1
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Rana S, Shaw R, Pratap R. Influence of steric hindrance on the 1,4- versus 1,6-Michael addition: synthesis of furans and pentasubstituted benzenes. Org Biomol Chem 2024; 22:5361-5373. [PMID: 38869426 DOI: 10.1039/d4ob00686k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/14/2024]
Abstract
We described the influence of steric hindrance on the 1,4- versus 1,6-Michael addition reaction on 2-(3,3-bis(methylthio)-1-arylallylidene)malononitriles. An efficient and direct synthesis of trisubstituted furans was achieved through the reaction of 2-(3,3-bis(methylthio)-1-arylallylidene)malononitriles and acetone under mild conditions in good to moderate yield by the 1,4-Michael addition. Further exploration of the reaction with a sterically hindered aryl group containing 2-(3,3-bis(methylthio)-1-arylallylidene)malononitriles afforded biaryls by an in situ generated nucleophile through the 1,6-Michael addition. The synthetic utility of furan is further explored. These precursors are easily accessible from aryl methyl ketones. Various functional groups like alkyl, aryl, nitrile, amine, aroyl, and thiomethyl can be directly installed in the benzene and furan rings. A one-pot approach for the construction of a benzene nucleus was also developed. The structure of two compounds was confirmed by X-ray crystallography.
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Affiliation(s)
- Shally Rana
- Department of Chemistry, University of Delhi, North Campus, Delhi-110007, India.
- Department of Chemistry, School of Science Indrashil University, Rajpur, Kadi, Ahmedabad-Mehsana Highway, Gujarat, 382740, India
| | - Ranjay Shaw
- Department of Chemistry, GLA University, Mathura, 281406, India
| | - Ramendra Pratap
- Department of Chemistry, University of Delhi, North Campus, Delhi-110007, India.
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2
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Lin LC, Suresh S, Lin KW, Kavala V, Yao CF. One-Pot Knoevenagel/Imination/6π-Azaelectrocyclization Sequence for the Synthesis of Disubstituted Nicotinonitriles. J Org Chem 2023. [PMID: 37437261 DOI: 10.1021/acs.joc.3c00929] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/14/2023]
Abstract
We report on a copper-catalyzed three-component reaction for the synthesis of disubstituted nicotinonitriles using 3-bromopropenals, benzoylacetonitriles, and ammonium acetate (NH4OAc). The Knoevenagel-type condensation of 3-bromopropenals with benzoylacetonitriles gives δ-bromo-2,4-dienones that contain strategically placed functional groups that react with the ammonia generated in situ to give the corresponding azatrienes. These azatrienes can then be transformed into trisubstituted pyridines under the reaction conditions via a reaction sequence involving 6π-azaelectrocyclization and aromatization.
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Affiliation(s)
- Li-Chun Lin
- Department of Chemistry, National Taiwan Normal University, No. 88, Sec. 4, Ting-Zhou Road, Taipei 11677, Taiwan, R.O.C
| | - Sundaram Suresh
- Department of Chemistry, National Taiwan Normal University, No. 88, Sec. 4, Ting-Zhou Road, Taipei 11677, Taiwan, R.O.C
| | - Kun-Wu Lin
- Department of Chemistry, National Taiwan Normal University, No. 88, Sec. 4, Ting-Zhou Road, Taipei 11677, Taiwan, R.O.C
| | - Veerababurao Kavala
- Department of Chemistry, National Taiwan Normal University, No. 88, Sec. 4, Ting-Zhou Road, Taipei 11677, Taiwan, R.O.C
| | - Ching-Fa Yao
- Department of Chemistry, National Taiwan Normal University, No. 88, Sec. 4, Ting-Zhou Road, Taipei 11677, Taiwan, R.O.C
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3
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Chatterjee R, Bhukta S, Angajala KK, Dandela R. Copper catalysed oxidative cascade deamination/cyclization of vinyl azide and benzylamine for the synthesis of 2,4,6-triarylpyridines. Org Biomol Chem 2023. [PMID: 37334911 DOI: 10.1039/d3ob00625e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/21/2023]
Abstract
A highly efficient one-pot method for the synthesis of 2,4,6-triaryl pyridines has been developed via cascade deamination and annulation. Copper triflate and molecular iodine easily promoted the oxidative cyclization reaction of vinyl azide and benzylamine to access a wide variety of substituted pyridine substrates under an oxygen atmosphere. The presence of benzyl amine enables the cyclization process by providing the aryl functionality and the nitrogen source. Moreover, a broad range of substrates with good functional group tolerance, avoidance of external oxidants, excellent product yields, operational simplicity and mild conditions are the notable advantages of the present protocol.
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Affiliation(s)
- Rana Chatterjee
- Department of Industrial and Engineering Chemistry, Institute of Chemical Technology, Indian Oil Odisha Campus, Samantpuri, Bhubaneswar 751013, India.
| | - Swadhapriya Bhukta
- Department of Industrial and Engineering Chemistry, Institute of Chemical Technology, Indian Oil Odisha Campus, Samantpuri, Bhubaneswar 751013, India.
| | - Kishore Kumar Angajala
- Department of Humanities and Sciences, Vardhaman College of Engineering, Shamshabad, Hyderabad-501218, Telangana, India
| | - Rambabu Dandela
- Department of Industrial and Engineering Chemistry, Institute of Chemical Technology, Indian Oil Odisha Campus, Samantpuri, Bhubaneswar 751013, India.
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4
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Pal S, Das S, Chakraborty S, Khanra S, Paul ND. Zn(II)-Catalyzed Multicomponent Sustainable Synthesis of Pyridines in Air. J Org Chem 2023; 88:3650-3665. [PMID: 36854027 DOI: 10.1021/acs.joc.2c02867] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/02/2023]
Abstract
Herein, we report a Zn(II)-catalyzed solvent-free sustainable synthesis of tri- and tetra-substituted pyridines using alcohols as the primary feedstock and NH4OAc as the nitrogen source. Using a well-defined air-stable Zn(II)-catalyst, 1a, featuring a redox-active tridentate azo-aromatic pincer, 2-((4-chlorophenyl)diazenyl)-1,10-phenanthroline (La), a wide variety of unsymmetrical 2,4,6-substituted pyridines were prepared by three-component coupling of primary and secondary alcohols with NH4OAc. Catalyst 1a is equally compatible with the four-component coupling. Unsymmetrical 2,4,6-substituted pyridines were also prepared via a four-component coupling of a primary alcohol with two different secondary alcohols and NH4OAc. A series of tetra-substituted pyridines were prepared up to 67% yield by coupling primary and secondary alcohols with 1-phenylpropan-1-one or 1,2-diphenylethan-1-one and NH4OAc. The 1a-catalyzed reactions also proceeded efficiently upon replacing the secondary alcohols with the corresponding ketones, producing the desired tri- and tetra-substituted pyridines in higher yields in a shorter reaction time. A few control experiments were performed to unveil the mechanistic aspects, which indicates that the active participation of the aryl-azo ligand during catalysis enables the Zn(II)-complex to act as an efficient catalyst for the present multicomponent reactions. Aerial oxygen acts as an oxidant during the Zn(II)-catalyzed dehydrogenation of alcohols, producing H2O and H2O2 as byproducts.
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Affiliation(s)
- Subhasree Pal
- Department of Chemistry, Indian Institute of Engineering Science and Technology, Shibpur, Botanic Garden, Howrah 711103, India
| | - Siuli Das
- Department of Chemistry, Indian Institute of Engineering Science and Technology, Shibpur, Botanic Garden, Howrah 711103, India
| | - Subhajit Chakraborty
- Department of Chemistry, Indian Institute of Engineering Science and Technology, Shibpur, Botanic Garden, Howrah 711103, India
| | - Subhankar Khanra
- Department of Chemistry, Indian Institute of Engineering Science and Technology, Shibpur, Botanic Garden, Howrah 711103, India
| | - Nanda D Paul
- Department of Chemistry, Indian Institute of Engineering Science and Technology, Shibpur, Botanic Garden, Howrah 711103, India
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5
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El Hallaoui A, Merroun Y, Chehab S, Ghailane R, Souizi A. One-pot synthesis of 2,4,6-triarylpyridines by cyclocondensation between aryl aldehyde, acetophenone derivative, and ammonium acetate using Al/Ag3PO4 as a new and green bimetallic catalyst. MONATSHEFTE FUR CHEMIE 2022. [DOI: 10.1007/s00706-022-03023-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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6
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Kumar S L, Tabassum S, K S S, Govindaraju S. A Mini Review on the Multicomponent Synthesis of Pyridine Derivatives. ChemistrySelect 2022. [DOI: 10.1002/slct.202203668] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Lokesh Kumar S
- Department of Chemistry CHRIST – Deemed to be University Bengaluru Karnataka India 560029
| | - Sumaiya Tabassum
- Department of Chemistry Surana College Bengaluru Karnataka India
| | - Sagar K S
- Yuvaraja's College (Autonomous) University of Mysore Mysuru Karnataka India
| | - Santhosh Govindaraju
- Department of Sciences & Humanities CHRIST – Deemed to be University Bengaluru Karnataka India
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7
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Cheng D, Yang H, Yu C, Tao Y, Xu X. Synthesis of Multi-arylated Pyridines via Tandem Oxidative Reaction. Tetrahedron Lett 2022. [DOI: 10.1016/j.tetlet.2022.154243] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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8
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Negi A, Mirallai SI, Konda S, Murphy PV. An improved method for synthesis of non-symmetric triarylpyridines. Tetrahedron 2022. [DOI: 10.1016/j.tet.2022.132930] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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9
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Reza AI, Iwai K, Nishiwaki N. Recent Advances in Synthesis of Multiply Arylated/Alkylated Pyridines. CHEM REC 2022; 22:e202200099. [PMID: 35701177 DOI: 10.1002/tcr.202200099] [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: 05/28/2022] [Indexed: 11/10/2022]
Abstract
Multiply aryl/alkyl-substituted pyridines are some of the untapped synthetic targets because of the challenge in regioselectively introducing less polar aryl/alkyl groups at the desired positions in the pyridine framework. Interestingly, the importance of this family of compounds has increased annually, particularly in biological and materials engineering applications. The syntheses of such pyridines have been extensively reported, but there is a lack of comprehensive review articles. Hence, this review discusses recent advances by grouping reaction patterns that generally deliver tri-, tetra-, and penta-aryl/alkyl pyridines.
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Affiliation(s)
- Annisa Indah Reza
- School of Environmental Science and Engineering, Kochi University of Technology, Tosayamada, Kami, Kochi 782-8502, Japan
| | - Kento Iwai
- School of Environmental Science and Engineering, Kochi University of Technology, Tosayamada, Kami, Kochi 782-8502, Japan.,Research Center for Molecular Design, Kochi University of Technology, Tosayamada, Kami, Kochi 782-8502, Japan
| | - Nagatoshi Nishiwaki
- School of Environmental Science and Engineering, Kochi University of Technology, Tosayamada, Kami, Kochi 782-8502, Japan.,Research Center for Molecular Design, Kochi University of Technology, Tosayamada, Kami, Kochi 782-8502, Japan
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10
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Chan CK, Chung YH, Wang CC. TMSOTf-mediated Kröhnke pyridine synthesis using HMDS as the nitrogen source under microwave irradiation. RSC Adv 2022; 12:8263-8273. [PMID: 35424740 PMCID: PMC8982443 DOI: 10.1039/d2ra00084a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2022] [Accepted: 03/01/2022] [Indexed: 01/20/2023] Open
Abstract
An efficient protocol for the preparation of pyridine skeletons has been successfully developed involving the TMSOTf/HMDS (trifluoromethanesulfonic acid/hexamethyldisilane) system for the intermolecular cyclization of chalcones under MW (microwave) irradiation conditions. This method provides a facile approach to synthesize 2,4,6-triaryl or 3-benzyl-2,4,6-triarylpyridines in good to excellent yields. Interestingly, the 2,6-diazabicyclo[2.2.2]oct-2-ene core was obtained by changing the acid additive to Sn(OTf)2, and the desired product was also confirmed using X-ray single-crystal diffraction analysis. A Kröhnke pyridine synthetic route towards functionalized TAPs and 3-benzyl TAPs has been established using TMSOTf/HMDS under microwave irradiation conditions.![]()
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Affiliation(s)
- Chieh-Kai Chan
- Institute of Chemistry, Academia Sinica Taipei 115 Taiwan
| | - Yi-Hsiu Chung
- Institute of Chemistry, Academia Sinica Taipei 115 Taiwan
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11
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Jalali-Mola S, Torabi M, Yarie M, Zolfigol MA. Acidic tributyl phosphonium-based ionic liquid: an efficient catalyst for preparation of diverse pyridine systems via a cooperative vinylogous anomeric-based oxidation. RSC Adv 2022; 12:34730-34739. [DOI: 10.1039/d2ra04631h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2022] [Accepted: 11/17/2022] [Indexed: 12/12/2022] Open
Abstract
Experimental procedure for the synthesis of triaryl pyridines, indolyl pyridines and nicotinonitriles.
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Affiliation(s)
- Sepideh Jalali-Mola
- Department of Organic Chemistry, Faculty of Chemistry, Bu-Ali Sina University, Hamedan, Iran
| | - Morteza Torabi
- Department of Organic Chemistry, Faculty of Chemistry, Bu-Ali Sina University, Hamedan, Iran
| | - Meysam Yarie
- Department of Organic Chemistry, Faculty of Chemistry, Bu-Ali Sina University, Hamedan, Iran
| | - Mohammad Ali Zolfigol
- Department of Organic Chemistry, Faculty of Chemistry, Bu-Ali Sina University, Hamedan, Iran
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12
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Shabalin DA. Recent advances and future challenges in the synthesis of 2,4,6-triarylpyridines. Org Biomol Chem 2021; 19:8184-8204. [PMID: 34499071 DOI: 10.1039/d1ob01310f] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
2,4,6-Triarylpyridines are key building blocks to access functional molecules that are used in the design of advanced materials, metal-organic frameworks, supramolecules, reactive chemical intermediates and drugs. A number of synthetic protocols to construct this heterocyclic scaffold have been developed to date, the most recent of which (2015-present) are included and discussed in the present review. An emphasis has been placed on the utility of each synthetic approach in view of the scope of aryl/hetaryl substituents, limitations and an outlook of each method to be used in applied sciences.
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Affiliation(s)
- Dmitrii A Shabalin
- A.E. Favorsky Irkutsk Institute of Chemistry SB RAS, 1 Favorsky St, Irkutsk, 664033, Russian Federation.
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13
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Gopalaiah K, Choudhary R. Synthesis of Kröhnke pyridines through iron-catalyzed oxidative condensation/double alkynylation/amination cascade strategy. Tetrahedron 2021. [DOI: 10.1016/j.tet.2021.132429] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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14
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Asressu K, Chan CK, Wang CC. One-Pot Synthesis of 1,5-Diketones under a Transition-Metal-Free Condition: Application in the Synthesis of 2,4,6-Triaryl Pyridine Derivatives. ACS OMEGA 2021; 6:7296-7311. [PMID: 33778244 PMCID: PMC7992091 DOI: 10.1021/acsomega.0c05328] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/01/2020] [Accepted: 02/22/2021] [Indexed: 06/12/2023]
Abstract
We developed a facile and green one-pot synthetic method for substituted 1,3,5-triaryl-1,5-diketones by Claisen-Schmidt condensation following Michael addition reaction of aryl ketones and aryl aldehydes under a transition-metal-free condition. This convenient one-pot synthetic strategy has several advantages, including being transition-metal-free, having no extra additives or reagents, having a broad substrate scope, having a high isolated yield, having a minimum amount of base employment, having a shorter reaction time, use of cheap starting materials, cost-effectiveness, and being environment friendly. Some of the chemical structures of 1,5-diketones were confirmed by X-ray single-crystal diffraction analysis. The application of 1,5-diketones was demonstrated in the preparation of 2,4,6-triaryl pyridine derivatives under a catalyst-free system using ammonium acetate as a nitrogen source.
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Affiliation(s)
| | - Chieh-Kai Chan
- Institute of Chemistry, Academia
Sinica, Taipei 115, Taiwan
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15
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Ge D, Luo XL, Tang X, Pang CB, Wang X, Chu XQ. Metal-free [3 + 2 + 1] annulation of allylic alcohols, ketones, and ammonium acetate: radical-involving synthesis of 2,3-diarylpyridine derivatives. Org Biomol Chem 2021; 19:2277-2283. [PMID: 33624664 DOI: 10.1039/d0ob02593c] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
A three-component [3 + 2 + 1] annulation strategy for the synthesis of biologically and pharmaceutically active 2,3-diarylpyridine derivatives by using a series of allylic alcohols, ketones, and ammonium acetate as substrates has been developed. The method proceeds efficiently under metal-free conditions, and the desired heterocycles could be obtained in a site-specific selectivity manner with good functional group tolerance.
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Affiliation(s)
- Danhua Ge
- School of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing 211816, China.
| | - Xin-Long Luo
- School of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing 211816, China.
| | - Xi Tang
- School of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing 211816, China.
| | - Chao-Bin Pang
- School of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing 211816, China.
| | - Xin Wang
- Hubei Province Geological Experimental Testing Center, Wuhan Hubei 430034, China
| | - Xue-Qiang Chu
- School of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing 211816, China.
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16
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Ding Y, Ma R, Xiao XQ, Wang L, Wang Z, Ma Y. Sustainable Four-Component Annulation for the Synthesis of 2,3,4,6-Tetraarylpyridines. J Org Chem 2021; 86:3897-3906. [PMID: 33595303 DOI: 10.1021/acs.joc.0c02764] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
A one-pot, four-component annulation of 2,3,4,6-tetraarylpyridines from aromatic aldehydes, methyl ketones, diaryl ethanones, and ammonium acetate is described. The reaction features high functional group compatibility in air under solvent-free conditions without any additive and only water as the nontoxic byproduct, providing a strategy for the facile, economical, and eco-friendly construction of multiaryl-substituted pyridines from simple and readily available reactants.
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Affiliation(s)
- Yuxin Ding
- Institute of Advanced Studies and School of Pharmaceutical and Chemical Engineering, Taizhou University, Taizhou 318000, P R China.,School of Pharmaceutical Science, Zhejiang Chinese Medical University, Hangzhou 310053, P R China
| | - Renchao Ma
- Institute of Advanced Studies and School of Pharmaceutical and Chemical Engineering, Taizhou University, Taizhou 318000, P R China
| | - Xu-Qiong Xiao
- Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education, Hangzhou Normal University, No. 2318 Yuhangtang Road, Hangzhou 311121, P R China
| | - Lei Wang
- Institute of Advanced Studies and School of Pharmaceutical and Chemical Engineering, Taizhou University, Taizhou 318000, P R China
| | - Zhiming Wang
- Institute of Advanced Studies and School of Pharmaceutical and Chemical Engineering, Taizhou University, Taizhou 318000, P R China
| | - Yongmin Ma
- Institute of Advanced Studies and School of Pharmaceutical and Chemical Engineering, Taizhou University, Taizhou 318000, P R China.,School of Pharmaceutical Science, Zhejiang Chinese Medical University, Hangzhou 310053, P R China
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17
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Domaradzki ME, Liu X, Ong J, Yu G, Zhang G, Simantov A, Perl E, Chen Y. Triflic acid mediated sequential cyclization of ortho-alkynylarylesters with ammonium acetate. Tetrahedron 2020. [DOI: 10.1016/j.tet.2020.131437] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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18
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Li M, Wang T, Wang C. Multicomponent Reaction of Pyridinium Salts,
β
‐Nitrostyrenes and Ammonium Acetate under the DBU/Acetic Acid System: Access to 2,4,6‐Triarylpyridine Derivatives. ChemistrySelect 2020. [DOI: 10.1002/slct.202000387] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Mingshuang Li
- School of Chemistry and Chemical EngineeringYangzhou University 180 Siwangting Street Yangzhou 225002 P. R. China
| | - Ting Wang
- School of Chemistry and Chemical EngineeringYangzhou University 180 Siwangting Street Yangzhou 225002 P. R. China
| | - Cunde Wang
- School of Chemistry and Chemical EngineeringYangzhou University 180 Siwangting Street Yangzhou 225002 P. R. China
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19
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Mandal D, Gupta R, Jaiswal AK, Young RD. Frustrated Lewis-Pair-Meditated Selective Single Fluoride Substitution in Trifluoromethyl Groups. J Am Chem Soc 2020; 142:2572-2578. [DOI: 10.1021/jacs.9b12167] [Citation(s) in RCA: 67] [Impact Index Per Article: 16.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Dipendu Mandal
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543
| | - Richa Gupta
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543
| | - Amit K. Jaiswal
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543
| | - Rowan D. Young
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543
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20
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Matouš P, Kadaník M, Timoracký M, Kuneš J, Maříková J, Růžička A, Kočovský P, Pour M. Nucleophile-assisted cyclization of β-propargylamino acrylic compounds catalyzed by gold( i): a rapid construction of multisubstituted tetrahydropyridines and their fused derivatives. Org Chem Front 2020. [DOI: 10.1039/d0qo00653j] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
A variety of medicinally important multisubstituted tetrahydropyridines, 4-aryl piperidines, isoquinolines and fused pyridines were prepared in 1–3 step sequences via nucleophile-assisted Au(i)-catalyzed cyclizations of easily available azaenynes.
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Affiliation(s)
- Petr Matouš
- Department of Organic and Bioorganic Chemistry
- Charles University
- Faculty of Pharmacy in Hradec Králové
- Hradec Králové 500 05
- Czech Republic
| | - Michal Kadaník
- Department of Organic and Bioorganic Chemistry
- Charles University
- Faculty of Pharmacy in Hradec Králové
- Hradec Králové 500 05
- Czech Republic
| | - Marek Timoracký
- Department of Organic and Bioorganic Chemistry
- Charles University
- Faculty of Pharmacy in Hradec Králové
- Hradec Králové 500 05
- Czech Republic
| | - Jiří Kuneš
- Department of Organic and Bioorganic Chemistry
- Charles University
- Faculty of Pharmacy in Hradec Králové
- Hradec Králové 500 05
- Czech Republic
| | - Jana Maříková
- Department of Organic and Bioorganic Chemistry
- Charles University
- Faculty of Pharmacy in Hradec Králové
- Hradec Králové 500 05
- Czech Republic
| | - Aleš Růžička
- Department of General and Inorganic Chemistry
- University of Pardubice
- Faculty of Chemical Technology
- 532 10 Pardubice
- Czech Republic
| | - Pavel Kočovský
- Department of Organic and Bioorganic Chemistry
- Charles University
- Faculty of Pharmacy in Hradec Králové
- Hradec Králové 500 05
- Czech Republic
| | - Milan Pour
- Department of Organic and Bioorganic Chemistry
- Charles University
- Faculty of Pharmacy in Hradec Králové
- Hradec Králové 500 05
- Czech Republic
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21
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Gajaganti S, Kumar D, Singh S, Srivastava V, Allam BK. A New Avenue to the Synthesis of Symmetrically Substituted Pyridines Catalyzed by Magnetic Nano–Fe
3
O
4
: Methyl Arenes as Sustainable Surrogates of Aryl Aldehydes. ChemistrySelect 2019. [DOI: 10.1002/slct.201900289] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Somaiah Gajaganti
- Department of ChemistryIndian Institute of Technology (BHU) Varanasi 221 005, Uttar Pradesh India
| | - Dhirendra Kumar
- Department of ChemistryIndian Institute of Technology (BHU) Varanasi 221 005, Uttar Pradesh India
| | - Sundaram Singh
- Department of ChemistryIndian Institute of Technology (BHU) Varanasi 221 005, Uttar Pradesh India
| | - Vandana Srivastava
- Department of ChemistryIndian Institute of Technology (BHU) Varanasi 221 005, Uttar Pradesh India
| | - Bharat Kumar Allam
- Department of ChemistryIndian Institute of Technology (BHU) Varanasi 221 005, Uttar Pradesh India
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22
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Zhang X, Wang P, Yuan X, Qin M, Chen B. Synthesis of Pyridine Derivatives from Acetophenone and Ammonium Acetate by Releasing CH
4. ASIAN J ORG CHEM 2019. [DOI: 10.1002/ajoc.201900323] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- Xueguo Zhang
- State Key Laboratory of Applied Organic ChemistryLanzhou University Gansu Lanzhou 730000 P. R. China
| | - Peigen Wang
- State Key Laboratory of Applied Organic ChemistryLanzhou University Gansu Lanzhou 730000 P. R. China
| | - Xinglong Yuan
- State Key Laboratory of Applied Organic ChemistryLanzhou University Gansu Lanzhou 730000 P. R. China
| | - Mingda Qin
- State Key Laboratory of Applied Organic ChemistryLanzhou University Gansu Lanzhou 730000 P. R. China
| | - Baohua Chen
- State Key Laboratory of Applied Organic ChemistryLanzhou University Gansu Lanzhou 730000 P. R. China
- Zhongwei High-tech Institute ofLanzhou University Zhongwei, Ningxia 755500 China
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23
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Synthesis of Pyrimidines with Ammonium Acetate as Nitrogen Source Under Solvent‐Free Conditions. ASIAN J ORG CHEM 2019. [DOI: 10.1002/ajoc.201900248] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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24
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Dong CP, Kodama S, Nomoto A, Ueshima M, Ogawa A. 4,6-Dihydroxysalicylic Acid-Catalyzed Oxidative Condensation of Benzylic Amines and Aromatic Ketones for the Preparation of 2,4,6-Trisubstituted Pyridines and Its Application to Metal-Free Synthesis of G-Quadruplex Binding Ligands. ACS OMEGA 2019; 4:9029-9040. [PMID: 31459991 PMCID: PMC6648211 DOI: 10.1021/acsomega.9b00999] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/08/2019] [Accepted: 05/08/2019] [Indexed: 05/08/2023]
Abstract
4,6-Dihydroxysalicylic acid was activated under air to catalyze the one-pot oxidative condensation reaction of benzylamines with acetophenones in the presence of BF3·Et2O, affording 2,4,6-trisubstituted pyridines in yields of 59-91%. During this metal-free oxidative condensation reaction, the benzylamines not only provided the aryl moiety at the 4-position of the pyridines but also acted as the nitrogen donor. This method can be applied to the metal-free synthesis of G-quadruplex binding ligands by the sequential addition of 4-chlorobutyryl chloride and pyrrolidine to the reaction system of the 2,4,6-trisubstituted pyridine synthesis.
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25
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Zhao S, Hu C, Guo L, Li K, Yu H. Isolation of a 3-hydroxypyridine degrading bacterium, Agrobacterium sp. DW-1, and its proposed degradation pathway. AMB Express 2019; 9:65. [PMID: 31102032 PMCID: PMC6525221 DOI: 10.1186/s13568-019-0782-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2019] [Accepted: 04/23/2019] [Indexed: 01/02/2023] Open
Abstract
A 3-hydroxypyridine degrading bacterium, designated strain DW-1, was isolated from petroleum contaminated soil in Liao River China. 16S rRNA-based phylogenetic analysis indicates that strain DW-1 belongs to genus Agrobacterium. The optimal cultivation temperature and pH for strain DW-1 with 3-hydroxypyridine were 30 °C and 8.0, respectively. Under optimal conditions, strain DW-1 could completely degrade up to 1500 mg/L of 3-hydroxypyridine in 66 h. The 3-hydroxypyridine degradation pathway of strain DW-1 was suggested by HPLC and LC-MS analysis. The first reaction of 3-hydroxypyridine degradation in strain DW-1 was α-hydroxylation so that the major metabolite 2,5-dihydroxypyridine was produced, and then 2,5-dihydroxypyridine was transformed by a Fe2+-dependent dioxygenase to form N-formylmaleamic acid. N-Formylmaleamic acid will be transformed to maleic acid and fumaric acid through maleamic acid. This is the first report of the 3-hydroxypyridine degradation pathway and the utilization of 3-hydroxypyridine by a Agrobacterium sp. It may be potentially used for the bioremediation of environments polluted with 3-hydroxypyridine.
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Affiliation(s)
- Shuxue Zhao
- Shandong Provincial Key Laboratory of Applied Mycology, College of Life Sciences, Qingdao Agricultural University, 700 Changcheng Road, Chengyang District, Qingdao, 266109 Shandong Province People’s Republic of China
| | - Chunhui Hu
- Shandong Provincial Key Laboratory of Applied Mycology, College of Life Sciences, Qingdao Agricultural University, 700 Changcheng Road, Chengyang District, Qingdao, 266109 Shandong Province People’s Republic of China
- Key Laboratory of Marine Environmental Science and Ecology, Ministry of Education, Ocean University of China, 238 Songling Road, Laoshan District, Qingdao, 266100 Shandong Province People’s Republic of China
| | - Lizhong Guo
- Shandong Provincial Key Laboratory of Applied Mycology, College of Life Sciences, Qingdao Agricultural University, 700 Changcheng Road, Chengyang District, Qingdao, 266109 Shandong Province People’s Republic of China
| | - Kuiran Li
- Key Laboratory of Marine Environmental Science and Ecology, Ministry of Education, Ocean University of China, 238 Songling Road, Laoshan District, Qingdao, 266100 Shandong Province People’s Republic of China
| | - Hao Yu
- Shandong Provincial Key Laboratory of Applied Mycology, College of Life Sciences, Qingdao Agricultural University, 700 Changcheng Road, Chengyang District, Qingdao, 266109 Shandong Province People’s Republic of China
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26
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Doan SH, Tran NKQ, Pham PH, Nguyen VHH, Nguyen NN, Ha PTM, Li S, Le HV, Le NTH, Tu TN, Phan NTS. A New Synthetic Pathway to Triphenylpyridines via Cascade Reactions Utilizing a New Iron-Organic Framework as a Recyclable Heterogeneous Catalyst. European J Org Chem 2019. [DOI: 10.1002/ejoc.201900094] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Son H. Doan
- Faculty of Chemical Engineering; VNU-HCM; HCMC University of Technology; 268 Ly Thuong Kiet District 10 Ho Chi Minh City Vietnam
| | - Nhu K. Q. Tran
- Faculty of Chemical Engineering; VNU-HCM; HCMC University of Technology; 268 Ly Thuong Kiet District 10 Ho Chi Minh City Vietnam
| | - Phuc H. Pham
- Faculty of Chemical Engineering; VNU-HCM; HCMC University of Technology; 268 Ly Thuong Kiet District 10 Ho Chi Minh City Vietnam
| | - Vu H. H. Nguyen
- Faculty of Chemical Engineering; VNU-HCM; HCMC University of Technology; 268 Ly Thuong Kiet District 10 Ho Chi Minh City Vietnam
| | - Ngoc N. Nguyen
- VNU-HCM; VNU-HCM; Center for Innovative Materials and Architectures; Quarter 6, Linh Trung Ward, Thu Duc District Ho Chi Minh City Vietnam
| | - Phuong T. M. Ha
- Faculty of Chemical Engineering; VNU-HCM; HCMC University of Technology; 268 Ly Thuong Kiet District 10 Ho Chi Minh City Vietnam
| | - Shuang Li
- Institute of ChemistryFunctional Materials; VNU-HCM; Technische Universität Berlin, BA2; Hardenbergstraße 40 10623 Berlin Germany
| | - Ha V. Le
- Faculty of Chemical Engineering; VNU-HCM; HCMC University of Technology; 268 Ly Thuong Kiet District 10 Ho Chi Minh City Vietnam
- Institute of ChemistryFunctional Materials; VNU-HCM; Technische Universität Berlin, BA2; Hardenbergstraße 40 10623 Berlin Germany
| | - Nhan T. H. Le
- Faculty of Chemical Engineering; VNU-HCM; HCMC University of Technology; 268 Ly Thuong Kiet District 10 Ho Chi Minh City Vietnam
| | - Thach N. Tu
- VNU-HCM; VNU-HCM; Center for Innovative Materials and Architectures; Quarter 6, Linh Trung Ward, Thu Duc District Ho Chi Minh City Vietnam
| | - Nam T. S. Phan
- Faculty of Chemical Engineering; VNU-HCM; HCMC University of Technology; 268 Ly Thuong Kiet District 10 Ho Chi Minh City Vietnam
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27
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Maleki A, Firouzi-Haji R. L-Proline functionalized magnetic nanoparticles: A novel magnetically reusable nanocatalyst for one-pot synthesis of 2,4,6-triarylpyridines. Sci Rep 2018; 8:17303. [PMID: 30470821 PMCID: PMC6251865 DOI: 10.1038/s41598-018-35676-x] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2018] [Accepted: 11/09/2018] [Indexed: 12/03/2022] Open
Abstract
In this work, an efficient method for the immobilization of L-proline on magnetic nanoparticles was offered and evaluated as a recoverable magnetic nanocatalyst for synthesis of 2,4,6-triarylpyridines through one-pot three-component reaction of acetophenone, aryl aldehydes and ammonium acetate. This article is the first report of the catalytic application of L-proline functionalized magnetic nanoparticles in organic reactions as a magnetic nanocatalyst. This novel magnetic nanocatalyst proved to be effective and provided the products in high to excellent yield under solvent-free conditions. The structure of obtained nanoparticles was characterized by Fourier transform infrared spectrophotometry (FT-IR), field-emission scanning electron microscopy (FE-SEM), thermogravimetric analysis (TGA) and energy-dispersive X-ray spectroscopy (EDX). TGA result revealed that it is stable up to 200 °C for using as a catalyst in organic reactions. FE-SEM image of the synthesized nanocatalyst showed that it has nearly core-shell spherical shape and uniform size distribution with an average size about 80 nm. Moreover, the catalyst could be easily recovered by facile separation by magnetic forces and recycled for several times without significant loss of its catalytic activity. The benefits of this study are simplicity, nontoxicity, low cost, simple workup, and an environmentally benign nature.
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Affiliation(s)
- Ali Maleki
- Catalysts and Organic Synthesis Research Laboratory, Department of Chemistry, Iran University of Science and Technology, Tehran, 16846-13114, Iran.
| | - Razieh Firouzi-Haji
- Catalysts and Organic Synthesis Research Laboratory, Department of Chemistry, Iran University of Science and Technology, Tehran, 16846-13114, Iran
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28
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S. Kamble S, S. Shankarling G. Amalgamation of CSR and DES: An Energy Efficient Protocol for the One-Pot Synthesis of 2,4,6- Triaryl Pyridine Derivatives. ChemistrySelect 2018. [DOI: 10.1002/slct.201801690] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Sujit S. Kamble
- Dyestuff Technology Department; Institute of Chemical Technology, N. P. Marg, Matunga; Mumbai- 400019 India
| | - Ganapati S. Shankarling
- Dyestuff Technology Department; Institute of Chemical Technology, N. P. Marg, Matunga; Mumbai- 400019 India
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29
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Ling F, Shen L, Pan Z, Fang L, Song D, Xie Z, Zhong W. B(C6F5)3-catalyzed oxidative deamination/cyclization cascade reaction of benzylamines and ketones for the synthesis of 2,4,6-triarylpyridines. Tetrahedron Lett 2018. [DOI: 10.1016/j.tetlet.2018.08.060] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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30
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Emami A, Ghafuri H, Kenari MK, Maleki A. Investigating the Catalytic Performance of Graphene Oxide –Polyaniline –Lignosulfonate Nanocomposite in the Synthesis of Polysubstituted Pyridines via a Four‐Component Reaction. ChemistrySelect 2018. [DOI: 10.1002/slct.201800783] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- Atefeh Emami
- Department Organic chemistryInstitution Iran university of science and technology, Address 1 Catalysts and Organic Synthesis Research Laboratory, Department of ChemistryIran University of Science and Technology P.O. Box 16846–13114 Tehran, I. R. Iran
| | - Hossein Ghafuri
- Department Organic chemistryInstitution Iran university of science and technology, Address 1 Catalysts and Organic Synthesis Research Laboratory, Department of ChemistryIran University of Science and Technology P.O. Box 16846–13114 Tehran, I. R. Iran
| | - Moghadaseh Keshvari Kenari
- Department Organic chemistryInstitution Iran university of science and technology, Address 1 Catalysts and Organic Synthesis Research Laboratory, Department of ChemistryIran University of Science and Technology P.O. Box 16846–13114 Tehran, I. R. Iran
| | - Ali Maleki
- Department Organic chemistryInstitution Iran university of science and technology, Address 1 Catalysts and Organic Synthesis Research Laboratory, Department of ChemistryIran University of Science and Technology P.O. Box 16846–13114 Tehran, I. R. Iran
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31
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Rekunge DS, Kale IA, Chaturbhuj GU. An efficient, green solvent-free protocol for the synthesis of 2,4,6-triarylpyridines using reusable heterogeneous activated Fuller’s earth catalyst. JOURNAL OF THE IRANIAN CHEMICAL SOCIETY 2018. [DOI: 10.1007/s13738-018-1434-8] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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32
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Liu J, Zhao S, Yan X, Wang Z, Zhang Y, Zhao P, Fang W, Zhuo K, Yue Y. Dual Roles of α,β-Unsaturated Oximes in Copper Catalyzed [3+3] Cyclization: Construction of 2,4,6-Trisubstituted Pyridines. ASIAN J ORG CHEM 2018. [DOI: 10.1002/ajoc.201800318] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Jianming Liu
- Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, School of Chemistry and Chemical Engineering, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals; Henan Normal University; Xinxiang, Henan 453007 China
| | - Shufang Zhao
- Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, School of Chemistry and Chemical Engineering, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals; Henan Normal University; Xinxiang, Henan 453007 China
| | - Xuyang Yan
- Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, School of Chemistry and Chemical Engineering, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals; Henan Normal University; Xinxiang, Henan 453007 China
| | - Zhixian Wang
- Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, School of Chemistry and Chemical Engineering, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals; Henan Normal University; Xinxiang, Henan 453007 China
| | - Yanyan Zhang
- Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, School of Chemistry and Chemical Engineering, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals; Henan Normal University; Xinxiang, Henan 453007 China
| | - Peizheng Zhao
- Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, School of Chemistry and Chemical Engineering, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals; Henan Normal University; Xinxiang, Henan 453007 China
| | - Wenhan Fang
- Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, School of Chemistry and Chemical Engineering, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals; Henan Normal University; Xinxiang, Henan 453007 China
| | - Kelei Zhuo
- Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, School of Chemistry and Chemical Engineering, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals; Henan Normal University; Xinxiang, Henan 453007 China
| | - Yuanyuan Yue
- Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, School of Chemistry and Chemical Engineering, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals; Henan Normal University; Xinxiang, Henan 453007 China
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33
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Liu J, Yan X, Yue Y, Zhao S, Zhang J, Sun Y, Zhuo K. CO
2
‐Promoted C=N Bond Cleavage of Amidines Leading to Multi‐Substituted Pyridines. Adv Synth Catal 2018. [DOI: 10.1002/adsc.201800401] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Jianming Liu
- Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine ChemicalsKey Laboratory of Green Chemical Media and ReactionsMinistry of Education, School of Chemistry and Chemical EngineeringHenan Normal University Xinxiang Henan 453007 People's Republic of China
| | - Xuyang Yan
- Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine ChemicalsKey Laboratory of Green Chemical Media and ReactionsMinistry of Education, School of Chemistry and Chemical EngineeringHenan Normal University Xinxiang Henan 453007 People's Republic of China
| | - Yuanyuan Yue
- Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine ChemicalsKey Laboratory of Green Chemical Media and ReactionsMinistry of Education, School of Chemistry and Chemical EngineeringHenan Normal University Xinxiang Henan 453007 People's Republic of China
| | - Shufang Zhao
- Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine ChemicalsKey Laboratory of Green Chemical Media and ReactionsMinistry of Education, School of Chemistry and Chemical EngineeringHenan Normal University Xinxiang Henan 453007 People's Republic of China
| | - Jia Zhang
- Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine ChemicalsKey Laboratory of Green Chemical Media and ReactionsMinistry of Education, School of Chemistry and Chemical EngineeringHenan Normal University Xinxiang Henan 453007 People's Republic of China
| | - Yangyang Sun
- Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine ChemicalsKey Laboratory of Green Chemical Media and ReactionsMinistry of Education, School of Chemistry and Chemical EngineeringHenan Normal University Xinxiang Henan 453007 People's Republic of China
| | - Kelei Zhuo
- Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine ChemicalsKey Laboratory of Green Chemical Media and ReactionsMinistry of Education, School of Chemistry and Chemical EngineeringHenan Normal University Xinxiang Henan 453007 People's Republic of China
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34
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Zhang X, Wang P, Han J, Guo X, Chen B. CuBr-Catalyzed Synthesis of Indolizines from Pyridine, Acetophenone and Chalcone under Solvent-Free Conditions. ChemistrySelect 2018. [DOI: 10.1002/slct.201800263] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Xueguo Zhang
- State Key Laboratory of Applied Organic Chemistry; Lanzhou University; Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province; Lanzhou 730000 P. R. of China
| | - Peigen Wang
- State Key Laboratory of Applied Organic Chemistry; Lanzhou University; Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province; Lanzhou 730000 P. R. of China
| | - Jianwei Han
- State Key Laboratory of Applied Organic Chemistry; Lanzhou University; Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province; Lanzhou 730000 P. R. of China
| | - Xin Guo
- State Key Laboratory of Applied Organic Chemistry; Lanzhou University; Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province; Lanzhou 730000 P. R. of China
| | - Baohua Chen
- State Key Laboratory of Applied Organic Chemistry; Lanzhou University; Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province; Lanzhou 730000 P. R. of China
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35
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Guo X, Yang X, Qin M, Liu Y, Yang Y, Chen B. Copper-Catalyzed Cyclization of Ketoxime Carboxylates and N
-Aryl Glycine Esters for the Synthesis of Pyridines. ASIAN J ORG CHEM 2018. [DOI: 10.1002/ajoc.201700703] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Xin Guo
- State Key Laboratory of Applied Organic Chemistry; Lanzhou University; Lanzhou 730000 China), E-mai
| | - Xueying Yang
- State Key Laboratory of Applied Organic Chemistry; Lanzhou University; Lanzhou 730000 China), E-mai
| | - Mingda Qin
- State Key Laboratory of Applied Organic Chemistry; Lanzhou University; Lanzhou 730000 China), E-mai
| | - Yafeng Liu
- State Key Laboratory of Applied Organic Chemistry; Lanzhou University; Lanzhou 730000 China), E-mai
| | - Yuting Yang
- State Key Laboratory of Applied Organic Chemistry; Lanzhou University; Lanzhou 730000 China), E-mai
| | - Baohua Chen
- State Key Laboratory of Applied Organic Chemistry; Lanzhou University; Lanzhou 730000 China), E-mai
- Zhongwei High-tech Institute of Lanzhou University; Zhongwei Ningxia 755500 China
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