1
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Kosińska A, Jamroz D, Rybarczyk-Pirek AJ, Wojtulewski S, Palusiak M, Zakrzewski J, Rudolf B. Amine-catalyzed substitution in CpFe(CO) 2I by phosphine and bisphosphine ligands. Dalton Trans 2024; 53:9732-9740. [PMID: 38775685 DOI: 10.1039/d4dt00416g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/11/2024]
Abstract
We have found that amines significantly accelerate iodide substitution in CpFe(CO)2I (1) (Cp = η5-cyclopentadienyl) with phosphines and allow the synthesis of new complexes that are not available through reactions carried out without an amine. The reaction of equimolar amounts of 1 and triphenylphosphine in toluene containing DIPA afforded [CpFe(CO)2PPh3]+I- within 5 min at room temperature in 72% yield (90% after 24 h). DIPA and pyrrolidine gave the highest yields of the tested amines. We performed a similar reaction using model bisphosphines 1,3-bis(diphenylphosphino)ethane (dppe) and 1,1'-bis(diphenylphosphino)ferrocene (dppf). The products depended on the reagent ratio and bore the CpFe(CO)2 moiety coordinated to one or two phosphine phosphorus atoms. Chelates [CpFe(CO)(dppe)]+I- (4) and [Cp2Fe2(CO)4(dppe)]2+2I- (5) were formed in 72% and 98% yield, respectively. We also performed the DIPA-catalyzed reaction of 1 with triethyl phosphite and obtained the product of an Michaelis-Arbuzov-like rearrangement, CpFe(CO)2[P(O)(OCH2CH3)2] (11). All complexes were characterized with spectroscopic analysis by NMR, FT-IR, and ESI-MS, and by XRD for three complexes. To clarify the reaction mechanism, we performed theoretical calculations of the intermolecular interactions between 1 and amine molecules. We propose two possible reaction mechanisms to explain the formation of products.
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Affiliation(s)
- Aneta Kosińska
- University of Lodz, Faculty of Chemistry, Department of Organic Chemistry, Tamka 12, 91-403 Lodz, Poland.
| | - Daria Jamroz
- University of Lodz, Faculty of Chemistry, Department of Organic Chemistry, Tamka 12, 91-403 Lodz, Poland.
| | - Agnieszka J Rybarczyk-Pirek
- University of Lodz, Faculty of Chemistry, Department of Physical Chemistry, Pomorska 163/165, 90-236 Lodz, Poland
| | - Sławomir Wojtulewski
- University of Bialystok, Faculty of Chemistry, Department of Structural Chemistry, Ciołkowskiego 1K, 15-245 Bialystok, Poland
| | - Marcin Palusiak
- University of Lodz, Faculty of Chemistry, Department of Physical Chemistry, Pomorska 163/165, 90-236 Lodz, Poland
| | - Janusz Zakrzewski
- University of Lodz, Faculty of Chemistry, Department of Organic Chemistry, Tamka 12, 91-403 Lodz, Poland.
| | - Bogna Rudolf
- University of Lodz, Faculty of Chemistry, Department of Organic Chemistry, Tamka 12, 91-403 Lodz, Poland.
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2
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Chakraborty N, Mitra AK. The versatility of DABCO as a reagent in organic synthesis: a review. Org Biomol Chem 2023; 21:6830-6880. [PMID: 37605948 DOI: 10.1039/d3ob00921a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/23/2023]
Abstract
DABCO (1,4-diazabicyclo[2.2.2]octane) has garnered a lot of interest for numerous organic transformations since it is a low-cost, environmentally friendly, reactive, manageable, non-toxic and basic organocatalyst with a high degree of selectivity. Moreover, DABCO functions as a nucleophile as well as a base in a variety of processes for the synthesis of a wide array of molecules, including carbocyclic and heterocyclic compounds. Protection and deprotection of functional groups and the formation of carbon-carbon bonds are also catalyzed by DABCO. The reagent also finds applications in the synthesis of functional groups like isothiocyanate, amide and ester. Application of DABCO in cycloaddition, coupling, aromatic nucleophilic substitution, ring-opening, oxidation and rearrangement reactions is also noteworthy. This is a state of the art review that has encompassed a variety of processes for the synthesis of organic frameworks using DABCO.
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Affiliation(s)
- Nitisha Chakraborty
- Department of Chemistry and Chemical Biology, Indian Institute of Technology (ISM) Dhanbad, Jharkhand, Pin: 826004, India
| | - Amrit Krishna Mitra
- Department of Chemistry, Government General Degree College, Singur, Singur, Hooghly, West Bengal, Pin: 712409, India.
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3
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Imaizumi T, Akaiwa M, Abe T, Nigawara T, Koike T, Satake Y, Watanabe K, Kaneko O, Amano Y, Mori K, Yamanaka Y, Nagashima T, Shimazaki M, Kuramoto K. Discovery and biological evaluation of 1-{2,7-diazaspiro[3.5]nonan-2-yl}prop-2-en-1-one derivatives as covalent inhibitors of KRAS G12C with favorable metabolic stability and anti-tumor activity. Bioorg Med Chem 2022; 71:116949. [DOI: 10.1016/j.bmc.2022.116949] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2022] [Revised: 07/26/2022] [Accepted: 07/26/2022] [Indexed: 11/02/2022]
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4
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Valvi A, Tiwari S. Solvent‐Controlled Regioselectivity in Nucleophilic Substitution Reactions of 1‐X‐2,4‐Difluorobenzenes with Morpholine Using Deep Eutectic Solvents. ChemistrySelect 2021. [DOI: 10.1002/slct.202002806] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
- Arun Valvi
- Department of Chemistry Karmaveer Bhaurao Patil College Vashi, Navi Mumbai 400703 India
| | - Shraeddha Tiwari
- Department of Chemistry Institute of Chemical Technology Mumbai 400019 India
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5
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Jangid DK. DABCO as a Base and an Organocatalyst in Organic Synthesis: A Review. CURRENT GREEN CHEMISTRY 2020. [DOI: 10.2174/2213346107666191227101538] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
One of the organocatalysts 1,4-diazabicyclo[2.2.2]octane (DABCO) is an excellent solid
catalyst in a number of reactions. It is also a good nucleophile and a base in numerous reactions for the
synthesis of heterocycles. DABCO catalyzes many reactions like cycloaddition reactions, coupling reactions,
Baylis-Hillman reaction, Henry reaction, ring opening reactions, etc. One more advanced feature
of these reactions is that they proceed through environmental friendly pathway. DABCO has
more advantages than other organic catalysts because it is an inexpensive, non.toxic base, an ecofriendly
and a highly reactive catalyst for building of organic frameworks, which produce the desired
products in excellent yields with high selectivity. Many catalytic applications of DABCO have been
reported for the synthesis of an organic framework which has been discussed in this review.
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Affiliation(s)
- Dinesh K. Jangid
- Department of Chemistry, Faculty of Science, University of Rajasthan, JLN Marg, Jaipur, Rajasthan, India
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6
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Ojaghi Aghbash K, Noroozi Pesyan N, Batmani H. Fe
3
O
4
@silica‐MCM‐41@DABCO: A novel magnetically reusable nanostructured catalyst for clean
in situ
synthesis of substituted 2‐aminodihydropyrano[3,2‐
b
]pyran‐3‐cyano. Appl Organomet Chem 2019. [DOI: 10.1002/aoc.5227] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
| | - Nader Noroozi Pesyan
- Department of Organic Chemistry, Faculty of ChemistryUrmia University 57159 Urmia Iran
| | - Hana Batmani
- Department of Organic Chemistry, Faculty of ChemistryUrmia University 57159 Urmia Iran
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7
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Brittain WDG, Cobb SL. Tetrafluoropyridyl (TFP): a general phenol protecting group readily cleaved under mild conditions. Org Biomol Chem 2019; 17:2110-2115. [PMID: 30623945 PMCID: PMC6390695 DOI: 10.1039/c8ob02899k] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Herein we introduce tetrafluoropyridyl (TFP) as a new general protecting group for phenols. The TFP protecting group is readily cleaved under mild conditions.
Phenols are extremely valuable building blocks in the areas of pharmaceuticals, natural products, materials and catalysts. In order to carry out modifications on phenols, the phenolic oxygen is routinely protected to prevent unwanted side reactions. Presently many of the protecting groups available can require harsh conditions, specialist equipment, expensive or air/moisture-sensitive reagents to install and remove. Here we introduce the use of the tetrafluoropyridyl (TFP) group as a general protecting group for phenols. TFP can be installed in one step with no sensitivity to water or air, and it is stable under a range of commonly employed reaction conditions including acid and base. The TFP protecting group is readily cleaved under mild conditions with quantitative conversion to the parent phenol, observed in many cases in less than 1 hour.
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8
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Madácsi R, Gyuris M, Wölfling J, Puskás LG, Kanizsai I. Highly regioselective 4-hydroxy-1-methylpiperidine mediated aromatic nucleophilic substitution on a perfluorinated phthalimide core. J Fluor Chem 2018. [DOI: 10.1016/j.jfluchem.2018.05.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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9
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Mai HD, Lee I, Yoo H. Controllable Synthesis of a Highly Ordered Polymeric Structure Assembled from Cobalt-Cluster-based Racemic Supramolecules. Chem Asian J 2018; 13:1915-1919. [PMID: 29888427 DOI: 10.1002/asia.201800837] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2018] [Indexed: 11/10/2022]
Abstract
Metallosupramolecule-based polymeric platforms with high degrees of hierarchy and tailorable functionalities are of great interests because of their unique morphologies and potential applications. Herein, the controllable synthesis of a highly-ordered polymeric structure, {[M,P-Co8 (PDA)6 (HIP)3 (DMF)5 (H2 O)]3 -[Co(DMF)(H2 O)2 ]} (1) (PDA=2,6-pyridinedicarboxylate, HIP=5-hydroxyisophthalate, DMF=dimethylformamide) with unique topology is reported. The solid-state structure of 1 reveals that it is alternately and periodically assembled from racemic supramolecular monomers to form a zigzag-shaped polymeric strand. Discrete racemic supramolecules (2) with topologies similar to those of monomeric species of 1 are also controllably synthesized in a separate reaction. Formation of intermolecular hydrogen bonds between supramolecules associated with hydroxyl groups of HIPs are critical for the unique solid-state packing geometries of 1 and 2.
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Affiliation(s)
- Hien Duy Mai
- Department of Chemistry, Hallym University, Chuncheon, Gangwon-do, 24252, Republic of Korea
| | - Inme Lee
- Department of Chemistry, Hallym University, Chuncheon, Gangwon-do, 24252, Republic of Korea
| | - Hyojong Yoo
- Department of Chemistry, Hallym University, Chuncheon, Gangwon-do, 24252, Republic of Korea
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10
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Naumiec GR, Cai L, Lu S, Pike VW. Quinuclidine and DABCO Enhance the Radiofluorinations of 5-Substituted 2-Halopyridines. European J Org Chem 2017; 2017:6593-6603. [PMID: 29497348 PMCID: PMC5826632 DOI: 10.1002/ejoc.201700970] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2017] [Indexed: 11/06/2022]
Abstract
Positron emission tomography (PET) is an important molecular imaging technique for medical diagnosis, biomedical research and drug development. PET tracers for molecular imaging contain β+-emitting radionuclides, such as carbon-11 (t1/2 = 20.4 min) or fluorine-18 (t1/2 = 109.8 min). The [18F]2-fluoro-pyridyl moiety features in a few prominent PET radiotracers, not least because this moiety is usually resistant to unwanted radiodefluorination in vivo. Various methods have been developed for labeling these radiotracers from cyclotron-produced no-carrier-added [18F]fluoride ion, mainly based on substitution of a leaving group, such as halide (Cl or Br), or preferably a better leaving group, such as nitro or trimethylammonium. However, precursors with a good leaving group are sometimes more challenging or lengthy to prepare. Methods for enhancing the reactivity of more readily accessible 2-halopyridyl precursors are therefore desirable, especially for early radiotracer screening programs that may require the quick labeling of several homologous radiotracer candidates. In this work, we explored a wide range of additives for beneficial effect on nucleophilic substitution by [18F]fluoride ion in 5-subsituted 2-halopyridines (halo = Cl or Br). The nucleophilic cyclic tertiary amines, quinuclidine and DABCO, proved effective for increasing yields to practically useful levels (> 15%). Quinuclidine and DABCO likely promote radiofluorination through reversible formation of quaternary ammonium intermediates.
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Affiliation(s)
- Gregory R. Naumiec
- Molecular Imaging Branch, National Institute of Mental Health, National Institutes of Health, Building 10, Rm B3C346, 10 Center Drive, Bethesda, MD 20892-1003, USA
| | - Lisheng Cai
- Molecular Imaging Branch, National Institute of Mental Health, National Institutes of Health, Building 10, Rm B3C346, 10 Center Drive, Bethesda, MD 20892-1003, USA
| | - Shuiyu Lu
- Molecular Imaging Branch, National Institute of Mental Health, National Institutes of Health, Building 10, Rm B3C346, 10 Center Drive, Bethesda, MD 20892-1003, USA
| | - Victor W. Pike
- Molecular Imaging Branch, National Institute of Mental Health, National Institutes of Health, Building 10, Rm B3C346, 10 Center Drive, Bethesda, MD 20892-1003, USA
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11
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Magnetic hydroxyapatite-immobilized 1,4-diazabicyclo [2.2.2] octane as a highly efficient and eco-friendly nanocatalyst for the promotion of nucleophilic substitution reactions of benzyl halides under green conditions. REACTION KINETICS MECHANISMS AND CATALYSIS 2017. [DOI: 10.1007/s11144-017-1276-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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12
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Bugaenko DI, Yurovskaya MA, Karchava AV. Quaternary N-(2-Pyridyl)-DABCO Salts: One-Pot in Situ Formation from Pyridine-N-oxides and Reactions with Nucleophiles: A Mild and Selective Route to Substituted N-(2-Pyridyl)-N′-ethylpiperazines. J Org Chem 2017; 82:2136-2149. [DOI: 10.1021/acs.joc.6b02952] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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13
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Subbareddy CV, Sumathi S. One-pot three-component protocol for the synthesis of indolyl-4H-chromene-3-carboxamides as antioxidant and antibacterial agents. NEW J CHEM 2017. [DOI: 10.1039/c7nj00980a] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
A series of newly synthesized 4-(1H-indol-3-yl)-2-methyl-N-phenyl-4H-chromene-3-carboxamide derivatives catalyzed by 1,4-Diazabicyclo [2.2.2]octane (DABCO) (30 mol%) at room temperature.
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14
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Duan S, Place D, Perfect HH, Ide ND, Maloney M, Sutherland K, Price Wiglesworth KE, Wang K, Olivier M, Kong F, Leeman K, Blunt J, Draper J, McAuliffe M, O’Sullivan M, Lynch D. Palbociclib Commercial Manufacturing Process Development. Part I: Control of Regioselectivity in a Grignard-Mediated SNAr Coupling. Org Process Res Dev 2016. [DOI: 10.1021/acs.oprd.6b00070] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Shengquan Duan
- Chemical
Research and Development and Analytical Research and Development, Pfizer Worldwide Research and Development, Eastern Point Road, Groton, Connecticut 06340, United States
| | - David Place
- Chemical
Research and Development and Analytical Research and Development, Pfizer Worldwide Research and Development, Eastern Point Road, Groton, Connecticut 06340, United States
| | - Hahdi H. Perfect
- Chemical
Research and Development and Analytical Research and Development, Pfizer Worldwide Research and Development, Eastern Point Road, Groton, Connecticut 06340, United States
| | - Nathan D. Ide
- Chemical
Research and Development and Analytical Research and Development, Pfizer Worldwide Research and Development, Eastern Point Road, Groton, Connecticut 06340, United States
| | - Mark Maloney
- Chemical
Research and Development and Analytical Research and Development, Pfizer Worldwide Research and Development, Eastern Point Road, Groton, Connecticut 06340, United States
| | - Karen Sutherland
- Chemical
Research and Development and Analytical Research and Development, Pfizer Worldwide Research and Development, Eastern Point Road, Groton, Connecticut 06340, United States
| | - Kristin E. Price Wiglesworth
- Chemical
Research and Development and Analytical Research and Development, Pfizer Worldwide Research and Development, Eastern Point Road, Groton, Connecticut 06340, United States
| | - Ke Wang
- Chemical
Research and Development and Analytical Research and Development, Pfizer Worldwide Research and Development, Eastern Point Road, Groton, Connecticut 06340, United States
| | - Mark Olivier
- Chemical
Research and Development and Analytical Research and Development, Pfizer Worldwide Research and Development, Eastern Point Road, Groton, Connecticut 06340, United States
| | - Fangming Kong
- Chemical
Research and Development and Analytical Research and Development, Pfizer Worldwide Research and Development, Eastern Point Road, Groton, Connecticut 06340, United States
| | - Kyle Leeman
- Chemical
Research and Development and Analytical Research and Development, Pfizer Worldwide Research and Development, Eastern Point Road, Groton, Connecticut 06340, United States
| | - Jon Blunt
- Chemical
Research and Development, Pfizer Process Development Facility, Ramsgate Road, Sandwich, Kent, CT13 9NJ, United Kingdom
| | - John Draper
- Chemical
Research and Development, Pfizer Process Development Facility, Ramsgate Road, Sandwich, Kent, CT13 9NJ, United Kingdom
| | | | | | - Denis Lynch
- Pfizer Global Supply, Ringaskiddy, Co. Cork, Ireland
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15
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A. A. Arafa W, M. Gomha S, G. Badrey M. DABCO-Catalyzed Green Synthesis of Thiazole and 1,3-Thiazine Derivatives Linked to Benzofuran. HETEROCYCLES 2016. [DOI: 10.3987/com-16-13470] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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16
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n-Propyl-4-aza-1-azoniabicyclo[2.2.2]octane chloride-SBA-15 (SBA-DABCO) as basic mesoporous catalyst for the synthesis of 1,4-dihydropyridine hetrocyclic compounds. CATAL COMMUN 2015. [DOI: 10.1016/j.catcom.2015.06.019] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
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17
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Chandrasekhara Rao L, Satish Kumar N, Jagadeesh Babu N, Meshram HM. Reinvestigation of the reaction between 1,3-diketones and 2-hydroxyarylaldehydes: a short, atom-economical entry to tetrahydroxanthenones. RSC Adv 2015. [DOI: 10.1039/c5ra10675c] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
A short and facile access to novel functionalized tetrahydroxanthenonesviaa DABCO-promoted tandem Knoevenagel condensation/hemiketalisation process from easily accessible substrates in a high yield.
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Affiliation(s)
- L. Chandrasekhara Rao
- Medicinal Chemistry and Pharmacology Division
- CSIR-Indian Institute of Chemical Technology
- Hyderabad–500 007
- India
| | - N. Satish Kumar
- Medicinal Chemistry and Pharmacology Division
- CSIR-Indian Institute of Chemical Technology
- Hyderabad–500 007
- India
| | - N. Jagadeesh Babu
- Laboratory of X-ray Crystallography
- CSIR-Indian Institute of Chemical Technology
- Hyderabad–500 007
- India
| | - H. M. Meshram
- Medicinal Chemistry and Pharmacology Division
- CSIR-Indian Institute of Chemical Technology
- Hyderabad–500 007
- India
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18
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Diazabicyclo[2.2.2]octane stabilized on Fe3O4 as catalysts for synthesis of coumarin under solvent-free conditions. JOURNAL OF THE IRANIAN CHEMICAL SOCIETY 2013. [DOI: 10.1007/s13738-013-0270-0] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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19
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Bach P, Marczynke M, Giordanetto F. Effects of the Pyridine 3-Substituent on Regioselectivity in the Nucleophilic Aromatic Substitution Reaction of 3-Substituted 2,6-Dichloropyridines with 1-Methylpiperazine Studied by a Chemical Design Strategy. European J Org Chem 2012. [DOI: 10.1002/ejoc.201200978] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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20
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Affiliation(s)
- Adam J. Rosenberg
- Department of Chemistry, 1-014 Center for Science and Technology, Syracuse University, Syracuse, New York 13244, United States
| | - Daniel A. Clark
- Department of Chemistry, 1-014 Center for Science and Technology, Syracuse University, Syracuse, New York 13244, United States
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21
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Wen LR, Shi YJ, Liu GY, Li M. Modulating the reactivity of functionalized N,S-ketene acetal in MCR: selective synthesis of tetrahydropyridines and thiochromeno[2,3-b]pyridines via DABCO-catalyzed tandem annulation. J Org Chem 2012; 77:4252-60. [PMID: 22512644 DOI: 10.1021/jo202665q] [Citation(s) in RCA: 63] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
An efficient and straightforward three-component synthetic protocol was developed to synthesize 1,2,3,4-tetrahydropyridine derivatives or thiochromeno[2,3-b]pyridine derivatives from β-aroylthioacetanilides or β-(2-haloaroyl)thioacetanilides, aldehydes, and aroyl acetonitriles via DABCO-catalyzed tandem [3 + 2 + 1] annulation and S(N)Ar reaction. This synthetic approach has the prominent features of high chemo-, stereo- (or enantio-), and unusual regioselectivity. In the domino processes, at least seven reactive sites were involved, and up to three covalent bonds and one functionalized pyridine ring were generated. This facile and efficient reaction is a quite general for the preparation of tetrahydropyridine derivatives or thiochromeno[2,3-b]pyridine derivatives.
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Affiliation(s)
- Li-Rong Wen
- State Key Laboratory Base of Eco-Chemical Engineering, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, 53 Zhengzhou Road, Qingdao 266042, P. R. China.
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22
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Chéron N, El Kaïm L, Grimaud L, Fleurat-Lessard P. Evidences for the Key Role of Hydrogen Bonds in Nucleophilic Aromatic Substitution Reactions. Chemistry 2011; 17:14929-34. [DOI: 10.1002/chem.201102463] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2011] [Indexed: 11/05/2022]
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23
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Khandare RP, Vaze KR, Bhat SV. Synthesis and Antitumor Activity of New Retinobenzoic Acids. Chem Biodivers 2011; 8:841-9. [DOI: 10.1002/cbdv.201000116] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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24
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Li M, Zhou ZM, Wen LR, Qiu ZX. Chemistry of Heterocyclic Ketene Aminals: Construction of Imidazo(pyrido)[1,2-a]pyridines and Imidazo(pyrido)[3,2,1-ij][1,8]naphthyridines via DABCO-Catalyzed Tandem Annulations. J Org Chem 2011; 76:3054-63. [DOI: 10.1021/jo102167g] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Ming Li
- State Key Laboratory Base of Eco-Chemical Engineering, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, P. R. China
| | - Zhong-Min Zhou
- State Key Laboratory Base of Eco-Chemical Engineering, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, P. R. China
| | - Li-Rong Wen
- State Key Laboratory Base of Eco-Chemical Engineering, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, P. R. China
| | - Zhong-Xuan Qiu
- State Key Laboratory Base of Eco-Chemical Engineering, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, P. R. China
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25
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Chan LC, Cox BG, Jones IC, Tomasi S. Base-dependent selectivity of an SNAr reaction. J PHYS ORG CHEM 2010. [DOI: 10.1002/poc.1820] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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26
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Ma M, Li C, Li X, Wen K, Liu YA. Efficient synthesis of 6-aryl-2-chloronicotinic acids via pd catalyzed regioselective suzuki coupling of 2,6-dichloronicotinic acid. J Heterocycl Chem 2008. [DOI: 10.1002/jhet.5570450646] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Goljer I, Molinari A, He Y, Nogle L, Sun W, Campbell B, McConnell O. Unexpected rearrangement of enantiomerically pure 3-aminoquinuclidine as a simple way of preparing diastereomeric octahydropyrrolo[2,3-c]pyridine derivatives. Chirality 2008; 21:681-91. [PMID: 18792960 DOI: 10.1002/chir.20663] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Reaction of (S)- or (R)-3-aminoquinuclidine with 2-chloropyrimidine or 2-bromopyrimidine led to an unexpected formation of both cis- and trans-octahydropyrrolo [2,3]pyridine derivatives. A single-step synthesis of two of the four stereoisomers of these octahydropyrrolo[2,3]pyridine derivatives provides a convenient way of generating stereochemically defined isomers. Optimization of reaction conditions was carried out by (1)H NMR monitoring. The relative and absolute stereochemistry of all four stereoisomers was determined by a combination of (1)H, (13)C, and (15)N NMR spectroscopy and vibrational circular dichroism spectroscopy.
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Affiliation(s)
- Igor Goljer
- Discovery Analytical Chemistry, Chemical and Screening Sciences, Wyeth Research, Collegeville, Pennsylvania 19426, USA.
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