1
|
Liu Y, Deng L, Guo H, Wan JP. Annulative Nonaromatic Newman-Kwart-Type Rearrangement for the Synthesis of Sulfur Heteroaryls. Org Lett 2024; 26:46-50. [PMID: 38149825 DOI: 10.1021/acs.orglett.3c03581] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2023]
Abstract
By employing enaminones and thiuram disulfides as starting materials, the frontiers of Newman-Kwart rearrangement have been expanded to the alkenyl system for the first time. In addition, instead of leading to the formation of simple carbamothioates, the rearrangement has led to the unprecedented construction of S-heteroaryls. Depending on the differences in the enaminone structure, the efficient synthesis of functionalized isothiazoles and thiophenes has been achieved.
Collapse
Affiliation(s)
- Yunyun Liu
- National Engineering Research Center for Carbohydrate Synthesis, College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, P.R. China
| | - Leiling Deng
- National Engineering Research Center for Carbohydrate Synthesis, College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, P.R. China
| | - Haijin Guo
- National Engineering Research Center for Carbohydrate Synthesis, College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, P.R. China
| | - Jie-Ping Wan
- National Engineering Research Center for Carbohydrate Synthesis, College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, P.R. China
| |
Collapse
|
2
|
Mondal S, Giri CK, Baidya M. Enaminone-directed ruthenium(II)-catalyzed C-H activation and annulation of arenes with diazonaphthoquinones for polycyclic benzocoumarins. Chem Commun (Camb) 2023; 59:13187-13190. [PMID: 37850468 DOI: 10.1039/d3cc03999d] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2023]
Abstract
The weakly coordinating enaminone functionality has been leveraged for a C-H bond activation strategy under ruthenium catalysis and employed in the regioselective annulative coupling of arenes with diazonaphthoquinones, offering polycyclic benzocoumarins in very high yields. The enaminone motif plays a dual role and the protocol operates through a Ru(II)/Ru(IV) catalytic pathway which is amenable to the diversification of various pharmacophore-coupled substrates.
Collapse
Affiliation(s)
- Sudeshna Mondal
- Department of Chemistry, Indian Institute of Technology Madras, Chennai 600 036, Tamil Nadu, India.
| | - Chandan Kumar Giri
- Department of Chemistry, Indian Institute of Technology Madras, Chennai 600 036, Tamil Nadu, India.
| | - Mahiuddin Baidya
- Department of Chemistry, Indian Institute of Technology Madras, Chennai 600 036, Tamil Nadu, India.
| |
Collapse
|
3
|
Zhang M, Chen L, Sun H, Liu Z, Yan SJ, Yu F. Rh(III)-Catalyzed [3 + 2] Annulation/Pinacol Rearrangement Reaction of Enaminones with Iodonium Ylides: Direct Synthesis of 2-Spirocyclo-pyrrol-3-ones. Org Lett 2023; 25:7214-7219. [PMID: 37751319 DOI: 10.1021/acs.orglett.3c02810] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/28/2023]
Abstract
A novel Rh(III)-catalyzed cascade alkenyl C-H activation/[3 + 2] annulation/pinacol rearrangement reaction of enaminones with iodonium ylides has been developed. This methodology provides a new and straightforward synthetic strategy to afford highly functionalized 2-spirocyclo-pyrrol-3-ones in satisfactory yield from readily available starting materials under mild conditions. Moreover, gram-scale reactions and further derivatization experiments are implemented to demonstrate the potential utility of this developed approach.
Collapse
Affiliation(s)
- Mingshuai Zhang
- Faculty of Life Science and Technology, Kunming, University of Science and Technology, Kunming 650500, People's Republic of China
| | - Longkun Chen
- Faculty of Life Science and Technology, Kunming, University of Science and Technology, Kunming 650500, People's Republic of China
| | - Haifeng Sun
- Faculty of Life Science and Technology, Kunming, University of Science and Technology, Kunming 650500, People's Republic of China
| | - Zhuoyuan Liu
- Faculty of Life Science and Technology, Kunming, University of Science and Technology, Kunming 650500, People's Republic of China
| | - Sheng-Jiao Yan
- Key Laboratory of Medicinal Chemistry for Natural Resources, Ministry of Education and Yunnan Province, School of Chemical Science and Technology, Yunnan University, Kunming 650091, People's Republic of China
| | - Fuchao Yu
- Faculty of Life Science and Technology, Kunming, University of Science and Technology, Kunming 650500, People's Republic of China
| |
Collapse
|
4
|
Gao H, Zhou L, Wan JP, Liu Y. Rongalite as C1 Synthon in the Synthesis of Divergent Pyridines and Quinolines. J Org Chem 2023. [PMID: 37171406 DOI: 10.1021/acs.joc.3c00428] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
Rongalite has been used as a cheap and efficient carbon synthon for the synthesis of divergent N-heteroaromatics, including different pyridines and quinolines. The selective synthesis of different products can be achieved by employing enaminones or enaminones/anilines as reaction partners. In addition, compared with the reaction using conventional aldehyde synthons, rongalite displays an evident advantage in providing products with considerably higher product yields under milder conditions. The GC-MS analysis of the reaction process has been performed to probe the possible reaction mechanism.
Collapse
Affiliation(s)
- Huan Gao
- National Engineering Research Center for Carbohydrate Synthesis, College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, China
| | - Liyun Zhou
- National Engineering Research Center for Carbohydrate Synthesis, College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, China
| | - Jie-Ping Wan
- National Engineering Research Center for Carbohydrate Synthesis, College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, China
| | - Yunyun Liu
- National Engineering Research Center for Carbohydrate Synthesis, College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, China
- International Innovation Center for Forest Chemicals and Materials, Nanjing Forestry University, Nanjing 210037, China
| |
Collapse
|
5
|
Suresh V, Naveen Kumar M, Nagireddy A, Sridhar Reddy M. Rhodium‐Catalyzed Dual C−H Activation for Regioselective Triple Annulation of Enaminones: Access to Polycyclic Naphthopyran Derivatives. Adv Synth Catal 2023. [DOI: 10.1002/adsc.202300131] [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)
- Vavilapalli Suresh
- OSPC Division CSIR-Indian Institute of Chemical Technology Habsiguda Hyderabad 500007 India
- Academy of Scientific and Innovative Research Ghaziabad 201002 India
| | - Muniganti Naveen Kumar
- OSPC Division CSIR-Indian Institute of Chemical Technology Habsiguda Hyderabad 500007 India
- Academy of Scientific and Innovative Research Ghaziabad 201002 India
| | - Attunuri Nagireddy
- OSPC Division CSIR-Indian Institute of Chemical Technology Habsiguda Hyderabad 500007 India
- Academy of Scientific and Innovative Research Ghaziabad 201002 India
| | - Maddi Sridhar Reddy
- OSPC Division CSIR-Indian Institute of Chemical Technology Habsiguda Hyderabad 500007 India
- Academy of Scientific and Innovative Research Ghaziabad 201002 India
| |
Collapse
|
6
|
Liu D, Song S, Chen L, Zhang M, Liu Z, Lu X, Huang J, Yu F. Access to thiionized-, selenolized-, and alkylated 5-alkylidene 3-pyrrolin-2-one derivatives via a regioselective oxidative annulation reaction. Org Biomol Chem 2023; 21:2596-2602. [PMID: 36891944 DOI: 10.1039/d3ob00014a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/06/2023]
Abstract
A metal-free regioselective oxidative annulation reaction of readily available 2,4-pentanediones with primary amines has been described. This protocol provides a divergent strategy for the incorporation of various radical donors into 5-alkylidene 3-pyrrolin-2-one skeletons, producing a variety of thiionized-, selenolized-, and alkylated 5-alkylidene 3-pyrrolin-2-one derivatives. Moreover, the diverse synthetic transformations of the 5-alkylidene 3-pyrrolin-2-one products were also investigated.
Collapse
Affiliation(s)
- Donghan Liu
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming, 650500, P. R. China.
| | - Siyu Song
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming, 650500, P. R. China.
| | - Longkun Chen
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming, 650500, P. R. China.
| | - Mingshuai Zhang
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming, 650500, P. R. China.
| | - Zhuoyuan Liu
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming, 650500, P. R. China.
| | - Xihang Lu
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming, 650500, P. R. China.
| | - Jiuzhong Huang
- School of Pharmacy and Key Laboratory of Prevention and Treatment of Cardiovascular and Cerebrovascular Diseases of Ministry of Education, Gannan Medical University, Ganzhou, 341000, P. R. China.
| | - Fuchao Yu
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming, 650500, P. R. China.
| |
Collapse
|
7
|
Chen D, Wan C, Liu Y, Wan JP. Three-Component Fusion to Pyrazolo[5,1- a]isoquinolines via Rh-Catalyzed Multiple Order Transformation of Enaminones. J Org Chem 2023; 88:4833-4838. [PMID: 36947699 DOI: 10.1021/acs.joc.3c00019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/24/2023]
Abstract
A facile and practical method for the synthesis of fused tricyclic pyrazolo[5,1-a]isoquinolines has been realized via the reactions of enaminones, hydrazine hydrochloride, and internal alkynes. By means of Rh catalysis, the extraordinary high-order bond functionalization, including the transformation of aryl C-H, ketone C═O, and alkenyl C-N bonds in the enaminones, marks the major feature of the cascade reactions. The results disclose the individual advantage of enaminones in the design of novel and efficient synthetic methods.
Collapse
Affiliation(s)
- Demao Chen
- National Engineering Research Center for Carbohydrate Synthesis, College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang, Jiangxi 330022, P. R. China
| | - Changfeng Wan
- National Engineering Research Center for Carbohydrate Synthesis, College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang, Jiangxi 330022, P. R. China
| | - Yunyun Liu
- National Engineering Research Center for Carbohydrate Synthesis, College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang, Jiangxi 330022, P. R. China
| | - Jie-Ping Wan
- National Engineering Research Center for Carbohydrate Synthesis, College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang, Jiangxi 330022, P. R. China
- International Innovation Center for Forest Chemicals and Materials, Nanjing Forestry University, Nanjing, Jiangsu 210037, P. R. China
| |
Collapse
|
8
|
Chen D, Zhou L, Liu Y, Wan JP. Three-component synthesis of N-naphthyl pyrazoles via Rh(III)-catalyzed cascade pyrazole annulation and Satoh-Miura benzannulation. Chem Commun (Camb) 2023; 59:4036-4039. [PMID: 36924202 DOI: 10.1039/d3cc00649b] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/12/2023]
Abstract
The synthesis of N-naphthyl pyrazoles has been realized by the direct three-component reactions of enaminones, aryl hydrazine hydrochlorides and internal alkynes via Rh(III) catalysis. The synthetic reactions employing simple substrates lead to simultaneous construction of dual cyclic moieties, including a pyrazole ring and a phenyl ring, via sequential formation of two C-N and three C-C bonds.
Collapse
Affiliation(s)
- Demao Chen
- National Engineering Research Center for Carbohydrate Synthesis, College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, China.
| | - Liyun Zhou
- National Engineering Research Center for Carbohydrate Synthesis, College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, China.
| | - Yunyun Liu
- National Engineering Research Center for Carbohydrate Synthesis, College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, China.
| | - Jie-Ping Wan
- National Engineering Research Center for Carbohydrate Synthesis, College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, China. .,International Innovation Center for Forest Chemicals and Materials, Nanjing Forestry University, Nanjing 210037, China
| |
Collapse
|
9
|
Xu H, Wang B, Li FY, Wang JY. B(C 6F 5) 3-Catalyzed [4 + 2] Cyclization Strategy: Synthesis and Photophysical Properties of 5 H-Naphtho[2,3- c]carbazole-8,13-dione Derivatives. J Org Chem 2023. [PMID: 36800394 DOI: 10.1021/acs.joc.2c02064] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/18/2023]
Abstract
In this paper, a series of novel carbazolequinones were efficiently obtained by a B(C6F5)3-catalyzed [4 + 2] cyclization reaction. This protocol not only had a simple operation, broad substrate range, and high atomic economy, but also had a low catalyst loading and avoided using metal catalysts. In addition, we constructed diverse new carbazole-fused compounds under different reduction conditions. The results of photophysical characterization showed that the structure of carbazole-fused derivatives had a significant impact on the fluorescence properties.
Collapse
Affiliation(s)
- Hong Xu
- Department of Chemistry, Xihua University, Chengdu 610039, P. R. China.,Asymmetric Synthesis and Chiraltechnology Key Laboratory of Sichuan Province, Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu 610041, P. R. China.,University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Bei Wang
- Department of Chemistry, Xihua University, Chengdu 610039, P. R. China.,Asymmetric Synthesis and Chiraltechnology Key Laboratory of Sichuan Province, Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu 610041, P. R. China.,University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Fu-Yu Li
- Department of Chemistry, Xihua University, Chengdu 610039, P. R. China.,Asymmetric Synthesis and Chiraltechnology Key Laboratory of Sichuan Province, Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu 610041, P. R. China.,University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Ji-Yu Wang
- Department of Chemistry, Xihua University, Chengdu 610039, P. R. China.,Asymmetric Synthesis and Chiraltechnology Key Laboratory of Sichuan Province, Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu 610041, P. R. China
| |
Collapse
|
10
|
Tian S, Liu Y, Wan C, Wan JP, Hao G. Catalyst-Free Cascade Annulation of Enaminones and Aryl Diazonium Tetrafluoroboronates for Cinnoline Synthesis and the Anti-Inflammatory Activity Study. J Org Chem 2023; 88:2433-2442. [PMID: 36753776 DOI: 10.1021/acs.joc.2c02858] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/10/2023]
Abstract
A simple and concise method for the synthesis of cinnolines has been developed by the reactions of readily available enaminones and aryl diazonium tetrafluoroboronates. The reactions run efficiently to provide cinnolines with broad diversity in the substructure by heating in dimethyl sulfoxide without using any catalyst or additive. In addition, the primary investigation of the anti-inflammatory activity of these products leads to the observation of p-chlorobenzoyl (3f) and p-nitrobenzoyl (3j) cinnolines as attractive anti-inflammatory compounds in vitro.
Collapse
Affiliation(s)
- Shanghui Tian
- National Engineering Research Center for Carbohydrate Synthesis, College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, China
| | - Yunyun Liu
- National Engineering Research Center for Carbohydrate Synthesis, College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, China
| | - Changfeng Wan
- National Engineering Research Center for Carbohydrate Synthesis, College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, China
| | - Jie-Ping Wan
- National Engineering Research Center for Carbohydrate Synthesis, College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, China.,International Innovation Center for Forest Chemicals and Materials, Nanjing Forestry University, Nanjing 210037, China
| | - Guifeng Hao
- Center for General Practice Medicine, Department of Rheumatology and Immunology, Zhejiang Provincial People's Hospital (Affiliated People's Hospital, Hangzhou Medical College), Hangzhou 310014, China
| |
Collapse
|
11
|
Yang Z, Liu C, Lei J, Zhou Y, Gao X, Li Y. Rh(III)-catalyzed C-H/C-C bond annulation of enaminones with iodonium ylides to form isocoumarins. Chem Commun (Camb) 2022; 58:13483-13486. [PMID: 36383089 DOI: 10.1039/d2cc05899e] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
A straightforward approach to synthesise isocoumarins via Rh(III)-catalyzed C-H/C-C bond activation/annulation cascade of enaminones and iodonium ylides has been explored. The established protocol is characterized by an exceedingly simple reaction system, high regioselectivity and good functional group tolerance. Moreover, this strategy may provide a new route to cleavage of the C(sp2)-C(O) bond of unstrained ketones.
Collapse
Affiliation(s)
- Zi Yang
- Academician Workstation, Changsha Medical University, Changsha 410219, P. R. China.
| | - Chaoshui Liu
- Hunan Key Laboratory of the Research and Development of Novel Pharmaceutical Preparations, Changsha Medical University, Changsha 410219, P. R. China
| | - Jieni Lei
- Academician Workstation, Changsha Medical University, Changsha 410219, P. R. China.
| | - Yi Zhou
- Academician Workstation, Changsha Medical University, Changsha 410219, P. R. China.
| | - Xiaohui Gao
- Academician Workstation, Changsha Medical University, Changsha 410219, P. R. China.
| | - Yaqian Li
- Academician Workstation, Changsha Medical University, Changsha 410219, P. R. China.
| |
Collapse
|
12
|
Chen K, Zhao B, Liu Y, Wan JP. Thiazole-5-carbaldehyde Synthesis by Cascade Annulation of Enaminones and KSCN with Dess-Martin Periodinane Reagent. J Org Chem 2022; 87:14957-14964. [PMID: 36260927 DOI: 10.1021/acs.joc.2c01881] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
The Dess-Martin periodinane (DMP) reagent-mediated reactions of tertiary enaminones with potassium thiocyanate for the synthesis of thiazole-5-carbaldehydes are developed. The product formation involves cascade hydroxyl thiocyanation of the C═C double bond, intramolecular hydroamination of the C≡N bond, and thiazole annulation by condensation on the ketone carbonyl site, representing novel reaction pathways in the reactions between enaminones and thiocyanate salt. DMP plays dual roles in mediating the free radical thiocyanation and inducing the unconventional selective thiazole-5-carbaldehyde formation by masking the in situ generated formyl group during the reaction process.
Collapse
Affiliation(s)
- Kang Chen
- National Research Center for Carbohydrate Synthesis, Key Lab of Fluorine and Silicon for Energy Materials and Chemistry of Ministry of Education, College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, PR China
| | - Baoli Zhao
- Zhejiang Key Laboratory of Alternative Technologies for Fine Chemicals Process, Shaoxing University, Shaoxing, Zhejiang 312000, PR China
| | - Yunyun Liu
- National Research Center for Carbohydrate Synthesis, Key Lab of Fluorine and Silicon for Energy Materials and Chemistry of Ministry of Education, College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, PR China.,Zhejiang Key Laboratory of Alternative Technologies for Fine Chemicals Process, Shaoxing University, Shaoxing, Zhejiang 312000, PR China
| | - Jie-Ping Wan
- National Research Center for Carbohydrate Synthesis, Key Lab of Fluorine and Silicon for Energy Materials and Chemistry of Ministry of Education, College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, PR China
| |
Collapse
|
13
|
Huo J, Geng X, Li W, Zhang P, Wang L. Photoinduced Three‐Component Cyclization of Arylamines, Enaminones and Difluorobromoacetates to 2,3‐Difunctionalized Quinolines. Adv Synth Catal 2022. [DOI: 10.1002/adsc.202200615] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
| | | | | | | | - Lei Wang
- Huaibei Coal Teachers College CHINA
| |
Collapse
|
14
|
Zheng F, Zhou J, Fang F, Li J, Wang J, Zheng M, Liu H, Xu Y, Zhou Y. Rh(III)-Catalyzed C-H Activation and [4+1+1] Sequential Cyclization Cascade to Give Highly Fused Indano[1,2- b]azirines. Org Lett 2022; 24:5688-5692. [PMID: 35921178 DOI: 10.1021/acs.orglett.2c02070] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A Rh(III)-catalyzed C-H activation of α-keto oximes and a cyclization cascade with diazo compounds were developed to construct the highly fused indano[1,2-b]azirine frameworks in good yields with a broad range of substrates under mild reaction conditions. More intriguingly, a [4+1+1] sequential annulation cascade is demonstrated for the first time in this reaction and opened a new reaction mode for α-keto oximes. These fused indano[1,2-b]azirine derivatives could also be further transformed into intriguing privileged drug scaffolds.
Collapse
Affiliation(s)
- Fuqiang Zheng
- Department of Medicinal Chemistry, China Pharmaceutical University, Nanjing 210009, China.,State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zu Chong Zhi Road, Shanghai 201203, China
| | - Jianhui Zhou
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zu Chong Zhi Road, Shanghai 201203, China
| | - Feifei Fang
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zu Chong Zhi Road, Shanghai 201203, China
| | - Jiyuan Li
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zu Chong Zhi Road, Shanghai 201203, China
| | - Jing Wang
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zu Chong Zhi Road, Shanghai 201203, China
| | - Miao Zheng
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zu Chong Zhi Road, Shanghai 201203, China
| | - Hong Liu
- Department of Medicinal Chemistry, China Pharmaceutical University, Nanjing 210009, China.,State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zu Chong Zhi Road, Shanghai 201203, China.,School of Pharmaceutical Science and Technology, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou 310024, China
| | - Yungen Xu
- Department of Medicinal Chemistry, China Pharmaceutical University, Nanjing 210009, China
| | - Yu Zhou
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zu Chong Zhi Road, Shanghai 201203, China.,School of Pharmaceutical Science and Technology, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou 310024, China
| |
Collapse
|
15
|
Dattatri, Singam MKR, Nanubolu JB, Reddy MS. Cu-Catalyzed tandem cyclization and coupling of enynones with enaminones for multisubstituted furans & furano-pyrroles. Org Biomol Chem 2022; 20:6363-6367. [PMID: 35861157 DOI: 10.1039/d2ob00839d] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A synthetic strategy that efficiently constructs complex molecular diversity in a few steps will always be embraced by organic chemists. Here, we report a cascade reaction of enynones with enaminones via carbene insertion and aryl migration to engineer distinctive multisubstituted furans with an all-carbon quaternary center, and could extend the protocol in the same pot towards furano-pyrrole bis-heterocycles. Heterogeneity of this protocol was proved with the upshot of divergent chemical space under a relatively mild reaction environment.
Collapse
Affiliation(s)
- Dattatri
- Department of OSPC, CSIR-Indian Institute of Chemical Technology, Habsiguda, Hyderabad 500007, India. .,Academy of Scientific and Innovative Research, Ghaziabad 201002, India
| | - Maneesh Kumar Reddy Singam
- Department of OSPC, CSIR-Indian Institute of Chemical Technology, Habsiguda, Hyderabad 500007, India. .,Academy of Scientific and Innovative Research, Ghaziabad 201002, India
| | | | - Maddi Sridhar Reddy
- Department of OSPC, CSIR-Indian Institute of Chemical Technology, Habsiguda, Hyderabad 500007, India. .,Academy of Scientific and Innovative Research, Ghaziabad 201002, India
| |
Collapse
|
16
|
Jamshaid S, Lee YR. Lewis-Acid-Catalyzed Regioselective Construction of Diversely Functionalized Polycyclic Fused Furans. Org Lett 2022; 24:1351-1356. [PMID: 35118858 DOI: 10.1021/acs.orglett.2c00019] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A novel, facile, and efficient Lewis-acid-catalyzed [4 + 1] annulation protocol for the construction of functionalized polycyclic-fused furans is developed. This methodology is free of transition metals and ligands and provides a rapid synthetic route to divergently orientated polycyclic furans in good yields. In addition, this protocol can also be used to synthesize multisubstituted furans.
Collapse
Affiliation(s)
- Sana Jamshaid
- School of Chemical Engineering, Yeungnam University, Gyeongsan 38541, Republic of Korea
| | - Yong Rok Lee
- School of Chemical Engineering, Yeungnam University, Gyeongsan 38541, Republic of Korea
| |
Collapse
|
17
|
Yu JX, Wu LJ, Wang ZQ, Xu ZF, Li JH. Palladium-catalyzed alkynylative [5 + 1] carboannulation of 1,3-diarylprop-2-yn-1-yl acetates with terminal alkynes enabled by C–H functionalization. Org Chem Front 2022. [DOI: 10.1039/d1qo01836a] [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
Using 1,3-diarylprop-2-yn-1-yl acetates as the five-carbon components enables alkynylative[5 + 1] carboannulation involving C–H functionalization toward 3-ethynyl-1-methylene-1,2-dihydronaphthalenes.
Collapse
Affiliation(s)
- Jiang-Xi Yu
- Key Laboratory of Functional Meta-Organic Compounds of Hunan Province, Key Laboratory of Functional Organometallic Materials (University of Hunan Province), Hengyang Normal University, Hengyang 421008, China
| | - Li-Jun Wu
- College of Sciences, Central South University of Forestry and Technology, Changsha, 410004, China
| | - Zhi-Qiang Wang
- Key Laboratory of Functional Meta-Organic Compounds of Hunan Province, Key Laboratory of Functional Organometallic Materials (University of Hunan Province), Hengyang Normal University, Hengyang 421008, China
| | - Zhi-Feng Xu
- Key Laboratory of Functional Meta-Organic Compounds of Hunan Province, Key Laboratory of Functional Organometallic Materials (University of Hunan Province), Hengyang Normal University, Hengyang 421008, China
| | - Jin-Heng Li
- Key Laboratory of Functional Meta-Organic Compounds of Hunan Province, Key Laboratory of Functional Organometallic Materials (University of Hunan Province), Hengyang Normal University, Hengyang 421008, China
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University, Nanchang 330063, China
- School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 475004, China
| |
Collapse
|
18
|
Zhang H, Zeng Z, Yang Y, Tang J, Zhang S, Yi W, Zhou Z. Site-selective rhodium carbene transfer of 2 hydroxy-β-nitrostyrenes with diazo compounds En route to 2-alkylated benzofurans. Org Chem Front 2022. [DOI: 10.1039/d2qo00475e] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
The Rh(iii)-catalysed cascade vinylic C–H functionalization/carbene transfer/Michael addition sequence of 2-hydroxy-β-nitrostyrenes has been realized, delivering the 2-alkylated benzofuran derivatives as potential tyrosinase inhibitors.
Collapse
Affiliation(s)
- Haiman Zhang
- Guangzhou Municipal and Guangdong Provincial Key Laboratory of Molecular Target & Clinical Pharmacology, the NMPA and State Key Laboratory of Respiratory Disease, School of Pharmaceutical Sciences and the Fifth Affiliated Hospital, Guangzhou Medical University, Guangzhou, Guangdong 511436, P. R. China
| | - Zhongyi Zeng
- Guangzhou Municipal and Guangdong Provincial Key Laboratory of Molecular Target & Clinical Pharmacology, the NMPA and State Key Laboratory of Respiratory Disease, School of Pharmaceutical Sciences and the Fifth Affiliated Hospital, Guangzhou Medical University, Guangzhou, Guangdong 511436, P. R. China
| | - Yurong Yang
- Guangzhou Municipal and Guangdong Provincial Key Laboratory of Molecular Target & Clinical Pharmacology, the NMPA and State Key Laboratory of Respiratory Disease, School of Pharmaceutical Sciences and the Fifth Affiliated Hospital, Guangzhou Medical University, Guangzhou, Guangdong 511436, P. R. China
| | - Junyuan Tang
- Guangzhou Municipal and Guangdong Provincial Key Laboratory of Molecular Target & Clinical Pharmacology, the NMPA and State Key Laboratory of Respiratory Disease, School of Pharmaceutical Sciences and the Fifth Affiliated Hospital, Guangzhou Medical University, Guangzhou, Guangdong 511436, P. R. China
| | - Silin Zhang
- Guangzhou Municipal and Guangdong Provincial Key Laboratory of Molecular Target & Clinical Pharmacology, the NMPA and State Key Laboratory of Respiratory Disease, School of Pharmaceutical Sciences and the Fifth Affiliated Hospital, Guangzhou Medical University, Guangzhou, Guangdong 511436, P. R. China
| | - Wei Yi
- Guangzhou Municipal and Guangdong Provincial Key Laboratory of Molecular Target & Clinical Pharmacology, the NMPA and State Key Laboratory of Respiratory Disease, School of Pharmaceutical Sciences and the Fifth Affiliated Hospital, Guangzhou Medical University, Guangzhou, Guangdong 511436, P. R. China
| | - Zhi Zhou
- Guangzhou Municipal and Guangdong Provincial Key Laboratory of Molecular Target & Clinical Pharmacology, the NMPA and State Key Laboratory of Respiratory Disease, School of Pharmaceutical Sciences and the Fifth Affiliated Hospital, Guangzhou Medical University, Guangzhou, Guangdong 511436, P. R. China
| |
Collapse
|
19
|
Nagireddy A, Dattatri, Kotipalli R, Nanubolu JB, Reddy MS. Rhodium-Catalyzed Regioselective Double Annulation of Enaminones with Propargyl Alcohols: Rapid Access to Arylnapthalene Lignan Derivatives. J Org Chem 2021; 87:1240-1248. [PMID: 34965126 DOI: 10.1021/acs.joc.1c02575] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
We present here a rhodium-catalyzed oxidative three-point double annulation of enaminones with propargylic alcohols via a C-H and a C-N bond activation to access arylnaphthalene-based lignan derivatives. The key step in the reaction is the regioselective insertion of propargylic alcohol into the rhoda-cycle, a result of hydroxyl rhodium coordination. Necessary control experiments and KIE studies were conducted to determine the mechanism.
Collapse
Affiliation(s)
- Attunuri Nagireddy
- Department of Oraganic Syntheis & Process Chemistry, CSIR-Indian Institute of Chemical Technology, Hyderabad 500007, India.,Academy of Scientific and Innovative Research, Ghaziabad 201002, India
| | - Dattatri
- Department of Oraganic Syntheis & Process Chemistry, CSIR-Indian Institute of Chemical Technology, Hyderabad 500007, India.,Academy of Scientific and Innovative Research, Ghaziabad 201002, India
| | - Ramesh Kotipalli
- Department of Oraganic Syntheis & Process Chemistry, CSIR-Indian Institute of Chemical Technology, Hyderabad 500007, India.,Academy of Scientific and Innovative Research, Ghaziabad 201002, India
| | | | - Maddi Sridhar Reddy
- Department of Oraganic Syntheis & Process Chemistry, CSIR-Indian Institute of Chemical Technology, Hyderabad 500007, India.,Academy of Scientific and Innovative Research, Ghaziabad 201002, India
| |
Collapse
|
20
|
Fang RJ, Yan C, Sun J, Han Y, Yan CG. Efficient synthesis of polyfunctionalized carbazoles and pyrrolo[3,4 -c]carbazoles via domino Diels-Alder reaction. Beilstein J Org Chem 2021; 17:2425-2432. [PMID: 34621404 PMCID: PMC8450976 DOI: 10.3762/bjoc.17.159] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2021] [Accepted: 09/06/2021] [Indexed: 12/15/2022] Open
Abstract
The p-TsOH-catalyzed Diels–Alder reaction of 3-(indol-3-yl)maleimides with chalcone in toluene at 60 °C afforded two diastereoisomers of tetrahydropyrrolo[3,4-c]carbazoles, which can be dehydrogenated by DDQ oxidation in acetonitrile at room temperature to give the aromatized pyrrolo[3,4-c]carbazoles in high yields. On the other hand, the one-pot reaction of 3-(indol-3-yl)-1,3-diphenylpropan-1-ones with chalcones or benzylideneacetone in acetonitrile in the presence of p-TsOH and DDQ resulted in polyfunctionalized carbazoles in satisfactory yields. The reaction mechanism included the DDQ oxidative dehydrogenation of 3-(indol-3-yl)-1,3-diphenylpropan-1-ones to the corresponding 3-vinylindoles, their acid-catalyzed Diels–Alder reaction and sequential aromatization process.
Collapse
Affiliation(s)
- Ren-Jie Fang
- College of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, China
| | - Chen Yan
- College of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, China
| | - Jing Sun
- College of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, China
| | - Ying Han
- College of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, China
| | - Chao-Guo Yan
- College of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, China
| |
Collapse
|
21
|
Yan C, Sun J, Han Y, Yan C. Domino Reaction for Synthesis of Spiro[pyrazole‐4,5′‐pyrrolo[3,4‐
c
]carbazoles] and Spiro[pyrrolo[3,4‐
c
]carbazole‐5,5′‐thiazoles]. ASIAN J ORG CHEM 2021. [DOI: 10.1002/ajoc.202100462] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Chen Yan
- College of Chemistry & Chemical Engineering Yangzhou University Yangzhou 225002 P. R. China
| | - Jing Sun
- College of Chemistry & Chemical Engineering Yangzhou University Yangzhou 225002 P. R. China
| | - Ying Han
- College of Chemistry & Chemical Engineering Yangzhou University Yangzhou 225002 P. R. China
| | - Chao‐Guo Yan
- College of Chemistry & Chemical Engineering Yangzhou University Yangzhou 225002 P. R. China
| |
Collapse
|
22
|
Liu T, Wan JP, Liu Y. Metal-free enaminone C-N bond cyanation for the stereoselective synthesis of ( E)- and ( Z)-β-cyano enones. Chem Commun (Camb) 2021; 57:9112-9115. [PMID: 34498638 DOI: 10.1039/d1cc03292e] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
A highly practical method for C-CN bond formation by C-N bond cleavage on enaminones leading to the efficient synthesis of β-cyano enones is developed. The reactions take place efficiently to provide (E)-β-cyano enones with only a molecular iodine catalyst. In addition, the additional employment of oxalic acid enables the selective synthesis of (Z)-β-cyano enones.
Collapse
Affiliation(s)
- Ting Liu
- College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, P. R. China.
| | - Jie-Ping Wan
- College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, P. R. China.
| | - Yunyun Liu
- College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, P. R. China.
| |
Collapse
|
23
|
Wang X, Lou C, Lv L, Li Z. Annulative π-Extension (APEX) of Indoles to Pyrido[1,2- a]indoles Using 4-Oxo Peroxides as C4 Units. Org Lett 2021; 23:5978-5982. [PMID: 34263600 DOI: 10.1021/acs.orglett.1c02062] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Annulative π-extension (APEX) of 3-substituted indoles to pyrido[1,2-a]indoles is developed by using 4-oxo peroxides as π-extending reagents, which are employed as versatile C4 building blocks. This transformation is initiated by Brønsted acid-mediated Hock rearrangement of the peroxyl group. Notably, the pyrido[1,2-a]indole products are obtained by elimination of the indole moiety from the corresponding dihydropyrido[1,2-a]indoles, which could be selectively formed at room temperature.
Collapse
Affiliation(s)
- Xin Wang
- Department of Chemistry, Renmin University of China, Beijing 100872, China
| | - Chenhao Lou
- Department of Chemistry, Renmin University of China, Beijing 100872, China
| | - Leiyang Lv
- Department of Chemistry, Renmin University of China, Beijing 100872, China
| | - Zhiping Li
- Department of Chemistry, Renmin University of China, Beijing 100872, China
| |
Collapse
|