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Tamaddon F, Maddah-Roodan S. Advanced Guareschi-Thorpe synthesis of pyridines in green buffer, and pH-controlled aqueous medium with ammonium carbonate. RSC Adv 2023; 13:24846-24853. [PMID: 37608967 PMCID: PMC10440631 DOI: 10.1039/d3ra04590k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2023] [Accepted: 08/14/2023] [Indexed: 08/24/2023] Open
Abstract
Hydroxy-cyanopyridines are easily synthesized via an advanced version of the Guareschi-Thorpe reaction by either three-component condensation of alkyl cyanoacetate or cyanoacetamide with 1,3-dicarbonyls and ammonium carbonate in an aqueous medium. Reactions proceed productively to give the desired products in high yields. Simple mechanistic monitoring showed the role of (NH4)2CO3 as both a nitrogen source for the pyridine ring and the reaction promoter. This new multicomponent approach for pyridine synthesis is inexpensive, user-friendly, and eco-friendly, while green buffer conditions, versatility, precipitation of products in the reaction medium, and simple work-up are extra advantages.
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Affiliation(s)
- Fatemeh Tamaddon
- Department of Chemistry, Faculty of Science, Yazd University Yazd 89195-741 Iran
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Gao H, Zhou L, Wan JP, Liu Y. Rongalite as C1 Synthon in the Synthesis of Divergent Pyridines and Quinolines. J Org Chem 2023. [PMID: 37171406 DOI: 10.1021/acs.joc.3c00428] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
Rongalite has been used as a cheap and efficient carbon synthon for the synthesis of divergent N-heteroaromatics, including different pyridines and quinolines. The selective synthesis of different products can be achieved by employing enaminones or enaminones/anilines as reaction partners. In addition, compared with the reaction using conventional aldehyde synthons, rongalite displays an evident advantage in providing products with considerably higher product yields under milder conditions. The GC-MS analysis of the reaction process has been performed to probe the possible reaction mechanism.
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Affiliation(s)
- Huan Gao
- National Engineering Research Center for Carbohydrate Synthesis, College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, China
| | - Liyun Zhou
- National Engineering Research Center for Carbohydrate Synthesis, College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, China
| | - Jie-Ping Wan
- National Engineering Research Center for Carbohydrate Synthesis, College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, China
| | - Yunyun Liu
- National Engineering Research Center for Carbohydrate Synthesis, College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, China
- International Innovation Center for Forest Chemicals and Materials, Nanjing Forestry University, Nanjing 210037, China
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Zeng J, Wan JP, Liu Y. Photocatalytic C–H Thiocyanation of NH 2-Enaminones and the Tunable Synthetic Routes to 2-Aminothiazoles and 2-Thiazolinones. J Org Chem 2022; 87:13195-13203. [DOI: 10.1021/acs.joc.2c01667] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Junlong Zeng
- National Research Center for Carbohydrate Synthesis, College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, P.R. China
| | - Jie-Ping Wan
- National Research Center for Carbohydrate Synthesis, College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, P.R. China
| | - Yunyun Liu
- National Research Center for Carbohydrate Synthesis, College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, P.R. China
- Zhejiang Key Laboratory of Alternative Technologies for Fine Chemicals Process, Shaoxing University, Zhejiang 312000, P.R. China
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Wang Z, Zhao B, Liu Y, Wan J. Recent Advances in Reactions Using Enaminone in Water or Aqueous Medium. Adv Synth Catal 2022. [DOI: 10.1002/adsc.202200144] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Zhouying Wang
- College of Chemistry and Chemical Engineering Jiangxi Normal University Nanchang 330022 People's Republic of China
| | - Baoli Zhao
- Zhejiang Key Laboratory of Alternative Technologies for Fine Chemicals Process Shaoxing University Shaoxing Zhejiang 312000 People's Republic of China
| | - Yunyun Liu
- College of Chemistry and Chemical Engineering Jiangxi Normal University Nanchang 330022 People's Republic of China
| | - Jie‐Ping Wan
- College of Chemistry and Chemical Engineering Jiangxi Normal University Nanchang 330022 People's Republic of China
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Cavaca LAS, Gomes RFA, Afonso CAM. Preparation of Thioaminals in Water. Molecules 2022; 27:molecules27051673. [PMID: 35268774 PMCID: PMC8911761 DOI: 10.3390/molecules27051673] [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: 01/05/2022] [Revised: 02/18/2022] [Accepted: 03/01/2022] [Indexed: 11/17/2022] Open
Abstract
The presence of sulfur–carbon bonds is transversal to several areas of chemistry, e.g., drug discovery, materials, and chemical biology. However, a lack of efficient and sustainable procedures for the preparation of thioaminals, the N,S-analogues of O,O-acetals, contributes to this functional group often being overlooked by the scientific community. In this work is described the formation of thioaminals in water promoted by copper(II) triflate.
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Shafran YM, Hussein AA, Beliaev NA, Shevyrin VA, Shityakov S, Beryozkina TV, Bakulev VA. Selective Synthesis of Azoloyl NH-1,2,3-Triazoles and Azolyl Diazoketones: Experimental and Computational Insights. ACS OMEGA 2022; 7:5008-5031. [PMID: 35187318 PMCID: PMC8851643 DOI: 10.1021/acsomega.1c05898] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/21/2021] [Accepted: 01/18/2022] [Indexed: 05/03/2023]
Abstract
Here, we report that the reaction of enaminones, from a class of azole series, with sulfonyl azides leads to a difficult-to-separate mixture of two pairs of compounds: (1) 4-azoloyl-NH-1,2,3-triazoles with sulfonamides and (2) azolyl diazoketones with N-sulfonamidines, as a result of the implementation of two competing reactions. On one hand, the electron-donating methyl or methoxy group in the aryl para-position of arylsulfonyl azides favors the production of NH-1,2,3-triazoles together with sulfonamides. On the other hand, the use of highly electrophilic 4-nitrophenylsulfonyl azide promotes the formation of diazoketones and sulfonamidines. It is shown that the direction of each reaction is not only controlled by the nature of the initial enaminones and sulfonyl azides but also depends on the tested solvent. The problem of removing sulfonamides and amidines from the desired products was solved for the first time using new water-soluble enaminones. Based on the experimental and computational studies, the factors contributing to the selective course of alternative reactions were identified, and methods for the synthesis of azoloyl-NH-1,2,3-triazoles and azolyl diazoketones were developed. Density functional theory (DFT) results have shown that the 1,3-dipolar cycloaddition is totally driven toward one single regioisomer with a high asynchronous bond formation, and the introduction of an electron-deficient group in sulfonyl azides induces faster cycloaddition. Additionally, DFT calculations were used to gain further mechanistic insights on the reaction studied here.
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Affiliation(s)
- Yuri M. Shafran
- Technology
for Organic Synthesis Department, Ural Federal
University, 19 Mira Street, Ekaterinburg 620002, Russia
| | - Aqeel A. Hussein
- Department
of Pharmacy, College of Medicine, Komar
University of Science and Technology, Sulaymaniyah 46002, Kurdistan Region, Iraq
| | - Nikolai A. Beliaev
- Technology
for Organic Synthesis Department, Ural Federal
University, 19 Mira Street, Ekaterinburg 620002, Russia
| | - Vadim A. Shevyrin
- Technology
for Organic Synthesis Department, Ural Federal
University, 19 Mira Street, Ekaterinburg 620002, Russia
| | - Sergey Shityakov
- Laboratory
of Chemoinformatics, Infochemistry Scientific Center, ITMO University, 9 Lomonosova Street, Saint-Petersburg 191002, Russia
| | - Tetyana V. Beryozkina
- Technology
for Organic Synthesis Department, Ural Federal
University, 19 Mira Street, Ekaterinburg 620002, Russia
| | - Vasiliy A. Bakulev
- Technology
for Organic Synthesis Department, Ural Federal
University, 19 Mira Street, Ekaterinburg 620002, Russia
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Singh GS. Synthesis and chemistry of diazo compounds under microwave irradiation: A review. ASIAN J ORG CHEM 2022. [DOI: 10.1002/ajoc.202100803] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Girija S. Singh
- University of Botswana Faculty of Science Chemistry Notwane road 0022 Gaborone BOTSWANA
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Amine-catalyzed synthesis of N2-sulfonyl 1,2,3-triazole in water and the tunable N2-H 1,2,3-triazole synthesis in DMSO via metal-free enamine annulation. CHINESE CHEM LETT 2022. [DOI: 10.1016/j.cclet.2021.08.003] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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Wu Y, Du J, Hao W, Jiang B. Synthesis of Fused Pyridines via Microwave-Assisted [3+3] Cyclization. CHINESE J ORG CHEM 2021. [DOI: 10.6023/cjoc202102018] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Zheng X, Liu Y, Wan JP. Metal-Free Synthesis of 1,2,3-Triazoles in Pure Water via the Enamine Modified Annulation Reactions with Tosyl Azide. CHINESE J ORG CHEM 2021. [DOI: 10.6023/cjoc202104053] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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11
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Gan L, Yu Q, Liu Y, Wan JP. Scissoring Enaminone C═C Double Bond by Free Radical Process for the Synthesis of α-Trifluoromethyl Ketones with CF 3SO 2Na. J Org Chem 2020; 86:1231-1237. [PMID: 33289380 DOI: 10.1021/acs.joc.0c02431] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The C═C double bond cleavage on tertiary enaminones, enabling the formation of a new C-CF3 bond, has been realized as a practical method for the synthesis of α-trifluoromethyl ketones with only the promotion of TBHP and ambient heating. Control experiments support that the reactions proceed via a featured free radical process. The deuterium labeling experiment employing D2O indicates that water participated in the product formation by donating the hydrogen atom for the newly generated α-C-H bond in the product.
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Affiliation(s)
- Lu Gan
- College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, P.R. China.,School of Science, Nanchang Institute of Technology, Nanchang 330029, P.R. China
| | - Qing Yu
- College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, P.R. China
| | - Yunyun Liu
- College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, P.R. China
| | - Jie-Ping Wan
- College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, P.R. China
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Synthesis and structure of dialkyl (Z)-3-amino-2-cyano-4-diazopent-2-enedioates. MONATSHEFTE FUR CHEMIE 2020. [DOI: 10.1007/s00706-020-02712-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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