1
|
Debnath C, Bhoi SR, Gandhi S. N-Heterocyclic carbene/palladium synergistic catalysis in organic synthesis. Org Biomol Chem 2024; 22:4613-4624. [PMID: 38804684 DOI: 10.1039/d4ob00525b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/29/2024]
Abstract
The cooperation of two distinct catalytic cycles to activate different reactive centers leading to a chemical transformation has been classified as synergistic catalysis. The synergistic combination of NHC with palladium catalysis has emerged as a powerful strategy in the last few years. Merging the ability of NHCs to inverse the polarity of a functional group with the unique reactivity of palladium enables transformations that cannot be accomplished by either of these catalysts alone. Despite the associated challenges, such as quenching of catalysts, reactivity mismatch etc., significant development has been achieved in the field of NHC/Pd synergistic catalysis. The recent incorporation of photoredox catalysis with NHC/Pd synergistic catalysis has further advanced this area. This review highlights the developments made in the area of NHC/Pd synergistic catalysis.
Collapse
Affiliation(s)
- Chhanda Debnath
- Department of Chemical Sciences, Indian Institute of Science Education and Research Berhampur, 760010, India.
| | - Saswat Ranjan Bhoi
- Department of Chemical Sciences, Indian Institute of Science Education and Research Berhampur, 760010, India.
| | - Shikha Gandhi
- Department of Chemical Sciences, Indian Institute of Science Education and Research Berhampur, 760010, India.
| |
Collapse
|
2
|
Zhao H, Yao L, Gu Y, Niu Y, Han B, Huang W, Zhan G. Cooperative Gold(I)/DMAP Catalysis Enabled (2 + 3) Cycloadditions of Yne-Enones with Oxindole-Derived MBH Carbonates. Org Lett 2024; 26:3790-3795. [PMID: 38666755 DOI: 10.1021/acs.orglett.4c00916] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/12/2024]
Abstract
A cooperative gold(I)/DMAP system catalyzes the (2 + 3) cycloadditions of yne-enones with oxindole-derived Morita-Baylis-Hillman (MBH) carbonates, yielding diverse bispiro-cyclopentene oxindole products. The mild, scalable protocol demonstrates broad substrate scope and excellent chemo- and diastereoselectivity. Mechanistic study reveals pivotal roles of both catalysts in the unique (2 + 3) cycloaddition. This strategy showcases superiority in achieving transformation with unique chemoselectivity and excellent diastereoselectivity, unattainable through traditional monocatalytic methodologies.
Collapse
Affiliation(s)
- Hongli Zhao
- State Key Laboratory of Southwestern Chinese Medicine Resources, Hospital of Chengdu University of Traditional Chinese Medicine, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, P.R. China
| | - Laiping Yao
- State Key Laboratory of Southwestern Chinese Medicine Resources, Hospital of Chengdu University of Traditional Chinese Medicine, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, P.R. China
| | - Yiqiao Gu
- State Key Laboratory of Southwestern Chinese Medicine Resources, Hospital of Chengdu University of Traditional Chinese Medicine, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, P.R. China
| | - Yadi Niu
- State Key Laboratory of Southwestern Chinese Medicine Resources, Hospital of Chengdu University of Traditional Chinese Medicine, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, P.R. China
| | - Bo Han
- State Key Laboratory of Southwestern Chinese Medicine Resources, Hospital of Chengdu University of Traditional Chinese Medicine, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, P.R. China
| | - Wei Huang
- State Key Laboratory of Southwestern Chinese Medicine Resources, Hospital of Chengdu University of Traditional Chinese Medicine, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, P.R. China
| | - Gu Zhan
- State Key Laboratory of Southwestern Chinese Medicine Resources, Hospital of Chengdu University of Traditional Chinese Medicine, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, P.R. China
| |
Collapse
|
3
|
Pegu C, Paroi B, Patil NT. Enantioselective merged gold/organocatalysis. Chem Commun (Camb) 2024. [PMID: 38451222 DOI: 10.1039/d4cc00114a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/08/2024]
Abstract
Gold complexes, because of their unique carbophilic nature, have evolved as efficient catalysts for catalyzing various functionalization reactions of C-C multiple bonds. However, the realization of enantioselective transformations via gold catalysis remains challenging due to the geometrical constraints and coordination behaviors of gold complexes. In this context, merged gold/organocatalysis has emerged as one of the intriguing strategies to achieve enantioselective transformations which could not be possible by using a single catalytic system. Historically, in 2009, this field started with the merging of gold with axially chiral Brønsted acids and chiral amines to achieve enantioselective transformations. Since then, based on the unique reactivity profiles offered by each catalyst, several reports utilizing gold in conjunction with various chiral organocatalysts such as amines, Brønsted acids, N-heterocyclic carbenes, hydrogen-bonding and phosphine catalysts have been documented in the literature. This article demonstrates an up-to-date development in this field, especially focusing on the mechanistic interplay of gold catalysts with chiral organocatalysts.
Collapse
Affiliation(s)
- Chayanika Pegu
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal Bypass Road, Bhauri, Bhopal-462066, India.
| | - Bidisha Paroi
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal Bypass Road, Bhauri, Bhopal-462066, India.
| | - Nitin T Patil
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal Bypass Road, Bhauri, Bhopal-462066, India.
| |
Collapse
|
4
|
Peng L, Wang M, Huang J, Guo C, Gong LZ, Song J. Enantio- and Diastereodivergent N-Heterocyclic Carbene/Nickel Dual-Catalyzed Umpolung Propargylic Substitutions of Enals. J Am Chem Soc 2023; 145:28085-28095. [PMID: 38032206 DOI: 10.1021/jacs.3c09569] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2023]
Abstract
The creation of full stereoisomers of an organic compound comprising multiple contiguous stereocenters with simultaneous control over both relative and absolute configurations remains a significant challenge in synthetic chemistry. Using a cooperative catalysis strategy, we established an N-heterocyclic carbene/nickel-catalyzed enantio- and diastereodivergent propargylation reaction to access 3,3'-disubstituted oxindoles, enabling the incorporation of internal alkyne functionality and the introduction of a single quaternary or vicinal quaternary/tertiary stereogenic center. By selecting the appropriate combination of catalyst chirality, all four potential stereoisomers of α-quaternary propargylated oxindoles were synthesized in a predictable and precise way with remarkable yields, diastereoselectivities, and enantioselectivities from identical starting materials. The synthetic utility of this method was demonstrated in the concise asymmetric total synthesis of (-)-debromoflustramine B and (-)-C(β-Me)-debromoflustramine B.
Collapse
Affiliation(s)
- Lingzi Peng
- Hefei National Research Center for Physical Sciences at the Microscale and Department of Chemistry, University of Science and Technology of China, Hefei 230026, China
| | - Mingxu Wang
- Hefei National Research Center for Physical Sciences at the Microscale and Department of Chemistry, University of Science and Technology of China, Hefei 230026, China
| | - Jianming Huang
- Institutes of Physical Science and Information Technology, Key Laboratory of Environment-Friendly Polymeric Materials of Anhui Province, Anhui University, Hefei 230601, China
| | - Chang Guo
- Hefei National Research Center for Physical Sciences at the Microscale and Department of Chemistry, University of Science and Technology of China, Hefei 230026, China
| | - Liu-Zhu Gong
- Hefei National Research Center for Physical Sciences at the Microscale and Department of Chemistry, University of Science and Technology of China, Hefei 230026, China
| | - Jin Song
- Institutes of Physical Science and Information Technology, Key Laboratory of Environment-Friendly Polymeric Materials of Anhui Province, Anhui University, Hefei 230601, China
| |
Collapse
|
5
|
Gao Y, Wang H, Chen X, Qiao Y, Miao Z. Gold and Palladium Relay Catalytic [4 + 4] Cycloadditions of Enynamides and γ-Methylene-δ-valerolactones: Diastereoselective Construction of Furan-Fused Azacyclooctanes. J Org Chem 2023; 88:11822-11833. [PMID: 37534854 DOI: 10.1021/acs.joc.3c01114] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/04/2023]
Abstract
We report a highly efficient and diastereoselective gold and palladium sequential relay catalysis system for the synthesis of furan-fused eight-membered heterocycles. Employing a one-pot procedure, easily accessible enynamides undergo cyclization to generate azadienes in situ, which subsequently participate in diastereoselective formal [4 + 4] cycloadditions with γ-methylene-δ-valerolactones. This strategy enables the rapid and efficient construction of a series of furan-fused azacyclooctanes with diverse substituents in good yields (63-97%) and a high level of diastereoselectivity (7:1 → 20:1 dr).
Collapse
Affiliation(s)
- Yanfeng Gao
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Weijin Road 94, Tianjin 300071, China
| | - Hui Wang
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Weijin Road 94, Tianjin 300071, China
| | - Xiaoquan Chen
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Weijin Road 94, Tianjin 300071, China
| | - Yiyang Qiao
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Weijin Road 94, Tianjin 300071, China
| | - Zhiwei Miao
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Weijin Road 94, Tianjin 300071, China
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300071, China
| |
Collapse
|
6
|
Jiang J, Zhou J, Li Y, Peng C, He G, Huang W, Zhan G, Han B. Silver/chiral pyrrolidinopyridine relay catalytic cycloisomerization/(2 + 3) cycloadditions of enynamides to asymmetrically synthesize bispirocyclopentenes as PDE1B inhibitors. Commun Chem 2023; 6:128. [PMID: 37337043 DOI: 10.1038/s42004-023-00921-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Accepted: 06/05/2023] [Indexed: 06/21/2023] Open
Abstract
Significant progress has been made in asymmetric synthesis through the use of transition metal catalysts combined with Lewis bases. However, the use of a dual catalytic system involving 4-aminopyridine and transition metal has received little attention. Here we show a metal/Lewis base relay catalytic system featuring silver acetate and a modified chiral pyrrolidinopyridine (PPY). It was successfully applied in the cycloisomerization/(2 + 3) cycloaddition reaction of enynamides. Bispirocyclopentene pyrazolone products could be efficiently synthesized in a stereoselective and economical manner (up to >19:1 dr, 99.5:0.5 er). Transformations of the product could access stereodivergent diastereoisomers and densely functionalized polycyclic derivatives. Mechanistic studies illustrated the relay catalytic model and the origin of the uncommon chemoselectivity. In subsequent bioassays, the products containing a privileged drug-like scaffold exhibited isoform-selective phosphodiesterase 1 (PDE1) inhibitory activity in vitro. The optimal lead compound displayed a good therapeutic effect for ameliorating pulmonary fibrosis via inhibiting PDE1 in vivo.
Collapse
Affiliation(s)
- Jing Jiang
- State Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, Sichuan, 611137, P.R. China
| | - Jin Zhou
- State Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, Sichuan, 611137, P.R. China
| | - Yang Li
- State Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, Sichuan, 611137, P.R. China
| | - Cheng Peng
- State Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, Sichuan, 611137, P.R. China
| | - Gu He
- State Key Laboratory of Biotherapy and Department of Pharmacy, West China Hospital Sichuan University, Chengdu, 610041, P.R. China
| | - Wei Huang
- State Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, Sichuan, 611137, P.R. China
| | - Gu Zhan
- State Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, Sichuan, 611137, P.R. China.
| | - Bo Han
- State Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, Sichuan, 611137, P.R. China.
| |
Collapse
|
7
|
Zhang B, Jin Z, Huang C, Zhang Y, Shen G, Kang H, Lv X, Zhou L. Highly Diastereoselective One-Pot Synthesis of 4,5-Dihydrofuro[2,3- b]azocin-6-one Derivatives through Cyclization/[4+4] Annulation Reactions. J Org Chem 2023. [PMID: 37155326 DOI: 10.1021/acs.joc.3c00003] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
A variety of 4,5-dihydrofuro[2,3-b]azocin-6-one derivatives were expediently assembled through Au(I)-catalyzed cyclization and 2-(tert-butyl)-1,1,3,3-tetramethylguanidine (BTMG)-mediated [4+4] annulation reactions of enyne-amides and ynones. The reactions exhibit high efficiency with excellent regio- and diastereoselectivity. A broad spectrum of substrates was utilized. The products with an eight-membered ring might be useful in biological chemistry and medicinal science. Furthermore, the products could be facilely converted into various derivatives.
Collapse
Affiliation(s)
- Bei Zhang
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, College of Chemistry and Materials Science, Zhejiang Normal University, Jinhua 321004, People's Republic of China
| | - Zefeng Jin
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, College of Chemistry and Materials Science, Zhejiang Normal University, Jinhua 321004, People's Republic of China
| | - Chaoman Huang
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, College of Chemistry and Materials Science, Zhejiang Normal University, Jinhua 321004, People's Republic of China
| | - Yankun Zhang
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, College of Chemistry and Materials Science, Zhejiang Normal University, Jinhua 321004, People's Republic of China
| | - Guodong Shen
- School of Chemistry and Chemical Engineering, Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology, Liaocheng University, Liaocheng 252059, Shandong, People's Republic of China
| | - Honglan Kang
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, College of Chemistry and Materials Science, Zhejiang Normal University, Jinhua 321004, People's Republic of China
| | - Xin Lv
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, College of Chemistry and Materials Science, Zhejiang Normal University, Jinhua 321004, People's Republic of China
| | - Liejin Zhou
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, College of Chemistry and Materials Science, Zhejiang Normal University, Jinhua 321004, People's Republic of China
| |
Collapse
|
8
|
Li S, Wen YH, Song J, Gong LZ. Asymmetric redox benzylation of enals enabled by NHC/Ru cooperative catalysis. SCIENCE ADVANCES 2023; 9:eadf5606. [PMID: 37075106 PMCID: PMC10115414 DOI: 10.1126/sciadv.adf5606] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
The development of general methods for asymmetric benzylation of prochiral carbon nucleophiles remains a challenge in organic synthesis. The merging of ruthenium catalysis and N-heterocyclic carbene (NHC) catalysis for asymmetric redox benzylation of enals has been achieved, which opens up strategic opportunities for the asymmetric benzylation reactions. A wide range of 3,3'-disubstituted oxindoles with a stereogenic quaternary carbon center widely existing in natural products and biologically interesting molecules is successfully obtained with excellent enantioselectivities [up to 99% enantiomeric excess (ee)]. The generality of this catalytic strategy was further highlighted by its successful application in the late-stage functionalization of oxindole skeletons. Furthermore, the linear correlation between ee values of NHC precatalyst and the product elucidated the independent catalytic cycle of either the NHC catalyst or the ruthenium complex.
Collapse
Affiliation(s)
- Shuai Li
- Hefei National Research Center for Physical Sciences at the Microscale and Department of Chemistry, University of Science and Technology of China, Hefei 230026, China
| | - Yu-Hua Wen
- Hefei National Research Center for Physical Sciences at the Microscale and Department of Chemistry, University of Science and Technology of China, Hefei 230026, China
| | - Jin Song
- Institutes of Physical Science and Information Technology, Key Laboratory of Environment-Friendly Polymeric Materials of Anhui Province, Anhui University, Hefei 230601, China
- Corresponding author. (L.-Z. G.); (J. S.)
| | - Liu-Zhu Gong
- Hefei National Research Center for Physical Sciences at the Microscale and Department of Chemistry, University of Science and Technology of China, Hefei 230026, China
- Center for Excellence in Molecular Synthesis of Chinese Academy of Sciences, Hefei 230026, China
- Corresponding author. (L.-Z. G.); (J. S.)
| |
Collapse
|
9
|
Wen YH, Yang F, Li S, Yao X, Song J, Gong LZ. Diastereodivergent Desymmetric Annulation to Access Spirooxindoles: Chemical Probes for Mitosis. J Am Chem Soc 2023; 145:4199-4207. [PMID: 36780205 DOI: 10.1021/jacs.2c12648] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/14/2023]
Abstract
Spirooxindoles have emerged as promising architectures for engineering biologically active compounds. The diastereodivergent construction of unique scaffolds of this type with full control of continuous chiral centers including an all-carbon quaternary stereogenic center is yet to be developed. Here, we report an unprecedented diastereodivergent desymmetric [3 + 3] annulation of oxabicyclic alkenes with enals enabled by N-heterocyclic carbene (NHC)/Rh cooperative catalysis, leading to a series of enantiomerically enriched spirooxindole lactones with excellent enantioselectivities (up to >99% ee) and diastereoselectivities (up to >95:5 dr). The combined catalyst system comprises a rhodium complex that controls the configuration at the electrophilic carbon and an NHC catalyst that controls the configuration at the nucleophilic oxindole-containing carbon; thus, four stereoisomers of the spirooxindole products can be readily obtained simply by switching the configurations of the two chiral catalysts. Transformations of the chiral spirooxindoles delivered synthetically useful compounds. Importantly, those chiral spirooxindoles arrested mammalian cells in mitosis and exhibited potent antiproliferative activities against HeLa cells. Significantly, both absolute and relative configurations exert prominent effects on the bioactivities, underscoring great importance of catalytic asymmetric diastereodivergent synthesis beyond creating useful tools for the exploration of structure-activity relationships.
Collapse
Affiliation(s)
- Yu-Hua Wen
- Hefei National Laboratory for Physical Sciences at the Microscale and Department of Chemistry, University of Science and Technology of China, Hefei 230026, China
| | - Fengrui Yang
- MOE Key Laboratory for Cellular Dynamics and Hefei National Center for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei 230026, China
| | - Shuai Li
- Hefei National Laboratory for Physical Sciences at the Microscale and Department of Chemistry, University of Science and Technology of China, Hefei 230026, China
| | - Xuebiao Yao
- MOE Key Laboratory for Cellular Dynamics and Hefei National Center for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei 230026, China
| | - Jin Song
- Institutes of Physical Science and Information Technology, Key Laboratory of Environment-Friendly Polymeric Materials of Anhui Province, Anhui University, Hefei 230601, China
| | - Liu-Zhu Gong
- Hefei National Laboratory for Physical Sciences at the Microscale and Department of Chemistry, University of Science and Technology of China, Hefei 230026, China
- Center for Excellence in Molecular Synthesis of Chinese Academy of Sciences, Hefei 230026, China
| |
Collapse
|
10
|
Yu J, Wang X, Xu M, Zhang B, Xiong Z, Mao H, Lv X, Zhou L. Synthesis of α-pyrones via gold-catalyzed cycloisomerization/[2 + 1] cycloaddition/rearrangement of enyne-amides and sulfur ylides. Org Chem Front 2023. [DOI: 10.1039/d2qo01388f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
A novel gold-catalyzed cycloisomerization/[2 + 1]cycloaddition/rearrangement of enyne-amides and sulfur ylides is reported. This strategy enables rapid and efficient construction of a series of α-pyrone derivatives.
Collapse
Affiliation(s)
- Jinhang Yu
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Department of Chemistry, Zhejiang Normal University, 688 Yingbin Road, Jinhua 321004, P. R. China
| | - Xinyuan Wang
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Department of Chemistry, Zhejiang Normal University, 688 Yingbin Road, Jinhua 321004, P. R. China
| | - Mengjiao Xu
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Department of Chemistry, Zhejiang Normal University, 688 Yingbin Road, Jinhua 321004, P. R. China
| | - Bei Zhang
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Department of Chemistry, Zhejiang Normal University, 688 Yingbin Road, Jinhua 321004, P. R. China
| | - Zuping Xiong
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Department of Chemistry, Zhejiang Normal University, 688 Yingbin Road, Jinhua 321004, P. R. China
| | - Hui Mao
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Department of Chemistry, Zhejiang Normal University, 688 Yingbin Road, Jinhua 321004, P. R. China
| | - Xin Lv
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Department of Chemistry, Zhejiang Normal University, 688 Yingbin Road, Jinhua 321004, P. R. China
| | - Liejin Zhou
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Department of Chemistry, Zhejiang Normal University, 688 Yingbin Road, Jinhua 321004, P. R. China
| |
Collapse
|
11
|
Chen H, Wu ZZ, Shao DY, Huang PQ. Multicatalysis protocol enables direct and versatile enantioselective reductive transformations of secondary amides. SCIENCE ADVANCES 2022; 8:eade3431. [PMID: 36417504 PMCID: PMC9683713 DOI: 10.1126/sciadv.ade3431] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/11/2022] [Accepted: 10/04/2022] [Indexed: 06/16/2023]
Abstract
The catalytic asymmetric geminal bis-nucleophilic addition to nonreactive functional groups is a type of highly desirable yet challenging transformation in organic chemistry. Here, we report the first catalytic asymmetric reductive/deoxygenative alkynylation of secondary amides. The method is based on a multicatalysis strategy that merges iridium/copper relay catalysis with organocatalysis. A further combination with the palladium-catalyzed alkyne hydrogenation allows the one-pot enantioselective reductive alkylation of secondary amides. This versatile protocol allows the efficient synthesis of four types of α-branched chiral amines, which are prevalent structural motifs of active pharmaceutical ingredients. The protocol also features excellent enantioselectivity, chemoselectivity, and functional group tolerance to be compatible with more reactive functional groups such as ketone and aldehyde. The synthetic utility of the method was further demonstrated by the late-stage functionalization of two drug derivatives and the concise, first catalytic asymmetric approach to the κ-opioid antagonist aticaprant.
Collapse
|
12
|
Chen J, Han J, Zhang J, Li L, Zhang Z, Yang Y, Jiang Y. Rhodium/Amine Dual Catalytic System for Reassembling C≡C Bonds of Conjugated Alkynes with Cyclopropenes via Cutting/Insertion Cascade. ACS Catal 2022. [DOI: 10.1021/acscatal.2c03777] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Affiliation(s)
- Jie Chen
- Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering Ministry of Education, Guizhou University, Huaxi District, Guiyang 550025, China
- Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Jiabin Han
- Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Jian Zhang
- Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering Ministry of Education, Guizhou University, Huaxi District, Guiyang 550025, China
| | - Ling Li
- Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering Ministry of Education, Guizhou University, Huaxi District, Guiyang 550025, China
| | - Zhengyu Zhang
- Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Yanhui Yang
- Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Yaojia Jiang
- Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering Ministry of Education, Guizhou University, Huaxi District, Guiyang 550025, China
- Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing 211816, China
| |
Collapse
|
13
|
Wang H, Chi YR, Huang X. Enantioselective Dual Catalysis of N‐Heterocyclic Carbene and Hydrogen‐Bond Donor Organocatalysts. European J Org Chem 2022. [DOI: 10.1002/ejoc.202200548] [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)
- Hongling Wang
- Shenzhen University College of Chemistry and Environmental Engineering International Joint Research Center for Molecular Science CHINA
| | - Yonggui Robin Chi
- Nanyang Technological University Division of Chemistry & Biological Chemistry 21 Nanyang Link 637371 Singapore SINGAPORE
| | - Xuan Huang
- Shenzhen University College of Chemistry and Environmental Engineering International Joint Research Center for Molecular Science CHINA
| |
Collapse
|
14
|
Fan T, Song J, Gong L. Asymmetric Redox Allylic Alkylation to Access 3,3′‐Disubstituted Oxindoles Enabled by Ni/NHC Cooperative Catalysis. Angew Chem Int Ed Engl 2022; 61:e202201678. [DOI: 10.1002/anie.202201678] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2022] [Indexed: 12/15/2022]
Affiliation(s)
- Tao Fan
- Department of Chemistry University of Science and Technology of China Hefei 230026 China
| | - Jin Song
- Institutes of Physical Science and Information Technology Anhui University Hefei 230601 China
| | - Liu‐Zhu Gong
- Department of Chemistry University of Science and Technology of China Hefei 230026 China
- Center for Excellence in Molecular Synthesis of Chinese Academy of Sciences Hefei 230026 China
| |
Collapse
|
15
|
Mondal S, Ghosh A, Biju AT. N-Heterocyclic Carbene (NHC)-Catalyzed Transformations Involving Azolium Enolates. CHEM REC 2022; 22:e202200054. [PMID: 35562645 DOI: 10.1002/tcr.202200054] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2022] [Revised: 04/19/2022] [Indexed: 11/08/2022]
Abstract
The recent advances in the N-heterocyclic carbene (NHC)-organocatalyzed generation of azolium enolate intermediates and their subsequent interception with electrophiles are highlighted. The NHC-bound azolium intermediates are generated by the addition of NHCs to suitably substituted aldehydes, acid derivatives or ketenes. A broad range of coupling partners can intercept the azolium enolates to form [2+n] cycloadducts (n=2,3,4) and various α-functionalized compounds. The enantioselective synthesis of the target compounds are achieved with the use of chiral NHCs. Herein, we summarized the development that occurred in this subclass of NHC catalysis.
Collapse
Affiliation(s)
- Santigopal Mondal
- Department of Organic Chemistry, Indian Institute of Science, Bangalore, 560012
| | - Arghya Ghosh
- Department of Organic Chemistry, Indian Institute of Science, Bangalore, 560012
| | - Akkattu T Biju
- Department of Organic Chemistry, Indian Institute of Science, Bangalore, 560012
| |
Collapse
|
16
|
Mutra MR, Wang JJ. Photoinduced ynamide structural reshuffling and functionalization. Nat Commun 2022; 13:2345. [PMID: 35487916 PMCID: PMC9055057 DOI: 10.1038/s41467-022-30001-7] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2021] [Accepted: 04/05/2022] [Indexed: 12/11/2022] Open
Abstract
The radical chemistry of ynamides has recently drawn the attention of synthetic organic chemists to the construction of various N-heterocyclic compounds. Nevertheless, the ynamide-radical chemistry remains a long-standing challenge for chemists due to its high reactivity, undesirable byproducts, severe inherent regio- and chemoselective problems. Importantly, the ynamide C(sp)-N bond fission remains an unsolved challenge. In this paper, we observe Photoinduced radical trigger regio- and chemoselective ynamide bond fission, structural reshuffling and functionalization of 2-alkynyl-ynamides to prepare synthetically inaccessible/challenging chalcogen-substituted indole derivatives with excellent step/atom economy. The key breakthroughs of this work includes, ynamide bond cleavage, divergent radical precursors, broad scope, easy to handle, larger-scale reactions, generation of multiple bonds (N-C(sp2), C(sp2)-C(sp2), C(sp2)-SO2R/C-SR, and C-I/C-Se/C-H) in a few minutes without photocatalysts, metals, oxidants, additives. Control experiments and 13C-labeling experiments supporting the conclusion that sulfone radicals contribute to ynamide structural reshuffling processes via a radical pathway. Although ynamides have emerged as a versatile class of compounds for organic synthesis, the radical chemistry of ynamides usually proceeds with the expected connectivity largely intact. Here the authors show a methodology by which the C(sp)–N bond undergoes scission, alkyne migration and functionalization under blue LED light in the absence of metals or additives.
Collapse
Affiliation(s)
- Mohana Reddy Mutra
- Department of Medicinal and Applied Chemistry, Kaohsiung Medical University, No. 100, Shih-Chuan 1st Rd, Sanmin District, Kaohsiung City, 807, Taiwan
| | - Jeh-Jeng Wang
- Department of Medicinal and Applied Chemistry, Kaohsiung Medical University, No. 100, Shih-Chuan 1st Rd, Sanmin District, Kaohsiung City, 807, Taiwan. .,Department of Medical Research, Kaohsiung Medical University Hospital, No. 100, Tzyou 1st Rd, Sanmin District, Kaohsiung City, 807, Taiwan.
| |
Collapse
|
17
|
Malchau C, Fries DV, Mees Y, Jakobs MF, Sun Y, Becker S, Niedner-Schatteburg G, Thiel WR. Transition metal complexes of NHC ligands functionalized with the cationic (η5‐cyclopentadienyl)(η6‐phenyl)iron(II) motif. Eur J Inorg Chem 2022. [DOI: 10.1002/ejic.202200106] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Christian Malchau
- TU Kaiserslautern: Technische Universitat Kaiserslautern Fachbereich Chemie GERMANY
| | - Daniela V. Fries
- TU Kaiserslautern: Technische Universitat Kaiserslautern Fachbereich Chemie GERMANY
| | - Yannik Mees
- TU Kaiserslautern: Technische Universitat Kaiserslautern Fachbereich Chemie GERMANY
| | - Marisa F. Jakobs
- TU Kaiserslautern: Technische Universitat Kaiserslautern Fachbereich Chemie GERMANY
| | - Yu Sun
- TU Kaiserslautern: Technische Universitat Kaiserslautern Fachbereich Chemie GERMANY
| | - Sabine Becker
- TU Kaiserslautern: Technische Universitat Kaiserslautern Fachbereich Chemie GERMANY
| | | | - Werner R. Thiel
- TU Kaiserslautern FB Chemie Erwin-Schrödinger-Str. 54 67663 Kaiserslautern GERMANY
| |
Collapse
|
18
|
Chakraborty N, Das B, Rajbongshi KK, Patel BK. Combined Power of Organo‐ and Transition Metal Catalysis in Organic Synthesis. European J Org Chem 2022. [DOI: 10.1002/ejoc.202200273] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Nikita Chakraborty
- Indian Institute of Technology Guwahati Chemistry Indian Institute of Technology GuwahatiDepartment of ChemistryNorth Guwahati 781039 Guwahati INDIA
| | - Bubul Das
- Indian Institute of Technology Guwahati Chemistry Indian Institute of Technology GuwahatiDepartment of ChemistryNorth Guwahati 781039 Guwahati INDIA
| | - Kamal K. Rajbongshi
- Indian Institute of Technology Guwahati Chemistry Indian Institute of Technology GuwahatiDepartment of ChemistryNorth Guwahati 781039 Guwahati INDIA
| | - Bhisma K Patel
- Indian Institute of Technology Guwahati Chemistry North Guwahati-781 039 781 039 Guwahati INDIA
| |
Collapse
|
19
|
Fan T, Song J, Gong L. Asymmetric Redox Allylic Alkylation to Access 3,3′‐Disubstituted Oxindoles Enabled by Ni/NHC Cooperative Catalysis. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202201678] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Tao Fan
- Department of Chemistry University of Science and Technology of China Hefei 230026 China
| | - Jin Song
- Institutes of Physical Science and Information Technology Anhui University Hefei 230601 China
| | - Liu‐Zhu Gong
- Department of Chemistry University of Science and Technology of China Hefei 230026 China
- Center for Excellence in Molecular Synthesis of Chinese Academy of Sciences Hefei 230026 China
| |
Collapse
|
20
|
Jiang J, Wang X, Liu S, Zhang S, Yang B, Zhao Y, Lu S. Enantioselective Cascade Annulation of α-Amino-ynones and Enals Enabled by Gold and Oxidative NHC Relay Catalysis. Angew Chem Int Ed Engl 2022; 61:e202115464. [PMID: 35029004 DOI: 10.1002/anie.202115464] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2021] [Indexed: 01/03/2023]
Abstract
We report herein an unprecedented gold and oxidative NHC relay catalysis that enables highly enantioselective cascade annulation between readily available α-amino-ynones with enals. This method utilizes the in situ-generated pyrrolin-4-ones as a novel and versatile synthon, which engage with α,β-unsaturated acylazolium intermediates generated from enals by oxidative NHC catalysis to produce pyrrole-fused lactones in high yield and excellent enantioselectivity. Synthetic utility of the lactone products is also demonstrated by facile conversion to densely functionalized pyrroles and pyrrolin-4-ones in high yields with excellent stereopurity.
Collapse
Affiliation(s)
- Jianfeng Jiang
- Frontiers Science Center for Flexible Electronics (FSCFE), Shaanxi Institute of Flexible Electronics (SIFE) & Shaanxi Institute of Biomedical Materials and Engineering (SIBME), Northwestern Polytechnical University (NPU), 127 West Youyi Road, Xi'an, 710072, China
| | - Xia Wang
- Frontiers Science Center for Flexible Electronics (FSCFE), Shaanxi Institute of Flexible Electronics (SIFE) & Shaanxi Institute of Biomedical Materials and Engineering (SIBME), Northwestern Polytechnical University (NPU), 127 West Youyi Road, Xi'an, 710072, China
| | - Shengping Liu
- Frontiers Science Center for Flexible Electronics (FSCFE), Shaanxi Institute of Flexible Electronics (SIFE) & Shaanxi Institute of Biomedical Materials and Engineering (SIBME), Northwestern Polytechnical University (NPU), 127 West Youyi Road, Xi'an, 710072, China
| | - Sichen Zhang
- Frontiers Science Center for Flexible Electronics (FSCFE), Shaanxi Institute of Flexible Electronics (SIFE) & Shaanxi Institute of Biomedical Materials and Engineering (SIBME), Northwestern Polytechnical University (NPU), 127 West Youyi Road, Xi'an, 710072, China
| | - Binmiao Yang
- Joint School of National University of Singapore and Tianjin University, International Campus of Tianjin University, Binhai New City, Fuzhou, 350207, China
| | - Yu Zhao
- Department of Chemistry, National University of Singapore (NUS), 3 Science Drive 3, Singapore, 117543, Republic of Singapore.,Joint School of National University of Singapore and Tianjin University, International Campus of Tianjin University, Binhai New City, Fuzhou, 350207, China
| | - Shenci Lu
- Frontiers Science Center for Flexible Electronics (FSCFE), Shaanxi Institute of Flexible Electronics (SIFE) & Shaanxi Institute of Biomedical Materials and Engineering (SIBME), Northwestern Polytechnical University (NPU), 127 West Youyi Road, Xi'an, 710072, China
| |
Collapse
|
21
|
Stereodivergent propargylic alkylation of enals via cooperative NHC and copper catalysis. Nat Commun 2022; 13:1344. [PMID: 35292676 PMCID: PMC8924209 DOI: 10.1038/s41467-022-29059-0] [Citation(s) in RCA: 22] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2021] [Accepted: 02/20/2022] [Indexed: 12/02/2022] Open
Abstract
Despite that asymmetric stereodivergent synthesis has experienced great success to provide unusual processes for the creation of chirality complexity, concepts appliable to asymmetric stereodivergent catalysis are still limited. The dependence on the unusual capacity of each catalyst to precisely control the reactive site planar in the region poses unparalleled constraints on this field. Here, we first demonstrate that the chiral Cu-allenylidene species can participate in the stereodivergent propargylic alkylation of enals, in concert with chiral N-heterocyclic carbenes (NHCs). Thus, all four stereoisomers were obtained with excellent enantioselectivity and diastereoselectivity (up to >99% e.e. and >95:5 d.r.) from the same starting materials by simply altering chiral Cu-Pybox complex and NHC combinations. The rich chemistry workable in the products enables the structurally diverse synthesis of chiral functional molecules and holds great potential in alkaloid synthesis, as showcased by the preparation of the key building block to access (-)-perophoramidine. The ability to construct multiple stereocenters in a modular fashion is an important goal of synthetic organic chemistry. Here the authors present a method to construct oxindoles in four stereoisomers with high enantioselectivity and diastereoselectivity from the same starting materials by using cooperative copper- and organocatalysis.
Collapse
|
22
|
Jiang J, Wang X, Liu S, Zhang S, Yang B, Zhao Y, Lu S. Enantioselective Cascade Annulation of α‐Amino‐ynones and Enals Enabled by Gold and Oxidative NHC Relay Catalysis. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202115464] [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)
- Jianfeng Jiang
- Frontiers Science Center for Flexible Electronics (FSCFE) Shaanxi Institute of Flexible Electronics (SIFE) & Shaanxi Institute of Biomedical Materials and Engineering (SIBME) Northwestern Polytechnical University (NPU) 127 West Youyi Road Xi'an 710072 China
| | - Xia Wang
- Frontiers Science Center for Flexible Electronics (FSCFE) Shaanxi Institute of Flexible Electronics (SIFE) & Shaanxi Institute of Biomedical Materials and Engineering (SIBME) Northwestern Polytechnical University (NPU) 127 West Youyi Road Xi'an 710072 China
| | - Shengping Liu
- Frontiers Science Center for Flexible Electronics (FSCFE) Shaanxi Institute of Flexible Electronics (SIFE) & Shaanxi Institute of Biomedical Materials and Engineering (SIBME) Northwestern Polytechnical University (NPU) 127 West Youyi Road Xi'an 710072 China
| | - Sichen Zhang
- Frontiers Science Center for Flexible Electronics (FSCFE) Shaanxi Institute of Flexible Electronics (SIFE) & Shaanxi Institute of Biomedical Materials and Engineering (SIBME) Northwestern Polytechnical University (NPU) 127 West Youyi Road Xi'an 710072 China
| | - Binmiao Yang
- Joint School of National University of Singapore and Tianjin University International Campus of Tianjin University Binhai New City, Fuzhou 350207 China
| | - Yu Zhao
- Department of Chemistry National University of Singapore (NUS) 3 Science Drive 3 Singapore 117543 Republic of Singapore
- Joint School of National University of Singapore and Tianjin University International Campus of Tianjin University Binhai New City, Fuzhou 350207 China
| | - Shenci Lu
- Frontiers Science Center for Flexible Electronics (FSCFE) Shaanxi Institute of Flexible Electronics (SIFE) & Shaanxi Institute of Biomedical Materials and Engineering (SIBME) Northwestern Polytechnical University (NPU) 127 West Youyi Road Xi'an 710072 China
| |
Collapse
|
23
|
Zhang B, Yu J, Wu X, Chai Z, Zhao G, Li Z, Kang H, Lv X, Zhou L. Synthesis of Furo[2,3-e][1,4]diazepin-3-one Derivatives through Tandem Cyclization/[4 + 3] Annulation Reactions. J Org Chem 2022; 87:3668-3676. [DOI: 10.1021/acs.joc.1c02561] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- Bei Zhang
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, College of Chemistry and Life Sciences, Zhejiang Normal University, Jinhua 321004, People’s Republic of China
| | - Jinhang Yu
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, College of Chemistry and Life Sciences, Zhejiang Normal University, Jinhua 321004, People’s Republic of China
| | - Xin Wu
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, College of Chemistry and Life Sciences, Zhejiang Normal University, Jinhua 321004, People’s Republic of China
| | - Zeyu Chai
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, College of Chemistry and Life Sciences, Zhejiang Normal University, Jinhua 321004, People’s Republic of China
| | - Guoying Zhao
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, College of Chemistry and Life Sciences, Zhejiang Normal University, Jinhua 321004, People’s Republic of China
| | - Zihan Li
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, College of Chemistry and Life Sciences, Zhejiang Normal University, Jinhua 321004, People’s Republic of China
| | - Honglan Kang
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, College of Chemistry and Life Sciences, Zhejiang Normal University, Jinhua 321004, People’s Republic of China
| | - Xin Lv
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, College of Chemistry and Life Sciences, Zhejiang Normal University, Jinhua 321004, People’s Republic of China
| | - Liejin Zhou
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, College of Chemistry and Life Sciences, Zhejiang Normal University, Jinhua 321004, People’s Republic of China
| |
Collapse
|
24
|
Liu H, Han YF, Gao ZH, Zhang CL, Wang C, Ye S. Cooperative N-Heterocyclic Carbene/Nickel-Catalyzed Hydroacylation of 1,3-Dienes with Aldehydes in Water. ACS Catal 2022. [DOI: 10.1021/acscatal.1c05517] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Hao Liu
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - You-Feng Han
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Zhong-Hua Gao
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Chun-Lin Zhang
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Congyang Wang
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Song Ye
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| |
Collapse
|
25
|
Yang WL, Shen JH, Zhao ZH, Wang Z, Deng WP. Stereoselective synthesis of functionalized azepines via gold and palladium relay catalysis. Org Chem Front 2022. [DOI: 10.1039/d2qo00646d] [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
We developed a cycloisomerization/asymmetric [4 + 3] cycloaddition cascade reaction via gold/palladium relay catalysis, furnishing enantioenriched furan-fused azepines efficiently.
Collapse
Affiliation(s)
- Wu-Lin Yang
- Shanghai Key Laboratory of Chemical Biology & School of Pharmacy, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China
| | - Jia-Huan Shen
- Shanghai Key Laboratory of Chemical Biology & School of Pharmacy, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China
| | - Zeng-Hui Zhao
- Shanghai Key Laboratory of Chemical Biology & School of Pharmacy, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China
| | - Zhongao Wang
- Shanghai Key Laboratory of Chemical Biology & School of Pharmacy, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China
| | - Wei-Ping Deng
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Department of Chemistry, Zhejiang Normal University, Jinhua 321004, China
- Shanghai Key Laboratory of Chemical Biology & School of Pharmacy, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China
| |
Collapse
|
26
|
He S, Wang J, Zheng J, Luo QQ, Leng H, Zheng S, Peng C, Han B, Zhan G. Organocatalytic (5+1) benzannulation of Morita–Baylis–Hillman carbonates: synthesis of multisubstituted 4-benzylidene pyrazolones. NEW J CHEM 2022. [DOI: 10.1039/d2nj01949c] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
DABCO-catalyzed (5+1) cycloaddition of MBH carbonate undergoes an α-double deprotonation pathway to de novo assemble the benzene ring.
Collapse
Affiliation(s)
- Shurong He
- State Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, P. R. China
| | - Jie Wang
- State Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, P. R. China
| | - Jinfeng Zheng
- State Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, P. R. China
| | - Qing-Qing Luo
- State Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, P. R. China
| | - Haijun Leng
- State Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, P. R. China
| | - Sixiang Zheng
- State Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, P. R. China
| | - Cheng Peng
- State Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, P. R. China
| | - Bo Han
- State Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, P. R. China
| | - Gu Zhan
- State Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, P. R. China
| |
Collapse
|
27
|
Zhou L, Yu J, Xu M, Wang X, Zhang B, Mao H, Lv X. Catalyst-controlled cycloisomerization/[4+3] cycloaddition sequence to construct 2,3-furan-fused dihydroazepines and 2,3-pyrrole-fused dihydrooxepines. Org Chem Front 2022. [DOI: 10.1039/d1qo01733k] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A novel catalyst-controlled cycloisomerization/[4+3]cycloaddition sequence of readily available acyclic enyne-amides and crotonate-derived sulfur ylides is reported. This strategy enables the rapid and efficient construction of a series of bicyclic 2,3-furan-fused...
Collapse
|
28
|
Zhang B, Yang G, Guo D, Wang J. Recent developments on NHC-driven dual catalytic approaches. Org Chem Front 2022. [DOI: 10.1039/d2qo00721e] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
This article takes an in depth look at the early relay combination of NHC and other catalysts, and the latest progress in dual catalysis, analyzing the breakthroughs and limitations.
Collapse
Affiliation(s)
- Bei Zhang
- College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241002, China
- School of Pharmaceutical Sciences, Tsinghua University, Beijing, 100084, China
| | - Gongming Yang
- School of Pharmaceutical Sciences, Tsinghua University, Beijing, 100084, China
| | - Donghui Guo
- School of Pharmaceutical Sciences, Tsinghua University, Beijing, 100084, China
| | - Jian Wang
- College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241002, China
- School of Pharmaceutical Sciences, Tsinghua University, Beijing, 100084, China
| |
Collapse
|
29
|
Li YY, Li S, Fan T, Zhang ZJ, Song J, Gong LZ. Enantioselective Formal [4 + 3] Annulations to Access Benzodiazepinones and Benzoxazepinones via NHC/Ir/Urea Catalysis. ACS Catal 2021. [DOI: 10.1021/acscatal.1c04541] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Affiliation(s)
- Yang-Yang Li
- Hefei National Laboratory for Physical Sciences at the Microscale and Department of Chemistry, University of Science and Technology of China, Hefei, 230026, China
| | - Shuai Li
- Hefei National Laboratory for Physical Sciences at the Microscale and Department of Chemistry, University of Science and Technology of China, Hefei, 230026, China
| | - Tao Fan
- Hefei National Laboratory for Physical Sciences at the Microscale and Department of Chemistry, University of Science and Technology of China, Hefei, 230026, China
| | - Zi-Jing Zhang
- Hefei National Laboratory for Physical Sciences at the Microscale and Department of Chemistry, University of Science and Technology of China, Hefei, 230026, China
| | - Jin Song
- Institutes of Physical Science and Information Technology, Anhui University, Hefei, 230601, China
| | - Liu-Zhu Gong
- Hefei National Laboratory for Physical Sciences at the Microscale and Department of Chemistry, University of Science and Technology of China, Hefei, 230026, China
- Center for Excellence in Molecular Synthesis of Chinese Academy of Sciences, Hefei, 230026, China
| |
Collapse
|
30
|
Genet M, Takfaoui A, Marrot J, Greck C, Moreau X. Construction of Enantioenriched 4,5,6,7‐Tetrahydrofuro[2,3‐
b
]pyridines through a Multicatalytic Sequence Merging Gold and Amine Catalysis. Adv Synth Catal 2021. [DOI: 10.1002/adsc.202100756] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
- Manon Genet
- Institut Lavoisier de Versailles (ILV) Univ. Versailles-St-Quentin-en-Yvelines, Univ Paris Saclay UMR CNRS 8180 78035 Versailles Cedex France
| | - Abdelilah Takfaoui
- Institut Lavoisier de Versailles (ILV) Univ. Versailles-St-Quentin-en-Yvelines, Univ Paris Saclay UMR CNRS 8180 78035 Versailles Cedex France
| | - Jérôme Marrot
- Institut Lavoisier de Versailles (ILV) Univ. Versailles-St-Quentin-en-Yvelines, Univ Paris Saclay UMR CNRS 8180 78035 Versailles Cedex France
| | - Christine Greck
- Institut Lavoisier de Versailles (ILV) Univ. Versailles-St-Quentin-en-Yvelines, Univ Paris Saclay UMR CNRS 8180 78035 Versailles Cedex France
| | - Xavier Moreau
- Institut Lavoisier de Versailles (ILV) Univ. Versailles-St-Quentin-en-Yvelines, Univ Paris Saclay UMR CNRS 8180 78035 Versailles Cedex France
| |
Collapse
|
31
|
Jiang P, Guo J, Gong M, Zhou X, Cao W, Fu Z, Huang W. N-Heterocyclic carbene-catalyzed [3 + 3] annulation of bromoenals with 2-aminochromones to access chromeno[2,3- b]pyridinones. Org Biomol Chem 2021; 19:4882-4886. [PMID: 34013952 DOI: 10.1039/d1ob00720c] [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
N-Heterocyclic carbene-catalyzed [3 + 3] annulation of bromoenals with 2-aminochromones has been successfully developed. A structurally diverse set of chromeno[2,3-b]pyridinones was efficiently constructed in acceptable to excellent yields. The reaction features mild reaction conditions, a broad substrate scope, and easy scale-up.
Collapse
Affiliation(s)
- Pengrui Jiang
- Key Laboratory of Flexible Electronics & Institute of Advanced Materials, Nanjing Tech University, 30 South Puzhu Road, Nanjing 211816, China.
| | - Jingcheng Guo
- Key Laboratory of Flexible Electronics & Institute of Advanced Materials, Nanjing Tech University, 30 South Puzhu Road, Nanjing 211816, China.
| | - Minghua Gong
- Key Laboratory of Flexible Electronics & Institute of Advanced Materials, Nanjing Tech University, 30 South Puzhu Road, Nanjing 211816, China.
| | - Xiangui Zhou
- Key Laboratory of Flexible Electronics & Institute of Advanced Materials, Nanjing Tech University, 30 South Puzhu Road, Nanjing 211816, China.
| | - Wei Cao
- Key Laboratory of Flexible Electronics & Institute of Advanced Materials, Nanjing Tech University, 30 South Puzhu Road, Nanjing 211816, China.
| | - Zhenqian Fu
- Key Laboratory of Flexible Electronics & Institute of Advanced Materials, Nanjing Tech University, 30 South Puzhu Road, Nanjing 211816, China.
| | - Wei Huang
- Key Laboratory of Flexible Electronics & Institute of Advanced Materials, Nanjing Tech University, 30 South Puzhu Road, Nanjing 211816, China.
| |
Collapse
|
32
|
Xie Y, Yang X, Xu J, Chai H, Liu H, Zhang J, Song J, Gao Y, Jin Z, Chi YR. Access to Allene‐Containing Molecules via Enantioselective Reactions of Azolium Cumulenolate Intermediates. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202102177] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Yongtao Xie
- International Joint Research Center for Molecular Science College of Chemistry and Environmental Engineering College of Physics and Optoelectronic Engineering Shenzhen University Shenzhen 518060 China
- Division of Chemistry & Mathematical Science School of Physical & Mathematical Sciences Nanyang Technological University Singapore 637371 Singapore
| | - Xing Yang
- Division of Chemistry & Mathematical Science School of Physical & Mathematical Sciences Nanyang Technological University Singapore 637371 Singapore
| | - Jun Xu
- College of Pharmacy Guizhou University of Traditional Chinese Medicine Guiyang 550025 China
- Division of Chemistry & Mathematical Science School of Physical & Mathematical Sciences Nanyang Technological University Singapore 637371 Singapore
| | - Huifang Chai
- College of Pharmacy Guizhou University of Traditional Chinese Medicine Guiyang 550025 China
| | - Hongxia Liu
- International Joint Research Center for Molecular Science College of Chemistry and Environmental Engineering College of Physics and Optoelectronic Engineering Shenzhen University Shenzhen 518060 China
| | - Junmin Zhang
- International Joint Research Center for Molecular Science College of Chemistry and Environmental Engineering College of Physics and Optoelectronic Engineering Shenzhen University Shenzhen 518060 China
| | - Jun Song
- International Joint Research Center for Molecular Science College of Chemistry and Environmental Engineering College of Physics and Optoelectronic Engineering Shenzhen University Shenzhen 518060 China
| | - Yuan Gao
- International Joint Research Center for Molecular Science College of Chemistry and Environmental Engineering College of Physics and Optoelectronic Engineering Shenzhen University Shenzhen 518060 China
| | - Zhichao Jin
- Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering Key Laboratory of Green Pesticide and Agricultural Bioengineering Ministry of Education Guizhou University Huaxi District Guiyang 550025 China
| | - Yonggui Robin Chi
- Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering Key Laboratory of Green Pesticide and Agricultural Bioengineering Ministry of Education Guizhou University Huaxi District Guiyang 550025 China
- Division of Chemistry & Mathematical Science School of Physical & Mathematical Sciences Nanyang Technological University Singapore 637371 Singapore
| |
Collapse
|
33
|
Xie Y, Yang X, Xu J, Chai H, Liu H, Zhang J, Song J, Gao Y, Jin Z, Chi YR. Access to Allene-Containing Molecules via Enantioselective Reactions of Azolium Cumulenolate Intermediates. Angew Chem Int Ed Engl 2021; 60:14817-14823. [PMID: 33834597 DOI: 10.1002/anie.202102177] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2021] [Revised: 03/29/2021] [Indexed: 12/17/2022]
Abstract
Azolium cumulenolates are a special type of intermediates in N-heterocyclic carbene catalysis. They contain elongated linear structures with three contiguous C=C bonds and sterically unhindered α-carbon atoms. These structural features make it difficult to develop enantioselective reactions for these intermediates. Here we disclose the first carbene-catalyzed highly enantioselective addition reactions of azolium cumulenolates. The reaction starts with alkynals as the precursors for azolium cumulenolate intermediates that undergo enantioselective addition to activated ketones. From the same set of substrates, both allene and spirooxindole products can be obtained with high yields and excellent enantioselectivities. The allene moieties in our optically enriched products carry rich reactivities and can be transformed to diverse molecules. The spirooxindole scaffolds in our products are important structural motifs in natural products and medicines.
Collapse
Affiliation(s)
- Yongtao Xie
- International Joint Research Center for Molecular Science, College of Chemistry and Environmental Engineering, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen, 518060, China
- Division of Chemistry & Mathematical Science, School of Physical & Mathematical Sciences, Nanyang Technological University, Singapore, 637371, Singapore
| | - Xing Yang
- Division of Chemistry & Mathematical Science, School of Physical & Mathematical Sciences, Nanyang Technological University, Singapore, 637371, Singapore
| | - Jun Xu
- College of Pharmacy, Guizhou University of Traditional Chinese Medicine, Guiyang, 550025, China
- Division of Chemistry & Mathematical Science, School of Physical & Mathematical Sciences, Nanyang Technological University, Singapore, 637371, Singapore
| | - Huifang Chai
- College of Pharmacy, Guizhou University of Traditional Chinese Medicine, Guiyang, 550025, China
| | - Hongxia Liu
- International Joint Research Center for Molecular Science, College of Chemistry and Environmental Engineering, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen, 518060, China
| | - Junmin Zhang
- International Joint Research Center for Molecular Science, College of Chemistry and Environmental Engineering, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen, 518060, China
| | - Jun Song
- International Joint Research Center for Molecular Science, College of Chemistry and Environmental Engineering, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen, 518060, China
| | - Yuan Gao
- International Joint Research Center for Molecular Science, College of Chemistry and Environmental Engineering, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen, 518060, China
| | - Zhichao Jin
- Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University Huaxi District, Guiyang, 550025, China
| | - Yonggui Robin Chi
- Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University Huaxi District, Guiyang, 550025, China
- Division of Chemistry & Mathematical Science, School of Physical & Mathematical Sciences, Nanyang Technological University, Singapore, 637371, Singapore
| |
Collapse
|
34
|
Yang G, Ke Y, Zhao Y. Stereoselective Access to Polyfunctionalized Nine‐Membered Heterocycles by Sequential Gold and Palladium Catalysis. Angew Chem Int Ed Engl 2021; 60:12775-12780. [DOI: 10.1002/anie.202102061] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2021] [Revised: 03/28/2021] [Indexed: 11/05/2022]
Affiliation(s)
- Guoqiang Yang
- Department of Chemistry National University of Singapore 3 Science Drive 3 Singapore 117543 Republic of Singapore
| | - Ya‐Ming Ke
- Department of Chemistry National University of Singapore 3 Science Drive 3 Singapore 117543 Republic of Singapore
| | - Yu Zhao
- Department of Chemistry National University of Singapore 3 Science Drive 3 Singapore 117543 Republic of Singapore
- Joint School of National University of Singapore and Tianjin University International Campus of Tianjin University Binhai New City Fuzhou 350207 China
| |
Collapse
|
35
|
Yang G, Ke Y, Zhao Y. Stereoselective Access to Polyfunctionalized Nine‐Membered Heterocycles by Sequential Gold and Palladium Catalysis. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202102061] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Guoqiang Yang
- Department of Chemistry National University of Singapore 3 Science Drive 3 Singapore 117543 Republic of Singapore
| | - Ya‐Ming Ke
- Department of Chemistry National University of Singapore 3 Science Drive 3 Singapore 117543 Republic of Singapore
| | - Yu Zhao
- Department of Chemistry National University of Singapore 3 Science Drive 3 Singapore 117543 Republic of Singapore
- Joint School of National University of Singapore and Tianjin University International Campus of Tianjin University Binhai New City Fuzhou 350207 China
| |
Collapse
|
36
|
Zhao C, Blaszczyk SA, Wang J. Asymmetric reactions of N-heterocyclic carbene (NHC)-based chiral acyl azoliums and azolium enolates. GREEN SYNTHESIS AND CATALYSIS 2021. [DOI: 10.1016/j.gresc.2021.03.003] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
|
37
|
Liu K, Studer A. Direct α-Acylation of Alkenes via N-Heterocyclic Carbene, Sulfinate, and Photoredox Cooperative Triple Catalysis. J Am Chem Soc 2021; 143:4903-4909. [PMID: 33760603 PMCID: PMC8033569 DOI: 10.1021/jacs.1c01022] [Citation(s) in RCA: 70] [Impact Index Per Article: 23.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2021] [Indexed: 12/25/2022]
Abstract
N-Heterocyclic carbene (NHC) catalysis has emerged as a versatile tool in modern synthetic chemistry. Further increasing the complexity, several processes have been introduced that proceed via dual catalysis, where the NHC organocatalyst operates in concert with a second catalytic moiety, significantly enlarging the reaction scope. In biological transformations, multiple catalysis is generally used to access complex natural products. Guided by that strategy, triple catalysis has been studied recently, where three different catalytic modes are merged in a single process. In this Communication, direct α-C-H acylation of various alkenes with aroyl fluorides using NHC, sulfinate, and photoredox cooperative triple catalysis is reported. The method allows the preparation of α-substituted vinyl ketones in moderate to high yields with excellent functional group tolerance. Mechanistic studies reveal that these cascades proceed through a sequential radical addition/coupling/elimination process. In contrast to known triple catalysis processes that operate via two sets of interwoven catalysis cycles, in the introduced process, all three cycles are interwoven.
Collapse
Affiliation(s)
- Kun Liu
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität, Corrensstrasse 40, 48149 Münster, Germany
| | - Armido Studer
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität, Corrensstrasse 40, 48149 Münster, Germany
| |
Collapse
|
38
|
Zhang J, Gao YS, Gu BM, Yang WL, Tian BX, Deng WP. Cooperative N-heterocyclic Carbene and Iridium Catalysis Enables Stereoselective and Regiodivergent [3 + 2] and [3 + 3] Annulation Reactions. ACS Catal 2021. [DOI: 10.1021/acscatal.1c00081] [Citation(s) in RCA: 40] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Jian Zhang
- School of Pharmacy and Shanghai Key Laboratory of New Drug Design, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, People’s Republic of China
| | - Yan-Shan Gao
- School of Pharmacy and Shanghai Key Laboratory of New Drug Design, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, People’s Republic of China
| | - Bu-Ming Gu
- School of Pharmaceutical Sciences, Tsinghua University, Beijing 100084, People’s Republic of China
| | - Wu-Lin Yang
- School of Pharmacy and Shanghai Key Laboratory of New Drug Design, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, People’s Republic of China
| | - Bo-Xue Tian
- School of Pharmaceutical Sciences, Tsinghua University, Beijing 100084, People’s Republic of China
| | - Wei-Ping Deng
- School of Pharmacy and Shanghai Key Laboratory of New Drug Design, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, People’s Republic of China
| |
Collapse
|
39
|
Chen DH, Sun WT, Zhu CJ, Lu GS, Wu DP, Wang AE, Huang PQ. Enantioselective Reductive Cyanation and Phosphonylation of Secondary Amides by Iridium and Chiral Thiourea Sequential Catalysis. Angew Chem Int Ed Engl 2021; 60:8827-8831. [PMID: 33484032 DOI: 10.1002/anie.202015898] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2020] [Indexed: 12/26/2022]
Abstract
The combination of transition-metal catalysis and organocatalysis increasingly offers chemists opportunities to realize diverse unprecedented chemical transformations. By combining iridium with chiral thiourea catalysis, direct enantioselective reductive cyanation and phosphonylation of secondary amides have been accomplished for the first time for the synthesis of enantioenriched chiral α-aminonitriles and α-aminophosphonates. The protocol is highly efficient and enantioselective, providing a novel route to the synthesis of optically active α-functionalized amines from the simple, readily available feedstocks. In addition, the reactions are scalable and the thiourea catalyst can be recycled and reused.
Collapse
Affiliation(s)
- Dong-Huang Chen
- Department of Chemistry and Fujian Provincial Key Laboratory of Chemical Biology, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, Fujian, China
| | - Wei-Ting Sun
- Department of Chemistry and Fujian Provincial Key Laboratory of Chemical Biology, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, Fujian, China
| | - Cheng-Jie Zhu
- Department of Chemistry and Fujian Provincial Key Laboratory of Chemical Biology, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, Fujian, China
| | - Guang-Sheng Lu
- Department of Chemistry and Fujian Provincial Key Laboratory of Chemical Biology, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, Fujian, China
| | - Dong-Ping Wu
- Department of Chemistry and Fujian Provincial Key Laboratory of Chemical Biology, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, Fujian, China
| | - Ai-E Wang
- Department of Chemistry and Fujian Provincial Key Laboratory of Chemical Biology, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, Fujian, China.,State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou, 730000, Gansu, China
| | - Pei-Qiang Huang
- Department of Chemistry and Fujian Provincial Key Laboratory of Chemical Biology, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, Fujian, China.,State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou, 730000, Gansu, China
| |
Collapse
|
40
|
Chen D, Sun W, Zhu C, Lu G, Wu D, Wang A, Huang P. Enantioselective Reductive Cyanation and Phosphonylation of Secondary Amides by Iridium and Chiral Thiourea Sequential Catalysis. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202015898] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Dong‐Huang Chen
- Department of Chemistry and Fujian Provincial Key Laboratory of Chemical Biology College of Chemistry and Chemical Engineering Xiamen University Xiamen 361005 Fujian China
| | - Wei‐Ting Sun
- Department of Chemistry and Fujian Provincial Key Laboratory of Chemical Biology College of Chemistry and Chemical Engineering Xiamen University Xiamen 361005 Fujian China
| | - Cheng‐Jie Zhu
- Department of Chemistry and Fujian Provincial Key Laboratory of Chemical Biology College of Chemistry and Chemical Engineering Xiamen University Xiamen 361005 Fujian China
| | - Guang‐Sheng Lu
- Department of Chemistry and Fujian Provincial Key Laboratory of Chemical Biology College of Chemistry and Chemical Engineering Xiamen University Xiamen 361005 Fujian China
| | - Dong‐Ping Wu
- Department of Chemistry and Fujian Provincial Key Laboratory of Chemical Biology College of Chemistry and Chemical Engineering Xiamen University Xiamen 361005 Fujian China
| | - Ai‐E Wang
- Department of Chemistry and Fujian Provincial Key Laboratory of Chemical Biology College of Chemistry and Chemical Engineering Xiamen University Xiamen 361005 Fujian China
- State Key Laboratory of Applied Organic Chemistry Lanzhou University Lanzhou 730000, Gansu China
| | - Pei‐Qiang Huang
- Department of Chemistry and Fujian Provincial Key Laboratory of Chemical Biology College of Chemistry and Chemical Engineering Xiamen University Xiamen 361005 Fujian China
- State Key Laboratory of Applied Organic Chemistry Lanzhou University Lanzhou 730000, Gansu China
| |
Collapse
|
41
|
Palladium(II), silver(I), and gold(I) complexes of a new class of chiral bicyclic [1,2,3]-triazolooxazine derived N-heterocyclic carbenes (NHCs): Synthesis, structure and application studies. Polyhedron 2021. [DOI: 10.1016/j.poly.2020.115011] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
|
42
|
He Y, Yan Y, Ren Z, Wang Y, Yu Q, Xiong J, Wang M. Regioselective Synthesis of 2,3‐Dihydrobenzo[
f
]isoindolones via Ag‐Catalyzed Sequential Ugi 4CR/Cascade Radical Cyclization Reaction. Adv Synth Catal 2021. [DOI: 10.1002/adsc.202001255] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Ying‐Chun He
- Institute of Applied Chemistry Shanxi University Taiyuan 030006 People's Republic of China
| | - Yan‐Mei Yan
- Department of Chemistry Taiyuan Normal University Jinzhong 030619 People's Republic of China
| | - Zhen‐Xing Ren
- Institute of Applied Chemistry Shanxi University Taiyuan 030006 People's Republic of China
| | - Yong‐Zhao Wang
- Engineering Research Center of Ministry of Education for Fine Chemicals Shanxi University Taiyuan 030006 People's Republic of China
| | - Qiang Yu
- Department of medical imaging Shanxi Medical University Taiyuan 030006 People's Republic of China
| | - Jun Xiong
- School of Pharmacy Hubei University of Science and Technology Xianning 437100 People's Republic of China
| | - Meng‐Liang Wang
- Institute of Applied Chemistry Shanxi University Taiyuan 030006 People's Republic of China
| |
Collapse
|
43
|
Bi W, Yang Y, Ye S, Wang C. Umpolung coupling of pyridine-2-carboxaldehydes and propargylic carbonates via N-heterocyclic carbene/palladium synergetic catalysis. Chem Commun (Camb) 2021; 57:4452-4455. [PMID: 33949494 DOI: 10.1039/d1cc01311d] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The umpolung cross-coupling reaction of pyridine-2-carboxaldehydes and propargylic carbonates has been developed for the first time through N-heterocyclic carbene/palladium cooperative catalysis with the judicious selection of the palladium catalyst, ligand and N-heterocyclic carbene, giving the propargylic ketones regioselectively.
Collapse
Affiliation(s)
- Weiyang Bi
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China. and University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yunhui Yang
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China. and University of Chinese Academy of Sciences, Beijing 100049, China and Physical Science Laboratory, Huairou National Comprehensive Science Center, Beijing 101400, China
| | - Song Ye
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China. and University of Chinese Academy of Sciences, Beijing 100049, China
| | - Congyang Wang
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China. and University of Chinese Academy of Sciences, Beijing 100049, China and Physical Science Laboratory, Huairou National Comprehensive Science Center, Beijing 101400, China
| |
Collapse
|
44
|
Gao J, Feng J, Du D. Generation of azolium dienolates as versatile nucleophilic synthons via N-heterocyclic carbene catalysis. Org Chem Front 2021. [DOI: 10.1039/d1qo01127h] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
The recent advances in N-heterocyclic carbene (NHC)-catalyzed generation of azolium dienolates from different precursors and their synthetic applications for the construction of various valuable molecules are summarized comprehensively in this review.
Collapse
Affiliation(s)
- Jian Gao
- Department of Chemistry, State Key Laboratory of Natural Medicines, China Pharmaceutical University, 210009, P. R. China
| | - Jie Feng
- Department of Chemistry, State Key Laboratory of Natural Medicines, China Pharmaceutical University, 210009, P. R. China
| | - Ding Du
- Department of Chemistry, State Key Laboratory of Natural Medicines, China Pharmaceutical University, 210009, P. R. China
| |
Collapse
|
45
|
Zhang J, Gao J, Feng J, Lu T, Du D. Recent Advances in Synergistic Catalysis by Merging N-Heterocyclic Carbenes and Transition Metals. CHINESE J ORG CHEM 2021. [DOI: 10.6023/cjoc202106002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
|
46
|
Zhang Z, Wen Y, Song J, Gong L. Kinetic Resolution of Aziridines Enabled by N‐Heterocyclic Carbene/Copper Cooperative Catalysis: Carbene Dose‐Controlled Chemo‐Switchability. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202013679] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Zi‐Jing Zhang
- Hefei National Laboratory for Physical Sciences at the Microscale Department of Chemistry, and Center for Excellence in Molecular Synthesis of CAS University of Science and Technology of China Hefei 230026 China
| | - Yu‐Hua Wen
- Hefei National Laboratory for Physical Sciences at the Microscale Department of Chemistry, and Center for Excellence in Molecular Synthesis of CAS University of Science and Technology of China Hefei 230026 China
| | - Jin Song
- Hefei National Laboratory for Physical Sciences at the Microscale Department of Chemistry, and Center for Excellence in Molecular Synthesis of CAS University of Science and Technology of China Hefei 230026 China
| | - Liu‐Zhu Gong
- Hefei National Laboratory for Physical Sciences at the Microscale Department of Chemistry, and Center for Excellence in Molecular Synthesis of CAS University of Science and Technology of China Hefei 230026 China
| |
Collapse
|
47
|
Zhang ZJ, Wen YH, Song J, Gong LZ. Kinetic Resolution of Aziridines Enabled by N-Heterocyclic Carbene/Copper Cooperative Catalysis: Carbene Dose-Controlled Chemo-Switchability. Angew Chem Int Ed Engl 2020; 60:3268-3276. [PMID: 33103824 DOI: 10.1002/anie.202013679] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2020] [Revised: 10/24/2020] [Indexed: 02/06/2023]
Abstract
Catalytic kinetic resolution (KR) and dynamic kinetic asymmetric transformation (DyKAT) are alternative and complementary avenues to access chiral stereoisomers of both starting materials and reaction products. The development of highly efficient chiral catalytic systems for kinetically controlled processes has therefore been one of the linchpins in asymmetric synthesis. N-heterocyclic carbene (NHC)/copper cooperative catalysis has enabled highly efficient KR and DyKAT of racemic N-tosylaziridines by [3+3] annulation with isatin-derived enals, leading to highly enantioenriched N-tosylaziridine derivatives (up to >99 % ee) and a large library of spirooxindole derivatives with high structural diversity and stereoselectivity (up to >95:5 d.r., >99 % ee). Mechanistic studies suggest that the NHC can bind reversibly to the copper catalyst without compromising its catalytic activity and regulate the catalytic activity of the copper complex to switch the chemoselection between KR and DyKAT.
Collapse
Affiliation(s)
- Zi-Jing Zhang
- Hefei National Laboratory for Physical Sciences at the Microscale, Department of Chemistry, and Center for Excellence in Molecular Synthesis of CAS, University of Science and Technology of China, Hefei, 230026, China
| | - Yu-Hua Wen
- Hefei National Laboratory for Physical Sciences at the Microscale, Department of Chemistry, and Center for Excellence in Molecular Synthesis of CAS, University of Science and Technology of China, Hefei, 230026, China
| | - Jin Song
- Hefei National Laboratory for Physical Sciences at the Microscale, Department of Chemistry, and Center for Excellence in Molecular Synthesis of CAS, University of Science and Technology of China, Hefei, 230026, China
| | - Liu-Zhu Gong
- Hefei National Laboratory for Physical Sciences at the Microscale, Department of Chemistry, and Center for Excellence in Molecular Synthesis of CAS, University of Science and Technology of China, Hefei, 230026, China
| |
Collapse
|
48
|
Qian D, Zhang J. Yne-Enones Enable Diversity-Oriented Catalytic Cascade Reactions: A Rapid Assembly of Complexity. Acc Chem Res 2020; 53:2358-2371. [PMID: 32998506 DOI: 10.1021/acs.accounts.0c00466] [Citation(s) in RCA: 57] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
A small-molecule collection with structural diversity and complexity is a prerequisite to using either drug candidates or chemical probes for drug discovery and chemical-biology investigations, respectively. Over the past 12 years, we have engaged in developing efficient diversity-oriented cascade strategies for the synthesis of topologically diverse skeletons incorporating biologically relevant structural motifs such as O- and N-heterocycles, fused polycycles, and multifunctionalized allenes. In particular, we have highlighted the use of simple, linear, and densely functionalized molecular platforms in these reactions.This account details our efforts in the design of novel molecular platforms for use in metal- and organo-catalyzed cascade reactions, which include 2-(1-alknyl)-2-alken-1-ones (yne-enones) for heterocyclization/cross-coupling cascades, heterocyclization/cycloaddition cascades, nucleophilic addition/cross-coupling cascades, nucleophilic addition/heterocyclization cascades, and so on. Moreover, this Account outlines corresponding mechanistic insights, computational information, and applications of these cascades in the construction of various highly substituted carbo- and heterocycles as well as highly functionalized acyclic compounds, e.g., allenes and dienes. In addition to yne-enones, we evolved the functional groups of our original yne-enones to provide a series of yne-enone variants, which resulted in products with complementary reactivities.The reactivity profile of the yne-enones is defined by the presence of an alkyne moiety and a conjugated enone unit and their mutual through-bond connectivity. Owing to the conceptually rapid development of carbophilic activation, we have identified a series of efficient catalytic systems consisting of metal catalysts, including Pd, Au, and Rh complexes, for diversity-oriented cascade catalysis, allowing various unprecedented reactions to be achieved through different-types of reaction intermediates, including all-carbon metal 1,n-dipoles, furan-based o-quinodimethanes (oQDMs), and allenyl-metal species. In addition to commonly known transition-metal catalytic activity, the Lewis acidity of these complexes is crucial to accomplish the corresponding transformation. In addition, highly enantioselective gold(I)-catalyzed heterocyclization/cycloaddition cascades of yne-enones and their variants were achieved by the application of bisphosphines (e.g., Cn-TunePhos), monophosphines, and our developed "Ming-Phos" as chiral ligands. Importantly, Ming-Phos ligands exhibited excellent performance in gold-catalyzed mechanistically distinct [3 + n]-cycloaddition reactions, in which the chiral sulfinamide moiety is possibly responsible for the interaction with the substrate to control enantioselectivity. Subsequently, we demonstrated that the easily prepared polymer-supported Ming-Phos ligand could be applied for heterogeneously gold(I)-catalyzed asymmetric cycloaddition with good stereocontrol. With metal-free catalysis, the divergent functionalization of yne-enones provides numerous synthetic outlets for structure diversification. For example, yne-enones are particularly attractive for use as precursors of various chiral and achiral heterocycles, such as pyrazoles, isoxazoles, pyrroles, and pyrans, etc.
Collapse
Affiliation(s)
- Deyun Qian
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, Department of Chemistry, East China Normal University, 3663 North Zhongshan Road, Shanghai 200062, China
| | - Junliang Zhang
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, Department of Chemistry, East China Normal University, 3663 North Zhongshan Road, Shanghai 200062, China
- Department of Chemistry, Fudan University, 2005 Songhu Road, Shanghai 200433, China
| |
Collapse
|
49
|
Gao J, Zhang J, Fang S, Feng J, Lu T, Du D. Synergistic N-Heterocyclic Carbene/Palladium-Catalyzed [3 + 2] Annulation of Vinyl Enolates with 1-Tosyl-2-vinylaziridine. Org Lett 2020; 22:7725-7729. [DOI: 10.1021/acs.orglett.0c02935] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Jian Gao
- Department of Chemistry, State Key Laboratory of Natural Medicines, China Pharmaceutical University, 24 Tong Jia Xiang, Nanjing, 210009, People’s Republic of China
| | - Jianming Zhang
- Department of Chemistry, State Key Laboratory of Natural Medicines, China Pharmaceutical University, 24 Tong Jia Xiang, Nanjing, 210009, People’s Republic of China
| | - Shuaishuai Fang
- Department of Chemistry, State Key Laboratory of Natural Medicines, China Pharmaceutical University, 24 Tong Jia Xiang, Nanjing, 210009, People’s Republic of China
| | - Jie Feng
- Department of Chemistry, State Key Laboratory of Natural Medicines, China Pharmaceutical University, 24 Tong Jia Xiang, Nanjing, 210009, People’s Republic of China
| | - Tao Lu
- Department of Chemistry, State Key Laboratory of Natural Medicines, China Pharmaceutical University, 24 Tong Jia Xiang, Nanjing, 210009, People’s Republic of China
| | - Ding Du
- Department of Chemistry, State Key Laboratory of Natural Medicines, China Pharmaceutical University, 24 Tong Jia Xiang, Nanjing, 210009, People’s Republic of China
| |
Collapse
|
50
|
Du D, Zhang K, Ma R, Chen L, Gao J, Lu T, Shi Z, Feng J. Bio- and Medicinally Compatible α-Amino-Acid Modification via Merging Photoredox and N-Heterocyclic Carbene Catalysis. Org Lett 2020; 22:6370-6375. [DOI: 10.1021/acs.orglett.0c02202] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Ding Du
- State Key Laboratory of Natural Medicines, Department of Organic Chemistry, China Pharmaceutical University, Nanjing 210009, P. R. China
| | - Kuili Zhang
- State Key Laboratory of Natural Medicines, Department of Organic Chemistry, China Pharmaceutical University, Nanjing 210009, P. R. China
| | - Rui Ma
- State Key Laboratory of Natural Medicines, Department of Organic Chemistry, China Pharmaceutical University, Nanjing 210009, P. R. China
| | - Lei Chen
- State Key Laboratory of Natural Medicines, Department of Organic Chemistry, China Pharmaceutical University, Nanjing 210009, P. R. China
| | - Jian Gao
- State Key Laboratory of Natural Medicines, Department of Organic Chemistry, China Pharmaceutical University, Nanjing 210009, P. R. China
| | - Tao Lu
- State Key Laboratory of Natural Medicines, Department of Organic Chemistry, China Pharmaceutical University, Nanjing 210009, P. R. China
| | - Zhihao Shi
- State Key Laboratory of Natural Medicines, Department of Organic Chemistry, China Pharmaceutical University, Nanjing 210009, P. R. China
| | - Jie Feng
- State Key Laboratory of Natural Medicines, Department of Organic Chemistry, China Pharmaceutical University, Nanjing 210009, P. R. China
| |
Collapse
|