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Khan A, Sarwar MG, Ali S. Reactivity and Stability of (Hetero)Benzylic Alkenes via the Wittig Olefination Reaction. Molecules 2024; 29:501. [PMID: 38276579 PMCID: PMC10819551 DOI: 10.3390/molecules29020501] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2023] [Revised: 01/07/2024] [Accepted: 01/16/2024] [Indexed: 01/27/2024] Open
Abstract
Wittig olefination at hetero-benzylic positions for electron-deficient and electron-rich heterocycles has been studied. The electronic effects of some commonly used protective groups associated with the N-heterocycles were also investigated for alkenes obtained in the context of the widely employed Wittig olefination reaction. It was observed that hetero-benzylic positions of the pyridine, thiophene and furan derivatives were stable after Wittig olefination. Similarly, electron-withdrawing groups (EWGs) attached to N-heterocycles (indole and pyrrole derivatives) directly enhanced the stability of the benzylic position during and after Wittig olefination, resulting in the formation of stable alkenes. Conversely, electron-donating group (EDG)-associated N-heterocycles boosted the reactivity of benzylic alkene, leading to lower yields or decomposition of the olefination products.
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Affiliation(s)
- Ajmir Khan
- School of Packaging, Michigan State University, 448 Wilson Road, East Lansing, MI 48824, USA
| | | | - Sher Ali
- Department of Food Engineering, Faculty of Animal Science and Food Engineering (FZEA), University of São Paulo (USP), Pirassununga 13635-900, SP, Brazil;
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2
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Liang Y, Huang H, Huang N, Liao L, Zhao X. Catalytic Enantioselective Construction of Chiral γ-Azido Nitriles through Nitrile Group-Promoted Electrophilic Reaction of Alkenes. Org Lett 2023; 25:6757-6762. [PMID: 37656917 DOI: 10.1021/acs.orglett.3c02650] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/03/2023]
Abstract
An efficient approach for the construction of enantioenriched γ-azido nitriles through the chiral sulfide-catalyzed asymmetric electrophilic thioazidation of allylic nitriles is disclosed. A wide range of electron-deficient and -rich aryl, heterocyclic aryl, and alkyl substituents are suitable on the substrates of allylic nitriles. The regio-, enantio-, and diastereoselectivities of the reactions are excellent. As versatile platform molecules, the obtained chiral γ-azido nitriles can be easily converted into high-value-added chiral molecules that are not easily accessed by other methods. Control experiments revealed that the allylic nitrile group is important for control of the reactivity and enantioselectivity of the reaction leading to a broad substrate scope.
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Affiliation(s)
- Yaoyu Liang
- Institute of Organic Chemistry & MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou, Guangdong 510006, P. R. China
| | - Hongtai Huang
- Institute of Organic Chemistry & MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou, Guangdong 510006, P. R. China
| | - Nan Huang
- Institute of Organic Chemistry & MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou, Guangdong 510006, P. R. China
| | - Lihao Liao
- Institute of Organic Chemistry & MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou, Guangdong 510006, P. R. China
| | - Xiaodan Zhao
- Institute of Organic Chemistry & MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou, Guangdong 510006, P. R. China
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3
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Yamashiro T, Tokushige K, Abe T. One-Pot Synthesis of Core Structure of Shewanelline C Using an Azidoindoline. J Org Chem 2023; 88:3992-3997. [PMID: 36888895 DOI: 10.1021/acs.joc.3c00013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/10/2023]
Abstract
The unprecedented synthesis of the indolines bearing N3-quinazolin-2,4-dione moiety using an AZIN is reported. The concise synthesis features the tandem Staudinger/chemo-selective aza-Wittig/cyclization sequence of AZINs with isatoic anhydride by a one-pot protocol.
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Affiliation(s)
- Toshiki Yamashiro
- Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, 1-1-1 Tsushima-naka, Kita-ku, Okayama 7008530, Japan
| | - Keisuke Tokushige
- Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, 1-1-1 Tsushima-naka, Kita-ku, Okayama 7008530, Japan
| | - Takumi Abe
- Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, 1-1-1 Tsushima-naka, Kita-ku, Okayama 7008530, Japan
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4
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Fang L, Chu M, Yan C, Liu Y, Zhao Z. Palbociclib and Michael-acceptor hybrid compounds as CDK4/6 covalent inhibitors: improved potency, broad anticancer spectrum and overcoming drug resistance. Bioorg Med Chem 2023; 84:117263. [PMID: 37011445 DOI: 10.1016/j.bmc.2023.117263] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2023] [Revised: 03/15/2023] [Accepted: 03/24/2023] [Indexed: 03/28/2023]
Abstract
To search for potent CDK4/6 covalent inhibitors, total 14 compounds have been designed and synthesized by connecting different Michael-acceptor to the piperazine moiety of palbociclib. All the compounds displayed good antiproliferative activity against human hepatoma cell (HepG2), non-small cell lung cancer (A549), and breast cancer (MDA-MB-231 and MCF-7) cell lines. In particular, compound A4 showed the highest inhibitory activity to MDA-MB-231 and MCF-7 cells with IC50 values of 0.51 μM and 0.48 μM, respectively. More importantly, A4 also showed strong inhibition against MDA-MB-231/palbociclib cells, indicating that A4 could effectively avoid the resistance of palbociclib. In the enzyme test, A4 showed selective inhibitory activity against CDK4/6, with the IC50 value of 18 nM and 13 nM, respectively. It was also found that A4 could efficiently induce apoptosis and arrest the cell cycle at G0/G1 phase. Moreover, A4 could significantly decrease the phosphorylation level of CDK4 and CDK6. HPLC and molecular modeling studies suggested that A4 could form a covalent bond with the target protein.
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Affiliation(s)
- Lei Fang
- Jiangsu Province Hi-Tech Key Laboratory for Bio-medical Research, School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, China.
| | - Mengqi Chu
- Jiangsu Province Hi-Tech Key Laboratory for Bio-medical Research, School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, China
| | - Changhang Yan
- Jiangsu Province Hi-Tech Key Laboratory for Bio-medical Research, School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, China
| | - Yilin Liu
- Jiangsu Province Hi-Tech Key Laboratory for Bio-medical Research, School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, China
| | - Zimeng Zhao
- Jiangsu Province Hi-Tech Key Laboratory for Bio-medical Research, School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, China
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5
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Saliyeva LM, Dyachenko IV, Danyliuk IY, Vovk MV. Di-, tetra-, and perhydropyrrolo[1,2- a]imidazoles: The Methods of Synthesis and Some Aspects of Application. Chem Heterocycl Compd (N Y) 2023; 58:661-680. [PMID: 36687505 PMCID: PMC9838525 DOI: 10.1007/s10593-023-03142-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2022] [Accepted: 08/03/2022] [Indexed: 01/13/2023]
Abstract
The review summarizes and systematizes the literature data on the synthesis and some aspects of application of pyrrolo[1,2-a]imidazoles. Synthetic approaches are grouped according to the degree of saturation of the product pyrroloimidazole ring. The bibliography of the review includes 110 sources over the last 15 years.
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Affiliation(s)
- Lesya M. Saliyeva
- Lesya Ukrainka Volyn National University, 13 Voli Ave, Lutsk, 43025 Ukraine
| | - Irina V. Dyachenko
- Institut de pharmacologie de Sherbrooke, Université de Sherbrooke, 3001 12e Nord Ave., Sherbrooke, Quebec J1H 5N4 Canada
| | - Ivanna Yu. Danyliuk
- Institute of Organic Chemistry, National Academy of Sciences of Ukraine, 5 Akademika Kukhara St, Kyiv, 02094 Ukraine
| | - Mykhailo V. Vovk
- Institute of Organic Chemistry, National Academy of Sciences of Ukraine, 5 Akademika Kukhara St, Kyiv, 02094 Ukraine
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6
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Liao C, Ruan H, Jiang J, Luo L, Hu Y. Synthesis and Activity Evaluation of 3-Aryl-2-imino-benzo[ e][1,3]-oxazin-4-ol Derivatives. CHINESE J ORG CHEM 2023. [DOI: 10.6023/cjoc202206048] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/03/2023]
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7
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Xian C, He J, He Y, Nie J, Yuan Z, Sun J, Martens WN, Qin J, Zhu HY, Zhang Z. High Nitrile Yields of Aerobic Ammoxidation of Alcohols Achieved by Generating •O 2- and Br • Radicals over Iron-Modified TiO 2 Photocatalysts. J Am Chem Soc 2022; 144:23321-23331. [PMID: 36516341 DOI: 10.1021/jacs.2c07061] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Catalytic ammoxidation of alcohols into nitriles is an essential reaction in organic synthesis. While highly desirable, conducting the synthesis at room temperature is challenging, using NH3 as the nitrogen source, O2 as the oxidant, and a catalyst without noble metals. Herein, we report robust photocatalysts consisting of Fe(III)-modified titanium dioxide (Fe/TiO2) for ammoxidation reactions at room temperature utilizing oxygen at atmospheric pressure, NH3 as the nitrogen source, and NH4Br as an additive. To the best of our knowledge, this is the first example of catalytic ammoxidation of alcohols over a photocatalyst using such cheap and benign materials. Various (hetero) aromatic nitriles were synthesized at high yields, and aliphatic alcohols could also be transformed into corresponding nitriles at considerable yields. The modification of TiO2 with Fe(III) facilitates the formation of active •O2- radicals and increases the adsorption of NH3 and amino intermediates on the catalyst, accelerating the ammoxidation to yield nitriles. The additive NH4Br impressively improves the catalytic efficiency via the formation of bromine radicals (Br•) from Br-, which works synergistically with •O2- to capture H• from Cα-H, which is present in benzyl alcohol and the intermediate aldimine (RCH═NH), to generate the active carbon-centered radicals. Further, the generation of Br• from the Br- additive consumes the photogenerated holes and OH• radicals to prevent over-oxidation, significantly improving the selectivity toward nitriles. This amalgamation of function and synergy of the Fe(III)-doped TiO2 and NH4Br reveals new opportunities for developing semiconductor-based photocatalytic systems for fine chemical synthesis.
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Affiliation(s)
- Chensheng Xian
- School of Chemistry and Materials Science, South-Central Minzu University, Wuhan 430074, P. R. China
| | - Jie He
- School of Chemistry and Materials Science, South-Central Minzu University, Wuhan 430074, P. R. China
| | - Yurong He
- School of Chemistry and Materials Science, South-Central Minzu University, Wuhan 430074, P. R. China
| | - Jiabao Nie
- School of Chemistry and Materials Science, South-Central Minzu University, Wuhan 430074, P. R. China
| | - Ziliang Yuan
- School of Chemistry and Materials Science, South-Central Minzu University, Wuhan 430074, P. R. China
| | - Jie Sun
- School of Chemistry and Materials Science, South-Central Minzu University, Wuhan 430074, P. R. China
| | - Wayde N Martens
- School of Chemistry and Physics, Queensland University of Technology, Brisbane, Queensland 4001, Australia
| | - Jingzhong Qin
- School of Chemistry and Materials Science, South-Central Minzu University, Wuhan 430074, P. R. China
| | - Huai-Yong Zhu
- School of Chemistry and Physics, Queensland University of Technology, Brisbane, Queensland 4001, Australia
| | - Zehui Zhang
- School of Chemistry and Materials Science, South-Central Minzu University, Wuhan 430074, P. R. China
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Synthesis and Characterization of Multiple Functionalized Cyclohexanone Using Diels–Alder Reaction of α-Nitrocinnamate. REACTIONS 2022. [DOI: 10.3390/reactions3040041] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/05/2022] Open
Abstract
A systematic study of the Diels–Alder reaction of α-nitrocinnamate was performed. The reaction of p-substituted α-nitrocinnamate with 2,3-dimethyl-1,3-butadienes smoothly proceeded regardless of the p-substituent, which was either an electron-donating or -withdrawing group. A control reaction revealed that α-nitrocinnamate isomerized during the reaction. Danishefsly’s diene (1-methoxy-3-trimethylsiloxy-1,3-butadiene) facilitated cycloaddition under mild conditions to afford a cycloadduct without the alternation of the diastereomeric ratio. Moreover, the desilylation of the cycloadduct furnished multiple functionalized cyclohexanones.
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9
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Andreev I, Boichenko M, Ratmanova N, Ivanova O, Levina I, Khrustalev V, Sedov I, Trushkov I. 4‐(Dimethylamino)pyridinium Azide in Protic Ionic Liquid Media as a Stable Equivalent of Hydrazoic Acid. Adv Synth Catal 2022. [DOI: 10.1002/adsc.202200486] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Ivan Andreev
- Dmitry Rogachev National Medical Research Center of Pediatric Hematology Oncology and Immunology RUSSIAN FEDERATION
| | - Maksim Boichenko
- Lomonosov Moscow State University Department of Chemistry RUSSIAN FEDERATION
| | - Nina Ratmanova
- Dmitry Rogachev National Medical Research Center of Pediatric Hematology Oncology and Immunology RUSSIAN FEDERATION
| | | | - Irina Levina
- FSBSI Institute of Biochemical Physics named after N M Emanuel of the Russian Academy of Sciences RUSSIAN FEDERATION
| | | | - Igor Sedov
- Kazan Federal University RUSSIAN FEDERATION
| | - Igor Trushkov
- N.D. Zelinsky Institute of Organic Chemistry RUSSIAN FEDERATION
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10
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Xiao JI, Wu Z, Chen Z, Zhao P. Tetraethylenepentamine Functionalized Phenolic Resin as Highly Active Acid-Base Bifunctional Catalyst for Knoevenagel Condensation Reaction. CHINESE J ORG CHEM 2022. [DOI: 10.6023/cjoc202109031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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11
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Tukhtaev HB, Bezzubov SI, Tarasenko EA, Melnikov MY, Ivanov KL, Budynina EM. Time‐Dependent Diastereodivergent Michael Addition Enabled by Phosphazenes Acting as Catalysts and Reactants. Adv Synth Catal 2021. [DOI: 10.1002/adsc.202100570] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Hamidulla B. Tukhtaev
- Lomonosov Moscow State University Department of Chemistry Leninskie gory 1–3 Moscow 119991 Russia
| | - Stanislav I. Bezzubov
- Kurnakov Institute of General and Inorganic Chemistry Russian Academy of Sciences Leninskiy pr. 31 Moscow 119991 Russia
| | - Elena A. Tarasenko
- Lomonosov Moscow State University Department of Chemistry Leninskie gory 1–3 Moscow 119991 Russia
| | - Mikhail Ya. Melnikov
- Lomonosov Moscow State University Department of Chemistry Leninskie gory 1–3 Moscow 119991 Russia
| | - Konstantin L. Ivanov
- Lomonosov Moscow State University Department of Chemistry Leninskie gory 1–3 Moscow 119991 Russia
| | - Ekaterina M. Budynina
- Lomonosov Moscow State University Department of Chemistry Leninskie gory 1–3 Moscow 119991 Russia
- Lebedev Physical Institute Russian Academy of Sciences Leninskiy pr. 53 Moscow 119991 Russia
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12
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Jüstel PM, Stan A, Pignot CD, Ofial AR. Inherent Reactivity of Spiro-Activated Electrophilic Cyclopropanes. Chemistry 2021; 27:15928-15935. [PMID: 34569669 PMCID: PMC9298281 DOI: 10.1002/chem.202103027] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2021] [Indexed: 12/16/2022]
Abstract
The kinetics of the ring‐opening reactions of thiophenolates with geminal bis(acceptor)‐substituted cyclopropanes in DMSO at 20 °C was monitored by photometric methods. The determined second‐order rate constants of the SN2 reactions followed linear relationships with Mayr nucleophilicity parameters (N/sN) and Brønsted basicities (pKaH) of the thiophenolates as well as with Hammett substituent parameters (σ) for groups attached to the thiophenolates. Phenyl‐substituted cyclopropanes reacted by up to a factor of 15 faster than their unsubstituted analogues, in accord with the known activating effect of adjacent π‐systems in SN2 reactions. Variation of the electronic properties of substituents at the phenyl groups of the cyclopropanes gave rise to parabolic Hammett relationships. Thus, the inherent SN2 reactivity of electrophilic cyclopropanes is activated by electron‐rich π‐systems because of the more advanced C1−C2 bond polarization in the transition state. On the other hand, electron‐poor π‐systems also lower the energetic barriers for the attack of anionic nucleophiles owing to attractive electrostatic interactions.
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Affiliation(s)
- Patrick M Jüstel
- Department Chemie, Ludwig-Maximilians-Universität München, Butenandtstr. 5-13, 81377, München, Germany
| | - Alexandra Stan
- Department Chemie, Ludwig-Maximilians-Universität München, Butenandtstr. 5-13, 81377, München, Germany
| | - Cedric D Pignot
- Department Chemie, Ludwig-Maximilians-Universität München, Butenandtstr. 5-13, 81377, München, Germany
| | - Armin R Ofial
- Department Chemie, Ludwig-Maximilians-Universität München, Butenandtstr. 5-13, 81377, München, Germany
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13
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Tukhtaev HB, Sorokin ID, Melnikov MY, Budynina EM. Acetylenes and nitriles as unconventional reactants for aza-Wittig reactions. MENDELEEV COMMUNICATIONS 2020. [DOI: 10.1016/j.mencom.2020.11.001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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14
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Pattarawarapan M, Yamano D, Wiriya N, Yimklan S, Phakhodee W. Simultaneous Formation and Functionalization of Aryliminophosphoranes Using 1,3-Dihydro-1 H-benzimidazol-2-ones as Precursors. J Org Chem 2020; 85:13330-13338. [PMID: 33006471 DOI: 10.1021/acs.joc.0c01979] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
An atom- and step-economic synthesis of aryliminophosphoranes bearing ortho urea was achieved via unprecedented Ph3P-I2 mediated ring-opening of 1,3-dihydro-1H-benzimidazol-2-ones with secondary amines. Tandem aza-Wittig/heterocyclization of the functionalized aryliminophosphoranes upon treatment with isothiocyanates enables a facile access to a single regioisomer of N1-substituted 2-aminobenzimidazoles as well as fused tetracyclic quinazolinone derivatives in one-pot. 31P{1H} NMR studies suggested that the urea C-N bond of benzimidazolone is weakened by N-phosphorylation, leading to aminolysis rather than the expected deoxygenative amination.
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Affiliation(s)
- Mookda Pattarawarapan
- Department of Chemistry, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand.,Research Center on Chemistry for Development of Health Promoting Products from Northern Resources, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand
| | - Dolnapa Yamano
- Department of Chemistry, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand
| | - Nittaya Wiriya
- Department of Chemistry, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand
| | - Saranphong Yimklan
- Department of Chemistry, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand
| | - Wong Phakhodee
- Department of Chemistry, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand.,Research Center on Chemistry for Development of Health Promoting Products from Northern Resources, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand
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17
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Dagar A, Kim I. Expansion of diazepine heterocyclic chemical space via sequential Knoevenagel condensation-intramolecular aza-Wittig reaction: 2-acyl-4-aryl-5 H-pyrrolo[1,2- d][1,4]diazepines. Org Biomol Chem 2020; 18:9836-9851. [DOI: 10.1039/d0ob02002h] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Strategic combination of Knoevenagel condensation and intramolecular aza-Wittig reaction enabled facile access to pyrrole-fused 1,4-diazepines in excellent yields under mild conditions.
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Affiliation(s)
- Anuradha Dagar
- College of Pharmacy and Yonsei Institute of Pharmaceutical Sciences
- Yonsei University
- Incheon
- Republic of Korea
| | - Ikyon Kim
- College of Pharmacy and Yonsei Institute of Pharmaceutical Sciences
- Yonsei University
- Incheon
- Republic of Korea
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18
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Zi QX, Yang CL, Li K, Luo Q, Lin J, Yan SJ. Multicomponent Cascade Reaction by Metal-Free Aerobic Oxidation for Synthesis of Highly Functionalized 2-Amino-4-coumarinyl-5-arylpyrroles. J Org Chem 2019; 85:327-338. [PMID: 31799851 DOI: 10.1021/acs.joc.9b02063] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
A novel approach has been constructed for the synthesis of two types of 2-amino-4-coumarinyl-5-arylpyrroles (ACAPs, 5 and 6) through a cascade reaction and a metal-free catalyzed aerobic oxidation reaction of arylglyoxal monohydrates 1, 1,1-enediamines (EDAMs) 2 and 3, and 4-hydroxy-2H-chromen-2-ones 4 via multicomponent reactions to produce the target compounds with good to excellent yields. Specifically, hydroxyl-substituted 2-amino-4-coumarinyl-5-arylpyrroles, that is, 2-amino-4-coumarinyl-5-aryl-6-hydroxylpyrroles (ACAHPs) 6, were obtained by metal-free aerobic oxidation in 1,4-dioxane at simple reflux for approximately 10 h. As a result, ACAHPs 6 have been produced without metal catalysts or traditional oxidizing agents. This method represents a route to obtain the novel ACAPs in an environmentally friendly, concise, rapid, and practical manner with potential biological activity of the product.
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Affiliation(s)
- Quan-Xing Zi
- Key Laboratory of Medicinal Chemistry for Natural Resource (Yunnan University), Ministry of Education, School of Chemical Science and Technology , Yunnan University , Kunming 650091 , P. R. China
| | - Chang-Long Yang
- Key Laboratory of Medicinal Chemistry for Natural Resource (Yunnan University), Ministry of Education, School of Chemical Science and Technology , Yunnan University , Kunming 650091 , P. R. China
| | - Kun Li
- Key Laboratory of Medicinal Chemistry for Natural Resource (Yunnan University), Ministry of Education, School of Chemical Science and Technology , Yunnan University , Kunming 650091 , P. R. China
| | - Qin Luo
- Key Laboratory of Medicinal Chemistry for Natural Resource (Yunnan University), Ministry of Education, School of Chemical Science and Technology , Yunnan University , Kunming 650091 , P. R. China
| | - Jun Lin
- Key Laboratory of Medicinal Chemistry for Natural Resource (Yunnan University), Ministry of Education, School of Chemical Science and Technology , Yunnan University , Kunming 650091 , P. R. China
| | - Sheng-Jiao Yan
- Key Laboratory of Medicinal Chemistry for Natural Resource (Yunnan University), Ministry of Education, School of Chemical Science and Technology , Yunnan University , Kunming 650091 , P. R. China
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19
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Jadala C, Prasad B, Prasanthi AVG, Shankaraiah N, Kamal A. Transition metal-free one-pot synthesis of substituted pyrroles by employing aza-Wittig reaction. RSC Adv 2019; 9:30659-30665. [PMID: 35529397 PMCID: PMC9072206 DOI: 10.1039/c9ra06778g] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2019] [Accepted: 09/12/2019] [Indexed: 11/21/2022] Open
Abstract
A mild and metal-free one-pot synthetic strategy has been developed for the construction of substituted pyrroles by employing aza-Wittig reaction from a unique and unexplored combination of chromones and phenacyl azides. This method does not compromise the diverse substitutions on both the phenacyl azides and chromones. The merits of this method are wide substrate scope, easy functionalization, short reaction time, operationally simple, and higher yields. Moreover, this method is amenable for the generation of a library of key pyrrole building blocks. A mild and metal-free one-pot synthetic strategy has been developed for the construction of substituted pyrroles by employing aza-Wittig reaction from a unique and unexplored combination of chromones and phenacyl azides.![]()
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Affiliation(s)
- Chetna Jadala
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research (NIPER) Hyderabad-500 037 India
| | - Budaganaboyina Prasad
- Medicinal Chemistry & Pharmacology, CSIR-Indian Institute of Chemical Technology Hyderabad 500 007 India
| | - A V G Prasanthi
- Medicinal Chemistry & Pharmacology, CSIR-Indian Institute of Chemical Technology Hyderabad 500 007 India
| | - Nagula Shankaraiah
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research (NIPER) Hyderabad-500 037 India
| | - Ahmed Kamal
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research (NIPER) Hyderabad-500 037 India .,Medicinal Chemistry & Pharmacology, CSIR-Indian Institute of Chemical Technology Hyderabad 500 007 India .,School of Pharmaceutical Education and Research (SPER), Jamia Hamdard New Delhi 110062 India
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Li K, Chen L, Fan YX, Wei Y, Yan SJ. Multicomponent Tether Catalysis Synthesis of Highly Functionalized 4-(Pyridin-2-ylmethyl)-2-aminopyrroles via Cascade Reaction Is Accompanied by Decarboxylation. J Org Chem 2019; 84:11971-11982. [DOI: 10.1021/acs.joc.9b01814] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Kun Li
- Key Laboratory of Medicinal Chemistry for Natural Resource (Yunnan University), Ministry of Education, School of Chemical Science and Technology, Yunnan University, Kunming 650091, P. R. China
| | - Li Chen
- Key Laboratory of Medicinal Chemistry for Natural Resource (Yunnan University), Ministry of Education, School of Chemical Science and Technology, Yunnan University, Kunming 650091, P. R. China
| | - Yun-Xiang Fan
- Key Laboratory of Medicinal Chemistry for Natural Resource (Yunnan University), Ministry of Education, School of Chemical Science and Technology, Yunnan University, Kunming 650091, P. R. China
| | - Yao Wei
- Key Laboratory of Medicinal Chemistry for Natural Resource (Yunnan University), Ministry of Education, School of Chemical Science and Technology, Yunnan University, Kunming 650091, P. R. China
| | - Sheng-Jiao Yan
- Key Laboratory of Medicinal Chemistry for Natural Resource (Yunnan University), Ministry of Education, School of Chemical Science and Technology, Yunnan University, Kunming 650091, P. R. China
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Domino Michael/aza-Wittig reaction in the diastereoselective construction of spiro[azepane-4,3′-oxindoles]. Tetrahedron Lett 2019. [DOI: 10.1016/j.tetlet.2019.06.037] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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22
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Ivanov KL, Melnikov MY, Budynina EM. Phosphazenomalonates as Catalysts and Reactants in (4+3) Annulation to Acrolein. Org Lett 2019; 21:4464-4468. [PMID: 31184158 DOI: 10.1021/acs.orglett.9b01292] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The concept of combining a catalyst and an activated center in one molecule was implemented in Michael donors functionalized with phosphazene units. First, the phosphazene group catalyzes Michael addition and then acts as a reactant in an intramolecular aza-Wittig reaction. The viability of this strategy was demonstrated by our development of a one-pot method for azepane core construction starting from functionalized azides, triphenylphosphine and acrolein.
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Affiliation(s)
- Konstantin L Ivanov
- Department of Chemistry , Lomonosov Moscow State University , Leninskie gory 1-3 , Moscow 119991 , Russia
| | - Mikhail Ya Melnikov
- Department of Chemistry , Lomonosov Moscow State University , Leninskie gory 1-3 , Moscow 119991 , Russia
| | - Ekaterina M Budynina
- Department of Chemistry , Lomonosov Moscow State University , Leninskie gory 1-3 , Moscow 119991 , Russia
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