1
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Zhao MN, Yang ZM, Li LQ. DMF as an amine source: iron-catalyzed cyclization of 2 H-azirines to imidazoles. Chem Commun (Camb) 2024. [PMID: 38258986 DOI: 10.1039/d3cc06147g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2024]
Abstract
A novel method has been developed for the synthesis of 1-methyl-4,5-diaryl-1H-imidazoles through Fe(II)-catalyzed cyclization of 2H-azirines and N,N-dimethylformamide (DMF) as an amine source. This transformation involves the cleavage of C-N and CN double bonds and the construction of new C-N and CN double bonds. The reaction has readily available starting materials, a wide range of substrates and mild reaction conditions. In addition, the reaction also facilitated the convenient synthesis of 1-methyl-2,4,5-triaryl-1H-imidazoles.
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Affiliation(s)
- Mi-Na Zhao
- College of Chemistry and Chemical Engineering, Shaanxi Xueqian Normal University, Xi'an, Shaanxi 710100, P. R. China.
| | - Zi-Mo Yang
- Shaanxi Key Laboratory of Phytochemistry, College of Chemistry and Chemical Engineering, Baoji University of Arts and Sciences, Baoji, Shaanxi 721013, P. R. China
| | - Lian-Qing Li
- College of Chemistry and Chemical Engineering, Shaanxi Xueqian Normal University, Xi'an, Shaanxi 710100, P. R. China.
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2
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Gaware S, Chatterjee R, Kapdi AR, Dandela R. Copper-catalysed chemoselective C-OH bond activation of N-benzoyl cytosine: facile access to 2-(dimethylamino)pyrimidine. Org Biomol Chem 2023. [PMID: 37448341 DOI: 10.1039/d3ob00659j] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/15/2023]
Abstract
A novel method for the direct amination of N-benzoyl cytosine has been developed, giving access to 2-(dimethylamino)pyrimidine derivatives. A copper(II) catalyst and tert-butyl hydroperoxide easily promote the selective amination process that proceeds via C-OH bond activation. This practical approach can utilize different formamide molecules, N,N-dimethylformamide and N,N-diethylformamide, as efficient amino (-NMe2, -NEt2) sources. Moreover, the facile nature of the procedure, its broad tolerance of aliphatic and aromatic substrates, the high yields and ease of separation of the products, and the fact that it can be conducted under aerobic conditions are all notable advantages of the present protocol.
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Affiliation(s)
- Sujeet Gaware
- Department of Chemistry, Institute of Chemical Technology - Indian Oil Odisha Campus, IIT Kharagpur Extension Centre, Mouza Samantpuri, Bhubaneswar, Odisha-751013, India.
| | - Rana Chatterjee
- Department of Chemistry, Institute of Chemical Technology - Indian Oil Odisha Campus, IIT Kharagpur Extension Centre, Mouza Samantpuri, Bhubaneswar, Odisha-751013, India.
| | - Anant R Kapdi
- Department of Chemistry, Institute of Chemical Technology, Nathalal Parekh Road, Matunga, Mumbai-400019, India
| | - Rambabu Dandela
- Department of Chemistry, Institute of Chemical Technology - Indian Oil Odisha Campus, IIT Kharagpur Extension Centre, Mouza Samantpuri, Bhubaneswar, Odisha-751013, India.
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3
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qin Z, Ma R, Ying S, Li F, Ma Y. Synthesis of substituted pyrimido[1,2‐b]indazoles through [3+2+1] cyclization of 3‐aminoindazoles, ketones and N,N‐dimethylaminoethanol as one carbon synthon. Adv Synth Catal 2022. [DOI: 10.1002/adsc.202200707] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
| | | | | | - Fanzhu Li
- Zhejiang Chinese Medical University CHINA
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4
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Govindan K, Jayaram A, Duraisamy T, Chen NQ, Lin WY. Metal-Free N-H/C-H Carbonylation by Phenyl Isocyanate: Divergent Synthesis of Six-Membered N-Heterocycles. J Org Chem 2022; 87:8719-8729. [PMID: 35723982 DOI: 10.1021/acs.joc.2c01026] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
We disclose a method using phenyl isocyanate to synthesize carbonyl-containing N-heterocycles. The metal-free novel approach for both N-H and C-H carbonylation processes was successfully refined, delivering a range of synthetically valuable derivatives of quinazoline-2,4(1H,3H)-dione, 2H-benzo[e] [1,2,4] thiadiazin-3(4H)-one 1,1-dioxide, and pyrrolo[1,2-a] quinoxalin-4(5H)-one. The protocol features broad substrates with diverse reactions suitable for excellent yields, mild conditions, and good functional group compatibility. Moreover, the applicability of the reaction was characterized by gram-scale synthesis and synthetic transformations for drug molecules.
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Affiliation(s)
- Karthick Govindan
- Department of Medicinal and Applied Chemistry, Kaohsiung Medical University, Kaohsiung 80708, Taiwan, ROC
| | - Alageswaran Jayaram
- Department of Medicinal and Applied Chemistry, Kaohsiung Medical University, Kaohsiung 80708, Taiwan, ROC
| | - Tamilselvan Duraisamy
- Department of Medicinal and Applied Chemistry, Kaohsiung Medical University, Kaohsiung 80708, Taiwan, ROC
| | - Nian-Qi Chen
- Department of Medicinal and Applied Chemistry, Kaohsiung Medical University, Kaohsiung 80708, Taiwan, ROC
| | - Wei-Yu Lin
- Department of Medicinal and Applied Chemistry, Kaohsiung Medical University, Kaohsiung 80708, Taiwan, ROC.,Department of Medical Research, Kaohsiung Medical University Hospital, Kaohsiung 80708, Taiwan, ROC.,Drug Development and Value Creation Research Centre, Kaohsiung Medical University, Kaohsiung 80708, Taiwan, ROC
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5
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DMSO as C1 source under metal‐and oxidant‐free conditions: NH4SCN mediated synthesis of quinazolinone and dihydroquinazolin‐4(1H)‐one derivatives. ASIAN J ORG CHEM 2022. [DOI: 10.1002/ajoc.202200274] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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6
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Lin WY, Govindan K, Duraisamy T, Jayaram A, Senadi GC. Copper-Catalyzed Oxidative Cyclization of 2-Aminobenzamide Derivatives: Efficient Syntheses of Quinazolinones and Indazolones. SYNTHESIS-STUTTGART 2022. [DOI: 10.1055/a-1667-3977] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
AbstractA simple copper-catalyzed assembly to formulate quinazolinone and indazolone derivatives in a single protocol manner is reported. These transformations are based on the fact that DMF can serve as a reaction solvent and one carbon synthon for the construction of heterocyclic rings. Moreover, this protocol features base-free and Brønsted acid free environmentally benign conditions with broad synthetic scope. A good scalability is demonstrated.
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Affiliation(s)
- Wei-Yu Lin
- Department of Medicinal and Applied Chemistry, Kaohsiung Medical University
- Department of Medical Research, Kaohsiung Medical University Hospital
- Drug Development and Value Creation Research Centre, Kaohsiung Medical University
| | - Karthick Govindan
- Department of Medicinal and Applied Chemistry, Kaohsiung Medical University
| | | | | | - Gopal Chandru Senadi
- Department of Chemistry, Faculty of Engineering and Technology SRM Institute of Science and Technology
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7
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Festa A, Raspertov P, Voskressensky L. 2‐(Alkynyl)anilines and derivatives – versatile reagents for heterocyclic synthesis. Adv Synth Catal 2022. [DOI: 10.1002/adsc.202101363] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Alexey Festa
- Peoples' Friendship University of Russia RUSSIAN FEDERATION
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8
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Qin Z, Zhang R, Ying S, Ma Y. Iron-catalyzed [3+2+1] annulation of 2-aminobenzimidazoles/3-aminopyrazoles and aromatic alkynes using N,N-dimethylaminoethanol as one carbon synthon for the synthesis of pyrimido[1,2-a]benzimidazoles and pyrimido[1,2-b]indazoles. Org Chem Front 2022. [DOI: 10.1039/d2qo01008a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A simple and efficient method for the synthesis of pyrimido[1,2-a]benzimidazoles and pyrimido[1,2-b]indazoles from 2-aminobenzimidazoles/3-aminoindazoles, alkynes and N,N-dimethylaminoethanol in a three-component [3+2+1] annulation catalyzed by FeCl3 has been established, where N,N-dimethylaminoethanol...
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9
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Muzart J. A Journey from June 2018 to October 2021 with N, N-Dimethylformamide and N, N-Dimethylacetamide as Reactants. Molecules 2021; 26:6374. [PMID: 34770783 PMCID: PMC8587108 DOI: 10.3390/molecules26216374] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2021] [Revised: 10/14/2021] [Accepted: 10/15/2021] [Indexed: 02/01/2023] Open
Abstract
A rich array of reactions occur using N,N-dimethylformamide (DMF) or N,N-dimethylacetamide (DMAc) as reactants, these two amides being able to deliver their own H, C, N, and O atoms for the synthesis of a variety of compounds. This account highlights the literature published since June 2018, completing previous reviews by the author.
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Affiliation(s)
- Jacques Muzart
- Institut de Chimie Moléculaire de Reims, CNRS-Université de Reims Champagne-Ardenne, B.P. 1039, CEDEX 2, 51687 Reims, France
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10
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Zhang Y, Kuang J, Xiao X, Wang L, Ma Y. DMSO as a Dual Carbon Synthon and Water as Oxygen Donor for the Construction of 1,3,5-Oxadiazines from Amidines. Org Lett 2021; 23:3960-3964. [PMID: 33938756 DOI: 10.1021/acs.orglett.1c01116] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A selective and efficient synthesis of diaryl 1,3,5-oxadiazines was established for the first time from simple and readily available amidines in wet DMSO. DMSO was employed as a dual carbon synthon and water offered the oxygen atom to construct the oxadiazine ring. The reaction involved two new C-N and two new C-O bond formations.
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Affiliation(s)
- Yi Zhang
- Institute of Advanced Studies and School of Pharmaceutical and Chemical Engineering, Taizhou University, Taizhou 318000, P.R. China.,College of Pharmaceutical Sciences, Zhejiang Chinese Medical University, Hangzhou, 310053, P.R. China
| | - Jinqiang Kuang
- Institute of Advanced Studies and School of Pharmaceutical and Chemical Engineering, Taizhou University, Taizhou 318000, P.R. China
| | - Xuqiong Xiao
- Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education, Hangzhou Normal University, no. 2318 Yuhangtang Road, Hangzhou311121, P.R. China
| | - Lei Wang
- Institute of Advanced Studies and School of Pharmaceutical and Chemical Engineering, Taizhou University, Taizhou 318000, P.R. China
| | - Yongmin Ma
- Institute of Advanced Studies and School of Pharmaceutical and Chemical Engineering, Taizhou University, Taizhou 318000, P.R. China.,College of Pharmaceutical Sciences, Zhejiang Chinese Medical University, Hangzhou, 310053, P.R. China
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11
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Yang M, Jian Y, Zhang W, Sun H, Zhang G, Wang Y, Gao Z. Synthesis of quinolines via sequential addition and I 2-mediated desulfurative cyclization. RSC Adv 2021; 11:38889-38893. [PMID: 35493239 PMCID: PMC9044151 DOI: 10.1039/d1ra06976d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2021] [Accepted: 11/28/2021] [Indexed: 11/21/2022] Open
Abstract
An efficient one-pot approach for the synthesis of quinolines from o-aminothiophenol and 1,3-ynone under mild conditions is disclosed. With the aid of ESI-MS analysis and parallel experiments, a three-step mechanism is proposed—a two-step Michael addition–cyclization condensation step leading to intermediate 1,5-benzothiazepine catalyzed by zirconocene amino acid complex Cp2Zr(η1-C9H10NO2)2, followed by I2-mediated desulfurative step. An efficient one-pot approach is proposed for the synthesis of quinolines through Lewis acid-catalyzed cyclization and iodine-mediated desulfurization reactions.![]()
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Affiliation(s)
- Mingming Yang
- Key Laboratory of Applied Surface and Colloid Chemistry, Xi'an Key Laboratory of Organometallic Material Chemistry, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an 710119, P. R. China
| | - Yajun Jian
- Key Laboratory of Applied Surface and Colloid Chemistry, Xi'an Key Laboratory of Organometallic Material Chemistry, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an 710119, P. R. China
| | - Weiqiang Zhang
- Key Laboratory of Applied Surface and Colloid Chemistry, Xi'an Key Laboratory of Organometallic Material Chemistry, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an 710119, P. R. China
| | - Huaming Sun
- Key Laboratory of Applied Surface and Colloid Chemistry, Xi'an Key Laboratory of Organometallic Material Chemistry, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an 710119, P. R. China
| | - Guofang Zhang
- Key Laboratory of Applied Surface and Colloid Chemistry, Xi'an Key Laboratory of Organometallic Material Chemistry, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an 710119, P. R. China
| | - Yanyan Wang
- Key Laboratory of Applied Surface and Colloid Chemistry, Xi'an Key Laboratory of Organometallic Material Chemistry, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an 710119, P. R. China
| | - Ziwei Gao
- Key Laboratory of Applied Surface and Colloid Chemistry, Xi'an Key Laboratory of Organometallic Material Chemistry, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an 710119, P. R. China
- A School of Chemistry & Chemical Engineering, Xinjiang Normal University, Urumqi 830054, P. R. China
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12
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Ghosh P, Samanta S, Ghosh S, Jana S, Hajra A. Aminomethylation of imidazopyridines using N,N-dimethylformamide as an aminomethylating reagent under Cu(II)-catalysis. Tetrahedron Lett 2020. [DOI: 10.1016/j.tetlet.2020.152581] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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