1
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Meng F, Cui Y, Xu W, Yang WC. Visible-Light-Induced Domino Perfluoroalkylation/Cyclization to Access Perfluoroalkylated Quinazolinones by an EDA Complex. Org Lett 2024. [PMID: 39087724 DOI: 10.1021/acs.orglett.4c02465] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/02/2024]
Abstract
The electron donor-acceptor (EDA) complexes have been extensively studied, which formed an electronically excited state, obviating the need for an exogenous photocatalyst. Herein, we report a mild and efficient strategy for photoinduced radical domino perfluoroalkylation/cyclization using N,N,N',N'-tetramethylethane-1,2-diamine (TMEDA) as an electron donor. This protocol could be well expanded to access various polycyclic quinazolinones containing perfluoroalkyl groups, exhibiting photocatalyst-free, good functional group tolerance, and environmentally friendly features.
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Affiliation(s)
- Fei Meng
- Institute of Pesticide, College of Plant Protection, Yangzhou University, Yangzhou 225009, China
| | - Yangyang Cui
- Institute of Pesticide, College of Plant Protection, Yangzhou University, Yangzhou 225009, China
| | - Wen Xu
- Institute of Pesticide, College of Plant Protection, Yangzhou University, Yangzhou 225009, China
| | - Wen-Chao Yang
- Institute of Pesticide, College of Plant Protection, Yangzhou University, Yangzhou 225009, China
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2
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Huang J, Ban C, Qin J, Xu J, Gu Y, Wei L, Yuan JM, Huang G. Visible-light promoted radical cascade cyclization of 3-allyl-2-arylquinazolinones for the synthesis of phosphorylated dihydroisoquinolino[1,2- b]quinazolinones. Chem Commun (Camb) 2024; 60:8119-8122. [PMID: 38995155 DOI: 10.1039/d4cc02915a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/13/2024]
Abstract
A novel visible-light promoted metal-free radical cascade cyclization reaction has been developed with 3-allyl-2-arylquinazolinones as a new class of radical acceptor. This photocatalytic protocol represents an efficient approach to construct phosphorylated dihydroisoquinolino[1,2-b]quinazolinones featuring mild conditions, broad substrate scope, and gram-scale synthesis.
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Affiliation(s)
- Jun Huang
- Guangxi Key Laboratory of Natural Polymer Chemistry and Physics, College of Chemistry and Materials, Nanning Normal University, Nanning 530001, P. R. China.
| | - Caijin Ban
- Guangxi Key Laboratory of Natural Polymer Chemistry and Physics, College of Chemistry and Materials, Nanning Normal University, Nanning 530001, P. R. China.
| | - Jiangping Qin
- Guangxi Key Laboratory of Natural Polymer Chemistry and Physics, College of Chemistry and Materials, Nanning Normal University, Nanning 530001, P. R. China.
| | - Jiali Xu
- Guangxi Key Laboratory of Natural Polymer Chemistry and Physics, College of Chemistry and Materials, Nanning Normal University, Nanning 530001, P. R. China.
| | - Yunqiong Gu
- Guangxi Key Laboratory of Agricultural Resources Chemistry and Biotechnology, College of Chemistry and Food Science, Yulin Normal University, Yulin 537000, P. R. China
| | - Liang Wei
- Guangxi Key Laboratory of Natural Polymer Chemistry and Physics, College of Chemistry and Materials, Nanning Normal University, Nanning 530001, P. R. China.
| | - Jing-Mei Yuan
- Guangxi Key Laboratory of Natural Polymer Chemistry and Physics, College of Chemistry and Materials, Nanning Normal University, Nanning 530001, P. R. China.
- Guangxi Key Laboratory of Agricultural Resources Chemistry and Biotechnology, College of Chemistry and Food Science, Yulin Normal University, Yulin 537000, P. R. China
| | - Guobao Huang
- Guangxi Key Laboratory of Agricultural Resources Chemistry and Biotechnology, College of Chemistry and Food Science, Yulin Normal University, Yulin 537000, P. R. China
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3
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Raji Reddy C, Neeliveettil A, Ajaykumar U, Punna N, Neuville L, Masson G. Access to N-Fused Quinazolinones by Radical-Promoted Cascade Annulations of Alkenyl N-Cyanamides with Aromatic Aldehydes. J Org Chem 2024; 89:7115-7124. [PMID: 38691342 DOI: 10.1021/acs.joc.4c00494] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/03/2024]
Abstract
A cascade radical cyclization of alkenyl N-cyanamides with aromatic aldehydes has been achieved for an expeditious synthesis of keto-methylated dihydropyrrolo-quinazolinones. Benzoyl radicals, generated from aryl aldehydes in the presence of di-tert-butyl peroxide (DTBP), promoted the domino annulations leading to distinctive functionalized quinazolinones in good yields. In addition, the robustness of the present protocol is validated by employing heterocyclic and natural product-based aldehydes.
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Affiliation(s)
- Chada Raji Reddy
- Department of Organic Synthesis & Process Chemistry CSIR-Indian Institute of Chemical Technology (CSIR-IICT), Hyderabad 500007, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Anootha Neeliveettil
- Department of Organic Synthesis & Process Chemistry CSIR-Indian Institute of Chemical Technology (CSIR-IICT), Hyderabad 500007, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Uprety Ajaykumar
- Department of Organic Synthesis & Process Chemistry CSIR-Indian Institute of Chemical Technology (CSIR-IICT), Hyderabad 500007, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Nagender Punna
- Department of Organic Synthesis & Process Chemistry CSIR-Indian Institute of Chemical Technology (CSIR-IICT), Hyderabad 500007, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Luc Neuville
- Institut de Chimie des Substances Naturelles (ICSN), CNRS UPR 2301, Université Paris-Saclay, 1 avenue de la Terrasse, 91198 Gif-sur-Yvette Cedex, France
| | - Geraldine Masson
- Institut de Chimie des Substances Naturelles (ICSN), CNRS UPR 2301, Université Paris-Saclay, 1 avenue de la Terrasse, 91198 Gif-sur-Yvette Cedex, France
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4
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Cui Y, Xu W, Yang W, Meng F. Access to CF 2COR-Containing Quinazolinones via Visible-Light-Induced Domino Difluoroalkylation/Cyclization of N-Cyanamide Alkenes. Org Lett 2024; 26:2119-2123. [PMID: 38436251 DOI: 10.1021/acs.orglett.4c00457] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/05/2024]
Abstract
A green and highly efficient visible-light-induced radical cascade difluoroalkylation/cyclization reaction of N-cyanamide alkenes has been developed. A variety of CF2COR-containing quinazolinones have been obtained in high yields with cheap non-metallic 4CzIPN as the photocatalyst. This photocatalytic reaction provides rapid, facile, and practical access to valuable polycyclic quinazolinone, and it is amenable to the gram scale.
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Affiliation(s)
- Yangyang Cui
- Institute of Pesticide, College of Plant Protection, Yangzhou University, Yangzhou 225009, China
| | - Wen Xu
- Institute of Pesticide, College of Plant Protection, Yangzhou University, Yangzhou 225009, China
| | - Wenchao Yang
- Institute of Pesticide, College of Plant Protection, Yangzhou University, Yangzhou 225009, China
| | - Fei Meng
- Institute of Pesticide, College of Plant Protection, Yangzhou University, Yangzhou 225009, China
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5
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Wu X, Liu L, Xiang C, Yu JT, Pan C. Photocatalytic cyclization of 3-(2-isocyanophenyl)quinazolin-4(3 H)-ones for the construction of quinoxalino[2,1- b]quinazolinones. Chem Commun (Camb) 2024; 60:2556-2559. [PMID: 38345179 DOI: 10.1039/d4cc00187g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/28/2024]
Abstract
A new kind of building unit, 3-(2-isocyanophenyl)quinazolin-4(3H)-ones, was designed and synthesized for the construction of novel quinoxalino[2,1-b]quinazolinones. The radical cyclization of 3-(2-isocyanophenyl)quinazolin-4(3H)-ones with ethers afforded ether-substituted tetracyclic quinoxalino[2,1-b]quinazolinones under photocatalytic and metal-free conditions. In the process, the isocyano accepts a carbon radical to give an imidoyl radical, which adds to the electron-deficient CN bond in quinazolin-4(3H)-one.
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Affiliation(s)
- Xian Wu
- School of Petrochemical Engineering, Changzhou University, Changzhou 213164, P. R. China.
| | - Lingli Liu
- School of Petrochemical Engineering, Changzhou University, Changzhou 213164, P. R. China.
| | - Chengli Xiang
- School of Petrochemical Engineering, Changzhou University, Changzhou 213164, P. R. China.
| | - Jin-Tao Yu
- School of Petrochemical Engineering, Changzhou University, Changzhou 213164, P. R. China.
| | - Changduo Pan
- School of Petrochemical Engineering, Changzhou University, Changzhou 213164, P. R. China.
- School of Chemistry and Chemical Engineering, Jiangsu University of Technology, Changzhou 213001, P. R. China
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6
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Yan ZH, Yan Y, Wei ZL, Liao WW. Electrochemical Trifluoromethylation/Bicyclization of N-Cyanamide Alkenes: Synthesis of Bicyclic Amidine Derivatives. J Org Chem 2024; 89:2718-2725. [PMID: 38306613 DOI: 10.1021/acs.joc.3c02777] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2024]
Abstract
An anodically oxidizing trifluoromethylation cascade of N-cyanamide alkene bearing two electronically differentiated olefin moieties was reported, in which various N-unsaturated acyl cyanamide alkenes and CF3SO2Na acting as readily available starting materials furnished nonaromatic fused azaheterobicyclic compounds in a highly efficient and sustainable manner. The broad substrate scope, facile scalability, and sustainability enabled this electrochemical process to be an appealing complement for trifluoromethylated cyclic amidines.
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Affiliation(s)
- Zhi-Hua Yan
- Department of Organic Chemistry, College of Chemistry, Jilin University, 2699 Qianjin Street, Changchun 130012, P R China
| | - Yan Yan
- State Key Lab of Inorganic Synthesis and Preparative Chemistry, Jilin University, Changchun 130012, P. R. China
| | - Zhong-Lin Wei
- Department of Organic Chemistry, College of Chemistry, Jilin University, 2699 Qianjin Street, Changchun 130012, P R China
| | - Wei-Wei Liao
- Department of Organic Chemistry, College of Chemistry, Jilin University, 2699 Qianjin Street, Changchun 130012, P R China
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7
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Yang Z, Wu X, Zhang J, Yu JT, Pan C. Metal-Free Photoinduced Hydrocyclization of Unactivated Alkenes toward Ring-Fused Quinazolin-4(3 H)-ones via Intermolecular Hydrogen Atom Transfer. Org Lett 2023; 25:1683-1688. [PMID: 36883803 DOI: 10.1021/acs.orglett.3c00329] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/09/2023]
Abstract
A visible-light-induced hydrocyclization of unactivated alkenes was developed using 3CzClIPN as the photocatalyst to generate substituted α-methyldeoxyvasicinones and α-methylmackinazolinones in moderate to good yields. An intermolecular hydrogen atom transfer with THF as the hydrogen source was involved. Mechanism studies indicated that the intramolecular addition of the in situ formed aminal radical to the unactivated alkene generated the polycyclic quinazolinone.
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Affiliation(s)
- Zixian Yang
- School of Petrochemical Engineering, Changzhou University, Changzhou 213164, P. R. China
| | - Xian Wu
- School of Petrochemical Engineering, Changzhou University, Changzhou 213164, P. R. China
| | - Jie Zhang
- School of Petrochemical Engineering, Changzhou University, Changzhou 213164, P. R. China
| | - Jin-Tao Yu
- School of Petrochemical Engineering, Changzhou University, Changzhou 213164, P. R. China
| | - Changduo Pan
- School of Petrochemical Engineering, Changzhou University, Changzhou 213164, P. R. China.,School of Chemistry and Chemical Engineering, Jiangsu University of Technology, Changzhou 213001, P. R. China
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8
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Zheng YN, Cai XE, Wu HL, Zhou Y, Tian WC, Ruan Y, Liu H, Wei WT. Metal- and Base-Free Radical Cascade Cyclization/Hydrolysis of CN-Containing 1,6-Enynes with Ethers to Access Polyheterocycles. Chem Asian J 2023; 18:e202201149. [PMID: 36550634 DOI: 10.1002/asia.202201149] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2022] [Revised: 12/21/2022] [Accepted: 12/22/2022] [Indexed: 12/24/2022]
Abstract
A convenient and straightforward approach for the radical cascade cyclization/hydrolysis of CN-containing 1,6-enynes with simple ethers under metal- and base-free conditions is described. This strategy provides a variety of valuable ethers-substituted polyheterocycles via the construction of three C-C bonds, one C=O bond, and two new six-membered rings within a single procedure. The resulting products can smoothly undergo follow-up conversions to various useful scaffolds. The methodology shows excellent functional group tolerance, high step- and atom- economy, and mild reaction conditions, which can be further scaled up to gram quantity in a satisfactory yield.
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Affiliation(s)
- Yan-Nan Zheng
- School of Materials Science and Chemical Engineering, Ningbo University, 315211, Ningbo, Zhejiang, P. R. China
| | - Xue-Er Cai
- School of Materials Science and Chemical Engineering, Ningbo University, 315211, Ningbo, Zhejiang, P. R. China
| | - Hong-Li Wu
- School of Materials Science and Chemical Engineering, Ningbo University, 315211, Ningbo, Zhejiang, P. R. China
| | - Yu Zhou
- School of Materials Science and Chemical Engineering, Ningbo University, 315211, Ningbo, Zhejiang, P. R. China
| | - Wen-Chan Tian
- School of Materials Science and Chemical Engineering, Ningbo University, 315211, Ningbo, Zhejiang, P. R. China
| | - Yiping Ruan
- School of Materials Science and Chemical Engineering, Ningbo University, 315211, Ningbo, Zhejiang, P. R. China
| | - Hongxin Liu
- College of Chemistry and Materials Engineering, Wenzhou University, 325035, Wenzhou, P. R. China
| | - Wen-Ting Wei
- School of Materials Science and Chemical Engineering, Ningbo University, 315211, Ningbo, Zhejiang, P. R. China
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9
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Shi Y, Wang K, Ding Y, Xie Y. Transition-metal-free electrochemical oxidative C(sp 2)-H trifluoromethylation of aryl aldehyde hydrazones. Org Biomol Chem 2022; 20:9362-9367. [PMID: 36383151 DOI: 10.1039/d2ob01734b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
A simple protocol of metal-free C-H trifluoromethylation of hydrazones via electrolysis was developed. This environment-friendly transformation showed high efficiency, good tolerance, and scaled-up functionalization, providing the desired products in moderate to good yields. At the same time, a high yield can be obtained for the substrates either bearing an electron-donating group or an electron-withdrawing group by using different trifluoromethyl reagents. In addition, the radical mechanism was confirmed by the control experiment.
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Affiliation(s)
- Yuan Shi
- College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou, 310014, China.
| | - Kai Wang
- Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals, Zhejiang University of Technology, Hangzhou, 310014, China
| | - Yuxin Ding
- College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou, 310014, China.
| | - Yuanyuan Xie
- College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou, 310014, China. .,Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals, Zhejiang University of Technology, Hangzhou, 310014, China.,Key Laboratory of Pharmaceutical Engineering of Zhejiang Province, Hangzhou, 310014, China
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10
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Shi ZZ, Yu T, Ma H, Chi LX, You S, Deng C. Recent advances in radical cascade cyclization of 1,n-enynes with trifluoromethylating agents. Tetrahedron 2022. [DOI: 10.1016/j.tet.2022.133216] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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11
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Ma R, Ren Y, Deng Z, Wang KH, Wang J, Huang D, Hu Y, Lv X. Visible Light Promotes Cascade Trifluoromethylation/Cyclization, Leading to Trifluoromethylated Polycyclic Quinazolinones, Benzimidazoles and Indoles. Molecules 2022; 27:molecules27238389. [PMID: 36500485 PMCID: PMC9737949 DOI: 10.3390/molecules27238389] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Revised: 11/22/2022] [Accepted: 11/24/2022] [Indexed: 12/04/2022] Open
Abstract
Efficient visible-light-induced radical cascade trifluoromethylation/cyclization of inactivated alkenes with CF3Br, which is a nonhygroscopic, noncorrosive, cheap and industrially abundant chemical, was developed in this work, producing trifluoromethyl polycyclic quinazolinones, benzimidazoles and indoles under mild reaction conditions. The method features wide functional group compatibility and a broad substrate scope, offering a facile strategy to pharmaceutically produce valuable CF3-containing polycyclic aza-heterocycles.
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Affiliation(s)
- Ransong Ma
- College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou 730070, China
| | - Yuanyuan Ren
- College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou 730070, China
| | - Zhoubin Deng
- College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou 730070, China
| | - Ke-Hu Wang
- College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou 730070, China
| | - Junjiao Wang
- College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou 730070, China
| | - Danfeng Huang
- College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou 730070, China
| | - Yulai Hu
- College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou 730070, China
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, China
- Correspondence:
| | - Xiaobo Lv
- Shanghai Sinofluoro Chemicals Co., Ltd., Shanghai 201321, China
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12
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Wang X, Liu R, Zhang S, Zhou T, Zhao X, Lu K. Visible-light-induced Radical Cyclization of N-allylbenzamide with [Bis(difluoroacetoxy)iodo]benzene to Difluoromethylated Dihydroisoquinolinones. Tetrahedron Lett 2022. [DOI: 10.1016/j.tetlet.2022.153761] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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13
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Liu H, Yang Z, Yu JT, Pan C. Radical Polychloromethylation/Cyclization of Unactivated Alkenes: Access to Polychloromethyl‑Substituted Ring‐Fused Quinazolinones. Adv Synth Catal 2022. [DOI: 10.1002/adsc.202200001] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Han Liu
- Changzhou University - Wujin Campus CHINA
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14
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Hu Q, Yu WL, Luo YC, Hu XQ, Xu PF. A Photosensitizer-Free Radical Cascade for Synthesizing CF 3-Containing Polycyclic Quinazolinones with Visible Light. J Org Chem 2022; 87:1493-1501. [PMID: 35014249 DOI: 10.1021/acs.joc.1c02889] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Herein, we report an efficient photoinduced radical tandem trifluoromethylation/cyclization reaction of N-cyanamide alkenes for the synthesis of functionalized quinazolinones. Importantly, the reaction is carried out under mild conditions without any additional photosensitizer, metal, or extra additives. A series of trifluoromethyl quinazolinones were prepared efficiently with good yields and excellent functional group tolerance. Preliminary mechanistic experiments were conducted to indicate that the transformation proceeds via a possible mechanism involving photoexcited EDA complex and chain propagation.
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Affiliation(s)
- Qiang Hu
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
| | - Wan-Lei Yu
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
| | - Yong-Chun Luo
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
| | - Xiu-Qin Hu
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
| | - Peng-Fei Xu
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China.,State Key Laboratory of Veterinary Etiological Biology, College of Veterinary Medicine, Lanzhou University, Lanzhou 730000, P. R. China
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15
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Mandal D, Maji S, Pal T, Sinha SK, Maiti D. Recent Advances in Transition-Metal Mediated Trifluoromethylation Reactions. Chem Commun (Camb) 2022; 58:10442-10468. [DOI: 10.1039/d2cc04082d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Fluorine compounds are known for their abundance in more than 20% of pharmaceutical and agrochemical products mainly due to the enhanced lipophilicity, metabolic stability and pharmacokinetic properties of organofluorides. Consequently,...
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16
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Yan ZH, Li WC, Wu YH, Yan QB, Wei ZL, Liao WW. Electrochemical cyclization of N-cyanamide alkenes with CF 3SO 2Na to access C, N-(bis)trifluoromethylated cyclic amidines and related compounds. Org Chem Front 2022. [DOI: 10.1039/d2qo01323a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An electrochemical trifluoromethylative cyclization of N-cyanamide alkenes and alkynes is presented, which afforded (bis)-C,N-trifluoromethylated cyclic amidines, azines and amides with selective multiple bond formations in a controllable manner.
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Affiliation(s)
- Zhi-Hua Yan
- Department of Organic Chemistry, College of Chemistry, Jilin University, Changchun 130012, P. R. China
| | - Wen-Cheng Li
- Department of Organic Chemistry, College of Chemistry, Jilin University, Changchun 130012, P. R. China
| | - Yu-Heng Wu
- Department of Organic Chemistry, College of Chemistry, Jilin University, Changchun 130012, P. R. China
| | - Qi-Bo Yan
- Department of Organic Chemistry, College of Chemistry, Jilin University, Changchun 130012, P. R. China
| | - Zhong-Lin Wei
- Department of Organic Chemistry, College of Chemistry, Jilin University, Changchun 130012, P. R. China
| | - Wei-Wei Liao
- Department of Organic Chemistry, College of Chemistry, Jilin University, Changchun 130012, P. R. China
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, P. R. China
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17
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Li Z, Wu YH, Xi JM, Wei ZL, Liao WW. Copper-Catalyzed Difluoroalkylation of Alkene/Nitrile Insertion/Cyclization Tandem Sequences: Construction of Difluorinated Bicyclic Amidines. Org Lett 2021; 23:9591-9596. [PMID: 34874172 DOI: 10.1021/acs.orglett.1c03802] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
A copper-catalyzed difluoroalkylation of an alkene/nitrile insertion/cyclization tandem sequence of N-cyanamide alkene was described, which provided a convenient synthetic approach for accessing difluorinated bicyclic amidines bearing imine moieties in a sustainable fashion. This protocol is characterized by high yields, a broad substrate scope, and good functional group compatibility. In addition, the desired product can be readily converted into other valuable functionalized fluorinated aza-heterocycles.
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Affiliation(s)
- Zheng Li
- Department of Organic Chemistry, College of Chemistry, Jilin University, 2699 Qianjin Street, Changchun 130012, P. R. China
| | - Yu-Heng Wu
- Department of Organic Chemistry, College of Chemistry, Jilin University, 2699 Qianjin Street, Changchun 130012, P. R. China
| | - Ji-Ming Xi
- Department of Organic Chemistry, College of Chemistry, Jilin University, 2699 Qianjin Street, Changchun 130012, P. R. China
| | - Zhong-Lin Wei
- Department of Organic Chemistry, College of Chemistry, Jilin University, 2699 Qianjin Street, Changchun 130012, P. R. China
| | - Wei-Wei Liao
- Department of Organic Chemistry, College of Chemistry, Jilin University, 2699 Qianjin Street, Changchun 130012, P. R. China.,State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, P. R. China
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18
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Kong R, Fu T, Yang R, Chen D, Liang D, Dong Y, Li W, Wang B. 4‐Nitroanisole Facilitates Proton Reduction: Visible Light‐Induced Oxidative Aryltrifluoromethylation of Alkenes with Hydrogen Evolution. ChemCatChem 2021. [DOI: 10.1002/cctc.202100304] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Rui Kong
- School of Chemistry and Chemical Engineering Kunming University 2 Puxin Road, Kunming Yunnan Province 650214 Kunming P. R. China
| | - Tingfeng Fu
- School of Chemistry and Chemical Engineering Kunming University 2 Puxin Road, Kunming Yunnan Province 650214 Kunming P. R. China
| | - Ruihan Yang
- School of Chemistry and Chemical Engineering Kunming University 2 Puxin Road, Kunming Yunnan Province 650214 Kunming P. R. China
| | - Danna Chen
- School of Chemistry and Chemical Engineering Kunming University 2 Puxin Road, Kunming Yunnan Province 650214 Kunming P. R. China
| | - Deqiang Liang
- School of Chemistry and Chemical Engineering Kunming University 2 Puxin Road, Kunming Yunnan Province 650214 Kunming P. R. China
| | - Ying Dong
- College of Chemistry Chemical Engineering and Materials Science Shandong Normal University Jinan Shandong Province 250014 P. R. China
| | - Weili Li
- School of Chemistry and Chemical Engineering Kunming University 2 Puxin Road, Kunming Yunnan Province 650214 Kunming P. R. China
| | - Baoling Wang
- School of Chemistry and Chemical Engineering Kunming University 2 Puxin Road, Kunming Yunnan Province 650214 Kunming P. R. China
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19
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Ji WZ, Shi HN, Hao WJ, Wei P, Tu SJ, Jiang B. Generation of stereodefined (Z)-3,4-dihydronaphthalen-1(2H)-ones via copper-catalyzed annulation-cyanotrifluoromethylation of 1,7-enynes. Tetrahedron Lett 2021. [DOI: 10.1016/j.tetlet.2020.152722] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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20
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Sun K, Li G, Guo S, Zhang Z, Zhang G. Copper-catalyzed radical cascade cyclization for synthesis of CF 3-containing tetracyclic benzimidazo[2,1- a]iso-quinolin-6(5 H)-ones. Org Biomol Chem 2021; 19:375-378. [PMID: 33351022 DOI: 10.1039/d0ob02210a] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Here, a general copper-catalyzed radical cascade carbocyclization reaction with 2-arylbenzoimidazoles and a Togni reagent was realized. Structurally diverse CF3-containing tetracyclic core benzimidazo[2,1-a]isoquinoline-6(5H)-ones were obtained in moderate to good yields. The wide substrate scope, good functional group tolerance, and ease of scale-up of this method are expected to promote its potential applications in pharmacy and biotechnology.
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Affiliation(s)
- Kai Sun
- School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, 453007, P. R. China. and School of Chemistry and Chemical Engineering, YanTai University, Yantai, 264005, Shandong, P. R. China
| | - Guofeng Li
- School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, 453007, P. R. China.
| | - Sa Guo
- School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, 453007, P. R. China.
| | - Zhiguo Zhang
- School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, 453007, P. R. China.
| | - Guisheng Zhang
- School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, 453007, P. R. China.
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21
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Jiang S, Tian XJ, Feng SY, Li JS, Li ZW, Lu CH, Li CJ, Liu WD. Visible-Light Photoredox Catalyzed Double C–H Functionalization: Radical Cascade Cyclization of Ethers with Benzimidazole-Based Cyanamides. Org Lett 2021; 23:692-696. [DOI: 10.1021/acs.orglett.0c03853] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Si Jiang
- Hunan Provincial Key Laboratory of Material Protection for Electric Power and Transportation, School of Chemistry and Food Engineering, Changsha University of Science and Technology, Changsha 410114, China
| | - Xiao-Jing Tian
- Hunan Provincial Key Laboratory of Material Protection for Electric Power and Transportation, School of Chemistry and Food Engineering, Changsha University of Science and Technology, Changsha 410114, China
| | - Shu-Yao Feng
- Hunan Provincial Key Laboratory of Material Protection for Electric Power and Transportation, School of Chemistry and Food Engineering, Changsha University of Science and Technology, Changsha 410114, China
| | - Jiang-Sheng Li
- Hunan Provincial Key Laboratory of Material Protection for Electric Power and Transportation, School of Chemistry and Food Engineering, Changsha University of Science and Technology, Changsha 410114, China
| | - Zhi-Wei Li
- Hunan Provincial Key Laboratory of Material Protection for Electric Power and Transportation, School of Chemistry and Food Engineering, Changsha University of Science and Technology, Changsha 410114, China
| | - Cui-Hong Lu
- Hunan Provincial Key Laboratory of Material Protection for Electric Power and Transportation, School of Chemistry and Food Engineering, Changsha University of Science and Technology, Changsha 410114, China
| | - Chao-Jun Li
- Department of Chemistry and FQRNT Centre for Green Chemistry and Catalysis, McGill University, 801 Sherbrooke Street West, Montreal, Quebec H3A 0B8, Canada
| | - Wei-Dong Liu
- National Engineering Research Center for Agrochemicals, Hunan Research Institute of Chemical Industry, Changsha 410007, China
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22
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Ma CH, Chen M, Feng ZW, Zhang Y, Wang J, Jiang YQ, Yu B. Functionalization of imidazo[1,2-a]pyridines via radical reactions. NEW J CHEM 2021. [DOI: 10.1039/d1nj00704a] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
The recent advances in radical reactions for the direct functionalization of imidazo[1,2-a]pyridines are reviewed.
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Affiliation(s)
- Chun-Hua Ma
- Collaborative Innovation Centre of Henan Province for Green Manufacturing of Fine Chemicals
- Key Laboratory of Green Chemical Media and Reactions
- Ministry of Education
- Henan Engineering Research Centre of Chiral Hydroxyl Pharmaceutical
- Henan Engineering Laboratory of Chemical Pharmaceutical and Biomedical Materials
| | - Ming Chen
- Collaborative Innovation Centre of Henan Province for Green Manufacturing of Fine Chemicals
- Key Laboratory of Green Chemical Media and Reactions
- Ministry of Education
- Henan Engineering Research Centre of Chiral Hydroxyl Pharmaceutical
- Henan Engineering Laboratory of Chemical Pharmaceutical and Biomedical Materials
| | - Zhi-Wen Feng
- Collaborative Innovation Centre of Henan Province for Green Manufacturing of Fine Chemicals
- Key Laboratory of Green Chemical Media and Reactions
- Ministry of Education
- Henan Engineering Research Centre of Chiral Hydroxyl Pharmaceutical
- Henan Engineering Laboratory of Chemical Pharmaceutical and Biomedical Materials
| | - Yan Zhang
- Collaborative Innovation Centre of Henan Province for Green Manufacturing of Fine Chemicals
- Key Laboratory of Green Chemical Media and Reactions
- Ministry of Education
- Henan Engineering Research Centre of Chiral Hydroxyl Pharmaceutical
- Henan Engineering Laboratory of Chemical Pharmaceutical and Biomedical Materials
| | - Jin Wang
- Collaborative Innovation Centre of Henan Province for Green Manufacturing of Fine Chemicals
- Key Laboratory of Green Chemical Media and Reactions
- Ministry of Education
- Henan Engineering Research Centre of Chiral Hydroxyl Pharmaceutical
- Henan Engineering Laboratory of Chemical Pharmaceutical and Biomedical Materials
| | - Yu-Qin Jiang
- Collaborative Innovation Centre of Henan Province for Green Manufacturing of Fine Chemicals
- Key Laboratory of Green Chemical Media and Reactions
- Ministry of Education
- Henan Engineering Research Centre of Chiral Hydroxyl Pharmaceutical
- Henan Engineering Laboratory of Chemical Pharmaceutical and Biomedical Materials
| | - Bing Yu
- Green Catalysis Centre
- College of Chemistry
- Zhengzhou University
- Zhengzhou 450001
- China
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23
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Sun K, Lv QY, Lin YW, Yu B, He WM. Nitriles as radical acceptors in radical cascade reactions. Org Chem Front 2021. [DOI: 10.1039/d0qo01058h] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
The application of the cyano group as a radical acceptor in the cascade reactions for the construction of various important heterocycles and carbocycles was summarized.
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Affiliation(s)
- Kai Sun
- Green Catalysis Center
- College of Chemistry
- Zhengzhou University
- Zhengzhou 450001
- China
| | - Qi-Yan Lv
- Green Catalysis Center
- College of Chemistry
- Zhengzhou University
- Zhengzhou 450001
- China
| | - Ying-Wu Lin
- School of Chemistry and Chemical Engineering
- University of South China
- Hengyang
- China
| | - Bing Yu
- Green Catalysis Center
- College of Chemistry
- Zhengzhou University
- Zhengzhou 450001
- China
| | - Wei-Min He
- Department of Chemistry
- Hunan University of Science and Engineering
- Yongzhou 425100
- China
- Hunan Provincial Key Laboratory of Materials Protection for Electric Power and Transportation
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24
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Gao F, Sun K, Chen XL, Shi T, Li XY, Qu LB, Zhao YF, Yu B. Visible-Light-Induced Phosphorylation of Imidazo-Fused Heterocycles under Metal-Free Conditions. J Org Chem 2020; 85:14744-14752. [PMID: 33136392 DOI: 10.1021/acs.joc.0c02107] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
A metal-free and base-free procedure for the phosphorylation of imidazo[1,2-a]pyridines with phosphine oxides under the irradiation of visible light at room temperature in green solvent was reported, featuring mild and sustainable conditions, convenient operation, as well as good functional group compatibility.
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Affiliation(s)
- Fan Gao
- Green Catalysis Center, College of Chemistry, Zhengzhou University, Kexue Road No. 100, Zhengzhou 450001, China
| | - Kai Sun
- Green Catalysis Center, College of Chemistry, Zhengzhou University, Kexue Road No. 100, Zhengzhou 450001, China
| | - Xiao-Lan Chen
- Green Catalysis Center, College of Chemistry, Zhengzhou University, Kexue Road No. 100, Zhengzhou 450001, China
| | - Tao Shi
- Green Catalysis Center, College of Chemistry, Zhengzhou University, Kexue Road No. 100, Zhengzhou 450001, China
| | - Xiao-Yun Li
- Green Catalysis Center, College of Chemistry, Zhengzhou University, Kexue Road No. 100, Zhengzhou 450001, China
| | - Ling-Bo Qu
- Green Catalysis Center, College of Chemistry, Zhengzhou University, Kexue Road No. 100, Zhengzhou 450001, China
| | - Yu-Fen Zhao
- Green Catalysis Center, College of Chemistry, Zhengzhou University, Kexue Road No. 100, Zhengzhou 450001, China.,Institute Drug Discovery Technology, Ningbo University, Ningbo 315211, Zhejiang, China
| | - Bing Yu
- Green Catalysis Center, College of Chemistry, Zhengzhou University, Kexue Road No. 100, Zhengzhou 450001, China
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25
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Li Y, Neumann H, Beller M. Ruthenium-Catalyzed Site-Selective Trifluoromethylations and (Per)Fluoroalkylations of Anilines and Indoles. Chemistry 2020; 26:6784-6788. [PMID: 32216068 PMCID: PMC7317475 DOI: 10.1002/chem.202001439] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2020] [Indexed: 01/05/2023]
Abstract
Introducing (per)fluoroalkyl groups into arenes continues to be an interesting, but challenging area in organofluorine chemistry. We herein report an ortho-selective C-H perfluoroalkylation including trifluoromethylations of anilines and indoles without the need of protecting groups using Rf I and Rf Br as commercially available reagents. The availability and price of the starting materials and the inherent selectivity make this novel methodology attractive for the synthesis of diverse (per)fluoroalkylated building blocks, for example, for bioactive compounds and materials.
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Affiliation(s)
- Yang Li
- Leibniz-Institut für Katalyse e.V., RostockAlbert-Einstein-Straße 29a18059RostockGermany
- School of Environmental and Chemical EngineeringXi'an Polytechnic UniversityNo.19 Jinhua South Road710048Xi'anChina
| | - Helfried Neumann
- Leibniz-Institut für Katalyse e.V., RostockAlbert-Einstein-Straße 29a18059RostockGermany
| | - Matthias Beller
- Leibniz-Institut für Katalyse e.V., RostockAlbert-Einstein-Straße 29a18059RostockGermany
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26
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Guo J, Hao Y, Li G, Wang Z, Liu Y, Li Y, Wang Q. Efficient synthesis of SCF 3-substituted tryptanthrins by a radical tandem cyclization. Org Biomol Chem 2020; 18:1994-2001. [PMID: 32108198 DOI: 10.1039/d0ob00233j] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Herein, we report a new, efficient and atom-economical strategy for the synthesis of SCF3-substituted tryptanthrin derivatives. These previously unreported derivatives were obtained by means of a radical tandem cyclization. The reaction was triggered by addition of a SCF3 radical to a carbon-carbon double bond and involved the formation of a C(sp3)-SCF3 bond, a C(sp2)-C bond, and a C(sp2)-N bond. This method has mild conditions and a wide range of substrates which is particularly useful for the preparation of substituted indolquinazoline derivatives that widely exist in many natural products, but are not easy to obtain by conventional approaches.
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Affiliation(s)
- Jincheng Guo
- State Key Laboratory of Elemento-Organic Chemistry, Research Institute of Elemento-Organic Chemistry, College of Chemistry, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Nankai University, Tianjin 300071, China.
| | - Yanan Hao
- State Key Laboratory of Elemento-Organic Chemistry, Research Institute of Elemento-Organic Chemistry, College of Chemistry, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Nankai University, Tianjin 300071, China.
| | - Gang Li
- State Key Laboratory of Elemento-Organic Chemistry, Research Institute of Elemento-Organic Chemistry, College of Chemistry, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Nankai University, Tianjin 300071, China.
| | - Ziwen Wang
- State Key Laboratory of Elemento-Organic Chemistry, Research Institute of Elemento-Organic Chemistry, College of Chemistry, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Nankai University, Tianjin 300071, China. and Tianjin Key Laboratory of Structure and Performance for Functional Molecules, College of Chemistry, Tianjin Normal University, Tianjin 300387, P. R. China.
| | - Yuxiu Liu
- State Key Laboratory of Elemento-Organic Chemistry, Research Institute of Elemento-Organic Chemistry, College of Chemistry, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Nankai University, Tianjin 300071, China.
| | - Yongqiang Li
- State Key Laboratory of Elemento-Organic Chemistry, Research Institute of Elemento-Organic Chemistry, College of Chemistry, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Nankai University, Tianjin 300071, China.
| | - Qingmin Wang
- State Key Laboratory of Elemento-Organic Chemistry, Research Institute of Elemento-Organic Chemistry, College of Chemistry, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Nankai University, Tianjin 300071, China.
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27
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Li Z, Jiao L, Sun Y, He Z, Wei Z, Liao W. CF
3
SO
2
Na as a Bifunctional Reagent: Electrochemical Trifluoromethylation of Alkenes Accompanied by SO
2
Insertion to Access Trifluoromethylated Cyclic N‐Sulfonylimines. Angew Chem Int Ed Engl 2020; 59:7266-7270. [DOI: 10.1002/anie.202001262] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2020] [Indexed: 11/07/2022]
Affiliation(s)
- Zheng Li
- Department of Organic Chemistry College of Chemistry Jilin University Changchun 130012 P. R. China
| | - Lingcong Jiao
- Department of Organic Chemistry College of Chemistry Jilin University Changchun 130012 P. R. China
| | - Yunhai Sun
- Department of Organic Chemistry College of Chemistry Jilin University Changchun 130012 P. R. China
| | - Zeying He
- Department of Organic Chemistry College of Chemistry Jilin University Changchun 130012 P. R. China
| | - Zhonglin Wei
- Department of Organic Chemistry College of Chemistry Jilin University Changchun 130012 P. R. China
| | - Wei‐Wei Liao
- Department of Organic Chemistry College of Chemistry Jilin University Changchun 130012 P. R. China
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28
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Li Z, Jiao L, Sun Y, He Z, Wei Z, Liao W. CF
3
SO
2
Na as a Bifunctional Reagent: Electrochemical Trifluoromethylation of Alkenes Accompanied by SO
2
Insertion to Access Trifluoromethylated Cyclic N‐Sulfonylimines. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202001262] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Zheng Li
- Department of Organic Chemistry College of Chemistry Jilin University Changchun 130012 P. R. China
| | - Lingcong Jiao
- Department of Organic Chemistry College of Chemistry Jilin University Changchun 130012 P. R. China
| | - Yunhai Sun
- Department of Organic Chemistry College of Chemistry Jilin University Changchun 130012 P. R. China
| | - Zeying He
- Department of Organic Chemistry College of Chemistry Jilin University Changchun 130012 P. R. China
| | - Zhonglin Wei
- Department of Organic Chemistry College of Chemistry Jilin University Changchun 130012 P. R. China
| | - Wei‐Wei Liao
- Department of Organic Chemistry College of Chemistry Jilin University Changchun 130012 P. R. China
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29
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Turner OJ, Hirst DJ, Murphy JA. Hydrogen Atom Transfer‐Mediated Domino Cyclisation Reaction to Access (Spiro)Quinazolinones. Chemistry 2020; 26:3026-3029. [DOI: 10.1002/chem.201905712] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2019] [Indexed: 12/12/2022]
Affiliation(s)
- Oliver J. Turner
- GlaxoSmithKline, Medicines Research Centre Gunnels Wood Road Stevenage Hertfordshire SG1 2NY UK
- Department of Pure and Applied ChemistryUniversity of Strathclyde 295 Cathedral Street Glasgow G11XL UK
| | - David J. Hirst
- GlaxoSmithKline, Medicines Research Centre Gunnels Wood Road Stevenage Hertfordshire SG1 2NY UK
| | - John A. Murphy
- Department of Pure and Applied ChemistryUniversity of Strathclyde 295 Cathedral Street Glasgow G11XL UK
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30
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Atarod M, Safari J. Synergistic Effect between Ultrasound Irradiation and Na
2
CO
3
in
N
‐Acylation Reaction: Applied for the Synthesis of Novel
N
‐Acylcyanamide Derivatives. ChemistrySelect 2020. [DOI: 10.1002/slct.201904793] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Monireh Atarod
- Department of Organic ChemistryUniversity of Kashan Kashan 87317–51167 Iran
| | - Javad Safari
- Department of Organic ChemistryUniversity of Kashan Kashan 87317–51167 Iran
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31
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Zhang S, Weniger F, Kreyenschulte CR, Lund H, Bartling S, Neumann H, Ellinger S, Taeschler C, Beller M. Towards a practical perfluoroalkylation of (hetero)arenes with perfluoroalkyl bromides using cobalt nanocatalysts. Catal Sci Technol 2020. [DOI: 10.1039/c9cy02460c] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This paper report a convenient methodology for perfluoroalkylation including trifluoromethylation of (hetero)arenes with perfluoroalkyl bromides using a specific cobalt-based nanocatalyst.
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Affiliation(s)
- Shaoke Zhang
- Leibniz-Institut für Katalyse an der Universität Rostock e.V
- 18059 Rostock
- Germany
| | - Florian Weniger
- Leibniz-Institut für Katalyse an der Universität Rostock e.V
- 18059 Rostock
- Germany
| | | | - Henrik Lund
- Leibniz-Institut für Katalyse an der Universität Rostock e.V
- 18059 Rostock
- Germany
| | - Stephan Bartling
- Leibniz-Institut für Katalyse an der Universität Rostock e.V
- 18059 Rostock
- Germany
| | - Helfried Neumann
- Leibniz-Institut für Katalyse an der Universität Rostock e.V
- 18059 Rostock
- Germany
| | | | | | - Matthias Beller
- Leibniz-Institut für Katalyse an der Universität Rostock e.V
- 18059 Rostock
- Germany
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32
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Cassé M, Nisole C, Dossmann H, Gimbert Y, Fourquez JM, Haberkorn L, Ollivier C, Fensterbank L. Trifluoromethyl radical triggered radical cyclization of N-benzoyl ynamides leading to isoindolinones. Sci China Chem 2019. [DOI: 10.1007/s11426-019-9627-x] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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33
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Zheng J, Meng Z, Lu D, Zhao D, Chen Q, Yang W. Michael Addition Reactions of Highly Basic Enolates for the Formation of 2‐(Tosylamino)Dihydrochalcones. ASIAN J ORG CHEM 2019. [DOI: 10.1002/ajoc.201900514] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Jing Zheng
- School of Resources Environmental and Chemical EngineeringNanChang University NanChang 330031 China
| | - Zhongrong Meng
- College of ChemistryNanChang University NanChang 330031 China
| | - Doudou Lu
- School of Resources Environmental and Chemical EngineeringNanChang University NanChang 330031 China
| | - Dongxin Zhao
- School of Resources Environmental and Chemical EngineeringNanChang University NanChang 330031 China
| | - Qinfang Chen
- School of Resources Environmental and Chemical EngineeringNanChang University NanChang 330031 China
| | - Weiran Yang
- School of Resources Environmental and Chemical EngineeringNanChang University NanChang 330031 China
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34
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Zhang ZQ, Meng XY, Sheng J, Lan Q, Wang XS. Enantioselective Copper-Catalyzed 1,5-Cyanotrifluoromethylation of Vinylcyclopropanes. Org Lett 2019; 21:8256-8260. [DOI: 10.1021/acs.orglett.9b03012] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Zi-Qi Zhang
- Hefei National Laboratory for Physical Sciences at the Microscale and Department of Chemistry, Center for Excellence in Molecular Synthesis of CAS, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui 230026, China
| | - Xiang-Yu Meng
- Hefei National Laboratory for Physical Sciences at the Microscale and Department of Chemistry, Center for Excellence in Molecular Synthesis of CAS, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui 230026, China
| | - Jie Sheng
- Hefei National Laboratory for Physical Sciences at the Microscale and Department of Chemistry, Center for Excellence in Molecular Synthesis of CAS, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui 230026, China
| | - Quan Lan
- Hefei National Laboratory for Physical Sciences at the Microscale and Department of Chemistry, Center for Excellence in Molecular Synthesis of CAS, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui 230026, China
| | - Xi-Sheng Wang
- Hefei National Laboratory for Physical Sciences at the Microscale and Department of Chemistry, Center for Excellence in Molecular Synthesis of CAS, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui 230026, China
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35
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Wang L, Qi C, Cheng R, Liu H, Xiong W, Jiang H. Direct Access to Trifluoromethyl-Substituted Carbamates from Carbon Dioxide via Copper-Catalyzed Cascade Cyclization of Enynes. Org Lett 2019; 21:7386-7389. [DOI: 10.1021/acs.orglett.9b02698] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Affiliation(s)
- Lu Wang
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, P. R. China
| | - Chaorong Qi
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, P. R. China
- State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou 510640, P. R. China
| | - Ruixiang Cheng
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, P. R. China
| | - Hongjian Liu
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, P. R. China
| | - Wenfang Xiong
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, P. R. China
| | - Huanfeng Jiang
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, P. R. China
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36
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Kawamura S, Sodeoka M. Fluoroalkylation Methods for Synthesizing Versatile Building Blocks. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2019. [DOI: 10.1246/bcsj.20190080] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Shintaro Kawamura
- RIKEN Center for Sustainable Resource Science, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- Synthetic Organic Chemistry Laboratory, RIKEN Cluster for Pioneering Research, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - Mikiko Sodeoka
- RIKEN Center for Sustainable Resource Science, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- Synthetic Organic Chemistry Laboratory, RIKEN Cluster for Pioneering Research, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
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37
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Liu X, Sun K, Chen X, Wang W, Liu Y, Li Q, Peng Y, Qu L, Yu B. Visible‐Light‐Promoted Transition‐Metal‐Free Approach toward Phosphoryl‐Substituted Dihydroisoquinolones
via
Cascade Phosphorylation/Cyclization of
N
‐Allylbenzamides. Adv Synth Catal 2019. [DOI: 10.1002/adsc.201900544] [Citation(s) in RCA: 53] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Xiao‐Ceng Liu
- College of Chemistry and Molecular EngineeringZhengzhou University Zhengzhou 450001 People's Republic of China
| | - Kai Sun
- College of Chemistry and Molecular EngineeringZhengzhou University Zhengzhou 450001 People's Republic of China
| | - Xiao‐Lan Chen
- College of Chemistry and Molecular EngineeringZhengzhou University Zhengzhou 450001 People's Republic of China
| | - Wen‐Fei Wang
- College of Chemistry and Molecular EngineeringZhengzhou University Zhengzhou 450001 People's Republic of China
| | - Yan Liu
- College of Chemistry and Molecular EngineeringZhengzhou University Zhengzhou 450001 People's Republic of China
| | - Qian‐Li Li
- School of Chemistry & Chemical EngineeringLiaocheng University, Liaocheng Shandong 252059 People's Republic of China
| | - Yu‐Yu Peng
- Hunan Provincial Key Laboratory of Materials Protection for Electric Power and TransportationChangsha University of Science and Technology Changsha 410114 People's Republic of China
| | - Ling‐Bo Qu
- College of Chemistry and Molecular EngineeringZhengzhou University Zhengzhou 450001 People's Republic of China
| | - Bing Yu
- College of Chemistry and Molecular EngineeringZhengzhou University Zhengzhou 450001 People's Republic of China
- Hunan Provincial Key Laboratory of Materials Protection for Electric Power and TransportationChangsha University of Science and Technology Changsha 410114 People's Republic of China
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38
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[4 + 3]-Cycloaddition of aza-o-quinone methides and azomethine imines to make 1,2,4-triazepines. Tetrahedron Lett 2019. [DOI: 10.1016/j.tetlet.2019.05.038] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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39
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He D, Zhuang Z, Wang X, Li J, Li J, Wu W, Zhao Z, Jiang H, Tang BZ. Assembly of 1 H-isoindole derivatives by selective carbon-nitrogen triple bond activation: access to aggregation-induced emission fluorophores for lipid droplet imaging. Chem Sci 2019; 10:7076-7081. [PMID: 31588275 PMCID: PMC6677114 DOI: 10.1039/c9sc01035a] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2019] [Accepted: 06/07/2019] [Indexed: 12/14/2022] Open
Abstract
A method of selectively activating carbon–nitrogen triple bonds has been developed to access 1H-isoindole AIE fluorophores for lipid droplet imaging.
A novel strategy has been established to assemble a series of single (Z)- or (E)-1H-isoindole derivatives through selectively and sequentially activating carbon–nitrogen triple bonds in a multicomponent system containing various nucleophilic and electrophilic sites. The reaction provides efficient access to structurally unique fluorophores with aggregation-induced emission characteristics. These new fluorophores show fluorescence wavelengths and efficiencies that can be modulated and have excellent potential to specifically light up lipid droplets (LDs) in living cells with bright fluorescence, low cytotoxicity and better photostability than commercially available LD-specific dyes.
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Affiliation(s)
- Dandan He
- Key Laboratory of Functional Molecular Engineering of Guang Dong Province , School of Chemistry and Chemical Engineering , South China University of Technology , Guangzhou 510641 , P. R. China . ;
| | - Zeyan Zhuang
- State Key Laboratory of Luminescent Materials and Devices , Center for Aggregation-Induced Emission , South China University of Technology , Guangzhou 510640 , China .
| | - Xu Wang
- Key Laboratory of Functional Molecular Engineering of Guang Dong Province , School of Chemistry and Chemical Engineering , South China University of Technology , Guangzhou 510641 , P. R. China . ;
| | - Jiawei Li
- Key Laboratory of Functional Molecular Engineering of Guang Dong Province , School of Chemistry and Chemical Engineering , South China University of Technology , Guangzhou 510641 , P. R. China . ;
| | - Jianxiao Li
- Key Laboratory of Functional Molecular Engineering of Guang Dong Province , School of Chemistry and Chemical Engineering , South China University of Technology , Guangzhou 510641 , P. R. China . ;
| | - Wanqing Wu
- Key Laboratory of Functional Molecular Engineering of Guang Dong Province , School of Chemistry and Chemical Engineering , South China University of Technology , Guangzhou 510641 , P. R. China . ; .,State Key Laboratory of Luminescent Materials and Devices , Center for Aggregation-Induced Emission , South China University of Technology , Guangzhou 510640 , China .
| | - Zujin Zhao
- State Key Laboratory of Luminescent Materials and Devices , Center for Aggregation-Induced Emission , South China University of Technology , Guangzhou 510640 , China .
| | - Huanfeng Jiang
- Key Laboratory of Functional Molecular Engineering of Guang Dong Province , School of Chemistry and Chemical Engineering , South China University of Technology , Guangzhou 510641 , P. R. China . ;
| | - Ben Zhong Tang
- State Key Laboratory of Luminescent Materials and Devices , Center for Aggregation-Induced Emission , South China University of Technology , Guangzhou 510640 , China . .,Department of Chemistry , Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction , The Hong Kong University of Science & Technology , Kowloon , Hong Kong , China
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40
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Zhang Z, Zhu L, Li C. Copper‐Catalyzed Carbotrifluoromethylation of Unactivated Alkenes Driven by Trifluoromethylation of Alkyl Radicals. CHINESE J CHEM 2019. [DOI: 10.1002/cjoc.201900075] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Zhenzhen Zhang
- Key Laboratory of Organofluorine Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic ChemistryChinese Academy of Sciences, 345 Lingling Road Shanghai 200032 China
| | - Lin Zhu
- Key Laboratory of Organofluorine Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic ChemistryChinese Academy of Sciences, 345 Lingling Road Shanghai 200032 China
| | - Chaozhong Li
- Key Laboratory of Organofluorine Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic ChemistryChinese Academy of Sciences, 345 Lingling Road Shanghai 200032 China
- School of Materials and Chemical EngineeringNingbo University of Technology, No. 201 Fenghua Road, Ningbo Zhejiang 315211 China
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41
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Wang J, Sun K, Chen X, Chen T, Liu Y, Qu L, Zhao Y, Yu B. An External-Catalyst-Free Trifluoromethylation/Cyclization Strategy To Access Trifluoromethylated-Dihydroisoquinolinones/Indolines with Togni Reagent II. Org Lett 2019; 21:1863-1867. [DOI: 10.1021/acs.orglett.9b00465] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Junchao Wang
- College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou 450001, China
| | - Kai Sun
- College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou 450001, China
| | - Xiaolan Chen
- College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou 450001, China
- The Key Laboratory for Chemical Biology of Fujian Province, Xiamen University, Xiamen 361005, China
| | - Tong Chen
- High and New Technology Research Center of Henan Academy of Sciences, Zhengzhou 450001, China
| | - Yan Liu
- College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou 450001, China
| | - Lingbo Qu
- College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou 450001, China
| | - Yufen Zhao
- College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou 450001, China
- The Key Laboratory for Chemical Biology of Fujian Province, Xiamen University, Xiamen 361005, China
| | - Bing Yu
- College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou 450001, China
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42
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Qin XY, He L, Li J, Hao WJ, Tu SJ, Jiang B. Regioselective synthesis of polycyclic sulfones via radical-induced three-component bicyclization cascades. Chem Commun (Camb) 2019; 55:3227-3230. [DOI: 10.1039/c9cc00324j] [Citation(s) in RCA: 65] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
New radical-triggered three-component bicyclization cascades of 2-alkynylaryldiazonium tetrafluoroborates with a sulfur dioxide surrogate DABCO·(SO2)2 and internal alkynes have been reported for the first time, leading to 49 examples of polycyclic sulfones with moderate to good yields.
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Affiliation(s)
- Xiao-Yan Qin
- School of Chemistry & Materials Science
- Jiangsu Normal University
- Xuzhou
- P. R. China
| | - Long He
- School of Chemistry & Materials Science
- Jiangsu Normal University
- Xuzhou
- P. R. China
| | - Jing Li
- School of Chemistry & Materials Science
- Jiangsu Normal University
- Xuzhou
- P. R. China
| | - Wen-Juan Hao
- School of Chemistry & Materials Science
- Jiangsu Normal University
- Xuzhou
- P. R. China
| | - Shu-Jiang Tu
- School of Chemistry & Materials Science
- Jiangsu Normal University
- Xuzhou
- P. R. China
| | - Bo Jiang
- School of Chemistry & Materials Science
- Jiangsu Normal University
- Xuzhou
- P. R. China
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43
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Liu XC, Sun K, Lv QY, Chen XL, Sun YQ, Peng YY, Qu LB, Yu B. Silver-mediated radical phosphorylation/cyclization of N-allylbenzamides to access phosphoryl-substituted dihydroisoquinolones. NEW J CHEM 2019. [DOI: 10.1039/c9nj02833a] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
A silver-mediated phosphorylation/cyclization of N-allylbenzamides with phosphine oxides for the synthesis of phosphoryl-substituted dihydroisoquinolones was developed.
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Affiliation(s)
- Xiao-Ceng Liu
- College of Chemistry
- Zhengzhou University
- Zhengzhou 450001
- China
| | - Kai Sun
- College of Chemistry
- Zhengzhou University
- Zhengzhou 450001
- China
| | - Qi-Yan Lv
- College of Chemistry
- Zhengzhou University
- Zhengzhou 450001
- China
- Henan Nonferrous Metals Geological Exploration Institute
| | - Xiao-Lan Chen
- College of Chemistry
- Zhengzhou University
- Zhengzhou 450001
- China
| | - Yuan-Qiang Sun
- College of Chemistry
- Zhengzhou University
- Zhengzhou 450001
- China
| | - Yu-Yu Peng
- Hunan Provincial Key Laboratory of Materials Protection for Electric Power and Transportation
- Changsha University of Science & Technology
- Changsha 410114
- China
| | - Ling-Bo Qu
- College of Chemistry
- Zhengzhou University
- Zhengzhou 450001
- China
| | - Bing Yu
- College of Chemistry
- Zhengzhou University
- Zhengzhou 450001
- China
- Henan Nonferrous Metals Geological Exploration Institute
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44
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Jin JK, Zhang FL, Zhao Q, Lu JA, Wang YF. Synthesis of Diverse Boron-Handled N-Heterocycles via Radical Borylative Cyclization of N-Allylcyanamides. Org Lett 2018; 20:7558-7562. [PMID: 30427202 DOI: 10.1021/acs.orglett.8b03303] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A synthetic method based on radical borylation/cyclization cascades of N-allylcyanamides was developed to construct diverse boron-substituted N-heterocycles. In the reaction process, the N-heterocyclic carbene-boryl radical underwent a chemo- and regioselective addition to the alkene moiety, followed by cyclization with the N-cyano group. The resulting amide-iminyl radical intermediates underwent further reactions to afford various boron-tethered N-heterocyclic molecules. Further transformations to access synthetically useful building blocks were also demonstrated.
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Affiliation(s)
- Ji-Kang Jin
- Hefei National Laboratory for Physical Sciences at the Microscale, Center for Excellence in Molecular Synthesis of CAS, and Department of Chemistry , University of Science and Technology of China , Hefei 230026 , China
| | - Feng-Lian Zhang
- Hefei National Laboratory for Physical Sciences at the Microscale, Center for Excellence in Molecular Synthesis of CAS, and Department of Chemistry , University of Science and Technology of China , Hefei 230026 , China
| | - Qiang Zhao
- Hefei National Laboratory for Physical Sciences at the Microscale, Center for Excellence in Molecular Synthesis of CAS, and Department of Chemistry , University of Science and Technology of China , Hefei 230026 , China
| | - Jun-An Lu
- Hefei National Laboratory for Physical Sciences at the Microscale, Center for Excellence in Molecular Synthesis of CAS, and Department of Chemistry , University of Science and Technology of China , Hefei 230026 , China
| | - Yi-Feng Wang
- Hefei National Laboratory for Physical Sciences at the Microscale, Center for Excellence in Molecular Synthesis of CAS, and Department of Chemistry , University of Science and Technology of China , Hefei 230026 , China.,State Key Laboratory of Elemento-Organic Chemistry , Nankai University , Tianjin 300071 , China
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45
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Turner OJ, Murphy JA, Hirst DJ, Talbot EPA. Hydrogen Atom Transfer-Mediated Cyclisations of Nitriles. Chemistry 2018; 24:18658-18662. [PMID: 30341926 DOI: 10.1002/chem.201805236] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2018] [Indexed: 01/06/2023]
Abstract
Hydrogen atom transfer-mediated intramolecular C-C coupling reactions between alkenes and nitriles, using PhSiH3 and catalytic Fe(acac)3 , are described. This introduces a new strategic bond disconnection for ring-closing reactions, forming ketones via imine intermediates. Of note is the scope of the reaction, including formation of sterically hindered ketones, spirocycles and fused cyclic systems.
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Affiliation(s)
- Oliver J Turner
- GlaxoSmithKline, Medicines Research Centre, Gunnels Wood Road, Stevenage, Hertfordshire, SG1 2NY, UK.,Department of Pure and Applied Chemistry, University of Strathclyde, 295 Cathedral Street, Glasgow, G1 1XL, UK
| | - John A Murphy
- Department of Pure and Applied Chemistry, University of Strathclyde, 295 Cathedral Street, Glasgow, G1 1XL, UK
| | - David J Hirst
- GlaxoSmithKline, Medicines Research Centre, Gunnels Wood Road, Stevenage, Hertfordshire, SG1 2NY, UK
| | - Eric P A Talbot
- GlaxoSmithKline, Medicines Research Centre, Gunnels Wood Road, Stevenage, Hertfordshire, SG1 2NY, UK.,Present address: Pharmaron, Hertford Rd, Hoddesdon, EN11 9BU, UK
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46
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47
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Hou H, Li H, Xu Y, Song C, Wang C, Shi Y, Han Y, Yan C, Zhu S. Visible-Light-Mediated Chlorosulfonylative Cyclizations of 1,6-Enynes. Adv Synth Catal 2018. [DOI: 10.1002/adsc.201801157] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Hong Hou
- School of Chemistry and Chemical Engineering; Yangzhou University, Yangzhou, Jiangsu; People's Republic of China
| | - Hengxue Li
- School of Chemistry and Chemical Engineering; Yangzhou University, Yangzhou, Jiangsu; People's Republic of China
| | - Yue Xu
- School of Chemistry and Chemical Engineering; Yangzhou University, Yangzhou, Jiangsu; People's Republic of China
| | - Chuanqi Song
- School of Chemistry and Chemical Engineering; Yangzhou University, Yangzhou, Jiangsu; People's Republic of China
| | - Chunling Wang
- School of Chemistry and Chemical Engineering; Yangzhou University, Yangzhou, Jiangsu; People's Republic of China
| | - Yaocheng Shi
- School of Chemistry and Chemical Engineering; Yangzhou University, Yangzhou, Jiangsu; People's Republic of China
| | - Ying Han
- School of Chemistry and Chemical Engineering; Yangzhou University, Yangzhou, Jiangsu; People's Republic of China
| | - Chaoguo Yan
- School of Chemistry and Chemical Engineering; Yangzhou University, Yangzhou, Jiangsu; People's Republic of China
| | - Shaoqun Zhu
- School of Chemistry and Chemical Engineering; Yangzhou University, Yangzhou, Jiangsu; People's Republic of China
- School of Chemistry; Laboratories for Sustainable Chemistry; University of Nottingham, Nottingham; United Kingdom
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48
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Tang L, Yang Z, Chang X, Jiao J, Ma X, Rao W, Zhou Q, Zheng L. K 2S 2O 8-Mediated Selective Trifluoromethylacylation and Trifluoromethylarylation of Alkenes under Transition-Metal-Free Conditions: Synthetic Scope and Mechanistic Studies. Org Lett 2018; 20:6520-6525. [PMID: 30289263 DOI: 10.1021/acs.orglett.8b02846] [Citation(s) in RCA: 53] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A practical and efficient method for selective intramolecular radical trifluoromethylacylation and -arylation of alkenes with inexpensive CF3SO2Na and K2S2O8 in aqueous media has been developed, respectively, affording the highly chemoselective synthesis of CF3-functionalized chroman-4-ones and chromanes in satisfactory yields. Control experiments and DFT calculations indicate that the CF3SO2Na/K2S2O8 system is capable of trifluoromethylating the substrate of alkenes without a transition metal catalyst and the oxidation of CF3SO2Na to ·CF3 by K2S2O8 is involved in the rate-determining step.
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Affiliation(s)
- Lin Tang
- College of Chemistry and Chemical Engineering , Xinyang Normal University , Xinyang , Henan 464000 , China.,Henan Province Key Laboratory of Utilization of Non-metallic Mineral in the Sourth of Henan , Xinyang , Henan 464000 , China
| | - Zhen Yang
- College of Chemistry and Chemical Engineering , Xinyang Normal University , Xinyang , Henan 464000 , China
| | - Xueping Chang
- College of Chemistry and Chemical Engineering , Xinyang Normal University , Xinyang , Henan 464000 , China
| | - Jingchao Jiao
- College of Chemistry and Chemical Engineering , Xinyang Normal University , Xinyang , Henan 464000 , China
| | - Xiantao Ma
- College of Chemistry and Chemical Engineering , Xinyang Normal University , Xinyang , Henan 464000 , China
| | - Weihao Rao
- College of Chemistry and Chemical Engineering , Xinyang Normal University , Xinyang , Henan 464000 , China
| | - Qiuju Zhou
- College of Chemistry and Chemical Engineering , Xinyang Normal University , Xinyang , Henan 464000 , China
| | - Lingyun Zheng
- College of Chemistry and Chemical Engineering , Xinyang Normal University , Xinyang , Henan 464000 , China
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49
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Huang MH, Hao WJ, Jiang B. Recent Advances in Radical-Enabled Bicyclization and Annulation/1,n
-Bifunctionalization Reactions. Chem Asian J 2018; 13:2958-2977. [DOI: 10.1002/asia.201801119] [Citation(s) in RCA: 107] [Impact Index Per Article: 17.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2018] [Indexed: 11/06/2022]
Affiliation(s)
- Min-Hua Huang
- School of Chemistry & Materials Science; Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials; Jiangsu Normal University; Xuzhou 221116 P. R. China
- Biotechnology and Pharmaceutical Engineering; Nanjing Tech University; Nanjing 210009, Jiangsu P. R. China
| | - Wen-Juan Hao
- School of Chemistry & Materials Science; Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials; Jiangsu Normal University; Xuzhou 221116 P. R. China
| | - Bo Jiang
- School of Chemistry & Materials Science; Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials; Jiangsu Normal University; Xuzhou 221116 P. R. China
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50
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Xu ZQ, Wang C, Li L, Duan L, Li YM. Construction of 3,4-Dihydroisoquinolinones and Indanones via DTBP-Promoted Oxidative Coupling of N-Allylbenzamides with Aromatic Aldehydes. J Org Chem 2018; 83:9718-9728. [DOI: 10.1021/acs.joc.8b01242] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Zhong-Qi Xu
- State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy and Tianjin Key Laboratory of Molecular Drug Research, Nankai University, Tianjin, People’s Republic of China
| | - Chao Wang
- State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy and Tianjin Key Laboratory of Molecular Drug Research, Nankai University, Tianjin, People’s Republic of China
| | - Lin Li
- State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy and Tianjin Key Laboratory of Molecular Drug Research, Nankai University, Tianjin, People’s Republic of China
| | - Lili Duan
- State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy and Tianjin Key Laboratory of Molecular Drug Research, Nankai University, Tianjin, People’s Republic of China
| | - Yue-Ming Li
- State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy and Tianjin Key Laboratory of Molecular Drug Research, Nankai University, Tianjin, People’s Republic of China
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