1
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Eggly AS, Otgontseren N, Roberts CB, Alwali AY, Hennigan HE, Parkinson EI. A Diels-Alder probe for discovery of natural products containing furan moieties. Beilstein J Org Chem 2024; 20:1001-1010. [PMID: 38711585 PMCID: PMC11070956 DOI: 10.3762/bjoc.20.88] [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: 01/01/2024] [Accepted: 04/15/2024] [Indexed: 05/08/2024] Open
Abstract
Natural products (NPs) are fantastic sources of inspiration for novel pharmaceuticals, oftentimes showing unique bioactivity against interesting targets. Specifically, NPs containing furan moieties show activity against a variety of diseases including fungal infections, and cancers. However, it is challenging to discover and isolate these small molecules from cell supernatant. The work described herein showcases the development of a molecular probe that can covalently modify furan moieties via a [4 + 2] Diels-Alder cycloaddition, making them easily identifiable on liquid chromatography-mass spectrometry (LC-MS). The molecular probe, which undergoes this reaction with a variety of furans, was designed with both a UV-tag and a mass tag to enable easy identification. The probe has been tested with a variety of purified furans, including natural products, methylenomycin furan (MMF) hormones, and MMF derivatives. Moreover, the molecular probe has been tested in crude supernatants of various Streptomyces strains and enables identification of MMFs.
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Affiliation(s)
- Alyssa S Eggly
- Department of Chemistry, Purdue University, West Lafayette, Indiana 47906, United States
| | - Namuunzul Otgontseren
- Department of Chemistry, Purdue University, West Lafayette, Indiana 47906, United States
| | - Carson B Roberts
- Department of Chemistry, Purdue University, West Lafayette, Indiana 47906, United States
| | - Amir Y Alwali
- Department of Chemistry, Purdue University, West Lafayette, Indiana 47906, United States
| | - Haylie E Hennigan
- Department of Chemistry, Purdue University, West Lafayette, Indiana 47906, United States
| | - Elizabeth I Parkinson
- Department of Chemistry, Purdue University, West Lafayette, Indiana 47906, United States
- Department of Medicinal Chemistry and Molecular Pharmacology, Purdue University, West Lafayette, Indiana 47906, United States
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2
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Neudorffer A, Deschamps P, Largeron M, Deguin B. An electrochemical access to 2-amino-2,3-dihydro-1,4-benzodioxanes derived from hydroxytyrosol. Org Biomol Chem 2024; 22:1057-1063. [PMID: 38205728 DOI: 10.1039/d3ob01858j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2024]
Abstract
The anodic oxidation of a natural antioxidative catechol, hydroxytyrosol, was developed in an acetonitrile/dimethylsulfoxide (or acetonitrile/water) solvent mixture to produce in a stable way the resulting non-activated o-quinone and generate structural analogues. 2-Amino-2,3-dihydro-1,4-benzodioxane derivatives were obtained as two regioisomers in good to high overall yields (65-90%) and 1 : 3 ratios, through an inverse electron demand Diels-Alder (IEDDA) reaction between the electrogenerated o-quinone and tertiary enamines. The insertion of an electron withdrawing (or electron donating) group on the catechol modified their relative proportions, so that the reaction became regiospecific. With some aliphatic enamines, a competitive 1,6-Michael addition took place, affording 2-hydroxy-1,2,4,5-tetrahydrobenzo[d]oxepine compounds.
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3
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Ou X, Daly H, Chansai S, Beaumont SK, Fan X, Hardacre C. Effect of concentrated NaCl on catalytic wet oxidation (CWO) of short chain carboxylic acids. CATAL COMMUN 2022. [DOI: 10.1016/j.catcom.2021.106395] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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4
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Elshaier YA, Nemr MTM, Al Refaey M, Fadaly WAA, Barakat A. Chemistry of 2-Vinylindoles: Synthesis and Applications. NEW J CHEM 2022. [DOI: 10.1039/d2nj00460g] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
As a class of compounds, 2-vinylindoles have demonstrated a wide range of biological properties. Due to the general interest in these synthons, new divergent protocols of chemical synthesis have been...
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Cioc RC, Smak TJ, Crockatt M, van der Waal JC, Bruijnincx PCA. Furoic acid and derivatives as atypical dienes in Diels-Alder reactions. GREEN CHEMISTRY : AN INTERNATIONAL JOURNAL AND GREEN CHEMISTRY RESOURCE : GC 2021; 23:5503-5510. [PMID: 34381306 PMCID: PMC8327927 DOI: 10.1039/d1gc01535d] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/01/2021] [Accepted: 06/23/2021] [Indexed: 06/13/2023]
Abstract
The furan Diels-Alder (DA) cycloaddition reaction has become an important tool in green chemistry, being central to the sustainable synthesis of many chemical building blocks. The restriction to electron-rich furans is a significant limitation of the scope of suitable dienes, in particular hampering the use of the furans most readily obtained from biomass, furfurals and their oxidized variants, furoic acids. Herein, it is shown that despite their electron-withdrawing substituents, 2-furoic acids and derivatives (esters, amides) are in fact reactive dienes in Diels-Alder couplings with maleimide dienophiles. The reactions benefit from a substantial rate-enhancement when water is used as solvent, and from activation of the 2-furoic acids by conversion to the corresponding carboxylate salts. This approach enables Diels-Alder reactions to be performed under very mild conditions, even with highly unreactive dienes such as 2,5-furandicarboxylic acid. The obtained DA adducts of furoic acids are shown to be versatile synthons in the conversion to various saturated and aromatic carbocyclic products.
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Affiliation(s)
- Răzvan C Cioc
- Organic Chemistry and Catalysis, Debye Institute for Nanomaterials Science, Faculty of Science, Utrecht University Universiteitsweg 99 3584 CG Utrecht The Netherlands
| | - Tom J Smak
- Organic Chemistry and Catalysis, Debye Institute for Nanomaterials Science, Faculty of Science, Utrecht University Universiteitsweg 99 3584 CG Utrecht The Netherlands
| | - Marc Crockatt
- Department of Sustainable Process and Energy Systems, TNO Leeghwaterstraat 44 2628 CA Delft The Netherlands
| | - Jan C van der Waal
- Department of Sustainable Process and Energy Systems, TNO Leeghwaterstraat 44 2628 CA Delft The Netherlands
| | - Pieter C A Bruijnincx
- Organic Chemistry and Catalysis, Debye Institute for Nanomaterials Science, Faculty of Science, Utrecht University Universiteitsweg 99 3584 CG Utrecht The Netherlands
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6
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Shimizu M, Yamamoto T, Shindo H, Mizota I, Zhu Y. 2,3-Dimethoxy-2,3-dimethyl-1,4-dioxane as a useful precursor to 2,3-dimethylene-1,4-dioxane for [4+2] cycloaddition reaction. RSC Adv 2021; 11:7972-7980. [PMID: 35423349 PMCID: PMC8695070 DOI: 10.1039/d1ra00329a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2021] [Accepted: 02/11/2021] [Indexed: 11/24/2022] Open
Abstract
2,3-Dimethoxy-2,3-dimethyl-1,4-dioxane readily prepared from biacetyl serves as a stable precursor to 2,3-dimethylene-1,4-dioxane which undergoes a [4+2] cycloaddition reaction with dienophiles to give functionalized cyclohexene derivatives. The cycloaddition adducts obtained by the present procedure are transformed into potentially useful intermediates for biologically important materials. 2,3-Dimethoxy-2,3-dimethyl-1,4-dioxane serves as a stable precursor to 2,3-dimethylene-1,4-dioxane which undergoes a cycloaddition with dienophiles. The adducts are transformed into useful intermediates for biologically important materials.![]()
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Affiliation(s)
- Makoto Shimizu
- School of Energy Science and Engineering
- Nanjing Tech University
- Nanjing 211816
- China
- Department of Chemistry for Materials
| | - Toshihiro Yamamoto
- Department of Chemistry for Materials
- Graduate School of Engineering
- Mie University
- Tsu
- Japan
| | - Hiroaki Shindo
- Department of Chemistry for Materials
- Graduate School of Engineering
- Mie University
- Tsu
- Japan
| | - Isao Mizota
- Department of Chemistry for Materials
- Graduate School of Engineering
- Mie University
- Tsu
- Japan
| | - Yusong Zhu
- School of Energy Science and Engineering
- Nanjing Tech University
- Nanjing 211816
- China
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7
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Gao D, Liu XY, Xu H, Tan YX, Liao Q, Li QH, Yang X, Lin GQ, Tian P. One-Pot Preparation of 9,10-Dihydrophenanthrenes Initiated by Rhodium(III)-Catalyzed C-H Activation and Relay Diels-Alder Reaction. Org Lett 2020; 22:4300-4305. [PMID: 32452199 DOI: 10.1021/acs.orglett.0c01339] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
An efficient one-pot synthesis of multisubstituted 9,10-dihydrophenanthrenes from easily available 2-arylazaarenes and cyclohexadienone-tethered terminal alkynes (1,6-enynes) has been successfully achieved. This domino reaction proceeded smoothly through Cp*Rh(III)-catalyzed C-H activation, direct protonation of alkenyl-Rh intermediates, intramolecular Diels-Alder reaction, alkene isomerization, subsequent ring-opening aromatization, and acetylation. This strategy was pot-economical and tolerated a wide range of functional groups. Moreover, the potent anticancer activities against HepG2 cells were observed for these artificial 9,10-dihydrophenanthrene derivatives.
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Affiliation(s)
- Dingding Gao
- The Research Center of Chiral Drugs, Innovation Research Institute of Traditional Chinese Medicine, Shanghai University of Traditional Chinese Medicine, 1200 Cailun Road, Shanghai 201203, China
| | - Xing-Yu Liu
- CAS Key Laboratory of Synthetic Chemistry of Natural Substances, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
| | - Hao Xu
- The Research Center of Chiral Drugs, Innovation Research Institute of Traditional Chinese Medicine, Shanghai University of Traditional Chinese Medicine, 1200 Cailun Road, Shanghai 201203, China
| | - Yun-Xuan Tan
- CAS Key Laboratory of Synthetic Chemistry of Natural Substances, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
| | - Qi Liao
- The Research Center of Chiral Drugs, Innovation Research Institute of Traditional Chinese Medicine, Shanghai University of Traditional Chinese Medicine, 1200 Cailun Road, Shanghai 201203, China
| | - Qing-Hua Li
- The Research Center of Chiral Drugs, Innovation Research Institute of Traditional Chinese Medicine, Shanghai University of Traditional Chinese Medicine, 1200 Cailun Road, Shanghai 201203, China
| | - Xiaodi Yang
- The Research Center of Chiral Drugs, Innovation Research Institute of Traditional Chinese Medicine, Shanghai University of Traditional Chinese Medicine, 1200 Cailun Road, Shanghai 201203, China
| | - Guo-Qiang Lin
- The Research Center of Chiral Drugs, Innovation Research Institute of Traditional Chinese Medicine, Shanghai University of Traditional Chinese Medicine, 1200 Cailun Road, Shanghai 201203, China.,CAS Key Laboratory of Synthetic Chemistry of Natural Substances, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
| | - Ping Tian
- The Research Center of Chiral Drugs, Innovation Research Institute of Traditional Chinese Medicine, Shanghai University of Traditional Chinese Medicine, 1200 Cailun Road, Shanghai 201203, China.,CAS Key Laboratory of Synthetic Chemistry of Natural Substances, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China.,Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China
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8
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Shahbakhsh Y, Habibi-Khorassani SM, Shahraki M. Experimental and theoretical approaches on the reaction mechanism and kinetics of dimethyl 2-(6-oxopyridazin-1(6H)-yl)fumarate: Micelle and salt effects. PHOSPHORUS SULFUR 2020. [DOI: 10.1080/10426507.2019.1639702] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- Yaser Shahbakhsh
- Department of Chemistry, Faculty of Science, University of Sistan and Baluchestan , Zahedan , Iran
| | | | - Mehdi Shahraki
- Department of Chemistry, Faculty of Science, University of Sistan and Baluchestan , Zahedan , Iran
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9
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Stereoselectivity of the captodative alkenes 1-acetylvinyl arenecarboxylates in Diels-Alder reactions with cyclic dienes and stereospecific rearrangement of their bicyclo[2.2.n] α-ketol adducts. ARAB J CHEM 2020. [DOI: 10.1016/j.arabjc.2017.08.008] [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] Open
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10
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Swan E, Platts K, Blencowe A. An overview of the cycloaddition chemistry of fulvenes and emerging applications. Beilstein J Org Chem 2019; 15:2113-2132. [PMID: 31579091 PMCID: PMC6753682 DOI: 10.3762/bjoc.15.209] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2019] [Accepted: 08/21/2019] [Indexed: 01/21/2023] Open
Abstract
The unusual electronic properties and unique reactivity of fulvenes have interested researchers for over a century. The propensity to form dipolar structures at relatively low temperatures and to participate as various components in cycloaddition reactions, often highly selectively, makes them ideal for the synthesis of complex polycyclic carbon scaffolds. As a result, fulvene cycloaddition chemistry has been employed extensively for the synthesis of natural products. More recently, fulvene cycloaddition chemistry has also found application to other areas including materials chemistry and dynamic combinatorial chemistry. This highlight article discusses the unusual properties of fulvenes and their varied cycloaddition chemistry, focussing on applications in organic and natural synthesis, dynamic combinatorial chemistry and materials chemistry, including dynamers, hydrogels and charge transfer complexes. Tables providing comprehensive directories of fulvene cycloaddition chemistry are provided, including fulvene intramolecular and intermolecular cycloadditions complete with reactant partners and their resulting cyclic adducts, which provide a useful reference source for synthetic chemists working with fulvenes and complex polycyclic scaffolds.
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Affiliation(s)
- Ellen Swan
- School of Pharmacy and Medical Sciences, The University of South Australia, Adelaide, South Australia 5000, Australia
| | - Kirsten Platts
- School of Pharmacy and Medical Sciences, The University of South Australia, Adelaide, South Australia 5000, Australia
| | - Anton Blencowe
- School of Pharmacy and Medical Sciences, The University of South Australia, Adelaide, South Australia 5000, Australia.,Future Industries Institute, The University of South Australia, Mawson Lakes, South Australia 5095, Australia
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11
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Ono K, Niibe M, Iwasawa N. A K +-promoted Diels-Alder reaction by using a self-assembled macrocyclic boronic ester containing two crown ether moieties. Chem Sci 2019; 10:7627-7632. [PMID: 31588314 PMCID: PMC6761878 DOI: 10.1039/c9sc01597c] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2019] [Accepted: 06/16/2019] [Indexed: 12/22/2022] Open
Abstract
A K+-promoted Diels-Alder reaction of 1,4,9,10-anthradiquinone with various dienes is achieved in the presence of a self-assembled macrocyclic boronic ester [2+2]crown containing two crown ether moieties. The reaction rate is remarkably accelerated (up to 206-fold) compared to that in the absence of the promoter. Furthermore, the reaction proceeds regioselectively to yield an internal adduct. The self-assembly protocol was also demonstrated.
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Affiliation(s)
- Kosuke Ono
- Department of Chemistry , Tokyo Institute of Technology , O-okayama, Meguro-ku , Tokyo 152-8551 , Japan .
| | - Morikazu Niibe
- Department of Chemistry , Tokyo Institute of Technology , O-okayama, Meguro-ku , Tokyo 152-8551 , Japan .
| | - Nobuharu Iwasawa
- Department of Chemistry , Tokyo Institute of Technology , O-okayama, Meguro-ku , Tokyo 152-8551 , Japan .
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12
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Pap LG, Couldridge A, Arulsamy N, Hulley E. Electrostatic polarization of nonpolar substrates: a study of interactions between simple cations and Mo-bound N 2. Dalton Trans 2019; 48:11004-11017. [PMID: 31232399 DOI: 10.1039/c9dt01606f] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Although a great deal of catalytic studies have focused on covalent interactions between substrates and catalyst centers, recognition of the importance of noncovalent and ionic interactions is driving new approaches to catalyst design. Electrostatic interactions with simple cations (those with little covalency, such as alkali metals) play crucial roles in many catalytic processes, but these effects are challenging to study due to their complicated solvation and speciation behaviour. These effects are particularly difficult to study during cation-mediated reactions with weakly-polar or non-polar substrates. Dinitrogen is one of the most nonpolar substrates known to be affected by electrostatic interactions in both heterogeneous and homogeneous reactions but understanding the significance of these effects requires further exploration. To examine these effects systematically, a new multidentate ligand framework bearing pendent crown ethers has been developed and incorporated into a series of Mo(0)-based dinitrogen complexes. Prepared via both reduction and ligand substitution routes, the strength and impact of cation-N2 interactions have been studied experimentally (IR spectroscopy) and computationally. Although the smallest cation (Li+) has the largest impact on the ground-state heterobimetallic activation of N2, solvation interactions are highly competitive and result in low Li+-(N2)Mo binding affinities. Thus, although smaller cations can have the largest electronic impact on substrates, these interactions are also the least persistent.
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Affiliation(s)
- Levente G Pap
- Department of Chemistry, University of Wyoming, Dept. 3838, 1000 E. University Avenue, Laramie, Wyoming 82071, USA.
| | - Adam Couldridge
- Department of Chemistry, University of Wyoming, Dept. 3838, 1000 E. University Avenue, Laramie, Wyoming 82071, USA.
| | - Navamoney Arulsamy
- Department of Chemistry, University of Wyoming, Dept. 3838, 1000 E. University Avenue, Laramie, Wyoming 82071, USA.
| | - Elliott Hulley
- Department of Chemistry, University of Wyoming, Dept. 3838, 1000 E. University Avenue, Laramie, Wyoming 82071, USA.
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13
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Reid JESJ, Aquino PHG, Walker AJ, Karadakov PB, Shimizu S. Statistical Thermodynamics Unveils How Ions Influence an Aqueous Diels‐Alder Reaction. Chemphyschem 2019; 20:1538-1544. [DOI: 10.1002/cphc.201900024] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2019] [Revised: 03/15/2019] [Indexed: 11/06/2022]
Affiliation(s)
- Joshua E. S. J. Reid
- York Structural Biology Laboratory Department of ChemistryUniversity of York Heslington York YO10 5DD United Kingdom
- Bioniqs Ltd., BioCity Nottingham Pennyfoot Street Nottingham NG1 1GF United Kingdom
| | - Pedro H. G. Aquino
- York Structural Biology Laboratory Department of ChemistryUniversity of York Heslington York YO10 5DD United Kingdom
| | - Adam J. Walker
- Bioniqs Ltd., BioCity Nottingham Pennyfoot Street Nottingham NG1 1GF United Kingdom
| | - Peter B. Karadakov
- Department of ChemistryUniversity of York Heslington York YO10 5DD United Kingdom
| | - Seishi Shimizu
- York Structural Biology Laboratory Department of ChemistryUniversity of York Heslington York YO10 5DD United Kingdom
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14
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Graziano G. On the opposite effect of guanidinium chloride and guanidinium sulphate on the kinetics of the Diels-Alder reaction. J Mol Liq 2019. [DOI: 10.1016/j.molliq.2018.11.054] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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15
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Dandia A, Bansal S, Sharma R, Parewa V. Water-Triggered Metal-Free Synthesis of PyranopyrazolesviaOne-Pot Oxidation/Michael Addition/Cyclization/Dehydration Sequence. ChemistrySelect 2018. [DOI: 10.1002/slct.201801691] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Anshu Dandia
- Centre of Advanced Studies; Department of Chemistry; University of Rajasthan, Jaipur; India
| | - Sarika Bansal
- Centre of Advanced Studies; Department of Chemistry; University of Rajasthan, Jaipur; India
| | - Ruchi Sharma
- Centre of Advanced Studies; Department of Chemistry; University of Rajasthan, Jaipur; India
| | - Vijay Parewa
- Centre of Advanced Studies; Department of Chemistry; University of Rajasthan, Jaipur; India
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16
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Rohling R, Tranca IC, Hensen EJM, Pidko EA. Electronic Structure Analysis of the Diels-Alder Cycloaddition Catalyzed by Alkali-Exchanged Faujasites. THE JOURNAL OF PHYSICAL CHEMISTRY. C, NANOMATERIALS AND INTERFACES 2018; 122:14733-14743. [PMID: 30018699 PMCID: PMC6038092 DOI: 10.1021/acs.jpcc.8b04409] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/09/2018] [Revised: 06/07/2018] [Indexed: 05/22/2023]
Abstract
The Diels-Alder cycloaddition (DAC) reaction is a commonly employed reaction for the formation of C-C bonds. DAC catalysis can be achieved by using Lewis acids and via reactant confinement in aqueous nanocages. Low-silica alkali-exchanged faujasite catalysts combine these two factors in one material. They can be used in the tandem DAC/dehydration reaction of biomass-derived 2,5-dimethylfuran (DMF) with ethylene toward p-xylene, in which the DAC reaction step initiates the overall reaction cycle. In this work, we performed periodic density functional theory (DFT) calculations on the DAC reaction between DMF and C2H4 in low-silica alkali(M)-exchanged faujasites (MY; Si/Al = 2.4; M = Li+, Na+, K+, Rb+, Cs+). The aim was to investigate how confinement of reactants in MY catalysts changed their electronic structure and the DAC-reactivity trend among the evaluated MY zeolites. The conventional high-silica alkali-exchanged isolated site model (MFAU; Si/Al = 47) served as a reference. The results show that confinement leads to initial-state (IS) destabilization and transition-state (TS) stabilization. Among the tested MY, most significant IS destabilization is found in RbY. Only antibonding orbital interactions between the reactants/reactive complex and cations were found, indicating that TS stabilization arises from ionic interactions. Additionally, in RbY the geometry of the transition state is geometrically most similar to that of the initial and final state. RbY also exhibits an optimal combination of the confinement-effects, resulting in having the lowest computed DAC-activation energy. The overall effect is a DAC-reactivity trend inversion in MY as compared to the trend found in MFAU where the activation energy correlates with the Lewis acidity of the exchangeable cations.
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Affiliation(s)
- Roderigh
Y. Rohling
- Inorganic
Materials Chemistry group, Department of Chemical Engineering, and Energy Technology,
Department of Mechanical Engineering, Eindhoven
University of Technology, P.O. Box 513, 5600 MB, Eindhoven, The Netherlands
| | - Ionut C. Tranca
- Inorganic
Materials Chemistry group, Department of Chemical Engineering, and Energy Technology,
Department of Mechanical Engineering, Eindhoven
University of Technology, P.O. Box 513, 5600 MB, Eindhoven, The Netherlands
| | - Emiel J. M. Hensen
- Inorganic
Materials Chemistry group, Department of Chemical Engineering, and Energy Technology,
Department of Mechanical Engineering, Eindhoven
University of Technology, P.O. Box 513, 5600 MB, Eindhoven, The Netherlands
| | - Evgeny A. Pidko
- Inorganic
Materials Chemistry group, Department of Chemical Engineering, and Energy Technology,
Department of Mechanical Engineering, Eindhoven
University of Technology, P.O. Box 513, 5600 MB, Eindhoven, The Netherlands
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17
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Synthetic approach to seco-tetracenomycin natural products saccharothrixone A–C. Tetrahedron Lett 2018. [DOI: 10.1016/j.tetlet.2018.04.031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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18
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Dandia A, Khan S, Sharma R, Parihar S, Parewa V. “On Water” Sustainable Synthesis of 1,5-Disubstituted Tetrazoles via Ugi-Azide Reaction through Perturbation of Kosmotropes Using Nacl. ChemistrySelect 2017. [DOI: 10.1002/slct.201702234] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Affiliation(s)
- Anshu Dandia
- Centre of Advanced Studies, Department of Chemistry; University of Rajasthan; Jaipur India
| | - Shahnawaz Khan
- Centre of Advanced Studies, Department of Chemistry; University of Rajasthan; Jaipur India
| | - Ruchi Sharma
- Centre of Advanced Studies, Department of Chemistry; University of Rajasthan; Jaipur India
| | - Sonam Parihar
- Centre of Advanced Studies, Department of Chemistry; University of Rajasthan; Jaipur India
| | - Vijay Parewa
- Centre of Advanced Studies, Department of Chemistry; University of Rajasthan; Jaipur India
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19
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Tripathy MK, Chandrakumar KRS. The exemplary role of nanoconfinement in the proton transfer from acids to ammonia. Phys Chem Chem Phys 2017; 19:19869-19872. [PMID: 28726905 DOI: 10.1039/c7cp03945j] [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]
Abstract
Proton transfer processes from mineral acids to bases (HX, where X = F, Cl, Br and I to ammonia) are normally feasible in solution and they cannot spontaneously occur in the gas phase. We demonstrate that this process can be feasible under nanoconfinement without using any solvent molecules. More interestingly, in contrast to the general observation, halide ions except fluoride behave like protons under high confinement, leading to the formation of NH3X instead of NH4 ions. The triggering transformation of hydrogen bonded to the proton transferred complex under nanoconfinement is explained based on the thermodynamic quantity, static pressure.
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Affiliation(s)
- Manoj K Tripathy
- Research Reactor Services Division, Bhabha Atomic Research Centre, Mumbai 400085, India
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20
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Zaikin PA, Dyan OT, Fadeev DS, Gatilov YV, Borodkin GI. 1,1-Difluoronaphthalene-2(1 H )-ones in Diels-Alder reaction. J Fluor Chem 2017. [DOI: 10.1016/j.jfluchem.2017.04.008] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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21
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The dehydro Diels-Alder (DDA) reaction based approach to isofuranonaphthalenone, nodulones A-C and xestolactone A. Tetrahedron 2017. [DOI: 10.1016/j.tet.2016.11.015] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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22
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Chinta BS, Baire B. On the Distribution of Linear versus Angular Naphthalenes in Aromatic Tetradehydro-Diels-Alder Reactions - Effect of Linker Structure and Steric Bulk. European J Org Chem 2017. [DOI: 10.1002/ejoc.201700588] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Bhavani Shankar Chinta
- Department of Chemistry; Indian Institute of Technology Madras; 600036 Chennai Tamilnadu India
| | - Beeraiah Baire
- Department of Chemistry; Indian Institute of Technology Madras; 600036 Chennai Tamilnadu India
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23
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Chinta BS, Baire B. First Synthesis of the [5-5-6-6] Tetracyclic Framework of Spiropreussione B. European J Org Chem 2017. [DOI: 10.1002/ejoc.201700464] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
| | - Beeraiah Baire
- Department of Chemistry; Indian Institute of Technology Madras; 600036 Chennai India
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24
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Silva VLM, Santos LMNBF, Silva AMS. Ohmic Heating: An Emerging Concept in Organic Synthesis. Chemistry 2017; 23:7853-7865. [PMID: 28294435 DOI: 10.1002/chem.201700307] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2017] [Indexed: 11/09/2022]
Abstract
The ohmic heating also known as direct Joule heating, is an advanced thermal processing method, mainly used in the food industry to rapidly increase the temperature for either cooking or sterilization purposes. Its use in organic synthesis, in the heating of chemical reactors, is an emerging method that shows great potential, the development of which has started recently. This Concept article focuses on the use of ohmic heating as a new tool for organic synthesis. It presents the fundamentals of ohmic heating and makes a qualitative and quantitative comparison with other common heating methods. A brief description of the ohmic reactor prototype in operation is presented as well as recent examples of its use in organic synthesis at laboratory scale, thus showing the current state of the research. The advantages and limitations of this heating method, as well as its main current applications are also discussed. Finally, the prospects and potential implications of ohmic heating in future research in chemical synthesis are proposed.
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Affiliation(s)
- Vera L M Silva
- Department of Chemistry & QOPNA, University of Aveiro, 3810-193, Aveiro, Portugal
| | - Luis M N B F Santos
- Centro de Investigação em Química (CIQUP), Departamento de Química e Bioquímica, Faculdade de Ciências da Universidade do Porto, Rua Campo Alegre 687, 4169-007, Porto, Portugal
| | - Artur M S Silva
- Department of Chemistry & QOPNA, University of Aveiro, 3810-193, Aveiro, Portugal
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25
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Appiani E, Ossola R, Latch DE, Erickson PR, McNeill K. Aqueous singlet oxygen reaction kinetics of furfuryl alcohol: effect of temperature, pH, and salt content. ENVIRONMENTAL SCIENCE. PROCESSES & IMPACTS 2017; 19:507-516. [PMID: 28244514 DOI: 10.1039/c6em00646a] [Citation(s) in RCA: 93] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
The rate constant for the reaction between furfuryl alcohol (FFA) and singlet oxygen (1O2) in aqueous solution was measured as a function of temperature, pH and salt content employing both steady-state photolysis (β value determination) and time-resolved singlet oxygen phosphorescence methods. The latter provided more precise and reproducible data. The reaction rate constant, krxn,FFA, had a relatively small temperature dependence, no pH dependence and showed a small increase in the presence of high salt concentrations (+19% with 1 M NaCl). A critical review of the available literature suggested that the widely used value of 1.2 × 108 M-1 s-1 is likely overestimated. Therefore, we recommend the use of 1.00 × 108 M-1 s-1 for reactions performed in low ionic strength aqueous solutions (freshwater) at 22 °C. Furthermore, corrections are provided that should be applied when working at higher or lower temperatures, and/or at high salt concentrations (seawater).
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Affiliation(s)
- Elena Appiani
- Institute of Biogeochemistry and Pollutant Dynamics (IBP), Department of Environmental Systems Science, ETH Zurich, 8092 Zurich, Switzerland.
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26
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Sánchez-Márquez J. Introducing new reactivity descriptors: “Bond reactivity indices.” Comparison of the new definitions and atomic reactivity indices. J Chem Phys 2016; 145:194105. [DOI: 10.1063/1.4967293] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
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27
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Dai P, Zhang C, Welborn M, Shepherd J, Zhu T, Van Voorhis T, Pentelute BL. Salt Effect Accelerates Site-Selective Cysteine Bioconjugation. ACS CENTRAL SCIENCE 2016; 2:637-646. [PMID: 27725962 PMCID: PMC5043432 DOI: 10.1021/acscentsci.6b00180] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/25/2016] [Indexed: 05/16/2023]
Abstract
Highly efficient and selective chemical reactions are desired. For small molecule chemistry, the reaction rate can be varied by changing the concentration, temperature, and solvent used. In contrast for large biomolecules, the reaction rate is difficult to modify by adjusting these variables because stringent biocompatible reaction conditions are required. Here we show that adding salts can change the rate constant over 4 orders of magnitude for an arylation bioconjugation reaction between a cysteine residue within a four-residue sequence (π-clamp) and a perfluoroaryl electrophile. Biocompatible ammonium sulfate significantly enhances the reaction rate without influencing the site-specificity of π-clamp mediated arylation, enabling the fast synthesis of two site-specific antibody-drug conjugates that selectively kill HER2-positive breast cancer cells. Computational and structure-reactivity studies indicate that salts may tune the reaction rate through modulating the interactions between the π-clamp hydrophobic side chains and the electrophile. On the basis of this understanding, the salt effect is extended to other bioconjugation chemistry, and a new regioselective alkylation reaction at π-clamp cysteine is developed.
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28
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Zaghouani M, Kunz C, Guédon L, Blanchard F, Nay B. First Total Synthesis, Structure Revision, and Natural History of the Smallest Cytochalasin: (+)-Periconiasin G. Chemistry 2016; 22:15257-15260. [PMID: 27556729 DOI: 10.1002/chem.201603734] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2016] [Indexed: 12/29/2022]
Abstract
The total synthesis of the smallest cytochalasin isolated so far, periconiasin G, which bears a seven-membered ring in lieu of the usual macrocycle, has been performed from both enantiomers of citronellal, relying on an intramolecular Diels-Alder reaction in favor of the natural endo stereochemistry. We show that, among the four synthesized stereoisomers, including the exo isomers, the one matching the NMR data of the natural product was not that assigned in the original report, imposing structure revision. The natural product, previously isolated from a plant-mutualistic fungus, was biologically investigated taking into account its natural history, showing significant effects against the phytopathogenic fungus Botrytis cinerea and thus opening new opportunities in combating this pest.
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Affiliation(s)
- Mehdi Zaghouani
- Muséum National d'Histoire Naturelle, CNRS (UMR 7245), Sorbonne Universités, 57 rue Cuvier (CP 54), 75005, Paris, France
| | - Caroline Kunz
- Muséum National d'Histoire Naturelle, CNRS (UMR 7245), Sorbonne Universités, 57 rue Cuvier (CP 54), 75005, Paris, France.,Sorbonne Universités, Université Pierre et Marie Curie, Paris 6, UFR 927, Paris, France
| | - Laura Guédon
- Muséum National d'Histoire Naturelle, CNRS (UMR 7245), Sorbonne Universités, 57 rue Cuvier (CP 54), 75005, Paris, France
| | - Florent Blanchard
- Institut de Chimie des Substances Naturelles (ICSN-CNRS), 1 Avenue de la Terrasse, 91198, Gif-sur-Yvette Cedex, France
| | - Bastien Nay
- Muséum National d'Histoire Naturelle, CNRS (UMR 7245), Sorbonne Universités, 57 rue Cuvier (CP 54), 75005, Paris, France.
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29
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Boruah PR, Bora SJ, Saikia PJ, Sarma D. Organic/inorganic salting-in/salting-out agents as promoters of Pd-catalysed ligand free synthesis of biaryls in water. J Organomet Chem 2016. [DOI: 10.1016/j.jorganchem.2015.12.025] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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30
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Eyckens DJ, Champion ME, Fox BL, Yoganantharajah P, Gibert Y, Welton T, Henderson LC. Solvate Ionic Liquids as Reaction Media for Electrocyclic Transformations. European J Org Chem 2016. [DOI: 10.1002/ejoc.201501614] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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31
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Yamamoto K, Nagae H, Tsurugi H, Mashima K. Mechanistic understanding of alkyne cyclotrimerization on mononuclear and dinuclear scaffolds: [4 + 2] cycloaddition of the third alkyne onto metallacyclopentadienes and dimetallacyclopentadienes. Dalton Trans 2016; 45:17072-17081. [DOI: 10.1039/c6dt03389j] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We summarized mechanistic investigations for transition metal-catalyzed alkyne cyclotrimerization in terms of mononuclear and dinuclear complexes.
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Affiliation(s)
- Keishi Yamamoto
- Department of Chemistry
- Graduate School of Engineering Science
- Osaka University
- Toyonaka
- Japan
| | - Haruki Nagae
- Department of Chemistry
- Graduate School of Engineering Science
- Osaka University
- Toyonaka
- Japan
| | - Hayato Tsurugi
- Department of Chemistry
- Graduate School of Engineering Science
- Osaka University
- Toyonaka
- Japan
| | - Kazushi Mashima
- Department of Chemistry
- Graduate School of Engineering Science
- Osaka University
- Toyonaka
- Japan
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32
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Xue Z, Zhao X, Wang J, Mu T. Transfer hydrodehalogenation of aryl halides accelerated by a saturated sodium acetate aqueous solution. RSC Adv 2016. [DOI: 10.1039/c6ra24559e] [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 saturated sodium acetate aqueous solution could be applied as an efficient and environmentally-friendly reaction medium to accelerate transfer hydrodehalogenation of various aryl halides.
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Affiliation(s)
- Zhimin Xue
- Beijing Key Laboratory of Lignocellulosic Chemistry
- College of Materials Science and Technology
- Beijing Forestry University
- Beijing 100083
- China
| | - Xinhui Zhao
- Department of Chemistry
- Renmin University of China
- Beijing 100872
- China
| | - Jinfang Wang
- Department of Chemistry
- Renmin University of China
- Beijing 100872
- China
| | - Tiancheng Mu
- Department of Chemistry
- Renmin University of China
- Beijing 100872
- China
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33
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Li W, Zhou L, Zhang J. Recent Progress in Dehydro(genative) Diels-Alder Reaction. Chemistry 2015; 22:1558-71. [DOI: 10.1002/chem.201503571] [Citation(s) in RCA: 63] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2015] [Indexed: 11/08/2022]
Affiliation(s)
- Wenbo Li
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes; School of Chemistry and Molecular Engineering; East China Normal University; 3663 N. Zhongshan Road Shanghai 200062 P. R. China
| | - Liejin Zhou
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes; School of Chemistry and Molecular Engineering; East China Normal University; 3663 N. Zhongshan Road Shanghai 200062 P. R. China
| | - Junliang Zhang
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes; School of Chemistry and Molecular Engineering; East China Normal University; 3663 N. Zhongshan Road Shanghai 200062 P. R. China
- State Key Laboratory of Organometallic Chemistry; Shanghai Institute of Organic Chemistry; CAS; 345 Lingling Road Shanghai 200032 China
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34
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de Souza MAF, Ventura E, do Monte SA, Riveros JM, Longo RL. Revisiting the concept of the (a)synchronicity of diels-alder reactions based on the dynamics of quasiclassical trajectories. J Comput Chem 2015; 37:701-11. [DOI: 10.1002/jcc.24245] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2015] [Revised: 10/16/2015] [Accepted: 10/17/2015] [Indexed: 11/08/2022]
Affiliation(s)
- Miguel A. F. de Souza
- Instituto De Química, Universidade Federal Do Rio Grande Do Norte; Natal Rio Grande do Norte 59072-970 Brazil
- Departamento De Química; CCEN, Universidade Federal Da Paraíba; João Pessoa Paraíba 58.059-900 Brazil
- Departamento De Química Fundamental; Universidade Federal De Pernambuco; Recife Pernambuco 50.740-560 Brazil
| | - Elizete Ventura
- Departamento De Química; CCEN, Universidade Federal Da Paraíba; João Pessoa Paraíba 58.059-900 Brazil
| | - Silmar A. do Monte
- Departamento De Química; CCEN, Universidade Federal Da Paraíba; João Pessoa Paraíba 58.059-900 Brazil
| | - José M. Riveros
- Instituto De Química, Universidade De São Paulo; Caixa Postal 26077 São Paulo 05599-970 Brazil
- Centro De Ciências Naturais E Humanas, Universidade Federal Do ABC; Rua Santa Adelia 166 Santo André, São Paulo 09210-170 Brazil
| | - Ricardo L. Longo
- Departamento De Química Fundamental; Universidade Federal De Pernambuco; Recife Pernambuco 50.740-560 Brazil
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35
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Nagare AS, Manna A, Sonawane PD, Kumar A. The water-promoted Diels-Alder reaction in quaternary ammonium salts. J PHYS ORG CHEM 2015. [DOI: 10.1002/poc.3469] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Amit S. Nagare
- Physical and Materials Chemistry Division; CSIR-National Chemical Laboratory; Pune India
| | - Arpan Manna
- Physical and Materials Chemistry Division; CSIR-National Chemical Laboratory; Pune India
| | | | - Anil Kumar
- Physical and Materials Chemistry Division; CSIR-National Chemical Laboratory; Pune India
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36
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Ion-selective interactions of biologically relevant inorganic ions with alanine zwitterion: a 3D-RISM study. Amino Acids 2015; 47:1015-23. [DOI: 10.1007/s00726-015-1930-4] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2014] [Accepted: 01/25/2015] [Indexed: 11/27/2022]
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37
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Fang Z, Liu Y, Barry BD, Liao P, Bi X. Formation of Benzo[f]-1-indanone Frameworks by Regulable Intramolecular Annulations of gem-Dialkylthio Trienynes. Org Lett 2015; 17:782-5. [DOI: 10.1021/ol5034332] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Zhongxue Fang
- Department
of Chemistry, Northeast Normal University, Changchun 130024, China
| | - Ying Liu
- Department
of Chemistry, Northeast Normal University, Changchun 130024, China
| | - Badru-Deen Barry
- Department
of Chemistry, Northeast Normal University, Changchun 130024, China
| | - Peiqiu Liao
- Department
of Chemistry, Northeast Normal University, Changchun 130024, China
| | - Xihe Bi
- Department
of Chemistry, Northeast Normal University, Changchun 130024, China
- State
Key Laboratory of Elemento-Organic Chemistry, Nankai University, Tianjin 300071, China
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38
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Gogoi A, Dewan A, Bora U. A highly efficient copper and ligand free protocol for the room temperature Sonogashira reaction. RSC Adv 2015. [DOI: 10.1039/c4ra09630d] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
A mild and efficient catalytic system based on PdCl2 and Na2SO4 has been developed for the Sonogashira reaction of aryl iodides at room temperature.
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Affiliation(s)
- Ankur Gogoi
- Department of Chemistry
- Dibrugarh University
- Dibrugarh-786004
- India
| | - Anindita Dewan
- Department of Chemistry
- Dibrugarh University
- Dibrugarh-786004
- India
| | - Utpal Bora
- Department of Chemistry
- Dibrugarh University
- Dibrugarh-786004
- India
- Department of Chemical Sciences
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39
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Cardoso MFDC, Gomes ATPC, Silva VLM, Silva AMS, Neves MGPMS, da Silva FDC, Ferreira VF, Cavaleiro JAS. Ohmic heating assisted synthesis of coumarinyl porphyrin derivatives. RSC Adv 2015. [DOI: 10.1039/c5ra11156k] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Efficient access to coumarinyl porphyrin derivatives bearing pyrano[3,2-c]coumarin motifs is disclosed. Conditions used ohmic heating and water, in Knoevenagel and hetero-Diels–Alder reactions between a beta-vinylporphyrin and α-methylenechromanes.
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Affiliation(s)
- M. F. do C. Cardoso
- Department of Chemistry and QOPNA
- University of Aveiro
- 3810-193 Aveiro
- Portugal
- Universidade Federal Fluminense
| | - A. T. P. C. Gomes
- Department of Chemistry and QOPNA
- University of Aveiro
- 3810-193 Aveiro
- Portugal
| | - V. L. M. Silva
- Department of Chemistry and QOPNA
- University of Aveiro
- 3810-193 Aveiro
- Portugal
| | - A. M. S. Silva
- Department of Chemistry and QOPNA
- University of Aveiro
- 3810-193 Aveiro
- Portugal
| | | | - F. de C. da Silva
- Universidade Federal Fluminense
- Instituto de Química
- Departamento de Química Orgânica
- Niterói
- Brazil
| | - V. F. Ferreira
- Universidade Federal Fluminense
- Instituto de Química
- Departamento de Química Orgânica
- Niterói
- Brazil
| | - J. A. S. Cavaleiro
- Department of Chemistry and QOPNA
- University of Aveiro
- 3810-193 Aveiro
- Portugal
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40
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Fedotova MV, Dmitrieva OA. Characterization of selective binding of biologically relevant inorganic ions with the proline zwitterion by 3D-RISM theory. NEW J CHEM 2015. [DOI: 10.1039/c5nj01559f] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The features of selective binding of several biologically relevant mono- and divalent inorganic ions with the proline zwitterion were studied over a wide range of electrolyte concentrations.
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Affiliation(s)
- Marina V. Fedotova
- G.A. Krestov Institute of Solution Chemistry
- Russian Academy of Sciences
- Ivanovo 153045
- Russia
| | - Olga A. Dmitrieva
- G.A. Krestov Institute of Solution Chemistry
- Russian Academy of Sciences
- Ivanovo 153045
- Russia
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41
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Awino JK, Zhao Y. Water-Soluble Molecularly Imprinted Nanoparticles (MINPs) with Tailored, Functionalized, Modifiable Binding Pockets. Chemistry 2014; 21:655-61. [DOI: 10.1002/chem.201404919] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2014] [Indexed: 11/10/2022]
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42
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Awino JK, Zhao Y. Water-Soluble Molecularly Imprinted Nanoparticles (MINPs) with Tailored, Functionalized, Modifiable Binding Pockets. Chemistry 2014; 21:3831-3831. [PMID: 25376391 DOI: 10.1002/chem.404919] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2014] [Indexed: 11/10/2022]
Abstract
Construction of receptors with binding sites of specific size, shape, and functional groups is important to both chemistry and biology. Covalent imprinting of a photocleavable template within surface-core doubly cross-linked micelles yielded carboxylic acid-containing hydrophobic pockets within the water-soluble molecularly imprinted nanoparticles. The functionalized binding pockets were characterized by their binding of amine- and acid-functionalized guests under different pH values. The nanoparticles, on average, contained one binding site per particle and displayed highly selective binding among structural analogues. The binding sites could be modified further by covalent chemistry to modulate their binding properties.
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Affiliation(s)
- Joseph K Awino
- Department of Chemistry, Iowa State University, Ames, IA 50011-3111 (USA), Fax: (+1) 515-294-0105
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43
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Manna A, Kumar A. Invoking Pairwise Interactions in Water-Promoted Diels-Alder Reactions by using Ionic Liquids as Cosolvents. Chemphyschem 2014; 15:3067-77. [DOI: 10.1002/cphc.201402338] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2014] [Indexed: 11/09/2022]
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44
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Boruah PR, Koiri MJ, Bora U, Sarma D. A new recyclable/reusable ionic liquid/LiCl system for Suzuki–Miyaura cross coupling reactions. Tetrahedron Lett 2014. [DOI: 10.1016/j.tetlet.2014.02.126] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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45
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Paria S, Reiser O. Visible Light Photoredox Catalyzed Cascade Cyclizations of α-Bromochalcones or α-Bromocinnamates with Heteroarenes. Adv Synth Catal 2014. [DOI: 10.1002/adsc.201301069] [Citation(s) in RCA: 57] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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46
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Sogani N, Sinha P, Bansal RK. Hetero-Diels–Alder reaction of aromatic aldehydes catalyzed by titanium tetrachloride: computational and experimental results. Tetrahedron 2014. [DOI: 10.1016/j.tet.2013.11.077] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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47
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48
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Kwak JM, Moon JS, Choi JI, Murugan RN, Park WK, Gong JY, Lee HY, Koh HY. Construction of a Library of Arylpiperazinyl 1,2,3-Triazole Derivatives as Ligands for Dopamine D3/D4Receptor. B KOREAN CHEM SOC 2013. [DOI: 10.5012/bkcs.2013.34.11.3467] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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49
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Sun IW, Wu SY, Su CH, Shu YL, Wu PL. Diels-Alder Reaction in Air- and Moisture-Stable Zinc-Containing Ionic Liquids. J CHIN CHEM SOC-TAIP 2013. [DOI: 10.1002/jccs.200400057] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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50
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Homopyrrole and homofuran as masked 1,5-dipoles in metal-free (5+2) cycloadditions with dienophiles: a DFT study. Tetrahedron 2013. [DOI: 10.1016/j.tet.2013.05.123] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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