zheng
- School of Pharmacy and Shanghai Key Laboratory of New Drug Design East China University of Science and Technology 130 Meilong Road Shanghai 200237 P. R. China
| | - Wu‐Lin Yang
- School of Pharmacy and Shanghai Key Laboratory of New Drug Design East China University of Science and Technology 130 Meilong Road Shanghai 200237 P. R. China
| | - Wei‐Ping Deng
- School of Pharmacy and Shanghai Key Laboratory of New Drug Design East China University of Science and Technology 130 Meilong Road Shanghai 200237 P. R. China
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14
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Liu Y, Wang Z, Huang Z, Zheng X, Yang W, Deng W. Palladium‐Catalyzed Asymmetric [4+3] Cyclization of Trimethylenemethane: Regio‐, Diastereo‐, and Enantioselective Construction of Benzofuro[3,2‐
b
]azepine Skeletons. Angew Chem Int Ed Engl 2019; 59:1238-1242. [DOI: 10.1002/anie.201909158] [Citation(s) in RCA: 51] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2019] [Indexed: 12/11/2022]
Affiliation(s)
- Yang‐Zi Liu
- School of Pharmacy and Shanghai Key Laboratory of New Drug Design East China University of Science and Technology 130 Meilong Road Shanghai 200237 P. R. China
| | - Zhongao Wang
- School of Pharmacy and Shanghai Key Laboratory of New Drug Design East China University of Science and Technology 130 Meilong Road Shanghai 200237 P. R. China
| | - Zesheng Huang
- School of Pharmacy and Shanghai Key Laboratory of New Drug Design East China University of Science and Technology 130 Meilong Road Shanghai 200237 P. R. China
| | - Xing Zheng
- School of Pharmacy and Shanghai Key Laboratory of New Drug Design East China University of Science and Technology 130 Meilong Road Shanghai 200237 P. R. China
| | - Wu‐Lin Yang
- School of Pharmacy and Shanghai Key Laboratory of New Drug Design East China University of Science and Technology 130 Meilong Road Shanghai 200237 P. R. China
| | - Wei‐Ping Deng
- School of Pharmacy and Shanghai Key Laboratory of New Drug Design East China University of Science and Technology 130 Meilong Road Shanghai 200237 P. R. China
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15
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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
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16
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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.
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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
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17
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Shao N, Li J, Zhu H, Zhang S, Zou H. Functionalized N-containing heterocyclic scaffolds derived from N-substituted pyrroles via inter- and intramolecular annulations. Tetrahedron 2018. [DOI: 10.1016/j.tet.2018.08.022] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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18
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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.
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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
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19
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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.
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Affiliation(s)
- Vladimir Maslivetc
- Department of Chemistry, University of Kansas, 1251 Wescoe Hall Dr., Lawrence, KS 66045-7582, USA.
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20
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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.
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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
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21
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Kotha S, Aswar VR, Singhal G. Synthesis of tricyclic units of indole alkaloids: Application of Fischer indolization and olefin metathesis. Tetrahedron 2017. [DOI: 10.1016/j.tet.2017.09.039] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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22
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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.
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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
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23
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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
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24
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Meyer AG, Smith JA, Hyland C, Williams CC, Bissember AC, Nicholls TP. Seven-Membered Rings. PROGRESS IN HETEROCYCLIC CHEMISTRY 2016. [DOI: 10.1016/b978-0-08-100755-6.00016-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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25
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Alnasleh BK, Rubina M, Rubin M. Templated assembly of medium cyclic ethers via exo-trig nucleophilic cyclization of cyclopropenes. Chem Commun (Camb) 2016; 52:7494-6. [PMID: 27210442 DOI: 10.1039/c6cc02178f] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
A novel method for the assembly of medium heterocycles via an intramolecular nucleophilic addition to cyclopropenes is described. The exo-trig nucleophilic cyclizations were shown to proceed very efficiently and in a highly diastereoselective fashion affording cis-fused bicyclic products possessing 7 to 10-membered medium rings; starting from a diastereomeric mixtures of bromocyclopropanes.
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Affiliation(s)
| | - Marina Rubina
- Department of Chemistry
- University of Kansas
- Lawrence
- USA
| | - Michael Rubin
- Department of Chemistry
- University of Kansas
- Lawrence
- USA
- Department of Chemistry
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