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Rong L, Ma J, Lai C, Han S, Liao J, Liu C, Li X, Huang J. Additive-Free Construction of Tetrahydropyrimidine Skeleton by using 1,3,5-Triazinane as Four-Atom Synthon. J Org Chem 2024; 89:9496-9501. [PMID: 38965934 DOI: 10.1021/acs.joc.4c00801] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/06/2024]
Abstract
Herein, an unprecedented [4 + 2] cycloaddition of enaminone with 1,3,5-triazinane has been developed. The representative semihydrogenated aromatic heterocycle 1,2,3,4-tetrahydropyrimidines have been synthesized with a broad substrate scope, demonstrating potential antitumor activity. This approach has been smoothly conducted under additive-free and environmentally friendly conditions that are compatible with various functional groups. Furthermore, the condition optimization process reveals that the tetrahydropyrimidine product is regulated via the reaction temperature.
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Affiliation(s)
- Lanlan Rong
- Key Laboratory of Prevention and Treatment of Cardiovascular and Cerebrovascular Diseases of Ministry of Education and School of Pharmacy, Gannan Medical University, Ganzhou 341000, P. R. China
| | - Jingwen Ma
- Key Laboratory of Prevention and Treatment of Cardiovascular and Cerebrovascular Diseases of Ministry of Education and School of Pharmacy, Gannan Medical University, Ganzhou 341000, P. R. China
| | - Chenru Lai
- Key Laboratory of Prevention and Treatment of Cardiovascular and Cerebrovascular Diseases of Ministry of Education and School of Pharmacy, Gannan Medical University, Ganzhou 341000, P. R. China
| | - Shihong Han
- Key Laboratory of Prevention and Treatment of Cardiovascular and Cerebrovascular Diseases of Ministry of Education and School of Pharmacy, Gannan Medical University, Ganzhou 341000, P. R. China
| | - Junzhao Liao
- Key Laboratory of Prevention and Treatment of Cardiovascular and Cerebrovascular Diseases of Ministry of Education and School of Pharmacy, Gannan Medical University, Ganzhou 341000, P. R. China
| | - Chenwu Liu
- Key Laboratory of Prevention and Treatment of Cardiovascular and Cerebrovascular Diseases of Ministry of Education and School of Pharmacy, Gannan Medical University, Ganzhou 341000, P. R. China
| | - Xiaoning Li
- Key Laboratory of Prevention and Treatment of Cardiovascular and Cerebrovascular Diseases of Ministry of Education and School of Pharmacy, Gannan Medical University, Ganzhou 341000, P. R. China
| | - Jiuzhong Huang
- Key Laboratory of Prevention and Treatment of Cardiovascular and Cerebrovascular Diseases of Ministry of Education and School of Pharmacy, Gannan Medical University, Ganzhou 341000, P. R. China
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Xie W, Wang C, Xu J. Reaction of 1,3,5-Triazinanes with Phosphoryl Diazomethanes: Access to 5-Phosphoryl-1,2,3,4-tetrahydropyrimidines. Org Lett 2024. [PMID: 38630983 DOI: 10.1021/acs.orglett.4c00881] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/19/2024]
Abstract
Conversion of 1,3,5-triazinanes into 5-phosporyl-1,2,3,4-tetrahydropyrimidines is achieved efficiently through the microwave-assisted reaction with phosphoryl diazomethanes. Both trialkyl and triaryl 1,3,5-triazinanes were converted by diazomethyldiarylphosphine oxides, dialkyl diazomethylphosphonates, and alkyl diazomethyl(aryl)phosphinates and functionalized simultaneously in good to excellent yields. The reaction is a sequence of 1,3,5-triazinane fragmentation, tandem nucleophilic addition of the generated formaldimines and phosphoryl diazomethanes, and final N,N-acetalization.
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Affiliation(s)
- Wenlai Xie
- State Key Laboratory of Chemical Resource Engineering, Department of Organic Chemistry, College of Chemistry, Beijing University of Chemical Technology, Beijing 100029, People's Republic of China
| | - Chengzhuo Wang
- State Key Laboratory of Chemical Resource Engineering, Department of Organic Chemistry, College of Chemistry, Beijing University of Chemical Technology, Beijing 100029, People's Republic of China
| | - Jiaxi Xu
- State Key Laboratory of Chemical Resource Engineering, Department of Organic Chemistry, College of Chemistry, Beijing University of Chemical Technology, Beijing 100029, People's Republic of China
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Dong ZB, Gong Z, Dou Q, Cheng B, Wang T. A decade update on the application of β-oxodithioesters in heterocyclic synthesis. Org Biomol Chem 2023; 21:6806-6829. [PMID: 37555699 DOI: 10.1039/d3ob00601h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/10/2023]
Abstract
The diverse synthesis of heterocyclic compounds has always been one of the popular subjects of organic chemistry. To this end, great efforts have been devoted to developing new reagents and establishing new strategies and methods concerning efficiency, selectivity and sustainability. β-Oxodithioesters and their enol tautomers (i.e., α-enolic dithioesters), as a class of simple and readily accessible sulfur-containing synthons, have been widely applied in the construction of various five- and six-membered heterocycles (e.g., thiophenes, thiopyrans, thiazoles, pyridines and quinolines) and other useful open-chain frameworks. Due to their unique chemical structures, β-oxodithioesters bear multiple reaction sites, which enable them to participate in two-component or multicomponent reactions to construct various heterocyclic compounds. In the past decade, the application of β-oxodithioesters in the synthesis of heterocycles has made remarkable progress. Herein, an update on the recent advances in the application of β-oxodithioesters in the synthesis of heterocycles during the period from 2013 to 2023/06 is provided. According to the different types of rings concerning heteroatoms in products, this review is divided into five sections under discussion including (i) synthesis of sulfur-containing heterocycles, (ii) synthesis of sulfur and nitrogen-containing heterocycles, (iii) synthesis of nitrogen-containing heterocycles, (iv) synthesis of nitrogen and oxygen-containing heterocycles, and (v) modification to other open-chain frameworks.
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Affiliation(s)
- Zhi-Bing Dong
- School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Wuhan 430205, China.
| | - Zhiying Gong
- School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Wuhan 430205, China.
- Institute of Marine Biomedicine, Shenzhen Polytechnic, Shenzhen 518055, China.
| | - Qian Dou
- Key Laboratory of Science and Technology on Wear and Protection of Materials, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- Institute of Marine Biomedicine, Shenzhen Polytechnic, Shenzhen 518055, China.
| | - Bin Cheng
- Institute of Marine Biomedicine, Shenzhen Polytechnic, Shenzhen 518055, China.
| | - Taimin Wang
- Institute of Marine Biomedicine, Shenzhen Polytechnic, Shenzhen 518055, China.
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Tang S, Cheng Z, Zhang P, Shao Y, Sun J. Access to Chiral Tetrahydroquinazolines/1,3-Benzoxazines via Iridium-Catalyzed Asymmetric [4 + 2] Cycloaddition. Org Lett 2023; 25:3639-3643. [PMID: 37191318 DOI: 10.1021/acs.orglett.3c01004] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/17/2023]
Abstract
An iridium-catalyzed asymmetric [4 + 2] cycloaddition of 1,3,5-triazinanes with 2-(1-hydroxyallyl)anilines/2-(1-hydroxyallyl)phenols has been developed, providing a straightforward and efficient approach to a wide range of tetrahydroquinazolines in good yields and excellent enantioselectivities (up to >99% ee). Typically, chiral 1,3-benzoxazines, which are challenging substrates in asymmetric [4 + 2] cycloaddition, could be obtained in excellent enantioselectivities via this protocol.
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Affiliation(s)
- Shengbiao Tang
- Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology, Advanced Catalysis and Green Manufacturing Collaborative Innovation Center, School of Petrochemical Engineering, Changzhou University, Changzhou 213164, China
| | - Zhangru Cheng
- Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology, Advanced Catalysis and Green Manufacturing Collaborative Innovation Center, School of Petrochemical Engineering, Changzhou University, Changzhou 213164, China
| | - Peng Zhang
- Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology, Advanced Catalysis and Green Manufacturing Collaborative Innovation Center, School of Petrochemical Engineering, Changzhou University, Changzhou 213164, China
| | - Ying Shao
- Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology, Advanced Catalysis and Green Manufacturing Collaborative Innovation Center, School of Petrochemical Engineering, Changzhou University, Changzhou 213164, China
| | - Jiangtao Sun
- Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology, Advanced Catalysis and Green Manufacturing Collaborative Innovation Center, School of Petrochemical Engineering, Changzhou University, Changzhou 213164, China
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Zheng YN, Cai XE, Wu HL, Zhou Y, Tian WC, Ruan Y, Liu H, Wei WT. Metal- and Base-Free Radical Cascade Cyclization/Hydrolysis of CN-Containing 1,6-Enynes with Ethers to Access Polyheterocycles. Chem Asian J 2023; 18:e202201149. [PMID: 36550634 DOI: 10.1002/asia.202201149] [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: 11/14/2022] [Revised: 12/21/2022] [Accepted: 12/22/2022] [Indexed: 12/24/2022]
Abstract
A convenient and straightforward approach for the radical cascade cyclization/hydrolysis of CN-containing 1,6-enynes with simple ethers under metal- and base-free conditions is described. This strategy provides a variety of valuable ethers-substituted polyheterocycles via the construction of three C-C bonds, one C=O bond, and two new six-membered rings within a single procedure. The resulting products can smoothly undergo follow-up conversions to various useful scaffolds. The methodology shows excellent functional group tolerance, high step- and atom- economy, and mild reaction conditions, which can be further scaled up to gram quantity in a satisfactory yield.
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Affiliation(s)
- Yan-Nan Zheng
- School of Materials Science and Chemical Engineering, Ningbo University, 315211, Ningbo, Zhejiang, P. R. China
| | - Xue-Er Cai
- School of Materials Science and Chemical Engineering, Ningbo University, 315211, Ningbo, Zhejiang, P. R. China
| | - Hong-Li Wu
- School of Materials Science and Chemical Engineering, Ningbo University, 315211, Ningbo, Zhejiang, P. R. China
| | - Yu Zhou
- School of Materials Science and Chemical Engineering, Ningbo University, 315211, Ningbo, Zhejiang, P. R. China
| | - Wen-Chan Tian
- School of Materials Science and Chemical Engineering, Ningbo University, 315211, Ningbo, Zhejiang, P. R. China
| | - Yiping Ruan
- School of Materials Science and Chemical Engineering, Ningbo University, 315211, Ningbo, Zhejiang, P. R. China
| | - Hongxin Liu
- College of Chemistry and Materials Engineering, Wenzhou University, 325035, Wenzhou, P. R. China
| | - Wen-Ting Wei
- School of Materials Science and Chemical Engineering, Ningbo University, 315211, Ningbo, Zhejiang, P. R. China
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Zhu Y, Yang L, Zhang X, Xu W, He J, Wang H, Lang M, Peng S. Copper-Catalyzed Cycloadditions of Diazo Compounds with Imidazolidines/Hexahydropyrimidines for the Syntheses of N-Heterocycles. Org Lett 2022; 24:6443-6448. [PMID: 36017905 DOI: 10.1021/acs.orglett.2c02561] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Reported herein are the unprecedented copper-catalyzed formal [n + 1]/[n + 3] (n = 5, 6) cycloadditions of diazo compounds with imidazolidines/hexahydropyrimidines, thus providing a general, economical, and efficient route to construct different sized (six- to nine-membered) diaza-heterocycles in moderate to excellent yields under mild reaction conditions. This strategy features the use of copper catalyst to accomplish such diverse annulations and the utilization of imidazolidines/hexahydropyrimidines as stable 1,5-/1,6-dipoles.
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Affiliation(s)
- Yuqi Zhu
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen 529020, P. R. China
| | - Liangliang Yang
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen 529020, P. R. China
| | - Xue Zhang
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen 529020, P. R. China
| | - Wendi Xu
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen 529020, P. R. China
| | - Jieyin He
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen 529020, P. R. China
| | - Haiyang Wang
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen 529020, P. R. China
| | - Ming Lang
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen 529020, P. R. China
| | - Shiyong Peng
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen 529020, P. R. China
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