1
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Zhang G, Zhang Y, Li P, Zhou C, Wang M, Wang L. Metal-Free Synthesis of 2 H-Indazole Skeletons by Photochemistry or Thermochemistry. J Org Chem 2023; 88:12341-12356. [PMID: 37582245 DOI: 10.1021/acs.joc.3c01091] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/17/2023]
Abstract
A simple and tuned synthesis of a 2H-indazole skeleton under metal-free conditions was developed. Under visible-light irradiation at room temperature, 2-((aryl/alkyl/H)ethynyl))aryltriazenes reacted with arylsulfinic acids to afford 3-functionalized 2H-indazoles without extra photocatalyst via an electron donor-acceptor complex. In the presence of arylsulfinic acid, 2-(ethynyl)aryltriazenes underwent an intramolecular oxidation/cyclization to provide 2H-indazole-3-carbaldehydes at 50 °C in air.
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Affiliation(s)
- Gan Zhang
- Key Laboratory of Green and Precise Synthetic Chemistry and Applications, Ministry of Education and Department of Chemistry, Huaibei Normal University, Huaibei, Anhui 235000, P. R. China
| | - Yicheng Zhang
- Key Laboratory of Green and Precise Synthetic Chemistry and Applications, Ministry of Education and Department of Chemistry, Huaibei Normal University, Huaibei, Anhui 235000, P. R. China
| | - Pinhua Li
- Key Laboratory of Green and Precise Synthetic Chemistry and Applications, Ministry of Education and Department of Chemistry, Huaibei Normal University, Huaibei, Anhui 235000, P. R. China
| | - Chao Zhou
- Key Laboratory of Green and Precise Synthetic Chemistry and Applications, Ministry of Education and Department of Chemistry, Huaibei Normal University, Huaibei, Anhui 235000, P. R. China
| | - Min Wang
- Key Laboratory of Green and Precise Synthetic Chemistry and Applications, Ministry of Education and Department of Chemistry, Huaibei Normal University, Huaibei, Anhui 235000, P. R. China
| | - Lei Wang
- Key Laboratory of Green and Precise Synthetic Chemistry and Applications, Ministry of Education and Department of Chemistry, Huaibei Normal University, Huaibei, Anhui 235000, P. R. China
- Advanced Research Institute and School of Pharmaceutical Sciences, Taizhou University, Taizhou, Zhejiang 318000, P. R. China
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Scienes, Shanghai 200032, P. R. China
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2
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Bera SK, Maharana RR, Samanta K, Mal P. CBr 4 catalyzed activation of α,β-unsaturated ketones. Org Biomol Chem 2022; 20:7085-7091. [PMID: 36039810 DOI: 10.1039/d2ob01223e] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We have shown here that weak interactions such as halogen bonding (XB) can be used to activate the carbonyl group of α,β-unsaturated ketones. Carbon tetrabromide (CBr4) has been used as the sole reagent for the selective synthesis of flavanones and aza-flavanones from the corresponding 2'-hydroxy- and 2'-aminochalcones under metal-free and additive-free conditions. DFT calculations support the catalytic role of XB between the oxygen of chalcones and CBr4 in these reactions.
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Affiliation(s)
- Shyamal Kanti Bera
- School of Chemical Sciences, National Institute of Science Education and Research (NISER), An OCC of Homi Bhabha National Institute, Bhubaneswar, PO Bhimpur-Padanpur, Via Jatni, District Khurda, Odisha 752050, India.
| | - Rajat Rajiv Maharana
- School of Basic Sciences, Indian Institute of Technology Bhubaneswar, Argul, Odisha 752050, India.
| | - Kousik Samanta
- School of Basic Sciences, Indian Institute of Technology Bhubaneswar, Argul, Odisha 752050, India.
| | - Prasenjit Mal
- School of Chemical Sciences, National Institute of Science Education and Research (NISER), An OCC of Homi Bhabha National Institute, Bhubaneswar, PO Bhimpur-Padanpur, Via Jatni, District Khurda, Odisha 752050, India.
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3
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Mal S, Malik U, Mahapatra M, Mishra A, Pal D, Paidesetty SK. A review on synthetic strategy, molecular pharmacology of indazole derivatives, and their future perspective. Drug Dev Res 2022; 83:1469-1504. [PMID: 35971890 DOI: 10.1002/ddr.21979] [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: 04/23/2022] [Revised: 07/04/2022] [Accepted: 07/22/2022] [Indexed: 11/09/2022]
Abstract
With different nitrogen-containing heterocyclic moieties, Indazoles earn one of the places among the top investigated molecules in medicinal research. Indazole, an important fused aromatic heterocyclic system containing benzene and pyrazole ring with a chemical formula of C7 H6 N2 , is also called benzopyrazole. Indazoles consist of three tautomeric forms in which 1H-tautomers (indazoles) and 2H-tautomers (isoindazoles) exist in all phases. The tautomerism in indazoles greatly influences synthesis, reactivity, physical and even the biological properties of indazoles. The thermodynamic internal energy calculation of these tautomers points view 1H-indazole as the predominant and stable form over 2H-indazole. The natural source of indazole is limited and exists in alkaloidal nature (i.e., nigellidine, nigeglanine, nigellicine, etc.) found from Nigella plants. Some of the FDA-approved drugs like Axitinib, Entrectinib, Niraparib, Benzydamine, and Granisetron are being used to treat renal cell cancer, non-small cell lung cancer (NSCLC), epithelial ovarian cancer, chronic inflammation, chemotherapy-induced nausea, vomiting, and many more uses. Besides all these advantages regarding its biological activity, the main issue about indazoles is the less abundance in plant sources, and their synthetic derivatives also often face problems with low yield. In this review article, we discuss its chemistry, tautomerism along with their effects, different schematics for the synthesis of indazole derivatives, and their different biological activities.
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Affiliation(s)
- Suvadeep Mal
- Department of Pharmaceutical Chemistry, Siksha 'O' Anusandhan University (Deemed to be University), Bhubaneswar, Odisha, India
| | - Udita Malik
- Department of Pharmacy, Guru Ghasidas Vishwavidyalaya (A Central University), Bilaspur, Chhattisgarh, India
| | - Monalisa Mahapatra
- Department of Pharmaceutical Chemistry, Siksha 'O' Anusandhan University (Deemed to be University), Bhubaneswar, Odisha, India
| | | | - Dilipkumar Pal
- Department of Pharmacy, Guru Ghasidas Vishwavidyalaya (A Central University), Bilaspur, Chhattisgarh, India
| | - Sudhir K Paidesetty
- Department of Pharmaceutical Chemistry, Siksha 'O' Anusandhan University (Deemed to be University), Bhubaneswar, Odisha, India
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4
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Steverlynck J, Sitdikov R, Rueping M. The Deuterated "Magic Methyl" Group: A Guide to Site-Selective Trideuteromethyl Incorporation and Labeling by Using CD 3 Reagents. Chemistry 2021; 27:11751-11772. [PMID: 34076925 PMCID: PMC8457246 DOI: 10.1002/chem.202101179] [Citation(s) in RCA: 34] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2021] [Indexed: 12/12/2022]
Abstract
In the field of medicinal chemistry, the precise installation of a trideuteromethyl group is gaining ever-increasing attention. Site-selective incorporation of the deuterated "magic methyl" group can provide profound pharmacological benefits and can be considered an important tool for drug optimization and development. This review provides a structured overview, according to trideuteromethylation reagent, of currently established methods for site-selective trideuteromethylation of carbon atoms. In addition to CD3 , the selective introduction of CD2 H and CDH2 groups is also considered. For all methods, the corresponding mechanism and scope are discussed whenever reported. As such, this review can be a starting point for synthetic chemists to further advance trideuteromethylation methodologies. At the same time, this review aims to be a guide for medicinal chemists, offering them the available C-CD3 formation strategies for the preparation of new or modified drugs.
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Affiliation(s)
- Joost Steverlynck
- Kaust Catalysis Center (KCC)King Abdullah University Science and Technology (KAUST)Thuwal23955-6900Saudi Arabia
| | - Ruzal Sitdikov
- Kaust Catalysis Center (KCC)King Abdullah University Science and Technology (KAUST)Thuwal23955-6900Saudi Arabia
| | - Magnus Rueping
- Kaust Catalysis Center (KCC)King Abdullah University Science and Technology (KAUST)Thuwal23955-6900Saudi Arabia
- Institute for Experimental Molecular ImagingRWTH Aachen UniversityForckenbeckstrasse 5552074Aachen
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5
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Jin GQ, Gao WX, Zhou YB, Liu MC, Wu HY. Efficient synthesis of 2-aryl-2H-indazoles by base-catalyzed benzyl C-H deprotonation and cyclization. Chem Commun (Camb) 2020; 56:14617-14620. [PMID: 33151211 DOI: 10.1039/d0cc05862a] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
A straightforward and efficient method for the preparation of 2-aryl-2H-indazoles from ortho-alkyl substituted azoxybenzenes is presented. The reaction proceeds through base-catalyzed benzyl C-H deprotonation and cyclization to afford 2-aryl-2H-indazoles in good yields. This synthetic strategy can be applied to the construction of several fluorescent and bioactive molecules.
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Affiliation(s)
- Guo-Qing Jin
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou, 325035, China.
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6
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Wang Y, Su P. Why Can Cationic Halogen Bond Donors Activate the Ritter-Type Solvolysis of Benzhydryl Bromide but Cationic Hydrogen Bond Donors Can Not? ACS OMEGA 2020; 5:21862-21872. [PMID: 32905280 PMCID: PMC7469379 DOI: 10.1021/acsomega.0c03000] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/22/2020] [Accepted: 08/13/2020] [Indexed: 05/27/2023]
Abstract
It is found by experiment that the cationic halogen bond donors (cationic iodoimidazolium compounds) can activate the Ritter-type solvolysis of benzhydryl bromide, while the cationic hydrogen bond donors (cationic imidazolium compounds) could not. To understand the activation mechanism, various noncovalent interactions between benzhydryl bromide and a series of activators in solution, including halogen bond, hydrogen bond, lone pair···π/π+, and C-H···π/π+, were explored theoretically. Our study revealed that the activation difference can be contributed by the variation of the noncovalent interactions. For halogen bond donors, the successful activation is attributed by halogen bond and lone pair···π. The halogen bonds mainly provide the stabilization energy of the ion-pair complex with the help of lone pair···π. For hydrogen-bond donors, the contribution of the hydrogen bond is unable to compensate the like-charge repulsion arising from the generation of the carbocation, leading to the unsuccessful activation. In general, lone pair···π makes a difference.
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Affiliation(s)
- Yueyan Wang
- The State Key Laboratory
of Physical Chemistry of Solid Surfaces, Fujian Provincial Key Laboratory
of Theoretical and Computational Chemistry, and College of Chemistry
and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Peifeng Su
- The State Key Laboratory
of Physical Chemistry of Solid Surfaces, Fujian Provincial Key Laboratory
of Theoretical and Computational Chemistry, and College of Chemistry
and Chemical Engineering, Xiamen University, Xiamen 361005, China
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7
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Raut S, Tidke A, Dhotre B, Arif PM. Different Strategies to the Synthesis of Indazole and its Derivatives: A Review. MINI-REV ORG CHEM 2020. [DOI: 10.2174/1570193x16666190430160324] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
In this review, works of various researchers working on the synthesis of indazole and their related compound are cited. The review comprises of methodologies for the synthesis of 1H and 2H indazole derivatives, along with some pharmacological activities. In this review, research papers published in various peer-reviewed journals between the year 2000 and year 2017 are enlisted in alphabetical order.
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Affiliation(s)
- Santosh Raut
- Maulana Azad College and Research Center, Rouza Bagh, Aurangabad (M.S.), India
| | - Atul Tidke
- Maulana Azad College and Research Center, Rouza Bagh, Aurangabad (M.S.), India
| | | | - Pathan Mohd Arif
- Maulana Azad College and Research Center, Rouza Bagh, Aurangabad (M.S.), India
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8
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Jayram J, Xulu BA, Jeena V. Iodine/DMSO promoted oxidation of benzylic Csp3–H bonds to diketones – A mechanistic investigation. Tetrahedron 2019. [DOI: 10.1016/j.tet.2019.130617] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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9
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Ghosh S, Chattopadhyay SK. Metal‐Free Synthesis of 4‐Aryl‐2‐quinolone Derivatives by Iodine‐Mediated Intramolecular C−H Amidation. Adv Synth Catal 2019. [DOI: 10.1002/adsc.201900530] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Subhankar Ghosh
- Department of ChemistryUniversity of Kalyani, Kalyani- 741235 WB India
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10
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Kondo M, Takizawa S, Jiang Y, Sasai H. Room-Temperature, Metal-Free, and One-Pot Preparation of 2H-Indazoles through a Mills Reaction and Cyclization Sequence. Chemistry 2019; 25:9866-9869. [PMID: 31150138 DOI: 10.1002/chem.201902242] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2019] [Indexed: 11/05/2022]
Abstract
The Mills reaction and cyclization of readily available 2-aminobenzyl alcohols and nitrosobenzenes using thionyl bromide provided 2H-indazoles in up to 88 % yields. In the metal-free process, acetic acid played a crucial role for the both Mills reaction and cyclization. A brominated 2H-indazole could also be obtained through the one-pot sequence.
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Affiliation(s)
- Masaru Kondo
- The Institute of Scientific and Industrial Research (ISIR), Osaka University, Mihogaoka, Ibaraki-shi, Osaka, 567-0047, Japan
| | - Shinobu Takizawa
- The Institute of Scientific and Industrial Research (ISIR), Osaka University, Mihogaoka, Ibaraki-shi, Osaka, 567-0047, Japan.,Artificial Intelligence Research Center, ISIR, Osaka University, Osaka, 567-0047, Japan
| | - Yuzhao Jiang
- The Institute of Scientific and Industrial Research (ISIR), Osaka University, Mihogaoka, Ibaraki-shi, Osaka, 567-0047, Japan
| | - Hiroaki Sasai
- The Institute of Scientific and Industrial Research (ISIR), Osaka University, Mihogaoka, Ibaraki-shi, Osaka, 567-0047, Japan
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11
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Zhang R, Liu Z, Peng Q, Zhou Y, Xu L, Pan X. Access to 2-substituted-2H-indazoles via a copper-catalyzed regioselective cross-coupling reaction. Org Biomol Chem 2019; 16:1816-1822. [PMID: 29479627 DOI: 10.1039/c8ob00128f] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A CuCl catalyzed C-N cross-coupling reaction using commercially available 1H-indazoles with diaryliodonium salts is described. The methodology features ample structural versatility, affording 2-substituted-2H-indazole in good yields and complete N(2)-regiocontrol. Furthermore, the utility of the reaction was demonstrated in the synthesis of a known estrogen receptor β agonist. Mechanistic studies using density functional theory calculations suggested that the complete regioselectivity can be attributed to the only weak base TfO- in our system which could not deprotonate indazoles, and the catalyst oxidation process would be the rate-determining step.
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Affiliation(s)
- Rong Zhang
- School of Perfume and Aroma Technology, Shanghai Institute of Technology, 100 Haiquan Road, Shanghai, 201418, China
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12
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Jayram J, Jeena V. An iodine/DMSO-catalyzed sequential one-pot approach to 2,4,5-trisubstituted-1 H-imidazoles from α-methylene ketones. RSC Adv 2018; 8:37557-37563. [PMID: 35558600 PMCID: PMC9089320 DOI: 10.1039/c8ra07238h] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2018] [Accepted: 11/01/2018] [Indexed: 01/08/2023] Open
Abstract
A sequential one-pot approach to 2,4,5-trisubstituted imidazoles has been developed from α-methylene ketones and aldehydes. This methodology employs air-moisture stable reaction conditions and an inexpensive iodine/DMSO system affording a diverse range of known and novel (substrate scope) 2,4,5-trisubstituted imidazoles in moderate to excellent yields. The iodine/DMSO system was extended to the domino convergent synthesis of two functionalized intermediates, benzil and benzaldehyde, to produce the final product.
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Affiliation(s)
- Janeeka Jayram
- School of Chemistry and Physics, University of KwaZulu-Natal Scottsville Pietermaritzburg 3209 South Africa
| | - Vineet Jeena
- School of Chemistry and Physics, University of KwaZulu-Natal Scottsville Pietermaritzburg 3209 South Africa
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13
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Zhang SG, Liang CG, Zhang WH. Recent Advances in Indazole-Containing Derivatives: Synthesis and Biological Perspectives. Molecules 2018; 23:E2783. [PMID: 30373212 PMCID: PMC6278422 DOI: 10.3390/molecules23112783] [Citation(s) in RCA: 105] [Impact Index Per Article: 17.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2018] [Revised: 10/14/2018] [Accepted: 10/24/2018] [Indexed: 02/07/2023] Open
Abstract
Indazole-containing derivatives represent one of the most important heterocycles in drug molecules. Diversely substituted indazole derivatives bear a variety of functional groups and display versatile biological activities; hence, they have gained considerable attention in the field of medicinal chemistry. This review aims to summarize the recent advances in various methods for the synthesis of indazole derivatives. The current developments in the biological activities of indazole-based compounds are also presented.
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Affiliation(s)
- Shu-Guang Zhang
- Jiangsu Key Laboratory of Pesticide Science, College of Sciences, Nanjing Agricultural University, Nanjing 210095, China.
| | - Chao-Gen Liang
- Jiangsu Key Laboratory of Pesticide Science, College of Sciences, Nanjing Agricultural University, Nanjing 210095, China.
| | - Wei-Hua Zhang
- Jiangsu Key Laboratory of Pesticide Science, College of Sciences, Nanjing Agricultural University, Nanjing 210095, China.
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14
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Son JY, Kim H, Baek Y, Um K, Ko GH, Han GU, Han SH, Lee K, Lee PH. Tosyl Hydrazine-Promoted Tandem Condensation and Cyclization of Acyl Azobenzenes Enabling Access to 2H
-Indazoles under Metal-Free Aerobic Conditions. Adv Synth Catal 2018. [DOI: 10.1002/adsc.201801055] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Jeong-Yu Son
- Department of Chemistry; Kangwon National University; Chuncheon 24341 Republic of Korea
| | - Hyunseok Kim
- Department of Chemistry; Kangwon National University; Chuncheon 24341 Republic of Korea
| | - Yonghyeon Baek
- Department of Chemistry; Kangwon National University; Chuncheon 24341 Republic of Korea
| | - Kyusik Um
- Department of Chemistry; Kangwon National University; Chuncheon 24341 Republic of Korea
| | - Gi Hoon Ko
- Department of Chemistry; Kangwon National University; Chuncheon 24341 Republic of Korea
| | - Gi Uk Han
- Department of Chemistry; Kangwon National University; Chuncheon 24341 Republic of Korea
| | - Sang Hoon Han
- Department of Chemistry; Kangwon National University; Chuncheon 24341 Republic of Korea
| | - Kooyeon Lee
- Department of Bio-Health Technology; Kangwon National University; Chuncheon 24341 Republic of Korea
| | - Phil Ho Lee
- Department of Chemistry; Kangwon National University; Chuncheon 24341 Republic of Korea
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15
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Dohi T, Ueda S, Iwasaki K, Tsunoda Y, Morimoto K, Kita Y. Selective carboxylation of reactive benzylic C-H bonds by a hypervalent iodine(III)/inorganic bromide oxidation system. Beilstein J Org Chem 2018; 14:1087-1094. [PMID: 29977380 PMCID: PMC6009330 DOI: 10.3762/bjoc.14.94] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2018] [Accepted: 04/26/2018] [Indexed: 12/19/2022] Open
Abstract
An oxidation system comprising phenyliodine(III) diacetate (PIDA) and iodosobenzene with inorganic bromide, i.e., sodium bromide, in an organic solvent led to the direct introduction of carboxylic acids into benzylic C–H bonds under mild conditions. The unique radical species, generated by the homolytic cleavage of the labile I(III)–Br bond of the in situ-formed bromo-λ3-iodane, initiated benzylic carboxylation with a high degree of selectivity for the secondary benzylic position.
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Affiliation(s)
- Toshifumi Dohi
- College of Pharmaceutical Sciences, Ritsumeikan University, 1-1-1 Nojihigashi, Kusatsu, Shiga 525-8577, Japan. Tel: +81-77-561-4908
| | - Shohei Ueda
- College of Pharmaceutical Sciences, Ritsumeikan University, 1-1-1 Nojihigashi, Kusatsu, Shiga 525-8577, Japan. Tel: +81-77-561-4908
| | - Kosuke Iwasaki
- College of Pharmaceutical Sciences, Ritsumeikan University, 1-1-1 Nojihigashi, Kusatsu, Shiga 525-8577, Japan. Tel: +81-77-561-4908
| | - Yusuke Tsunoda
- College of Pharmaceutical Sciences, Ritsumeikan University, 1-1-1 Nojihigashi, Kusatsu, Shiga 525-8577, Japan. Tel: +81-77-561-4908
| | - Koji Morimoto
- College of Pharmaceutical Sciences, Ritsumeikan University, 1-1-1 Nojihigashi, Kusatsu, Shiga 525-8577, Japan. Tel: +81-77-561-4908
| | - Yasuyuki Kita
- Research Organization of Science and Technology, Ritsumeikan University, 1-1-1 Nojihigashi, Kusatsu, Shiga 525-8577, Japan. Tel
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16
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Tepper R, Schubert US. Halogenbrücken in Lösung: Anionenerkennung, Templat‐gestützte Selbstorganisation und Organokatalyse. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201707986] [Citation(s) in RCA: 50] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Ronny Tepper
- Institut für Organische Chemie und Makromolekulare Chemie (IOMC) Friedrich-Schiller-Universität Jena Humboldtstraße 10 07743 Jena Deutschland
- Jena Center for Soft Matter (JCSM) Friedrich-Schiller-Universität Jena Philosophenweg 7 07743 Jena Deutschland
| | - Ulrich S. Schubert
- Institut für Organische Chemie und Makromolekulare Chemie (IOMC) Friedrich-Schiller-Universität Jena Humboldtstraße 10 07743 Jena Deutschland
- Jena Center for Soft Matter (JCSM) Friedrich-Schiller-Universität Jena Philosophenweg 7 07743 Jena Deutschland
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17
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Tepper R, Schubert US. Halogen Bonding in Solution: Anion Recognition, Templated Self-Assembly, and Organocatalysis. Angew Chem Int Ed Engl 2018; 57:6004-6016. [PMID: 29341377 DOI: 10.1002/anie.201707986] [Citation(s) in RCA: 181] [Impact Index Per Article: 30.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2017] [Revised: 12/14/2017] [Indexed: 12/21/2022]
Abstract
The halogen bond is a supramolecular interaction between a Lewis-acidic region of a covalently bound halogen and a Lewis base. It has been studied widely in silico and experimentally in the solid state; however, solution-phase applications have attracted enormous interest in the last few years. This Minireview highlights selected recent developments in halogen bond interactions in solution, with a focus on the use of receptors based on halogen bonds in anion recognition and sensing, anion-templated self-assembly, as well as in organocatalysis.
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Affiliation(s)
- Ronny Tepper
- Laboratory of Organic and Macromolecular Chemistry (IOMC), Friedrich Schiller University Jena, Humboldtstrasse 10, 07743, Jena, Germany.,Jena Center for Soft Matter (JCSM), Friedrich Schiller University Jena, Philosophenweg 7, 07743, Jena, Germany
| | - Ulrich S Schubert
- Laboratory of Organic and Macromolecular Chemistry (IOMC), Friedrich Schiller University Jena, Humboldtstrasse 10, 07743, Jena, Germany.,Jena Center for Soft Matter (JCSM), Friedrich Schiller University Jena, Philosophenweg 7, 07743, Jena, Germany
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18
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Haraguchi R, Hoshino S, Sakai M, Tanazawa SG, Morita Y, Komatsu T, Fukuzawa SI. Bulky iodotriazolium tetrafluoroborates as highly active halogen-bonding-donor catalysts. Chem Commun (Camb) 2018; 54:10320-10323. [DOI: 10.1039/c8cc05309j] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Bulky halogen-bonding-donor catalysts have been synthesized, and their catalytic activities for aza-Diels–Alder reaction were evaluated.
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Affiliation(s)
- Ryosuke Haraguchi
- Department of Applied Chemistry
- Institute of Science and Engineering
- Chuo University
- 112-8551 Tokyo
- Japan
| | - Shun Hoshino
- Department of Applied Chemistry
- Institute of Science and Engineering
- Chuo University
- 112-8551 Tokyo
- Japan
| | - Munenori Sakai
- Department of Applied Chemistry
- Institute of Science and Engineering
- Chuo University
- 112-8551 Tokyo
- Japan
| | - Sho-go Tanazawa
- Department of Applied Chemistry
- Institute of Science and Engineering
- Chuo University
- 112-8551 Tokyo
- Japan
| | - Yoshitsugu Morita
- Department of Applied Chemistry
- Institute of Science and Engineering
- Chuo University
- 112-8551 Tokyo
- Japan
| | - Teruyuki Komatsu
- Department of Applied Chemistry
- Institute of Science and Engineering
- Chuo University
- 112-8551 Tokyo
- Japan
| | - Shin-ichi Fukuzawa
- Department of Applied Chemistry
- Institute of Science and Engineering
- Chuo University
- 112-8551 Tokyo
- Japan
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Adiraju VAK, Martin CD. Isomer Dependence on the Reactivity of Diazenes with Pentaphenylborole. Chemistry 2017; 23:11437-11444. [DOI: 10.1002/chem.201702539] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2017] [Indexed: 11/05/2022]
Affiliation(s)
- Venkata A. K. Adiraju
- Department of Chemistry and Biochemistry; Baylor University; One Bear Place #97348 Waco TX 76798 USA
| | - Caleb D. Martin
- Department of Chemistry and Biochemistry; Baylor University; One Bear Place #97348 Waco TX 76798 USA
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Parella R, Babu SA. Pd(II)-Catalyzed Arylation and Intramolecular Amidation of γ-C(sp3)–H Bonds: En Route to Arylheteroarylmethane and Pyrrolidone Ring Annulated Furan/Thiophene Scaffolds. J Org Chem 2017; 82:7123-7150. [DOI: 10.1021/acs.joc.7b00582] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Ramarao Parella
- Department Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Knowledge
City, Sector 81, SAS Nagar, Manauli P.O., Mohali, Punjab 140306, India
| | - Srinivasarao Arulananda Babu
- Department Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Knowledge
City, Sector 81, SAS Nagar, Manauli P.O., Mohali, Punjab 140306, India
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Schoene J, Bel Abed H, Christmann M, Nazaré M. A straightforward approach to N -substituted-2 H -indazol-2-amines through reductive cyclization. Tetrahedron Lett 2017. [DOI: 10.1016/j.tetlet.2017.03.031] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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22
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Sudhapriya N, Balachandran C, Awale S, Perumal PT. Sn(ii)-Mediated facile approach for the synthesis of 2-aryl-2H-indazole-3-phosphonates and their anticancer activities. NEW J CHEM 2017. [DOI: 10.1039/c7nj00843k] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
The efficient synthesis of 2-aryl-2H-indazole-3-phosphonates has been achieved successfully via a SnCl2·2H2O mediated one-pot method.
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Affiliation(s)
- N. Sudhapriya
- Organic Chemistry Division
- CSIR-Central Leather Research Institute
- Chennai 600 020
- India
- Department of Chemistry
| | - C. Balachandran
- Division of Natural Drug Discovery
- Department of Translational Research
- Institute of Natural Medicine
- University of Toyama
- Toyama 930-0194
| | - S. Awale
- Division of Natural Drug Discovery
- Department of Translational Research
- Institute of Natural Medicine
- University of Toyama
- Toyama 930-0194
| | - P. T. Perumal
- Organic Chemistry Division
- CSIR-Central Leather Research Institute
- Chennai 600 020
- India
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