1
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Tao Q, Zhang H, Ye R, Zhang Y, Long Y, Zhou X. Palladium-Catalyzed Synthesis of β-Alkynyl Ketones via Selective 1,3-Alkynyl Migration of α,α-Disubstituted Allylic Alcohols. J Org Chem 2024; 89:13208-13214. [PMID: 39213500 DOI: 10.1021/acs.joc.4c01332] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/04/2024]
Abstract
Herein, a palladium-catalyzed 1,3-alkynyl migration of allylic alcohol for the synthesis of β-alkynyl ketone was described. This intramolecular rearrangement reaction demonstrated an enhanced reactivity compared to the traditional intermolecular alkynylation by circumventing the dimerization of alkynes, exhibiting a specific selectivity toward β-alkynyl elimination. Moreover, this reaction featured wide substrate scope, good functional group tolerance, and 100% atom economy.
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Affiliation(s)
- Qinyue Tao
- College of Chemistry, Sichuan University, 29 Wangjiang Road, Chengdu 610064, P. R. China
| | - Haoxiang Zhang
- College of Chemistry, Sichuan University, 29 Wangjiang Road, Chengdu 610064, P. R. China
| | - Runyou Ye
- College of Chemistry, Sichuan University, 29 Wangjiang Road, Chengdu 610064, P. R. China
| | - Yanqiong Zhang
- College of Chemistry, Sichuan University, 29 Wangjiang Road, Chengdu 610064, P. R. China
| | - Yang Long
- School of Pharmacy, North Sichuan Medical College, 55 Dongshun Road, Nanchong 637000, P. R. China
| | - Xiangge Zhou
- College of Chemistry, Sichuan University, 29 Wangjiang Road, Chengdu 610064, P. R. China
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2
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Chen K, Li C, Dong S, Hong K, Huang J, Xu X. Gold-Catalyzed Alkyne Oxidative Cyclization/Mannich-Type Addition Cascade Reaction of Ynamides with 1,3,5-Triazinanes. J Org Chem 2024; 89:13623-13628. [PMID: 39238209 DOI: 10.1021/acs.joc.4c01784] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/07/2024]
Abstract
Herein, a gold-catalyzed alkyne oxidative cyclization/Mannich-type addition cascade reaction of ynamides with 1,3,5-triazinanes in the presence of a Brønsted acid has been presented. A class of functionalized fluorenes bearing a quaternary carbon center was synthesized directly with moderate to excellent yields via in situ formed α-oxo carbenes using quinoline N-oxide as the oxidant under mild reaction conditions.
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Affiliation(s)
- Kewei Chen
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, Guangdong, China
| | - Chao Li
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, Guangdong, China
| | - Shanliang Dong
- School of Chemistry and Chemical Engineering, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Kemiao Hong
- School of Chemistry and Chemical Engineering, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Jingjing Huang
- School of Chemistry, Sun Yat-sen University, Guangzhou 510006, Guangdong, China
| | - Xinfang Xu
- School of Chemistry and Chemical Engineering, Zhejiang Sci-Tech University, Hangzhou 310018, China
- School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang 453007, China
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3
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Barik P, Behera SS, Nayak LK, Nanda LN, Nanda SK, Patri P. Transition metal catalysed cascade C-C and C-O bond forming events of alkynes. Org Biomol Chem 2024; 22:5052-5086. [PMID: 38856756 DOI: 10.1039/d3ob02044d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/11/2024]
Abstract
The past few decades have witnessed the emergence of domino reactions as a powerful tool for the multi-functionalization of alkynes for the rapid and smooth construction of complex molecular architectures. In this context, employing transition metal catalysis, vicinal/geminal cascade functionalization of alkynes involving C-C and C-O bond-formation reactions, has become a preferred strategy for the synthesis of oxygenated motifs. Despite this significant progress, reviews documenting such strategies are either metal/functional group-centric or target-oriented, thus hampering further developments. Therefore, in this review, different conceptual approaches based on C-C and C-O bond-forming events of alkynes such as carboxygenation (C-C and CO bond formation), carboalkoxylation (C-C and C-OR bond formation), and carboacetoxylation (C-C and C-OAc bond formations) are discussed, and examples from the literature from the last two decades are presented. Further, we have presented detailed insights into the mechanism of different transformations.
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Affiliation(s)
- Padmanava Barik
- PG Department of Chemistry, Bhadrak Autonomous College, Bhadrak, Odisha, 756100, India.
| | | | - Laxmi Kanta Nayak
- PG Department of Chemistry, Bhadrak Autonomous College, Bhadrak, Odisha, 756100, India.
| | | | - Santosh Kumar Nanda
- PG Department of Chemistry, Bhadrak Autonomous College, Bhadrak, Odisha, 756100, India.
| | - Padmanava Patri
- PG Department of Chemistry, Bhadrak Autonomous College, Bhadrak, Odisha, 756100, India.
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4
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Swann WA, Yadav A, Colvin NB, Freundl NK, Li CW. Diastereoselective Hydrogenation of Tetrasubstituted Olefins using a Heterogeneous Pt-Ni Alloy Catalyst. Angew Chem Int Ed Engl 2024; 63:e202317710. [PMID: 38407502 PMCID: PMC11098551 DOI: 10.1002/anie.202317710] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2023] [Revised: 02/24/2024] [Accepted: 02/26/2024] [Indexed: 02/27/2024]
Abstract
Stereoselective hydrogenation of tetrasubstituted olefins is an attractive method to access compounds with two contiguous stereocenters. However, homogeneous catalysts for enantio- and diastereoselective hydrogenation exhibit low reactivity toward tetrasubstituted olefins due to steric crowding between the ligand scaffold and the substrate. Monometallic heterogeneous catalysts, on the other hand, provide accessible surface active sites for hindered olefins but exhibit unpredictable and inconsistent stereoinduction. In this work, we develop a Pt-Ni bimetallic alloy catalyst that can diastereoselectively hydrogenate unactivated, sterically-bulky tetrasubstituted olefins, utilizing the more oxophilic Ni atoms to adsorb a hydroxyl directing group and direct facially-selective hydrogen addition to the olefin via the Pt atoms. Structure-activity studies on several Pt-Ni compositions underscore the importance of exposing a uniform PtNi alloy surface to achieve high diastereoselectivity and minimize side reactions. The optimized Pt-Ni/SiO2 catalyst exhibits good functional group tolerance and broad scope for tetrasubstituted olefins in a cyclopentene scaffold, generating cyclopentanol products with three contiguous stereocenters. The synthetic utility of the method is demonstrated in a four-step synthesis of (1R,2S)-(+)-cis-methyldihydrojasmonate with high yield and enantiopurity.
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Affiliation(s)
- William A. Swann
- Department of Chemistry, Purdue University, West Lafayette, IN 47907, USA
| | - Anish Yadav
- Department of Chemistry, Purdue University, West Lafayette, IN 47907, USA
| | - Nicholas B. Colvin
- Department of Chemistry, Purdue University, West Lafayette, IN 47907, USA
| | - Nicole K. Freundl
- Department of Chemistry, Purdue University, West Lafayette, IN 47907, USA
| | - Christina W. Li
- Department of Chemistry, Purdue University, West Lafayette, IN 47907, USA
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5
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Quezada V, Castroagudín M, Verdugo F, Ortiz S, Zaragoza G, Nachtigall FM, Reis FAA, Castro-Alvarez A, Santos LS, Nelson R. Nickel(II)-Catalyzed Formal [3+2] Cycloadditions between Indoles and Donor-Acceptor Cyclopropanes. Molecules 2024; 29:1604. [PMID: 38611883 PMCID: PMC11013886 DOI: 10.3390/molecules29071604] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2024] [Revised: 03/29/2024] [Accepted: 04/02/2024] [Indexed: 04/14/2024] Open
Abstract
This article describes the development of a nickel-catalyzed regio- and diastereoselective formal [3+2] cycloaddition between N-substituted indoles and donor-acceptor cyclopropanes to synthesize cyclopenta[b]indoles. Optimized reaction conditions provide the desired nitrogen-containing cycloadducts in up to 93% yield and dr 8.6:1 with complete regioselectivity. The substrate scope showed high tolerance to various substituted indoles and cyclopropanes, resulting in the synthesis of six new cyclopenta[b]indoles and the isolation of five derivatives previously reported in the literature. In addition, a mechanistic proposal for the reaction was studied through online reaction monitoring by ESI-MS, allowing for the identification of the reactive intermediates in the Ni(II) catalyzed process. X-ray crystallography confirmed the structure and relative endo stereochemistry of the products. This method enables the fast and efficient construction of fused indolines from readily accessible starting materials.
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Affiliation(s)
- Víctor Quezada
- Departamento de Química, Facultad de Ciencias, Universidad Católica del Norte, Avda. Angamos 0610, Antofagasta 1270709, Chile; (V.Q.); (M.C.)
| | - Mariña Castroagudín
- Departamento de Química, Facultad de Ciencias, Universidad Católica del Norte, Avda. Angamos 0610, Antofagasta 1270709, Chile; (V.Q.); (M.C.)
| | - Felipe Verdugo
- Departamento de Química Orgánica, Facultad de Ciencias Químicas, Universidad de Concepción, Edmundo Larenas 129, Concepción 4070371, Chile;
| | - Sergio Ortiz
- UMR 7200 Laboratoire d’Innovation Thérapeutique, CNRS, Strasbourg Drug Discovery and Development Institute (IMS), Université de Strasbourg, 67400 Illkirch-Graffenstaden, France;
| | - Guillermo Zaragoza
- Unidade de Difracción de Raios X, RIAIDT, Universidade de Santiago de Compostela, Campus VIDA, 15782 Santiago de Compostela, Spain;
| | - Fabiane M. Nachtigall
- Instituto de Ciencias Aplicadas, Universidad Autónoma de Chile, Talca 3467987, Chile;
| | - Francisco A. A. Reis
- Laboratory of Asymmetric Synthesis, Chemistry Institute of Natural Resources, Universidad de Talca, Talca 3460000, Chile;
| | - Alejandro Castro-Alvarez
- Departamento de Ciencias Preclínicas, Facultad de Medicina, Universidad de La Frontera, Temuco 4811230, Chile
| | - Leonardo S. Santos
- Laboratory of Asymmetric Synthesis, Chemistry Institute of Natural Resources, Universidad de Talca, Talca 3460000, Chile;
| | - Ronald Nelson
- Departamento de Química, Facultad de Ciencias, Universidad Católica del Norte, Avda. Angamos 0610, Antofagasta 1270709, Chile; (V.Q.); (M.C.)
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6
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Teng Y, Yu X, Shang D, Wang Z, Rao W. Brønsted Acid-Catalyzed Dehydrative Nazarov-type Cyclization of CF 3-Substituted 3-Indolylallyl Alcohols: Divergent Synthesis of 1-Trifluoromethylated Cyclopenta[ b]indoles. J Org Chem 2024. [PMID: 38175524 DOI: 10.1021/acs.joc.3c02331] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2024]
Abstract
An expedient and efficient synthetic method for the divergent synthesis of 1-trifluoromethylated cyclopenta[b]indoles that relies on Brønsted acid-catalyzed dehydrative Nazarov-type cyclization of CF3-substituted 3-indolylallyl alcohols is described. Two classes of 1-trifluoromethylated cyclopenta[b]indoles can be easily accessed simply by changing the NH-protecting group of indoles. With arylsulfonyl protected 3-indolylallyl alcohols as starting materials, the reaction provided the arylsulfonyl protected 1-trifluoromethylated cyclopenta[b]indoles in good to excellent yields, whereas pivaloyl (Piv) protected substrates led to the formation of NH-free 1-trifluoromethylated cyclolopenta[b]indoles with another alkenyl isomer. This protocol features tunable chemoselectivity, operational simplicity, excellent functional group compatibility, and mild metal-free conditions.
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Affiliation(s)
- Yuling Teng
- Jiangsu Co-Innovation Center for Efficient Processing and Utilization of Forsest Resources, College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China
| | - Xiangdong Yu
- Jiangsu Co-Innovation Center for Efficient Processing and Utilization of Forsest Resources, College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China
| | - Dandan Shang
- Jiangsu Co-Innovation Center for Efficient Processing and Utilization of Forsest Resources, College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China
| | - Zeliang Wang
- Jiangsu Co-Innovation Center for Efficient Processing and Utilization of Forsest Resources, College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China
| | - Weidong Rao
- Jiangsu Co-Innovation Center for Efficient Processing and Utilization of Forsest Resources, College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China
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7
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Zheng TL, Huo CY, Bao W, Xu XT, Dai WH, Cheng F, Duan DS, Yang LL, Zhang XM, Zhu DY, Wang SH. Au-Catalyzed Asymmetric Polyene Cyclization and Its Application in the Total Synthesis of (+)-2-Ketoferruginol, (+)-Fleuryinol B, (+)-Salviol, and (-)-Erythroxylisin A. Org Lett 2023; 25:7476-7480. [PMID: 37811851 DOI: 10.1021/acs.orglett.3c02417] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/10/2023]
Abstract
A catalytic asymmetric 1,3-acyloxy shift/polyene cyclization cascade has been achieved with good enantioselectivities under the catalysis of the chiral Au(I) reagent. The synthetic utility of this method has been showcased by the catalytic asymmetric total syntheses of (+)-2-ketoferruginol, (+)-fleuryinol B, and (+)-salviol. Notably, the first enantioselective total synthesis of (-)-erythroxylisin A has also been realized in 15 steps.
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Affiliation(s)
- Tian-Lu Zheng
- School of Pharmacy & State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000,P. R. China
| | - Chen-Yu Huo
- School of Pharmacy & State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000,P. R. China
| | - Wen Bao
- School of Pharmacy & State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000,P. R. China
| | - Xue-Tao Xu
- School of Biotechnology and Health Science, Wuyi University, Jiangmen 529020,P. R. China
| | - Wei-Hao Dai
- School of Pharmacy & State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000,P. R. China
| | - Fu Cheng
- School of Pharmacy & State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000,P. R. China
| | - Dong-Sen Duan
- School of Pharmacy & State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000,P. R. China
| | - Le-Le Yang
- School of Pharmacy & State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000,P. R. China
| | - Xiao-Ming Zhang
- School of Pharmacy & State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000,P. R. China
| | - Dao-Yong Zhu
- School of Pharmacy & State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000,P. R. China
| | - Shao-Hua Wang
- School of Pharmacy & State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000,P. R. China
- School of Biotechnology and Health Science, Wuyi University, Jiangmen 529020,P. R. China
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8
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Miguélez R, Barrio P, González JM. Recent Advances in the Catalytic Synthesis of the Cyclopentene Core. CHEM REC 2023:e202300254. [PMID: 37821421 DOI: 10.1002/tcr.202300254] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2023] [Revised: 09/21/2023] [Indexed: 10/13/2023]
Abstract
Five-membered carbocycles are ubiquitously found in natural products, pharmaceuticals, and other classes of organic compounds. Within this category, cyclopentenes deserve special attention due to their prevalence as targets and as well as key intermediates for synthesizing more complex molecules. Herein, we offer an overview summarizing some significant recent advances in the catalytic assembly of this structural motif. A great variety of synthetic methodologies and strategies are covered, including transition metal-catalyzed or organocatalyzed processes. Both inter- and intramolecular transformations are documented. On this ground, our expertise in the application of C-H functionalization reactions oriented towards the formation of this ring and its subsequent selective functionalization is embedded.
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Affiliation(s)
- Rubén Miguélez
- Departamento de Química Orgánica e Inorgánica, Instituto Universitario de Química Organometálica "Enrique Moles", Universidad de Oviedo, Julián Clavería 8, 33006, Oviedo, Spain
| | - Pablo Barrio
- Departamento de Química Orgánica e Inorgánica, Instituto Universitario de Química Organometálica "Enrique Moles", Universidad de Oviedo, Julián Clavería 8, 33006, Oviedo, Spain
| | - José M González
- Departamento de Química Orgánica e Inorgánica, Instituto Universitario de Química Organometálica "Enrique Moles", Universidad de Oviedo, Julián Clavería 8, 33006, Oviedo, Spain
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9
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Zhu BH, Ye SB, Nie ML, Xie ZY, Wang YB, Qian PC, Sun Q, Ye LW, Li L. I 2 -Catalyzed Cycloisomerization of Ynamides: Chemoselective and Divergent Access to Indole Derivatives. Angew Chem Int Ed Engl 2023; 62:e202215616. [PMID: 36573021 DOI: 10.1002/anie.202215616] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2022] [Indexed: 12/28/2022]
Abstract
Herein, an I2 -catalyzed unprecedented cycloisomerization of ynamides is developed, furnishing various functionalized bis(indole) derivatives in generally good to excellent yields with wide substrate scope and excellent atom-economy. This protocol not only represents the first molecular-iodine-catalyzed tandem complex alkyne cycloisomerizations, but also constitutes the first chemoselective cycloisomerization of tryptamine-ynamides involving distinctively different C(sp3 )-C(sp3 ) bond cleavage and rearrangement. Moreover, chiral tetrahydropyridine frameworks containing two stereocenters are obtained with moderate to excellent diastereoselectivities and excellent enantioselectivities. Meanwhile, cycloisomerization and aromatization of ynamides produce pyrrolyl indoles with high efficiency enabled by I2 . Additionally, control experiments and theoretical calculations reveal that this reaction probably undergoes a tandem 5-exo-dig cyclization/rearrangement process.
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Affiliation(s)
- Bo-Han Zhu
- College of Chemistry & Materials Engineering, Wenzhou University, Wenzhou, 325035, China.,Wenzhou Key Laboratory of Technology and Application of Environmental Functional Materials, Institute of New Materials & Industry Technology, Wenzhou University, Wenzhou, 325000, China
| | - Sheng-Bing Ye
- College of Chemistry & Materials Engineering, Wenzhou University, Wenzhou, 325035, China.,Wenzhou Key Laboratory of Technology and Application of Environmental Functional Materials, Institute of New Materials & Industry Technology, Wenzhou University, Wenzhou, 325000, China
| | - Min-Ling Nie
- College of Chemistry & Materials Engineering, Wenzhou University, Wenzhou, 325035, China.,Wenzhou Key Laboratory of Technology and Application of Environmental Functional Materials, Institute of New Materials & Industry Technology, Wenzhou University, Wenzhou, 325000, China
| | - Zhong-Yang Xie
- College of Chemistry & Materials Engineering, Wenzhou University, Wenzhou, 325035, China.,Wenzhou Key Laboratory of Technology and Application of Environmental Functional Materials, Institute of New Materials & Industry Technology, Wenzhou University, Wenzhou, 325000, China
| | - Yi-Bo Wang
- College of Chemistry & Materials Engineering, Wenzhou University, Wenzhou, 325035, China.,Wenzhou Key Laboratory of Technology and Application of Environmental Functional Materials, Institute of New Materials & Industry Technology, Wenzhou University, Wenzhou, 325000, China
| | - Peng-Cheng Qian
- College of Chemistry & Materials Engineering, Wenzhou University, Wenzhou, 325035, China.,Wenzhou Key Laboratory of Technology and Application of Environmental Functional Materials, Institute of New Materials & Industry Technology, Wenzhou University, Wenzhou, 325000, China
| | - Qing Sun
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University, Nanchang, 330063, China
| | - Long-Wu Ye
- State Key Laboratory of Physical Chemistry of Solid Surfaces and College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China
| | - Long Li
- College of Chemistry & Materials Engineering, Wenzhou University, Wenzhou, 325035, China.,Wenzhou Key Laboratory of Technology and Application of Environmental Functional Materials, Institute of New Materials & Industry Technology, Wenzhou University, Wenzhou, 325000, China.,State Key Laboratory of Physical Chemistry of Solid Surfaces and College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China
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10
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Cheng Q, Yan W, Li T, Jiao Y, Tang Z. Insights into the regioselectivity and diastereoselectivity of the Nazarov cyclization of 3-alkenyl-2-indolylmethanol with tryptophol. Org Chem Front 2023. [DOI: 10.1039/d2qo01896a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/06/2023]
Abstract
Density functional theory calculations of Nazarov cyclizations showed that 3-alkenyl-2-indolylmethanol and tryptophol formed binary and ternary complexes, respectively, in the presence and absence of H2O to produce C–N and C–C products.
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Affiliation(s)
- Qi Cheng
- School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan, 411201, China
| | - Wenxin Yan
- School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan, 411201, China
| | - Tian Li
- School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan, 411201, China
| | - Yinchun Jiao
- School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan, 411201, China
- Key Laboratory of Theoretical Organic Chemistry and Functional Molecular, Ministry of Education, Hunan Provincial Key Laboratory of Controllable Preparation and Functional Application of Fine Polymers, Hunan University of Science and Technology, Xiangtan, 411201, China
| | - Zilong Tang
- School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan, 411201, China
- Key Laboratory of Theoretical Organic Chemistry and Functional Molecular, Ministry of Education, Hunan Provincial Key Laboratory of Controllable Preparation and Functional Application of Fine Polymers, Hunan University of Science and Technology, Xiangtan, 411201, China
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11
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Meng FT, Wang YN, Qin XY, Li SJ, Li J, Hao WJ, Tu SJ, Lan Y, Jiang B. Azoarene activation for Schmidt-type reaction and mechanistic insights. Nat Commun 2022; 13:7393. [PMID: 36450750 PMCID: PMC9712421 DOI: 10.1038/s41467-022-35141-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2022] [Accepted: 11/18/2022] [Indexed: 12/04/2022] Open
Abstract
The Schmidt rearrangement, a reaction that enables C-C or C-H σ bond cleavage and nitrogen insertion across an aldehyde or ketone substrate, is one of the most important and widely used synthetic tools for the installation of amides and nitriles. However, such a reaction frequently requires volatile, potentially explosive, and highly toxic azide reagents as the nitrogen donor, thus limiting its application to some extent. Here, we show a Schmidt-type reaction where aryldiazonium salts act as the nitrogen precursor and in-situ-generated cyclopenta-1,4-dien-1-yl acetates serve as pronucleophiles from gold-catalyzed Nazarov cyclization of 1,3-enyne acetates. Noteworthy is that cycloketone-derived 1,3-enyne acetates enabled ring-expansion relay to access a series of 2-pyridone-containing fused heterocycles, in which nonsymmetric cycloketone-derived counterparts demonstrated high regioselectivity. Aside from investigating the scope of this Schmidt-type reaction, mechanistic details of this transformation are provided by performing systematic theoretical calculations.
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Affiliation(s)
- Fan-Tao Meng
- School of Chemistry & Materials Science, Jiangsu Normal University, Xuzhou, 221116, P. R. China
| | - Ya-Nan Wang
- College of Chemistry and Institute of Green Catalysis, Zhengzhou University, Zhengzhou, Henan, 450001, China
| | - Xiao-Yan Qin
- School of Chemistry & Materials Science, Jiangsu Normal University, Xuzhou, 221116, P. R. China
| | - Shi-Jun Li
- College of Chemistry and Institute of Green Catalysis, Zhengzhou University, Zhengzhou, Henan, 450001, China
| | - Jing Li
- School of Chemistry & Materials Science, Jiangsu Normal University, Xuzhou, 221116, P. R. China
| | - Wen-Juan Hao
- School of Chemistry & Materials Science, Jiangsu Normal University, Xuzhou, 221116, P. R. China.
| | - Shu-Jiang Tu
- School of Chemistry & Materials Science, Jiangsu Normal University, Xuzhou, 221116, P. R. China
| | - Yu Lan
- College of Chemistry and Institute of Green Catalysis, Zhengzhou University, Zhengzhou, Henan, 450001, China.
| | - Bo Jiang
- School of Chemistry & Materials Science, Jiangsu Normal University, Xuzhou, 221116, P. R. China.
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12
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Solas M, Suárez‐Pantiga S, Sanz R. Asymmetric Gold(I)-Catalyzed Tandem Hydroarylation-Nazarov Cyclization: Enantioselective Access to Cyclopentenones. Angew Chem Int Ed Engl 2022; 61:e202207406. [PMID: 35785510 PMCID: PMC9544548 DOI: 10.1002/anie.202207406] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2022] [Indexed: 11/13/2022]
Abstract
The asymmetric synthesis of cyclopentachromenones from gold-catalyzed reaction of readily available skipped alkenynones is described. This cascade reaction involves an initial anti-Michael hydroarylation of the ynone moiety to form a gold-functionalized dialkenylketone intermediate, followed by a Nazarov cyclization that proceeds in an unprecedented enantioselective manner. Excellent enantiomeric ratios and chemical yields are obtained under mild reaction conditions.
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Affiliation(s)
- Marta Solas
- Área de Química Orgánica. Departamento de QuímicaFacultad de CienciasUniversidad de BurgosPza. Misael Bañuelos09001BurgosSpain
| | - Samuel Suárez‐Pantiga
- Área de Química Orgánica. Departamento de QuímicaFacultad de CienciasUniversidad de BurgosPza. Misael Bañuelos09001BurgosSpain
| | - Roberto Sanz
- Área de Química Orgánica. Departamento de QuímicaFacultad de CienciasUniversidad de BurgosPza. Misael Bañuelos09001BurgosSpain
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13
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Solas M, Suárez-Pantiga S, Sanz R. Asymmetric Gold(I)‐Catalyzed Tandem Hydroarylation‐Nazarov Cyclization: Enantioselective Access to Cyclopentenones. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202207406] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Marta Solas
- Universidad de Burgos Química Facultad de CienciasPza. Misael Bañuelos, s/n 09001 Burgos SPAIN
| | - Samuel Suárez-Pantiga
- Universidad de Burgos Química Facultad de CienciasPza. Misael Bañuelos, s/n 09001 Burgos SPAIN
| | - Roberto Sanz
- Universidad de Burgos Área de Química Orgánica Departamento de Química Facultad de Ciencias Pza. Misael Bañuelos s/n 09001 Burgos SPAIN
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14
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Xu B, Zhang Z, Han J, Gu G, Zhang J. Enantioselectivity Tunable Gold‐catalyzed Intermolecular [3+2] Cycloaddition of
N
‐Allenamides
with Nitrones. CHINESE J CHEM 2022. [DOI: 10.1002/cjoc.202200017] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Bing Xu
- Department of Chemistry Fudan University, 2005 Songhu Road Shanghai 200438 P. R. China
- Zhuhai Fudan Innovation Institute Zhuhai 519000 China
| | - Zhan‐Ming Zhang
- Department of Chemistry Fudan University, 2005 Songhu Road Shanghai 200438 P. R. China
| | - Jie Han
- Department of Chemistry Fudan University, 2005 Songhu Road Shanghai 200438 P. R. China
- Zhuhai Fudan Innovation Institute Zhuhai 519000 China
| | - Guangxin Gu
- Department of Materials Science Fudan University, 2005 Songhu Road Shanghai 200438 P.R China
- Zhuhai Fudan Innovation Institute Zhuhai 519000 China
| | - Junliang Zhang
- Department of Chemistry Fudan University, 2005 Songhu Road Shanghai 200438 P. R. China
- Zhuhai Fudan Innovation Institute Zhuhai 519000 China
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15
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Escofet I, Zuccarello G, Echavarren AM. Gold-catalyzed enantioselective cyclizations and cycloadditions. ADVANCES IN ORGANOMETALLIC CHEMISTRY 2022. [DOI: 10.1016/bs.adomc.2022.01.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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16
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Meng FT, Chen JL, Qin XY, Zhang TS, Tu SJ, Jiang B, Hao WJ. Gold self-relay catalysis for accessing functionalized cyclopentenones bearing an all-carbon quaternary stereocenter. Org Chem Front 2022. [DOI: 10.1039/d1qo01313k] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
A new gold(i) self-relay catalysis consisting of a 3,3-rearrangement, Nazarov cyclization and Michael addition cascade of 1,3-enyne acetates with aurones and their derived azadienes is reported, producing functionalized cyclopentenones.
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Affiliation(s)
- Fan-Tao Meng
- School of Chemistry & Materials Science, Jiangsu Normal University, Xuzhou, 221116, P. R. China
| | - Jing-Long Chen
- School of Chemistry & Materials Science, Jiangsu Normal University, Xuzhou, 221116, P. R. China
| | - Xiao-Yan Qin
- School of Chemistry & Materials Science, Jiangsu Normal University, Xuzhou, 221116, P. R. China
| | - Tian-Shu Zhang
- School of Materials and Chemical Engineering, Xuzhou University of Technology, Xuzhou 221018, P. R. China
| | - Shu-Jiang Tu
- School of Chemistry & Materials Science, Jiangsu Normal University, Xuzhou, 221116, P. R. China
| | - Bo Jiang
- School of Chemistry & Materials Science, Jiangsu Normal University, Xuzhou, 221116, P. R. China
| | - Wen-Juan Hao
- School of Chemistry & Materials Science, Jiangsu Normal University, Xuzhou, 221116, P. R. China
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17
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Zuccarello G, Escofet I, Caniparoli U, Echavarren AM. New-Generation Ligand Design for the Gold-Catalyzed Asymmetric Activation of Alkynes. Chempluschem 2021; 86:1283-1296. [PMID: 34472729 PMCID: PMC8457203 DOI: 10.1002/cplu.202100232] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2021] [Revised: 07/09/2021] [Indexed: 01/01/2023]
Abstract
Gold(I) catalysts are ideal for the activation of alkynes under very mild conditions. However, unlike allenes or alkenes, the triple bond of alkynes cannot be prochiral. In addition, the linear coordination displayed by gold(I) complexes places the chiral ligand far away from the substrate resulting in an inefficient transfer of chiral information. This poses a significant challenge for the achievement of high enantiocontrol in gold(I)-catalyzed reactions of alkynes. Although considerable progress on enantioselective gold(I)-catalyzed transformations has recently been achieved, the asymmetric activation of non-prochiral alkyne-containing small molecules still represents a great challenge. Herein we summarize recent advances in intra- and intermolecular enantioselective gold(I)-catalyzed reactions involving alkynes, discussing new chiral ligand designs that lie at the basis of these developments. We also focus on the mode of action of these catalysts, their possible limitations towards a next-generation of more efficient ligand designs. Finally, square planar chiral gold(III) complexes, which offer an alternative to chiral gold(I) complexes, are also discussed.
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Affiliation(s)
- Giuseppe Zuccarello
- Institute of Chemical Research of Catalonia (ICIQ)Barcelona Institute of Science and Technology (BIST)Av. Països Catalans 1643007TarragonaSpain
- Departament de Química Orgànica i AnalíticaUniversitat Rovira i Virgili (URV)C/Marcel⋅lí Domingo s/n43007TarragonaSpain
| | - Imma Escofet
- Institute of Chemical Research of Catalonia (ICIQ)Barcelona Institute of Science and Technology (BIST)Av. Països Catalans 1643007TarragonaSpain
- Departament de Química Orgànica i AnalíticaUniversitat Rovira i Virgili (URV)C/Marcel⋅lí Domingo s/n43007TarragonaSpain
| | - Ulysse Caniparoli
- Institute of Chemical Research of Catalonia (ICIQ)Barcelona Institute of Science and Technology (BIST)Av. Països Catalans 1643007TarragonaSpain
- Departament de Química Orgànica i AnalíticaUniversitat Rovira i Virgili (URV)C/Marcel⋅lí Domingo s/n43007TarragonaSpain
| | - Antonio M. Echavarren
- Institute of Chemical Research of Catalonia (ICIQ)Barcelona Institute of Science and Technology (BIST)Av. Països Catalans 1643007TarragonaSpain
- Departament de Química Orgànica i AnalíticaUniversitat Rovira i Virgili (URV)C/Marcel⋅lí Domingo s/n43007TarragonaSpain
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18
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Ghosh B, Balhara R, Jindal G, Mukherjee S. Catalytic Enantioselective Desymmetrizing Fischer Indolization through Dynamic Kinetic Resolution. Angew Chem Int Ed Engl 2021; 60:9086-9092. [PMID: 33555647 DOI: 10.1002/anie.202017268] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2020] [Indexed: 12/14/2022]
Abstract
The first catalytic enantioselective Fischer indolization of prochiral diketones containing enantiotopic carbonyl groups is developed and shown to proceed through dynamic kinetic resolution (DKR). Catalyzed by the combination of a spirocyclic chiral phosphoric acid and ZnCl2 (Lewis acid assisted Brønsted acid), this direct approach combines 2,2-disubstituted cyclopentane-1,3-diones with N-protected phenylhydrazines to furnish cyclopenta[b]indole derivatives containing an all-carbon quaternary stereocenter with good to excellent enantioselectivities.
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Affiliation(s)
- Biki Ghosh
- Department of Organic Chemistry, Indian Institute of Science, Bangalore, 560 012, India
| | - Reena Balhara
- Department of Organic Chemistry, Indian Institute of Science, Bangalore, 560 012, India
| | - Garima Jindal
- Department of Organic Chemistry, Indian Institute of Science, Bangalore, 560 012, India
| | - Santanu Mukherjee
- Department of Organic Chemistry, Indian Institute of Science, Bangalore, 560 012, India
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19
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Ghosh B, Balhara R, Jindal G, Mukherjee S. Catalytic Enantioselective Desymmetrizing Fischer Indolization through Dynamic Kinetic Resolution. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202017268] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Biki Ghosh
- Department of Organic Chemistry Indian Institute of Science Bangalore 560 012 India
| | - Reena Balhara
- Department of Organic Chemistry Indian Institute of Science Bangalore 560 012 India
| | - Garima Jindal
- Department of Organic Chemistry Indian Institute of Science Bangalore 560 012 India
| | - Santanu Mukherjee
- Department of Organic Chemistry Indian Institute of Science Bangalore 560 012 India
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20
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Chintawar CC, Yadav AK, Kumar A, Sancheti SP, Patil NT. Divergent Gold Catalysis: Unlocking Molecular Diversity through Catalyst Control. Chem Rev 2021; 121:8478-8558. [PMID: 33555193 DOI: 10.1021/acs.chemrev.0c00903] [Citation(s) in RCA: 130] [Impact Index Per Article: 43.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
The catalyst-directed divergent synthesis, commonly termed as "divergent catalysis", has emerged as a promising technique as it allows chartering of structurally distinct products from common substrates simply by modulating the catalyst system. In this regard, gold complexes emerged as powerful catalysts as they offer unique reactivity profiles as compared to various other transition metal catalysts, primarily due to their salient electronic and geometrical features. Owing to the tunable soft π-acidic nature, gold catalysts not only evolved as superior contenders for catalyzing the reactions of alkynes, alkenes, and allenes but also, more intriguingly, have been found to provide divergent reaction pathways over other π-acid catalysts such as Ag, Pt, Pd, Rh, Cu, In, Sc, Hg, Zn, etc. The recent past has witnessed a renaissance in such examples wherein, by choosing gold catalysts over other transition metal catalysts or by fine-tuning the ligands, counteranions or oxidation states of the gold catalyst itself, a complete reactivity switch was observed. However, reviews documenting such examples are sporadic; as a result, most of the reports of this kind remained scattered in the literature, thereby hampering further development of this burgeoning field. By conceptualizing the idea of "Divergent Gold Catalysis (DGC)", this review aims to consolidate all such reports and provide a unified approach necessary to pave the way for further advancement of this exciting area. Based on the factors governing the divergence in product formation, an explicit classification of DGC has been provided. To gain a fundamental understanding of the divergence in observed reactivities and selectivities, the review is accompanied by mechanistic insights at appropriate places.
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Affiliation(s)
- Chetan C Chintawar
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhauri, Bhopal 462 066, India
| | - Amit K Yadav
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhauri, Bhopal 462 066, India
| | - Anil Kumar
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhauri, Bhopal 462 066, India
| | - Shashank P Sancheti
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhauri, Bhopal 462 066, India
| | - Nitin T Patil
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhauri, Bhopal 462 066, India
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21
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Boyko YD, Huck CJ, Ning S, Shved AS, Yang C, Chu T, Tonogai EJ, Hergenrother PJ, Sarlah D. Synthetic Studies on Selective, Proapoptotic Isomalabaricane Triterpenoids Aided by Computational Techniques. J Am Chem Soc 2021; 143:2138-2155. [DOI: 10.1021/jacs.0c12569] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Yaroslav D. Boyko
- Roger Adams Laboratory, Department of Chemistry, University of Illinois, Urbana, Illinois 61801, United States
- Cancer Center at Illinois, University of Illinois, Urbana, Illinois 61801, United States
| | - Christopher J. Huck
- Roger Adams Laboratory, Department of Chemistry, University of Illinois, Urbana, Illinois 61801, United States
- Cancer Center at Illinois, University of Illinois, Urbana, Illinois 61801, United States
| | - Shang Ning
- Roger Adams Laboratory, Department of Chemistry, University of Illinois, Urbana, Illinois 61801, United States
| | - Alexander S. Shved
- Roger Adams Laboratory, Department of Chemistry, University of Illinois, Urbana, Illinois 61801, United States
- Cancer Center at Illinois, University of Illinois, Urbana, Illinois 61801, United States
| | - Cheng Yang
- Roger Adams Laboratory, Department of Chemistry, University of Illinois, Urbana, Illinois 61801, United States
| | - Tiffany Chu
- Roger Adams Laboratory, Department of Chemistry, University of Illinois, Urbana, Illinois 61801, United States
| | - Emily J. Tonogai
- Roger Adams Laboratory, Department of Chemistry, University of Illinois, Urbana, Illinois 61801, United States
- Cancer Center at Illinois, University of Illinois, Urbana, Illinois 61801, United States
- Carl R. Woese Institute for Genomic Biology, University of Illinois, Urbana, Illinois 61801, United States
| | - Paul J. Hergenrother
- Roger Adams Laboratory, Department of Chemistry, University of Illinois, Urbana, Illinois 61801, United States
- Cancer Center at Illinois, University of Illinois, Urbana, Illinois 61801, United States
- Carl R. Woese Institute for Genomic Biology, University of Illinois, Urbana, Illinois 61801, United States
| | - David Sarlah
- Roger Adams Laboratory, Department of Chemistry, University of Illinois, Urbana, Illinois 61801, United States
- Cancer Center at Illinois, University of Illinois, Urbana, Illinois 61801, United States
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22
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Bag D, Sawant SD. Heteroarene-tethered Functionalized Alkyne Metamorphosis. Chemistry 2021; 27:1165-1218. [PMID: 32603015 DOI: 10.1002/chem.202002154] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2020] [Indexed: 12/11/2022]
Abstract
Heteroarene-tethered functionalized alkynes are multipotent synthons in organic chemistry. This detailed Review described herein offers a thorough discussion of the metamorphosis of heteroarene-tethered functionalized alkynes, an area which has earned much attention over the past decade in the straightforward synthesis of architecturally complex heterocyclic scaffolds in atom and step economic manner. Depending upon the variety of functionalized alkynes, this Review is divided into multiple sections. Amongst the vast array of synthetic transformations covered, dearomatizing spirocyclizations and cascade spirocyclization/rearrangement are of great interest. Synthetic transformations involving the heteroarene-tethered functionalized alkynes with scope, challenges, limitations, mechanism, their application in the total synthesis of natural products and future perceptions are surveyed.
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Affiliation(s)
- Debojyoti Bag
- Laboratory 212, Medicinal Chemistry Division, CSIR-Indian Institute of Integrative Medicine Jammu, Canal Road, Jammu, Jammu and Kashmir, 180001, India
| | - Sanghapal D Sawant
- Laboratory 212, Medicinal Chemistry Division, CSIR-Indian Institute of Integrative Medicine Jammu, Canal Road, Jammu, Jammu and Kashmir, 180001, India
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23
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Campeau D, León Rayo DF, Mansour A, Muratov K, Gagosz F. Gold-Catalyzed Reactions of Specially Activated Alkynes, Allenes, and Alkenes. Chem Rev 2020; 121:8756-8867. [DOI: 10.1021/acs.chemrev.0c00788] [Citation(s) in RCA: 89] [Impact Index Per Article: 22.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Dominic Campeau
- Department of Chemistry and Biomolecular Sciences, University of Ottawa, K1N 6N5 Ottawa, Canada
| | - David F. León Rayo
- Department of Chemistry and Biomolecular Sciences, University of Ottawa, K1N 6N5 Ottawa, Canada
| | - Ali Mansour
- Department of Chemistry and Biomolecular Sciences, University of Ottawa, K1N 6N5 Ottawa, Canada
| | - Karim Muratov
- Department of Chemistry and Biomolecular Sciences, University of Ottawa, K1N 6N5 Ottawa, Canada
| | - Fabien Gagosz
- Department of Chemistry and Biomolecular Sciences, University of Ottawa, K1N 6N5 Ottawa, Canada
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24
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Liu X, Liu Y, Chen L. Tandem Annulations of Propargylic Alcohols to Indole Derivatives. Adv Synth Catal 2020. [DOI: 10.1002/adsc.202000930] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Xiao‐Yan Liu
- Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province Sichuan Industrial Institute of Antibiotics Chengdu University 168 Hua Guan Road Chengdu 610052 People's Republic of China
| | - Yun‐Lin Liu
- School of Chemistry and Chemical Engineering Guangzhou University 230 Wai Huan Xi Road Guangzhou 510006 People's Republic of China
| | - Long Chen
- Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province Sichuan Industrial Institute of Antibiotics Chengdu University 168 Hua Guan Road Chengdu 610052 People's Republic of China
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25
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Praveen C. Regio‐ and Site‐selective Molecular Rearrangements by Homogeneous Gold Catalysis. ASIAN J ORG CHEM 2020. [DOI: 10.1002/ajoc.202000444] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Chandrasekar Praveen
- Electrochemical Power Sources Division Central Electrochemical Research Institute (CSIR-Laboratory) Alagappapuram Karaikudi-630003, Sivagangai District Tamil Nadu India
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26
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Jiang F, Fu C, Ma S. Asymmetric construction of pyrido[1,2- a]-1 H-indole derivatives via a gold-catalyzed cycloisomerization. Chem Sci 2020; 12:696-701. [PMID: 34163802 PMCID: PMC8179015 DOI: 10.1039/d0sc05619g] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Pyrido[1,2-a]-1H-indoles are important scaffolds found in many biologically active compounds. Herein, we first developed an IPrAuCl/AgSbF6-catalyzed cycloisomerization of N-1,3-disubstituted allenyl indoles affording pyrido[1,2-a]-1H-indoles. Then the axial-to-central chirality transfer starting from enantio-enriched N-1,3-disubstituted allenylindoles affording optically active pyrido[1,2-a]-1H-indoles has been realized in excellent yields and enantioselectivities. A mechanism has been proposed based on mechanistic studies. Synthetic applications have also been demonstrated.
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Affiliation(s)
- Feng Jiang
- Laboratory of Molecular Recognition and Synthesis, Department of Chemistry, Zhejiang University Hangzhou 310027 Zhejiang People's Republic of China
| | - Chunling Fu
- Laboratory of Molecular Recognition and Synthesis, Department of Chemistry, Zhejiang University Hangzhou 310027 Zhejiang People's Republic of China
| | - Shengming Ma
- Laboratory of Molecular Recognition and Synthesis, Department of Chemistry, Zhejiang University Hangzhou 310027 Zhejiang People's Republic of China
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27
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Hussein AA, Ali HS. Revealing the Mechanism and Origin of Reactivity of Au(I)-Catalyzed Functionalized Indenone Formation of Cyclic and Acyclic Acetals of Alkynylaldehydes. J Org Chem 2020; 85:12682-12691. [PMID: 32865412 DOI: 10.1021/acs.joc.0c01845] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
A density functional theory study is presented here to offer mechanistic insights and explications of experimentally intriguing observations in the Au(I)-catalyzed cyclization of cyclic and acyclic acetals of alkynylaldehydes that leads to indenone formation. The reactivity of catalytic cycles with and without methoxy migration is clearly defined when the alkyne terminus is phenylated. The reaction mechanism of indenone formation proceeds first with the coordination of Au(I) to alkyne to initiate the reaction with 1,5-H shift as a rate-determining step (RDS), and the fastest 1,5-H shift is achieved when one phenyl ring carries an electron-donating group and the other one is substituted with an electron-withdrawing group. Following the 1,5-H shift, the reaction undergoes feasible steps that are cyclization and 1,2-H shift before elimination to persist the iterative cycle, but the reactivity of both steps is highly affected by the existence of the phenyl group on the alkyne terminus. The unreactivity of the alkyne terminus not bearing a phenyl ring is because the cyclization is thermodynamically disfavorable, subsequently deactivating the 1,2-H shift kinetically and thermodynamically. The absence of a tether in the acetal unit considerably outpaces any 1,5-H shift and instead activates 1,5-methoxy migration, giving methoxy-migrated indenone, with the 1,2-OMe shift being an RDS.
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Affiliation(s)
- Aqeel A Hussein
- College of Dentistry, University of Al-Ameed, Karbala P.O. Box 198, Iraq
| | - Hafiz S Ali
- Department of Chemistry and Manchester Institute of Biotechnology, The University of Manchester, 131 Princess Street, Manchester M1 7DN, U.K
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28
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Xiong J, Zhao X, Feng X, Xianxing J. Decarboxylative Propargylation/Hydroamination/Aromatization Enabled by Copper/ Amine Cooperative Catalysis: Construction of Cyclopenta[b]indole Derivatives. CURR ORG CHEM 2020. [DOI: 10.2174/1385272824999200701115141] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
An efficient decarboxylative cycloaddition of 2,3-dioxopyrrolidines and ethynyl
benzoxazinanones has been established by cooperative copper/amine catalysis. A copper–
allenylidene complex and enolate intermediate, each catalytically generated from distinct
substrates, underwent a cascade propargylation/hydroamination/aromatization process to
construct a big library of cyclopenta[b]indole derivatives with good to excellent yields and
excellent diastereoselectivity.
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Affiliation(s)
- Jiale Xiong
- School of Pharmaceutical Sciences, Sun Yat-Sen University, Guangzhou, 510006, China
| | - Xiaoyun Zhao
- School of Pharmaceutical Sciences, Sun Yat-Sen University, Guangzhou, 510006, China
| | - Xing Feng
- School of Pharmaceutical Sciences, Sun Yat-Sen University, Guangzhou, 510006, China
| | - Jiang Xianxing
- School of Pharmaceutical Sciences, Sun Yat-Sen University, Guangzhou, 510006, China
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29
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Brønsted acid promoted C–C bond formation between indolylmethyl electrophiles and ketene dithioacetals: Diastereoselective synthesis of highly functionalized cyclopenta[b]indoles. Tetrahedron Lett 2020. [DOI: 10.1016/j.tetlet.2020.152349] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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30
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Wang MY, Zhu XQ, Zhang XL, Guo RL, Jia Q, Wang YQ. Synthesis of trifluoromethylthioesters from aldehydes via a visible light-promoted radical process. Org Biomol Chem 2020; 18:5918-5926. [PMID: 32691819 DOI: 10.1039/d0ob01160f] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
We report herein an efficient, economical, and scalable trifluoromethylthiolation of aldehydes to generate trifluoromethylthioesters via a visible light-promoted radical process. The transformation features cheap reagents, simple operation, a broad substrate scope, and especially no metal involved in the reaction. Trifluoromethylthiolations of several complex aldehyde-containing bioactive compounds have been realized; thus the approach has the potential to be an important tool for the late-stage functionalization of advanced synthetic intermediates and bioactive molecules, and should have many applications in medicinal chemistry.
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Affiliation(s)
- Meng-Yue Wang
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education, School of Foreign Languages, College of Chemistry & Materials Science, Northwest University, Xi'an 710069, People's Republic of China.
| | - Xue-Qing Zhu
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education, School of Foreign Languages, College of Chemistry & Materials Science, Northwest University, Xi'an 710069, People's Republic of China.
| | - Xing-Long Zhang
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education, School of Foreign Languages, College of Chemistry & Materials Science, Northwest University, Xi'an 710069, People's Republic of China.
| | - Rui-Li Guo
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education, School of Foreign Languages, College of Chemistry & Materials Science, Northwest University, Xi'an 710069, People's Republic of China.
| | - Qiong Jia
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education, School of Foreign Languages, College of Chemistry & Materials Science, Northwest University, Xi'an 710069, People's Republic of China.
| | - Yong-Qiang Wang
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education, School of Foreign Languages, College of Chemistry & Materials Science, Northwest University, Xi'an 710069, People's Republic of China.
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31
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Magné V, Sanogo Y, Demmer CS, Retailleau P, Marinetti A, Guinchard X, Voituriez A. Chiral Phosphathiahelicenes: Improved Synthetic Approach and Uses in Enantioselective Gold(I)-Catalyzed [2 + 2] Cycloadditions of N-Homoallenyl Tryptamines. ACS Catal 2020. [DOI: 10.1021/acscatal.0c01819] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Valentin Magné
- Institut de Chimie des Substances Naturelles, Université Paris-Saclay, CNRS, UPR 2301, 91198 Gif-sur-Yvette, France
| | - Youssouf Sanogo
- Institut de Chimie des Substances Naturelles, Université Paris-Saclay, CNRS, UPR 2301, 91198 Gif-sur-Yvette, France
| | - Charles S. Demmer
- Institut de Chimie des Substances Naturelles, Université Paris-Saclay, CNRS, UPR 2301, 91198 Gif-sur-Yvette, France
| | - Pascal Retailleau
- Institut de Chimie des Substances Naturelles, Université Paris-Saclay, CNRS, UPR 2301, 91198 Gif-sur-Yvette, France
| | - Angela Marinetti
- Institut de Chimie des Substances Naturelles, Université Paris-Saclay, CNRS, UPR 2301, 91198 Gif-sur-Yvette, France
| | - Xavier Guinchard
- Institut de Chimie des Substances Naturelles, Université Paris-Saclay, CNRS, UPR 2301, 91198 Gif-sur-Yvette, France
| | - Arnaud Voituriez
- Institut de Chimie des Substances Naturelles, Université Paris-Saclay, CNRS, UPR 2301, 91198 Gif-sur-Yvette, France
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32
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Hu C, Wang T, Rudolph M, Oeser T, Asiri AM, Hashmi ASK. Gold(I)‐katalysierte Cycloisomerisierung von 3‐Alkoxy‐1,6‐diinen: ein einfacher Zugang zu Bicyclo[2.2.1]hept‐5‐en‐2‐onen. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.201914284] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Chao Hu
- Organisch-Chemisches Institut Universität Heidelberg Im Neuenheimer Feld 270 69120 Heidelberg Deutschland
| | - Tao Wang
- Organisch-Chemisches Institut Universität Heidelberg Im Neuenheimer Feld 270 69120 Heidelberg Deutschland
| | - Matthias Rudolph
- Organisch-Chemisches Institut Universität Heidelberg Im Neuenheimer Feld 270 69120 Heidelberg Deutschland
| | - Thomas Oeser
- Organisch-Chemisches Institut Universität Heidelberg Im Neuenheimer Feld 270 69120 Heidelberg Deutschland
| | - Abdullah M. Asiri
- Chemistry Department Faculty of Science King Abdulaziz University Jeddah 21589 Saudi-Arabien
| | - A. Stephen K. Hashmi
- Organisch-Chemisches Institut Universität Heidelberg Im Neuenheimer Feld 270 69120 Heidelberg Deutschland
- Chemistry Department Faculty of Science King Abdulaziz University Jeddah 21589 Saudi-Arabien
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33
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Hu C, Wang T, Rudolph M, Oeser T, Asiri AM, Hashmi ASK. Gold(I)-Catalyzed Cycloisomerization of 3-Alkoxyl-1,6-diynes: A Facile Access to Bicyclo[2.2.1]hept-5-en-2-ones. Angew Chem Int Ed Engl 2020; 59:8522-8526. [PMID: 31972059 PMCID: PMC7318145 DOI: 10.1002/anie.201914284] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2019] [Revised: 01/22/2020] [Indexed: 12/26/2022]
Abstract
A novel gold‐catalyzed cycloisomerization of 1,6‐diynes was achieved, providing an atom‐economic approach to a diverse set of bicyclo[2.2.1]hept‐5‐en‐2‐ones in moderate to good yields. With unsymmetrical starting materials with two different internal alkynyl substituents, to some extent, the regioselectivity could be controlled by both electronic and steric factors. This unprecedented reactivity pattern may inspire new and unconventional strategies for the preparation of bridged ring systems.
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Affiliation(s)
- Chao Hu
- Organisch-Chemisches Institut, Heidelberg University, Im Neuenheimer Feld 270, 69120, Heidelberg, Germany
| | - Tao Wang
- Organisch-Chemisches Institut, Heidelberg University, Im Neuenheimer Feld 270, 69120, Heidelberg, Germany
| | - Matthias Rudolph
- Organisch-Chemisches Institut, Heidelberg University, Im Neuenheimer Feld 270, 69120, Heidelberg, Germany
| | - Thomas Oeser
- Organisch-Chemisches Institut, Heidelberg University, Im Neuenheimer Feld 270, 69120, Heidelberg, Germany
| | - Abdullah M Asiri
- Chemistry Department, Faculty of Science, King Abdulaziz University, Jeddah, 21589, Saudi Arabia
| | - A Stephen K Hashmi
- Organisch-Chemisches Institut, Heidelberg University, Im Neuenheimer Feld 270, 69120, Heidelberg, Germany.,Chemistry Department, Faculty of Science, King Abdulaziz University, Jeddah, 21589, Saudi Arabia
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34
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Hong FL, Chen YB, Ye SH, Zhu GY, Zhu XQ, Lu X, Liu RS, Ye LW. Copper-Catalyzed Asymmetric Reaction of Alkenyl Diynes with Styrenes by Formal [3 + 2] Cycloaddition via Cu-Containing All-Carbon 1,3-Dipoles: Access to Chiral Pyrrole-Fused Bridged [2.2.1] Skeletons. J Am Chem Soc 2020; 142:7618-7626. [PMID: 32237743 DOI: 10.1021/jacs.0c01918] [Citation(s) in RCA: 53] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
The generation of metal-containing 1,3-dipoles from metal carbenes represents a significant advance in 1,3-dipolar cycloaddition reactions. However, these transformations have so far been limited to reactions based on diazo compounds or triazoles as precursors. Herein, we disclose a copper-catalyzed enantioselective reaction of alkenyl N-propargyl ynamides with styrene derivatives by formal [3 + 2] cycloaddition via Cu-containing all-carbon 1,3-dipoles, which constitutes a novel way for the generation of metal-containing 1,3-dipoles via metal carbenes. This protocol allows the practical and atom-economical synthesis of valuable chiral pyrrole-fused bridged [2.2.1] skeletons in moderate to good yields (up to 90% yield) with excellent diastereoselectivities (dr > 50/1) and generally excellent enantioselectivities (up to >99% ee).
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Affiliation(s)
- Feng-Lin Hong
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Key Laboratory of Chemical Biology of Fujian Province, and College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, People's Republic of China
| | - Yang-Bo Chen
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Key Laboratory of Chemical Biology of Fujian Province, and College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, People's Republic of China
| | - Si-Han Ye
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Key Laboratory of Chemical Biology of Fujian Province, and College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, People's Republic of China
| | - Guang-Yu Zhu
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Key Laboratory of Chemical Biology of Fujian Province, and College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, People's Republic of China
| | - Xin-Qi Zhu
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Key Laboratory of Chemical Biology of Fujian Province, and College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, People's Republic of China
| | - Xin Lu
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Key Laboratory of Chemical Biology of Fujian Province, and College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, People's Republic of China
| | - Rai-Shung Liu
- Department of Chemistry, National Tsing-Hua University, Hsinchu, Taiwan 30013, Republic of China
| | - Long-Wu Ye
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Key Laboratory of Chemical Biology of Fujian Province, and College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, People's Republic of China.,State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, People's Republic of China
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35
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Chen X, Baratay CA, Mark ME, Xu X, Hong Chan PW. Gold and Brønsted Acid Catalyzed Spirocyclization of 2- and 3-Indolyl-Tethered 1,4-Enyne Acetates to Spiro[4,n]alkyl[b]indoles. Org Lett 2020; 22:2849-2853. [DOI: 10.1021/acs.orglett.0c00929] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Xiaoyu Chen
- School of Chemistry, Monash University, Clayton, Victoria 3800, Australia
| | | | | | - Xinfang Xu
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China
| | - Philip Wai Hong Chan
- School of Chemistry, Monash University, Clayton, Victoria 3800, Australia
- Department of Chemistry, University of Warwick, Coventry, CV4 7AL, United Kingdom
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36
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Affiliation(s)
- Juzeng An
- Dipartimento di Chimica “G. Ciamician” Alma Mater Studiorum via Selmi 2 Bologna Italy
| | - Marco Bandini
- Dipartimento di Chimica “G. Ciamician” Alma Mater Studiorum via Selmi 2 Bologna Italy
- Consorzio CINMPIS via Selmi 2 Bologna Italy
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37
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Wu WT, Ding L, Zhang L, You SL. Gold-Catalyzed Intramolecular Dearomatization Reactions of Indoles for the Synthesis of Spiroindolenines and Spiroindolines. Org Lett 2020; 22:1233-1238. [PMID: 31789039 DOI: 10.1021/acs.orglett.9b03988] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A gold-catalyzed dearomatization reaction of indole derivatives was realized in the presence of JohnPhosAuCl/AgOMs to afford a series of spiroindolenines in excellent yields (≤99%). In addition, when the Hantzsch ester was used as the hydrogen transfer reagent, various spiroindolines were obtained in a cascade fashion starting from readily available indole derivatives in modest to good yields (≤79%). Both reactions feature readily available substrates, mild conditions, and good functional group tolerance.
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Affiliation(s)
- Wen-Ting Wu
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis , Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences , 345 LinglingLu , Shanghai 200032 , China
| | - Lu Ding
- School of Physical Science and Technology , ShanghaiTech University , 100 Haike Road , Shanghai 201210 , China
| | - Liming Zhang
- Department of Chemistry & Biochemistry , University of California, Santa Barbara , Santa Barbara , California 93106 , United States
| | - Shu-Li You
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis , Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences , 345 LinglingLu , Shanghai 200032 , China.,School of Physical Science and Technology , ShanghaiTech University , 100 Haike Road , Shanghai 201210 , China
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38
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Yamada T, Park K, Tachikawa T, Fujii A, Rudolph M, Hashmi ASK, Sajiki H. Gold-Catalyzed Cyclization of 2-Alkynylaldehyde Cyclic Acetals via Hydride Shift for the Synthesis of Indenone Derivatives. Org Lett 2020; 22:1883-1888. [DOI: 10.1021/acs.orglett.0c00221] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Tsuyoshi Yamada
- Laboratory of Organic Chemistry, Gifu Pharmaceutical University, 1-25-4 Daigaku-nishi, Gifu 501-1196, Japan
| | - Kwihwan Park
- Laboratory of Organic Chemistry, Gifu Pharmaceutical University, 1-25-4 Daigaku-nishi, Gifu 501-1196, Japan
| | - Takumu Tachikawa
- Laboratory of Organic Chemistry, Gifu Pharmaceutical University, 1-25-4 Daigaku-nishi, Gifu 501-1196, Japan
| | - Akiko Fujii
- Laboratory of Organic Chemistry, Gifu Pharmaceutical University, 1-25-4 Daigaku-nishi, Gifu 501-1196, Japan
| | - Matthias Rudolph
- Organisch-Chemisches Institut, Heidelberg University, Im Neuenheimer Feld 270, 69120 Heidelberg, Germany
| | - A. Stephen K. Hashmi
- Organisch-Chemisches Institut, Heidelberg University, Im Neuenheimer Feld 270, 69120 Heidelberg, Germany
| | - Hironao Sajiki
- Laboratory of Organic Chemistry, Gifu Pharmaceutical University, 1-25-4 Daigaku-nishi, Gifu 501-1196, Japan
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39
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Ma R, Gung BW. Transition states of the gold-catalyzed transannular [4+3] cycloaddition reactions: A computational study. Tetrahedron 2020. [DOI: 10.1016/j.tet.2019.130840] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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40
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Milcendeau P, Sabat N, Ferry A, Guinchard X. Gold-catalyzed enantioselective functionalization of indoles. Org Biomol Chem 2020; 18:6006-6017. [DOI: 10.1039/d0ob01245a] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
This review documents the potential of enantioselective gold catalysis for the functionalization of indoles.
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Affiliation(s)
- Pierre Milcendeau
- Université Paris-Saclay
- CNRS
- Institut de Chimie des Substances Naturelles
- UPR 2301
- Gif-sur-Yvette
| | - Nazarii Sabat
- Université Paris-Saclay
- CNRS
- Institut de Chimie des Substances Naturelles
- UPR 2301
- Gif-sur-Yvette
| | | | - Xavier Guinchard
- Université Paris-Saclay
- CNRS
- Institut de Chimie des Substances Naturelles
- UPR 2301
- Gif-sur-Yvette
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41
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Chen X, Holm AT, Chan PWH. Gold Catalysed 1,4-Enyne Acetate Strategy for the Synthesis of 1H-Indenes and Partially Hydrogenated Methanonaphtho[1,2-c]furan-1,3(4H)-diones. Aust J Chem 2020. [DOI: 10.1071/ch20175] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
A synthetic method to prepare 1H-indenes and partially hydrogenated methanonaphtho[1,2-c]furan-1,3(4H)-diones from gold(i)-catalysed 1,4-enyne acetate cycloisomerisation and oxidation or Diels–Alder reaction with maleic anhydride is described. The proposed mechanism involves Rautenstrauch rearrangement of the 1,4-enyne motif to give an insitu formed 1,3-cyclopentadiene intermediate. This is followed by 6-endo-dig cyclisation of the cyclic adduct and oxidation to give the aromatic carbocycle or Diels–Alder reaction with maleic anhydride to afford the bridged furan product.
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42
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Siah HSM, Fiksdahl A. Preparation and Catalytic Activity of Novel σ,π-Dual Gold(I) Acetylide Complexes. European J Org Chem 2019. [DOI: 10.1002/ejoc.201901623] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Huey-San Melanie Siah
- Department of Chemistry; Norwegian University of Science and Technology; Hoegskoleveien 7491 Trondheim Norway
| | - Anne Fiksdahl
- Department of Chemistry; Norwegian University of Science and Technology; Hoegskoleveien 7491 Trondheim Norway
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43
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Cheng Y, Zhao Q, Zhang X, You S. Asymmetric Dearomatization of Indole Derivatives with N‐Hydroxycarbamates Enabled by Photoredox Catalysis. Angew Chem Int Ed Engl 2019; 58:18069-18074. [DOI: 10.1002/anie.201911144] [Citation(s) in RCA: 59] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2019] [Revised: 09/26/2019] [Indexed: 12/15/2022]
Affiliation(s)
- Yuan‐Zheng Cheng
- State Key Laboratory of Organometallic ChemistryShanghai Institute of Organic ChemistryChinese Academy of Sciences 345 Lingling Lu Shanghai 200032 China
| | - Qing‐Ru Zhao
- State Key Laboratory of Organometallic ChemistryShanghai Institute of Organic ChemistryChinese Academy of Sciences 345 Lingling Lu Shanghai 200032 China
- School of Physical Science and TechnologyShanghaiTech University 100 Haike Road Shanghai 201210 China
| | - Xiao Zhang
- State Key Laboratory of Organometallic ChemistryShanghai Institute of Organic ChemistryChinese Academy of Sciences 345 Lingling Lu Shanghai 200032 China
| | - Shu‐Li You
- State Key Laboratory of Organometallic ChemistryShanghai Institute of Organic ChemistryChinese Academy of Sciences 345 Lingling Lu Shanghai 200032 China
- School of Physical Science and TechnologyShanghaiTech University 100 Haike Road Shanghai 201210 China
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44
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Cheng Y, Zhao Q, Zhang X, You S. Asymmetric Dearomatization of Indole Derivatives with N‐Hydroxycarbamates Enabled by Photoredox Catalysis. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201911144] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Yuan‐Zheng Cheng
- State Key Laboratory of Organometallic ChemistryShanghai Institute of Organic ChemistryChinese Academy of Sciences 345 Lingling Lu Shanghai 200032 China
| | - Qing‐Ru Zhao
- State Key Laboratory of Organometallic ChemistryShanghai Institute of Organic ChemistryChinese Academy of Sciences 345 Lingling Lu Shanghai 200032 China
- School of Physical Science and TechnologyShanghaiTech University 100 Haike Road Shanghai 201210 China
| | - Xiao Zhang
- State Key Laboratory of Organometallic ChemistryShanghai Institute of Organic ChemistryChinese Academy of Sciences 345 Lingling Lu Shanghai 200032 China
| | - Shu‐Li You
- State Key Laboratory of Organometallic ChemistryShanghai Institute of Organic ChemistryChinese Academy of Sciences 345 Lingling Lu Shanghai 200032 China
- School of Physical Science and TechnologyShanghaiTech University 100 Haike Road Shanghai 201210 China
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45
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Murai M, Takai K. Rhenium-Catalyzed Cyclization via 1,2-Iodine and 1,5-Hydrogen Migration for the Synthesis of 2-Iodo-1H-indenes. Org Lett 2019; 21:6756-6760. [DOI: 10.1021/acs.orglett.9b02380] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- Masahito Murai
- Division of Applied Chemistry, Graduate School of Natural Science and Technology, Okayama University, 3-1-1 Tsushimanaka, Kita-ku, Okayama 700-8530, Japan
- Department of Chemistry, Graduate School of Science, Nagoya University, Furo, Chikusa, Nagoya 464-8602, Japan
| | - Kazuhiko Takai
- Division of Applied Chemistry, Graduate School of Natural Science and Technology, Okayama University, 3-1-1 Tsushimanaka, Kita-ku, Okayama 700-8530, Japan
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46
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Mao J, Zhang H, Ding XF, Luo X, Deng WP. Synergistic Catalysis for Asymmetric [3 + 2] Cycloadditions of 2-Indolylmethanols with α,β-Unsaturated Aldehydes. J Org Chem 2019; 84:11186-11194. [DOI: 10.1021/acs.joc.9b01234] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Jia Mao
- 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
| | - Hao 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
| | - Xiang-Feng Ding
- 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
| | - Xiaoyan Luo
- 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
| | - 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
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47
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Brandstätter M, Huwyler N, Carreira EM. Gold(i)-catalyzed stereoselective cyclization of 1,3-enyne aldehydes by a 1,3-acyloxy migration/Nazarov cyclization/aldol addition cascade. Chem Sci 2019; 10:8219-8223. [PMID: 31857887 PMCID: PMC6839590 DOI: 10.1039/c9sc02828e] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2019] [Accepted: 07/22/2019] [Indexed: 01/10/2023] Open
Abstract
Stereoselective synthesis of bicyclo[3.3.0]octenones from chiral 1,3-enyne aldehydes bearing propargylic acetates is described. The method is based on a Au(i)-catalyzed domino sequence with concomitant transfer of chirality involving 1,3-acyloxy migration followed by Nazarov cyclization and an unprecedented aldol addition. The method furnishes densely functionalized bicyclic structures in high yields, with up to 97% ee and good diastereoselectivity.
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Affiliation(s)
- Marco Brandstätter
- Laboratorium für Organische Chemie, HCI H335 , Eidgenössische Technische Hochschule Zürich , Vladimir-Prelog-Weg 3 , 8093 Zürich , Switzerland .
| | - Nikolas Huwyler
- Laboratorium für Organische Chemie, HCI H335 , Eidgenössische Technische Hochschule Zürich , Vladimir-Prelog-Weg 3 , 8093 Zürich , Switzerland .
| | - Erick M Carreira
- Laboratorium für Organische Chemie, HCI H335 , Eidgenössische Technische Hochschule Zürich , Vladimir-Prelog-Weg 3 , 8093 Zürich , Switzerland .
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48
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Sadhukhan S, Baire B. Formal Halo‐Meyer–Schuster Rearrangement of Propargylic Acetates through a Novel Intermediate and an Unexampled Mechanistic Pathway. Chemistry 2019; 25:9816-9820. [DOI: 10.1002/chem.201901856] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2019] [Revised: 05/29/2019] [Indexed: 01/02/2023]
Affiliation(s)
- Santu Sadhukhan
- Department of ChemistryIndian Institute of Technology Madras Chennai Tamilnadu 600036 India
| | - Beeraiah Baire
- Department of ChemistryIndian Institute of Technology Madras Chennai Tamilnadu 600036 India
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49
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Kim N, Widenhoefer RA. Ionization of gold (γ-methoxy)vinyl complexes generates reactive gold vinyl carbene complexes. Chem Sci 2019; 10:6149-6156. [PMID: 31360421 PMCID: PMC6585879 DOI: 10.1039/c9sc01574d] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2019] [Accepted: 05/08/2019] [Indexed: 11/21/2022] Open
Abstract
Cationic gold vinyl carbene/allylic cation complexes of the form (E)-[(L)AuC(H)C(H)CAr2]+ OTf- {L = IPr, Ar = Ph [(E)-5a], L = IPr, Ar = 4-C6H4OMe [(E)-5b], L = P(t-Bu)2 o-biphenyl, Ar = 4-C6H4OMe [(E)-5c]} were generated in solution via Lewis acid-mediated ionization of the corresponding gold (γ-methoxy)vinyl complexes (E)-(L)AuC(H)C(H)C(OMe)Ar2 at or below -95 °C. Complexes (E)-5b and (E)-5c were fully characterized in solution employing multinuclear NMR spectroscopy, which established the predominant contribution of the aurated allylic cation resonance structure and the significant distribution of positive charge into the γ-anisyl rings. Complex (E)-5b reacted rapidly at -95 °C with neutral two-electron, hydride, and oxygen atom donors exclusively at the C1 position of the vinyl carbene moiety and with p-methoxystyrene to form the corresponding vinylcyclopropane. In the absence of nucleophile (E)-5a decomposed predominantly via intermolecular carbene dimerization whereas formation of 1-aryl-5-methoxy indene upon ionization of (Z)-(IPr)AuC(H)C(H)C(OMe)(4-C6H4OMe)2 [(Z)-6b] implicated an intramolecular Friedel-Crafts or electrocyclic Nazarov pathway for the decomposition of the unobserved vinyl carbene complex (Z)-[(IPr)AuC(H)C(H)C(4-C6H4OMe)2]+ OTf- [(Z)-5b].
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Affiliation(s)
- Nana Kim
- French Family Science Center , Duke University , Durham , North Carolina , USA .
| | - Ross A Widenhoefer
- French Family Science Center , Duke University , Durham , North Carolina , USA .
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50
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Capretz Agy A, Rodrigues MT, Zeoly LA, Simoni DA, Coelho F. Palladium-Mediated Oxidative Annulation of δ-Indolyl-α,β-Unsaturated Compounds toward the Synthesis of Cyclopenta[b]indoles and Heterogeneous Hydrogenation To Access Fused Indolines. J Org Chem 2019; 84:5564-5581. [DOI: 10.1021/acs.joc.9b00505] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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