1
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Sarkar B, Hajra A. Hydro-phosphorothiolation of Styrene and Cyclopropane with S-Hydrogen Phosphorothioates under Ambient Conditions. Org Lett 2024; 26:5141-5145. [PMID: 38848455 DOI: 10.1021/acs.orglett.4c01586] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/09/2024]
Abstract
A metal-free hexafluoroisopropanol-mediated hydro-phosphorothiolation of styrenes and donor-acceptor cyclopropanes with S-hydrogen phosphorothioates in a Markovnikov fashion has been developed under ambient reaction conditions to afford a library of S-alkyl phosphorothioates. Notably, this strategy provides a simple and efficient way to produce biologically significant kitazin and iprobenfos derivatives. Mechanistic studies disclose that the reaction proceeds through a carbocation intermediate.
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Affiliation(s)
- Biswajit Sarkar
- Department of Chemistry, Visva-Bharati (A Central University), Santiniketan 731235, India
| | - Alakananda Hajra
- Department of Chemistry, Visva-Bharati (A Central University), Santiniketan 731235, India
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2
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Zhang P, Li W, Yang S, Qu W, Wang L, Lin J, Gao X. Construction of Phosphorothiolated 2-Pyrrolidinones via Photoredox/Copper-Catalyzed Cascade Radical Cyclization/Phosphorothiolation. J Org Chem 2024; 89:4947-4957. [PMID: 38498700 DOI: 10.1021/acs.joc.4c00159] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/20/2024]
Abstract
A photoredox/copper-catalyzed cascade radical cyclization/phosphorothiolation reaction of N-allylbromoacetamides and P(O)SH compounds has been established. A broad range of novel nonfluorine- or difluoro-substituted 2-pyrrolidinones bearing the C(sp3)-SP(O)(OR)2 moiety can be conveniently constructed in moderate to good yields under mild conditions. Importantly, most of the tested phosphorothiolated 2-pyrrolidinones showed potent inhibitory effects toward both AChE and BChE.
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Affiliation(s)
- Pengbo Zhang
- School of Public Health, Xinxiang Medical University, Xinxiang 453003, China
| | - Wenwu Li
- School of Public Health, Xinxiang Medical University, Xinxiang 453003, China
| | - Shuai Yang
- School of Public Health, Xinxiang Medical University, Xinxiang 453003, China
| | - Weilong Qu
- School of Public Health, Xinxiang Medical University, Xinxiang 453003, China
| | - Longyu Wang
- School of Public Health, Xinxiang Medical University, Xinxiang 453003, China
| | - Jinming Lin
- School of Public Health, Xinxiang Medical University, Xinxiang 453003, China
| | - Xia Gao
- School of Public Health, Xinxiang Medical University, Xinxiang 453003, China
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3
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Gan XC, Zhang B, Dao N, Bi C, Pokle M, Kan L, Collins MR, Tyrol CC, Bolduc PN, Nicastri M, Kawamata Y, Baran PS, Shenvi R. Carbon quaternization of redox active esters and olefins by decarboxylative coupling. Science 2024; 384:113-118. [PMID: 38574151 DOI: 10.1126/science.adn5619] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2023] [Accepted: 02/28/2024] [Indexed: 04/06/2024]
Abstract
The synthesis of quaternary carbons often requires numerous steps and complex conditions or harsh reagents that act on heavily engineered substrates. This is largely a consequence of conventional polar-bond retrosynthetic disconnections that in turn require multiple functional group interconversions, redox manipulations, and protecting group chemistry. Here, we report a simple catalyst and reductant combination that converts two types of feedstock chemicals, carboxylic acids and olefins, into tetrasubstituted carbons through quaternization of radical intermediates. An iron porphyrin catalyst activates each substrate by electron transfer or hydrogen atom transfer, and then combines the fragments using a bimolecular homolytic substitution (SH2) reaction. This cross-coupling reduces the synthetic burden to procure numerous quaternary carbon---containing products from simple chemical feedstocks.
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Affiliation(s)
- Xu-Cheng Gan
- Department of Chemistry, Scripps Research, La Jolla, CA 92037, USA
| | - Benxiang Zhang
- Department of Chemistry, Scripps Research, La Jolla, CA 92037, USA
| | - Nathan Dao
- Department of Chemistry, Scripps Research, La Jolla, CA 92037, USA
| | - Cheng Bi
- Department of Chemistry, Scripps Research, La Jolla, CA 92037, USA
| | - Maithili Pokle
- Department of Chemistry, Scripps Research, La Jolla, CA 92037, USA
| | - Liyan Kan
- Department of Chemistry, Scripps Research, La Jolla, CA 92037, USA
- College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
| | - Michael R Collins
- Oncology Medicinal Chemistry Department, Pfizer Pharmaceuticals, San Diego, CA 92122, USA
| | | | | | | | - Yu Kawamata
- Department of Chemistry, Scripps Research, La Jolla, CA 92037, USA
| | - Phil S Baran
- Department of Chemistry, Scripps Research, La Jolla, CA 92037, USA
| | - Ryan Shenvi
- Department of Chemistry, Scripps Research, La Jolla, CA 92037, USA
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4
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Zhang Y, Guo Y, Zhao Y, Cao S. NaOAc-Assisted Aerobic Oxidation Protocol for the Synthesis of Pentacoordinate Chalcogenyl Spirophosphoranes with P-Se/P-S Bonds under Open Air. J Org Chem 2024; 89:3259-3270. [PMID: 38380616 DOI: 10.1021/acs.joc.3c02716] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/22/2024]
Abstract
The NaOAc-assisted aerobic oxidation reaction of pentacoordinate hydrospirophosphoranes and dichalcogenyl compounds with open air as a green oxidant has been developed under mild conditions. A series of novel pentacoordinate spirophosphoranes with P-Se/P-S bonds were synthesized in excellent yields. The reaction mechanism was determined by 31P nuclear magnetic resonance tracing experiments, high-resolution mass spectrometry tracing experiments, and X-ray diffraction analysis. The method features a broad substrate scope, good functional group tolerance, and a high degree of atomic utilization and is meaningful for the synthesis of bioactive chalcogenphosphate compounds with chalcogen and phosphorus moieties.
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Affiliation(s)
- Yang Zhang
- Key Laboratory of Chemical Biology and Organic Chemistry of Henan Province, College of Chemistry, Zhengzhou University, Zhengzhou 450052, China
| | - Yanchun Guo
- Key Laboratory of Chemical Biology and Organic Chemistry of Henan Province, College of Chemistry, Zhengzhou University, Zhengzhou 450052, China
| | - Yufen Zhao
- Key Laboratory of Chemical Biology and Organic Chemistry of Henan Province, College of Chemistry, Zhengzhou University, Zhengzhou 450052, China
- Institute of Drug Discovery Technology, Ningbo University, Ningbo 315211, China
| | - Shuxia Cao
- Key Laboratory of Chemical Biology and Organic Chemistry of Henan Province, College of Chemistry, Zhengzhou University, Zhengzhou 450052, China
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5
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Shi S, Chen H, Zhao M, Yang S, Li P, Wang X, Zhu J, Fang Q, Xu W, Tang G, Gao Y. Copper-Catalyzed Fluoroalkylphosphorothiolation of Alkynes for the Synthesis of ( E)-β-Fluoroalkyl Vinyl Phosphorothioates. Org Lett 2023; 25:8296-8301. [PMID: 37947423 DOI: 10.1021/acs.orglett.3c03349] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2023]
Abstract
A convenient copper-catalyzed three-component radical-based fluoroalkylphosphorothiolation of terminal alkynes with (iPrO)2P(O)SH and fluoroalkylation reagent for the synthesis of a variety of (E)-β-fluoroalkyl vinyl phosphorothioates with excellent regioselectivity and stereoselectivity has been developed. All the starting materials used in this reaction are highly stable and readily available. Thus, this process features with mild reaction conditions, simple operation and good functional group tolerance (>40 examples). Furthermore, this modular reaction system allows the late-stage functionalization of bioactive molecules.
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Affiliation(s)
- Shanshan Shi
- Department of Chemistry and Chemical Engineering, Hefei Normal University, Hefei 230061, Anhui, China
| | - Hu Chen
- Department of Chemistry and Chemical Engineering, Hefei Normal University, Hefei 230061, Anhui, China
| | - Ming Zhao
- Department of Chemistry and Chemical Engineering, Hefei Normal University, Hefei 230061, Anhui, China
| | - Shiwei Yang
- Department of Chemistry and Chemical Engineering, Hefei Normal University, Hefei 230061, Anhui, China
| | - Pan Li
- Department of Chemistry and Chemical Engineering, Hefei Normal University, Hefei 230061, Anhui, China
| | - Xiaohong Wang
- Department of Chemistry and Chemical Engineering, Hefei Normal University, Hefei 230061, Anhui, China
| | - Jinmiao Zhu
- Department of Chemistry and Chemical Engineering, Hefei Normal University, Hefei 230061, Anhui, China
| | - Qi Fang
- Department of Chemistry and Chemical Engineering, Hefei Normal University, Hefei 230061, Anhui, China
| | - Wenbiao Xu
- Department of Chemistry and Chemical Engineering, Hefei Normal University, Hefei 230061, Anhui, China
| | - Guo Tang
- Department of Chemistry, College of Chemistry and Chemical Engineering, and the Key Laboratory for Chemical Biology of Fujian Province, Xiamen University, Xiamen 361005, Fujian, China
| | - Yuzhen Gao
- Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, 155 Yangqiao Road West, Fuzhou 350002, China
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6
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Jiang S, Du S, Bai J, Chen X, Liang M, Lin S, Luo MJ, Song XR, Xiao Q. Cascade Cyclization of 1,5-Diynols and (RO) 2P(O)SH to Construct Benzo[ b]fluorenyl S-Alkyl Phosphorothioates under Catalyst-Free Conditions. J Org Chem 2023; 88:14571-14586. [PMID: 37789588 DOI: 10.1021/acs.joc.3c01596] [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
An efficient and practical cascade cyclization of 1,5-diynols with (RO)2P(O)SH as the acid promoter and nucleophile under mild conditions was developed. A variety of highly substituted benzo[b]fluorenyl-containing S-alkyl phosphorothioates were successfully constructed in moderate to excellent yields. Furthermore, this protocol exhibited good functional group tolerance, a broad substrate scope, and potential practical applications, with water as the only byproduct. The reaction proceeded with allenyl thiophosphate as a key intermediate, followed by a Schmittel-type cyclization process to produce the target product.
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Affiliation(s)
- Shimin Jiang
- Institute of Organic Chemistry, Jiangxi Science &Technology Normal University, Key Laboratory of Organic Chemistry, Jiangxi Province, Nanchang 330013, China
| | - Sha Du
- Institute of Organic Chemistry, Jiangxi Science &Technology Normal University, Key Laboratory of Organic Chemistry, Jiangxi Province, Nanchang 330013, China
| | - Jiang Bai
- Institute of Organic Chemistry, Jiangxi Science &Technology Normal University, Key Laboratory of Organic Chemistry, Jiangxi Province, Nanchang 330013, China
| | - Xi Chen
- Institute of Organic Chemistry, Jiangxi Science &Technology Normal University, Key Laboratory of Organic Chemistry, Jiangxi Province, Nanchang 330013, China
| | - Meng Liang
- Institute of Organic Chemistry, Jiangxi Science &Technology Normal University, Key Laboratory of Organic Chemistry, Jiangxi Province, Nanchang 330013, China
| | - Shihong Lin
- Institute of Organic Chemistry, Jiangxi Science &Technology Normal University, Key Laboratory of Organic Chemistry, Jiangxi Province, Nanchang 330013, China
| | - Mu-Jia Luo
- Institute of Organic Chemistry, Jiangxi Science &Technology Normal University, Key Laboratory of Organic Chemistry, Jiangxi Province, Nanchang 330013, China
| | - Xian-Rong Song
- Institute of Organic Chemistry, Jiangxi Science &Technology Normal University, Key Laboratory of Organic Chemistry, Jiangxi Province, Nanchang 330013, China
| | - Qiang Xiao
- Institute of Organic Chemistry, Jiangxi Science &Technology Normal University, Key Laboratory of Organic Chemistry, Jiangxi Province, Nanchang 330013, China
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7
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Guo Y, Wang X, Li C, Su J, Xu J, Song Q. Decarboxylation of β-boryl NHPI esters enables radical 1,2-boron shift for the assembly of versatile organoborons. Nat Commun 2023; 14:5693. [PMID: 37709736 PMCID: PMC10502150 DOI: 10.1038/s41467-023-41254-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2023] [Accepted: 08/28/2023] [Indexed: 09/16/2023] Open
Abstract
In recent years, numerous 1,2-R shift (R = aliphatic or aryl) based on tetracoordinate boron species have been well investigated. In the contrary, the corresponding radical migrations, especially 1,2-boryl radical shift for the construction of organoborons is still in its infancy. Given the paucity and significance of such strategies in boron chemistry, it is urgent to develop other efficient and alternative synthetic protocols to enrich these underdeveloped radical 1,2-boron migrations, before their fundamental potential applications could be fully explored at will. Herein, we have demonstrated a visible-light-induced photoredox neutral decarboxylative radical cross-coupling reaction, which undergoes a radical 1,2-boron shift to give a translocated C-radical for further capture of versatile radical acceptors. The mild reaction conditions, good functional-group tolerance, and broad β-boryl NHPI esters scope as well as versatile radical acceptors make this protocol applicable in modification of bioactive molecules. It can be expected that this methodology will be a very useful tool and an alternative strategy for the construction of primary organoborons via a novel radical 1,2-boron shift mode.
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Affiliation(s)
- Yu Guo
- Institute of Next Generation Matter Transformation, College of Material Sciences Engineering, Huaqiao University, 361021, Xiamen, Fujian, P. R. China
| | - Xiaosha Wang
- Institute of Next Generation Matter Transformation, College of Material Sciences Engineering, Huaqiao University, 361021, Xiamen, Fujian, P. R. China
| | - Chengbo Li
- Institute of Next Generation Matter Transformation, College of Material Sciences Engineering, Huaqiao University, 361021, Xiamen, Fujian, P. R. China
| | - Jianke Su
- Institute of Next Generation Matter Transformation, College of Material Sciences Engineering, Huaqiao University, 361021, Xiamen, Fujian, P. R. China
| | - Jian Xu
- Institute of Next Generation Matter Transformation, College of Material Sciences Engineering, Huaqiao University, 361021, Xiamen, Fujian, P. R. China.
| | - Qiuling Song
- Institute of Next Generation Matter Transformation, College of Material Sciences Engineering, Huaqiao University, 361021, Xiamen, Fujian, P. R. China.
- Key Laboratory of Molecule Synthesis and Function Discovery, Fujian Province University, College of Chemistry at Fuzhou University, 350108, Fuzhou, P. R. China.
- School of Chemistry and Chemical Engineering, Henan Normal University, 453007, Xinxiang, Henan, P. R. China.
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8
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Guo Y, Su J, Xu J, Song Q. Synthesis of Phosphachromones by Cyclized Coupling of Ethyl Hydrogen (Phenylethynyl)phosphonate with Arynes. Org Lett 2023; 25:6459-6463. [PMID: 37624072 DOI: 10.1021/acs.orglett.3c01938] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/26/2023]
Abstract
A straightforward and efficient strategy for the synthesis of phosphachromones has been reported via the insertion of arynes into P-O bonds. This operationally simple reaction is compatible with different functional groups, affording various phosphachromones by the simultaneous formation of C-P and C-O bonds in one step with moderate to good yields, and the Fries rearrangement involving phosphorus atoms is a key step in the reaction.
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Affiliation(s)
- Yu Guo
- Institute of Next Generation Matter Transformation, College of Chemical Engineering and College of Material Sciences Engineering, Huaqiao University, 668 Jimei Blvd, Xiamen, Fujian 361021, China
| | - Jianke Su
- Institute of Next Generation Matter Transformation, College of Chemical Engineering and College of Material Sciences Engineering, Huaqiao University, 668 Jimei Blvd, Xiamen, Fujian 361021, China
| | - Jian Xu
- Institute of Next Generation Matter Transformation, College of Chemical Engineering and College of Material Sciences Engineering, Huaqiao University, 668 Jimei Blvd, Xiamen, Fujian 361021, China
| | - Qiuling Song
- Institute of Next Generation Matter Transformation, College of Chemical Engineering and College of Material Sciences Engineering, Huaqiao University, 668 Jimei Blvd, Xiamen, Fujian 361021, China
- Key Laboratory of Molecule Synthesis and Function Discovery, Fujian Province University, College of Chemistry at Fuzhou University, Fuzhou, Fujian 350108, China
- School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
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9
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Xia GD, Liu ZK, Zhao YL, Jia FC, Hu XQ. Radical Phosphorylation of Aliphatic C-H Bonds via Iron Photocatalysis. Org Lett 2023; 25:5279-5284. [PMID: 37431881 DOI: 10.1021/acs.orglett.3c01824] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/12/2023]
Abstract
The synthesis of tertiary phosphines(III) has been a long-standing challenge in synthetic chemistry because of inevitable issues including harsh conditions, sensitive organometallic reagents, and prefunctionalized substrates in traditional synthesis. Herein, we report a strategically novel C(sp3)-H bond phosphorylation that enables the assembly of structurally diverse tertiary phosphines(III) from industrial phosphine(III) sources under mild photocatalytic conditions. The merger of ligand-to-metal charge transfer (LMCT) of FeCl3 with the hydrogen atom-transfer (HAT) process is the key for the generation of alkyl radicals from hydrocarbons. Strikingly, this catalytic system can be successfully applied for the polymerization of electron-deficient alkenes.
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Affiliation(s)
- Guang-Da Xia
- Key Laboratory of Catalysis and Energy Materials Chemistry of Ministry of Education & Hubei Key Laboratory of Catalysis and Materials Science, School of Chemistry and Materials Science, South-Central Minzu University, Wuhan 430074, China
| | - Zi-Kui Liu
- Key Laboratory of Catalysis and Energy Materials Chemistry of Ministry of Education & Hubei Key Laboratory of Catalysis and Materials Science, School of Chemistry and Materials Science, South-Central Minzu University, Wuhan 430074, China
| | - Yu-Lian Zhao
- Key Laboratory of Catalysis and Energy Materials Chemistry of Ministry of Education & Hubei Key Laboratory of Catalysis and Materials Science, School of Chemistry and Materials Science, South-Central Minzu University, Wuhan 430074, China
| | - Feng-Cheng Jia
- School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Wuhan, 430205, China
| | - Xiao-Qiang Hu
- Key Laboratory of Catalysis and Energy Materials Chemistry of Ministry of Education & Hubei Key Laboratory of Catalysis and Materials Science, School of Chemistry and Materials Science, South-Central Minzu University, Wuhan 430074, China
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10
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Ash J, Kang JY. Catalyst-free thiophosphorylation of in situ formed ortho-quinone methides. Org Biomol Chem 2023; 21:2370-2374. [PMID: 36852656 DOI: 10.1039/d2ob02169b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/25/2023]
Abstract
A metal-, chloride reagent and base-free thiophosphorylation reaction of in situ formed ortho-quinone methide (o-QM) to synthesize functionalized thiophosphates has been developed. The reaction is an atom-economical process, producing water as the sole byproduct. (EtO)2P(O)SH functions as both a Brønsted acid and nucleophilic thiolate to produce the o-QM intermediate and the thiophosphate product, respectively. The aza o-QMs were also successfully thiophosphorylated in the presence of catalytic TsOH to form sulfonamido thiophosphates.
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Affiliation(s)
- Jeffrey Ash
- Department of Chemistry and Biochemistry, University of Nevada Las Vegas, 4505 S. Maryland Parkway, Las Vegas, Nevada, 89154-4003, USA.
| | - Jun Yong Kang
- Department of Chemistry and Biochemistry, University of Nevada Las Vegas, 4505 S. Maryland Parkway, Las Vegas, Nevada, 89154-4003, USA.
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11
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Song HY, Liu MY, Huang J, Wang D, Jiang J, Chen JY, Yang TB, He WM. Photosynthesis of 3-Alkylated Coumarins from Carboxylic Acids Catalyzed by a Na 2S-Based Electron Donor-Acceptor Complex. J Org Chem 2023; 88:2288-2295. [PMID: 36738288 DOI: 10.1021/acs.joc.2c02679] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
A simple and practical electron donor-acceptor (EDA) strategy to synthesize various 3-alkylated coumarins from easily available coumarins and naturally abundant carboxylic acids under photocatalyst-, oxidant-, and additive-free and mild conditions is reported. Using Na2S as the catalytic electron donor, a series of primary, secondary, and tertiary carbon radicals can be efficiently generated, and the EDA complex can be regenerated without an alkaline additive.
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Affiliation(s)
- Hai-Yang Song
- School of Chemistry and Chemical Engineering, University of South China, Hengyang 421001, China
| | - Mei-Yi Liu
- School of Chemistry and Chemical Engineering, University of South China, Hengyang 421001, China
| | - Jing Huang
- School of Chemistry and Chemical Engineering, University of South China, Hengyang 421001, China
| | - Dan Wang
- School of Chemistry and Chemical Engineering, University of South China, Hengyang 421001, China
| | - Jun Jiang
- School of Chemistry and Chemical Engineering, University of South China, Hengyang 421001, China
| | - Jin-Yang Chen
- School of Chemistry and Chemical Engineering, University of South China, Hengyang 421001, China
| | - Tian-Bao Yang
- National Engineering Research Center of Low-Carbon Processing and Utilization of Forest Biomass, Nanjing Forestry University, Nanjing 210037, China
| | - Wei-Min He
- School of Chemistry and Chemical Engineering, University of South China, Hengyang 421001, China
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12
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Takamatsu K, Suzuki R, Matsunaga A, Katagiri H, Konno H. Structure-Activity Relationship Study of N-Hydroxyphtalimide Derivatives for the Detection of Amines during Fmoc-Solid-Phase Peptide Synthesis. J Org Chem 2023; 88:1319-1326. [PMID: 36655852 DOI: 10.1021/acs.joc.2c01342] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Previously, we developed a method for the detection of unprotected amino groups based on their reversible reaction with N-hydroxyphthalimide (NHPI) to form intensely colored products, which can be useful when conducting solid-phase peptide synthesis. Here, we describe a structure-activity relationship study of NHPI derivatives to identify the derivative best suited for this method using a spectrophotometer toward the estimation of chemical yields. We found that the products resulting from the reaction of the derivative with an unprotected amino group were only intensely colored if the structure of the derivative incorporated an NHPI framework. We also prepared five peptides, including those containing N-methyl and D-amino acid, and Pro residues, using our reversible detection method to detect unprotected amino groups. The mechanism of the detection reaction was also studied by the structural analysis of the NHPI (1) and diisopropylamine complex and concluded to entail salt formation between the N-hydroxy group and amine.
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Affiliation(s)
- Keigo Takamatsu
- Graduate School of Science and Engineering, Yamagata University, Yonezawa, Yamagata 992-8510, Japan
| | - Rio Suzuki
- Graduate School of Science and Engineering, Yamagata University, Yonezawa, Yamagata 992-8510, Japan
| | - Amane Matsunaga
- Graduate School of Science and Engineering, Yamagata University, Yonezawa, Yamagata 992-8510, Japan
| | - Hiroshi Katagiri
- Graduate School of Science and Engineering, Yamagata University, Yonezawa, Yamagata 992-8510, Japan.,Graduate School of Organic Materials Science, Yamagata University, Yonezawa, Yamagata 992-8510, Japan
| | - Hiroyuki Konno
- Graduate School of Science and Engineering, Yamagata University, Yonezawa, Yamagata 992-8510, Japan
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13
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Wang L, Yu J, Duan Z, Jin J, Zhang Y. Cobalt-catalyzed synthesis of aryl ketones and aldehydes from redox-active esters. Org Biomol Chem 2022; 20:6554-6557. [PMID: 35929778 DOI: 10.1039/d2ob01275h] [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 cobalt-catalyzed decarboxylative oxidation of benzylic redox-active esters is described. This protocol efficiently converts secondary or primary aliphatic carboxylic acids into aromatic ketones or aldehydes. A wide range of substrates selectively reacted in good to excellent yields with broad functional group tolerance. Notably, various biologically active molecules could also work well, which indicated the synthetic application of such a methodology.
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Affiliation(s)
- Lan Wang
- Department of Chemistry, China Agricultural University, Beijing 100193, China.
| | - Jiage Yu
- Department of Chemistry, China Agricultural University, Beijing 100193, China.
| | - Zeqing Duan
- Department of Chemistry, China Agricultural University, Beijing 100193, China.
| | - Jingrong Jin
- Department of Chemistry, China Agricultural University, Beijing 100193, China.
| | - Yunfei Zhang
- Department of Chemistry, China Agricultural University, Beijing 100193, China.
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14
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Yang B, Zhang XY, Yue HQ, Li WZ, Li M, Lu L, Wu ZQ, Li J, Sun K, Yang S. A Promoter‐free Protocol for the Synthesis of Selenophosphates and Thiophosphates via a Spontaneous Process at Room Temperature. Adv Synth Catal 2022. [DOI: 10.1002/adsc.202200625] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
| | | | | | | | | | | | | | | | - Kai Sun
- Anyang Normal University CHINA
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15
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Zhang P, Li W, Zhu X, Li Y, Zhao X, Shi S, Zhu F, Lin J, Gao X. Photoredox and Copper‐Catalyzed Sulfonylphosphorothiolation of Alkenes toward β‐Sulfonyl Phosphorothioates. Adv Synth Catal 2022. [DOI: 10.1002/adsc.202200766] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
| | | | | | - Ying Li
- Xinxiang Medical University CHINA
| | | | | | | | | | - Xia Gao
- Xinxiang Medical University CHINA
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16
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Tóth B, Szabó T, Volk B, Milen M. Propylphosphonic anhydride (T3P®)-mediated synthesis of redox-active N-(acyloxy)phthalimides. Tetrahedron Lett 2022. [DOI: 10.1016/j.tetlet.2022.154016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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17
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Zhang B, Fu Z, Yang H, Liu D, Sun Y, Xu Y, Yu F, Yan S. Transition‐Metal‐Free C(
sp
2
)−H Phosphorothiolation/Cyclization of
o
‐Hydroxyarylenaminones: Access to
S
‐3‐Chromon Phosphorothioates. Adv Synth Catal 2022. [DOI: 10.1002/adsc.202200089] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Biao Zhang
- Faculty of Life Science and Technology Kunming University of Science and Technology Kunming 650500 People's Republic of China
| | - Zhonghui Fu
- Faculty of Life Science and Technology Kunming University of Science and Technology Kunming 650500 People's Republic of China
| | - Haoqi Yang
- Faculty of Life Science and Technology Kunming University of Science and Technology Kunming 650500 People's Republic of China
| | - Donghan Liu
- Faculty of Life Science and Technology Kunming University of Science and Technology Kunming 650500 People's Republic of China
| | - Yulin Sun
- Faculty of Life Science and Technology Kunming University of Science and Technology Kunming 650500 People's Republic of China
| | - Yu Xu
- School of nursing Xi'An Innovation College of Yan'An University Xi'An 710100 People's Republic of China
| | - Fuchao Yu
- Faculty of Life Science and Technology Kunming University of Science and Technology Kunming 650500 People's Republic of China
| | - Sheng‐Jiao Yan
- Key Laboratory of Medicinal Chemistry for Natural Resources Ministry of Education and Yunnan Province School of Chemical Science and Technology Yunnan University Kunming 650091 People's Republic of China
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18
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Zhang P, Li W, Qu W, Shu Z, Tao Y, Lin J, Gao X. Copper and Photocatalytic Radical Relay Enabling Fluoroalkylphosphorothiolation of Alkenes: Modular Synthesis of Fluorine-Containing S-Alkyl Phosphorothioates and Phosphorodithioates. Org Lett 2021; 23:9267-9272. [PMID: 34779202 DOI: 10.1021/acs.orglett.1c03608] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
A photoredox and copper-catalyzed fluoroalkylphosphorothiolation of activated and unactivated alkenes via a radical relay mechanism is reported. By employing fluoroalkyl halides as radical precursors and P(O)SH or P(S)SH compounds as coupling partners, a wide range of β-monofluoroalkyl-, -difluoroalkyl-, -trifluoromethyl-, or -perfluoroalkyl-substituted S-alkyl phosphorothioates and phosphorodithioates can be easily constructed under mild conditions with good functional group tolerance. Furthermore, this modular reaction system can be successfully applied to late-stage functionalization of bioactive molecules.
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Affiliation(s)
- Pengbo Zhang
- School of Public Health, Xinxiang Medical University, Xinxiang 453003, China
| | - Wenwu Li
- School of Public Health, Xinxiang Medical University, Xinxiang 453003, China
| | - Weilong Qu
- School of Public Health, Xinxiang Medical University, Xinxiang 453003, China
| | - Zhigang Shu
- School of Public Health, Xinxiang Medical University, Xinxiang 453003, China
| | - Yingjun Tao
- School of Public Health, Xinxiang Medical University, Xinxiang 453003, China
| | - Jinming Lin
- School of Public Health, Xinxiang Medical University, Xinxiang 453003, China
| | - Xia Gao
- School of Public Health, Xinxiang Medical University, Xinxiang 453003, China
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