1
|
Zhang N, Yu X, Zhang Y. Recent Advances of Thiamine in Organic Synthesis. Adv Synth Catal 2022. [DOI: 10.1002/adsc.202200098] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Ning Zhang
- School of Chemistry and Pharmaceutical Engineering Jilin Institute of Chemical Technology Jilin 132022 People's Republic of China
- College of Chemistry Jilin University Changchun 130012 People's Republic of China
| | - Xue Yu
- School of Chemistry and Pharmaceutical Engineering Jilin Institute of Chemical Technology Jilin 132022 People's Republic of China
| | - Yuewei Zhang
- School of Chemistry and Pharmaceutical Engineering Jilin Institute of Chemical Technology Jilin 132022 People's Republic of China
| |
Collapse
|
2
|
Cheibas C, Fincias N, Casaretto N, Garrec J, El Kaïm L. Passerini-Smiles Reaction of α-Ketophosphonates: Platform for Phospha-Brook/Smiles Embedded Cascades. Angew Chem Int Ed Engl 2022; 61:e202116249. [PMID: 35001479 DOI: 10.1002/anie.202116249] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2021] [Indexed: 11/07/2022]
Abstract
The Passerini-Smiles reactions of α-ketophosphonates with nitrophenols has been used as a platform to observe complex cascades involving multiple Smiles transfers coupled with phospha-Brook rearrangement. When using 4-nitrophenols a rare 1,3-Truce-Smiles rearrangement is observed leading to diarylacetamide derivatives. 2-Nitro-derivatives lead to a completely different reactivity pattern that may be explained by a nitro to nitroso conversion followed by a σ-π metathesis. All mechanistic assumptions are confirmed by DFT calculations performed on both families of adducts. The potential of this work has been further demonstrated by the use of N-aryl α-ketoamides as alternative starting materials for these cascades as well as the disclosure of new aza-Nazarov access to hydroxy-indolones.
Collapse
Affiliation(s)
- Cristina Cheibas
- Laboratoire de Synthèse Organique (LSO-UMR 76523), CNRS, Ecole Polytechnique, ENSTA-Paris, Institut Polytechnique de Paris, 828 Bd des Maréchaux, 91128, Palaiseau Cedex, France
| | - Nicolas Fincias
- Laboratoire de Synthèse Organique (LSO-UMR 76523), CNRS, Ecole Polytechnique, ENSTA-Paris, Institut Polytechnique de Paris, 828 Bd des Maréchaux, 91128, Palaiseau Cedex, France
| | - Nicolas Casaretto
- Laboratoire de Chimie Moléculaire (LCM-UMR 9168), CNRS, Ecole Polytechnique, Institut Polytechnique de Paris, 91128, Palaiseau Cedex, France
| | - Julian Garrec
- Unité Chimie et Procédés (UCP), ENSTA-Paris, Institut Polytechnique de Paris, 91128, Palaiseau Cedex, France
| | - Laurent El Kaïm
- Laboratoire de Synthèse Organique (LSO-UMR 76523), CNRS, Ecole Polytechnique, ENSTA-Paris, Institut Polytechnique de Paris, 828 Bd des Maréchaux, 91128, Palaiseau Cedex, France
| |
Collapse
|
3
|
El Kaim L, Cheibas C, Fincias N, Casaretto N, Garrec J. Passerini‐Smiles Reaction of a‐Ketophosphonates: Platform for Phospha‐Brook/Smiles Embedded Cascades. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202116249] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- laurent El Kaim
- Ecole Nationale Superieure de Techniques Avancees Chemistry department 828 Bd des mar�chaux 91120 Palaiseau FRANCE
| | - Cristina Cheibas
- Groupe ENSTA: Ecole Nationale Superieure de Techniques Avancees chemistry FRANCE
| | - Nicolas Fincias
- Groupe ENSTA: Ecole Nationale Superieure de Techniques Avancees chemistry FRANCE
| | | | - Julian Garrec
- Groupe ENSTA: Ecole Nationale Superieure de Techniques Avancees chemistry FRANCE
| |
Collapse
|
4
|
Chemoenzymatic Stereodivergent Synthesis of All the Possible Stereoisomers of the 2,3-Dimethylglyceric Acid Ethyl Ester. Catalysts 2021. [DOI: 10.3390/catal11121440] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
2,3-dihydroxy-2-methylbutyric acid, also known as 2,3-dimethylglyceric acid, constitutes the acyl and/or the alcoholic moiety of many bioactive natural esters. Herein, we describe a chemoenzymatic methodology which gives access to all the four possible stereoisomers of the 2,3-dimethylglyceric acid ethyl ester. The racemic ethyl α-acetolactate, produced by the N-heterocycle carbene (NHC)-catalyzed coupling of ethyl pyruvate and methylacetoin was employed as the starting material. The racemic mixture was resolved through (S)-selective reductions, promoted by the acetylacetoin reductase (AAR) affording the resulting ethyl (2R,3S)-2,3-dimethylglycerate; the isolated remaining (S)-ethyl α-acetolactate was successively treated with baker’s yeast to obtain the corresponding (2S,3S) stereoisomer. syn-2,3-Dimethylgliceric acid ethyl ester afforded by reducing the rac-α-acetolactate with NaBH4 in the presence of ZnCl2 was kinetically resolved through selective acetylation with lipase B from Candida antarctica (CAL-B) and vinyl acetate to access to (2S,3R) stereoisomer. Finally, the (2R,3R) stereoisomer, was prepared by C3 epimerization of the (2R,3S) stereoisomer recovered from the above kinetic resolution, achieved through the TEMPO-mediated oxidation, followed by the reduction of the produced ketone with NaBH4. The resulting 2,3-dimethylglycertate enriched in the (2R,3R) stereoisomer was submitted to stereospecicific acetylation with vinyl acetate and CAL-B in order to separate the major stereoisomer. The entire procedure enabled conversion of the racemic α-acetolactate into the four enantiopure stereoisomers of the ethyl 2,3-dihydroxy-2-methylbutyrate with the following overall yields: 42% for the (2R,3S), 40% for the (2S,3S), 42% for the (2S,3R) and 20% for the (2R,3R).
Collapse
|
5
|
Giovannini PP, Müller M, Presini F, Baraldi S, Ragno D, Di Carmine G, Jacoby C, Bernacchia G, Bortolini O. A One‐Pot Two‐Step Enzymatic Pathway for the Synthesis of Enantiomerically Enriched Vicinal Diols. European J Org Chem 2021. [DOI: 10.1002/ejoc.202001542] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Pier Paolo Giovannini
- Dipartimento di Scienze Chimiche e Farmaceutiche Università degli studi di Ferrara Via Luigi Borsari 46 44121 Ferrara Italy
| | - Michel Müller
- Institute of Pharmaceutical Sciences Albert-Ludwigs-Universität Freiburg Albertstrasse 25 79104 Freiburg Germany
| | - Francesco Presini
- Dipartimento di Scienze Chimiche e Farmaceutiche Università degli studi di Ferrara Via Luigi Borsari 46 44121 Ferrara Italy
| | - Serena Baraldi
- Dipartimento di Scienze Chimiche e Farmaceutiche Università degli studi di Ferrara Via Luigi Borsari 46 44121 Ferrara Italy
| | - Daniele Ragno
- Dipartimento di Scienze Chimiche e Farmaceutiche Università degli studi di Ferrara Via Luigi Borsari 46 44121 Ferrara Italy
| | - Graziano Di Carmine
- Dipartimento di Scienze Chimiche e Farmaceutiche Università degli studi di Ferrara Via Luigi Borsari 46 44121 Ferrara Italy
| | - Christian Jacoby
- Microbiology Faculty of Biology Albert-Ludwigs-Universität Freiburg Schänzlestr. 1 79104 Freiburg Germany
| | - Giovanni Bernacchia
- Dipartimento di Scienze della Vita e Biotecnologie Università degli studi di Ferrara Via Luigi Borsari 46 44121 Ferrara Italy
| | - Olga Bortolini
- Dipartimento di Scienze Chimiche e Farmaceutiche Università degli studi di Ferrara Via Luigi Borsari 46 44121 Ferrara Italy
| |
Collapse
|
6
|
Di Carmine G, Ragno D, De Risi C, Bortolini O, Giovannini PP, Fantin G, Massi A. Synthesis of functionalized imidazolidine-2-thiones via NHC/base-promoted aza-benzoin/aza-acetalization domino reactions. Org Biomol Chem 2017; 15:8788-8801. [DOI: 10.1039/c7ob02259j] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Benzylidene thioureas were generated in situ from α-sulfonylamines and used as novel umpolung acceptors in aza-benzoin/aza-acetalization domino reactions giving 5-hydroxy-imidazolidine-2-thiones.
Collapse
Affiliation(s)
- Graziano Di Carmine
- Dipartimento di Scienze Chimiche e Farmaceutiche
- Università di Ferrara
- I-44121 Ferrara
- Italy
| | - Daniele Ragno
- Dipartimento di Scienze Chimiche e Farmaceutiche
- Università di Ferrara
- I-44121 Ferrara
- Italy
| | - Carmela De Risi
- Dipartimento di Scienze Chimiche e Farmaceutiche
- Università di Ferrara
- I-44121 Ferrara
- Italy
| | - Olga Bortolini
- Dipartimento di Scienze Chimiche e Farmaceutiche
- Università di Ferrara
- I-44121 Ferrara
- Italy
| | - Pier Paolo Giovannini
- Dipartimento di Scienze Chimiche e Farmaceutiche
- Università di Ferrara
- I-44121 Ferrara
- Italy
| | - Giancarlo Fantin
- Dipartimento di Scienze Chimiche e Farmaceutiche
- Università di Ferrara
- I-44121 Ferrara
- Italy
| | - Alessandro Massi
- Dipartimento di Scienze Chimiche e Farmaceutiche
- Università di Ferrara
- I-44121 Ferrara
- Italy
| |
Collapse
|
7
|
Gaggero N, Pandini S. Advances in chemoselective intermolecular cross-benzoin-type condensation reactions. Org Biomol Chem 2017; 15:6867-6887. [DOI: 10.1039/c7ob01662j] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An exhaustive and critical overview of synthetically relevant methods for intermolecular cross-acyloin condensation reactions is reported.
Collapse
Affiliation(s)
- Nicoletta Gaggero
- Dipartimento di Scienze Farmaceutiche
- Sezione di Chimica Generale e Organica “A. Marchesini”
- Università degli Studi di Milano
- 20133-Milano
- Italia
| | - Stefano Pandini
- Dipartimento di Scienze Farmaceutiche
- Sezione di Chimica Generale e Organica “A. Marchesini”
- Università degli Studi di Milano
- 20133-Milano
- Italia
| |
Collapse
|
8
|
Kidwai M, Chauhan R, Bhatnagar D. Nafion-H® catalyzed efficient condensation of indoles with aromatic aldehydes in PEG-water solvent system: A green approach. ARAB J CHEM 2016. [DOI: 10.1016/j.arabjc.2014.05.009] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
|
9
|
Ragno D, Bortolini O, Fantin G, Fogagnolo M, Giovannini PP, Massi A. Nucleophilic and Electrophilic Double Aroylation of Chalcones with Benzils Promoted by the Dimsyl Anion as a Route to All Carbon Tetrasubstituted Olefins. J Org Chem 2015; 80:1937-45. [DOI: 10.1021/jo502582e] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
- Daniele Ragno
- Dipartimento
di Scienze Chimiche
e Farmaceutiche, Università di Ferrara, Via Fossato di Mortara 17-27, I-44121 Ferrara, Italy
| | - Olga Bortolini
- Dipartimento
di Scienze Chimiche
e Farmaceutiche, Università di Ferrara, Via Fossato di Mortara 17-27, I-44121 Ferrara, Italy
| | - Giancarlo Fantin
- Dipartimento
di Scienze Chimiche
e Farmaceutiche, Università di Ferrara, Via Fossato di Mortara 17-27, I-44121 Ferrara, Italy
| | - Marco Fogagnolo
- Dipartimento
di Scienze Chimiche
e Farmaceutiche, Università di Ferrara, Via Fossato di Mortara 17-27, I-44121 Ferrara, Italy
| | - Pier Paolo Giovannini
- Dipartimento
di Scienze Chimiche
e Farmaceutiche, Università di Ferrara, Via Fossato di Mortara 17-27, I-44121 Ferrara, Italy
| | - Alessandro Massi
- Dipartimento
di Scienze Chimiche
e Farmaceutiche, Università di Ferrara, Via Fossato di Mortara 17-27, I-44121 Ferrara, Italy
| |
Collapse
|
10
|
Bazhin DN, Chizhov DL, Röschenthaler GV, Kudyakova YS, Burgart YV, Slepukhin PA, Saloutin VI, Charushin VN. A concise approach to CF3-containing furan-3-ones, (bis)pyrazoles from novel fluorinated building blocks based on 2,3-butanedione. Tetrahedron Lett 2014. [DOI: 10.1016/j.tetlet.2014.08.046] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
|
11
|
Bortolini O, Chiappe C, Fogagnolo M, Giovannini PP, Massi A, Pomelli CS, Ragno D. An insight into the mechanism of the aerobic oxidation of aldehydes catalyzed by N-heterocyclic carbenes. Chem Commun (Camb) 2014; 50:2008-11. [PMID: 24413829 DOI: 10.1039/c3cc48929a] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
N-Heterocyclic carbene catalysis for the aerobic oxidation and esterification of aromatic aldehydes was monitored by ESI-MS (MS/MS) and the key intermediates were intercepted and characterized using the charge-tag strategy.
Collapse
Affiliation(s)
- O Bortolini
- Dipartimento di Scienze Chimiche e Farmaceutiche, Università di Ferrara, Via Fossato di Mortara 17, 44121 Ferrara, Italy.
| | | | | | | | | | | | | |
Collapse
|
12
|
Purohit VB, Karad SC, Patel KH, Raval DK. Cu(N-heterocyclic carbene)chloride: an efficient catalyst for multicomponent click reaction for the synthesis of 1,2,3-triazoles in water at room temperature. RSC Adv 2014. [DOI: 10.1039/c4ra08412h] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
|
13
|
Li Z, Yin J, Wen G, Li T, Shen X. Copper-mediated aerobic oxidative cleavage of α,β-unsaturated ketones to 1,2-diketones. RSC Adv 2014. [DOI: 10.1039/c4ra05307a] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
|
14
|
Sun N, Chen M, Liu Y. Gold-Catalyzed Oxidative Reactions of Propargylic Carbonates Involving 1,2-Carbonate Migration: Stereoselective Synthesis of Functionalized Alkenes. J Org Chem 2014; 79:4055-67. [DOI: 10.1021/jo500573s] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Ning Sun
- State Key Laboratory of Organometallic
Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai 200032, People’s Republic of China
| | - Ming Chen
- State Key Laboratory of Organometallic
Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai 200032, People’s Republic of China
| | - Yuanhong Liu
- State Key Laboratory of Organometallic
Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai 200032, People’s Republic of China
| |
Collapse
|
15
|
Takaki K, Ohno A, Hino M, Shitaoka T, Komeyama K, Yoshida H. N-Heterocyclic carbene-catalyzed double acylation of enones with benzils. Chem Commun (Camb) 2014; 50:12285-8. [DOI: 10.1039/c4cc05436a] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
Thiazolium carbene-catalyzed reaction of aromatic 1,2-diketones with enones in aprotic solvents gave double acylation products in good yields, whereas hydroacylation products were not detected at all.
Collapse
Affiliation(s)
- Ken Takaki
- Department of Applied Chemistry
- Graduate School of Engineering
- Hiroshima University
- Higashi-Hiroshima 739-8527, Japan
| | - Akira Ohno
- Department of Applied Chemistry
- Graduate School of Engineering
- Hiroshima University
- Higashi-Hiroshima 739-8527, Japan
| | - Makoto Hino
- Department of Applied Chemistry
- Graduate School of Engineering
- Hiroshima University
- Higashi-Hiroshima 739-8527, Japan
| | - Takashi Shitaoka
- Department of Applied Chemistry
- Graduate School of Engineering
- Hiroshima University
- Higashi-Hiroshima 739-8527, Japan
| | - Kimihiro Komeyama
- Department of Applied Chemistry
- Graduate School of Engineering
- Hiroshima University
- Higashi-Hiroshima 739-8527, Japan
| | - Hiroto Yoshida
- Department of Applied Chemistry
- Graduate School of Engineering
- Hiroshima University
- Higashi-Hiroshima 739-8527, Japan
| |
Collapse
|
16
|
Bortolini O, Fantin G, Ferretti V, Fogagnolo M, Giovannini PP, Massi A, Pacifico S, Ragno D. Methylsulfinyl (Dimsyl) Anion as Umpolung Catalyst for the Chemoselective Cross-Benzoin Reaction of α-Diketones with Aldehydes. Adv Synth Catal 2013. [DOI: 10.1002/adsc.201300652] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
|
17
|
Kim T, Spiegel DA. The unique reactivity of N-phenacyl-derived thiazolium salts toward α-dicarbonyl compounds. Rejuvenation Res 2013. [PMID: 23186164 DOI: 10.1089/rej.2012.1370] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Advanced glycation end products (AGEs), a heterogeneous mixture of compounds formed by non-enzymatic chemical reactions between sugars and the nucleophilic residues of proteins, have been implicated in the pathogenesis of a number of diseases. ALT-711 is an N-phenacyl-derived thiazolium carbene developed as a therapeutic agent for cardiovascular diseases that is proposed to function through cleaving preformed AGE-protein crosslinks. However, despite promising results in animal models and clinical trials, its mechanism of action still remains controversial. Herein, we report the first systematic investigations into dicarbonyl cleavage by ALT-711. We demonstrate that it is capable of cleaving α-diketones more efficiently and likely via a distinct mechanism compared with other N-heterocyclic carbene precursors. We also show that ALT-711 reacts rapidly with α-keto aldehydes to form cyclic diol products, and it can efficiently scavenge methylglyoxal under physiological conditions to protect Escherichia coli from lethal concentrations of this reactive α-keto aldehyde. This work suggests ALT-711 may be especially suited for α-dicarbonyl clearance in vivo and supports a mode of action similar to that originally proposed. To this end, our findings may provide insights into the development of next-generation crosslink breakers.
Collapse
Affiliation(s)
- Taehan Kim
- Department of Chemistry, Yale University, New Haven, Connecticut 06511, USA
| | | |
Collapse
|
18
|
Stergiou A, Bariotaki A, Kalaitzakis D, Smonou I. Oxone-Mediated Oxidative Cleavage of β-Keto Esters and 1,3-Diketones to α-Keto Esters and 1,2-Diketones in Aqueous Medium. J Org Chem 2013; 78:7268-73. [DOI: 10.1021/jo4009047] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Anastasios Stergiou
- Department of Chemistry, University of Crete, Heraklion 71003, Crete, Greece
| | - Anna Bariotaki
- Department of Chemistry, University of Crete, Heraklion 71003, Crete, Greece
| | | | - Ioulia Smonou
- Department of Chemistry, University of Crete, Heraklion 71003, Crete, Greece
| |
Collapse
|
19
|
Delany EG, Fagan CL, Gundala S, Zeitler K, Connon SJ. Aerobic oxidation of NHC-catalysed aldehyde esterifications with alcohols: benzoin, not the Breslow intermediate, undergoes oxidation. Chem Commun (Camb) 2013; 49:6513-5. [PMID: 23770683 DOI: 10.1039/c3cc42597e] [Citation(s) in RCA: 71] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Benzoin (and neither the Breslow intermediate nor the NHC-aldehyde tetrahedral adduct) has been unambiguously identified as the oxidised species in aerobic NHC-catalysed aldehyde esterifications.
Collapse
Affiliation(s)
- Eoghan G Delany
- Centre for Synthesis and Chemical Biology, Trinity Biomedical Sciences Institute, School of Chemistry, The University of Dublin, Trinity College, Dublin 2, Ireland
| | | | | | | | | |
Collapse
|
20
|
|
21
|
Thai K, Langdon SM, Bilodeau F, Gravel M. Highly Chemo- and Enantioselective Cross-Benzoin Reaction of Aliphatic Aldehydes and α-Ketoesters. Org Lett 2013; 15:2214-7. [DOI: 10.1021/ol400769t] [Citation(s) in RCA: 59] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Karen Thai
- Department of Chemistry, University of Saskatchewan, 110 Science Place, Saskatoon, SK S7N 5C9, Canada, and Research and Development, Boehringer Ingelheim (Canada), Ltd., 2100 rue Cunard, Laval, QC, H7S 2G5, Canada
| | - Steven M. Langdon
- Department of Chemistry, University of Saskatchewan, 110 Science Place, Saskatoon, SK S7N 5C9, Canada, and Research and Development, Boehringer Ingelheim (Canada), Ltd., 2100 rue Cunard, Laval, QC, H7S 2G5, Canada
| | - François Bilodeau
- Department of Chemistry, University of Saskatchewan, 110 Science Place, Saskatoon, SK S7N 5C9, Canada, and Research and Development, Boehringer Ingelheim (Canada), Ltd., 2100 rue Cunard, Laval, QC, H7S 2G5, Canada
| | - Michel Gravel
- Department of Chemistry, University of Saskatchewan, 110 Science Place, Saskatoon, SK S7N 5C9, Canada, and Research and Development, Boehringer Ingelheim (Canada), Ltd., 2100 rue Cunard, Laval, QC, H7S 2G5, Canada
| |
Collapse
|
22
|
Mishra P, Singh S, Ankit P, Fatma S, Singh D, Singh J. Novel Synthesis of 3-Phenyl-chromen-4-ones Using N-Heterocyclic Carbene as Organocatalyst: An Efficient Domino Catalysis Type Approach. B KOREAN CHEM SOC 2013. [DOI: 10.5012/bkcs.2013.34.4.1070] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
|
23
|
Bertolasi V, Bortolini O, Donvito A, Fantin G, Fogagnolo M, Giovannini PP, Massi A, Pacifico S. Unexpected reactivity of diaryl α-diketones with thiazolium carbenes: discovery of a novel multicomponent reaction for the facile synthesis of 1,4-thiazin-3-ones. Org Biomol Chem 2012; 10:6579-86. [DOI: 10.1039/c2ob25928a] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
24
|
Rose CA, Gundala S, Fagan CL, Franz JF, Connon SJ, Zeitler K. NHC-catalysed, chemoselective crossed-acyloin reactions. Chem Sci 2012. [DOI: 10.1039/c2sc00622g] [Citation(s) in RCA: 91] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
|
25
|
Bortolini O, Fantin G, Fogagnolo M, Giovannini PP, Massi A, Pacifico S. Thiazolium-catalyzed intermolecular Stetter reaction of linear and cyclic alkyl α-diketones. Org Biomol Chem 2011; 9:8437-44. [PMID: 22027902 DOI: 10.1039/c1ob06480k] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An efficient method for the N-heterocyclic carbene (NHC)-catalyzed conjugate addition of acetyl anions to various α,β-unsaturated acceptors (Stetter reaction) has been optimized by using 2,3-butandione (biacetyl) as an alternative surrogate of acetaldehyde. The disclosed procedure proved to be compatible with microwave dielectric heating for reaction time reduction and with the use of different linear α-diketones as acyl anion donors (e.g. 3,4-hexanedione for propionyl anion additions). Moreover, the unprecedented umpolung reactivity of cyclic α-diketones in the atom economic nucleophilic acylation of chalcones is herein presented. Mechanistic aspects of the thiazolium-based catalysis involving linear and cyclic α-diketone substrates are also discussed.
Collapse
Affiliation(s)
- Olga Bortolini
- Dipartimento di Chimica, Laboratorio di Chimica Organica, Università di Ferrara, Via L. Borsari 46, I-44121, Ferrara, Italy
| | | | | | | | | | | |
Collapse
|