1
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Sarkar A, Mandal RD, Chakraborty N, Das AR. Cascade [4 + 1] Annulation through Activation of the C(sp 2)-H Bond Enabling Benzothiadiazinoisoindolcarboxylate, Benzothiadiazinoisoindole, and Benzothiadiazinoisoindolepyrrolidinedione as Hybrid Spiro-Heterocyclic Frameworks†. J Org Chem 2024. [PMID: 38758359 DOI: 10.1021/acs.joc.4c00366] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/18/2024]
Abstract
Two structurally distinct and biologically privileged succinimide and isoindole heteroarenes bearing benzothiadiazinedioxide motif-centered hybrid conjugates are proficiently achieved through Rh(III)-catalyzed sequential C(sp2)-H bond activation, ortho-alkenylation and finally cascade intramolecular cyclization. The significant feature of this developed protocol is that the resulting diversely decorated heterocycles contain a quaternary carbon center and this has been coursed through atypical [4 + 1] annulation ignoring the prevalent [4 + 2]-cyclization pathway and interestingly the applied coupling partners (e.g., maleimide, maleate, and styrene) to materialize the protocol functioned only as C1 synthon. Furthermore, the selective reduction strategy enables to modify the hybrid conjugate of succinimide and benzothiazine dioxide to benzothiazine dioxide-based spirocyclic isoindolopyrrolidinedione skeleton following preferential reduction of one carbonyl group of imide functionality. Overall this methodology emerges to be easily handled, versatile, time-efficient, and manifests relatively unfamiliar spiro-cyclization and good functional group tolerance so easy to grab a library of the entirely new variant of decorated hybrid spiro-heterocyclic scaffolds.
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Affiliation(s)
- Anindita Sarkar
- Department of Chemistry, University of Calcutta, Kolkata 700009, India
| | - Rahul Dev Mandal
- Department of Chemistry, University of Calcutta, Kolkata 700009, India
| | | | - Asish R Das
- Department of Chemistry, University of Calcutta, Kolkata 700009, India
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2
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Wu Y, Shi G, Liu Y, Kong Y, Wu M, Wang D, Wu X, Shang Y, He X. A rhodium-catalyzed cascade C-H activation/annulation strategy for the expeditious assembly of pyrrolidinedione-fused 1,2-benzothiazines. Org Biomol Chem 2024; 22:3523-3532. [PMID: 38606489 DOI: 10.1039/d4ob00193a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/13/2024]
Abstract
A cascade annulation strategy triggered by rhodium(III)-catalyzed C-H activation has been reported for the expeditious assembly of pyrrolidinedione-fused 1,2-benzothiazines from free NH-sulfoximines with maleimides under mild conditions. Without the need for inert atmosphere protection, a broad range of sulfoximines with maleimides were well tolerated, producing diverse fused-thiazine derivatives in moderate to good yields. Additionally, the late-stage transformation of the target product demonstrated the potential synthetic value of this protocol.
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Affiliation(s)
- Yinsong Wu
- Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based Materials (State Key Laboratory Cultivation Base), College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241000, P.R. China.
| | - Guanghao Shi
- Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based Materials (State Key Laboratory Cultivation Base), College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241000, P.R. China.
- Jiangsu Xidi Pharmaceuticals Co., Ltd, Nantong, 226000, P. R. China
| | - Yanan Liu
- Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based Materials (State Key Laboratory Cultivation Base), College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241000, P.R. China.
| | - Yangzilin Kong
- Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based Materials (State Key Laboratory Cultivation Base), College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241000, P.R. China.
| | - Mengdi Wu
- Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based Materials (State Key Laboratory Cultivation Base), College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241000, P.R. China.
| | - Demao Wang
- Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based Materials (State Key Laboratory Cultivation Base), College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241000, P.R. China.
| | - Xiaobing Wu
- Key Laboratory for Conservation and Use of Important Biological Resources of Anhui Province, College of Life Sciences, Anhui Normal University, Wuhu, Anhui 241000, P.R. China.
| | - Yongjia Shang
- Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based Materials (State Key Laboratory Cultivation Base), College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241000, P.R. China.
| | - Xinwei He
- Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based Materials (State Key Laboratory Cultivation Base), College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241000, P.R. China.
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3
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Acharya SS, Patra S, Maharana R, Dash M, Barad LM, Parida BB. Recent advances in spirocyclization of maleimides via transition-metal catalyzed C-H activation. Org Biomol Chem 2024; 22:2916-2947. [PMID: 38497106 DOI: 10.1039/d3ob01904g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/19/2024]
Abstract
In recent years, the maleimide scaffold has received a great deal of attention in C-H activation. Several types of products can be constructed using maleimides as a coupling partner. Alkylation, alkenylation, annulation, dehydrogenative annulation and spirocyclization are various reactions shown by maleimides in C-H activation. Thus, the maleimide scaffold has been extensively studied in the last few years in C-H activation owing to its unique reactivity. Among the diverse class of reactions of maleimides, spirocyclization is a less explored reaction. The spirocycles, in particular the spirosuccinimides are interesting candidates in drug discovery and materials chemistry. Therefore the method of spirocyclization of maleimides via C-H activation becomes an important strategy for the synthesis of a diverse array of spirosuccinimides. This review summarizes the reports available in this field from 2015-2023 and also highlights the scopes and prospects of this method.
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Affiliation(s)
| | - Sagarika Patra
- Department of Chemistry, Berhampur University, Bhanja Bihar, Odisha-760007, India.
| | - Rojalini Maharana
- Department of Chemistry, Berhampur University, Bhanja Bihar, Odisha-760007, India.
| | - Manaswini Dash
- Department of Chemistry, Berhampur University, Bhanja Bihar, Odisha-760007, India.
| | - Liza Mama Barad
- Department of Chemistry, Berhampur University, Bhanja Bihar, Odisha-760007, India.
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4
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Li Y, He L, Qin H, Liu Y, Yang B, Xu Z, Yang D. A Facile Ugi/Ullmann Cascade Reaction to Access Fused Indazolo-Quinoxaline Derivatives with Potent Anticancer Activity. Molecules 2024; 29:464. [PMID: 38257377 PMCID: PMC10820152 DOI: 10.3390/molecules29020464] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2023] [Revised: 01/10/2024] [Accepted: 01/16/2024] [Indexed: 01/24/2024] Open
Abstract
A facile methodology for the construction of a complex heterocycle indazolo-fused quinoxalinone has been developed via an Ugi four-component reaction (U-4CR) followed by an intramolecular Ullmann reaction. The expeditious process features an operationally simple approach, time efficiency, and a broad substrate scope. Biological activity was evaluated and demonstrated that compound 6e inhibits human colon cancer cell HCT116 proliferation with an IC50 of 2.1 μM, suggesting potential applications for developing a drug lead in medicinal chemistry.
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Affiliation(s)
- Yong Li
- College of Pharmacy, National & Local Joint Engineering Research Center of Targeted and Innovative Therapeutics, Chongqing University of Arts and Sciences, Chongqing 402160, China
- School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, China
| | - Liujun He
- College of Pharmacy, National & Local Joint Engineering Research Center of Targeted and Innovative Therapeutics, Chongqing University of Arts and Sciences, Chongqing 402160, China
| | - Hongxia Qin
- College of Pharmacy, National & Local Joint Engineering Research Center of Targeted and Innovative Therapeutics, Chongqing University of Arts and Sciences, Chongqing 402160, China
| | - Yao Liu
- College of Pharmacy, National & Local Joint Engineering Research Center of Targeted and Innovative Therapeutics, Chongqing University of Arts and Sciences, Chongqing 402160, China
| | - Binxin Yang
- College of Pharmacy, National & Local Joint Engineering Research Center of Targeted and Innovative Therapeutics, Chongqing University of Arts and Sciences, Chongqing 402160, China
| | - Zhigang Xu
- College of Pharmacy, National & Local Joint Engineering Research Center of Targeted and Innovative Therapeutics, Chongqing University of Arts and Sciences, Chongqing 402160, China
| | - Donglin Yang
- College of Pharmacy, National & Local Joint Engineering Research Center of Targeted and Innovative Therapeutics, Chongqing University of Arts and Sciences, Chongqing 402160, China
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5
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Kanta Das K, Kumar Ghosh A, Hajra A. One-Pot Manganese (I)-Catalyzed Oxidant-Controlled Divergent Functionalization of 2-Arylindazoles. Chemistry 2024; 30:e202302849. [PMID: 37870380 DOI: 10.1002/chem.202302849] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2023] [Revised: 10/21/2023] [Accepted: 10/23/2023] [Indexed: 10/24/2023]
Abstract
The oxidant-controlled divergent synthesis of C-2' formyl 2H-indazoles and indazoloindazolediones has been developed through Mn(I)- catalyzed ortho C-H functionalization of 2H-indazoles with para-formaldehyde to afford C-2' hydroxymethylated 2H-indazoles and subsequently oxidation with varying the amount of DDQ in one-pot. By employing selectfluor as the oxidant instead of DDQ, this reaction exclusively provided indazolebenzoxazine derivatives. This strategy delivered unsymmetrical indazoloindazoledione and indazolobenzoxazine with varied functional group tolerance in moderate to good yields.
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Affiliation(s)
- Krishna Kanta Das
- Department of Chemistry, Visva-Bharati, A Central University), 731235, Santiniketanm, West Bengal, India
| | - Asim Kumar Ghosh
- Department of Chemistry, Visva-Bharati, A Central University), 731235, Santiniketanm, West Bengal, India
| | - Alakananda Hajra
- Department of Chemistry, Visva-Bharati, A Central University), 731235, Santiniketanm, West Bengal, India
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6
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Bandehali-Naeini F, Tanbakouchian Z, Farajinia-Lehi N, Mayer N, Shiri M, Breugst M. Two distinct protocols for the synthesis of unsymmetrical 3,4-disubstituted maleimides based on transition-metal catalysts. Org Biomol Chem 2024; 22:380-387. [PMID: 38086692 DOI: 10.1039/d3ob01620j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2024]
Abstract
Two tandem catalytic systems are described for the synthesis of novel 3,4-disubstituted maleimides using the same Ugi adducts as starting materials. 4-Aryl-3-pyrrolyl- and 4-aryl-3-indolyl-maleimides were successfully obtained via a Pd(OAc)2/PPh3 based protocol. In contrast, maleimide-fused pyrrolo and indolo[1,2-a]quinolines were obtained in a complementary methodology using CuI/L-proline. These strategies involved a combination of benzylic amine oxidation, trans-amidation, intramolecular Knoevenagel condensation, and N-arylation reactions. Computational investigations provide further insights into this reaction sequence.
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Affiliation(s)
- Farzaneh Bandehali-Naeini
- Department of Organic Chemistry, Faculty of Chemistry, Alzahra University, Vanak, Tehran 1993893973, Iran.
| | - Zahra Tanbakouchian
- Department of Organic Chemistry, Faculty of Chemistry, Alzahra University, Vanak, Tehran 1993893973, Iran.
| | - Noushin Farajinia-Lehi
- Department of Organic Chemistry, Faculty of Chemistry, Alzahra University, Vanak, Tehran 1993893973, Iran.
| | - Nicolas Mayer
- Institut für Chemie, Technische Universität Chemnitz, Straße der Nationen 62, 09111 Chemnitz, Germany.
| | - Morteza Shiri
- Department of Organic Chemistry, Faculty of Chemistry, Alzahra University, Vanak, Tehran 1993893973, Iran.
| | - Martin Breugst
- Institut für Chemie, Technische Universität Chemnitz, Straße der Nationen 62, 09111 Chemnitz, Germany.
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7
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Huang JJ, Liao HC, Hsu CE, Liu YR, Chang YF, Chou SY. Synthesis of Spirocyclopropane-Containing 4 H-Pyrazolo[1,5- a]indoles via Alkylative Dearomatization and Intramolecular N-Imination of an Indole- O-(Methylsulfonyl)oxime. Molecules 2023; 28:6374. [PMID: 37687203 PMCID: PMC10490174 DOI: 10.3390/molecules28176374] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2023] [Revised: 08/26/2023] [Accepted: 08/29/2023] [Indexed: 09/10/2023] Open
Abstract
In this paper, we report the synthesis of spirocyclopropane-containing 4H-pyrazolo[1,5-a]indoles 6a-e via alkylative dearomatization and intramolecular N-imination of indole-O-(methylsulfonyl)oxime 11. Starting materials tryptophol (7) and 2-bromocyclopetanone (8) were reacted in the presence of HBF4·OEt2, providing 1,2,3,5,6,11-hexahydrocyclopenta[2,3]oxepino[4,5-b]indole (9) in a 63% yield. Compound 9 was reacted with hydroxylamine hydrochloride to afford oxime 10 (65% yield), which was subsequently bis-methanesulfonated to form 11 in a 85% yield. Heating 11 with various alcohols in the presence of N,N-diisopropylethylamine (DIPEA) triggered the alkylative dearomatization and intramolecular N-imination, forming the spirocyclopropane and 4H-pyrazolo[1,5-a]indole structures in the targets 6a-e with 67-84% yields.
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Affiliation(s)
- Jiann-Jyh Huang
- Institute of BioPharmaceutical Sciences, National Sun Yat-sen University, Kaohsiung 80424, Taiwan
- Department of Applied Chemistry, National Chiayi University, Chiayi City 600, Taiwan
| | - Hung-Chun Liao
- Department of Applied Chemistry, National Chiayi University, Chiayi City 600, Taiwan
| | - Cheng-En Hsu
- Department of Applied Chemistry, National Chiayi University, Chiayi City 600, Taiwan
| | - Yan-Ru Liu
- Department of Applied Chemistry, National Chiayi University, Chiayi City 600, Taiwan
| | - Yi-Fu Chang
- Department of Applied Chemistry, National Chiayi University, Chiayi City 600, Taiwan
| | - Shan-Yen Chou
- Development Center for Biotechnology, National Biotechnology Research Park, Taipei City 115, Taiwan
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8
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Singh Chauhan AN, Mali G, Dua G, Samant P, Kumar A, Erande RD. [RhCp*Cl 2] 2-Catalyzed Indole Functionalization: Synthesis of Bioinspired Indole-Fused Polycycles. ACS OMEGA 2023; 8:27894-27919. [PMID: 37576617 PMCID: PMC10413382 DOI: 10.1021/acsomega.3c02510] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/13/2023] [Accepted: 07/11/2023] [Indexed: 08/15/2023]
Abstract
Polycyclic fused indoles are ubiquitous in natural products and pharmaceuticals due to their immense structural diversity and biological inference, making them suitable for charting broader chemical space. Indole-based polycycles continue to be fascinating as well as challenging targets for synthetic fabrication because of their characteristic structural frameworks possessing biologically intriguing compounds of both natural and synthetic origin. As a result, an assortment of new chemical processes and catalytic routes has been established to provide unified access to these skeletons in a very efficient and selective manner. Transition-metal-catalyzed processes, in particular from rhodium(III), are widely used in synthetic endeavors to increase molecular complexity efficiently. In recent years, this has resulted in significant progress in reaching molecular scaffolds with enormous biological activity based on core indole skeletons. Additionally, Rh(III)-catalyzed direct C-H functionalization and benzannulation protocols of indole moieties were one of the most alluring synthetic techniques to generate indole-fused polycyclic molecules efficiently. This review sheds light on recent developments toward synthesizing fused indoles by cascade annulation methods using Rh(III)-[RhCp*Cl2]2-catalyzed pathways, which align with the comprehensive and sophisticated developments in the field of Rh(III)-catalyzed indole functionalization. Here, we looked at a few intriguing cascade-based synthetic designs catalyzed by Rh(III) that produced elaborate frameworks inspired by indole bioactivity. The review also strongly emphasizes mechanistic insights for reaching 1-2, 2-3, and 3-4-fused indole systems, focusing on Rh(III)-catalyzed routes. With an emphasis on synthetic efficiency and product diversity, synthetic methods of chosen polycyclic carbocycles and heterocycles with at least three fused, bridged, or spiro cages are reviewed. The newly created synthesis concepts or toolkits for accessing diazepine, indol-ones, carbazoles, and benzo-indoles, as well as illustrative privileged synthetic techniques, are included in the featured collection.
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Affiliation(s)
| | - Ghanshyam Mali
- Department
of Chemistry, Indian Institute of Technology
Jodhpur, Jodhpur 342037, India
| | - Garima Dua
- Department
of Chemistry, Indian Institute of Technology
Jodhpur, Jodhpur 342037, India
| | - Priya Samant
- Department
of Chemistry, Indian Institute of Technology
Jodhpur, Jodhpur 342037, India
| | - Akhilesh Kumar
- Department
of Chemistry and Nano Science, Ewha Womans
University, Seoul 03760, Korea
| | - Rohan D. Erande
- Department
of Chemistry, Indian Institute of Technology
Jodhpur, Jodhpur 342037, India
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9
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Bhati KS, Suwalka D, Verma VP, Jassal AK, Kumari N, Sharma S. Cell Voltage-Dependent Structural Dichotomy: Electrochemical C-H Acyloxylation and N-Acylation of 2 H-Indazoles. Org Lett 2023. [PMID: 37450634 DOI: 10.1021/acs.orglett.3c01649] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/18/2023]
Abstract
A simple and efficient electrochemical method that utilizes modulation of the cell voltage to cause structural alterations in 2H-indazole is introduced. This method enables the C-3 acyloxylation of 2H-indazole and promotes the transfer of the acyl group from C-3 to N-1, allowing the N-acylation of 2H-indazoles. Additionally, the application of the μ-electro flow reactor was demonstrated, showcasing its effectiveness in achieving gram-scale production of 3x within a short residence time.
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Affiliation(s)
- Kuldeep Singh Bhati
- Department of Chemistry, Mohanlal Sukhadia University, Udaipur 313001, India
| | - Dinesh Suwalka
- Department of Chemistry, Mohanlal Sukhadia University, Udaipur 313001, India
| | - Ved Prakash Verma
- Department of Chemistry, Banasthali University, Niwai-Jodhpuriya Road, Vanasthali 304022, India
| | - Amanpreet Kaur Jassal
- Department of Chemistry, U.G.C. Centre of Advanced Studies in Chemistry, Guru Nanak Dev University, Amritsar 143005, India
| | - Neetu Kumari
- Department of Chemistry, Mohanlal Sukhadia University, Udaipur 313001, India
| | - Siddharth Sharma
- Department of Chemistry, Mohanlal Sukhadia University, Udaipur 313001, India
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10
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Wang M, Zhou Q, Zhang X, Fan X. Condition‐Controlled Divergent Synthesis of Imidazoindolone Spiroisoquinolinones from
N
‐Alkoxycarboxamide Indoles and Diazo Homophthalimides. Adv Synth Catal 2023. [DOI: 10.1002/adsc.202300085] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/07/2023]
Affiliation(s)
- Manqing Wang
- Pingyuan Laboratory Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals Key Laboratory of Green Chemical Media and Reactions Ministry of Education School of Chemistry and Chemical Engineering Henan Normal University Xinxiang Henan 453007, People's Republic of China
| | - Qianting Zhou
- Pingyuan Laboratory Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals Key Laboratory of Green Chemical Media and Reactions Ministry of Education School of Chemistry and Chemical Engineering Henan Normal University Xinxiang Henan 453007, People's Republic of China
| | - Xinying Zhang
- Pingyuan Laboratory Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals Key Laboratory of Green Chemical Media and Reactions Ministry of Education School of Chemistry and Chemical Engineering Henan Normal University Xinxiang Henan 453007, People's Republic of China
| | - Xuesen Fan
- Pingyuan Laboratory Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals Key Laboratory of Green Chemical Media and Reactions Ministry of Education School of Chemistry and Chemical Engineering Henan Normal University Xinxiang Henan 453007, People's Republic of China
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11
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Lin CY, Huang WW, Huang YT, Dhole S, Barve IJ, Sun CM. Rh(III)-Catalyzed Switchable [4 + 1] and [4 + 2] Annulation of N-Aryl Pyrazolones with Maleimides: An Access to Spiro Pyrazolo[1,2- a]indazole-pyrrolidine and Fused Pyrazolopyrrolo Cinnolines. J Org Chem 2023; 88:3424-3435. [PMID: 36864685 DOI: 10.1021/acs.joc.2c02338] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/04/2023]
Abstract
A rhodium(III)-catalyzed controllable [4 + 1] and [4 + 2] annulation of N-aryl pyrazolones with maleimides as C1 and C2 synthon has been explored for the synthesis of spiro[pyrazolo[1,2-a]indazole-pyrrolidines] and fused pyrazolopyrrolo cinnolines. The product selectivity was achieved through time-dependent annulation. The [4 + 1] annulation reaction involves sequential Rh(III)-catalyzed C-H alkenylation of N-aryl pyrazolone, followed by an intramolecular spirocyclization via aza-Michael-type addition to afford spiro[pyrazolo[1,2-a]indazole-pyrrolidine]. However, prolonged reaction time converts in situ formed spiro[pyrazolo[1,2-a]indazole-pyrrolidine] into fused pyrazolopyrrolocinnoline. This unique product formation switch proceeds via strain-driven ring expansion through a 1,2-shift of the C-C bond.
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Affiliation(s)
- Chih-Yu Lin
- Department of Applied Chemistry, National Chiao-Tung University, 1001 Ta-Hsueh Road, Hsinchu 300-10, Taiwan, ROC
| | - Wan-Wen Huang
- Department of Applied Chemistry, National Chiao-Tung University, 1001 Ta-Hsueh Road, Hsinchu 300-10, Taiwan, ROC
| | - Ying-Ti Huang
- Department of Applied Chemistry, National Chiao-Tung University, 1001 Ta-Hsueh Road, Hsinchu 300-10, Taiwan, ROC
| | - Sandip Dhole
- Department of Applied Chemistry, National Chiao-Tung University, 1001 Ta-Hsueh Road, Hsinchu 300-10, Taiwan, ROC
| | - Indrajeet J Barve
- Department of Applied Chemistry, National Chiao-Tung University, 1001 Ta-Hsueh Road, Hsinchu 300-10, Taiwan, ROC.,Department of Chemistry, MES Abasaheb Garware College, Pune 411004, Maharashtra, India
| | - Chung-Ming Sun
- Department of Applied Chemistry, National Chiao-Tung University, 1001 Ta-Hsueh Road, Hsinchu 300-10, Taiwan, ROC.,Department of Medicinal and Applied Chemistry, Kaohsiung Medical University, 100, Shih-Chuan 1st Road, Kaohsiung 807-08, Taiwan, ROC
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12
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Gugulothu K, Jatoth R, Edukondalu P, Vanga A, Matta R, Shiva Kumar K. Synthesis of fused bis-indazoles/indazoles via a one-pot sequential strategy. Org Biomol Chem 2023; 21:2816-2821. [PMID: 36924392 DOI: 10.1039/d3ob00121k] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/18/2023]
Abstract
We report here an efficient synthesis of fused bis-indazoles/indazoles via a one-pot sequential strategy starting from o-azido aldehydes and amines. This novel method involves the sequential formation of 2H-indazole followed by a Pd-catalyzed intramolecular cross-dehydrogenative coupling reaction. Overall, this one-pot sequential reaction involved the formation of new five bonds, resulting in the formation of three heterocyclic rings.
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Affiliation(s)
- Kishan Gugulothu
- Department of Chemistry, Osmania University, Hyderabad-500 007, India
| | - Ramanna Jatoth
- Department of Chemistry, Osmania University, Hyderabad-500 007, India
| | | | - Anusha Vanga
- Department of Chemistry, Osmania University, Hyderabad-500 007, India
| | - Raghavender Matta
- Department of Chemistry, Osmania University, Hyderabad-500 007, India
| | - K Shiva Kumar
- Department of Chemistry, Osmania University, Hyderabad-500 007, India.,Department of Chemistry, School of Physical Sciences, Central University of Kerala, Kasaragod, Kerala 671320, India.
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13
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Yogananda Chary D, Soumya Reddy M, Ajay C, Sridhar B, V Subba Reddy B. Ir(III)-Catalyzed Dual C-H Activation of 2-Aryl Phthalazinediones and 3-Aryl-2 H-benzo[ e][1,2,4]thiadiazine-1,1-dioxides for the Construction of Spiro-Fused Cyclic Frameworks. J Org Chem 2023. [PMID: 36802537 DOI: 10.1021/acs.joc.2c02333] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/23/2023]
Abstract
An Ir(III)-catalyzed double C-H activation strategy has been developed for the synthesis of highly rigid spiro frameworks by means of ortho-functionalization of 2-aryl phthalazinediones and 2,3-diphenylcycloprop-2-en-1-ones using the Ir(III)/AgSbF6 catalytic system. Similarly, 3-aryl-2H-benzo[e][1,2,4]thiadiazine-1,1-dioxides undergo smooth cyclization with 2,3-diphenylcycloprop-2-en-1-ones to afford a diverse range of spiro compounds in good yields with excellent selectivity. Additionally, 2-arylindazoles provide the corresponding chalcone derivatives under similar reaction conditions.
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Affiliation(s)
- Devulapally Yogananda Chary
- Fluoro-Agrochemicals, CSIR-Indian Institute of Chemical Technology, Hyderabad 500007, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, UP 201002, India
| | - Minpoor Soumya Reddy
- Fluoro-Agrochemicals, CSIR-Indian Institute of Chemical Technology, Hyderabad 500007, India
| | - Chidrawar Ajay
- Fluoro-Agrochemicals, CSIR-Indian Institute of Chemical Technology, Hyderabad 500007, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, UP 201002, India
| | - Balasubramanian Sridhar
- Laboratory of X-ray Crystallography, CSIR-Indian Institute of Chemical Technology, Hyderabad 500007, India
| | - Basi V Subba Reddy
- Fluoro-Agrochemicals, CSIR-Indian Institute of Chemical Technology, Hyderabad 500007, India
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14
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Li H, Shen M, Li B, Zhang X, Fan X. Solvent-Dependent Selective Synthesis of CF 3-Tethered Indazole Derivatives Based on Multiple Bond Activations. Org Lett 2023; 25:720-725. [PMID: 36706028 DOI: 10.1021/acs.orglett.2c04003] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Presented herein is a solvent-dependent selective synthesis of CF3-tethered indazole derivatives via the cascade reactions of 1-arylpyrazolidinones with trifluoromethyl ynones. Mechanistically, the formation of the title products involves cascade N-H/C-H/C-N/C-C bond cleavage along with pyrazole ring formation and pyrazolidinone ring opening. For the formation of a pyrazole scaffold, 1-phenylpyrazolidinone acts as a C2N2 synthon, while trifluoromethyl ynone serves as a C1 synthon. Meanwhile, trifluoromethyl ynone also acts as an enol unit to facilitate the ring opening of the pyrazolidinone ring and provide a trifluoropropenoxy fragment via cleavage of the alkynyl triple bond and migration of the cleaved moiety. When the reaction was run in trifluoroethanol instead of DCE, it selectively afforded indazole derivatives tethered with a trifluoroethoxy moiety through in situ transesterification. To our knowledge, this is the first synthesis of CF3-tethered indazole derivatives via concurrent alkynyl activation, pyrazole formation, and CF3 migration.
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Affiliation(s)
- Hao Li
- NMPA Key Laboratory for Research and Evaluation of Innovative Drug, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
| | - Mengyang Shen
- NMPA Key Laboratory for Research and Evaluation of Innovative Drug, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
| | - Bin Li
- NMPA Key Laboratory for Research and Evaluation of Innovative Drug, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
| | - Xinying Zhang
- NMPA Key Laboratory for Research and Evaluation of Innovative Drug, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
| | - Xuesen Fan
- NMPA Key Laboratory for Research and Evaluation of Innovative Drug, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
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15
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Yu C, Xu Y, Zhang X, Fan X. Selective Synthesis of Pyrazolonyl Spirodihydroquinolines or Pyrazolonyl Spiroindolines under Aerobic or Anaerobic Conditions. Org Lett 2022; 24:9473-9478. [PMID: 36524816 DOI: 10.1021/acs.orglett.2c03952] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Presented herein is a condition-controlled selective synthesis of pyrazolonyl spirodihydroquinolines or pyrazolonyl spiroindolines through formal [5 + 1] or [4 + 1] spiroannulation of 2-alkenylanilines with diazopyrazolones. Mechanistically, the formation of the title products involves initial generation of a pyrazolonyl spiro-fused seven-membered ruthenacycle species serving as a key intermediate through Ru(II)-catalyzed C-H/N-H bonds metalation, carbene formation, and its migratory insertion. When the reaction is carried out under air, the key intermediate undergoes reductive elimination to afford spirodihydroquinoline. When the reaction is run under argon, the key intermediate undergoes protonation and intramolecular nucleophilic addition to furnish spiroindoline. This work provides an atom-economical protocol for the effective functionalization of alkenyl C(sp2)-H bond, allowing rapid and selective assembly of valuable spiroscaffolds with a broad range of substrates.
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Affiliation(s)
- Caiyun Yu
- NMPA Key Laboratory for Research and Evaluation of Innovative Drug, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
| | - Yuanshuang Xu
- NMPA Key Laboratory for Research and Evaluation of Innovative Drug, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
| | - Xinying Zhang
- NMPA Key Laboratory for Research and Evaluation of Innovative Drug, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
| | - Xuesen Fan
- NMPA Key Laboratory for Research and Evaluation of Innovative Drug, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
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16
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Lv KH, Zhao QS, Zhao KH, Yang JM, Yan SJ. Cu-Catalyzed Oxidative [3 + 2] Annulation of 2-(Pyridine-2-yl)acetates with Maleimides: Synthesis of 1 H-Pyrrolo[3,4- b]indolizine-1,3-diones. J Org Chem 2022; 87:15301-15311. [DOI: 10.1021/acs.joc.2c01879] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Affiliation(s)
- Kai-Hong Lv
- Key Laboratory of Medicinal Chemistry for Natural Resource (Yunnan University), Ministry of Education, School of Chemical Science and Technology, Yunnan University, Kunming 650091, P. R. China
| | - Qing-Sheng Zhao
- Key Laboratory of Medicinal Chemistry for Natural Resource (Yunnan University), Ministry of Education, School of Chemical Science and Technology, Yunnan University, Kunming 650091, P. R. China
| | - Ke-Hua Zhao
- Key Laboratory of Medicinal Chemistry for Natural Resource (Yunnan University), Ministry of Education, School of Chemical Science and Technology, Yunnan University, Kunming 650091, P. R. China
| | - Jia-Ming Yang
- Key Laboratory of Medicinal Chemistry for Natural Resource (Yunnan University), Ministry of Education, School of Chemical Science and Technology, Yunnan University, Kunming 650091, P. R. China
| | - Sheng-Jiao Yan
- Key Laboratory of Medicinal Chemistry for Natural Resource (Yunnan University), Ministry of Education, School of Chemical Science and Technology, Yunnan University, Kunming 650091, P. R. China
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17
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Wang Y, Jiang Y, Zhang X, Fan X. Synthesis of 1,3-benzooxazine spirosuccinimides through the cascade reaction of 2-phenoxy-1H-benzo[d]imidazoles with maleimides. Tetrahedron Lett 2022. [DOI: 10.1016/j.tetlet.2022.154182] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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18
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Yang Z, Yu JT, Pan C. Recent advances in C-H functionalization of 2 H-indazoles. Org Biomol Chem 2022; 20:7746-7764. [PMID: 36178474 DOI: 10.1039/d2ob01463g] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
2H-Indazoles are one class of the most important nitrogen-containing heterocyclic compounds. The 2H-indazole motif is widely present in bioactive natural products and drug molecules that exhibit distinctive bioactivities. Therefore, much attention has been paid to access diverse 2H-indazole derivatives. Among them, the late-stage functionalization of 2H-indazoles via C-H activation is recognized as an efficient approach for increasing the complexity and diversity of 2H-indazole derivatives. In this review, we summarized recent achievements in the late-stage functionalization of 2H-indazoles, including the C3-functionalization of 2H-indazoles through transition metal-catalyzed C-H activation or a radical pathway, transition metal-catalyzed ortho C2'-H functionalization of 2H-indazoles and remote C-H functionalization at the benzene ring in 2H-indazoles.
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Affiliation(s)
- Zixian Yang
- School of Petrochemical Engineering, Changzhou University, Changzhou 213164, P. R. China.
| | - Jin-Tao Yu
- School of Petrochemical Engineering, Changzhou University, Changzhou 213164, P. R. China.
| | - Changduo Pan
- School of Chemistry and Chemical Engineering, Jiangsu University of Technology, Changzhou 213001, P. R. China.
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19
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Pu WY, Chen XY, Dong L. Rh(III)-catalyzed [5+1] spirocyclization to produce novel benzimidazole-incorporated spirosuccinimides. GREEN SYNTHESIS AND CATALYSIS 2022. [DOI: 10.1016/j.gresc.2022.09.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022] Open
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20
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Kumaran S, Parthasarathy K. Rhodium-Catalyzed Annulations and Heck Coupling/Aza-Michael Addition for the Synthesis of Benzothiadiazinoisoquinoline 6,6-Dioxides and Benzothiadiazinoisoindole 5,5-Dioxides, Respectively. J Org Chem 2022; 87:11989-12000. [PMID: 36049131 DOI: 10.1021/acs.joc.2c00964] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A new and efficient protocol has been demonstrated for the synthesis of benzothiadiazinoisoquinoline 6,6-dioxides and benzothiadiazinoisoindole 5,5-dioxides in good to excellent yields. These compounds are formed through a sequential Rh(III)-catalyzed C-H cyclization of dihydrophenylbenzothiadiazine 1,1-dioxides with alkynes and oxidative Heck coupling/aza-Michael addition of dihydrophenylbenzothiadiazine 1,1-dioxides with acrylates, respectively.
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Affiliation(s)
- Subramani Kumaran
- Department of Organic Chemistry, University of Madras, Guindy Campus, Tamilnadu, Chennai 600025, India
| | - Kanniyappan Parthasarathy
- Department of Organic Chemistry, University of Madras, Guindy Campus, Tamilnadu, Chennai 600025, India
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21
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Huang YT, Barve IJ, Huang YT, Dhole S, Chiu WJ, Sun CM. Substrate-controlled Rh(III)-catalyzed regiodivergent annulation towards fused and spiro benzimidazoles. Org Biomol Chem 2022; 20:6854-6862. [PMID: 35971982 DOI: 10.1039/d2ob00906d] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A Rh(III)-catalyzed cascade C-H activation and cyclization of 2-aryl benzimidazoles with maleimides for the synthesis of benzimidazole-fused isoquinolines and benzimidazole-spiro isoindoles is reported. Switchable selectivity towards the formation of these two distinct products can be achieved using unsubstituted and substituted benzimidazoles at the ortho-position of the phenyl ring. Mechanistically, C-H activation followed by migratory insertion of maleimide forms a Heck-type intermediate. Unsubstituted benzimidazole undergoes aza-Michael addition to form a (4 + 2) fused product, whereas ortho-substituted phenyl benzimidazole causes steric clash to deliver a (4 + 1) spiro-adduct favorably via acid-catalyzed intramolecular annulation.
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Affiliation(s)
- Ying-Ti Huang
- Department of Applied Chemistry, 1001 Ta-Hseuh Road, National Chiao Tung University, Hsinchu 300-10, Taiwan, Republic of China.
| | - Indrajeet J Barve
- Department of Applied Chemistry, 1001 Ta-Hseuh Road, National Chiao Tung University, Hsinchu 300-10, Taiwan, Republic of China.
| | - Yi-Ting Huang
- Department of Applied Chemistry, 1001 Ta-Hseuh Road, National Chiao Tung University, Hsinchu 300-10, Taiwan, Republic of China.
| | - Sandip Dhole
- Amar Chemistry Pvt. Ltd., G1A, Ackruti Corporate Park, Mumbai 400078, India
| | - Wei-Jung Chiu
- Department of Applied Chemistry, 1001 Ta-Hseuh Road, National Chiao Tung University, Hsinchu 300-10, Taiwan, Republic of China.
| | - Chung-Ming Sun
- Department of Applied Chemistry, 1001 Ta-Hseuh Road, National Chiao Tung University, Hsinchu 300-10, Taiwan, Republic of China. .,Department of Medicinal and Applied Chemistry, Kaohsiung Medical University, 100, Shih-Chuan 1st Road, Kaohsiung 807-08, Taiwan, Republic of China
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22
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Cai X, Song X, Zhu Q, Zhang X, Fan X. Concise Synthesis of Spirocyclic Dihydrophthalazines through Spiroannulation Reactions of Aryl Azomethine Imines with Cyclic Diazo Compounds. J Org Chem 2022; 87:11048-11062. [PMID: 35921479 DOI: 10.1021/acs.joc.2c01312] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Spiroannulation reactions are fundamental and invaluable for the synthesis of spirocyclic compounds. Presented herein are novel cascade reactions of aryl azomethine imines with cyclic diazo compounds leading to the formation of spirocyclic dihydrophthalazine derivatives. Based on experimental mechanistic studies, the formation of the title products is believed to go through azomethine imine-assisted cylcometalation, Rh-carbene formation through dediazonization, and migratory insertion followed by reductive elimination and azomethine imine ring opening. Control experiments revealed that air acts as an effective and sustainable co-oxidant to facilitate the cascade reaction. In general, this concise synthesis of the unprecedented spirocyclic dihydrophthalazine derivatives has advantages such as easily accessible substrates, good functional group compatibility, mild reaction conditions, high efficiency and selectivity, and excellent atom-economy. In addition, the value of this protocol is underlined by its ready scalability and divergent derivation of products.
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Affiliation(s)
- Xinyuan Cai
- Henan Key Laboratory of Organic Functional Molecules and Drug Innovation, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
| | - Xia Song
- Henan Key Laboratory of Organic Functional Molecules and Drug Innovation, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
| | - Qiuhui Zhu
- Henan Key Laboratory of Organic Functional Molecules and Drug Innovation, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
| | - Xinying Zhang
- Henan Key Laboratory of Organic Functional Molecules and Drug Innovation, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
| | - Xuesen Fan
- Henan Key Laboratory of Organic Functional Molecules and Drug Innovation, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
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23
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Yuan C, Chen D, Pan C, Yu JT. Benzylic C-H Heteroarylation of 4-Methylphenols with 2H-Indazoles. Tetrahedron Lett 2022. [DOI: 10.1016/j.tetlet.2022.154053] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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24
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Lu P, Zhuang W, Lu L, Liu A, Chen Y, Wu C, Zhang X, Huang Q. Chemodivergent Synthesis of Indeno[1,2- b]indoles and Isoindolo[2,1- a]indoles via Mn(III)-Mediated or Electrochemical Intramolecular Radical Cross-Dehydrogenative Coupling. J Org Chem 2022; 87:10967-10981. [PMID: 35901234 DOI: 10.1021/acs.joc.2c01238] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
Chemodivergent synthesis of indeno[1,2-b]indoles and isoindolo[2,1-a]indoles from the same starting materials involving radical cross-dehydrogenative couplings have been developed. Mn(OAc)3·2H2O selectively promoted an intramolecular radical C-H/C-H dehydrogenative coupling reaction to provide indeno[1,2-b]indoles, while an intramolecular radical C-H/N-H dehydrogenative coupling reaction could proceed via electrochemistry to deliver isoindolo[2,1-a]indoles. Plausible mechanisms of the chemodivergent reactions were proposed.
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Affiliation(s)
- Piao Lu
- Fujian Key Laboratory of Polymer Materials, Fujian Provincial Key Laboratory of Advanced Materials Oriented Chemical Engineering, College of Chemistry & Materials Science, Fujian Normal University, Fuzhou, Fujian 350007, PR China
| | - Weihui Zhuang
- Fujian Key Laboratory of Polymer Materials, Fujian Provincial Key Laboratory of Advanced Materials Oriented Chemical Engineering, College of Chemistry & Materials Science, Fujian Normal University, Fuzhou, Fujian 350007, PR China
| | - Leipeng Lu
- Fujian Key Laboratory of Polymer Materials, Fujian Provincial Key Laboratory of Advanced Materials Oriented Chemical Engineering, College of Chemistry & Materials Science, Fujian Normal University, Fuzhou, Fujian 350007, PR China
| | - Anyi Liu
- Fujian Key Laboratory of Polymer Materials, Fujian Provincial Key Laboratory of Advanced Materials Oriented Chemical Engineering, College of Chemistry & Materials Science, Fujian Normal University, Fuzhou, Fujian 350007, PR China
| | - Yixi Chen
- Fujian Key Laboratory of Polymer Materials, Fujian Provincial Key Laboratory of Advanced Materials Oriented Chemical Engineering, College of Chemistry & Materials Science, Fujian Normal University, Fuzhou, Fujian 350007, PR China
| | - Chenmeng Wu
- Fujian Key Laboratory of Polymer Materials, Fujian Provincial Key Laboratory of Advanced Materials Oriented Chemical Engineering, College of Chemistry & Materials Science, Fujian Normal University, Fuzhou, Fujian 350007, PR China
| | - Xiaofeng Zhang
- Fujian Key Laboratory of Polymer Materials, Fujian Provincial Key Laboratory of Advanced Materials Oriented Chemical Engineering, College of Chemistry & Materials Science, Fujian Normal University, Fuzhou, Fujian 350007, PR China
| | - Qiufeng Huang
- Fujian Key Laboratory of Polymer Materials, Fujian Provincial Key Laboratory of Advanced Materials Oriented Chemical Engineering, College of Chemistry & Materials Science, Fujian Normal University, Fuzhou, Fujian 350007, PR China
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25
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Ghosh S, Pyne P, Ghosh A, Hajra A. Ortho C-H Functionalizations of 2-Aryl-2H-Indazoles. CHEM REC 2022; 22:e202200158. [PMID: 35866505 DOI: 10.1002/tcr.202200158] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2022] [Revised: 07/06/2022] [Accepted: 07/07/2022] [Indexed: 11/10/2022]
Abstract
C-H Functionalization is ubiquitously considered as a powerful, efficient and handy tool for installing various functional groups in complex organic heterocycles in an easier and step-economic way. Similarly, indazole is endowed as a potent heterocycle and is eminent for its profound impact in biological, medicinal and industrial chemistry. In this scenario, C-H functionalization at the selective ortho position of 2-arylindazole in assistance of a metal catalyst is also becoming an appealing approach in synthetic organic chemistry. This review addressed the recent findings and developments on ortho C-H functionalization of 2-aryl-2H-indazazoles with literature coverage extending from 2018 to May 2022.
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Affiliation(s)
- Sumit Ghosh
- Department of Chemistry, Visva-Bharati (A Central University), Santiniketan, 731235, India
| | - Pranjal Pyne
- Department of Chemistry, Visva-Bharati (A Central University), Santiniketan, 731235, India
| | - Anogh Ghosh
- Department of Chemistry, Visva-Bharati (A Central University), Santiniketan, 731235, India
| | - Alakananda Hajra
- Department of Chemistry, Visva-Bharati (A Central University), Santiniketan, 731235, India
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26
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Chen G, Cai X, Zhang X, Fan X. Condition-Dependent Selective Synthesis of Indolo[1,2- c]quinazolines and Indolo[3,2- c]quinolines from 2-(1 H-Indol-2-yl)anilines and Sulfoxonium Ylides. J Org Chem 2022; 87:9815-9828. [PMID: 35839292 DOI: 10.1021/acs.joc.2c00858] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
In this paper, a selective synthesis of indolo[1,2-c]quinazolines and indolo[3,2-c]quinolines through the cascade reactions of 2-(1H-indol-2-yl)anilines with sulfoxonium ylides is presented. The formation of products involves the generation of a carbene species from sulfoxonium ylide and its N-H bond insertion reaction with 2-(1H-indol-2-yl)aniline followed by deoxygenative imine formation, intramolecular N- or C- nucleophilic addition and deoxygenative aromatization. This switchable synthesis was condition-dependent. In the presence of K2CO3 in CH3CN, the reaction mainly furnished indolo[1,2-c]quinazolines. In the presence of HOAc in dioxane, it selectively afforded indolo[3,2-c]quinolines. In addition, direct C-H/N-H functionalization of the products obtained provides a convenient and direct access to polycyclic heteroaromatic compounds. These novel protocols have advantages such as readily accessible substrates, easily tunable selectivity, good compatibility with diverse functional groups, and the use of air as a cost-free and sustainable oxidant.
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Affiliation(s)
- Guang Chen
- School of Environment, School of Chemistry and Chemical Engineering, Key Laboratory for Yellow River and Huai River Water Environmental Pollution Control, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, NMPA Key Laboratory for Research and Evaluation of Innovative Drug, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Henan Normal University, Xinxiang, Henan 453007, China
| | - Xinyuan Cai
- School of Environment, School of Chemistry and Chemical Engineering, Key Laboratory for Yellow River and Huai River Water Environmental Pollution Control, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, NMPA Key Laboratory for Research and Evaluation of Innovative Drug, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Henan Normal University, Xinxiang, Henan 453007, China
| | - Xinying Zhang
- School of Environment, School of Chemistry and Chemical Engineering, Key Laboratory for Yellow River and Huai River Water Environmental Pollution Control, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, NMPA Key Laboratory for Research and Evaluation of Innovative Drug, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Henan Normal University, Xinxiang, Henan 453007, China
| | - Xuesen Fan
- School of Environment, School of Chemistry and Chemical Engineering, Key Laboratory for Yellow River and Huai River Water Environmental Pollution Control, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, NMPA Key Laboratory for Research and Evaluation of Innovative Drug, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Henan Normal University, Xinxiang, Henan 453007, China
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27
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Li N, Zhang X, Fan X. Synthesis of pyrazolidinone fused cinnolines via the cascade reactions of 1-phenylpyrazolidinones with vinylene carbonate. Tetrahedron Lett 2022. [DOI: 10.1016/j.tetlet.2022.153984] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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28
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Liu SL, Ye C, Wang X. Recent advances in transition-metal-catalyzed directed C-H alkenylation with maleimides. Org Biomol Chem 2022; 20:4837-4845. [PMID: 35635524 DOI: 10.1039/d2ob00604a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Transition-metal-catalyzed directed C-H alkenylation with maleimides has attracted much attention in recent years, as maleimide core moieties are present in various natural products and pharmaceuticals. In addition, these derivatives can be readily modified into biologically important compounds including succinimides, pyrrolidines and γ-lactams. The efficient chelation-assisted inert C-H bond activation strategy provides straightforward access to a wide array of structurally diverse molecules containing maleimide units. This review describes the major progress and mechanistic investigations on Heck-type reaction/cyclization of maleimides with organic molecules until early 2022.
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Affiliation(s)
- Shuang-Liang Liu
- College of Material and Chemical Engineering, Zhengzhou University of Light Industry, Kexue avenue 136, Zhengzhou, 450001, P.R. China.
| | - Changchun Ye
- College of Material and Chemical Engineering, Zhengzhou University of Light Industry, Kexue avenue 136, Zhengzhou, 450001, P.R. China.
| | - Xiaoge Wang
- College of Material and Chemical Engineering, Zhengzhou University of Light Industry, Kexue avenue 136, Zhengzhou, 450001, P.R. China.
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29
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Mishra DR, Panda BS, Nayak S, Panda J, Mohapatra S. Recent Advances in the Synthesis of 5‐Membered
N
‐Heterocycles via Rhodium Catalysed Cascade Reactions. ChemistrySelect 2022. [DOI: 10.1002/slct.202200531] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Deepak R. Mishra
- Organic Synthesis Laboratory Department of Chemistry Ravenshaw University Cuttack 753003 Odisha India
| | - Bhabani S. Panda
- Organic Synthesis Laboratory Department of Chemistry Ravenshaw University Cuttack 753003 Odisha India
| | - Sabita Nayak
- Organic Synthesis Laboratory Department of Chemistry Ravenshaw University Cuttack 753003 Odisha India
| | - Jasmine Panda
- Organic Synthesis Laboratory Department of Chemistry Ravenshaw University Cuttack 753003 Odisha India
| | - Seetaram Mohapatra
- Organic Synthesis Laboratory Department of Chemistry Ravenshaw University Cuttack 753003 Odisha India
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30
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Yu C, Xu Y, Zhang X, Fan X. Synthesis of N-Arylindoles from 2-Alkenylanilines and Diazonaphthalen-2(1 H)-ones through Simultaneous Indole Construction and Aryl Introduction. J Org Chem 2022; 87:7392-7404. [PMID: 35594494 DOI: 10.1021/acs.joc.2c00628] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
In this paper, an efficient synthesis of N-arylindoles through the cascade reaction of 2-alkenylanilines with diazonaphthalen-2(1H)-ones is presented. Mechanistically, this reaction involves the generation of a Ru-carbene complex from diazonaphthalen-2(1H)-one, followed by carbene N-H bond insertion with 2-alkenylaniline, intramolecular cyclization, and oxidative aromatization. In this reaction, the Ru(II) complex acts as a multifunctional catalyst to promote not only the carbene formation but also the intramolecular cyclization and the dehydrogenative aromatization. Meanwhile, air acts as a green and cost-effective oxidant. To our knowledge, this is the first example in which N-arylindoles were synthesized through simultaneous introduction of the N-aryl unit and construction of the indole scaffold. Notable advantages of this method include readily accessible and halide-free substrates, additive-free reaction conditions, good efficiency, excellent atom economy, and compatibility with diverse functional groups. In addition, the utility of the product thus obtained was showcased by its diverse structural transformations.
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Affiliation(s)
- Caiyun Yu
- NMPA Key Laboratory for Research and Evaluation of Innovative Drug, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang 453007, Henan, China
| | - Yuanshuang Xu
- NMPA Key Laboratory for Research and Evaluation of Innovative Drug, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang 453007, Henan, China
| | - Xinying Zhang
- NMPA Key Laboratory for Research and Evaluation of Innovative Drug, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang 453007, Henan, China
| | - Xuesen Fan
- NMPA Key Laboratory for Research and Evaluation of Innovative Drug, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang 453007, Henan, China
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31
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Li X, Zhang X, Zhang F, Luo X, Luo H. Construction of Pyridine Ring Systems by Mn(OAc)
2
‐Promoted Formal Dehydrative Dehydroaromatizing [4+2] Cycloaddition of Enamides with Maleimides. Adv Synth Catal 2022. [DOI: 10.1002/adsc.202200251] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Xiaolan Li
- Department of Chemistry & Chemical Engineering Gannan Normal University Ganzhou Jiangxi, 341000 People's Republic of China
| | - Xiuqi Zhang
- Department of Chemistry & Chemical Engineering Gannan Normal University Ganzhou Jiangxi, 341000 People's Republic of China
| | - Fukuan Zhang
- Department of Chemistry & Chemical Engineering Gannan Normal University Ganzhou Jiangxi, 341000 People's Republic of China
| | - Xuzhong Luo
- Department of Chemistry & Chemical Engineering Gannan Normal University Ganzhou Jiangxi, 341000 People's Republic of China
| | - Haiqing Luo
- Department of Chemistry & Chemical Engineering Gannan Normal University Ganzhou Jiangxi, 341000 People's Republic of China
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32
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Wang B, Zhong X, Yao H, Deng R, Yan Z, Gao M, Sen L. Direct alkylation and acylation of 2H‐indazoles using aldehydes under metal‐free conditions. ASIAN J ORG CHEM 2022. [DOI: 10.1002/ajoc.202200152] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Bingqing Wang
- Nanchang University - Qianhu Campus: Nanchang University department of chemistry CHINA
| | - Xiaoyang Zhong
- Nanchang University - Qianhu Campus: Nanchang University department of chemistry CHINA
| | - Hua Yao
- Nanchang University - Qianhu Campus: Nanchang University department of chemistry CHINA
| | - Ruihong Deng
- Nanchang University - Qianhu Campus: Nanchang University department of chemistry CHINA
| | - Zhaohua Yan
- Nanchang University - Qianhu Campus: Nanchang University department of chemistry CHINA
| | - Mengjiao Gao
- Nanchang University Medical College: Medical College of Nanchang University department of medical CHINA
| | - Lin Sen
- Nanchang University Department of Chemistry Nangchang University 330000 Nangchang CHINA
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33
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Zhao J, Chen M, Wu M, Shi L, Li H. Synthesis of Pentasubstituted meta‐Fluoropyridines via [4+2] Cycloaddition and Aromaticzation between Trifluoromethyl Ketimines and Maleimides. ASIAN J ORG CHEM 2022. [DOI: 10.1002/ajoc.202200042] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Jianbo Zhao
- East China University of Science and Technology Pharmacy CHINA
| | - Mengzi Chen
- East China University of Science and Technology Pharmacy CHINA
| | - Min Wu
- East China University of Science and Technology Pharmacy CHINA
| | - Lei Shi
- Huabao Flavours & Fragrances Co., Ltd Research CHINA
| | - Hao Li
- East China University of Science and Technology School of Pharmacy 130 Meilong Road 200237 Shanghai CHINA
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34
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Zhou Q, Song X, Zhang X, Fan X. Synthesis of Spiro[benzo[ d][1,3]oxazine-4,4'-isoquinoline]s via [4+1+1] Annulation of N-Aryl Amidines with Diazo Homophthalimides and O 2. Org Lett 2022; 24:1280-1285. [PMID: 35129363 DOI: 10.1021/acs.orglett.1c04193] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Synthesis of spiro[benzo[d][1,3]oxazine-4,4'-isoquinoline]s through a unique [4+1+1] annulation of N-aryl amidines with diazo homophthalimides and O2 is presented. This unprecedented spirocyclization reaction features readily obtainable substrates, structurally and pharmaceutically attractive products, a cost-free and clean oxygen source, sustainable reaction medium, tolerance of a broad spectrum of functional groups, and an interesting reaction mechanism based on sequential C(sp2)-H/C(sp3)-H bond cleavage and oxygen insertion.
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Affiliation(s)
- Qianting Zhou
- NMPA Key Laboratory for Research and Evaluation of Innovative Drugs, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
| | - Xia Song
- NMPA Key Laboratory for Research and Evaluation of Innovative Drugs, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
| | - Xinying Zhang
- NMPA Key Laboratory for Research and Evaluation of Innovative Drugs, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
| | - Xuesen Fan
- NMPA Key Laboratory for Research and Evaluation of Innovative Drugs, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
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35
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Shen M, Xu Y, Zhang X, Fan X. Synthesis of Spirocyclopropylpyrazole Derivatives via the Cascade Reaction of Alkylidenecyclopropanes with Pyrazolidinones and Trifluoroethanol. Org Chem Front 2022. [DOI: 10.1039/d1qo01921j] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A novel synthesis of spirocyclopropylpyrazole derivatives tethered with a trifluoromethyl unit through an unprecedented cascade reaction of alkylidenecyclopropanes with pyrazolidinones and trifluoroethanol (TFE) has been developed. Mechanistically, the reaction involves...
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36
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Shen M, Li H, Zhang X, Fan X. Rh( iii)-catalyzed simultaneous [3 + 3]/[5 + 1] annulation of 1-arylpyrazolidinones with gem-difluorocyclopropenes leading to fluorinated pyridopyrimidinone derivatives. Org Chem Front 2022. [DOI: 10.1039/d2qo01230h] [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
Presented herein is an efficient and concise synthesis of fluorinated pyridopyrimidinone derivatives through formal [3 + 3]/[5 + 1] annulation of 1-arylpyrazolidinones with gem-difluorocyclopropenes.
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Affiliation(s)
- Mengyang Shen
- NMPA Key Laboratory for Research and Evaluation of Innovative Drug, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
| | - Hao Li
- NMPA Key Laboratory for Research and Evaluation of Innovative Drug, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
| | - Xinying Zhang
- NMPA Key Laboratory for Research and Evaluation of Innovative Drug, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
| | - Xuesen Fan
- NMPA Key Laboratory for Research and Evaluation of Innovative Drug, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
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37
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He Y, Zheng J, Dong L. Rh(III)-Catalyzed Cascade Annulation to Produce N-acetyl Chain of Spiropyrroloisoquinoline Derivatives. Org Biomol Chem 2022; 20:2293-2299. [PMID: 35234789 DOI: 10.1039/d2ob00137c] [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
A new rhodium(III)-catalyzed three-component multistep cascade spirocyclization approach was developed to synthesize nolvel N-acetyl chain of spiropyrroloisoquinoline derivatives using oxadiazoles as the directing group. This one-pot reaction also isolates aryloxadiazole...
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Affiliation(s)
- Yuan He
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry, Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China.
| | - Jing Zheng
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry, Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China.
| | - Lin Dong
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry, Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China.
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38
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Ma C, Wang Y, Chen G, Li J, Jiang Y, Zhang X, Fan X. Divergent construction of 3-(indol-2-yl)succinimide/maleimide and fused benzodiazepine skeletons from 2-(1 H-indol-1-yl)anilines and maleimides. Org Chem Front 2022. [DOI: 10.1039/d2qo00779g] [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
Divergent construction of 3-(indol-2-yl)succinimide/maleimide and indoyl/pyrrolyl fused benzodiazepine skeletons from 2-(1H-indol-1-yl)anilines and maleimides is presented.
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Affiliation(s)
- Chunhua Ma
- NMPA Key Laboratory for Research and Evaluation of Innovative Drug, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
| | - Yue Wang
- NMPA Key Laboratory for Research and Evaluation of Innovative Drug, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
| | - Guang Chen
- NMPA Key Laboratory for Research and Evaluation of Innovative Drug, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
| | - Jingyi Li
- NMPA Key Laboratory for Research and Evaluation of Innovative Drug, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
| | - Yuqin Jiang
- NMPA Key Laboratory for Research and Evaluation of Innovative Drug, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
| | - Xinying Zhang
- NMPA Key Laboratory for Research and Evaluation of Innovative Drug, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
| | - Xuesen Fan
- NMPA Key Laboratory for Research and Evaluation of Innovative Drug, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
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39
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Tsang YL, Choy PY, Leung MP, He X, Kwong FY. Recent advances in rhodium-catalysed cross-dehydrogenative-coupling between two C(sp2)-H bonds. Org Chem Front 2022. [DOI: 10.1039/d1qo01948a] [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
Rhodium-catalysed cross-dehydrogenative coupling (CDC) has received considerable attention in recent years. This modern technology has been considered as an attractive synthetic tool for selective C−C bond formation due to (1)...
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40
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Chen YJ, Xu HB, Liu H, Dong L. Highly-selective synthesis of functionalized spirobenzofuranones and diketones. Org Chem Front 2022. [DOI: 10.1039/d2qo00677d] [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
A convenient and atom-economical rhodium(iii)-catalyzed highly-selective hydroacylation for the synthesis of spirobenzofuranones and diketones has been successfully developed.
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Affiliation(s)
- Yin-Jun Chen
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry, Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
| | - Hui-Bei Xu
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry, Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
| | - Hao Liu
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry, Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
| | - Lin Dong
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry, Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
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41
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Bhattacharjee S, Laru S, Hajra A. Remote difunctionalization of 2 H-indazoles using Koser's reagents. Chem Commun (Camb) 2021; 58:981-984. [PMID: 34937080 DOI: 10.1039/d1cc06129a] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
A new, efficient, and metal-free protocol has been developed for remote difunctionalization of unreactive C-H bonds at the benzene core of 2H-indazole by employing Koser's reagents, which act as both sulfonyloxylating and iodinating agents under ambient air. The present methodology represents facile access to C-4-sulfonyloxylated and C-7-iodinated 2H-indazole derivatives with high regioselectivity, wide functional group tolerance, and broad substrate scope in good to excellent yields. The formed 4,7 disubstituted 2H-indazoles are the precursors of various C-4,7-functionalized 2H-indazoles through simple transformations.
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Affiliation(s)
- Suvam Bhattacharjee
- Department of Chemistry, Visva-Bharati (A Central University), Santiniketan, 731235, West Bengal, India.
| | - Sudip Laru
- Department of Chemistry, Visva-Bharati (A Central University), Santiniketan, 731235, West Bengal, India.
| | - Alakananda Hajra
- Department of Chemistry, Visva-Bharati (A Central University), Santiniketan, 731235, West Bengal, India.
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42
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Khandelia T, Ghosh S, Panigrahi P, Shome R, Ghosh SS, Patel BK. Copper(I)-Mediated Cascade Annulation via Dual C-H/C-H Activation: Access to Benzo[ a]carbazolic AEEgens. J Org Chem 2021; 86:16948-16964. [PMID: 34783566 DOI: 10.1021/acs.joc.1c02109] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
A Cu(I)-mediated cascade cyclization/annulation of unprotected o-alkynylanilines with maleimides in one pot is developed. The protocol offers sequential formation of one C-N and two C-C bonds to deliver fused benzo[a]carbazoles having free NH skeletons. The annulated products display fluorescence emission in the range of 485-502 nm with a large Stokes shift and fluorescence lifetime of ∼17 ns. The annulated 3aa displays AEE behavior in the ethanol/hexane system and possesses marigold-flower-like morphology at the aggregated state. Cell viability assays enumerate biocompatible AEEgens, while their high intracellular fluorescence depicts cell imaging applicability.
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Affiliation(s)
- Tamanna Khandelia
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwaha, Assam 781039, India
| | - Subhendu Ghosh
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwaha, Assam 781039, India
| | - Pritishree Panigrahi
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwaha, Assam 781039, India
| | - Rajib Shome
- Department of Biosciences and Bioengineering, Indian Institute of Technology Guwahati, Guwaha, Assam 781039, India
| | - Siddhartha Sankar Ghosh
- Department of Biosciences and Bioengineering, Indian Institute of Technology Guwahati, Guwaha, Assam 781039, India
| | - Bhisma K Patel
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwaha, Assam 781039, India
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43
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Liu S, Shi Y, Xue C, Zhang L, Zhou L, Song M. Maleimides in Directing‐Group‐Controlled Transition‐Metal‐Catalyzed Selective C−H Alkylation. European J Org Chem 2021. [DOI: 10.1002/ejoc.202101262] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Shuang‐Liang Liu
- College of Material and Chemical Engineering and Key Laboratory of Surface and Interface Science and Technology of Henan Province Zhengzhou University of Light Industry Kexue avenue 100 Zhengzhou 450001 P.R. China
| | - Yajun Shi
- College of Material and Chemical Engineering and Key Laboratory of Surface and Interface Science and Technology of Henan Province Zhengzhou University of Light Industry Kexue avenue 100 Zhengzhou 450001 P.R. China
| | - Cong Xue
- College of Material and Chemical Engineering and Key Laboratory of Surface and Interface Science and Technology of Henan Province Zhengzhou University of Light Industry Kexue avenue 100 Zhengzhou 450001 P.R. China
| | - Liming Zhang
- College of Material and Chemical Engineering and Key Laboratory of Surface and Interface Science and Technology of Henan Province Zhengzhou University of Light Industry Kexue avenue 100 Zhengzhou 450001 P.R. China
| | - Liming Zhou
- College of Material and Chemical Engineering and Key Laboratory of Surface and Interface Science and Technology of Henan Province Zhengzhou University of Light Industry Kexue avenue 100 Zhengzhou 450001 P.R. China
| | - Mao‐Ping Song
- College of Chemistry, and Green Catalysis Center Zhengzhou University Kexue avenue 136 Zhengzhou 450001 P.R. China
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44
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Crystal Structure, Thermodynamic Properties and DFT Studies of 5,6-dimethyl-1H-benzo[d]imidazol-3-ium 3-((2,4-dioxo-1,5-dioxaspiro[5.5]undecan-3-ylidene)methyl) -2,4-dioxo-1,5-dioxaspiro[5.5]undecane Hydrate. CRYSTALS 2021. [DOI: 10.3390/cryst11111393] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
A new 1,5-dioxaspiro[5.5] derivative coupled with a benzimidazole moiety: 5,6-dimethyl-1H-benzo[d]imidazol-3-ium 3-((2,4-dioxo-1,5-dioxaspiro[5.5]undecan-3-ylidene) methyl) -2,4-dioxo-1,5-dioxaspiro[5.5]undecane hydrate (DBH) was prepared. The crystal structure confirmed that it belongs to triclinic, P-1 space group. The title compound includes one (C19H21O8)− anion, one (C9H11N2)+ cation and one water molecule, which assembled into a 2D-net framework by O–H···O and N–H···O hydrogen bonds. The quantum chemical computations using the B3LYP/6-311G (d, p) basis level of theory reveal that the optimized geometric structure is suitable to study the molecule. The theoretically simulated FT-IR spectra and electronic spectra of DBH are compared with experimental data. The results show that the B3LYP/6-311g (d, p) method fits well with the molecular structure. In addition, the thermodynamic properties have also been studied to determine the nature of the DBH.
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45
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Chen G, Wang Y, Zhao J, Zhang X, Fan X. Synthesis of Hydroxysuccinimide Substituted Indolin-3-ones via One-Pot Cascade Reaction of o-Alkynylnitrobenzenes with Maleimides under Au(III)-Cu(II) Relay/Synergetic Catalysis. J Org Chem 2021; 86:14652-14662. [PMID: 34590848 DOI: 10.1021/acs.joc.1c01485] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Presented herein is a one-pot cascade reaction of o-alkynylnitrobenzenes with maleimides leading to the formation of hydroxysuccinimide substituted indolin-3-ones under Au(III)-Cu(II) relay/synergetic catalysis. Mechanistically, the formation of the title products involves an unprecedented cascade process including (1) nitro-alkyne cycloisomerization of o-alkynylnitrobenzene to give isatogen; (2) [3 + 2] dipolar cycloaddition of isatogen with maleimide; and (3) ring opening of the in situ formed isoxazolidine moiety under neutral conditions. Notably, a wide range of substrates bearing various functional groups are compatible with the reaction conditions to give a series of highly valuable hybrid compounds in good efficiency with excellent atom economy. In addition, the products thus obtained could be easily transformed into the corresponding maleimide substituted indolin-3-ones. Importantly, some products demonstrated significant antiproliferative activity in human cancer cell lines.
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Affiliation(s)
- Guang Chen
- School of Environment, Key Laboratory for Yellow River and Huai River Water Environmental Pollution Control, Ministry of Education, Henan Normal University, Xinxiang, Henan 453007, China
| | - Yue Wang
- NMPA Key Laboratory for Research and Evaluation of Innovative Drug, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
| | - Jie Zhao
- NMPA Key Laboratory for Research and Evaluation of Innovative Drug, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
| | - Xinying Zhang
- NMPA Key Laboratory for Research and Evaluation of Innovative Drug, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
| | - Xuesen Fan
- NMPA Key Laboratory for Research and Evaluation of Innovative Drug, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
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46
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Xu Y, Yu C, Zhang X, Fan X. Synthesis of Indolyl-Tethered Spiro[cyclobutane-1,1'-indenes] through Cascade Reactions of 1-(Pyridin-2-yl)-1 H-indoles with Alkynyl Cyclobutanols. Org Lett 2021; 23:8510-8515. [PMID: 34652921 DOI: 10.1021/acs.orglett.1c03200] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Presented herein is an efficient and unprecedented synthesis of indolyl-tethered spiro[cyclobutane-1,1'-indenes] through the cascade reaction of 1-(pyridin-2-yl)-1H-indoles with alkynyl cyclobutanols. Mechanistic experiments implicate a sequential process in which 1-(pyridin-2-yl)-1H-indole first undergoes an alkenylation with alkynyl cyclobutanol followed by an intramolecular Friedel-Crafts reaction to give the title products. The utility of this novel protocol was reflected by the ample substrate scope, high chemo- and regioselectivity, removable directing group, and scalable preparation. In addition, the product thus obtained can be further derivatized quite efficiently.
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Affiliation(s)
- Yuanshuang Xu
- NMPA Key Laboratory for Research and Evaluation of Innovative Drug, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
| | - Caiyun Yu
- NMPA Key Laboratory for Research and Evaluation of Innovative Drug, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
| | - Xinying Zhang
- NMPA Key Laboratory for Research and Evaluation of Innovative Drug, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
| | - Xuesen Fan
- NMPA Key Laboratory for Research and Evaluation of Innovative Drug, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
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47
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Kang JY, An W, Kim S, Kwon NY, Jeong T, Ghosh P, Kim HS, Mishra NK, Kim IS. Synthesis of spirosuccinimides via annulative cyclization between N-aryl indazolols and maleimides under rhodium(III) catalysis. Chem Commun (Camb) 2021; 57:10947-10950. [PMID: 34604876 DOI: 10.1039/d1cc04599g] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
The rhodium(III)-catalyzed spiroannulation reaction between N-aryl indazol-3-ols and maleimides is described herein. The developed method is showcased by the construction of spirosuccinimides using bioactive molecule-linked and chemical probe-linked maleimides. Combined mechanistic investigations including the determination of an isolable rhodacycle complex aided the elucidation of a plausible reaction mechanism.
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Affiliation(s)
- Ju Young Kang
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Republic of Korea.
| | - Won An
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Republic of Korea.
| | - Suho Kim
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Republic of Korea.
| | - Na Yeon Kwon
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Republic of Korea.
| | - Taejoo Jeong
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Republic of Korea.
| | - Prithwish Ghosh
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Republic of Korea.
| | - Hyung Sik Kim
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Republic of Korea.
| | - Neeraj Kumar Mishra
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Republic of Korea.
| | - In Su Kim
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Republic of Korea.
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48
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Rhodium-catalyzed directed C–H functionalization of 2-arylindazoles with diazotized Meldrum's acid. J Organomet Chem 2021. [DOI: 10.1016/j.jorganchem.2021.122009] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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Kumar Ghosh A, Kanta Das K, Hajra A. ortho
‐Allylation of 2‐Arylindazoles with Vinyl Cyclic Carbonate and Diallyl Carbonate
via
Manganese‐Catalyzed C−H Bond Activation. Adv Synth Catal 2021. [DOI: 10.1002/adsc.202100627] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Affiliation(s)
- Asim Kumar Ghosh
- Department of Chemistry Visva-Bharati (A Central University) Santiniketan 731235 India
| | - Krishna Kanta Das
- Department of Chemistry Visva-Bharati (A Central University) Santiniketan 731235 India
| | - Alakananda Hajra
- Department of Chemistry Visva-Bharati (A Central University) Santiniketan 731235 India
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50
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Lin C, Huang W, Huang Y, Dhole S, Sun C. Rhodium‐Catalyzed [4+2] Annulation of N‐Aryl Pyrazolones with Diazo Compounds To Access Pyrazolone‐Fused Cinnolines. European J Org Chem 2021. [DOI: 10.1002/ejoc.202101005] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Affiliation(s)
- Chih‐Yu Lin
- Department of Applied Chemistry National Chiao-Tung University 1001 Ta-Hseuh Road Hsinchu 300-10, ROC Taiwan
| | - Wan‐Wen Huang
- Department of Applied Chemistry National Chiao-Tung University 1001 Ta-Hseuh Road Hsinchu 300-10, ROC Taiwan
| | - Ying‐Ti Huang
- Department of Applied Chemistry National Chiao-Tung University 1001 Ta-Hseuh Road Hsinchu 300-10, ROC Taiwan
| | - Sandip Dhole
- Amar Chemistry Pvt. Ltd. G1 A, Ackruti Corporate Park Mumbai 400078 India
| | - Chung‐Ming Sun
- Department of Applied Chemistry National Chiao-Tung University 1001 Ta-Hseuh Road Hsinchu 300-10, ROC Taiwan
- Department of Medicinal and Applied Chemistry Kaohsiung Medical University Kaohsiung 807-08, ROC Taiwan
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