1
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Jin X, Nguyen BNT, Davies RP. Synthesis and characterisation of copper(I) complexes with relevance to intramolecular Ullmann O, S-arylation. Dalton Trans 2024; 53:12554-12559. [PMID: 38995223 DOI: 10.1039/d4dt01418a] [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
Copper-catalysed intramolecular Ullman arylation has been frequently used to synthesise benzoxazoles and benzothiazoles. Despite widespread use, investigations into the mechanism and speciation of copper-containing complexes relevant to the catalytic pathway have remained relatively limited. Accordingly, this study aims to elucidate the structural details of potential copper(I) intermediates through the analysis of their solid-state structures using X-ray crystallography, while also investigating the reactivities of these complexes. Five novel copper complexes are reported which are formed prior to the aryl halide activation step and feature distinct aggregation modes based on either Cu4N4O4C4 or Cu4N4S4C4 clusters.
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Affiliation(s)
- Xiaodong Jin
- Department of Chemistry, Molecular Sciences Research Hub, Imperial College White City Campus, Wood Lane, London W12 0BZ, UK.
- Department of Chemistry, Xi'an Jiaotong-Liverpool University, Suzhou 215123, China
| | - Bao-Nguyen T Nguyen
- Department of Chemistry, Molecular Sciences Research Hub, Imperial College White City Campus, Wood Lane, London W12 0BZ, UK.
| | - Robert P Davies
- Department of Chemistry, Molecular Sciences Research Hub, Imperial College White City Campus, Wood Lane, London W12 0BZ, UK.
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2
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Ganesh K, Sambasivam G, Gavara G, S R, Rajendra G, Karthikeyan S. An efficient metal free synthesis of 2-aminobenzothiozoles - a greener approach. Org Biomol Chem 2023; 21:564-568. [PMID: 36538019 DOI: 10.1039/d2ob01981g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
A facile one-pot, metal-free method for the synthesis of 2-aminobenzothiazoles was developed, which includes an initial reaction of electron-deficient 2-haloanilines with aromatic isothiocyanates and the subsequent intramolecular cyclization of the resulting thioureas through the SNAr mechanism. This one-pot, atom-economical, robust, and scalable method avoids the use of reagents such as acid chlorides and Lawesson's reagent that are difficult to handle.
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Affiliation(s)
- Krithika Ganesh
- Anthem Biosciences Pvt. Ltd, Bangalore 560099, India
- Vellore Institute of Technology, Vellore 632014, India
| | | | | | - Ramraj S
- Anthem Biosciences Pvt. Ltd, Bangalore 560099, India
| | | | - S Karthikeyan
- Vellore Institute of Technology, Vellore 632014, India
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3
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Kumar VH, Tamminana R. Copper‐catalyzed multicomponent green reaction approach: Synthesis of dihydropyrano [2, 3‐c] pyrazoles and evaluation of their anti‐cancer activity. J Heterocycl Chem 2022. [DOI: 10.1002/jhet.4555] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Venkata Hema Kumar
- Department of Chemistry GITAM Deemed to be University, NH‐207, Doddaballapur Taluk Bengaluru Rural Karnataka Inida
| | - Ramana Tamminana
- Department of Chemistry GITAM Deemed to be University, NH‐207, Doddaballapur Taluk Bengaluru Rural Karnataka Inida
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4
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The ultrasound-assisted synthesis of some novel fused-ring heterocyclic systems bearing structurally diverse benzazoles via a copper-catalyzed cross-coupling reaction. MONATSHEFTE FUR CHEMIE 2022. [DOI: 10.1007/s00706-022-02895-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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5
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Nematpour M, Karimi N, Mahboubi-Rabbani M. Copper-Catalyzed Ultrasonic-Promoted Coupling of Acetylene Analogs,
Dialkyl azo dicarboxylate, and Benzazoles to Assemble Tricyclic Fused-
Ring [1,2,3]triazolo[3,4-b][1,3]benzazole Analogs. LETT ORG CHEM 2022. [DOI: 10.2174/1570178618666211001120336] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
:
An unprecedented copper-catalyzed reaction of acetylene analogs with dialkyl azo dicarboxylate
and benzazole analogs via a cross-coupling sequence was reported. A library of triazolobenzazole
fused ring systems including [1,2,3] triazolo [3,4-b] [1,3] benzothiazole, [1,2,3]
triazolo [3,4-b] [1,3] benzoxazole and [1,2,3] triazolo[3,4-b][1,3]benzimidazole structures were
obtained in moderate to excellent yields under very mild reaction conditions. Structural confirmation
of the final products became possible using different methods like spectroscopy and elemental
analysis. The control experiments indicated C-H activation of acetylene by copper salts,
followed by cycloaddition between a 2-(phenylethynyl)benzo[d]azol-3(2H)-yl anion and azo dicarboxylate
as the key mechanistic feature. The broad substrate scope with simple and easily affordable
starting materials, as well as mild reaction conditions are the noticeable attributes of this
methodology, which provides facile access to the desired products.
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Affiliation(s)
- Manijeh Nematpour
- Department of Pharmaceutical Chemistry, School of Pharmacy, Shahid Beheshti University of Medical Sciences,
Tehran, Iran
| | - Nafiseh Karimi
- Department of Pharmaceutical Chemistry, School of Pharmacy, Shahid Beheshti University of Medical Sciences,
Tehran, Iran
| | - Mohammad Mahboubi-Rabbani
- Department of Pharmaceutical Chemistry, School of Pharmacy, Shahid Beheshti University of Medical Sciences,
Tehran, Iran
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6
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Yang J, Yu M, Jiang L. Fe‐catalyzed Dehydrogenative C−S Bond Formation for Access to 3‐Alkyl‐2‐(
N
‐aroyl)imino‐benzo[
d
]thiazolines. ASIAN J ORG CHEM 2021. [DOI: 10.1002/ajoc.202100478] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Jun Yang
- School of Chemistry and Molecular Enginerring East China Normal University 500 Dongchuan Road Shanghai 200241 P. R. China
| | - Miao Yu
- School of Chemistry and Molecular Enginerring East China Normal University 500 Dongchuan Road Shanghai 200241 P. R. China
| | - Liqin Jiang
- School of Chemistry and Molecular Enginerring East China Normal University 500 Dongchuan Road Shanghai 200241 P. R. China
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7
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Singh R, Sindhu J, Devi M, Kumar A, Kumar R, Hussain K, Kumar P. Solid‐Supported Materials‐Based Synthesis of 2‐Substituted Benzothiazoles: Recent Developments and Sanguine Future. ChemistrySelect 2021. [DOI: 10.1002/slct.202101368] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Rahul Singh
- Department of Chemistry Kurukshetra University Kurukshetra 136119 INDIA
| | - Jayant Sindhu
- Department of Chemistry COBS&H CCS Haryana Agricultural University Hisar 125004 INDIA
| | - Meena Devi
- Department of Chemistry Kurukshetra University Kurukshetra 136119 INDIA
| | - Ashwani Kumar
- Department of Pharmaceutical Sciences Guru Jambheshwar University of Science and Technology Hisar 125001 INDIA
| | - Ramesh Kumar
- Department of Chemistry Kurukshetra University Kurukshetra 136119 INDIA
| | - Khalid Hussain
- Department of Applied Sciences and Humanities Mewat Engineering College Nuh 122107 INDIA
| | - Parvin Kumar
- Department of Chemistry Kurukshetra University Kurukshetra 136119 INDIA
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8
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Kondraganti L, Tamminana R, Nathani SR, Babu MS, Ramachandran D. Cobalt-catalyzed domino C-N cross-coupling reaction between phenyl(2-halo)isothiourea and aryl halide. PHOSPHORUS SULFUR 2021. [DOI: 10.1080/10426507.2021.1871731] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
- Lakshmi Kondraganti
- Jawaharlal Nehru Technological University Kakinada, Kakinada, Andhra Pradesh, India
| | - Ramana Tamminana
- Department of Chemistry, GITAM School of Technology, GITAM University, Nagadenehalli, Karnataka, India
| | - Srinivasa Rao Nathani
- Department of Chemistry, Bapatla Engineering College, Bapatla, Andhra Pradesh, India
| | - Manabolu Surendra Babu
- Department of Chemistry, GITAM School of Technology, GITAM University, Medak, Telangana, India
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9
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Vanga SKR, Bollikolla HB, Peruri VVS. Catalyst‐free facile and efficient one‐pot synthesis of densely functionalized pyrroles and α‐amino ketones. J Heterocycl Chem 2021. [DOI: 10.1002/jhet.4227] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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10
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Boddapati SNM, Tamminana R, Alam MM, Gugulothu S, Varala R, Bollikolla HB. Efficient Pd( ii)-catalyzed regioselective ortho-halogenation of arylcyanamides. NEW J CHEM 2021. [DOI: 10.1039/d1nj01998h] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
2-Halo arylcyanamides have been constructed from cyanamides via Pd(ii)-catalyzed selective ortho-halogenation under moderate reaction conditions.
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Affiliation(s)
- S. N. Murthy Boddapati
- Department of Chemistry, Acharya Nagarjuna University, N Nagar, Guntur, A. P-522510, India
- Department of Chemistry, Sir C R Reddy College, P G Courses, Eluru, A.P-534007, India
| | - Ramana Tamminana
- Department of Chemistry, GITAM Deemed to be University, Bengaluru Campus, Bengaluru Rural, Karnataka, 562163, India
| | - M. Mujahid Alam
- Department of Chemistry, College of Science, King Khalid University, PO Box 9004, Abha 61413, Saudi Arabia
| | - Sailaja Gugulothu
- Department of Chemistry, Acharya Nagarjuna University, N Nagar, Guntur, A. P-522510, India
| | | | - Hari Babu Bollikolla
- Department of Chemistry, Acharya Nagarjuna University, N Nagar, Guntur, A. P-522510, India
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11
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Bao W, Wang Z, Cao Z, Wang X, Ma X, Yu X, He W. Visible‐Light‐Initiated Cascade Reaction of 2‐Isothiocyanatonaphthalenes and Amines under Additive‐ and External Photocatalyst‐Free and Mild Conditions. Adv Synth Catal 2020. [DOI: 10.1002/adsc.202001002] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Affiliation(s)
- Wen‐Hu Bao
- Department of Chemistry Hunan University of Science and Engineering Yongzhou 425100 People's Republic of China
| | - Zheng Wang
- Department of Chemistry Hunan University of Science and Engineering Yongzhou 425100 People's Republic of China
| | - Zhong Cao
- Hunan Provincial Key Laboratory of Materials Protection for Electric Power and Transportation Changsha University of Science and Technology Changsha 410114 People's Republic of China
| | - Xin‐Chang Wang
- Department of Chemistry Hunan University of Science and Engineering Yongzhou 425100 People's Republic of China
| | - Xin‐Ran Ma
- Department of Chemistry Hunan University of Science and Engineering Yongzhou 425100 People's Republic of China
| | - Xian‐Yong Yu
- School of Chemistry and Chemical Engineering Hunan University of Science and Technology Xiangtan 411201 People's Republic of China
| | - Wei‐Min He
- Department of Chemistry Hunan University of Science and Engineering Yongzhou 425100 People's Republic of China
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12
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Singh M, Vaishali, Paul AK, Singh V. Isatin as a 2-aminobenzaldehyde surrogate: transition metal-free efficient synthesis of 2-(2'-aminophenyl)benzothiazole derivatives. Org Biomol Chem 2020; 18:4459-4469. [PMID: 32490470 DOI: 10.1039/d0ob00888e] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A transition metal-free, convenient, and efficient practical approach has been devised for the synthesis of substituted 2-(2'-aminophenyl)benzothiazoles via a sulfur insertion strategy using isatin derivatives as 2-aminobenzaldehyde surrogates. KI assisted one-pot operation of isatin, arylamines and elemental sulfur resulted in the formation of a C-N and two C-S bonds and cascade cleavage of the isatin ring resulting in the formation of 2-(2'-aminophenyl)benzothiazoles. The significant features of this strategy are the readily available and inexpensive starting materials, broad substrate scope, sustainable reaction conditions and high yield of products. Importantly, the strategy was found to be appropriate for gram scale synthesis (>10 g) of 2-(2'-aminophenyl)benzothiazole derivatives. Moreover, the excellent photophysical properties (ΦF up to 60%) of 2-(2'-aminophenyl)benzothiazole derivatives provide huge scope in materials science.
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Affiliation(s)
- Manpreet Singh
- Department of Chemistry, Dr B R Ambedkar National Institute of Technology (NIT) Jalandhar, 144011, Punjab, India.
| | - Vaishali
- Department of Chemistry, Dr B R Ambedkar National Institute of Technology (NIT) Jalandhar, 144011, Punjab, India.
| | - Avijit Kumar Paul
- Department of Chemistry, National Institute of Technology (NIT) Kurukshetra, 136119, Haryana, India
| | - Virender Singh
- Department of Chemistry, Dr B R Ambedkar National Institute of Technology (NIT) Jalandhar, 144011, Punjab, India. and Department of Chemistry, Central University of Punjab, Bathinda, 151001, Punjab, India. virender.singh.cup.edu.in
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13
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Boddapati SNM, Tamminana R, Gollapudi RK, Nurbasha S, Assal ME, Alduhaish O, Siddiqui MRH, Bollikolla HB, Adil SF. Copper-Promoted One-Pot Approach: Synthesis of Benzimidazoles. Molecules 2020; 25:molecules25081788. [PMID: 32295143 PMCID: PMC7221555 DOI: 10.3390/molecules25081788] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2020] [Revised: 04/06/2020] [Accepted: 04/09/2020] [Indexed: 01/31/2023] Open
Abstract
A facile, one-pot, and proficient method was developed for the production of various 2-arylaminobenzimidazoles. This methodology is based for the first time on a copper catalyst promoted domino C-N cross-coupling reaction for the generation of 2-arylaminobenzimidazoles. Mechanistic investigations revealed that the synthetic pathway involves a copper-based desulphurization/nucleophilic substitution and a subsequent domino intra and intermolecular C-N cross-coupling reactions. Some of the issues typically encountered during the synthesis of 2-arylaminobezimidazoles, including the use of expensive catalytic systems and the low reactivity of bromo precursors, were addressed using this newly developed copper-catalyzed method. The reaction procedure is simple, generally with excellent substrate tolerance, and provides good to high yields of the desired products.
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Affiliation(s)
- S. N. Murthy Boddapati
- Department of Chemistry, Acharya Nagarjuna University, Guntur, Andhar Pradesh 522510, India; (S.N.M.B.); (R.K.G.); (S.N.)
- Department of Chemistry, Sir C. R. Reddy College, PG Courses, Eluru, Andhra Pradesh 534002, India
| | - Ramana Tamminana
- Department of Chemistry, GITAM Deemed to Be University, Bengaluru Campus, Karnataka 562163, India;
| | - Ravi Kumar Gollapudi
- Department of Chemistry, Acharya Nagarjuna University, Guntur, Andhar Pradesh 522510, India; (S.N.M.B.); (R.K.G.); (S.N.)
| | - Sharmila Nurbasha
- Department of Chemistry, Acharya Nagarjuna University, Guntur, Andhar Pradesh 522510, India; (S.N.M.B.); (R.K.G.); (S.N.)
| | - Mohamed E. Assal
- Department of Chemistry, College of Science, King Saud University, P.O. 2455, Riyadh 11451, Saudi Arabia; (M.E.A.); (M.R.H.S.)
| | - Osamah Alduhaish
- Department of Chemistry, College of Science, King Saud University, P.O. 2455, Riyadh 11451, Saudi Arabia; (M.E.A.); (M.R.H.S.)
- Correspondence: (O.A.); (H.B.B.); (S.F.A.)
| | - Mohammed Rafiq H. Siddiqui
- Department of Chemistry, College of Science, King Saud University, P.O. 2455, Riyadh 11451, Saudi Arabia; (M.E.A.); (M.R.H.S.)
| | - Hari Babu Bollikolla
- Department of Chemistry, Acharya Nagarjuna University, Guntur, Andhar Pradesh 522510, India; (S.N.M.B.); (R.K.G.); (S.N.)
- Correspondence: (O.A.); (H.B.B.); (S.F.A.)
| | - Syed Farooq Adil
- Department of Chemistry, College of Science, King Saud University, P.O. 2455, Riyadh 11451, Saudi Arabia; (M.E.A.); (M.R.H.S.)
- Correspondence: (O.A.); (H.B.B.); (S.F.A.)
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14
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Singh M, Dhar S. Yadav L, Krishna Pal Singh R. Visible-light photoredox catalytic approach for the direct synthesis of 2-aminobenzothiazoles from anilines. Tetrahedron Lett 2020. [DOI: 10.1016/j.tetlet.2020.151700] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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15
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Boddapati S, Saketi JMR, Mutchu BR, Bollikolla HB, Adil SF, Khan M. Copper promoted desulfurization and C-N cross coupling reactions: Simple approach to the synthesis of substituted 2-aminobenzoxazoles and 2,5-disubstituted tetrazole amines. ARAB J CHEM 2020. [DOI: 10.1016/j.arabjc.2019.09.001] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023] Open
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16
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Zhu YQ, Zhang R, Sang W, Wang HJ, Wu Y, Yu BY, Zhang JC, Cheng H, Chen C. Ligand-controlled palladium catalysis enables switch between mono- and di-arylation of primary aromatic amines with 2-halobenzothiazoles. Org Chem Front 2020. [DOI: 10.1039/d0qo00361a] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Mono- and di-arylation was switchable simply by varying the applied ligand from Xantphos to a pyridine-functionalized N-heterocyclic carbene (NHC) ligand.
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Affiliation(s)
- Yan-Qiu Zhu
- Department of Chemical Engineering and Food Science
- Hubei University of Arts and Science
- Xiangyang 441053
- P. R. China
| | - Rui Zhang
- Department of Chemical Engineering and Food Science
- Hubei University of Arts and Science
- Xiangyang 441053
- P. R. China
| | - Wei Sang
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing
- Wuhan University of Technology
- Wuhan 430070
- P. R. China
| | - Hua-Jing Wang
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing
- Wuhan University of Technology
- Wuhan 430070
- P. R. China
| | - Yuan Wu
- Key Laboratory of Pesticide & Chemical Biology
- Ministry of Education
- College of Chemistry
- Central China Normal University
- Wuhan 430079
| | - Bao-Yi Yu
- Key Laboratory of Urban Agriculture (North China)
- Ministry of Agriculture
- Beijing University of Agriculture
- Beijing 102206
- P. R. China
| | - Jun-Chao Zhang
- Department of Chemical Engineering and Food Science
- Hubei University of Arts and Science
- Xiangyang 441053
- P. R. China
| | - Hua Cheng
- Department of Chemical Engineering and Food Science
- Hubei University of Arts and Science
- Xiangyang 441053
- P. R. China
| | - Cheng Chen
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing
- Wuhan University of Technology
- Wuhan 430070
- P. R. China
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17
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Rong HJ, Yang CF, Chen T, Xu ZG, Su TD, Wang YQ, Ning BK. Iodine-catalyzed guanylation of amines withN,N′-di-Boc-thiourea. Org Biomol Chem 2019; 17:9280-9283. [DOI: 10.1039/c9ob02014d] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Iodine-catalyzed guanylation of amines withN,N′-di-Boc-thiourea is especially useful for both electronically and sterically deactivated primary anilines.
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Affiliation(s)
- Hao-Jie Rong
- Modern Chemistry Research Institute of Xi'an
- Xi'an 710065
- China
- Department of Chemistry & Materials Science
- Northwest University
| | - Cui-Feng Yang
- Modern Chemistry Research Institute of Xi'an
- Xi'an 710065
- China
| | - Tao Chen
- Modern Chemistry Research Institute of Xi'an
- Xi'an 710065
- China
| | - Ze-Gang Xu
- Modern Chemistry Research Institute of Xi'an
- Xi'an 710065
- China
| | - Tian-Duo Su
- Modern Chemistry Research Institute of Xi'an
- Xi'an 710065
- China
| | - Yong-Qiang Wang
- Department of Chemistry & Materials Science
- Northwest University
- Xi'an 710069
- China
| | - Bin-Ke Ning
- Modern Chemistry Research Institute of Xi'an
- Xi'an 710065
- China
- State Key Laboratory of Fluorine & Nitrogen Chemicals
- Xi'an 710065
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