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Hellwig PS, Bartz RH, Santos RRSA, Guedes JS, Silva MS, Lenardão EJ, Perin G. Telescoping Synthesis of 4-Organyl-5-(organylselanyl)thiazol-2-amines Promoted by Ultrasound. Chempluschem 2024; 89:e202300690. [PMID: 38426670 DOI: 10.1002/cplu.202300690] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2023] [Revised: 02/07/2024] [Indexed: 03/02/2024]
Abstract
In this work, we describe the synthesis of new 4-organyl-5-(organylselanyl)thiazol-2-amine hybrids through a one-pot two-step protocol. The transition metal-free method involves the use of ultrasound as an alternative energy source and Oxone® as oxidant. To obtain the products, a telescoping approach was used, in which 4-organylthiazol-2-amines were firstly prepared under ultrasonic irradiation, followed by the addition of diorganyl diselenides and Oxone®. Thus, 16 compounds were prepared, with yields ranging from 61 % to 98 %, using 2-bromoacetophenone derivatives and diorganyl diselenides as easily available starting materials.
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Affiliation(s)
- Paola S Hellwig
- Centro de Ciências Químicas, Farmacêuticas e de Alimentos - CCQFA, Universidade Federal de Pelotas - UFPel, P. O. box 354, CEP: 96010-900, Pelotas, RS, Brazil
| | - Ricardo H Bartz
- Centro de Ciências Químicas, Farmacêuticas e de Alimentos - CCQFA, Universidade Federal de Pelotas - UFPel, P. O. box 354, CEP: 96010-900, Pelotas, RS, Brazil
| | - Rafaela R S A Santos
- Centro de Ciências Químicas, Farmacêuticas e de Alimentos - CCQFA, Universidade Federal de Pelotas - UFPel, P. O. box 354, CEP: 96010-900, Pelotas, RS, Brazil
| | - Jonatan S Guedes
- Centro de Ciências Químicas, Farmacêuticas e de Alimentos - CCQFA, Universidade Federal de Pelotas - UFPel, P. O. box 354, CEP: 96010-900, Pelotas, RS, Brazil
| | - Márcio S Silva
- Centro de Ciências Químicas, Farmacêuticas e de Alimentos - CCQFA, Universidade Federal de Pelotas - UFPel, P. O. box 354, CEP: 96010-900, Pelotas, RS, Brazil
| | - Eder J Lenardão
- Centro de Ciências Químicas, Farmacêuticas e de Alimentos - CCQFA, Universidade Federal de Pelotas - UFPel, P. O. box 354, CEP: 96010-900, Pelotas, RS, Brazil
| | - Gelson Perin
- Centro de Ciências Químicas, Farmacêuticas e de Alimentos - CCQFA, Universidade Federal de Pelotas - UFPel, P. O. box 354, CEP: 96010-900, Pelotas, RS, Brazil
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2
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Azevedo AR, Cordeiro P, Strelow DN, de Andrade KN, Neto MRS, Goetze Fiorot R, Brüning CA, Braga AL, Lião LM, Bortolatto CF, Neto JSS, Nascimento V. Green Approach for the Synthesis of Chalcogenyl- 2,3-dihydrobenzofuran Derivatives Through Allyl-phenols/ Naphthols and Their Potential as MAO-B Inhibitors. Chem Asian J 2023:e202300586. [PMID: 37733585 DOI: 10.1002/asia.202300586] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2023] [Revised: 08/30/2023] [Accepted: 09/20/2023] [Indexed: 09/23/2023]
Abstract
This work presents the design, synthesis, and MAO-B inhibitor activity of a series of chalcogenyl-2,3-dihydrobenzofurans derivatives. Using solvent- and metal-free methodology, a series of chalcogen-containing dihydrobenzofurans 7-9 was obtained with yields ranging from 40% to 99%, using an I2 /DMSO catalytic system. All compounds were fully structurally characterized using 1 H and 13 C NMR analysis, and the unprecedented compounds were additionally analyzed using high-resolution mass spectrometry (HRMS). In addition, the mechanistic proposal that iodide is the most likely species to act in the transfer of protons along the reaction path was studied through theoretical calculations. Finally, the compounds 7b-e, 8a-e, and 9a showed great promise as inhibitors against MAO-B activity.
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Affiliation(s)
- Amanda R Azevedo
- SupraSelen Laboratory, Department of Organic Chemistry, Universidade Federal Fluminense, Niterói, Institute of Chemistry, Campus do Valonguinho, 24020-141, RJ, Brazil
| | - Pâmella Cordeiro
- SupraSelen Laboratory, Department of Organic Chemistry, Universidade Federal Fluminense, Niterói, Institute of Chemistry, Campus do Valonguinho, 24020-141, RJ, Brazil
| | - Dianer N Strelow
- Molecular Biochemistry and Neuropharmacology Laboratory (LABIONEM), Chemical, Pharmaceutical and Food Sciences Center (CCQFA), Federal University of Pelotas Pelotas, 96010-900, RS, Brazil
| | - Karine N de Andrade
- Department of Organic Chemistry, Institute of Chemistry, Universidade Federal Fluminense Niterói, Outeiro São João Batista, s/n, 24020-141, RJ, Brazil
| | - Marcos R S Neto
- LabSelen, Department of Chemistry, Federal University of Santa Catarina, Santa Catarina, 88040-900, SC, Brazil
| | - Rodolfo Goetze Fiorot
- Department of Organic Chemistry, Institute of Chemistry, Universidade Federal Fluminense Niterói, Outeiro São João Batista, s/n, 24020-141, RJ, Brazil
| | - César A Brüning
- Molecular Biochemistry and Neuropharmacology Laboratory (LABIONEM), Chemical, Pharmaceutical and Food Sciences Center (CCQFA), Federal University of Pelotas Pelotas, 96010-900, RS, Brazil
| | - Antonio L Braga
- LabSelen, Department of Chemistry, Federal University of Santa Catarina, Santa Catarina, 88040-900, SC, Brazil
| | - Luciano M Lião
- LabRMN, Chemistry Institute, Federal University of Goiás Goiânia, 74690-900, GO, Brazil
| | - Cristiani F Bortolatto
- Molecular Biochemistry and Neuropharmacology Laboratory (LABIONEM), Chemical, Pharmaceutical and Food Sciences Center (CCQFA), Federal University of Pelotas Pelotas, 96010-900, RS, Brazil
| | - José S S Neto
- LabRMN, Chemistry Institute, Federal University of Goiás Goiânia, 74690-900, GO, Brazil
| | - Vanessa Nascimento
- SupraSelen Laboratory, Department of Organic Chemistry, Universidade Federal Fluminense, Niterói, Institute of Chemistry, Campus do Valonguinho, 24020-141, RJ, Brazil
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3
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Efficient Synthesis of 1 H-Benzo[4,5]imidazo[1,2- c][1,3]oxazin-1-one Derivatives Using Ag 2CO 3/TFA-Catalyzed 6- endo-dig Cyclization: Reaction Scope and Mechanistic Study. Molecules 2023; 28:molecules28052403. [PMID: 36903655 PMCID: PMC10005794 DOI: 10.3390/molecules28052403] [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: 02/09/2023] [Revised: 02/27/2023] [Accepted: 02/28/2023] [Indexed: 03/09/2023] Open
Abstract
A small library of 1H-benzo[4,5]imidazo[1,2-c][1,3]oxazin-1-one derivatives was prepared in good to excellent yields, involving a Ag2CO3/TFA-catalyzed intramolecular oxacyclization of N-Boc-2-alkynylbenzimidazole substrates. In all experiments, the 6-endo-dig cyclization was exclusively achieved since the possible 5-exo-dig heterocycle was not observed, indicating the high regioselectivity of this process. The scope and limitations of the silver catalyzed 6-endo-dig cyclization of N-Boc-2-alkynylbenzimidazoles as substrates, bearing various substituents, were investigated. While ZnCl2 has shown limits for alkynes with an aromatic substituent, Ag2CO3/TFA demonstrated its effectiveness and compatibility regardless of the nature of the starting alkyne (aliphatic, aromatic or heteroaromatic), providing a practical regioselective access to structurally diverse 1H-benzo[4,5]imidazo[1,2-c][1,3]oxazin-1-ones in good yields. Moreover, the rationalization of oxacyclization selectivity in favor of 6-endo-dig over 5-exo-dig was explained by a complementary computational study.
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Chutia K, Sarmah M, Gogoi P. Substituted Isocoumarins: An Assemble of Synthetic Strategies Towards 3-Substituted and 3,4-Disubstituted Isocoumarins. Chem Asian J 2023; 18:e202201240. [PMID: 36647281 DOI: 10.1002/asia.202201240] [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: 12/12/2022] [Revised: 01/13/2023] [Accepted: 01/16/2023] [Indexed: 01/18/2023]
Abstract
The versatility of isocoumarin frameworks offers the privilege to access many pharmacological targets. This unique heterocycle core present in many natural products and complex organic molecules contribute to medicinal chemistry as anti-cancer, anti-inflammatory and immunomodulatory agents. The attractive properties exhibited by its analogues urged the scientists to explore their synthetic analogues. In regard to the myriads of synthetic methodologies, we have compiled a review update covering all the articles that have been published towards the synthesis of 3-substituted and 3,4-disubstituted isocoumarins. Additionally, we have also highlighted a systematic survey of catalytic methods for their synthesis along with their scope towards diverse functionalizations and plausible mechanistic aspects.
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Affiliation(s)
- Kangkana Chutia
- Applied Organic Chemistry Group, Chemical Science and Technology Division CSIR-North East Institute of Science and Technology, NH 37, Pulibor, Jorhat, Assam, 785006, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, U.P., 201002, India
| | - Manashi Sarmah
- Applied Organic Chemistry Group, Chemical Science and Technology Division CSIR-North East Institute of Science and Technology, NH 37, Pulibor, Jorhat, Assam, 785006, India
| | - Pranjal Gogoi
- Applied Organic Chemistry Group, Chemical Science and Technology Division CSIR-North East Institute of Science and Technology, NH 37, Pulibor, Jorhat, Assam, 785006, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, U.P., 201002, India
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Hellwig PS, Barcellos AM, Cargnelutti R, Barcellos T, Perin G. Synthesis of Chalcogenylchromenes through Cyclization of Propargylic Aryl Ethers. J Org Chem 2022; 87:15050-15060. [PMID: 36302502 DOI: 10.1021/acs.joc.2c01490] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
We describe here for the first time the synthesis of 2-(chalcogenyl)-3H-benzo[f]chromenes and the new 3-(phenylselanyl)-2H-chromenes by the radical or electrophilic cyclization of propargylic aryl ethers in the presence of diorganyl diselenides or ditellurides using Oxone as a green oxidant and acetonitrile as solvent in a sealed tube at 100 °C. In this study, thirty-one chalcogenylchromenes with a broad substrate scope were prepared in moderate to excellent yields (50-98%), including compounds derived from natural products.
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Affiliation(s)
- Paola S Hellwig
- Laboratório de Síntese Orgânica Limpa - LASOL, CCQFA, Universidade Federal de Pelotas - UFPel, P.O. Box 354 - 96010-900, Pelotas, RS, Brazil
| | - Angelita M Barcellos
- Laboratório de Síntese Orgânica Limpa - LASOL, CCQFA, Universidade Federal de Pelotas - UFPel, P.O. Box 354 - 96010-900, Pelotas, RS, Brazil
| | - Roberta Cargnelutti
- Departamento de Química, CCNE, Universidade Federal de Santa Maria - UFSM, 97105-900, Santa Maria, RS, Brazil
| | - Thiago Barcellos
- Laboratório de Biotecnologia de Produtos Naturais e Sintéticos, Universidade de Caxias do Sul, 95070-560, Caxias do Sul, RS, Brazil
| | - Gelson Perin
- Laboratório de Síntese Orgânica Limpa - LASOL, CCQFA, Universidade Federal de Pelotas - UFPel, P.O. Box 354 - 96010-900, Pelotas, RS, Brazil
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Tan X, Zhao K, Zhong X, Yang L, Dong Y, Wang T, Yu S, Li X, Zhao Z. Synthesis of 1,2-diselenides via potassium persulfate-mediated diselenation of allenamides with diselenides. Org Biomol Chem 2022; 20:6566-6570. [PMID: 35903979 DOI: 10.1039/d2ob00964a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An efficient potassium persulfate-mediated radical addition of allenamides with diselenides was developed to create a workable route to 1,2-diselenide products. The reaction tolerates a wide spectrum of functional groups to deliver the products in good to excellent yields. Mechanistic investigations including a calculation study indicated that the radical cascade proceeds through a vinyl radical intermediate, which is formed via a selenium radical added to the terminal CC double bond of allenamides.
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Affiliation(s)
- Xiaoju Tan
- Key Laboratory of Basic Chemistry of the State Ethnic Commission, School of Chemistry and Environment, Southwest Minzu University, Chengdu 610041, PR China.
| | - Kun Zhao
- Key Laboratory of Basic Chemistry of the State Ethnic Commission, School of Chemistry and Environment, Southwest Minzu University, Chengdu 610041, PR China.
| | - Xuefang Zhong
- Key Laboratory of Basic Chemistry of the State Ethnic Commission, School of Chemistry and Environment, Southwest Minzu University, Chengdu 610041, PR China.
| | - Lan Yang
- Key Laboratory of Basic Chemistry of the State Ethnic Commission, School of Chemistry and Environment, Southwest Minzu University, Chengdu 610041, PR China.
| | - Yiming Dong
- Key Laboratory of Basic Chemistry of the State Ethnic Commission, School of Chemistry and Environment, Southwest Minzu University, Chengdu 610041, PR China.
| | - Tianmi Wang
- Key Laboratory of Basic Chemistry of the State Ethnic Commission, School of Chemistry and Environment, Southwest Minzu University, Chengdu 610041, PR China.
| | - Shengping Yu
- Key Laboratory of Basic Chemistry of the State Ethnic Commission, School of Chemistry and Environment, Southwest Minzu University, Chengdu 610041, PR China.
| | - Xiaoxiao Li
- Key Laboratory of Basic Chemistry of the State Ethnic Commission, School of Chemistry and Environment, Southwest Minzu University, Chengdu 610041, PR China.
| | - Zhigang Zhao
- Key Laboratory of Basic Chemistry of the State Ethnic Commission, School of Chemistry and Environment, Southwest Minzu University, Chengdu 610041, PR China.
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7
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Alvi S, Jayant V, Ali R. Applications of Oxone® in Organic Synthesis: An Emerging Green Reagent of Modern Era. ChemistrySelect 2022. [DOI: 10.1002/slct.202200704] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Shakeel Alvi
- Department of Chemistry, Jamia Millia Islamia, Jamia Nagar, Okhla New Delhi 110025 India
| | - Vikrant Jayant
- Department of Chemistry, Jamia Millia Islamia, Jamia Nagar, Okhla New Delhi 110025 India
| | - Rashid Ali
- Department of Chemistry, Jamia Millia Islamia, Jamia Nagar, Okhla New Delhi 110025 India
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Goulart HA, Bartz RH, Peglow TJ, Barcellos AM, Cervo R, Cargnelutti R, Jacob RG, Lenardão EJ, Perin G. Synthesis of Seleno-Dibenzocycloheptenones/Spiro[5.5]Trienones by Radical Cyclization of Biaryl Ynones. J Org Chem 2022; 87:4273-4283. [PMID: 35245049 DOI: 10.1021/acs.joc.1c03112] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
We report herein an alternative method for the synthesis of seleno-dibenzocycloheptenones and seleno-spiro[5.5]trienones through the radical cyclization of biaryl ynones in the presence of diorganyl diselenides, using Oxone as a green oxidizing agent. The reactions were conducted using acetonitrile as the solvent in a sealed tube at 100 °C. The protocol is operationally simple and scalable, exhibits high regioselectivity, and allows the synthesis of 24 dibenzocycloheptenones/spiro[5.5]trienones in yields of up to 99%, 17 of which are unpublished compounds. Additionally, synthetic transformations of the prepared compounds, such as oxidation and reduction reactions, are demonstrated.
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Affiliation(s)
- Helen A Goulart
- Laboratório de Síntese Orgânica Limpa - LASOL, CCQFA, Universidade Federal de Pelotas - UFPel, P.O. Box 354-96010-900, Pelotas, RS, Brazil
| | - Ricardo H Bartz
- Laboratório de Síntese Orgânica Limpa - LASOL, CCQFA, Universidade Federal de Pelotas - UFPel, P.O. Box 354-96010-900, Pelotas, RS, Brazil
| | - Thiago J Peglow
- Laboratório de Síntese Orgânica Limpa - LASOL, CCQFA, Universidade Federal de Pelotas - UFPel, P.O. Box 354-96010-900, Pelotas, RS, Brazil
| | - Angelita M Barcellos
- Laboratório de Síntese Orgânica Limpa - LASOL, CCQFA, Universidade Federal de Pelotas - UFPel, P.O. Box 354-96010-900, Pelotas, RS, Brazil
| | - Rodrigo Cervo
- Departamento de Química, CCNE, Universidade Federal de Santa Maria - UFSM, 97105-900, Santa Maria, RS, Brazil
| | - Roberta Cargnelutti
- Departamento de Química, CCNE, Universidade Federal de Santa Maria - UFSM, 97105-900, Santa Maria, RS, Brazil
| | - Raquel G Jacob
- Laboratório de Síntese Orgânica Limpa - LASOL, CCQFA, Universidade Federal de Pelotas - UFPel, P.O. Box 354-96010-900, Pelotas, RS, Brazil
| | - Eder J Lenardão
- Laboratório de Síntese Orgânica Limpa - LASOL, CCQFA, Universidade Federal de Pelotas - UFPel, P.O. Box 354-96010-900, Pelotas, RS, Brazil
| | - Gelson Perin
- Laboratório de Síntese Orgânica Limpa - LASOL, CCQFA, Universidade Federal de Pelotas - UFPel, P.O. Box 354-96010-900, Pelotas, RS, Brazil
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9
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Kim KS, Maeng N, Kim DY. Synthesis of selenated γ-lactones via Oxone-promoted selenylation and cyclization of alkenoic acids with diselenides. RESULTS IN CHEMISTRY 2022. [DOI: 10.1016/j.rechem.2022.100349] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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10
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Bartz RH, Silva KB, Peglow TJ, Barcellos AM, Jacob RG, Lenardão EJ, Perin G. Radical cyclization of alkynyl aryl ketones for the synthesis of 3-seleno-substituted thiochromones and chromones. Org Biomol Chem 2022; 20:8952-8961. [DOI: 10.1039/d2ob01762h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Herein we present an alternative and transition-metal-free procedure to access 3-organoselanylthiochromones and 3-organoselanylchromones from the cyclization reaction between alkynyl aryl ketones and diorganyl diselenides promoted by Oxone®.
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Affiliation(s)
- Ricardo H. Bartz
- LASOL-CCQFA, Universidade Federal de Pelotas – UFPel, P.O. Box 354, 96010-900, Pelotas, RS, Brazil
| | - Krigor B. Silva
- LASOL-CCQFA, Universidade Federal de Pelotas – UFPel, P.O. Box 354, 96010-900, Pelotas, RS, Brazil
| | - Thiago J. Peglow
- LASOL-CCQFA, Universidade Federal de Pelotas – UFPel, P.O. Box 354, 96010-900, Pelotas, RS, Brazil
| | - Angelita M. Barcellos
- LASOL-CCQFA, Universidade Federal de Pelotas – UFPel, P.O. Box 354, 96010-900, Pelotas, RS, Brazil
| | - Raquel G. Jacob
- LASOL-CCQFA, Universidade Federal de Pelotas – UFPel, P.O. Box 354, 96010-900, Pelotas, RS, Brazil
| | - Eder J. Lenardão
- LASOL-CCQFA, Universidade Federal de Pelotas – UFPel, P.O. Box 354, 96010-900, Pelotas, RS, Brazil
| | - Gelson Perin
- LASOL-CCQFA, Universidade Federal de Pelotas – UFPel, P.O. Box 354, 96010-900, Pelotas, RS, Brazil
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Hellwig PS, Barcellos AM, Furst CG, Alberto EE, Perin G. Oxyselenocyclization of 2‐Allylphenols for the Synthesis of 2,3‐Dihydrobenzofuran Selenides. ChemistrySelect 2021. [DOI: 10.1002/slct.202104072] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Paola S. Hellwig
- Laboratório de Síntese Orgânica Limpa – LASOL CCQFA Universidade Federal de Pelotas – UFPel P.O. Box 354 96010-900 Pelotas RS Brazil
| | - Angelita M. Barcellos
- Laboratório de Síntese Orgânica Limpa – LASOL CCQFA Universidade Federal de Pelotas – UFPel P.O. Box 354 96010-900 Pelotas RS Brazil
| | - Carolina G. Furst
- Department of Chemistry Universidade Federal de Minas Gerais - UFMG Belo Horizonte MG Brazil
| | - Eduardo E. Alberto
- Department of Chemistry Universidade Federal de Minas Gerais - UFMG Belo Horizonte MG Brazil
| | - Gelson Perin
- Laboratório de Síntese Orgânica Limpa – LASOL CCQFA Universidade Federal de Pelotas – UFPel P.O. Box 354 96010-900 Pelotas RS Brazil
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12
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Goulart HA, Araujo DR, Penteado F, Jacob RG, Perin G, Lenardão EJ. Recent Advances in the Oxone-Mediated Synthesis of Heterocyclic Compounds. Molecules 2021; 26:7523. [PMID: 34946605 PMCID: PMC8705989 DOI: 10.3390/molecules26247523] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2021] [Revised: 12/07/2021] [Accepted: 12/10/2021] [Indexed: 12/12/2022] Open
Abstract
Oxone is a commercially available oxidant, composed of a mixture of three inorganic species, being the potassium peroxymonosulfate (KHSO5) the reactive one. Over the past few decades, this cheap and environmentally friendly oxidant has become a powerful tool in organic synthesis, being extensively employed to mediate the construction of a plethora of important compounds. This review summarizes the recent advances in the Oxone-mediated synthesis of N-, O- and chalcogen-containing heterocyclic compounds, through a wide diversity of reactions, starting from several kinds of substrate, highlighting the main synthetic differences, advantages, the scope and limitations.
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Affiliation(s)
| | | | | | | | - Gelson Perin
- Laboratório de Síntese Orgânica Limpa-LASOL-CCQFA, Universidade Federal de Pelotas-UFPel, P.O. Box 354, Pelotas 96010-900, RS, Brazil; (H.A.G.); (D.R.A.); (F.P.); (R.G.J.)
| | - Eder J. Lenardão
- Laboratório de Síntese Orgânica Limpa-LASOL-CCQFA, Universidade Federal de Pelotas-UFPel, P.O. Box 354, Pelotas 96010-900, RS, Brazil; (H.A.G.); (D.R.A.); (F.P.); (R.G.J.)
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13
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Lo Fiego MJ, Lorenzetti AS, Silbestri GF, Domini CE. The use of ultrasound in the South Cone region. Advances in organic and inorganic synthesis and in analytical methods. ULTRASONICS SONOCHEMISTRY 2021; 80:105834. [PMID: 34814046 PMCID: PMC8608658 DOI: 10.1016/j.ultsonch.2021.105834] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/10/2021] [Revised: 10/30/2021] [Accepted: 11/13/2021] [Indexed: 05/25/2023]
Abstract
In organic and inorganic synthesis and in analytical methods, an external conventional heat source is usually applied to carry out a chemical reaction at a high temperature, or an extraction procedure. In the last decades, the use of ultrasound as an alternative energy source has become an interesting field of research in these topics in the South Cone region (Argentina, Chile, Uruguay, Southern Brazil and Paraguay). For this reason, the present review, covering the period 2009 to mid-2021, is a compilation of ultrasound-assisted synthetic and analytical methodologies.
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Affiliation(s)
- Marcos J Lo Fiego
- INQUISUR, Departamento de Química, Universidad Nacional Del Sur (UNS)-CONICET, Av. Alem 1253, Bahía Blanca 8000, Argentina
| | - Anabela S Lorenzetti
- INQUISUR, Departamento de Química, Universidad Nacional Del Sur (UNS)-CONICET, Av. Alem 1253, Bahía Blanca 8000, Argentina
| | - Gustavo F Silbestri
- INQUISUR, Departamento de Química, Universidad Nacional Del Sur (UNS)-CONICET, Av. Alem 1253, Bahía Blanca 8000, Argentina.
| | - Claudia E Domini
- INQUISUR, Departamento de Química, Universidad Nacional Del Sur (UNS)-CONICET, Av. Alem 1253, Bahía Blanca 8000, Argentina.
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14
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Gao C, Blum SA. Main-group metalated heterocycles through Lewis acid cyclization. TRENDS IN CHEMISTRY 2021. [DOI: 10.1016/j.trechm.2021.05.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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