1
|
Rodrigues Jr. MT, de Oliveira ASB, Gomes RC, Hirata AS, Zeoly LA, Santos H, Arantes J, Reis-Silva CSM, Machado-Neto JA, Costa-Lotufo LV, Coelho F. Bismuth(III) triflate: an economical and environmentally friendly catalyst for the Nazarov reaction. Beilstein J Org Chem 2024; 20:1167-1178. [PMID: 38887581 PMCID: PMC11181232 DOI: 10.3762/bjoc.20.99] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2024] [Accepted: 05/02/2024] [Indexed: 06/20/2024] Open
Abstract
We describe the use of bismuth(III) triflate as an efficient and environmentally friendly catalyst for the Nazarov reaction of aryl vinyl ketones, leading to the synthesis of 3-aryl-2-ethoxycarbonyl-1-indanones and 3-aryl-1-indanones. By changing the temperature and reaction time, it was possible to modulate the reactivity, allowing the synthesis of two distinct product classes (3-aryl-2-ethoxycarbonyl-1-indanones and 3-aryl-1-indanones) in good to excellent yield. The reaction did not require additives and was insensitive to both air and moisture. Preliminary biological evaluation of some indanones showed a promising profile against some human cancer line cells.
Collapse
Affiliation(s)
| | | | - Ralph C Gomes
- Institute of Chemistry, Universidade Estadual de Campinas, PO Box 6154, 13083-970 Campinas, São Paulo, Brazil
| | - Amanda Soares Hirata
- Department of Pharmacology, Institute of Biomedical Sciences, University of São Paulo, 05508-000 São Paulo, Brazil
| | - Lucas A Zeoly
- Institute of Chemistry, Universidade Estadual de Campinas, PO Box 6154, 13083-970 Campinas, São Paulo, Brazil
| | - Hugo Santos
- Institute of Chemistry, Universidade Estadual de Campinas, PO Box 6154, 13083-970 Campinas, São Paulo, Brazil
| | - João Arantes
- Institute of Chemistry, Universidade Estadual de Campinas, PO Box 6154, 13083-970 Campinas, São Paulo, Brazil
| | | | - João Agostinho Machado-Neto
- Department of Pharmacology, Institute of Biomedical Sciences, University of São Paulo, 05508-000 São Paulo, Brazil
| | - Leticia Veras Costa-Lotufo
- Department of Pharmacology, Institute of Biomedical Sciences, University of São Paulo, 05508-000 São Paulo, Brazil
| | - Fernando Coelho
- Institute of Chemistry, Universidade Estadual de Campinas, PO Box 6154, 13083-970 Campinas, São Paulo, Brazil
| |
Collapse
|
2
|
Chand S, Sharma AK, Pandey AK, Singh KN. Synthesis of unsymmetrical ketones via dual catalysed cross-coupling of α,β-unsaturated carboxylic acids with aryldiazonium salts. Chem Commun (Camb) 2023. [PMID: 38013486 DOI: 10.1039/d3cc04898e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2023]
Abstract
A visible light-enabled synthesis of unsymmetrical ketones has been accomplished by the cross-coupling of α,β-unsaturated carboxylic acids and aryldiazonium salts embracing a synergistic eosin Y and Co(OAc)2·4H2O catalysis. The reaction involves decarboxylative aerobic CC bond cleavage, and is endowed with the creation of new C-C and C-O bonds with good substrate scope.
Collapse
Affiliation(s)
- Shiv Chand
- Department of Chemistry Institute of Science Banaras Hindu University, Varanasi 221005, India.
| | - Anup Kumar Sharma
- Department of Chemistry Institute of Science Banaras Hindu University, Varanasi 221005, India.
| | - Anand Kumar Pandey
- Department of Chemistry Institute of Science Banaras Hindu University, Varanasi 221005, India.
| | - Krishna Nand Singh
- Department of Chemistry Institute of Science Banaras Hindu University, Varanasi 221005, India.
| |
Collapse
|
3
|
Di Terlizzi L, Galathri EM, Protti S, Kokotos CG, Fagnoni M. A General Metal-Free Protocol for the Visible-Light-Driven Protection of Carbonyls. CHEMSUSCHEM 2023; 16:e202201998. [PMID: 36427248 DOI: 10.1002/cssc.202201998] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/28/2022] [Revised: 11/25/2022] [Indexed: 06/16/2023]
Abstract
The protection of a carbonyl is a standard procedure to mask the reactivity of this group towards nucleophiles and reductants. The present work pointed out the potentialities of arylazo sulfones as non-ionic photoacid generators (PAGs) to promote the efficient conversion of aldehydes and ketones into acetals, ketals, and 1,3-oxazolidines upon visible-light irradiation. This approach employed mild conditions and exhibited an easy scalability and a broad scope (80 examples included).
Collapse
Affiliation(s)
- Lorenzo Di Terlizzi
- PhotoGreen Lab, Department of Chemistry, University of Pavia, Viale Taramelli 12, 27100, Pavia, Italy
| | - Eirini M Galathri
- Laboratory of Organic Chemistry, Department of Chemistry, National and Kapodistrian University of Athens, Panepistimiopolis, 15771, Athens, Greece
| | - Stefano Protti
- PhotoGreen Lab, Department of Chemistry, University of Pavia, Viale Taramelli 12, 27100, Pavia, Italy
| | - Christoforos G Kokotos
- Laboratory of Organic Chemistry, Department of Chemistry, National and Kapodistrian University of Athens, Panepistimiopolis, 15771, Athens, Greece
| | - Maurizio Fagnoni
- PhotoGreen Lab, Department of Chemistry, University of Pavia, Viale Taramelli 12, 27100, Pavia, Italy
| |
Collapse
|
4
|
Lopez E, Thorp SC, Mohan RS. Bismuth(III) compounds as catalysts in organic synthesis: A mini review. Polyhedron 2022. [DOI: 10.1016/j.poly.2022.115765] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
5
|
Nanoarchitectonics of heterometallic compound Al4Bi4 for optical limiting. INORG CHEM COMMUN 2022. [DOI: 10.1016/j.inoche.2021.109117] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
|
6
|
Wang D, Cao FR, Lu G, Ren J, Zeng BB. Practical acetalization and transacetalization of carbonyl compounds catalyzed by recyclable PVP-I. Tetrahedron 2021. [DOI: 10.1016/j.tet.2021.132250] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
7
|
Single-Crystal-to-Single-Crystal Transformation and Catalytic Properties of New Hybrid Perhalidometallates. Catalysts 2021. [DOI: 10.3390/catal11070758] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023] Open
Abstract
Two new organic–inorganic salts of perhalidometallates with protonated organic amine cations have been synthesized and characterized by X-ray diffraction and thermal analysis. (CHBMAH2)ZnBr4·3/2H2O 1 and (CHBMAH2)ZnCl4 4 [(CHBMAH2)2+: 1,3-cyclohexanebis(methylammonium)] were obtained in single-crystal form. The crystal packing in all of the obtained compounds is governed by the formation of various non-covalent intermolecular forces between tetrahalidometallate anions and organic cations, assisted by water molecules in the hydrates. Hirshfeld surface analysis denotes that the most important contributions to the crystal packing are X···H/H···X (X: Cl, Br, I) and H···H interactions. Interestingly, the compound 1,3-cyclohexanebis(methylammonium)tetrachloridozincate (II) dihydrate, (CHBMAH2)ZnCl4·2H2O 2, undergoes thermally-triggered single-crystal-to-single-crystal (SCSC) transformation upon dehydration to produce a supramolecular solid compound, 1,3-cyclohexanebis(methylammonium) tetrachloridozincate (II), (CHBMAH2)ZnCl4 4. The SCSC transformation causes changes in the lattice parameters and a structural rearrangement. Furthermore, the catalytic properties of (CHBMAH2)ZnCl4·2H2O 2 and (CHBMAH2)CdI4·2H2O 3 have been explored in the acetalization process using various uncommon alcohols, beyond methanol or ethanol, for the first time in the literature, with outstanding results, and opening the door to the formation of alternative acetals.
Collapse
|
8
|
A novel Bi-based crystalline molecular material: fluorescence response of the high efficient detection and recognition of the organic amines and white luminescence tuning. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2020.129723] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
|
9
|
Banik BK, Boretti A. Hypotheses for synthesis of novel chiral beta-amino-beta-lactams through amidines. RESULTS IN CHEMISTRY 2021. [DOI: 10.1016/j.rechem.2021.100158] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
|
10
|
Gannimani R, Walvekar P, Naidu VR, Aminabhavi TM, Govender T. Acetal containing polymers as pH-responsive nano-drug delivery systems. J Control Release 2020; 328:736-761. [DOI: 10.1016/j.jconrel.2020.09.044] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2020] [Revised: 09/22/2020] [Accepted: 09/23/2020] [Indexed: 01/04/2023]
|
11
|
Khademi Z, Nikoofar K. Applications of alkyl orthoesters as valuable substrates in organic transformations, focusing on reaction media. RSC Adv 2020; 10:30314-30397. [PMID: 35559005 PMCID: PMC9092620 DOI: 10.1039/d0ra05276k] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2020] [Accepted: 07/27/2020] [Indexed: 02/01/2023] Open
Abstract
In this review we focus on applications of alkyl orthoesters as valuable and efficient substrates to perform various classes of two-component and multi-component organic reactions. The article has classified them according to two aspects, which are: (i) a focus on the reaction medium (solvent-free conditions, aqueous media, and organic solvents); and (ii) an examination of product structures. Reaction accomplishment under solvent-free conditions is an eco-friendly process with the absence of volatile toxic solvents, which puts it in line with green chemistry goals. Water is an interesting choice in organic transformations due to its inexpensiveness and safety. The authors hope their assessment will help chemists to attain new approaches for utilizing alkyl orthoesters in various organic synthetic methods. The review covers the corresponding literature up to the beginning of 2020. In this review we focus on applications of alkyl orthoesters as valuable and efficient substrates to perform various classes of two-component and multi-component organic reactions.![]()
Collapse
Affiliation(s)
- Zahra Khademi
- Department of Chemistry, Faculty of Physics & Chemistry, Alzahra University P.O. Box 1993891176 Tehran Iran +982188041344 +982188041344
| | - Kobra Nikoofar
- Department of Chemistry, Faculty of Physics & Chemistry, Alzahra University P.O. Box 1993891176 Tehran Iran +982188041344 +982188041344
| |
Collapse
|
12
|
Bonilla-Landa I, López-Hernández E, Barrera-Méndez F, Salas NC, Olivares-Romero JL. Hafnium(IV) Chloride Catalyzes Highly Efficient Acetalization of Carbonyl Compounds. Curr Org Synth 2020; 16:913-920. [PMID: 31984912 DOI: 10.2174/1570179416666190715100505] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2018] [Revised: 03/14/2019] [Accepted: 04/12/2019] [Indexed: 11/22/2022]
Abstract
BACKGROUND Hafnium(IV) tetrachloride efficiently catalyzes the protection of a variety of aldehydes and ketones, including benzophenone, acetophenone, and cyclohexanone, to the corresponding dimethyl acetals and 1,3-dioxolanes, under microwave heating. Substrates possessing acid-labile protecting groups (TBDPS and Boc) chemoselectively generated the corresponding acetal/ketal in excellent yields. AIMS AND OBJECTIVES In this study. the selective protection of aldehydes and ketones using a Hafnium(IV) chloride, which is a novel catalyst, under microwave heating was observed. Hence, it is imperative to find suitable conditions to promote the protection reaction in high yields and short reaction times. This study was undertaken not only to find a novel catalyst but also to perform the reaction with substrates bearing acid-labile protecting groups, and study the more challenging ketones as benzophenone. MATERIALS AND METHODS Using a microwave synthesis reactor Monowave 400 of Anton Paar, the protection reaction was performed on a raging temperature of 100°C ±1, a pressure of 2.9 bar, and an electric power of 50 W. More than 40 substrates have been screened and protected, not only the aldehydes were protected in high yields but also the more challenging ketones such as benzophenone were protected. All the products were purified by simple flash column chromatography, using silica gel and hexanes/ethyl acetate (90:10) as eluents. Finally, the protected substrates were characterized by NMR 1H, 13C and APCI-HRMS-QTOF. RESULTS Preliminary screening allowed us to find that 5 mol % of the catalyst is enough to furnish the protected aldehyde or ketone in up to 99% yield. Also it was found that substrates with a variety of substitutions on the aromatic ring (aldehyde or ketone), that include electron-withdrawing and electrondonating group, can be protected using this methodology in high yields. The more challenging cyclic ketones were also protected in up to 86% yield. It was found that trimethyl orthoformate is a very good additive to obtain the protected acetophenone. Finally, the protection of aldehydes with sensitive functional groups was performed. Indeed, it was found that substrates bearing acid labile groups such as Boc and TBDPS, chemoselectively generated the corresponding acetal/ketal compound while keeping the protective groups intact in up to 73% yield. CONCLUSION Hafnium(IV) chloride as a catalyst provides a simple, highly efficient, and general chemoselective methodology for the protection of a variety of structurally diverse aldehydes and ketones. The major advantages offered by this method are: high yields, low catalyst loading, air-stability, and non-toxicity.
Collapse
Affiliation(s)
- Israel Bonilla-Landa
- Instituto de Ecologia A.C., Red de Estudios Moleculares Avanzados, Clúster Científico y Tecnologico BioMimic®, Campus III, Carretera Antigua a Coatepec N. 351, 91070, Xalapa, Veracruz, Mexico
| | - Emizael López-Hernández
- Instituto de Ecologia A.C., Red de Estudios Moleculares Avanzados, Clúster Científico y Tecnologico BioMimic®, Campus III, Carretera Antigua a Coatepec N. 351, 91070, Xalapa, Veracruz, Mexico
| | - Felipe Barrera-Méndez
- Instituto de Ecologia A.C., Red de Estudios Moleculares Avanzados, Clúster Científico y Tecnologico BioMimic®, Campus III, Carretera Antigua a Coatepec N. 351, 91070, Xalapa, Veracruz, Mexico
| | - Nadia C Salas
- Centro de Investigacion Cientifica y de Educacion Superior de Ensenada. Carretera Tijuana-Ensenada 3918, Fraccionamiento Zona Playitas, 22860, Ensenada, B.C., Mexico
| | - José L Olivares-Romero
- Instituto de Ecologia A.C., Red de Estudios Moleculares Avanzados, Clúster Científico y Tecnologico BioMimic®, Campus III, Carretera Antigua a Coatepec N. 351, 91070, Xalapa, Veracruz, Mexico
| |
Collapse
|
13
|
Aman H, Wang YH, Chuang GJ. (Diacetoxyiodo)benzene-Mediated C-H Oxidation of Benzylic Acetals. ACS OMEGA 2020; 5:918-925. [PMID: 31956846 PMCID: PMC6964519 DOI: 10.1021/acsomega.9b04009] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/25/2019] [Accepted: 12/16/2019] [Indexed: 05/11/2023]
Abstract
A useful oxidation of C-H bond of benzylic acetals has been achieved. This method avoids the use of stoichiometric metals and is compatible with the presence of both electron-donating and electron-withdrawing substituents on the aromatic ring. Oxidation was carried out by rapid microwave irradiation of benzylic acetals with PhI(OAc)2 as the oxidant. This led to the oxidation of acetals into 2-acetoxy-1,3-dioxolanes. Furthermore, this transformation protocol encompasses a wide range of valuable conversions of these useful synthons into different carboxylic acid derivatives.
Collapse
|
14
|
Subaramanian M, Landge VG, Mondal A, Gupta V, Balaraman E. Nickel-Catalyzed Chemoselective Acetalization of Aldehydes With Alcohols under Neutral Conditions. Chem Asian J 2019; 14:4557-4562. [PMID: 31407487 DOI: 10.1002/asia.201900908] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2019] [Revised: 08/08/2019] [Indexed: 01/02/2023]
Abstract
A molecularly defined NiII -complex catalyzing the chemoselective acetalization of aldehydes with alcohols under neutral conditions is reported. The reaction is general, efficient and showed a wide substrate scope (including aliphatic aldehydes) as well as excellent functional group tolerance. Reusability of the present nickel catalyst is also demonstrated.
Collapse
Affiliation(s)
- Murugan Subaramanian
- Department of Chemistry, Indian Institute of Science Education and Research Tirupati (IISER-Tirupati), Tirupati-, 517507, India
| | - Vinod G Landge
- Department of Chemistry, Indian Institute of Science Education and Research Tirupati (IISER-Tirupati), Tirupati-, 517507, India
| | - Akash Mondal
- Department of Chemistry, Indian Institute of Science Education and Research Tirupati (IISER-Tirupati), Tirupati-, 517507, India
| | - Virendrakumar Gupta
- Polymer Synthesis & Catalysis, Reliance Research &, Development Centre, Reliance Industries Limited, Ghansoli-, 400701, Navi Mumbai, India
| | - Ekambaram Balaraman
- Department of Chemistry, Indian Institute of Science Education and Research Tirupati (IISER-Tirupati), Tirupati-, 517507, India
| |
Collapse
|
15
|
Studies of the Catalytic Activity of Iron (III) Porphyrins for the Protection of Carbonyl Groups in Homogeneous Media. Catalysts 2019. [DOI: 10.3390/catal9040334] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023] Open
Abstract
The protection of carbonyl groups that produce acetal products is a key reaction in fine chemistry due to the high reactivity of aldehydes and ketones in certain media. This process can be catalyzed by protic or Lewis acids. Since metalloporphyrins often possess free axial positions in the central metal, they can be applied as Lewis acid catalysts, allowing the additional coordination of substrates. Therefore, three ferric complexes were selected to be evaluated as catalysts for the acetalization of benzaldehyde with ethanol and triethyl orthoformate (TEOF) in the homogeneous phase: (i) 5,10,15,20-tetrakis(phenylporphyrin) iron (III) chloride (Fe0F); (ii) 5,10,15,20-tetrakis(2,6-difluorphenylporphyrin) iron (III) chloride (Fe2F); and (iii) 5,10,15,20-tetrakis(pentafluorphenylporphyrin) iron (III) chloride (Fe5F). The complex Fe5F showed the highest catalytic activity, and kinetic parameters were evaluated for this reaction, exhibiting an increasing rate of reaction of about 550-fold in comparison with the non-catalyzed reaction. The reaction scope was also investigated, and Fe5F was found to be active for the acetalization of benzaldehyde and acetophenone, with different protective agents such as alcohols, glycols, glycerol, and epoxide being selective for the formation of cyclic acetals. The protection of benzaldehyde with ethylene glycol and propylene glycol were also studied at different temperatures, and turnover frequency (TOF) values of up to 360 h−1 were determined at 40 °C in homogenous media without the need for solvent or drying agents.
Collapse
|
16
|
Lotfian N, Heravi MM, Mirzaei M, Heidari B. Applications of inorganic‐organic hybrid architectures based on polyoxometalates in catalyzed and photocatalyzed chemical transformations. Appl Organomet Chem 2019. [DOI: 10.1002/aoc.4808] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Nahid Lotfian
- Department of Chemistry, School of SciencesAlzahra University Vanak Tehran Iran
| | - Majid M. Heravi
- Department of Chemistry, School of SciencesAlzahra University Vanak Tehran Iran
| | - Masoud Mirzaei
- Department of Chemistry, Faculty of ScienceFerdowsi University of Mashhad Mashhad Iran
| | - Bahareh Heidari
- Department of Chemistry, School of SciencesAlzahra University Vanak Tehran Iran
| |
Collapse
|
17
|
Iram S, Imran M, Kanwal F, Iqbal Z, Deeba F, Iqbal QJ. Bismuth(III) based Metal Organic Frameworks: Luminescence, Gas Adsorption, and Antibacterial Studies. Z Anorg Allg Chem 2018. [DOI: 10.1002/zaac.201800383] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Shamaila Iram
- Institute of Chemistry; University of the Punjab; Lahore Pakistan
| | - Muhammad Imran
- Institute of Chemistry; University of the Punjab; Lahore Pakistan
| | - Farah Kanwal
- Institute of Chemistry; University of the Punjab; Lahore Pakistan
| | - Zafar Iqbal
- Department of Chemistry; Lahore University of Management and Sciences; Lahore Pakistan
| | - Farah Deeba
- Department of Zoology; University of the Punjab; Lahore Pakistan
| | - Qazi Javed Iqbal
- Department of Zoology; University of the Punjab; Lahore Pakistan
| |
Collapse
|
18
|
Dong JL, Yu LSH, Xie JW. A Simple and Versatile Method for the Formation of Acetals/Ketals Using Trace Conventional Acids. ACS OMEGA 2018; 3:4974-4985. [PMID: 31458712 PMCID: PMC6641695 DOI: 10.1021/acsomega.8b00159] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/27/2018] [Accepted: 04/12/2018] [Indexed: 06/01/2023]
Abstract
An important and surprising finding that the acetalization and ketalization of aldehydes and ketones with alcohols, respectively, proceed smoothly in the presence of 0.1 mol % acid, without removing water, has been presented. This process has many merits, such as commercial available catalysts with low cost and low loadings (as low as 0.03 mol %), quite a broad substrate scope (including various aldehydes, ketones, acid-sensitive substrates, and diols), a wide range of reaction temperature (-60 to 50 °C), high yields, large-scale preparation, environmental friendliness, and simple work-up procedure. This new protocol has also been successfully applied to protect the important organic compounds, such as 1,3-diols, 1,2-diols, acid-sensitive substrates, glucose, and 1,3-dicarbonyl compounds.
Collapse
|
19
|
Salah AMB, Fendri LB, Bataille T, Herrera RP, Naïli H. Synthesis, structural determination and antimicrobial evaluation of two novel Co II and Zn II halogenometallates as efficient catalysts for the acetalization reaction of aldehydes. Chem Cent J 2018; 12:24. [PMID: 29497955 PMCID: PMC5832660 DOI: 10.1186/s13065-018-0393-6] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2017] [Accepted: 02/15/2018] [Indexed: 12/04/2022] Open
Abstract
Background Complexes of imidazole derivatives with transition metal ions have attracted much attention because of their biological and pharmacological activities, such as antimicrobial, antifungal, antiallergic, antitumoural and antimetastatic properties. In addition, imidazoles occupy an important place owing to their meaningful catalytic activity in several processes, such as in hydroamination, hydrosilylation, Heck reaction and Henry reaction. In this work, we describe the crystallization of two halogenometallate based on 2-methylimidazole. Their IR, thermal analysis, catalytic properties and antibacterial activities have also been investigated. Results Two new isostructural organic-inorganic hybrid materials, based on 2-methyl-1H-imidazole, 1 and 2, were synthesized and fully structurally characterized. The analysis of their crystal packing reveals non-covalent interactions, including C/N–H···Cl hydrogen bonds and π···π stacking interactions, to be the main factor governing the supramolecular assembly of the crystalline complexes. The thermal decomposition of the complexes is a mono-stage process, confirmed by the three-dimensional representation of the powder diffraction patterns (TDXD). The catalytic structure exhibited promising activity using MeOH as solvent and as the unique source of acetalization. Moreover, the antimicrobial results suggested that metal-complexes exhibit significant antimicrobial activity. Conclusion This study highlights again the structural and the biological diversities within the field of inorganic–organic hybrids.
Collapse
Affiliation(s)
- Assila Maatar Ben Salah
- Laboratoire Physicochimie de l'Etat Solide, Département de Chimie, Faculté des Sciences de Sfax, Université de Sfax, BP 1171, 3000, Sfax, Tunisia
| | - Lilia Belghith Fendri
- Unité Enzymes et Bioconversion, Ecole Nationale d'Ingénieurs de Sfax, PB 1173, 3038, Sfax, Tunisia
| | - Thierry Bataille
- Ecole Nationale Supérieure de Chimie de Rennes, 11 Allée de Beaulieu, 35708, Rennes cedex 7, France
| | - Raquel P Herrera
- Laboratorio de Organocatálisis Asimétrica, Departamento de Química Orgánica, Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), CSIC-Universidad de Zaragoza, C/Pedro Cerbuna 12, 50009, Saragossa, Spain
| | - Houcine Naïli
- Laboratoire Physicochimie de l'Etat Solide, Département de Chimie, Faculté des Sciences de Sfax, Université de Sfax, BP 1171, 3000, Sfax, Tunisia.
| |
Collapse
|
20
|
Gazizov MB, Ivanova SY, Bashkirtseva NY, Ibragimov SN, Khairullin RA, Gazizova NN, Kostenko AD. Effect of the Catalyst Nature on the Structure of Products of the Reaction of 4-(Dibromomethyl)Benzaldehyde with Trialkyl Orthoformates. RUSS J GEN CHEM+ 2018. [DOI: 10.1134/s1070363217120052] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
21
|
Highly Efficient Acetalization and Ketalization Catalyzed by Cobaloxime under Solvent-Free Condition. Catalysts 2018. [DOI: 10.3390/catal8020048] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
|
22
|
Singh K, Danieli E, Blümich B. Desktop NMR spectroscopy for real-time monitoring of an acetalization reaction in comparison with gas chromatography and NMR at 9.4 T. Anal Bioanal Chem 2017; 409:7223-7234. [PMID: 29030668 DOI: 10.1007/s00216-017-0686-y] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2017] [Revised: 09/18/2017] [Accepted: 09/29/2017] [Indexed: 10/18/2022]
Abstract
Monitoring of chemical reactions in real-time is in demand for process control. Different methods such as gas chromatography (GC), mass spectroscopy, infrared spectroscopy, and nuclear magnetic resonance (NMR) are used for that purpose. The current state-of-the-art compact NMR systems provide a useful method to employ with various reaction conditions for studying chemical reactions inside the fume hood at the chemical workplace. In the present study, an acetalization reaction was investigated with compact NMR spectroscopy in real-time. Acetalization is used for multistep synthesis of the variety of organic compounds to protect particular chemical groups. A compact 1 T NMR spectrometer with a permanent magnet was employed to monitor the acid catalyzed acetalization of the p-nitrobenzaldehyde with ethylene glycol. The concentrations of both reactant and product were followed by peak integrals in single-scan 1H NMR spectra as a function of time. The reaction conditions were varied in terms of temperature, agitation speed, catalyst loading, and feed concentrations in order to determine the activation energy with the help of a pseudo-homogeneous kinetic model. For low molar ratios of aldehyde and glycol, the equilibrium conversions were lower than for the stoichiometric ratio. Increasing catalyst concentration leads to faster conversion. The data obtained with low-field NMR spectroscopy were compared with data from GC and NMR spectroscopy at 9.4 T acquired in batch mode by extracting samples at regular time intervals. The reaction kinetics followed by either method agreed well. The activation energies for forward and backward reactions were determined by real-time monitoring with compact NMR at 1 T were 48 ± 5 and 60 ± 4 kJ/mol, respectively. The activation energies obtained with gas chromatography for forward and backward reactions were 48 ± 4 and 51 ± 4 kJ/mol. The equilibrium constant decreases with increasing temperature as expected for an exothermic reaction. The impact of dense sampling with online NMR and sparse sampling with GC was observed on the kinetic outcome using the same kinetic model. Graphical abstract Acetalization reaction kinetics were monitored with real-time desktop NMR spectroscopy at 1 T. Each data point was obtained at regular intervals with a single shot in 15 s. The kinetics was compared with sparsely sampled data obtained with GC and NMR at 9.4 T.
Collapse
Affiliation(s)
- Kawarpal Singh
- Institut für Technische Chemie und Makromolekulare Chemie, RWTH Aachen University, Worringerweg 1, 52074, Aachen, Germany.
| | - Ernesto Danieli
- Institut für Technische Chemie und Makromolekulare Chemie, RWTH Aachen University, Worringerweg 1, 52074, Aachen, Germany
| | - Bernhard Blümich
- Institut für Technische Chemie und Makromolekulare Chemie, RWTH Aachen University, Worringerweg 1, 52074, Aachen, Germany
| |
Collapse
|
23
|
Banerjee B. Bismuth(III) triflate: An Efficient Catalyst for the Synthesis of Diverse Biologically Relevant Heterocycles. ChemistrySelect 2017. [DOI: 10.1002/slct.201701441] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Bubun Banerjee
- Department of Chemistry; Indus International University, V.P.O. Bathu, Distt. Una; Himachal Pradesh- 174301 India
| |
Collapse
|
24
|
Niu Q, Xing L, Li C. From organocatalysed desilylations to high-yielding benzylidenations of electron-deficient benzaldehydes. JOURNAL OF CHEMICAL RESEARCH 2017. [DOI: 10.3184/174751917x14955339414758] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
A new type of organoprecatalyst (MeSCH2Cl/KI) for desilylation and benzylidenation reactions has been designed. Both reactions are user friendly and high yielding (71–>99%) and have fast reaction rates. The desilylation of iodo silyl ethers was achieved with no sequential etherification side reactions like those seen for reactions when using TBAF. In the application of the catalytic system to a 6-TBDMS ether of a glucoside, glucoside benzylidenations using electron-deficient benzaldehydes were achieved in 87% yield compared with the previously reported yields of 69–77%. Altogether, 14 benzylidenation reactions were realised using silyloxy alcohols and electron-deficient benzaldehydes instead of their activated acetal forms. In terms of reaction rates and yields, the order of the benzylidenations is p-fluorobenzaldehyde > benzaldehyde > p-anisaldehyde, and a possible mechanism is discussed. These experiments have preliminarily differentiated this cost-effective catalytic system from the classic Lewis acids.
Collapse
Affiliation(s)
- Qun Niu
- Department of Chemistry, School of Science, Tianjin University, 135 Yaguan Road, Jinnan District, Tianjin 300354, P.R. China
| | - Linlin Xing
- Department of Chemistry, School of Science, Tianjin University, 135 Yaguan Road, Jinnan District, Tianjin 300354, P.R. China
| | - Chunbao Li
- Department of Chemistry, School of Science, Tianjin University, 135 Yaguan Road, Jinnan District, Tianjin 300354, P.R. China
| |
Collapse
|
25
|
Yi H, Niu L, Wang S, Liu T, Singh AK, Lei A. Visible-Light-Induced Acetalization of Aldehydes with Alcohols. Org Lett 2016; 19:122-125. [PMID: 28004943 DOI: 10.1021/acs.orglett.6b03403] [Citation(s) in RCA: 51] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
In this work, we have achieved a simple and general method for acetalization of aldehydes by means of a photochemical reaction under low-energy visible light irradiation. A broad range of aromatic, heteroaromatic, and aliphatic aldehydes have been protected under neutral conditions in good to excellent yields using a catalytic amount of Eosin Y as the photocatalyst. Our visible light mediated acetalization strategies are successful for more challenging acid-sensitive aldehydes and sterically hindered aldehydes. Notably, this protocol is chemoselective to aldehydes, while ketones remain intact.
Collapse
Affiliation(s)
- Hong Yi
- College of Chemistry and Molecular Sciences, Institute for Advanced Studies (IAS), Wuhan University , Wuhan, Hubei 430072, P. R. China
| | - Linbin Niu
- College of Chemistry and Molecular Sciences, Institute for Advanced Studies (IAS), Wuhan University , Wuhan, Hubei 430072, P. R. China
| | - Shengchun Wang
- College of Chemistry and Molecular Sciences, Institute for Advanced Studies (IAS), Wuhan University , Wuhan, Hubei 430072, P. R. China
| | - Tianyi Liu
- College of Chemistry and Molecular Sciences, Institute for Advanced Studies (IAS), Wuhan University , Wuhan, Hubei 430072, P. R. China
| | - Atul K Singh
- College of Chemistry and Molecular Sciences, Institute for Advanced Studies (IAS), Wuhan University , Wuhan, Hubei 430072, P. R. China
| | - Aiwen Lei
- College of Chemistry and Molecular Sciences, Institute for Advanced Studies (IAS), Wuhan University , Wuhan, Hubei 430072, P. R. China.,National Research Center for Carbohydrate Synthesis, Jiangxi Normal University , Nanchang, Jiangxi 330022, P. R. China
| |
Collapse
|
26
|
Affiliation(s)
- Pierrick Ondet
- Institut de Chimie de Nice; UMR 7272; Université Nice Sophia Antipolis; Parc Valrose 06108 Nice Cedex 2 France
| | - Gilles Lemière
- Institut de Chimie de Nice; UMR 7272; Université Nice Sophia Antipolis; Parc Valrose 06108 Nice Cedex 2 France
| | - Elisabet Duñach
- Institut de Chimie de Nice; UMR 7272; Université Nice Sophia Antipolis; Parc Valrose 06108 Nice Cedex 2 France
| |
Collapse
|
27
|
Radulović NS, Nešić MS. Diverse acetals from stoichiometric amounts of aldehydes and alcohols under very mild conditions: a new twist to PPh3–CCl4 reagent combination. RSC Adv 2016. [DOI: 10.1039/c6ra19980a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A very mild, stoichiometric PPh3–CCl4 method for the preparation of diverse acetals of aromatic and aliphatic aldehydes was developed.
Collapse
Affiliation(s)
- Niko S. Radulović
- Department of Chemistry
- Faculty of Science and Mathematics
- University of Niš
- Niš
- Serbia
| | | |
Collapse
|
28
|
Saïd S, Naïli H, Bataille T, Herrera RP. Crystallisation, thermal analysis and acetal protection activity of new layered Zn( ii) hybrid polymorphs. CrystEngComm 2016. [DOI: 10.1039/c6ce00486e] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
29
|
Mansoor SS, Aswin K, Logaiya K, Sudhan S. An efficient synthesis of β-amino ketone compounds through one-pot three-component Mannich-type reactions using bismuth nitrate as catalyst. JOURNAL OF SAUDI CHEMICAL SOCIETY 2015. [DOI: 10.1016/j.jscs.2012.04.008] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
|
30
|
Tanemura K, Suzuki T. Highly Efficient Acetalization of Carbonyl Compounds Catalyzed by Aniline–Aldehyde Resin Salts. CHEM LETT 2015. [DOI: 10.1246/cl.150166] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Kiyoshi Tanemura
- Chemical Laboratory, School of Life Dentistry at Niigata, Nippon Dental University
| | - Tsuneo Suzuki
- Chemical Laboratory, School of Life Dentistry at Niigata, Nippon Dental University
| |
Collapse
|
31
|
Wang S, Teng F, Zhao Y. Effect of the molecular structure and surface charge of a bismuth catalyst on the adsorption and photocatalytic degradation of dye mixtures. RSC Adv 2015. [DOI: 10.1039/c5ra14931b] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Diagram of interaction of MO with MB (RhB) in dye mixture solutions.
Collapse
Affiliation(s)
- Shurong Wang
- Jiangsu Engineering and Technology Research Center of Environmental Cleaning Materials (ECM)
- Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control (AEMPC)
- Jiangsu Joint Laboratory of Atmospheric Pollution Control (APC)
- Collaborative Innovation Center of Atmospheric Environment and Equipment Technology (AEET)
- School of Environmental Science and Engineering
| | - Fei Teng
- Jiangsu Engineering and Technology Research Center of Environmental Cleaning Materials (ECM)
- Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control (AEMPC)
- Jiangsu Joint Laboratory of Atmospheric Pollution Control (APC)
- Collaborative Innovation Center of Atmospheric Environment and Equipment Technology (AEET)
- School of Environmental Science and Engineering
| | - Yunxuan Zhao
- Jiangsu Engineering and Technology Research Center of Environmental Cleaning Materials (ECM)
- Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control (AEMPC)
- Jiangsu Joint Laboratory of Atmospheric Pollution Control (APC)
- Collaborative Innovation Center of Atmospheric Environment and Equipment Technology (AEET)
- School of Environmental Science and Engineering
| |
Collapse
|
32
|
Marri SR, Behera J. Synthesis, structure and photoluminescence properties of amine-templated open-framework bismuth sulfates. J SOLID STATE CHEM 2014. [DOI: 10.1016/j.jssc.2013.10.032] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
33
|
Zhao S, Jia Y, Song YF. Acetalization of aldehydes and ketones over H4[SiW12O40] and H4[SiW12O40]/SiO2. Catal Sci Technol 2014. [DOI: 10.1039/c4cy00021h] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
A Keggin cluster of H4[SiW12O40] (H-SiW12) has been developed to catalyze the acetalization of aldehydes and ketones under solvent-free conditions, and could be recycled at least ten times without an obvious decrease in catalytic activity.
Collapse
Affiliation(s)
- Shen Zhao
- State Key Laboratory of Chemical Resource Engineering
- Beijing University of Chemical Technology
- Beijing 100029, PR China
| | - Yueqing Jia
- State Key Laboratory of Chemical Resource Engineering
- Beijing University of Chemical Technology
- Beijing 100029, PR China
| | - Yu-Fei Song
- State Key Laboratory of Chemical Resource Engineering
- Beijing University of Chemical Technology
- Beijing 100029, PR China
| |
Collapse
|
34
|
Liu Y, Jiang B, Zhang W, Xu Z. Multifold Bond Cleavage and Formation between MeOH and Quinoxalines (or Benzothiazoles): Synthesis of Carbaldehyde Dimethyl Acetals. J Org Chem 2013; 78:966-80. [DOI: 10.1021/jo302450f] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Yunkui Liu
- State Key
Laboratory Breeding Base of Green Chemistry-Synthesis Technology, Zhejiang University of Technology, Hangzhou 310014,
People’s Republic of China
- College of Chemistry & Materials Engineering, Wenzhou University, Zhejiang Province, Wenzhou 325027, People’s Republic of China
| | - Bo Jiang
- State Key
Laboratory Breeding Base of Green Chemistry-Synthesis Technology, Zhejiang University of Technology, Hangzhou 310014,
People’s Republic of China
| | - Wei Zhang
- State Key
Laboratory Breeding Base of Green Chemistry-Synthesis Technology, Zhejiang University of Technology, Hangzhou 310014,
People’s Republic of China
| | - Zhenyuan Xu
- State Key
Laboratory Breeding Base of Green Chemistry-Synthesis Technology, Zhejiang University of Technology, Hangzhou 310014,
People’s Republic of China
| |
Collapse
|
35
|
Miao Z, Xu L, Song H, Zhao H, Chou L. One-pot synthesis of ordered mesoporous zirconium oxophosphate with high thermostability and acidic properties. Catal Sci Technol 2013. [DOI: 10.1039/c3cy00085k] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
36
|
Stereospecific novel glycosylation of hydroxy ?-lactams via iodine-catalyzed reaction: a new method for optical resolution. Tetrahedron 2012. [DOI: 10.1016/j.tet.2012.01.078] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
|
37
|
Ghashang M. Aluminum hydrogen sulfate [Al(HSO4)3] as an efficient catalyst for the preparation of thioacetals. RESEARCH ON CHEMICAL INTERMEDIATES 2012. [DOI: 10.1007/s11164-012-0802-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
|
38
|
Smith BM, Kubczyk TM, Graham AE. Indium(III) triflate catalysed transacetalisation reactions of diols and triols under solvent-free conditions. Tetrahedron 2012. [DOI: 10.1016/j.tet.2012.07.048] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
39
|
Abstract
With increasing environmental concerns, the need for environmentally friendly organic synthesis has gained increased importance. In this regard, bismuth(III) compounds are especially attractive as "green" reagents and catalysts for organic synthesis. Bismuth(III) compounds are remarkably nontoxic, relatively air and moisture stable, and easy to handle. The contributions from our laboratory in the last 5 years in the field of applications of bismuth(III) compounds as catalysts are presented.
Collapse
|
40
|
Shinde PV, Labade VB, Gujar JB, Shingate BB, Shingare MS. Bismuth triflate catalyzed solvent-free synthesis of 2,4,6-triaryl pyridines and an unexpected selective acetalization of tetrazolo[1,5-a]-quinoline-4-carbaldehydes. Tetrahedron Lett 2012. [DOI: 10.1016/j.tetlet.2012.01.059] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
|
41
|
Madabhushi S, Mallu KKR, Chinthala N, Beeram CR, Vangipuram VS. Efficient and chemoselective acetalization and thioacetalization of carbonyls and subsequent deprotection using InF3 as a reusable catalyst. Tetrahedron Lett 2012. [DOI: 10.1016/j.tetlet.2011.11.135] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
42
|
Dutta Chowdhury A, Kumar Lahiri G. A generalized approach for iron catalyzed chemo- and regioselective formation of anti-Markovnikov acetals from styrene derivatives. Chem Commun (Camb) 2012; 48:3448-50. [DOI: 10.1039/c2cc17889c] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
43
|
Yue H, Zhao Y, Ma X, Gong J. Ethylene glycol: properties, synthesis, and applications. Chem Soc Rev 2012; 41:4218-44. [DOI: 10.1039/c2cs15359a] [Citation(s) in RCA: 629] [Impact Index Per Article: 52.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
|
44
|
Smith BM, Kubczyk TM, Graham AE. Metal triflate catalysed acetal exchange reactions of glycerol under solvent-free conditions. RSC Adv 2012. [DOI: 10.1039/c2ra20100c] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
|
45
|
Karami B, Taei M, Khodabakhshi S, Jamshidi M. Synthesis of 1,3-dithiane and 1,3-dithiolane derivatives by tungstate sulfuric acid: recyclable and green catalyst. J Sulphur Chem 2011. [DOI: 10.1080/17415993.2011.629659] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
Affiliation(s)
- Bahador Karami
- a Department of Chemistry , Yasouj University , PO Box 353, Yasouj , 75918-74831 , Iran
| | - Mahbubeh Taei
- a Department of Chemistry , Yasouj University , PO Box 353, Yasouj , 75918-74831 , Iran
| | - Saeed Khodabakhshi
- a Department of Chemistry , Yasouj University , PO Box 353, Yasouj , 75918-74831 , Iran
| | - Masih Jamshidi
- a Department of Chemistry , Yasouj University , PO Box 353, Yasouj , 75918-74831 , Iran
| |
Collapse
|
46
|
Bismuth-catalyzed addition of silyl nucleophiles to carbonyl compounds and imines. Top Curr Chem (Cham) 2011; 311:69-114. [PMID: 22048688 DOI: 10.1007/128_2011_298] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
Abstract
Bismuth triflate was found to be an efficient catalyst both in the Mannich-type reaction of silyl enolates and in the Sakurai reaction of allyltrimethylsilane with N-alkoxycarbonylamino sulfones. The reactions proceeded smoothly with a low catalyst loading of Bi(OTf)(3)·4H(2)O (0.5-5.0 mol%) to afford the corresponding protected β-amino carbonyl compounds and homoallylic amines in very good yields (up to 96%). The latter compounds could also be obtained via a bismuth-mediated three-component reaction. We have also developed an efficient vinylogous Mukaiyama aldol reaction of 2-(trimethylsilyloxy)furan with various aromatic aldehydes mediated by bismuth triflate in a low catalyst loading (1 mol%). The reaction proceeds rapidly and affords the corresponding 5-[hydroxy(aryl)methyl]furan-2(5H)-ones in high yields with good to very good diastereoselectivities (diastereoisomeric ratios>98:2). Such selectivities, although previously reported with other Lewis acids, could be achieved with a much lower catalyst loading. 5-[Hydroxy(alkyl)methyl]furan-2(5H)-ones derived from ketones could also be obtained with good diastereoselectivities. The vinylogous Mukaiyama aldol reaction has also been extended to 2,2-dimethyl-6-methylene-4-(trimethyl-silyloxy)-1,3-diox-4-ene using 1 mol% of Bi(OTf)(3)·4H(2)O.
Collapse
|
47
|
Smith BM, Graham AE. Indium triflate mediated tandem acetalisation-acetal exchange reactions under solvent-free conditions. Tetrahedron Lett 2011. [DOI: 10.1016/j.tetlet.2011.09.087] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
|
48
|
Yadav JS, Antony A, Reddy BVS. Bismuth(III) salts as synthetic tools in organic transformations. Top Curr Chem (Cham) 2011; 311:229-69. [PMID: 22025068 DOI: 10.1007/128_2011_274] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Bismuth is the heaviest stable element of the periodic table and even though it carries the status of heavy metal, it is rated as relatively nontoxic and noncarcinogenic unlike its neighboring elements. Additionally, the fact that it tolerates air and moisture makes the chemistry of bismuth attractive to synthetic chemists. The catalytic nature of this metal is attributed to the capability of its salts to acts as Lewis acids in reactions. The nontoxicity together with the ability to endure moisture makes bismuth compounds favorites of chemists and scientists who are concerned about environmental hazards, and such properties are highly desirable for scale-up of a method. The Lewis acidic nature of salts of this element have been thoroughly investigated in various types of reactions such as cycloaddition reactions, reactions of sugars, protection and deprotection reactions, synthesis of heterocyclic systems etc. Since the 1990s, various research groups have successfully utilized this catalytic nature for many organic transformations. Our group's contribution towards the development of methodologies that are useful in accomplishing various functional group manipulations by making use of the catalytic properties of bismuth salts is portrayed here. The mechanistic aspects and the catalytic efficiency of the bismuth(III) salts are accented together with the synthetic utility and the biological and pharmacological applications of the methodologies developed.
Collapse
Affiliation(s)
- J S Yadav
- Division of Organic Chemistry, Indian Institute of Chemical Technology, Hyderabad, India.
| | | | | |
Collapse
|
49
|
Larghi EL, Kaufman TS. Synthesis of Oxacycles Employing the Oxa‐Pictet–Spengler Reaction: Recent Developments and New Prospects. European J Org Chem 2011. [DOI: 10.1002/ejoc.201100271] [Citation(s) in RCA: 89] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Enrique L. Larghi
- Institute of Chemistry of Rosario (IQUIR, CONICET‐UNR)and Department of Organic Chemistry, School of Pharmaceuticaland Biochemical Sciences, National University of Rosario, Suipacha 531 (S2002LRK) Rosario, Argentina, Fax: +54‐341‐4370477, ext. 35
| | - Teodoro S. Kaufman
- Institute of Chemistry of Rosario (IQUIR, CONICET‐UNR)and Department of Organic Chemistry, School of Pharmaceuticaland Biochemical Sciences, National University of Rosario, Suipacha 531 (S2002LRK) Rosario, Argentina, Fax: +54‐341‐4370477, ext. 35
| |
Collapse
|
50
|
Bothwell JM, Krabbe SW, Mohan RS. Applications of bismuth(III) compounds in organic synthesis. Chem Soc Rev 2011; 40:4649-707. [PMID: 21589974 DOI: 10.1039/c0cs00206b] [Citation(s) in RCA: 178] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This review article summarizes the applications of bismuth(III) compounds in organic synthesis since 2002. Although there are an increasing number of reports on applications of bismuth(III) salts in polymerization reactions, and their importance is acknowledged, they are not included in this review. This review is largely organized by the reaction type although some reactions can clearly be placed in multiple sections. While every effort has been made to include all relevant reports in this field, any omission is inadvertent and we apologize in advance for the same (358 references).
Collapse
Affiliation(s)
- Jason M Bothwell
- Laboratory for Environmentally Friendly Organic Synthesis, Department of Chemistry, Illinois Wesleyan University, Bloomington, IL 61701, USA
| | | | | |
Collapse
|