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Sharma J, Champagne PA. Mechanisms of the Gewald Synthesis of 2-Aminothiophenes from Elemental Sulfur. J Org Chem 2024; 89:9609-9619. [PMID: 38913830 DOI: 10.1021/acs.joc.4c01189] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/26/2024]
Abstract
The Gewald reaction is a well-established one-pot method to access 2-aminothiophenes from carbonyl compounds, activated acetonitriles, and elemental sulfur. To elucidate the reaction's poorly understood mechanism, with regard to the decomposition of sulfur and polysulfide intermediates, we have performed a comprehensive computational study using density functional theory (DFT) calculations at the M06-2X (or ωB97X-D)/aug-cc-pV(T + d)Z/SMD(C2H5OH) level of theory. The results show that the reaction is initiated by a Knoevenagel-Cope condensation, followed by opening of the elemental sulfur, leading to polysulfide formation. The polysulfide intermediates can interconvert and decompose using various mechanisms including unimolecular cyclization, nucleophilic degradation, and scrambling. Protonation of the polysulfides changes their electrophilic behavior and provides a kinetically favorable pathway for their decomposition. This protonation-induced intermolecular degradation is feasible for polysulfides of all lengths, but unimolecular decomposition is kinetically favored for long polysulfides (≥6 sulfur atoms). None of the pathways provide any thermodynamic benefit due to the lack of resonance-stabilized leaving group, and a complex equilibrium of polysulfides of all lengths is expected in solution. Cyclization of the monosulfide with aromatization to the thiophene product is the only driving force behind the reaction, funneling all of the various intermediates into the observed product in a thermodynamically controlled process.
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Affiliation(s)
- Jyoti Sharma
- Department of Chemistry and Environmental Science, New Jersey Institute of Technology, Newark, New Jersey 07102, United States
| | - Pier Alexandre Champagne
- Department of Chemistry and Environmental Science, New Jersey Institute of Technology, Newark, New Jersey 07102, United States
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2
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Liu H, He GC, Zhao CY, Zhang XX, Ji DW, Hu YC, Chen QA. Redox-Divergent Construction of (Dihydro)thiophenes with DMSO. Angew Chem Int Ed Engl 2021; 60:24284-24291. [PMID: 34460141 DOI: 10.1002/anie.202109026] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2021] [Indexed: 11/10/2022]
Abstract
Thiophene-based rings are one of the most widely used building blocks for the synthesis of sulfur-containing molecules. Inspired by the redox diversity of these features in nature, we demonstrate herein a redox-divergent construction of dihydrothiophenes, thiophenes, and bromothiophenes from the respective readily available allylic alcohols, dimethyl sulfoxide (DMSO), and HBr. The redox-divergent selectivity could be manipulated mainly by controlling the dosage of DMSO and HBr. Mechanistic studies suggest that DMSO simultaneously acts as an oxidant and a sulfur donor. The synthetic potentials of the products as platform molecules were also demonstrated by various derivatizations, including the preparation of bioactive and functional molecules.
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Affiliation(s)
- Heng Liu
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian, 116023, China.,University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Gu-Cheng He
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian, 116023, China.,University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Chao-Yang Zhao
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian, 116023, China.,University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Xiang-Xin Zhang
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian, 116023, China.,University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Ding-Wei Ji
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian, 116023, China
| | - Yan-Cheng Hu
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian, 116023, China
| | - Qing-An Chen
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian, 116023, China.,University of Chinese Academy of Sciences, Beijing, 100049, China
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3
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Redox‐Divergent Construction of (Dihydro)thiophenes with DMSO. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202109026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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4
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Gediya P, Vyas VK, Carafa V, Sitwala N, Della Torre L, Poziello A, Kurohara T, Suzuki T, Sanna V, Raguraman V, Suthindhiran K, Ghosh D, Bhatia D, Altucci L, Ghate MD. Discovery of novel tetrahydrobenzo[b]thiophene-3-carbonitriles as histone deacetylase inhibitors. Bioorg Chem 2021; 110:104801. [PMID: 33756235 DOI: 10.1016/j.bioorg.2021.104801] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2021] [Revised: 02/27/2021] [Accepted: 03/01/2021] [Indexed: 10/22/2022]
Abstract
The discovery and development of isoform-selective histone deacetylase (HDAC) inhibitor is a challenging task because of the sequence homology among HDAC enzymes. In the present work, novel tetrahydro benzo[b]thiophene-3-carbonitrile based benzamides were designed, synthesized, and evaluated as HDAC inhibitors. Pharmacophore modeling was our main design strategy, and two novel series of tetrahydro benzo[b]thiophene-3-carbonitrile derivatives with piperidine linker (series 1) and piperazine linker (series 2) were identified as HDAC inhibitors. Among all the synthesised compounds, 9h with 4-(aminomethyl) piperidine linker and 14n with piperazine linker demonstrated good activity against human HDAC1 and HDAC6, respectively. Both the compounds also exhibited good antiproliferative activity against several human cancer cell lines. Both these compounds (9h and 14n) also induced cell cycle arrest and apoptosis in U937 and MDA-MB-231 cancer cells. Overall, for the first time, this research discovered potent isoform-selective HDAC inhibitors using cyclic linker instead of the aliphatic chain and aromatic ring system, which were reported in known HDAC inhibitors.
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Affiliation(s)
- Piyush Gediya
- Department of Pharmaceutical Chemistry, Institute of Pharmacy, Nirma University, Ahmedabad 382481, Gujarat, India
| | - Vivek K Vyas
- Department of Pharmaceutical Chemistry, Institute of Pharmacy, Nirma University, Ahmedabad 382481, Gujarat, India
| | - Vincenzo Carafa
- Department of Precision Medicine, Università degli Studi della Campania "Luigi Vanvitelli", Via L. De Crecchio 7, 80138 Naples, Italy
| | - Nikum Sitwala
- Department of Pharmaceutical Chemistry, Institute of Pharmacy, Nirma University, Ahmedabad 382481, Gujarat, India
| | - Laura Della Torre
- Department of Precision Medicine, Università degli Studi della Campania "Luigi Vanvitelli", Via L. De Crecchio 7, 80138 Naples, Italy
| | - Angelita Poziello
- Department of Precision Medicine, Università degli Studi della Campania "Luigi Vanvitelli", Via L. De Crecchio 7, 80138 Naples, Italy
| | - Takashi Kurohara
- The Institute of Scientific and Industrial Research (ISIR), Osaka University, Mihogaoka, Ibarakishi, Osaka 567-0047, Japan
| | - Takayoshi Suzuki
- The Institute of Scientific and Industrial Research (ISIR), Osaka University, Mihogaoka, Ibarakishi, Osaka 567-0047, Japan
| | - Vinod Sanna
- Piramal Pharma Solution, Plot-18 Pharmaceutical Special Economic Zone, Sarkhej-Bawla, NH-8A, Ahmedabad, Gujarat 382213, India
| | - Varalakshmi Raguraman
- School of Bio-Sciences and Technology, Vellore Institute of Technology, Vellore, Tamilnadu, India
| | - K Suthindhiran
- School of Bio-Sciences and Technology, Vellore Institute of Technology, Vellore, Tamilnadu, India
| | - Debarpan Ghosh
- Department of Biological Engineering, Indian Institute of Technology, Gandhinagar 382355, Gujarat, India
| | - Dhiraj Bhatia
- Department of Biological Engineering, Indian Institute of Technology, Gandhinagar 382355, Gujarat, India
| | - Lucia Altucci
- Department of Precision Medicine, Università degli Studi della Campania "Luigi Vanvitelli", Via L. De Crecchio 7, 80138 Naples, Italy.
| | - Manjunath D Ghate
- Department of Pharmaceutical Chemistry, Institute of Pharmacy, Nirma University, Ahmedabad 382481, Gujarat, India.
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5
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Huang G, Li J, Li J, Li J, Sun M, Zhou P, Chen L, Huang Y, Jiang S, Li Y. Access to Substituted Thiophenes through Xanthate-Mediated Vinyl C(sp 2)-Br Bond Cleavage and Heterocyclization of Bromoenynes. J Org Chem 2020; 85:13037-13049. [PMID: 32909752 DOI: 10.1021/acs.joc.0c01733] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
An environmentally sustainable strategy for the chemoselective heterocyclization of bromoenynes through a transition-metal-free sulfuration/cyclization process is reported. Using inexpensive and safe EtOCS2K as a thiol surrogate and tetrabutylphosphonium bromide and H2O as a mixed solvent, the reaction provided a range of substituted thiophenes in moderate to good yields. In addition, 2,3,4,5-tetrasubstituted thiophenes were able to be prepared under mild reaction conditions by electrophilic heterocyclization with NH4I and EtOCS2K in good yields.
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Affiliation(s)
- Guoling Huang
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, Guangdong Province 529090, China
| | - Jian Li
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, Guangdong Province 529090, China
| | - Jianrong Li
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, Guangdong Province 529090, China
| | - Jiaming Li
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, Guangdong Province 529090, China
| | - Minghua Sun
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, Guangdong Province 529090, China
| | - Peng Zhou
- College of Chemistry, Guangdong University of Petrochemical Technology, Guangdu 2nd road, Maoming, Guangdong Province 525000, China
| | - Lu Chen
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, Guangdong Province 529090, China
| | - Yubing Huang
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, Guangdong Province 529090, China
| | - Shaohua Jiang
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, Guangdong Province 529090, China
| | - Yibiao Li
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, Guangdong Province 529090, China
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6
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Chiarotto I, Mattiello L, Feroci M. The Electrogenerated Cyanomethyl Anion: An Old Base Still Smart. Acc Chem Res 2019; 52:3297-3308. [PMID: 31714056 DOI: 10.1021/acs.accounts.9b00465] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
The cathodic reduction of acetonitrile solutions containing a tetraalkylammonium salt leads to the formation of the cyanomethyl anion (-CH2CN, cyanomethanide). This electrolysis can be carried out under very simple experimental conditions (constant-current electrolyses), using various cathodic materials, controlling the amount of base by simply controlling the amount of charge. Despite the fact that the mechanism for this electrochemical reaction is still debated (and it depends on the cathodic material), the outcome of the electrolysis is the formation of a strong base, -CH2CN (pKa 31.3 for acetonitrile in DMSO). The chemical behavior of this electrogenerated base (EGB) strongly depends on its counterion, which in this case is a tetraalkylammonium cation, with a low charge density and thus not coordinated. The very weak interaction between R4N+ and -CH2CN renders the cyanomethyl anion a "naked" ion, and thus highly reactive. In particular, the cyanomethyl anion can react as a base and as a nucleophile. In the first case, it behaves as a strong base and, after deprotonation of a weak acidic substrate, transforms itself into a solvent molecule, acetonitrile, thus generating no byproducts. In the second case, the reactivity as a nucleophile of the cyanomethyl anion obviously depends on the reaction partner. When an electrophile is present in the reaction mixture, a cyanomethylation is obtained (e.g., with aromatic aldehydes, possessing no acidic hydrogen atoms, which undergo nucleophilic attack on the carbonyl carbon atom by -CH2CN); on the contrary, when no reagent is present other than acetonitrile and tetraalkylammonium salt, an attack on the parent molecule leads to the acetonitrile dimer, 3-aminocrotononitrile, which in turn can behave as a base and/or as a nucleophile. In this regard, some authors report that it is preferable to carry out the electrogeneration of the cyanomethyl anion under different experimental conditions, i.e., using an undivided cell and a sacrificial magnesium anode. In this way, a Grignard-type reagent is formed (Mg(CH2CN)2) which highly stabilizes the cyanomethyl anion, preventing its dimerization. It should be noted that in our laboratory the electrogenerated tetraalkylammonium cyanomethanide was extensively used in various reactions (both acid-base and nucleophile-electrophile, vide infra), and in almost no case, the amount of acetonitrile dimer formed exceeded 5%, confirming the validity of this electrochemical methodology to generate a very efficient base. Moreover, when in the reaction mixture both a weak acid and an electrophile are present, the prevalent reactivity of the cyanomethyl anion is as a base, leaving the possibility of a cyanomethylation reaction to those cases in which no acidic substrate is present. We have successfully used the electrogenerated cyanomethyl anion in many base-induced reactions, as the synthesis of the β-lactam ring (chiral or not), the insertion of carbon dioxide into amines and amino alcohols, the activation of elemental sulfur and insertion into carbonyl compounds, the selective alkylation of difunctional compounds, etc.
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Affiliation(s)
- Isabella Chiarotto
- Dipartimento di Scienze di Base e Applicate per l’Ingegneria (SBAI), Sapienza University of Rome, via del Castro Laurenziano, 7, 00161, Roma, Italy
| | - Leonardo Mattiello
- Dipartimento di Scienze di Base e Applicate per l’Ingegneria (SBAI), Sapienza University of Rome, via del Castro Laurenziano, 7, 00161, Roma, Italy
| | - Marta Feroci
- Dipartimento di Scienze di Base e Applicate per l’Ingegneria (SBAI), Sapienza University of Rome, via del Castro Laurenziano, 7, 00161, Roma, Italy
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7
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Wan Q, Li S, Kang Q, Yuan Y, Du Y. Chiral-at-Metal Rh(III) Complex Catalyzed Cascade Reduction-Michael Addition Reaction. J Org Chem 2019; 84:15201-15211. [PMID: 31661265 DOI: 10.1021/acs.joc.9b02243] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
An enantioselective three-component cascade reduction-Michael addition reaction catalyzed by chiral-at-metal Rh(III) complexes has been developed. With a Hantzsch ester as the hydride source, a number of malononitrile derivatives were prepared in good yields and excellent enantioselectivities. A model that accounts for the origin and influence factors of the stereoselectivity has been proposed based on experiments.
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Affiliation(s)
- Qian Wan
- College of Chemistry , Fuzhou University , Fuzhou 350108 , P. R. China
| | - Shiwu Li
- Key Laboratory of Coal to Ethylene Glycol and Its Related Technology, Center for Excellence in Molecular Synthesis , Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences , 155 Yangqiao Road West , Fuzhou 350002 , P. R. China
| | - Qiang Kang
- Key Laboratory of Coal to Ethylene Glycol and Its Related Technology, Center for Excellence in Molecular Synthesis , Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences , 155 Yangqiao Road West , Fuzhou 350002 , P. R. China
| | - Yaofeng Yuan
- College of Chemistry , Fuzhou University , Fuzhou 350108 , P. R. China
| | - Yu Du
- Key Laboratory of Coal to Ethylene Glycol and Its Related Technology, Center for Excellence in Molecular Synthesis , Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences , 155 Yangqiao Road West , Fuzhou 350002 , P. R. China
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8
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Chen L, Min H, Zeng W, Zhu X, Liang Y, Deng G, Yang Y. Transition-Metal-Free Sulfuration/Annulation of Alkenes: Economical Access to Thiophenes Enabled by the Cleavage of Multiple C-H Bonds. Org Lett 2018; 20:7392-7395. [PMID: 30460854 DOI: 10.1021/acs.orglett.8b03078] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
A novel, atom economical, and transition-metal-free strategy for the synthesis of thiophenes from substituted buta-1-enes with potassium sulfide has been presented. The reaction achieves double C-S bond formations via cleavage of multiple C-H bonds and provides an efficient approach to access various functionalized thiophenes. Moreover, the strategy can also be used for the synthesis of thiophenes from 1,4-diaryl-1,3-dienes. Mechanistically, DMSO plays a role of oxidant and S3•- in situ generated from K2S is involved.
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Affiliation(s)
- Liang Chen
- National & Local Joint Engineering Laboratory for New Petro-chemical Materials and Fine Utilization of Resources, Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research, Ministry of Education, Key Laboratory of the Assembly and Application of Organic Functional Molecules of Hunan Province , Hunan Normal University , Changsha , Hunan 410081 , China
| | - Hao Min
- National & Local Joint Engineering Laboratory for New Petro-chemical Materials and Fine Utilization of Resources, Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research, Ministry of Education, Key Laboratory of the Assembly and Application of Organic Functional Molecules of Hunan Province , Hunan Normal University , Changsha , Hunan 410081 , China
| | - Weilan Zeng
- National & Local Joint Engineering Laboratory for New Petro-chemical Materials and Fine Utilization of Resources, Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research, Ministry of Education, Key Laboratory of the Assembly and Application of Organic Functional Molecules of Hunan Province , Hunan Normal University , Changsha , Hunan 410081 , China
| | - Xiaoming Zhu
- National & Local Joint Engineering Laboratory for New Petro-chemical Materials and Fine Utilization of Resources, Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research, Ministry of Education, Key Laboratory of the Assembly and Application of Organic Functional Molecules of Hunan Province , Hunan Normal University , Changsha , Hunan 410081 , China
| | - Yun Liang
- National & Local Joint Engineering Laboratory for New Petro-chemical Materials and Fine Utilization of Resources, Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research, Ministry of Education, Key Laboratory of the Assembly and Application of Organic Functional Molecules of Hunan Province , Hunan Normal University , Changsha , Hunan 410081 , China
| | - Guobo Deng
- National & Local Joint Engineering Laboratory for New Petro-chemical Materials and Fine Utilization of Resources, Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research, Ministry of Education, Key Laboratory of the Assembly and Application of Organic Functional Molecules of Hunan Province , Hunan Normal University , Changsha , Hunan 410081 , China
| | - Yuan Yang
- National & Local Joint Engineering Laboratory for New Petro-chemical Materials and Fine Utilization of Resources, Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research, Ministry of Education, Key Laboratory of the Assembly and Application of Organic Functional Molecules of Hunan Province , Hunan Normal University , Changsha , Hunan 410081 , China
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9
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Erfaninia N, Tayebee R, Foletto E, Amini M, Dusek M, Zonoz F. Preparation of magnetically recyclable ZnFe
2
O
4
nanoparticles by easy single‐step co‐precipitation method and their catalytic performance in the synthesis of 2‐aminothiophenes. Appl Organomet Chem 2017. [DOI: 10.1002/aoc.4047] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- N. Erfaninia
- Department of ChemistryHakim Sabzevari University Sabzevar 96179‐76487 Iran
| | - R. Tayebee
- Department of ChemistryHakim Sabzevari University Sabzevar 96179‐76487 Iran
| | - E.L. Foletto
- Department of Chemical EngineeringFederal University of Santa Maria Santa Maria 97105‐900 Brazil
| | - M.M. Amini
- Department of ChemistryShahid Beheshti University, G. C. Tehran Iran
| | - M. Dusek
- Institute of Physics of the Czech Academy of Sciences Na Slovance 2 18221 Prague 8 Czech Republic
| | - F.M. Zonoz
- Department of ChemistryHakim Sabzevari University Sabzevar 96179‐76487 Iran
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10
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Wilding B, Klempier N. Newest Developments in the Preparation of Thieno[2,3-d]pyrimidines. ORG PREP PROCED INT 2017. [DOI: 10.1080/00304948.2017.1320513] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Affiliation(s)
- B. Wilding
- Institute of Organic Chemistry, Graz University of Technology, Stremayrgasse 9, 8010 Graz, Austria
| | - N. Klempier
- Institute of Organic Chemistry, Graz University of Technology, Stremayrgasse 9, 8010 Graz, Austria
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11
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Javadi F, Tayebee R, Bahramian B. TiO
2
/nanoclinoptilolite as an efficient nanocatalyst in the synthesis of substituted 2‐aminothiophenes. Appl Organomet Chem 2017. [DOI: 10.1002/aoc.3779] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Farzad Javadi
- Department of Chemistry, School of SciencesHakim Sabzevari University Sabzevar 96179‐76487 Iran
| | - Reza Tayebee
- Department of Chemistry, School of SciencesHakim Sabzevari University Sabzevar 96179‐76487 Iran
| | - Bahram Bahramian
- Faculty of ChemistryShahrood University of Technology Shahrood Iran
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12
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Papa M, Chiarotto I, Feroci M. Willgerodt-Kindler Reaction of Benzaldehydes: A Comparative Study for a Sustainable Synthesis of Secondary Thiobenzamides. ChemistrySelect 2017. [DOI: 10.1002/slct.201700507] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Maria Papa
- Department of Scienze di Base e Applicate per l'Ingegneria; Sapienza Università di Roma; via Castro Laurenziano, 7 00161 Roma Italy
| | - Isabella Chiarotto
- Department of Scienze di Base e Applicate per l'Ingegneria; Sapienza Università di Roma; via Castro Laurenziano, 7 00161 Roma Italy
| | - Marta Feroci
- Department of Scienze di Base e Applicate per l'Ingegneria; Sapienza Università di Roma; via Castro Laurenziano, 7 00161 Roma Italy
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13
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Affiliation(s)
- Thanh Binh Nguyen
- Institut de Chimie des Substances Naturelles, CNRS UPR 2301; Université Paris-Sud, Université Paris-Saclay; 1 avenue de la Terrasse 91198 Gif-sur-Yvette France
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14
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Sbei N, Haouas B, Chebbi M, Smida YB, Arfaoui Y, Boujlel K, Benkhoud ML. A convenient synthesis of alkyl-2-(2-imino-4-oxothiazolidin-5-ylidene)acetate derivatives involving an electrogenerated base of acetonitrile. J Sulphur Chem 2016. [DOI: 10.1080/17415993.2016.1259416] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Najoua Sbei
- Department of Chemistry, Faculty of Sciences, Laboratory of Analytic Chemistry and Electrochemistry, University of Tunis, El Manar, Tunisia
| | - Baya Haouas
- Department of Chemistry, Faculty of Sciences, Laboratory of Analytic Chemistry and Electrochemistry, University of Tunis, El Manar, Tunisia
| | - Monia Chebbi
- Department of Chemistry, Faculty of Sciences, Laboratory of Physical Chemistry of Condensed Materials, University of Tunis, El Manar, Tunisia
| | - Youssef Ben Smida
- Department of Chemistry, Faculty of Sciences, Laboratory of Analytic Chemistry and Electrochemistry, University of Tunis, El Manar, Tunisia
- Department of Chemistry, Faculty of Sciences, Laboratory of Physical Chemistry of Condensed Materials, University of Tunis, El Manar, Tunisia
- Laboratory of Physical Chemistry of Microstructures and Micro-systems, University of Cartage, Institut Préparatoire aux Etudes Scientifiques et Techniques, La Marsa, Tunisia
| | - Youssef Arfaoui
- Department of Chemistry, Faculty of Sciences, Laboratory of Physical Chemistry of Condensed Materials, University of Tunis, El Manar, Tunisia
| | - Khaled Boujlel
- Department of Chemistry, Faculty of Sciences, Laboratory of Analytic Chemistry and Electrochemistry, University of Tunis, El Manar, Tunisia
| | - Mohamed Lamine Benkhoud
- Laboratory of Physical Chemistry of Microstructures and Micro-systems, University of Cartage, Institut Préparatoire aux Etudes Scientifiques et Techniques, La Marsa, Tunisia
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15
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Hamrouni K, Saied T, El Abed N, Ahmed SBH, Boujlel K, Khoud MLB. Electrogenerated base-promoted synthesis and antimicrobial activity of 2-(1,3-dithian-2-ylidene)-2-arylacetonitrile and 2-(1,3-dithiolan-2-ylidene)-2-arylacetonitrile. J Sulphur Chem 2015. [DOI: 10.1080/17415993.2015.1005620] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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16
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Efficient electrochemical N-alkylation of N-boc-protected 4-aminopyridines: towards new biologically active compounds. ISRN ORGANIC CHEMISTRY 2014; 2014:621592. [PMID: 24955255 PMCID: PMC4041018 DOI: 10.1155/2014/621592] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/22/2013] [Accepted: 01/21/2014] [Indexed: 11/22/2022]
Abstract
The use of electrogenerated acetonitrile anion allows the alkylation of N-Boc-4-aminopyridine in very high yields, under mild conditions and without by-products. The high reactivity of this base is due to its large tetraethylammonium counterion, which leaves the acetonitrile anion “naked.” The deprotection of the obtained compounds led to high yields in N-alkylated 4-aminopyridines. Nonsymmetrically dialkylated 4-aminopyridines were obtained by subsequent reaction of monoalkylated ones with t-BuOK and alkyl halides, while symmetrically dialkylated 4-aminopyridines were obtained by direct reaction of 4-aminopyridine with an excess of t-BuOK and alkyl halides. Some mono- and dialkyl-4-aminopyridines were selected to evaluate antifungal and antiprotozoal activity; the dialkylated 4-aminopyridines 3ac, 3ae and 3ff showed antifungal towards Cryptococcus neoformans; whereas 3cc, 3ee and 3ff showed antiprotozoal activity towards Leishmania infantum and Plasmodium falciparum.
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17
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Qu Y, Li Z, Xiang H, Zhou X. Copper(II)-Catalyzed Reactions of Dimethylformamide with Phenylacetonitrile and Sulfur to FormN,N-Dimethylthioamides. Adv Synth Catal 2013. [DOI: 10.1002/adsc.201300321] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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18
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Bovine serum albumin-catalyzed one-pot synthesis of 2-aminothiophenes via Gewald reaction. ACTA ACUST UNITED AC 2013. [DOI: 10.1016/j.molcatb.2013.05.014] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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19
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Gao L, Xia S, Wu N, Tao S, Feng Y, Rong L. Efficient Preparation of 5-Amino-4-cyano-N-(cyclopropylcarbamoyl)-3-aryl-2,3-dihydrothiophene-2-carboxamide Derivatives Without Using Any Other Catalysts. SYNTHETIC COMMUN 2013. [DOI: 10.1080/00397911.2012.721919] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- Lijiu Gao
- a Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials , College of Chemistry and Chemical Engineering, Jiangsu Normal University , Xuzhou , China
| | - Sheng Xia
- a Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials , College of Chemistry and Chemical Engineering, Jiangsu Normal University , Xuzhou , China
| | - Nan Wu
- b Department of Aviation Oil and Material , Xuzhou Airforce College , Xuzhou , China
| | - Shimin Tao
- a Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials , College of Chemistry and Chemical Engineering, Jiangsu Normal University , Xuzhou , China
| | - Youjian Feng
- a Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials , College of Chemistry and Chemical Engineering, Jiangsu Normal University , Xuzhou , China
| | - Liangce Rong
- a Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials , College of Chemistry and Chemical Engineering, Jiangsu Normal University , Xuzhou , China
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20
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Childers KK, Haidle AM, Machacek MR, Rogers JP, Romeo E. A one-step, multi-component reaction for the synthesis of fully substituted 5-amino-4-carboxamidthiazoles. Tetrahedron Lett 2013. [DOI: 10.1016/j.tetlet.2013.03.014] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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21
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Tayebee R, Javadi F, Argi G. Easy single-step preparation of ZnO nano-particles by sedimentation method and studying their catalytic performance in the synthesis of 2-aminothiophenes via Gewald reaction. ACTA ACUST UNITED AC 2013. [DOI: 10.1016/j.molcata.2012.11.011] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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22
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Rezaei-Seresht E, Tayebee R, Yasemi M. KG-60-Piperazine as a New Heterogeneous Catalyst for Gewald Three-Component Reaction. SYNTHETIC COMMUN 2013. [DOI: 10.1080/00397911.2012.674607] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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23
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Chen LH, Chuang YS, Narhe BD, Sun CM. A concise synthesis of 2-(2-aminothiophene)-benzimidazoles by one-pot multicomponent reaction. RSC Adv 2013. [DOI: 10.1039/c3ra41545g] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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24
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One-pot synthesis of thieno [2,3-d] pyrimidin-4-ol derivatives mediated by polyphosphonic anhydride. Tetrahedron Lett 2012. [DOI: 10.1016/j.tetlet.2012.06.017] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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25
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Feroci M, De Vita D, Scipione L, Sotgiu G, Tortorella S. Electrogenerated acetonitrile anion induced selective N-alkylation of bifunctional compounds. Tetrahedron Lett 2012. [DOI: 10.1016/j.tetlet.2012.03.038] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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26
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Recent Advances in the Synthesis of Thiophenes and Benzothiophenes. TOPICS IN HETEROCYCLIC CHEMISTRY 2012. [DOI: 10.1007/7081_2012_75] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
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27
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Huang XG, Liu J, Ren J, Wang T, Chen W, Zeng BB. A facile and practical one-pot synthesis of multisubstituted 2-aminothiophenes via imidazole-catalyzed Gewald reaction. Tetrahedron 2011. [DOI: 10.1016/j.tet.2011.06.061] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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28
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Moeinpour F, Omidinia R, Dorostkar-Ahmadi N, Khoshdeli B. Cesium Carbonate as a Heterogeneous Base Catalyst for Synthesis of 2-Aminothiophenes via Gewald Reaction. B KOREAN CHEM SOC 2011. [DOI: 10.5012/bkcs.2011.32.6.2091] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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29
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Tang J, Xu DQ, Xia AB, Wang YF, Jiang JR, Luo SP, Xu ZY. An Organocatalytic Domino Thia-Michael/Aldol Condensation Reaction: Highly Enantioselective Synthesis of Functionalized Dihydrothiophenes. Adv Synth Catal 2010. [DOI: 10.1002/adsc.201000245] [Citation(s) in RCA: 58] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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30
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Cheng Y, Peng JH, Li JQ. Orthogonal Synthesis of Densely Functionalized Pyrroles and Thiophenes from the Reactions of Imidazo[1,5-a]pyridine Carbene-Derived Zwitterions with Electron-Deficient Alkynes. J Org Chem 2010; 75:2382-8. [DOI: 10.1021/jo100225r] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Ying Cheng
- College of Chemistry, Beijing Normal University, Beijing 100875, China
| | - Jiang-Hua Peng
- College of Chemistry, Beijing Normal University, Beijing 100875, China
| | - Jia-Qi Li
- College of Chemistry, Beijing Normal University, Beijing 100875, China
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31
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Huang Y, Dömling A. The Gewald multicomponent reaction. Mol Divers 2010; 15:3-33. [PMID: 20191319 DOI: 10.1007/s11030-010-9229-6] [Citation(s) in RCA: 111] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2009] [Accepted: 02/03/2010] [Indexed: 10/19/2022]
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32
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Bianchi G, Chiarini M, Marinelli F, Rossi L, Arcadi A. Product Selectivity Control in the Heteroannulation ofo-(1-Alkynyl)benzamides. Adv Synth Catal 2010. [DOI: 10.1002/adsc.200900668] [Citation(s) in RCA: 66] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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33
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Boros È, Earle MJ, Gîlea MA, Metlen A, Mudring AV, Rieger F, Robertson AJ, Seddon KR, Tomaszowska AA, Trusov L, Vyle JS. On the dissolution of non-metallic solid elements (sulfur, selenium, tellurium and phosphorus) in ionic liquids. Chem Commun (Camb) 2010; 46:716-8. [DOI: 10.1039/b910469k] [Citation(s) in RCA: 70] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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34
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Tissaoui K, Raouafi N, Boujlel K. Electrogenerated base promoted synthesis of N-substituted-4-hydroxy-4-methylthiazolidine-2-thione derivatives. JOURNAL OF CHEMICAL RESEARCH 2009. [DOI: 10.3184/030823409x12572506562749] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Electrochemically-generated basic species from the reduction of acetonitrile assisted the condensation of carbon disulfide, primary arylmethylamines and chloroacetone to yield the corresponding N-substituted-4-hydroxy-4-methylthiazolidine-2-thione derivatives. In some cases, dehydration reaction led to the N-substituted-4-methylthiazole-2(3 H)-thione analogues. The effect of the electrogenerated base amount on the reaction yield was also studied.
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Affiliation(s)
- Khalil Tissaoui
- Laboratoire de Chimie Analytique et Electrochimie, Faculté des Sciences de Tunis, Université Tunis El-Manar, Campus Universitaire 2092 Tunis, Tunisia
| | - Noureddine Raouafi
- Laboratoire de Chimie Analytique et Electrochimie, Faculté des Sciences de Tunis, Université Tunis El-Manar, Campus Universitaire 2092 Tunis, Tunisia
| | - Khaled Boujlel
- Laboratoire de Chimie Analytique et Electrochimie, Faculté des Sciences de Tunis, Université Tunis El-Manar, Campus Universitaire 2092 Tunis, Tunisia
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