1
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Xie L, Zhao C, Wang Z, Chen Z, Zhao Y, Liu X, Xu X, Liu W, Li X, Wu L. Synthesis of Polycyclic Imidazolidinones via Cascade [3 + 2]-Annulation of β-Oxo-acrylamides with Cyclic N-Sulfonyl Imines. J Org Chem 2023; 88:15805-15816. [PMID: 37906181 DOI: 10.1021/acs.joc.3c01878] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2023]
Abstract
An Et3N-catalyzed cascade [3 + 2]-annulation of β-oxo-acrylamides with cyclic N-sulfonyl ketimines or sulfamate-derived imines is developed under mild reaction conditions, which provides a concise and efficient route to access valuable sultam- or sulfamidate-fused imidazolidinone derivatives in good to excellent yields (80-95% yields) with excellent diastereoselectivities (>20:1 drs). The current protocol features atom economy, a transition-metal-free process, and broad functional group tolerance. Moreover, the asymmetric variant of the [3 + 2]-cycloaddition reaction was achieved in the presence of diphenylethanediamine or quinine-based bifunctional squaramide organocatalysts C-1 and C-11, giving the corresponding chiral polycyclic imidazolidinones in 68-90% yields with 25-94% ees and >20:1 drs in all cases.
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Affiliation(s)
- Lei Xie
- School of Pharmaceutical Sciences, Liaocheng University, Liaocheng 252000, Shandong, P. R. China
- Liaocheng Key Laboratory of Quality Control and Pharmacodynamic Evaluation of Ganoderma Lucidum, Liaocheng 252000, Shandong, P. R. China
| | - Chenyi Zhao
- School of Pharmaceutical Sciences, Liaocheng University, Liaocheng 252000, Shandong, P. R. China
- Liaocheng Key Laboratory of Quality Control and Pharmacodynamic Evaluation of Ganoderma Lucidum, Liaocheng 252000, Shandong, P. R. China
| | - Zhaoxue Wang
- School of Pharmaceutical Sciences, Liaocheng University, Liaocheng 252000, Shandong, P. R. China
- Liaocheng Key Laboratory of Quality Control and Pharmacodynamic Evaluation of Ganoderma Lucidum, Liaocheng 252000, Shandong, P. R. China
| | - Zirui Chen
- School of Pharmaceutical Sciences, Liaocheng University, Liaocheng 252000, Shandong, P. R. China
- Liaocheng Key Laboratory of Quality Control and Pharmacodynamic Evaluation of Ganoderma Lucidum, Liaocheng 252000, Shandong, P. R. China
| | - Yingying Zhao
- School of Pharmaceutical Sciences, Liaocheng University, Liaocheng 252000, Shandong, P. R. China
- Liaocheng Key Laboratory of Quality Control and Pharmacodynamic Evaluation of Ganoderma Lucidum, Liaocheng 252000, Shandong, P. R. China
| | - Xinghan Liu
- School of Pharmaceutical Sciences, Liaocheng University, Liaocheng 252000, Shandong, P. R. China
- Liaocheng Key Laboratory of Quality Control and Pharmacodynamic Evaluation of Ganoderma Lucidum, Liaocheng 252000, Shandong, P. R. China
| | - Xiangdong Xu
- Liaocheng Inspection and Testing Center, Liaocheng 252000, Shandong, P. R. China
| | - Wanxing Liu
- The Non-Public Enterprise Service Center of Liaocheng, Liaocheng 252000, Shandong, P. R. China
| | - Xiaojing Li
- School of Pharmaceutical Sciences, Liaocheng University, Liaocheng 252000, Shandong, P. R. China
- Liaocheng Key Laboratory of Quality Control and Pharmacodynamic Evaluation of Ganoderma Lucidum, Liaocheng 252000, Shandong, P. R. China
| | - Lingang Wu
- School of Pharmaceutical Sciences, Liaocheng University, Liaocheng 252000, Shandong, P. R. China
- Liaocheng Key Laboratory of Quality Control and Pharmacodynamic Evaluation of Ganoderma Lucidum, Liaocheng 252000, Shandong, P. R. China
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2
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Huynh TNT, Nguyen KT, Sukwattanasinitt M, Wacharasindhu S. Electrochemical NaI-mediated one-pot synthesis of guanidines from isothiocyanates via tandem addition-guanylation. Org Biomol Chem 2023; 21:8667-8674. [PMID: 37672208 DOI: 10.1039/d3ob01113e] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/07/2023]
Abstract
In this study, we present an electrochemical approach for the synthesis of guanidines from isothiocyanates and amines in a single reaction vessel. This one-pot operation takes place in aqueous media, utilizing an undivided cell setup with NaI serving as both the electrolyte and mediator. The process involves the in situ generation of thiourea, followed by electrolytic guanylation with amines. Under ambient temperature conditions, we successfully demonstrated the formation of 30 different guanidine compounds, achieving yields ranging from fair to excellent. Furthermore, the synthesis method could be carried out on a gram scale with a good yield. This protocol stands out for its cost-effectiveness, step-economical design, high tolerance towards various functional groups, and environmentally friendly reaction conditions.
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Affiliation(s)
- Thao Nguyen Thanh Huynh
- Department of Chemistry, Faculty of Science, Chulalongkorn University, Bangkok, Thailand 10330.
| | - Khuyen Thu Nguyen
- Department of Chemistry, Faculty of Science, Chulalongkorn University, Bangkok, Thailand 10330.
| | | | - Sumrit Wacharasindhu
- Department of Chemistry, Faculty of Science, Chulalongkorn University, Bangkok, Thailand 10330.
- Green Chemistry for Fine Chemical Productions and Environmental Remediation Research Unit, Department of Chemistry, Faculty of Science, Chulalongkorn University, Bangkok, Thailand 10330
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3
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Jiang W, Wang B, Song C, Liu J. Electrocatalytic Desulfurizative Amination of Thioureas to Guanidines. J Org Chem 2023; 88:14601-14609. [PMID: 37788335 DOI: 10.1021/acs.joc.3c01612] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/05/2023]
Abstract
Guanidine has been known as an important class of N-containing molecules with a wide range of applications. Described here is a selective and efficient electrochemical approach to the synthesis of guanidines from easily accessible thioureas and amines. The key to success for this reaction is the in situ generation of a hypervalent iodine reagent as a catalyst from iodoarene by anodic oxidation. This mild desulfurizative amination presents ample substrate scope and good functional group tolerance without the use of extra stoichiometric chemical oxidants. As only electrons serve as the oxidation reagents, this method offers a more straightforward and sustainable manner toward versatile guanidines, including late-stage functionalization of pharmaceutically relevant molecules.
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Affiliation(s)
- Wei Jiang
- College of Chemistry and Chemical Engineering, State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University, 410082, Changsha, China
| | - Bing Wang
- College of Chemistry and Chemical Engineering, State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University, 410082, Changsha, China
| | - Chunlan Song
- College of Chemistry and Chemical Engineering, State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University, 410082, Changsha, China
| | - Jie Liu
- College of Chemistry and Chemical Engineering, State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University, 410082, Changsha, China
- Greater Bay Area Institute for Innovation, Hunan University, Guangzhou 511300, Guangdong Province, China
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4
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Zhao M, Guo Y, Wang Q, Liu L, Zhang S, Guo W, Wu LP, Qiu FG. Synthesis of 2-iminothiazolidin-4-ones via copper-catalyzed [2 + 1 + 2] tandem annulation. RSC Adv 2023; 13:2220-2224. [PMID: 36741140 PMCID: PMC9834997 DOI: 10.1039/d2ra07872d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2022] [Accepted: 01/03/2023] [Indexed: 01/13/2023] Open
Abstract
In this paper, an efficient synthesis of 2-iminothiazolidin-4-ones through a copper-catalyzed tandem annulation reaction of alkyl amines, isothiocyanates and diazo acetates is presented. Notable advantages of this [2 + 1 + 2] cyclization methodology include readily accessible starting materials, simple operation, mild reaction conditions, high yields, step-economy and diverse functional group tolerance. In addition, the reaction is applicable to the gram scale synthesis and the preparation of bioactive molecules.
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Affiliation(s)
- Mingming Zhao
- Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences Guangzhou 510530 P. R. China
- University of Chinese Academy of Sciences Beijing 100049 P. R. China
| | - Yiming Guo
- Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences Guangzhou 510530 P. R. China
- University of Chinese Academy of Sciences Beijing 100049 P. R. China
| | - Qi Wang
- Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences Guangzhou 510530 P. R. China
- University of Chinese Academy of Sciences Beijing 100049 P. R. China
| | - Lanqi Liu
- Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences Guangzhou 510530 P. R. China
- University of Chinese Academy of Sciences Beijing 100049 P. R. China
| | - Shujie Zhang
- Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences Guangzhou 510530 P. R. China
- University of Chinese Academy of Sciences Beijing 100049 P. R. China
| | - Wei Guo
- Key Laboratory of Organo-Pharmaceutical Chemistry of Jiangxi Province, Gannan Normal University Ganzhou 341000 P. R. China
| | - Lin-Ping Wu
- Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences Guangzhou 510530 P. R. China
- University of Chinese Academy of Sciences Beijing 100049 P. R. China
| | - Fayang G Qiu
- Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences Guangzhou 510530 P. R. China
- University of Chinese Academy of Sciences Beijing 100049 P. R. China
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5
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Racheeti PB, Gunturu RB, Pinapati SR, Kowthalam A, Tamminana R, Rudraraju R. Hypervalent iodine(III) promoted synthesis of isothiocyanates in water. SYNTHETIC COMMUN 2022. [DOI: 10.1080/00397911.2022.2148222] [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)
| | - Ratna Babu Gunturu
- Department of Chemistry, Acharya Nagarjuna University, Guntur, AP, India
| | | | - Anitha Kowthalam
- Department of Chemistry, Sri Krishna Devaraya University, Ananthapur, AP, India
| | - Ramana Tamminana
- Department of Chemistry, VIT-AP University, Amaravati, AP, India
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6
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Wan Y, Wu H, Ma N, Zhao J, Zhang Z, Gao W, Zhang G. De novo design and synthesis of dipyridopurinone derivatives as visible-light photocatalysts in productive guanylation reactions. Chem Sci 2021; 12:15988-15997. [PMID: 35024122 PMCID: PMC8672711 DOI: 10.1039/d1sc05294b] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2021] [Accepted: 11/12/2021] [Indexed: 02/05/2023] Open
Abstract
Described here is the de novo design and synthesis of a series of 6H-dipyrido[1,2-e:2',1'-i]purin-6-ones (DPs) as a new class of visible-light photoredox catalysts (PCs). The synthesized DP1-5 showed their λ Abs(max) values in 433-477 nm, excited state redox potentials in 1.15-0.69 eV and -1.41 to -1.77 eV (vs. SCE), respectively. As a representative, DP4 enables the productive guanylation of various amines, including 1°, 2°, and 3°-alkyl primary amines, secondary amines, aryl and heteroaryl amines, amino-nitrile, amino acids and peptides as well as propynylamines and α-amino esters giving diversities in biologically important guanidines and cyclic guanidines. The photocatalytic efficacy of DP4 in the guanylation overmatched commonly used Ir and Ru polypyridyl complexes, and some organic PCs. Other salient merits of this method include broad substrate scope and functional group tolerance, gram-scale synthesis, and versatile late-stage derivatizations that led to a derivative 81 exhibiting 60-fold better anticancer activity against Ramos cells with the IC50 of 0.086 μM than that of clinical drug ibrutinib (5.1 μM).
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Affiliation(s)
- Yameng Wan
- Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Henan Key Laboratory of Organic Functional Molecules and Drug Innovation, NMPA Key Laboratory for Research and Evaluation of Innovative Drug, School of Chemistry and Chemical Engineering, Henan Normal University 46 East of Construction Road Xinxiang Henan 453007 China
| | - Hao Wu
- Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Henan Key Laboratory of Organic Functional Molecules and Drug Innovation, NMPA Key Laboratory for Research and Evaluation of Innovative Drug, School of Chemistry and Chemical Engineering, Henan Normal University 46 East of Construction Road Xinxiang Henan 453007 China
| | - Nana Ma
- Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Henan Key Laboratory of Organic Functional Molecules and Drug Innovation, NMPA Key Laboratory for Research and Evaluation of Innovative Drug, School of Chemistry and Chemical Engineering, Henan Normal University 46 East of Construction Road Xinxiang Henan 453007 China
| | - Jie Zhao
- Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Henan Key Laboratory of Organic Functional Molecules and Drug Innovation, NMPA Key Laboratory for Research and Evaluation of Innovative Drug, School of Chemistry and Chemical Engineering, Henan Normal University 46 East of Construction Road Xinxiang Henan 453007 China
| | - Zhiguo Zhang
- Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Henan Key Laboratory of Organic Functional Molecules and Drug Innovation, NMPA Key Laboratory for Research and Evaluation of Innovative Drug, School of Chemistry and Chemical Engineering, Henan Normal University 46 East of Construction Road Xinxiang Henan 453007 China
| | - Wenjing Gao
- Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Henan Key Laboratory of Organic Functional Molecules and Drug Innovation, NMPA Key Laboratory for Research and Evaluation of Innovative Drug, School of Chemistry and Chemical Engineering, Henan Normal University 46 East of Construction Road Xinxiang Henan 453007 China
| | - Guisheng Zhang
- Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Henan Key Laboratory of Organic Functional Molecules and Drug Innovation, NMPA Key Laboratory for Research and Evaluation of Innovative Drug, School of Chemistry and Chemical Engineering, Henan Normal University 46 East of Construction Road Xinxiang Henan 453007 China
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7
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Pattarawarapan M, Wiriya N, Hongsibsong S, Phakhodee W. Divergent Synthesis of Methylisatoid and Tryptanthrin Derivatives by Ph 3P-I 2-Mediated Reaction of Isatins with and without Alcohols. J Org Chem 2020; 85:15743-15751. [PMID: 33226811 DOI: 10.1021/acs.joc.0c02403] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
A novel phosphonium-mediated reaction of isatins is described. In the presence of alcohol, the reaction proceeds to furnish C-12 modified tryptanthrin derivatives. Without alcohol, self-dimerization of isatins gives rise to tryptanthrin and its analogs. This divergent and step-economic approach provides a facile access to diverse indoloquinazoline structures including the natural alkaloids, methylisatoid and cephalanthrin B, in high yields from simple precursors under mild and metal-free reaction conditions.
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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
| | - Nittaya Wiriya
- Department of Chemistry, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand
| | - Surat Hongsibsong
- School of Health Science Research, Research Institute for Health 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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8
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Saetan T, Sukwattanasinitt M, Wacharasindhu S. A Mild Photocatalytic Synthesis of Guanidine from Thiourea under Visible Light. Org Lett 2020; 22:7864-7869. [PMID: 32986446 DOI: 10.1021/acs.orglett.0c02770] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
In this work, we developed the catalytic guanylation of thiourea using Ru(bpy)3Cl2 as a photocatalyst under irradiation by visible light. The conversion of various thioureas to the corresponding guanidines was achieved using 1-5 mol % of photocatalyst in a mixture of water and ethanol at room temperature. Key benefits of this reaction include the use of photoredox catalyst, low-toxicity solvents/base, ambient temperature, and an open-flask environment.
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Affiliation(s)
- Trin Saetan
- Nanotec-CU Center of Excellence on Food and Agriculture, Department of Chemistry, Faculty of Science, Chulalongkorn University, Bangkok 10330, Thailand
| | - Mongkol Sukwattanasinitt
- Nanotec-CU Center of Excellence on Food and Agriculture, Department of Chemistry, Faculty of Science, Chulalongkorn University, Bangkok 10330, Thailand
| | - Sumrit Wacharasindhu
- Nanotec-CU Center of Excellence on Food and Agriculture, Department of Chemistry, Faculty of Science, Chulalongkorn University, Bangkok 10330, Thailand.,Green Chemistry for Fine Chemical Productions STAR, Department of Chemistry, Faculty of Science, Chulalongkorn University, Bangkok10330, Thailand
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9
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Berlinck RGS, Bernardi DI, Fill T, Fernandes AAG, Jurberg ID. The chemistry and biology of guanidine secondary metabolites. Nat Prod Rep 2020; 38:586-667. [PMID: 33021301 DOI: 10.1039/d0np00051e] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Covering: 2017-2019Guanidine natural products isolated from microorganisms, marine invertebrates and terrestrial plants, amphibians and spiders, represented by non-ribosomal peptides, guanidine-bearing polyketides, alkaloids, terpenoids and shikimic acid derived, are the subject of this review. The topics include the discovery of new metabolites, total synthesis of natural guanidine compounds, biological activity and mechanism-of-action, biosynthesis and ecological functions.
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Affiliation(s)
- Roberto G S Berlinck
- Instituto de Química de São Carlos, Universidade de São Paulo, CP 780, CEP 13560-970, São Carlos, SP, Brazil.
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10
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Shekharappa, Roopesh Kumar L, Srinivasulu C, Sureshbabu VV. Dehydration of Chiral α-Amides to Chiral α-Nitriles Under the Appel Reaction Conditions. Int J Pept Res Ther 2020. [DOI: 10.1007/s10989-020-10101-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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11
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Srisa J, Tankam T, Sukwattanasinitt M, Wacharasindhu S. Micelle-Enabled One-Pot Guanidine Synthesis in Water Directly from Isothiocyanate using Hypervalent Iodine(III) Reagents under Mild Conditions. Chem Asian J 2019; 14:3335-3343. [PMID: 31397526 DOI: 10.1002/asia.201900982] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2019] [Indexed: 02/06/2023]
Abstract
In this work, we developed a one-pot synthesis of guanidine directly from isothiocyanate using DIB (diacetoxyiodobenzene) as a desulfurizing agent under micellar conditions in water. Our optimization study revealed that the use of 1 % TPGS-750-M as a surfactant with NaOH as an additive base at room temperature can convert a variety of isothiocyanates and amines into corresponding guanidines in excellent yields (69-95 %). This synthetic process in water can be applied to prepare guanidine at gram-scale quantity. Our aqueous micellar medium also demonstrated high reusability as the reaction can be performed for several cycles without losing its efficiency. The reaction is metal-free, utilizes water as solvent and practical (room temperature and open flask).
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Affiliation(s)
- Jakkrit Srisa
- Department of Chemistry, Faculty of Science, Chulalongkorn University, Bangkok, 10330, Thailand.,Center of Excellence on Petrochemical and Materials Technology, Chulalongkorn University, Bangkok, Thailand
| | - Theeranon Tankam
- Department of Chemistry, Faculty of Science, Chulalongkorn University, Bangkok, 10330, Thailand
| | - Mongkol Sukwattanasinitt
- Department of Chemistry, Faculty of Science, Chulalongkorn University, Bangkok, 10330, Thailand.,Nanotec-CU Center of Excellence on Food and Agriculture, Department of Chemistry, Faculty of Science, Chulalongkorn University, Bangkok, 10330, Thailand
| | - Sumrit Wacharasindhu
- Center of Excellence on Petrochemical and Materials Technology, Chulalongkorn University, Bangkok, Thailand.,Nanotec-CU Center of Excellence on Food and Agriculture, Department of Chemistry, Faculty of Science, Chulalongkorn University, Bangkok, 10330, Thailand
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12
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Kanyiva KS, Tane M, Shibata T. Iodine-Catalyzed Synthesis of Chiral 4-Imidazolidinones Using α-Amino Acid Derivatives via Dehydrogenative N–H/C(sp3)–H Coupling. J Org Chem 2019; 84:12773-12783. [DOI: 10.1021/acs.joc.9b01154] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Kyalo Stephen Kanyiva
- Global Center of Science and Engineering, School of Advanced Science and Engineering, Waseda University, 3-4-1 Okubo, Shinjuku, Tokyo 169-8555, Japan
| | - Marina Tane
- Department of Chemistry and Biochemistry, School of Advanced Science and Engineering, Waseda University, 3-4-1 Okubo, Shinjuku, Tokyo 169-8555, Japan
| | - Takanori Shibata
- Department of Chemistry and Biochemistry, School of Advanced Science and Engineering, Waseda University, 3-4-1 Okubo, Shinjuku, Tokyo 169-8555, Japan
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13
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Rong HJ, Yang CF, Chen T, Xu ZG, Su TD, Wang YQ, Ning BK. Iodine-catalyzed guanylation of amines withN,N′-di-Boc-thiourea. Org Biomol Chem 2019; 17:9280-9283. [DOI: 10.1039/c9ob02014d] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Iodine-catalyzed guanylation of amines withN,N′-di-Boc-thiourea is especially useful for both electronically and sterically deactivated primary anilines.
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Affiliation(s)
- Hao-Jie Rong
- Modern Chemistry Research Institute of Xi'an
- Xi'an 710065
- China
- Department of Chemistry & Materials Science
- Northwest University
| | - Cui-Feng Yang
- Modern Chemistry Research Institute of Xi'an
- Xi'an 710065
- China
| | - Tao Chen
- Modern Chemistry Research Institute of Xi'an
- Xi'an 710065
- China
| | - Ze-Gang Xu
- Modern Chemistry Research Institute of Xi'an
- Xi'an 710065
- China
| | - Tian-Duo Su
- Modern Chemistry Research Institute of Xi'an
- Xi'an 710065
- China
| | - Yong-Qiang Wang
- Department of Chemistry & Materials Science
- Northwest University
- Xi'an 710069
- China
| | - Bin-Ke Ning
- Modern Chemistry Research Institute of Xi'an
- Xi'an 710065
- China
- State Key Laboratory of Fluorine & Nitrogen Chemicals
- Xi'an 710065
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14
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Guo W, Zhao M, Tan W, Zheng L, Tao K, Liu L, Wang X, Chen D, Fan X. Visible Light-Promoted Three-Component Tandem Annulation for the Synthesis of 2-Iminothiazolidin-4-ones. J Org Chem 2018; 83:1402-1413. [DOI: 10.1021/acs.joc.7b02940] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Wei Guo
- Key Laboratory
of Organo-pharmaceutical
Chemistry of Jiangxi Province, Gannan Normal University, Ganzhou 341000, China
| | - Mingming Zhao
- Key Laboratory
of Organo-pharmaceutical
Chemistry of Jiangxi Province, Gannan Normal University, Ganzhou 341000, China
| | - Wen Tan
- Key Laboratory
of Organo-pharmaceutical
Chemistry of Jiangxi Province, Gannan Normal University, Ganzhou 341000, China
| | - Lvyin Zheng
- Key Laboratory
of Organo-pharmaceutical
Chemistry of Jiangxi Province, Gannan Normal University, Ganzhou 341000, China
| | - Kailiang Tao
- Key Laboratory
of Organo-pharmaceutical
Chemistry of Jiangxi Province, Gannan Normal University, Ganzhou 341000, China
| | - Lingxiu Liu
- Key Laboratory
of Organo-pharmaceutical
Chemistry of Jiangxi Province, Gannan Normal University, Ganzhou 341000, China
| | - Xinyu Wang
- Key Laboratory
of Organo-pharmaceutical
Chemistry of Jiangxi Province, Gannan Normal University, Ganzhou 341000, China
| | - Deliang Chen
- Key Laboratory
of Organo-pharmaceutical
Chemistry of Jiangxi Province, Gannan Normal University, Ganzhou 341000, China
| | - Xiaolin Fan
- Key Laboratory
of Organo-pharmaceutical
Chemistry of Jiangxi Province, Gannan Normal University, Ganzhou 341000, China
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15
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Phakhodee W, Duangkamol C, Wiriya N, Pattarawarapan M. A convenient one-pot synthesis of N-substituted amidoximes and their application toward 1,2,4-oxadiazol-5-ones. RSC Adv 2018; 8:38281-38288. [PMID: 35559089 PMCID: PMC9090163 DOI: 10.1039/c8ra08207c] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2018] [Accepted: 11/01/2018] [Indexed: 11/25/2022] Open
Abstract
The first direct one-pot approach for the synthesis of N-substituted amidoximes from secondary amides or the intermediate amides has been developed. Through the Ph3P–I2-mediated dehydrative condensation, a variety of N-aryl and N-alkyl amidoximes (R1(C
Created by potrace 1.16, written by Peter Selinger 2001-2019
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NOH)NHR2, where R1 or R2 = aryl, alkyl, or benzyl) were readily afforded under mild conditions and short reaction times. The synthetic application of the obtained amidoximes has also been demonstrated through the formation of 1,2,4-oxadiazolones via base-mediated carbonylative cyclization with 1,1′-carbonyldiimidazole. Ph3P–I2 mediated one-pot synthesis of N-substituted amidoximes via imidoyl iodide was developed. The synthesis of 1,2,4-oxadiazol-5-ones was also demonstrated.![]()
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Affiliation(s)
- Wong Phakhodee
- Department of Chemistry
- Faculty of Science
- Chiang Mai University
- Chiang Mai 50200
- Thailand
| | - Chuthamat Duangkamol
- Department of Chemistry
- Faculty of Science
- Chiang Mai University
- Chiang Mai 50200
- Thailand
| | - Nitaya Wiriya
- Department of Chemistry
- Faculty of Science
- Chiang Mai University
- Chiang Mai 50200
- Thailand
| | - Mookda Pattarawarapan
- Department of Chemistry
- Faculty of Science
- Chiang Mai University
- Chiang Mai 50200
- Thailand
| |
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