1
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Cheng H, Liu R, Fang S, Li Z, Zhang D, Zhang X, Chen W, Chen H, Kang L, Wang J, Xu Y, Song S, Shao L. Synthesis of easily-modified and useful dibenzo-[ b,d]azepines by palladium(II)-catalyzed cyclization/addition with a green solvent. Chem Commun (Camb) 2024; 60:3587-3590. [PMID: 38470314 DOI: 10.1039/d3cc06321f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/13/2024]
Abstract
A novel strategy in which palladium(II)-catalyzed tandem cyclization is used to obtain N-heterocyclic architectures containing a seven-membered ring has been developed and used to synthesize a series of derivatives. The reaction uses an eco-friendly mixed solvent (water : EtOH = 2 : 1) instead of DMSO and maintains a high yield (91%). Its potential application value and reaction mechanism have also been explored.
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Affiliation(s)
- Hua Cheng
- School of Pharmacy, Fudan University, 826 Zhangheng Road, Zhangjiang Hi-tech Park, Pudong, Shanghai, 201203, China.
- China Department of Nuclear Medicine, Fudan University Shanghai Cancer Center, No. 270, Dong'an Road, Xuhui District, Shanghai 200032, China.
- Massachusetts General Hospital, Harvard Medical School, Boston, MA 02129, USA.
| | - Rongqi Liu
- School of Pharmacy, Fudan University, 826 Zhangheng Road, Zhangjiang Hi-tech Park, Pudong, Shanghai, 201203, China.
| | - Shengyang Fang
- School of Pharmacy, Fudan University, 826 Zhangheng Road, Zhangjiang Hi-tech Park, Pudong, Shanghai, 201203, China.
| | - Zixiang Li
- School of Pharmacy, Fudan University, 826 Zhangheng Road, Zhangjiang Hi-tech Park, Pudong, Shanghai, 201203, China.
| | - Denggao Zhang
- School of Pharmacy, Fudan University, 826 Zhangheng Road, Zhangjiang Hi-tech Park, Pudong, Shanghai, 201203, China.
| | - Xi Zhang
- Massachusetts General Hospital, Harvard Medical School, Boston, MA 02129, USA.
| | - Wenfei Chen
- School of Medicine, Shanghai University, Shanghai 200444, China.
| | - Huixin Chen
- School of Medicine, Shanghai University, Shanghai 200444, China.
| | - Leyi Kang
- Massachusetts General Hospital, Harvard Medical School, Boston, MA 02129, USA.
| | - Juan Wang
- School of Medicine, Shanghai University, Shanghai 200444, China.
| | - Yulong Xu
- Massachusetts General Hospital, Harvard Medical School, Boston, MA 02129, USA.
| | - Shaoli Song
- China Department of Nuclear Medicine, Fudan University Shanghai Cancer Center, No. 270, Dong'an Road, Xuhui District, Shanghai 200032, China.
| | - Liming Shao
- School of Pharmacy, Fudan University, 826 Zhangheng Road, Zhangjiang Hi-tech Park, Pudong, Shanghai, 201203, China.
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2
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Wang Y, Cui L, Wang Y, Li F, Li Y, Meng Q. Chiral TPE Foldamers in Macrocycles: Aggregation Enhanced Emission and Circularly Polarized Luminescence. Chemistry 2023; 29:e202302373. [PMID: 37648675 DOI: 10.1002/chem.202302373] [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: 07/25/2023] [Revised: 08/30/2023] [Accepted: 08/30/2023] [Indexed: 09/01/2023]
Abstract
Chiral macrocycles with circularly polarized luminescence (CPL) have attracted increasing attention due to the rigid structure, symmetrical chiral geometry and large luminescence dissymmetry factors (glum ). However, most chiral macrocycles are more emissive in solutions but have weakened fluorescence quantum yields (ΦF ) in aggregates, limiting their further application. In this paper, chiral macrocycle R/S-PhTPE was synthesized by combining chiral macrocycle architectonics with Z-o-phenyltetraphenylethylene (PhTPE) foldamer. Enhanced solution state emission and characteristic aggregation enhanced emission (AEE) effect can be observed for R/S-PhTPE due to the folded PhTPE conformation. Macrocycle immobilization and folded conformation endow PhTPE moiety with stable helical conformation. Most importantly, R/S-PhTPE exhibits opposite CPL signals compared with common chiral TPEs, demonstrating the evident impact of folded conformation. This work reports the first and deep insights into the chiroptical properties of chiral PhTPE foldamers, and will provide a new strategy to tune ΦF and CPL signals of AIE active chiral macrocycles.
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Affiliation(s)
- Yuxiang Wang
- Jiangsu Province Key Laboratory of Fine Petrochemical Engineering, School of Petrochemical Engineering, Changzhou University, No. 21, Gehu Rd., Wujin Dist., Changzhou, 213164, China
| | - Liwen Cui
- Jiangsu Province Key Laboratory of Fine Petrochemical Engineering, School of Petrochemical Engineering, Changzhou University, No. 21, Gehu Rd., Wujin Dist., Changzhou, 213164, China
| | - Yiran Wang
- School of Chemistry and Chemical Engineering, Linyi University, North Industrial Ave., Lanshan Dist., Linyi, 276000, China
| | - Fei Li
- College of Engineering, China Pharmaceutical University, No. 639, Longmian Ave., Jiangning Dist., Nanjing, 211109, China
| | - Yunzhi Li
- School of Chemistry and Chemical Engineering, Linyi University, North Industrial Ave., Lanshan Dist., Linyi, 276000, China
| | - Qi Meng
- Jiangsu Province Key Laboratory of Fine Petrochemical Engineering, School of Petrochemical Engineering, Changzhou University, No. 21, Gehu Rd., Wujin Dist., Changzhou, 213164, China
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3
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Dhara HN, Rakshit A, Alam T, Patel BK. Metal-catalyzed reactions of organic nitriles and boronic acids to access diverse functionality. Org Biomol Chem 2022; 20:4243-4277. [PMID: 35552581 DOI: 10.1039/d2ob00288d] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
The nitrile or cyano (-CN) group is one of the most appreciated and effective functional groups in organic synthesis, having a polar unsaturated C-N triple bond. Despite sufficient stability and being intrinsically inert, the nitrile group can be easily transformed into many other functional groups, such as amines, carboxylic acids, ketones, etc. which makes it a vital group in organic synthesis. On the other hand, despite several boronic acids having a low level of genotoxicity, they have found wide applicability in the field of organic synthesis, especially in transition metal-catalyzed cross-coupling reactions. Recently, transition-metal-catalyzed cascade additions or addition/cyclization processes of boronic acids to the nitrile group open up exciting and useful strategies to prepare a variety of functional molecules through the formation of C-C, C-N and CO bonds. Boronic acids can be added to the cyano functionality through catalytic carbometallation or through a radical cascade process to provide newer pathways for the rapid construction of various important acyclic ketones or amides, carbamidines, carbocycles and N,O-heterocycles. The present review focuses on various transition-metal-catalyzed additions of boronic acids via carbometallation or radical cascade processes using the cyano group as an acceptor.
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Affiliation(s)
- Hirendra Nath Dhara
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati 781039, India.
| | - Amitava Rakshit
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati 781039, India.
| | - Tipu Alam
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati 781039, India.
| | - Bhisma K Patel
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati 781039, India.
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4
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Liu X, Liu D, Muschin T, Bao A, Bai C, Bao YS. Supported Palladium Nanoparticles Catalyzed Intermolecular Carbopalladation of Nitriles and Organoboron Compounds. Front Chem 2022; 10:855850. [PMID: 35615308 PMCID: PMC9124771 DOI: 10.3389/fchem.2022.855850] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2022] [Accepted: 04/05/2022] [Indexed: 11/13/2022] Open
Abstract
The first heterogeneous catalyzed example for the direct synthesis of aromatic ketones via intermolecular carbopalladation of aliphatic nitriles and organoboron compounds was developed. This mild method proceeds with a supported palladium nanoparticles catalyst that could be reused and recycled five times. The fresh and used catalysts were characterized by XPS and TEM. The XPS analysis indicated that Pd0 was the active species for the reaction. This methodology provides a mild and cost-effective strategy for the efficient synthesis of ketones.
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5
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Bai C, Guo H, Liu X, Liu D, Sun Z, Bao A, Baiyin M, Muschin T, Bao YS. [3 + 2 + 1] Pyridine Skeleton Synthesis Using Acetonitrile as C4N1 Units and Solvent. J Org Chem 2021; 86:12664-12675. [PMID: 34463102 DOI: 10.1021/acs.joc.1c01194] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
The first [3 + 2 + 1] methodology for pyridine skeleton synthesis via cascade carbopalladation/cyclization of acetonitrile, arylboronic acids, and aldehydes was developed. This reaction proceeds via six step tandem reaction sequences involving the carbopalladation reaction of acetonitrile, a nucleophilic addition, a condensation, an intramolecular Michael addition, cyclization, and aromatization. Delightfully, both palladium acetate and supported palladium nanoparticles catalyzed this reaction with similar catalytic performance. The characterization results of the fresh and used supported palladium nanoparticle catalysts indicated that the reaction might be performed via a Pd(0)/Pd(II) catalytic cycle that began with Pd(0). Furthermore, the products showed good fluorescence characteristics. The green homogeneous/heterogenous catalytic methodologies pave a new way for constructing the pyridine skeleton.
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Affiliation(s)
- Chaolumen Bai
- College of Chemistry and Environmental Science, Inner Mongolia Key Laboratory of Green Catalysis, Inner Mongolia Normal University, Hohhot 010022, China
| | - Huifang Guo
- College of Chemistry and Environmental Science, Inner Mongolia Key Laboratory of Green Catalysis, Inner Mongolia Normal University, Hohhot 010022, China
| | - Xin Liu
- College of Chemistry and Environmental Science, Inner Mongolia Key Laboratory of Green Catalysis, Inner Mongolia Normal University, Hohhot 010022, China
| | - Dan Liu
- College of Chemistry and Environmental Science, Inner Mongolia Key Laboratory of Green Catalysis, Inner Mongolia Normal University, Hohhot 010022, China
| | - Zhaorigetu Sun
- College of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot 010020, China
| | - Agula Bao
- College of Chemistry and Environmental Science, Inner Mongolia Key Laboratory of Green Catalysis, Inner Mongolia Normal University, Hohhot 010022, China
| | - Menghe Baiyin
- College of Chemistry and Environmental Science, Inner Mongolia Key Laboratory of Green Catalysis, Inner Mongolia Normal University, Hohhot 010022, China
| | - Tegshi Muschin
- College of Chemistry and Environmental Science, Inner Mongolia Key Laboratory of Green Catalysis, Inner Mongolia Normal University, Hohhot 010022, China
| | - Yong-Sheng Bao
- College of Chemistry and Environmental Science, Inner Mongolia Key Laboratory of Green Catalysis, Inner Mongolia Normal University, Hohhot 010022, China
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6
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Gold-catalyzed ketene dual functionalization and mechanistic insights: divergent synthesis of indenes and benzo[d]oxepines. Sci China Chem 2021. [DOI: 10.1007/s11426-020-9954-6] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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7
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Otake C, Namba T, Tabata H, Makino K, Hirano K, Oshitari T, Natsugari H, Kusumi T, Takahashi H. Conformational Preference of 2'-Fluoro-Substituted Acetophenone Derivatives Revealed by Through-Space 1H- 19F and 13C- 19F Spin-Spin Couplings. J Org Chem 2021; 86:4638-4645. [PMID: 33645981 PMCID: PMC8154564 DOI: 10.1021/acs.joc.1c00051] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022]
Abstract
![]()
The conformational properties of
2′-fluoro-substituted acetophenone
derivatives were elucidated based on Hα–F
and Cα–F through-space spin–spin couplings
(TS-couplings), which occur between two atoms constrained at a distance
smaller than the sum of their van der Waals radii. This study revealed
that 2′-fluoro-substituted acetophenone derivatives in solutions
form exclusively s-trans conformers
by analyzing their NMR spectra focused on the TS-couplings. The magnitudes
of the coupling constants 5J (Hα, F) and 4J (Cα, F)
correlate linearly with the value of the dielectric constant of the
solvents. Furthermore, s-trans conformations
of the two derivatives were confirmed by X-ray crystallographic analysis.
These conformational preferences were consistent with the DFT calculations.
The s-cis conformer, in which fluorine
and oxygen atoms lie in a syn-periplanar mode, may
be subject to strong repulsion between the two polar atoms and become
unstable. The s-trans preference
of the 2′-fluoro-substituted acetophenone derivatives may be
utilized in drug design.
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Affiliation(s)
- Chinatsu Otake
- Faculty of Pharmaceutical Sciences, Tokyo University of Science, 2641Yamazaki, Noda-shi, Chiba 278-8510, Japan
| | - Takuya Namba
- Faculty of Pharmaceutical Sciences, Tokyo University of Science, 2641Yamazaki, Noda-shi, Chiba 278-8510, Japan
| | - Hidetsugu Tabata
- Faculty of Pharma Sciences, Teikyo University, 2-11-1 Kaga, Itabashi-ku, Tokyo 173-8605, Japan
| | - Kosho Makino
- Faculty of Pharmaceutical Sciences, Tokyo University of Science, 2641Yamazaki, Noda-shi, Chiba 278-8510, Japan
| | - Kiriko Hirano
- Bruker Japan K.K., 3-9 Moriya, Kanagawa-ku, Yokohama, Kanagawa 221-0022, Japan
| | - Tetsuta Oshitari
- Faculty of Pharma Sciences, Teikyo University, 2-11-1 Kaga, Itabashi-ku, Tokyo 173-8605, Japan
| | - Hideaki Natsugari
- Graduate School of Pharmaceutical Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Takenori Kusumi
- Department of Chemistry, Tokyo Institute of Technology, Meguro-ku, Tokyo 152-8551, Japan
| | - Hideyo Takahashi
- Faculty of Pharmaceutical Sciences, Tokyo University of Science, 2641Yamazaki, Noda-shi, Chiba 278-8510, Japan
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8
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Reddy RJ, Kumari AH. Synthesis and applications of sodium sulfinates (RSO 2Na): a powerful building block for the synthesis of organosulfur compounds. RSC Adv 2021; 11:9130-9221. [PMID: 35423435 PMCID: PMC8695481 DOI: 10.1039/d0ra09759d] [Citation(s) in RCA: 74] [Impact Index Per Article: 24.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2020] [Accepted: 01/31/2021] [Indexed: 12/15/2022] Open
Abstract
This review highlights the preparation of sodium sulfinates (RSO2Na) and their multifaceted synthetic applications. Substantial progress has been made over the last decade in the utilization of sodium sulfinates emerging as sulfonylating, sulfenylating or sulfinylating reagents, depending on reaction conditions. Sodium sulfinates act as versatile building blocks for preparing many valuable organosulfur compounds through S-S, N-S, and C-S bond-forming reactions. Remarkable advancement has been made in synthesizing thiosulfonates, sulfonamides, sulfides, and sulfones, including vinyl sulfones, allyl sulfones, and β-keto sulfones. The significant achievement of developing sulfonyl radical-triggered ring-closing sulfonylation and multicomponent reactions is also thoroughly discussed. Of note, the most promising site-selective C-H sulfonylation, photoredox catalytic transformations and electrochemical synthesis of sodium sulfinates are also demonstrated. Holistically, this review provides a unique and comprehensive overview of sodium sulfinates, which summarizes 355 core references up to March 2020. The chemistry of sodium sulfinate salts is divided into several sections based on the classes of sulfur-containing compounds with some critical mechanistic insights that are also disclosed.
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Affiliation(s)
- Raju Jannapu Reddy
- Department of Chemistry, University College of Science, Osmania University Hyderabad 500 007 India
| | - Arram Haritha Kumari
- Department of Chemistry, University College of Science, Osmania University Hyderabad 500 007 India
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9
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Chiummiento L, D’Orsi R, Funicello M, Lupattelli P. Last Decade of Unconventional Methodologies for the Synthesis of Substituted Benzofurans. Molecules 2020; 25:E2327. [PMID: 32429435 PMCID: PMC7288127 DOI: 10.3390/molecules25102327] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2020] [Revised: 05/13/2020] [Accepted: 05/13/2020] [Indexed: 12/13/2022] Open
Abstract
This review describes the progress of the last decade on the synthesis of substituted benzofurans, which are useful scaffolds for the synthesis of numerous natural products and pharmaceuticals. In particular, new intramolecular and intermolecular C-C and/or C-O bond-forming processes, with transition-metal catalysis or metal-free are summarized. (1) Introduction. (2) Ring generation via intramolecular cyclization. (2.1) C7a-O bond formation: (route a). (2.2) O-C2 bond formation: (route b). (2.3) C2-C3 bond formation: (route c). (2.4) C3-C3a bond formation: (route d). (3) Ring generation via intermolecular cyclization. (3.1) C7a-O and C3-C3a bond formation (route a + d). (3.2) O-C2 and C2-C3 bond formation: (route b + c). (3.3) O-C2 and C3-C3a bond formation: (route b + d). (4) Benzannulation. (5) Conclusion.
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Affiliation(s)
- Lucia Chiummiento
- Department of Science, Via dell’Ateneo Lucano, 10, 85100 Potenza, Italy; (R.D.); (M.F.); (P.L.)
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10
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Matsuda Y, Tsuji Y, Fujihara T. Cu-Catalyzed three-component coupling reactions using nitriles, 1,3-dienes and silylboranes. Chem Commun (Camb) 2020; 56:4648-4651. [PMID: 32270164 DOI: 10.1039/d0cc01803a] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This paper reports novel Cu-catalyzed three-component coupling reactions using nitriles, 1,3-dienes and silylboranes. The desired reactions proceed at room temperature and yield β,γ-unsaturated ketones with a (dimethylphenylsilyl)methyl moiety at the α-position. Diverse nitriles participate in the reaction and the corresponding products were obtained in good to high yields with high regioselectivity.
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Affiliation(s)
- Yuki Matsuda
- Department of Energy and Hydrocarbon Chemistry, Graduate School of Engineering, Kyoto University, Kyoto 615-8510, Japan.
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11
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Dai L, Yu S, Xiong W, Chen Z, Xu T, Shao Y, Chen J. Divergent Palladium‐Catalyzed Tandem Reaction of Cyanomethyl Benzoates with Arylboronic Acids: Synthesis of Oxazoles and Isocoumarins. Adv Synth Catal 2020. [DOI: 10.1002/adsc.202000125] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Ling Dai
- College of Chemistry and Materials EngineeringWenzhou University Wenzhou 325035 People's Republic of China
| | - Shuling Yu
- College of Chemistry and Materials EngineeringWenzhou University Wenzhou 325035 People's Republic of China
| | - Wenzhang Xiong
- College of Chemistry and Materials EngineeringWenzhou University Wenzhou 325035 People's Republic of China
| | - Zhongyan Chen
- College of Chemistry and Materials EngineeringWenzhou University Wenzhou 325035 People's Republic of China
| | - Tong Xu
- College of Chemistry and Materials EngineeringWenzhou University Wenzhou 325035 People's Republic of China
| | - Yinlin Shao
- College of Chemistry and Materials EngineeringWenzhou University Wenzhou 325035 People's Republic of China
| | - Jiuxi Chen
- College of Chemistry and Materials EngineeringWenzhou University Wenzhou 325035 People's Republic of China
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12
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Dhandabani GK, Shih CL, Wang JJ. Acid-Promoted Intramolecular Decarbonylative Coupling Reactions of Unstrained Ketones: A Modular Approach to Synthesis of Acridines and Diaryl Ketones. Org Lett 2020; 22:1955-1960. [DOI: 10.1021/acs.orglett.0c00304] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Ganesh Kumar Dhandabani
- Department of Medicinal and Applied Chemistry, Kaohsiung Medical University, No. 100, Shih-Chuan first Rd, Sanmin District, Kaohsiung City, 807, Taiwan
| | - Chia-Ling Shih
- Department of Medicinal and Applied Chemistry, Kaohsiung Medical University, No. 100, Shih-Chuan first Rd, Sanmin District, Kaohsiung City, 807, Taiwan
| | - Jeh-Jeng Wang
- Department of Medicinal and Applied Chemistry, Kaohsiung Medical University, No. 100, Shih-Chuan first Rd, Sanmin District, Kaohsiung City, 807, Taiwan
- Department of Medical Research, Kaohsiung Medical University Hospital, No.100 Tzyou first Rd, Sanmin District, Kaohsiung City, 807, Taiwan
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13
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de Gombert A, McKay AI, Davis CJ, Wheelhouse KM, Willis MC. Mechanistic Studies of the Palladium-Catalyzed Desulfinative Cross-Coupling of Aryl Bromides and (Hetero)Aryl Sulfinate Salts. J Am Chem Soc 2020; 142:3564-3576. [PMID: 32031375 PMCID: PMC7146858 DOI: 10.1021/jacs.9b13260] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2019] [Indexed: 12/18/2022]
Abstract
Pyridine and related heterocyclic sulfinates have recently emerged as effective nucleophilic coupling partners in palladium-catalyzed cross-coupling reactions with (hetero)aryl halides. These sulfinate reagents are straightforward to prepare, stable to storage and coupling reaction conditions, and deliver efficient reactions, thus offering many advantages, compared to the corresponding boron-derived reagents. Despite the success of these reactions, there are only scant details of the reaction mechanism. In this study, we use structural and kinetic analysis to investigate the mechanism of these important coupling reactions in detail. We compare a pyridine-2-sulfinate with a carbocyclic sulfinate and establish different catalyst resting states, and turnover limiting steps, for the two classes of reagent. For the carbocyclic sulfinate, the aryl bromide oxidative addition complex is the resting state intermediate, and transmetalation is turnover-limiting. In contrast, for the pyridine sulfinate, a chelated Pd(II) sulfinate complex formed post-transmetalation is the resting-state intermediate, and loss of SO2 from this complex is turnover-limiting. We also investigated the role of the basic additive potassium carbonate, the use of which is crucial for efficient reactions, and deduced a dual function in which carbonate is responsible for the removal of free sulfur dioxide from the reaction medium, and the potassium cation plays a role in accelerating transmetalation. In addition, we show that sulfinate homocoupling is responsible for converting Pd(OAc)2 to a catalytically active Pd(0) complex. Together, these studies shed light on the challenges that must be overcome to deliver improved, lower temperature versions of these synthetically important processes.
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Affiliation(s)
- Antoine de Gombert
- Department
of Chemistry, Chemistry Research Laboratories, University of Oxford, Mansfield Road, Oxford OX1 4TA, United Kingdom
| | - Alasdair I. McKay
- Department
of Chemistry, Chemistry Research Laboratories, University of Oxford, Mansfield Road, Oxford OX1 4TA, United Kingdom
- School
of Chemistry, University of Melbourne, Parkville, VIC 3010, Australia
| | - Christopher J. Davis
- Vertex
Pharmaceuticals (Europe), Ltd., 86-88 Jubilee Avenue, Abingdon, Oxfordshire OX14 4RW, United Kingdom
| | - Katherine M. Wheelhouse
- Chemical
Development, GSK Medicines Research Centre, Gunnels Wood Road, Stevenage, Hertfordshire SG1 2NY, United Kingdom
| | - Michael C. Willis
- Department
of Chemistry, Chemistry Research Laboratories, University of Oxford, Mansfield Road, Oxford OX1 4TA, United Kingdom
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14
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Gong J, Hu K, Shao Y, Li R, Zhang Y, Hu M, Chen J. Tandem addition/cyclization for synthesis of 2-aroyl benzofurans and 2-aroyl indoles by carbopalladation of nitriles. Org Biomol Chem 2020; 18:488-494. [DOI: 10.1039/c9ob02408e] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Pd-Catalyzed tandem reaction of 2-(2-acylphenoxy)acetonitriles or 2-((2-benzoylphenyl)amino)acetonitrile with arylboronic acids for the synthesis of 2-aroyl benzofurans and 2-aroyl indoles.
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Affiliation(s)
- Julin Gong
- College of Chemistry & Materials Engineering
- Wenzhou University
- Wenzhou 325035
- P. R. China
| | - Kun Hu
- College of Chemistry & Materials Engineering
- Wenzhou University
- Wenzhou 325035
- P. R. China
| | - Yinlin Shao
- College of Chemistry & Materials Engineering
- Wenzhou University
- Wenzhou 325035
- P. R. China
| | - Renhao Li
- School of Pharmaceutical Sciences
- Wenzhou Medical University
- Wenzhou
- P. R. China
| | - Yetong Zhang
- College of Chemistry & Materials Engineering
- Wenzhou University
- Wenzhou 325035
- P. R. China
| | - Maolin Hu
- College of Chemistry & Materials Engineering
- Wenzhou University
- Wenzhou 325035
- P. R. China
| | - Jiuxi Chen
- College of Chemistry & Materials Engineering
- Wenzhou University
- Wenzhou 325035
- P. R. China
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15
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Hu M, He JN, Liu Y, Dong T, Chen M, Yan C, Ye Y, Peng B. [3,3]-Sigmatropic Rearrangement of Aryl Fluoroalkyl Sulfoxides with Alkyl Nitriles. European J Org Chem 2019. [DOI: 10.1002/ejoc.201901577] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Mengjie Hu
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials; Zhejiang Normal University; 321004 Jinhua China
| | - Jia-Ni He
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials; Zhejiang Normal University; 321004 Jinhua China
| | - Yanping Liu
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials; Zhejiang Normal University; 321004 Jinhua China
| | - Taotao Dong
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials; Zhejiang Normal University; 321004 Jinhua China
| | - Mengyuan Chen
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials; Zhejiang Normal University; 321004 Jinhua China
| | - Chao Yan
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials; Zhejiang Normal University; 321004 Jinhua China
| | - Yulu Ye
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials; Zhejiang Normal University; 321004 Jinhua China
| | - Bo Peng
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials; Zhejiang Normal University; 321004 Jinhua China
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16
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Zhen Q, Chen L, Qi L, Hu K, Shao Y, Li R, Chen J. Nickel‐Catalyzed Tandem Reaction of Functionalized Arylacetonitriles with Arylboronic Acids in 2‐MeTHF: Eco‐Friendly Synthesis of Aminoisoquinolines and Isoquinolones. Chem Asian J 2019; 15:106-111. [DOI: 10.1002/asia.201901442] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2019] [Revised: 11/11/2019] [Indexed: 01/13/2023]
Affiliation(s)
- Qianqian Zhen
- College of Chemistry & Materials EngineeringWenzhou University Wenzhou 325035 China
| | - Lepeng Chen
- College of Chemistry & Materials EngineeringWenzhou University Wenzhou 325035 China
| | - Linjun Qi
- College of Chemistry & Materials EngineeringWenzhou University Wenzhou 325035 China
| | - Kun Hu
- College of Chemistry & Materials EngineeringWenzhou University Wenzhou 325035 China
| | - Yinlin Shao
- College of Chemistry & Materials EngineeringWenzhou University Wenzhou 325035 China
| | - Renhao Li
- School of Pharmaceutical SciencesWenzhou Medical University Wenzhou 325035 China
| | - Jiuxi Chen
- College of Chemistry & Materials EngineeringWenzhou University Wenzhou 325035 China
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17
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Xu T, Shao Y, Dai L, Yu S, Cheng T, Chen J. Pd-Catalyzed Tandem Reaction of 2-Aminostyryl Nitriles with Arylboronic Acids: Synthesis of 2-Arylquinolines. J Org Chem 2019; 84:13604-13614. [DOI: 10.1021/acs.joc.9b01875] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Tong Xu
- College of Chemistry & Materials Engineering, Wenzhou University, Wenzhou 325035, China
| | - Yinlin Shao
- College of Chemistry & Materials Engineering, Wenzhou University, Wenzhou 325035, China
| | - Ling Dai
- College of Chemistry & Materials Engineering, Wenzhou University, Wenzhou 325035, China
| | - Shulin Yu
- College of Chemistry & Materials Engineering, Wenzhou University, Wenzhou 325035, China
| | - Tianxing Cheng
- College of Chemistry & Materials Engineering, Wenzhou University, Wenzhou 325035, China
| | - Jiuxi Chen
- College of Chemistry & Materials Engineering, Wenzhou University, Wenzhou 325035, China
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18
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Yamamoto H, Nakata K. Diastereoconvergent Synthesis of Chiral Diarylmethyl Sulfones by Direct Sulfonylation of Diarylmethanols Diastereomixtures with Sodium Sulfinates Catalyzed by SnBr 2. European J Org Chem 2019. [DOI: 10.1002/ejoc.201900830] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Hiroshi Yamamoto
- Department of Chemistry; Graduate School of Natural Science and Technology; Shimane University; 1060 Nishikawatsu, Matsue 690-8504 Shimane Japan
| | - Kenya Nakata
- Department of Chemistry; Graduate School of Natural Science and Technology; Shimane University; 1060 Nishikawatsu, Matsue 690-8504 Shimane Japan
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19
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Guo J, Kuang C, Rong J, Li L, Ni C, Hu J. Rapid Deoxyfluorination of Alcohols with N-Tosyl-4-chlorobenzenesulfonimidoyl Fluoride (SulfoxFluor) at Room Temperature. Chemistry 2019; 25:7259-7264. [PMID: 30869818 DOI: 10.1002/chem.201901176] [Citation(s) in RCA: 44] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2019] [Indexed: 12/26/2022]
Abstract
The deoxyfluorination of alcohols is a fundamentally important approach to access alkyl fluorides, and thus the development of shelf-stable, easy-to-handle, fluorine-economical, and highly selective deoxyfluorination reagents is highly desired. This work describes the development of a crystalline compound, N-tosyl-4-chlorobenzenesulfonimidoyl fluoride (SulfoxFluor), as a novel deoxyfluorination reagent that possesses all of the aforementioned merits, which is rare in the arena of deoxyfluorination. Endowed by the multi-dimensional modulating ability of the sulfonimidoyl group, SulfoxFluor is superior to 2-pyridinesulfonyl fluoride (PyFluor) in fluorination rate, and is also superior to perfluorobutanesulfonyl fluoride (PBSF) in fluorine-economy. Its reaction with alcohols not only tolerates a wide range of functionalities including the more sterically hindered alcoholic hydroxyl groups, but also exhibits high fluorination/elimination selectivity. Because SulfoxFluor can be easily prepared from inexpensive materials and can be safely handled without special techniques, it promises to serve as a practical deoxyfluorination reagent for the synthesis of various alkyl fluorides.
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Affiliation(s)
- Junkai Guo
- Key Laboratory of Organofluorine Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Ling-Ling Road, Shanghai, 200032, P. R. China
| | - Cuiwen Kuang
- Key Laboratory of Organofluorine Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Ling-Ling Road, Shanghai, 200032, P. R. China
| | - Jian Rong
- Key Laboratory of Organofluorine Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Ling-Ling Road, Shanghai, 200032, P. R. China
| | - Lingchun Li
- Key Laboratory of Organofluorine Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Ling-Ling Road, Shanghai, 200032, P. R. China
| | - Chuanfa Ni
- Key Laboratory of Organofluorine Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Ling-Ling Road, Shanghai, 200032, P. R. China
| | - Jinbo Hu
- Key Laboratory of Organofluorine Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Ling-Ling Road, Shanghai, 200032, P. R. China
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20
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Wang Q, Chen Z, Zhou Q, Zhou C, Xiong B, Zhang P, Yang C, Liu Y, Tang K. Transition Metal‐Free Difunctionalization of C−C Bond with Sodium Sulfinates and Water Leading to (
E
)‐1‐Phenyl‐4‐sulfonylbut‐1‐enes. Adv Synth Catal 2019. [DOI: 10.1002/adsc.201801475] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Qiao‐Lin Wang
- Department of Chemistry and Chemical EngineeringHunan Institute of Science and Technology Yueyang 414006 People's Republic of China
| | - Zan Chen
- Department of Chemistry and Chemical EngineeringHunan Institute of Science and Technology Yueyang 414006 People's Republic of China
| | - Quan Zhou
- Department of Chemistry and Chemical EngineeringHunan Institute of Science and Technology Yueyang 414006 People's Republic of China
| | - Cong‐Shan Zhou
- Department of Chemistry and Chemical EngineeringHunan Institute of Science and Technology Yueyang 414006 People's Republic of China
| | - Bi‐Quan Xiong
- Department of Chemistry and Chemical EngineeringHunan Institute of Science and Technology Yueyang 414006 People's Republic of China
| | - Pan‐Liang Zhang
- Department of Chemistry and Chemical EngineeringHunan Institute of Science and Technology Yueyang 414006 People's Republic of China
| | - Chang‐An Yang
- Department of Chemistry and Chemical EngineeringHunan Institute of Science and Technology Yueyang 414006 People's Republic of China
| | - Yu Liu
- Department of Chemistry and Chemical EngineeringHunan Institute of Science and Technology Yueyang 414006 People's Republic of China
| | - Ke‐Wen Tang
- Department of Chemistry and Chemical EngineeringHunan Institute of Science and Technology Yueyang 414006 People's Republic of China
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21
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Desulfination versus decarboxylation as a means of generating three- and five-coordinate organopalladium complexes [(phen)nPd(C6H5)]+ (n = 1 and 2) to study their fundamental bimolecular reactivity. J Organomet Chem 2019. [DOI: 10.1016/j.jorganchem.2018.11.028] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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22
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Gong J, Hu K, Zhang Y, Shao Y, Cheng T, Hu M, Chen J. Efficient Tandem Addition/Cyclization for Access to 2,4-Diarylquinazolines via Catalytic Carbopalladation of Nitriles. Molecules 2019; 24:E463. [PMID: 30696083 PMCID: PMC6384746 DOI: 10.3390/molecules24030463] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2018] [Revised: 01/21/2019] [Accepted: 01/27/2019] [Indexed: 11/17/2022] Open
Abstract
The first example of the palladium-catalyzed tandem addition/cyclization of 2-(benzylidenamino)benzonitriles with arylboronic acids has been developed. This transformation features good functional group tolerance and provides an alternative synthetic pathway to access 2,4-diarylquinazolines in moderate to good yields. A plausible mechanism for the formation of 2,4-diarylquinazolines involving sequential nucleophilic addition followed by an intramolecular cyclization is proposed.
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Affiliation(s)
- Julin Gong
- College of Chemistry & Materials Engineering, Wenzhou University, Wenzhou 325035, China.
| | - Kun Hu
- College of Chemistry & Materials Engineering, Wenzhou University, Wenzhou 325035, China.
| | - Yetong Zhang
- College of Chemistry & Materials Engineering, Wenzhou University, Wenzhou 325035, China.
| | - Yinlin Shao
- College of Chemistry & Materials Engineering, Wenzhou University, Wenzhou 325035, China.
| | - Tianxing Cheng
- College of Chemistry & Materials Engineering, Wenzhou University, Wenzhou 325035, China.
| | - Maolin Hu
- College of Chemistry & Materials Engineering, Wenzhou University, Wenzhou 325035, China.
| | - Jiuxi Chen
- College of Chemistry & Materials Engineering, Wenzhou University, Wenzhou 325035, China.
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23
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Wei J, Liang H, Ni C, Sheng R, Hu J. Transition-Metal-Free Desulfinative Cross-Coupling of Heteroaryl Sulfinates with Grignard Reagents. Org Lett 2019; 21:937-940. [DOI: 10.1021/acs.orglett.8b03918] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Jun Wei
- College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, China
| | - Huamin Liang
- Key Laboratory of Organofluorine Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Ling-Ling Road, Shanghai 200032, China
- School of Physical Science and Technology, ShanghaiTech University, 100 Haike Road, Shanghai 201210, China
| | - Chuanfa Ni
- Key Laboratory of Organofluorine Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Ling-Ling Road, Shanghai 200032, China
| | - Rong Sheng
- College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, China
| | - Jinbo Hu
- Key Laboratory of Organofluorine Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Ling-Ling Road, Shanghai 200032, China
- School of Physical Science and Technology, ShanghaiTech University, 100 Haike Road, Shanghai 201210, China
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24
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Chang S, Liu Y, Yin SZ, Dong LL, Wang JF. Pd-Catalyzed decarboxylative alkynylation of alkynyl carboxylic acids with arylsulfonyl hydrazides via a desulfinative process. NEW J CHEM 2019. [DOI: 10.1039/c8nj02964d] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
The decarboxylative alkynylation of alkynyl carboxylic acids and arylsulfonyl hydrazides by desulfinative coupling could provide aryl alkynes in satisfactory yields by either judiciously selecting palladium catalysts or modulating phosphine ligands under mild conditions.
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Affiliation(s)
- Sheng Chang
- College of Pharmacy
- Jilin Medical University, Jilin
- Jilin
- China
- State Key Laboratory of Medicinal Chemical Biology
| | - Ying Liu
- College of Pharmacy
- Jilin Medical University, Jilin
- Jilin
- China
| | - Shu Zhu Yin
- College of Pharmacy
- Yanbian University
- Yanji
- China
| | | | - Jian Feng Wang
- Department of Radiotherapy
- China-Japan Union Hospital of Jilin University
- Changchun
- China
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25
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Lin F, Yu JL, Shen Y, Zhang SQ, Spingler B, Liu J, Hong X, Duttwyler S. Palladium-Catalyzed Selective Five-Fold Cascade Arylation of the 12-Vertex Monocarborane Anion by B–H Activation. J Am Chem Soc 2018; 140:13798-13807. [DOI: 10.1021/jacs.8b07872] [Citation(s) in RCA: 69] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Furong Lin
- Department of Chemistry, Zhejiang University, 38 Zheda Road, 310027 Hangzhou, People’s Republic of China
| | - Jing-Lu Yu
- Department of Chemistry, Zhejiang University, 38 Zheda Road, 310027 Hangzhou, People’s Republic of China
| | - Yunjun Shen
- Department of Chemistry, Zhejiang University, 38 Zheda Road, 310027 Hangzhou, People’s Republic of China
| | - Shuo-Qing Zhang
- Department of Chemistry, Zhejiang University, 38 Zheda Road, 310027 Hangzhou, People’s Republic of China
| | - Bernhard Spingler
- Department of Chemistry, University of Zurich, Winterthurerstrasse 190, 8057 Zurich, Switzerland
| | - Jiyong Liu
- Department of Chemistry, Zhejiang University, 38 Zheda Road, 310027 Hangzhou, People’s Republic of China
| | - Xin Hong
- Department of Chemistry, Zhejiang University, 38 Zheda Road, 310027 Hangzhou, People’s Republic of China
| | - Simon Duttwyler
- Department of Chemistry, Zhejiang University, 38 Zheda Road, 310027 Hangzhou, People’s Republic of China
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26
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Zhang Y, Shao Y, Gong J, Hu K, Cheng T, Chen J. Palladium-Catalyzed Tandem Reaction of Quinazolinone-Based Nitriles with Arylboronic Acids: Synthesis of 2-(4-Arylquinazolin-2-yl)anilines. Adv Synth Catal 2018. [DOI: 10.1002/adsc.201800615] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Yetong Zhang
- College of Chemistry and Materials Engineering; Wenzhou University; Wenzhou 325035 People's Republic of China
| | - Yinlin Shao
- College of Chemistry and Materials Engineering; Wenzhou University; Wenzhou 325035 People's Republic of China
| | - Julin Gong
- College of Chemistry and Materials Engineering; Wenzhou University; Wenzhou 325035 People's Republic of China
| | - Kun Hu
- College of Chemistry and Materials Engineering; Wenzhou University; Wenzhou 325035 People's Republic of China
| | - Tianxing Cheng
- College of Chemistry and Materials Engineering; Wenzhou University; Wenzhou 325035 People's Republic of China
| | - Jiuxi Chen
- College of Chemistry and Materials Engineering; Wenzhou University; Wenzhou 325035 People's Republic of China
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27
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Hu K, Zhen Q, Gong J, Cheng T, Qi L, Shao Y, Chen J. Palladium-Catalyzed Three-Component Tandem Process: One-Pot Assembly of Quinazolines. Org Lett 2018; 20:3083-3087. [DOI: 10.1021/acs.orglett.8b01070] [Citation(s) in RCA: 61] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Kun Hu
- College of Chemistry & Materials Engineering, Wenzhou University, Wenzhou, Zhejiang 325035, P. R. China
| | - Qianqian Zhen
- College of Chemistry & Materials Engineering, Wenzhou University, Wenzhou, Zhejiang 325035, P. R. China
| | - Julin Gong
- College of Chemistry & Materials Engineering, Wenzhou University, Wenzhou, Zhejiang 325035, P. R. China
| | - Tianxing Cheng
- College of Chemistry & Materials Engineering, Wenzhou University, Wenzhou, Zhejiang 325035, P. R. China
| | - Linjun Qi
- College of Chemistry & Materials Engineering, Wenzhou University, Wenzhou, Zhejiang 325035, P. R. China
| | - Yinlin Shao
- College of Chemistry & Materials Engineering, Wenzhou University, Wenzhou, Zhejiang 325035, P. R. China
| | - Jiuxi Chen
- College of Chemistry & Materials Engineering, Wenzhou University, Wenzhou, Zhejiang 325035, P. R. China
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28
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Kumar Y, Jaiswal Y, Kumar A. Two-Step One-Pot Synthesis of Unsymmetrical (Hetero)Aryl 1,2-Diketones by Addition-Oxygenation of Potassium Aryltrifluoroborates to (Hetero)Arylacetonitriles. European J Org Chem 2018. [DOI: 10.1002/ejoc.201701625] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Yogesh Kumar
- Department of Chemistry; Indian Institute of Technology Patna; 801103 Bihta Bihar India
| | - Yogesh Jaiswal
- Department of Chemistry; Indian Institute of Technology Patna; 801103 Bihta Bihar India
| | - Amit Kumar
- Department of Chemistry; Indian Institute of Technology Patna; 801103 Bihta Bihar India
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29
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Li H, Sasmal A, Shi X, Soulé JF, Doucet H. Halo-substituted benzenesulfonyls and benzenesulfinates: convenient sources of arenes in metal-catalyzed C–C bond formation reactions for the straightforward access to halo-substituted arenes. Org Biomol Chem 2018; 16:4399-4423. [DOI: 10.1039/c8ob00632f] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
The use of halo-substituted ArSO2R as an aryl source in metal-catalyzed C–C bond formation reactions presents several advantages, as the reaction often proceeds without cleavage of the C–halo bonds.
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Affiliation(s)
- Haoran Li
- Univ Rennes
- Ecole Nationale Supérieure de Chimie de Rennes
- CNRS
- ISCR-UMR 6226
- F-35000 Rennes
| | - Arpan Sasmal
- Univ Rennes
- Ecole Nationale Supérieure de Chimie de Rennes
- CNRS
- ISCR-UMR 6226
- F-35000 Rennes
| | - Xinzhe Shi
- Univ Rennes
- Ecole Nationale Supérieure de Chimie de Rennes
- CNRS
- ISCR-UMR 6226
- F-35000 Rennes
| | - Jean-François Soulé
- Univ Rennes
- Ecole Nationale Supérieure de Chimie de Rennes
- CNRS
- ISCR-UMR 6226
- F-35000 Rennes
| | - Henri Doucet
- Univ Rennes
- Ecole Nationale Supérieure de Chimie de Rennes
- CNRS
- ISCR-UMR 6226
- F-35000 Rennes
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30
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Chang MY, Chen HY, Wang HS. Regiocontrolled Synthesis of α-Sulfonylmethyl o-Nitrostyrenes via ZnI 2-Mediated Sulfonylation and AgNO 2/Pd(PPh 3) 4-Promoted o-Nitration. J Org Chem 2017; 82:10601-10610. [PMID: 28926711 DOI: 10.1021/acs.joc.7b02311] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
We report herein the AgNO2/Pd(PPh3)4-promoted regiocontrolled o-nitration of α-sulfonylmethylstyrenes in MeNO2 with good yields. The o-nitration process provides a series of sulfonyl o-nitrostyrenes. Substituted α-sulfonylmethylstyrenes were synthesized from ZnI2-mediated sulfonylation of substituted α-methylstyrenes and sodium sulfinates (RSO2Na) in MeCN with good to excellent yields. The structures of the key products were confirmed by X-ray crystallography. A plausible mechanism has been proposed herein.
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Affiliation(s)
- Meng-Yang Chang
- Department of Medicinal and Applied Chemistry, Kaohsiung Medical University Hospital, Kaohsiung Medical University , Kaohsiung 807, Taiwan
| | - Han-Yu Chen
- Department of Medicinal and Applied Chemistry, Kaohsiung Medical University Hospital, Kaohsiung Medical University , Kaohsiung 807, Taiwan
| | - Heui-Sin Wang
- Department of Medicinal and Applied Chemistry, Kaohsiung Medical University Hospital, Kaohsiung Medical University , Kaohsiung 807, Taiwan
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31
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Gaspa S, Porcheddu A, Valentoni A, Garroni S, Enzo S, De Luca L. A Mechanochemical-Assisted Oxidation of Amines to Carbonyl Compounds and Nitriles. European J Org Chem 2017. [DOI: 10.1002/ejoc.201700689] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Silvia Gaspa
- Dipartimento di Chimica e Farmacia; Università degli Studi di Sassari; via Vienna 2 07100 Sassari Italy
| | - Andrea Porcheddu
- Dipartimento di Scienze Chimiche e Geologiche; Università degli Studi di Cagliari; Cittadella Universitaria 09042 Monserrato Italy
| | - Antonio Valentoni
- Dipartimento di Chimica e Farmacia; Università degli Studi di Sassari; via Vienna 2 07100 Sassari Italy
| | - Sebastiano Garroni
- International Research Centre in Critical Raw Materials-ICCRAM; University of Burgos; Plaza Misael Banuelos s/n 09001 Burgos Spain
- Advanced Materials; Nuclear Technology and Applied Bio/Nanotechnology, Consolidated Research Unit UIC-154, University of Burgos; Hospital del Rey s/n 09001 Burgos Spain
| | - Stefano Enzo
- Dipartimento di Chimica e Farmacia; Università degli Studi di Sassari; via Vienna 2 07100 Sassari Italy
| | - Lidia De Luca
- Dipartimento di Chimica e Farmacia; Università degli Studi di Sassari; via Vienna 2 07100 Sassari Italy
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32
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Yu S, Qi L, Hu K, Gong J, Cheng T, Wang Q, Chen J, Wu H. The Development of a Palladium-Catalyzed Tandem Addition/Cyclization for the Construction of Indole Skeletons. J Org Chem 2017; 82:3631-3638. [DOI: 10.1021/acs.joc.7b00148] [Citation(s) in RCA: 49] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Shuling Yu
- College of Chemistry and
Materials Engineering, Wenzhou University, Wenzhou 325035, China
| | - Linjun Qi
- College of Chemistry and
Materials Engineering, Wenzhou University, Wenzhou 325035, China
| | - Kun Hu
- College of Chemistry and
Materials Engineering, Wenzhou University, Wenzhou 325035, China
| | - Julin Gong
- College of Chemistry and
Materials Engineering, Wenzhou University, Wenzhou 325035, China
| | - Tianxing Cheng
- College of Chemistry and
Materials Engineering, Wenzhou University, Wenzhou 325035, China
| | - Qingzong Wang
- College of Chemistry and
Materials Engineering, Wenzhou University, Wenzhou 325035, China
| | - Jiuxi Chen
- College of Chemistry and
Materials Engineering, Wenzhou University, Wenzhou 325035, China
| | - Huayue Wu
- College of Chemistry and
Materials Engineering, Wenzhou University, Wenzhou 325035, China
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33
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Electrocatalytic synthesis of nitriles from aldehydes with ammonium acetate as the nitrogen source. Electrochim Acta 2017. [DOI: 10.1016/j.electacta.2016.12.168] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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34
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Prieto P, de la Hoz A, Díaz-Ortiz A, Rodríguez AM. Understanding MAOS through computational chemistry. Chem Soc Rev 2017; 46:431-451. [DOI: 10.1039/c6cs00393a] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Computational chemistry may explain and rationalize the impact of microwave irradiation in organic synthesis.
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Affiliation(s)
- P. Prieto
- Departamento de Química Orgánica
- Facultad de Ciencias y Tecnologías Químicas
- Universidad de Castilla-La Mancha
- 13071 Ciudad Real
- Spain
| | - A. de la Hoz
- Departamento de Química Orgánica
- Facultad de Ciencias y Tecnologías Químicas
- Universidad de Castilla-La Mancha
- 13071 Ciudad Real
- Spain
| | - A. Díaz-Ortiz
- Departamento de Química Orgánica
- Facultad de Ciencias y Tecnologías Químicas
- Universidad de Castilla-La Mancha
- 13071 Ciudad Real
- Spain
| | - A. M. Rodríguez
- Department of Chemical Sciences
- University of Naples Federico II
- Naples 80126
- Italy
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35
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Yu S, Hu K, Gong J, Qi L, Zhu J, Zhang Y, Cheng T, Chen J. Palladium-catalyzed tandem addition/cyclization in aqueous medium: synthesis of 2-arylindoles. Org Biomol Chem 2017; 15:4300-4307. [DOI: 10.1039/c7ob00572e] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Pd-catalyzed tandem reaction of potassium aryltrifluoroborates with nitriles for the synthesis of 2-arylindoles in aqueous medium.
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Affiliation(s)
- Shuling Yu
- College of Chemistry & Materials Engineering
- Wenzhou University
- Wenzhou 325035
- P. R. China
| | - Kun Hu
- College of Chemistry & Materials Engineering
- Wenzhou University
- Wenzhou 325035
- P. R. China
| | - Julin Gong
- College of Chemistry & Materials Engineering
- Wenzhou University
- Wenzhou 325035
- P. R. China
| | - Linjun Qi
- College of Chemistry & Materials Engineering
- Wenzhou University
- Wenzhou 325035
- P. R. China
| | - Jianghe Zhu
- College of Chemistry & Materials Engineering
- Wenzhou University
- Wenzhou 325035
- P. R. China
| | - Yetong Zhang
- College of Chemistry & Materials Engineering
- Wenzhou University
- Wenzhou 325035
- P. R. China
| | - Tianxing Cheng
- College of Chemistry & Materials Engineering
- Wenzhou University
- Wenzhou 325035
- P. R. China
| | - Jiuxi Chen
- College of Chemistry & Materials Engineering
- Wenzhou University
- Wenzhou 325035
- P. R. China
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36
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You S, Xiao R, Liu H, Cai M. A phosphine-free, heterogeneous palladium-catalyzed atom-efficient carbonylative cross-coupling of triorganoindiums with aryl halides leading to unsymmetrical ketones. NEW J CHEM 2017. [DOI: 10.1039/c7nj02969a] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
A phosphine-free heterogeneous palladium-catalyzed carbonylative cross-coupling of triorganoindiums with aryl halides for the synthesis of unsymmetrical ketones has been described.
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Affiliation(s)
- Shengyong You
- Key Laboratory of Functional Small Organic Molecule
- Ministry of Education and College of Chemistry & Chemical Engineering
- Jiangxi Normal University
- Nanchang 330022
- P. R. China
| | - Ruian Xiao
- 912 Lab Jiangxi Bureau of Geology and Mineral Exploration and Development
- Yingtan 335001
- P. R. China
| | - Haiyi Liu
- Key Laboratory of Functional Small Organic Molecule
- Ministry of Education and College of Chemistry & Chemical Engineering
- Jiangxi Normal University
- Nanchang 330022
- P. R. China
| | - Mingzhong Cai
- Key Laboratory of Functional Small Organic Molecule
- Ministry of Education and College of Chemistry & Chemical Engineering
- Jiangxi Normal University
- Nanchang 330022
- P. R. China
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37
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Skillinghaug B, Rydfjord J, Sävmarker J, Larhed M. Microwave Heated Continuous Flow Palladium(II)-Catalyzed Desulfitative Synthesis of Aryl Ketones. Org Process Res Dev 2016. [DOI: 10.1021/acs.oprd.6b00306] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Bobo Skillinghaug
- Department
of Medicinal Chemistry, Division of Organic Pharmaceutical Chemistry,
Uppsala Biomedical Center, Uppsala University, P.O. Box 574, SE-751 23 Uppsala, Sweden
| | - Jonas Rydfjord
- Department
of Medicinal Chemistry, Division of Organic Pharmaceutical Chemistry,
Uppsala Biomedical Center, Uppsala University, P.O. Box 574, SE-751 23 Uppsala, Sweden
| | - Jonas Sävmarker
- The
Beijer Laboratory for Drug Discovery, Department of Medicinal Chemistry,
Uppsala Biomedical Center, Uppsala University, P.O. Box 574, SE-751 23 Uppsala, Sweden
| | - Mats Larhed
- Department
of Medicinal Chemistry, Science for Life Laboratory, Uppsala Biomedical
Center, Uppsala University, P.O. Box 574, SE-751 23 Uppsala, Sweden
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38
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Gund SH, Balsane KE, Nagarkar JM. Palladium catalyzed desulfinylative couplings between aryl sulfinates and aryl bromide/iodide for the synthesis of biaryls. Tetrahedron 2016. [DOI: 10.1016/j.tet.2016.05.081] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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39
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Yang J, Liu YY, Song RJ, Peng ZH, Li JH. Copper-Mediated 1,2-Difunctionalization of Styrenes with Sodium Arylsulfinates andtert-Butyl Nitrite: Facile Access to α-Sulfonylethanone Oximes. Adv Synth Catal 2016. [DOI: 10.1002/adsc.201600109] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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40
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Wang D, Zhang R, Ning W, Yan Z, Lin S. Three-component oxysulfenylation reaction: two simple and convenient approaches to β-alkoxy sulfides. Org Biomol Chem 2016; 14:5136-40. [PMID: 27185479 DOI: 10.1039/c6ob00646a] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
An unprecedented method for the synthesis of β-alkoxy sulfides via a NaI/HBr-mediated three-component oxysulfenylation reaction of alkenes with arylsulfinic acids and alcohols is reported. Furthermore, I2-promoted oxysulfenylation of alkenes using sodium arylsulfinates instead of arylsulfinic acids to synthesise various β-alkoxy sulfides is also described.
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Affiliation(s)
- Dingyi Wang
- College of Chemistry, Nanchang University, Nanchang, Jiangxi 330031, China.
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41
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Zubair Khalid M, Pallikonda G, Prasad Tulichala R, Chakravarty M. Oxy-Wittig reactions of 1-naphthyl(aryl)methylphosphonates: a new approach to naphthylarylketones. Tetrahedron 2016. [DOI: 10.1016/j.tet.2016.02.053] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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42
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Skillinghaug B, Rydfjord J, Odell LR. Synthesis of sodium aryl sulfinates from aryl bromides employing 1,4-diazabicyclo[2.2.2]octane bis(sulfur dioxide) adduct (DABSO) as a bench-stable, gas-free alternative to SO2. Tetrahedron Lett 2016. [DOI: 10.1016/j.tetlet.2015.12.073] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
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43
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Iacobucci C, Reale S, De Angelis F. Elusive Reaction Intermediates in Solution Explored by ESI-MS: Reverse Periscope for Mechanistic Investigations. Angew Chem Int Ed Engl 2016; 55:2980-93. [DOI: 10.1002/anie.201507088] [Citation(s) in RCA: 91] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2015] [Revised: 09/18/2015] [Indexed: 01/02/2023]
Affiliation(s)
- Claudio Iacobucci
- Dipartimento di Scienze Fisiche e Chimiche; Università dell'Aquila; Via Vetoio, Coppito 67100 L'Aquila Italy
| | - Samantha Reale
- Dipartimento di Scienze Fisiche e Chimiche; Università dell'Aquila; Via Vetoio, Coppito 67100 L'Aquila Italy
| | - Francesco De Angelis
- Dipartimento di Scienze Fisiche e Chimiche; Università dell'Aquila; Via Vetoio, Coppito 67100 L'Aquila Italy
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44
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Iacobucci C, Reale S, De Angelis F. Elektrospray-Massenspektrometrie: ein umgekehrtes Periskop zur Erforschung von Reaktionsmechanismen in Lösung. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201507088] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Claudio Iacobucci
- Dipartimento di Scienze Fisiche e Chimiche; Università dell'Aquila; Via Vetoio, Coppito 67100 L'Aquila Italien
| | - Samantha Reale
- Dipartimento di Scienze Fisiche e Chimiche; Università dell'Aquila; Via Vetoio, Coppito 67100 L'Aquila Italien
| | - Francesco De Angelis
- Dipartimento di Scienze Fisiche e Chimiche; Università dell'Aquila; Via Vetoio, Coppito 67100 L'Aquila Italien
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45
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Galaverna R, Camilo NS, Godoi MN, Coelho F, Eberlin MN. Charge Tags for Most Comprehensive ESI-MS Monitoring of Morita–Baylis–Hillman (MBH)/aza-MBH Reactions: Solid Mechanistic View and the Dualistic Role of the Charge Tagged Acrylate. J Org Chem 2016; 81:1089-98. [DOI: 10.1021/acs.joc.5b02651] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Affiliation(s)
- Renan Galaverna
- ThoMSon
Mass Spectrometry Laboratory, Institute of Chemistry, University of Campinas - UNICAMP, P.O.
Box 6154, Zip Code 13083-970, Campinas, SP, Brazil
| | - Nilton S. Camilo
- Laboratory
of Synthesis of Natural Products and Drugs, Institute of Chemistry, University of Campinas - UNICAMP, P.O. Box 6154, Zip Code 13083-970, Campinas, SP, Brazil
| | - Marla N. Godoi
- Health Sciences Federal University of Porto Alegre - UFCSPA, Department of Pharmacoscience Sarmento Leite, Zip Code 90050-170, Porto Alegre, RS, Brazil
| | - Fernando Coelho
- Laboratory
of Synthesis of Natural Products and Drugs, Institute of Chemistry, University of Campinas - UNICAMP, P.O. Box 6154, Zip Code 13083-970, Campinas, SP, Brazil
| | - Marcos N. Eberlin
- ThoMSon
Mass Spectrometry Laboratory, Institute of Chemistry, University of Campinas - UNICAMP, P.O.
Box 6154, Zip Code 13083-970, Campinas, SP, Brazil
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46
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Wang C, Jia H, Li Z, Zhang H, Zhao B. Palladium-catalyzed C-3 desulfitative arylation of indolizines with sodium arylsulfinates and arylsulfonyl hydrazides. RSC Adv 2016. [DOI: 10.1039/c5ra25504j] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Derivatized indolizines were efficiently prepared by direct C-3 arylation of indolizines using sodium arylsulfinates and arylsulfonyl hydrazides in good yields.
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Affiliation(s)
- Chunjie Wang
- College of Chemistry and Chemical Engineering
- Zhoukou Normal University
- Zhoukou
- China
| | - Huali Jia
- College of Chemistry and Chemical Engineering
- Zhoukou Normal University
- Zhoukou
- China
| | - Zhiwei Li
- College of Chemistry and Chemical Engineering
- Zhoukou Normal University
- Zhoukou
- China
| | - Hui Zhang
- College of Chemistry and Chemical Engineering
- Zhoukou Normal University
- Zhoukou
- China
| | - Baoli Zhao
- Institute of Applied Chemistry and Department of Chemistry
- Shaoxing University
- Shaoxing
- China
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47
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Ortgies DH, Hassanpour A, Chen F, Woo S, Forgione P. Desulfination as an Emerging Strategy in Palladium-Catalyzed C-C Coupling Reactions. European J Org Chem 2015. [DOI: 10.1002/ejoc.201501231] [Citation(s) in RCA: 75] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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48
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Ji CH, Zhang XH. DFT study on the mechanism of Pd(OAc)2-catalyzed hydrothiolation of alkenes bearing heteroatoms with benzenethiol. Struct Chem 2015. [DOI: 10.1007/s11224-015-0673-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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49
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Asahara H, Arikiyo K, Nishiwaki N. Development of variously functionalized nitrile oxides. Beilstein J Org Chem 2015; 11:1241-5. [PMID: 26425182 PMCID: PMC4578391 DOI: 10.3762/bjoc.11.138] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2015] [Accepted: 07/16/2015] [Indexed: 12/13/2022] Open
Abstract
N-Methylated amides (N,4-dimethylbenzamide and N-methylcyclohexanecarboxamide) were systematically subjected to chemical transformations, namely, N-tosylation followed by nucleophilic substitution. The amide function was converted to the corresponding carboxylic acid, esters, amides, aldehyde, and ketone upon treatment with hydroxide, alkoxide, amine, diisobutylaluminium hydride and Grignard reagent, respectively. In these transformations, N-methyl-N-tosylcarboxamides behave like a Weinreb amide. Similarly, N-methyl-5-phenylisoxazole-3-carboxamide was converted into 3-functionalized isoxazole derivatives. Since the amide was prepared by the cycloaddition reaction of ethynylbenzene and N-methylcarbamoylnitrile oxide, the nitrile oxide served as the equivalent of the nitrile oxides bearing a variety of functional groups such as carboxy, alkoxycarbonyl, carbamoyl, acyl and formyl moieties.
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Affiliation(s)
- Haruyasu Asahara
- School of Environmental Science and Engineering, Kochi University of Technology, Tosayamada, Kami, Kochi 782-8502, Japan ; Research Center for Material Science and Engineering, Kochi University of Technology, Tosayamada, Kami, Kochi 782-8502, Japan
| | - Keita Arikiyo
- School of Environmental Science and Engineering, Kochi University of Technology, Tosayamada, Kami, Kochi 782-8502, Japan
| | - Nagatoshi Nishiwaki
- School of Environmental Science and Engineering, Kochi University of Technology, Tosayamada, Kami, Kochi 782-8502, Japan ; Research Center for Material Science and Engineering, Kochi University of Technology, Tosayamada, Kami, Kochi 782-8502, Japan
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50
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Metal-free efficient cross coupling of aromatic aldehydes with aryldiazonium tetrafluoroborates using DTBP as a radical initiator. Tetrahedron Lett 2015. [DOI: 10.1016/j.tetlet.2015.05.055] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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