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High Yield Synthesis of Curcumin and Symmetric Curcuminoids: A "Click" and "Unclick" Chemistry Approach. MOLECULES (BASEL, SWITZERLAND) 2022; 28:molecules28010289. [PMID: 36615495 PMCID: PMC9822029 DOI: 10.3390/molecules28010289] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/07/2022] [Revised: 12/23/2022] [Accepted: 12/27/2022] [Indexed: 01/03/2023]
Abstract
The worldwide known and employed spice of Asian origin, turmeric, receives significant attention due to its numerous purported medicinal properties. Herein, we report an optimized synthesis of curcumin and symmetric curcuminoids of aromatic (bisdemethoxycurcumin) and heterocyclic type, with yields going from good to excellent using the cyclic difluoro-boronate derivative of acetylacetone prepared by reaction of 2,4-pentanedione with boron trifluoride in THF (ca. 95%). The subsequent cleavage of the BF2 group is of significant importance for achieving a high overall yield in this two-step procedure. Such cleavage occurs by treatment with hydrated alumina (Al2O3) or silica (SiO2) oxides, thus allowing the target heptanoids obtained in high yields as an amorphous powder to be filtered off directly from the reaction media. Furthermore, crystallization instead of chromatographic procedures provides a straightforward purification step. The ease and efficiency with which the present methodology can be applied to synthesizing the title compounds earns the terms "click" and "unclick" applied to describe particularly straightforward, efficient reactions. Furthermore, the methodology offers a simple, versatile, fast, and economical synthetic alternative for the obtention of curcumin (85% yield), bis-demethoxycurcumin (78% yield), and the symmetrical heterocyclic curcuminoids (80-92% yield), in pure form and excellent yields.
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Fourteen-member silacycle built by cascade reactions induced by a platinum catalyst. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2022.133760] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Seckler D, Dea CM, Rios EAM, de Godoi M, Rampon DDS, D’Oca MGM, D'Oca CDRM. Rice straw ash extract/glycerol: an efficient sustainable approach for Knoevenagel condensation. NEW J CHEM 2022. [DOI: 10.1039/d1nj05755c] [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
WERSA/glycerol is described as a powerful combination for the green approach of the Knoevenagel reaction, without any additional catalyst, base or promoter.
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Affiliation(s)
- Diego Seckler
- Laboratory of Polymers and Catalysis (LAPOCA), Department of Chemistry, Federal University of Paraná – UFPR, P. O. Box 19032, Curitiba, PR, 81531-990, Brazil
- Kolbe's Laboratory of Organic Synthesis, Department of Chemistry, Federal University of Paraná – UFPR, P. O. Box 19032, Curitiba, PR, 81531-990, Brazil
| | - Camila M. Dea
- Laboratory of Polymers and Catalysis (LAPOCA), Department of Chemistry, Federal University of Paraná – UFPR, P. O. Box 19032, Curitiba, PR, 81531-990, Brazil
| | - Elise Ane Maluf Rios
- Laboratory of Polymers and Catalysis (LAPOCA), Department of Chemistry, Federal University of Paraná – UFPR, P. O. Box 19032, Curitiba, PR, 81531-990, Brazil
| | - Marcelo de Godoi
- Food and Chemistry School, Federal University of Rio Grande – FURG, RS 95500-000, Brazil
| | - Daniel da Silveira Rampon
- Laboratory of Polymers and Catalysis (LAPOCA), Department of Chemistry, Federal University of Paraná – UFPR, P. O. Box 19032, Curitiba, PR, 81531-990, Brazil
| | - Marcelo Gonçalves Montes D’Oca
- Kolbe's Laboratory of Organic Synthesis, Department of Chemistry, Federal University of Paraná – UFPR, P. O. Box 19032, Curitiba, PR, 81531-990, Brazil
| | - Caroline Da Ros Montes D'Oca
- Laboratory of Polymers and Catalysis (LAPOCA), Department of Chemistry, Federal University of Paraná – UFPR, P. O. Box 19032, Curitiba, PR, 81531-990, Brazil
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Fan W, Verrier C, Queneau Y, Popowycz F. 5-Hydroxymethylfurfural (HMF) in Organic Synthesis: A Review of its Recent Applications Towards Fine Chemicals. Curr Org Synth 2019; 16:583-614. [DOI: 10.2174/1570179416666190412164738] [Citation(s) in RCA: 70] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2018] [Revised: 02/11/2019] [Accepted: 03/11/2019] [Indexed: 12/25/2022]
Abstract
Background:
5-Hydroxymethylfurfural (5-HMF) is a biomass-derived
platform chemical, which can be produced from carbohydrates. In the past decades, 5-
HMF has received tremendous attention because of its wide applications in the
production of various value-added chemicals, materials and biofuels. The manufacture
and the catalytic conversion of 5-HMF to simple industrially-important bulk chemicals
have been well reviewed. However, employing 5-HMF as a building block in organic
synthesis has never been summarized exclusively, despite the rapid development in this
area.
Objective:
The aim of this review is to bring a fresh perspective on the use of 5-HMF in
organic synthesis, to the exclusion of already well documented conversion of 5-HMF
towards relatively simple molecules such as 2,5-furandicarboxylic acid, 2,5-dimethylfuran and so on notably
used as monomers or biofuels.
Conclusion:
As it has been shown throughout this review, 5-HMF has been the object of numerous studies on
its use in fine chemical synthesis. Thanks to the presence of different functional groups on this platform
chemical, it proved to be an excellent starting material for the preparation of various fine chemicals. The use of
this C-6 synthon in novel synthetic routes is appealing, as it allows the incorporation of renewable carbonsources
into the final targets.
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Affiliation(s)
- Weigang Fan
- Universite de Lyon, ICBMS, UMR 5246, CNRS, Universite Lyon 1, INSA Lyon, CPE Lyon, Batiment Edgar Lederer, F-69622 Villeurbanne Cedex, France
| | - Charlie Verrier
- Universite de Lyon, ICBMS, UMR 5246, CNRS, Universite Lyon 1, INSA Lyon, CPE Lyon, Batiment Edgar Lederer, F-69622 Villeurbanne Cedex, France
| | - Yves Queneau
- Universite de Lyon, ICBMS, UMR 5246, CNRS, Universite Lyon 1, INSA Lyon, CPE Lyon, Batiment Edgar Lederer, F-69622 Villeurbanne Cedex, France
| | - Florence Popowycz
- Universite de Lyon, ICBMS, UMR 5246, CNRS, Universite Lyon 1, INSA Lyon, CPE Lyon, Batiment Edgar Lederer, F-69622 Villeurbanne Cedex, France
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de Vries JG. Green Syntheses of Heterocycles of Industrial Importance. 5-Hydroxymethylfurfural as a Platform Chemical. ADVANCES IN HETEROCYCLIC CHEMISTRY 2017. [DOI: 10.1016/bs.aihch.2016.09.001] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/03/2022]
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