1
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Cazzaniga G, Tresoldi A, Gelain A, Meneghetti F, Mori M, Villa S. Eco-Friendly Bio-Based Solvents for the Acetylation of the Amino Group of Amino Acids. Chem Biodivers 2024; 21:e202301729. [PMID: 38241063 DOI: 10.1002/cbdv.202301729] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2023] [Accepted: 01/19/2024] [Indexed: 02/07/2024]
Abstract
Nature-derived products, like juices and peel extracts of fruits and vegetables, have emerged in recent years as interesting and sustainable alternatives to traditional solvents in several synthetic applications. Herein, we present a green and fast method for the N-acetylation of amino acids, using several bio-based solvents (vinegar, tomato/kiwi/apple peel extracts, lemon juice, etc.). The high reactivity of the amino group is often a limitation in synthetic processes, making its protection a necessary step to achieve pure products and limit side reactions. Therefore, versatile, time-efficient procedures, minimal purification efforts, and good yields are desirable features for these transformations. Our new method meets all these criteria, offering a valuable and eco-friendly alternative to traditional approaches. In detail, we managed to obtain comparable yields to established setups, while improving safety and reducing the environmental impact of the overall process. Most notably, the milder conditions made it possible to avoid the use of running water (saving about 250 L/reaction) and electric-powered cooling devices.
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Affiliation(s)
- Giulia Cazzaniga
- Department of Pharmaceutical Sciences, University of Milan, Via L. Mangiagalli 25, 20133, Milano, Italy
| | - Andrea Tresoldi
- Department of Pharmaceutical Sciences, University of Milan, Via L. Mangiagalli 25, 20133, Milano, Italy
| | - Arianna Gelain
- Department of Pharmaceutical Sciences, University of Milan, Via L. Mangiagalli 25, 20133, Milano, Italy
| | - Fiorella Meneghetti
- Department of Pharmaceutical Sciences, University of Milan, Via L. Mangiagalli 25, 20133, Milano, Italy
| | - Matteo Mori
- Department of Pharmaceutical Sciences, University of Milan, Via L. Mangiagalli 25, 20133, Milano, Italy
| | - Stefania Villa
- Department of Pharmaceutical Sciences, University of Milan, Via L. Mangiagalli 25, 20133, Milano, Italy
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2
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Takahashi N, Takahashi A, Shimada N. Hydroxy-directed peptide bond formation from α-amino acid-derived inert esters enabled by boronic acid catalysis. Chem Commun (Camb) 2024; 60:448-451. [PMID: 38088060 DOI: 10.1039/d3cc04856j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2024]
Abstract
A boronic acid-catalyzed peptide bond formation from α-amino acid methyl esters is described. The catalysis showed high chemoselectivity for β-hydroxy-α-amino esters, affording the peptides in high to excellent yields with high functional group tolerance. This hydroxy-directed peptide bond formation could be applicable to oligopeptide syntheses. This is the first successful example of organoboron-catalyzed peptide bond formation from α-amino acid-derived inert esters.
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Affiliation(s)
- Naoya Takahashi
- Laboratory of Organic Chemistry for Drug Development and Medical Research Laboratories, Department of Pharmaceutical Sciences, Kitasato University, 5-9-1 Shirokane, Minato-ku, Tokyo 108-8641, Japan
| | - Airi Takahashi
- Laboratory of Organic Chemistry for Molecular Transformations, Department of Chemistry and the Institute of Natural Sciences, Nihon University, 3-25-40 Sakurajosui, Setagaya-ku, Tokyo 156-8550, Japan.
| | - Naoyuki Shimada
- Laboratory of Organic Chemistry for Molecular Transformations, Department of Chemistry and the Institute of Natural Sciences, Nihon University, 3-25-40 Sakurajosui, Setagaya-ku, Tokyo 156-8550, Japan.
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3
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Mukherjee A, Nad P, Gupta K, Sen A. Mechanistic Understanding of KOtBu-Mediated Direct Amidation of Esters with Anilines: An Experimental Study and Computational Approach. Chem Asian J 2022; 17:e202200800. [PMID: 36048008 DOI: 10.1002/asia.202200800] [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: 07/31/2022] [Revised: 08/22/2022] [Indexed: 11/12/2022]
Abstract
A sustainable and cost-effective protocol has been reported for the synthesis of amide bonds from unactivated esters and non-nucleophilic amines promoted by potassium tert -butoxide under aerobic conditions. The reaction proceeds under relatively mild conditions, encompassing wide substrate scope. A combined experimental and quantum chemical study has been performed to shed light on the mechanism, which implied that a radical pathway is operating for the present protocol.
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Affiliation(s)
- Arup Mukherjee
- Indian Institute of Technology Bhilai, Chemistry, GEC Campus, Raipur, 492015, Raipur, INDIA
| | - Pinaki Nad
- IIT Bhilai: Indian Institute of Technology Bhilai, Chemistry, INDIA
| | - Kriti Gupta
- IIT Bhilai: Indian Institute of Technology Bhilai, Chemistry, INDIA
| | - Anik Sen
- GITAM Institute of Science: Gandhi Institute of Technology and Management Institute of Science, Chemistry, INDIA
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4
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Nakashima E, Yamamoto H. Biomimetic Peptide Catalytic Bond‐Forming Utilizing a Mild Brønsted Acid. Chemistry 2022; 28:e202103989. [DOI: 10.1002/chem.202103989] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2021] [Indexed: 11/12/2022]
Affiliation(s)
- Erika Nakashima
- College of Engineering Chubu University 1200 Matsumoto-cho Kasugai Aichi 487-8501 Japan
| | - Hisashi Yamamoto
- Frontier Research Insititute Chubu University 1200 Matsumoto-cho Kasugai Aichi 487-8501 Japan
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5
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Ghafuri H, Ghafori Gorab M, Dogari H. Tandem oxidative amidation of benzylic alcohols by copper(II) supported on metformin-graphitic carbon nitride nanosheets as an efficient catalyst. Sci Rep 2022; 12:4221. [PMID: 35273221 PMCID: PMC8908756 DOI: 10.1038/s41598-022-07543-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2021] [Accepted: 02/21/2022] [Indexed: 12/25/2022] Open
Abstract
In this research, an efficient heterogeneous catalyst based on graphitic carbon nitride nanosheets (CN) has been reported. The CN was functionalized by 1,3-dibromopropane as a linker (CN-Pr-Br) and subsequently modified with metformin (CN-Pr-Met). Furthermore, the copper(II) was coordinated on modified CN (CN-Pr-Met-Cu(II)) and during this process, 7.94% copper(II) was loaded into the catalyst structure. The synthesized catalyst was evaluated by various techniques including fourier-transform infrared spectroscopy (FT-IR), energy dispersive X-ray spectroscopy (EDS), field emission scanning electron microscopy (FE-SEM), thermogravimetric analysis (TGA), X-ray diffraction (XRD), and inductively coupled plasma atomic emission spectroscopy (ICP-OES). CN-Pr-Met-Cu(II) was used as a catalyst in the synthesis of amides via the oxidation of benzyl alcohols. The conditions of this reaction were optimized in terms of temperature, time, amount of catalyst, type of base, oxidant, and solvent. Moreover, a variety of amides with an efficiency of 75-95% were synthesized. The reaction was carried out in the presence of benzyl alcohols, amine hydrochloride salts, tert-butyl hydroperoxide (TBHP), CaCO3, and CN-Pr-Met-Cu(II) at 80 °C of acetonitrile solvent. The synthesized catalyst can be easily separated from the reaction medium and reused for 7 consecutive runs without a significant reduction in reaction efficiency.
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Affiliation(s)
- Hossein Ghafuri
- Catalysts and Organic Synthesis Research Laboratory, Department of Chemistry, Iran University of Science and Technology, 16846-13114, Tehran, Iran.
| | - Mostafa Ghafori Gorab
- Catalysts and Organic Synthesis Research Laboratory, Department of Chemistry, Iran University of Science and Technology, 16846-13114, Tehran, Iran
| | - Haniyeh Dogari
- Catalysts and Organic Synthesis Research Laboratory, Department of Chemistry, Iran University of Science and Technology, 16846-13114, Tehran, Iran
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6
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Zhang C, Zhang Y, Liang Q, Zhang G, Yang W, Li N, Qin G, Zhang G. Formamidation of a wide range of substituted and functionalized amines with CO and a base. Org Chem Front 2022. [DOI: 10.1039/d2qo01312f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
We have developed a base mediated formamidation of amines with CO under mild conditions, which allows for the synthesis of a wide range of aromatic and aliphatic formamides in high yields and gram amounts in the absence of a transition metal.
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Affiliation(s)
- Chunyan Zhang
- State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan, 030001, P. R. China
- Taiyuan University of Technology, Taiyuan, 030001, P. R. China
| | - Yushuang Zhang
- State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan, 030001, P. R. China
| | - Qianqian Liang
- State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan, 030001, P. R. China
- University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Guohui Zhang
- State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan, 030001, P. R. China
| | - Wei Yang
- State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan, 030001, P. R. China
| | - Nanwen Li
- State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan, 030001, P. R. China
| | - Guiping Qin
- Faculty of Science, Kunming University of Science and Technology, Kunming, 650500, P. R. China
| | - Guoying Zhang
- State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan, 030001, P. R. China
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7
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Mali AS, Indalkar K, Chaturbhuj GU. Solvent-free, Efficient Transamidation of Carboxamides with Amines Catalyzed by Recyclable Sulfated Polyborate Catalyst. ORG PREP PROCED INT 2021. [DOI: 10.1080/00304948.2021.1908047] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Anil S. Mali
- Institute of Chemical Technology, Matunga, Mumbai, India
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8
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Yamada T, Watanabe Y, Okamoto S. 6-Halo-2-pyridone as an efficient organocatalyst for ester aminolysis. RSC Adv 2021; 11:24588-24593. [PMID: 35481026 PMCID: PMC9036873 DOI: 10.1039/d1ra04651a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2021] [Accepted: 07/07/2021] [Indexed: 01/19/2023] Open
Abstract
It was found that 6-halo-2-pyridones catalysed ester aminolysis in which not only reactive aryl esters but also relatively less reactive methyl and benzyl esters could be used as a substrate. The reaction could be performed without strictly dry and anaerobic conditions and the 6-chloro-2-pyridone catalyst could be recovered quantitatively after reaction. The method could be applied to dipeptide synthesis from methyl or benzyl esters of amino acids, where a high enantiomeric purity of the products was maintained. The mechanism involving dual activation of ester and amine substrates through hydrogen bonding between catalyst and substrates is proposed where 6-halo-2-pyridones act as a bifunctional Brønsted acid/base catalyst. 6-Halo-2-pyridones effectively catalyse ester aminolysis as bifunctional catalysts. This reaction did not require any special conditions and was operationally convenient.![]()
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Affiliation(s)
- Takeshi Yamada
- Department of Materials and Life Chemistry, Kanagawa University 3-27-1 Rokkakubashi, Kanagawa-ku Yokohama 221-8686 Japan
| | - Yusuke Watanabe
- Department of Materials and Life Chemistry, Kanagawa University 3-27-1 Rokkakubashi, Kanagawa-ku Yokohama 221-8686 Japan
| | - Sentaro Okamoto
- Department of Materials and Life Chemistry, Kanagawa University 3-27-1 Rokkakubashi, Kanagawa-ku Yokohama 221-8686 Japan
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9
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Alla M, Indukuri DR, Potuganti GR, Nanubolu JB. Synthesis of Dihydropyrrole Derivatives by Oxidative Functionalization of 2-Amino-4H-Chromenes Using Hypervalent Iodine Reagents. Synlett 2021. [DOI: 10.1055/a-1500-6863] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
AbstractAn efficient simple, metal-free, one-pot protocol for the synthesis of dihydropyrrole derivatives has been achieved via sequential addition of iodobenzenediacetate and secondary amine to 2-amino-4H- pyran derivatives. The one-pot protocol proceeds through tandem oxidative functionalization, rearrangement, and ring contraction to provide an entirely new strategy for the construction of the dihydropyrrole skeleton.
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Affiliation(s)
- Manjula Alla
- Division of Fluoro and Agro Chemicals, CSIR-Indian Institute of Chemical Technology
- Academy of Scientific and Innovative Research (AcSIR)
| | - Divakar Reddy Indukuri
- Division of Fluoro and Agro Chemicals, CSIR-Indian Institute of Chemical Technology
- Academy of Scientific and Innovative Research (AcSIR)
| | - Gal Reddy Potuganti
- Division of Fluoro and Agro Chemicals, CSIR-Indian Institute of Chemical Technology
- Academy of Scientific and Innovative Research (AcSIR)
| | - Jagadeesh Babu Nanubolu
- Centre for X-ray Crystallography, CSIR-Indian Institute of Chemical Technology
- Academy of Scientific and Innovative Research (AcSIR)
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10
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Banerjee A, Hattori T, Yamamoto H. Regio- and Stereoselective (SN2) N-, O-, C- and S-Alkylation Using Trialkyl Phosphates. SYNTHESIS-STUTTGART 2021. [DOI: 10.1055/a-1504-8366] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
AbstractBimolecular nucleophilic substitution (SN2) is one of the most well-known fundamental reactions in organic chemistry to generate new molecules from two molecules. In principle, a nucleophile attacks from the back side of an alkylating agent having a suitable leaving group, most commonly a halide. However, alkyl halides are expensive, very harmful, toxic and not so stable, which makes them problematic for laboratory use. In contrast, trialkyl phosphates are inexpensive, readily accessible and stable at room temperature, under air, and are easy to handle, but rarely used as alkylating agents in organic synthesis. Here, we describe a mild, straightforward and powerful method for nucleophilic alkylation of various N-, O-, C- and S-nucleophiles using readily available trialkyl phosphates. The reaction proceeds smoothly in excellent yield, and quantitative yield in many cases, and covers a wide range of substrates. Further, the rare stereoselective transfer of secondary alkyl groups has been achieved with inversion of configuration of chiral centers (up to 98% ee).
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11
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Ansu-Gyeabourh E, Amoah E, Ganesa C, Badu-Tawiah AK. Monoacylation of Symmetrical Diamines in Charge Microdroplets. JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY 2021; 32:531-536. [PMID: 33356239 DOI: 10.1021/jasms.0c00384] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Monoacylation of symmetrical diamine is achieved when the primary α,ω-diamines (carbon numbers n = 3, 5 and 12) are diluted in ethyl acetate, and the resultant mixture is electrosprayed across a 10 mm distance in ambient air toward a mass spectrometer. The N-acylated product is formed in charged microdroplets without acidifying and activating agents and in the absence of heat. This result provided an insight into the orientation of the amines in the droplets, suggesting that the ester is activated to react with the amine at the droplet surface due to the high abundance of protons at the air-droplet interface.
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Affiliation(s)
- Emelia Ansu-Gyeabourh
- Department of Chemistry and Biochemistry, The Ohio State University, Columbus, Ohio 43210, United States
- MassBiologics of The University of Massachusetts Medical School, Boston, Massachusetts 02126, United States
| | - Enoch Amoah
- Department of Chemistry and Biochemistry, The Ohio State University, Columbus, Ohio 43210, United States
| | - Chandrashekar Ganesa
- MassBiologics of The University of Massachusetts Medical School, Boston, Massachusetts 02126, United States
| | - Abraham K Badu-Tawiah
- Department of Chemistry and Biochemistry, The Ohio State University, Columbus, Ohio 43210, United States
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12
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Amirsoleimani M, Khalilzadeh MA, Zareyee D. Preparation and catalytic evaluation of a palladium catalyst deposited over modified clinoptilolite (Pd@MCP) for chemoselective N-formylation and N-acylation of amines. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2020.129076] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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13
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Sulfated TiO2/SnO2 nanocomposite as a green heterogeneous catalyst for direct amide formation reaction. RESULTS IN CHEMISTRY 2021. [DOI: 10.1016/j.rechem.2021.100102] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
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14
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Talukdar R. Rapid access to 3-acyl indoles using ethyl acetate/triflic acid couple as the acylium donor and Cu(OAc) 2 catalysed aerial oxidation of indole benzoins. Org Biomol Chem 2020; 18:8876-8880. [PMID: 33103169 DOI: 10.1039/d0ob01977a] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Esters are potential acyl donors but are relatively unexplored for that purpose. A facile installation of acyl groups at the C-3 position of indoles under triflic acid catalysed conditions with easily available and cheap esters as new acylating agents is described herein. Furthermore, heterocycles like N-protected pyrrole, furan and thiophene were also suitable substrates for similar C-2 acylation. Analogous C-3 benzoylated products of indole were obtained, albeit in lower yields, by using methyl benzoate as a benzoyl donor. The benzoylated products were synthesised in much better yields via a copper(ii) catalysed aerial oxidation of indole containing benzoins.
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Affiliation(s)
- Ranadeep Talukdar
- Molecular Synthesis and Drug Discovery Laboratory, Centre of Biomedical Research, Sanjay Gandhi Postgraduate Institute of Medical Sciences, Lucknow-226014, India.
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15
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Xia S, Jiang Z, Huang Y, Li D, Cui Y, Li Y, Xia Y. Synthesis of Titanium Complexes Supported by Carbinolamide- and Amide-Containing Ligands Derived from Ti(NMe 2) 4-Mediated Selective Amidations of Carbonyl Groups. Inorg Chem 2020; 59:14031-14041. [PMID: 32955246 DOI: 10.1021/acs.inorgchem.0c01831] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
An efficient strategy for the syntheses of a series of titanium complexes has been developed. This protocol features the employment of Ti(NMe2)4 both as the metal center to trigger the deprotonation of the ligands and as an amine source to proceed the amidation reactions of carbonyl functionalities of the ligands. Treatment of Ti(NMe2)4 with a ligand HL1 (HL1 = 2,2'-(((2-hydroxybenzyl)azanediyl)bis(ethane-2,1-diyl))bis(isoindoline-1,3-dione) results in the formation of Ti(L1')(NMe2) (1) (H3L1' = N1-(2-((2-(1-(dimethylamino)-1-hydroxy-3-oxoisoindolin-2-yl)ethyl)(2-hydroxybenzyl)amino)ethyl)-N2,N2-dimethylphthalamide). One important feature regarding the synthesis of 1 is the occurrence of the in situ metal-ligand reaction between Ti(NMe2)4 and HL1, leading to the simultaneous formations of carbinolamide and amide scaffolds. Another prominent feature in terms of the preparation of 1 is the achievement of the selective ring-opening reaction of one of the two phthalimide units of the HL1 ligand, affording carbinolamide and amide functionalities within one ligand set. The developed methodology characterizes an ample substrate scope. The selective amidation reactions of the carbonyl groups have been realized for a series of analogous ligands HL2-HL7. Density functional theory calculations were employed to disclose the mechanisms for the formation of 1-7, and the details for the selective ring-opening reactions of the phthalimide unit were uncovered.
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Affiliation(s)
- Shengwang Xia
- College of Chemistry, Chemical Engineering, and Materials Science, Soochow University, Suzhou 215123, People's Republic of China
| | - Zhilei Jiang
- College of Chemistry, Chemical Engineering, and Materials Science, Soochow University, Suzhou 215123, People's Republic of China
| | - Yuan Huang
- College of Chemistry, Chemical Engineering, and Materials Science, Soochow University, Suzhou 215123, People's Republic of China
| | - Dawei Li
- College of Chemistry, Chemical Engineering, and Materials Science, Soochow University, Suzhou 215123, People's Republic of China
| | - Yanfeng Cui
- College of Chemistry, Chemical Engineering, and Materials Science, Soochow University, Suzhou 215123, People's Republic of China
| | - Yahong Li
- College of Chemistry, Chemical Engineering, and Materials Science, Soochow University, Suzhou 215123, People's Republic of China
| | - Yuanzhi Xia
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325035, People's Republic of China
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16
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Sahoo A, Chowdhury AH, Singha P, Banerjee A, Manirul Islam S, Bala T. Morphology of ZnO triggered versatile catalytic reactions towards CO2 fixation and acylation of amines at optimized reaction conditions. MOLECULAR CATALYSIS 2020. [DOI: 10.1016/j.mcat.2020.111070] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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17
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Hussein MA, Dinh AH, Huynh VT, Nguyen TV. Synthesis of tertiary amines by direct Brønsted acid catalyzed reductive amination. Chem Commun (Camb) 2020; 56:8691-8694. [PMID: 32613957 DOI: 10.1039/d0cc02955f] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Tertiary amines are ubiquitous and valuable compounds in synthetic chemistry, with a wide range of applications in organocatalysis, organometallic complexes, biological processes and pharmaceutical chemistry. One of the most frequently used pathways to synthesize tertiary amines is the reductive amination reaction of carbonyl compounds. Despite developments of numerous new reductive amination methods in the past few decades, this reaction generally requires non-atom-economic processes with harsh conditions and toxic transition-metal catalysts. Herein, we report simple yet practical protocols using triflic acid as a catalyst to efficiently promote the direct reductive amination reactions of carbonyl compounds on a broad range of substrates. Applications of this new method to generate valuable heterocyclic frameworks and polyamines are also included.
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Affiliation(s)
- Mohanad A Hussein
- School of Chemistry, University of New South Wales, Sydney, Australia.
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18
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Chhatwal AR, Lomax HV, Blacker AJ, Williams JMJ, Marcé P. Direct synthesis of amides from nonactivated carboxylic acids using urea as nitrogen source and Mg(NO 3) 2 or imidazole as catalysts. Chem Sci 2020; 11:5808-5818. [PMID: 32832055 PMCID: PMC7416778 DOI: 10.1039/d0sc01317j] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2020] [Accepted: 05/16/2020] [Indexed: 12/19/2022] Open
Abstract
A new method for the direct synthesis of primary and secondary amides from carboxylic acids is described using Mg(NO3)2·6H2O or imidazole as a low-cost and readily available catalyst, and urea as a stable, and easy to manipulate nitrogen source. This methodology is particularly useful for the direct synthesis of primary and methyl amides avoiding the use of ammonia and methylamine gas which can be tedious to manipulate. Furthermore, the transformation does not require the employment of coupling or activating agents which are commonly required.
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Affiliation(s)
- A Rosie Chhatwal
- Department of Chemistry , University of Bath , Claverton Down , Bath , BA2 7AY , UK .
| | - Helen V Lomax
- Centre for Sustainable Chemical Technologies , University of Bath , Claverton Down , Bath , BA2 7AY , UK
| | - A John Blacker
- Institute of Process Research & Development , School of Chemistry , University of Leeds , Woodhouse Lane , Leeds LS2 9JT , UK
| | - Jonathan M J Williams
- Department of Chemistry , University of Bath , Claverton Down , Bath , BA2 7AY , UK .
| | - Patricia Marcé
- Department of Chemistry , University of Bath , Claverton Down , Bath , BA2 7AY , UK .
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19
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Talukdar R. Ir III-Catalyzed direct syntheses of amides and esters using nitriles as acid equivalents: a photochemical pathway. NEW J CHEM 2020. [DOI: 10.1039/d0nj00002g] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
An unprecedented IrIII[df(CF3)ppy]2(dtbbpy)PF6-catalyzed simple photochemical process for direct addition of amines and alcohols to the relatively less reactive nitrile triple bond is described herein.
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Affiliation(s)
- Ranadeep Talukdar
- Molecular Synthesis and Drug Discovery Laboratory
- Centre of Biomedical Research
- Sanjay Gandhi Postgraduate Institute of Medical Sciences
- Lucknow 226014
- India
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20
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Guo N, Liu X, Xu H, Zhou X, Zhao H. A simple route towards the synthesis of 1,4,5-trisubstituted 1,2,3-triazoles from primary amines and 1,3-dicarbonyl compounds under metal-free conditions. Org Biomol Chem 2019; 17:6148-6152. [PMID: 31187848 DOI: 10.1039/c9ob01156k] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
An acetic acid-promoted approach that enables the synthesis of 1,4,5-trisubstituted 1,2,3-triazole derivatives has been achieved. This transformation employs readily available primary amines, 1,3-dicarbonyls and tosyl azide as the starting materials via a cycloaddition reaction under metal-free conditions. The reaction provides a simple access to fully substituted 1,2,3-triazoles from commercial substrates in moderate to excellent yields.
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Affiliation(s)
- Ningxin Guo
- Key Laboratory of Interfacial Reaction & Sensing Analysis in Universities of Shandong, School of Chemistry and Chemical Engineering, University of Jinan, Jinan, Shandong 250022, P. R. China.
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Zhou XY, Chen X, Yang D. Iodine and Brønsted acid catalyzed C–C bond cleavage of 1,3-diketones for the acylation of amines. SYNTHETIC COMMUN 2019. [DOI: 10.1080/00397911.2019.1691736] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Xiao-Yu Zhou
- School of Chemistry and Materials Engineering, Liupanshui Normal University, Liupanshui, China
| | - Xia Chen
- School of Chemistry and Materials Engineering, Liupanshui Normal University, Liupanshui, China
| | - Dan Yang
- School of Chemistry and Materials Engineering, Liupanshui Normal University, Liupanshui, China
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22
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Network structure and enzymatic degradation of chitosan hydrogels determined by crosslinking methods. Carbohydr Polym 2019; 217:160-167. [DOI: 10.1016/j.carbpol.2019.04.055] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2018] [Revised: 04/04/2019] [Accepted: 04/15/2019] [Indexed: 01/29/2023]
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Computational investigation of catalytic effects of CX 3COOH (X = F,Cl,H) on the three-component cyclocondensation reaction. J Mol Model 2019; 25:173. [PMID: 31129725 DOI: 10.1007/s00894-019-4059-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2019] [Accepted: 04/30/2019] [Indexed: 01/19/2023]
Abstract
The mechanism of acetic acid (AA), trifluoroacetic acid (TFA), and trichloroacetic acid (TCA) catalyzed three-component cyclocondensation reaction to (4S,6S)-4,6-diphenyl-1,3,5-triazinane-2-thione was determined via density functional calculations. Based on the potential energy surface diagram, TCA was found to be a reasonable catalyst [energy span (δG) is 2 kcal mol-1 less than TFA and AA] for the reaction. An energetic span model implies that TFA and AA show the same catalytic performance. The impact of the presence of halogen atoms in TFA and TCA catalysts is quantified via energy barriers. Graphical Abstract Ranking catalytic efficiency of OTC triazinane-2-thione formation Graphical Abstract contains poor quality and small text inside the artwork. Please do not re-use the file that we have rejected or attempt to increase its resolution and re-save. It is originally poor, therefore, increasing the resolution will not solve the quality problem. We suggest that you provide us the original format. We prefer replacement figures containing vector/editable objects rather than embedded images. Preferred file formats are eps, ai, tiff and pdf.It is attached as tiff format.
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Monga A, Pandey AP, Sharma A. Visible‐Light Mediated Photooxidative Synthesis of α‐Keto Amides. Adv Synth Catal 2019. [DOI: 10.1002/adsc.201900279] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Aparna Monga
- Department of ChemistryIndian Institute of Technology Roorkee Roorkee- 247667 India
| | - Amar Prakash Pandey
- Department of ChemistryIndian Institute of Technology Roorkee Roorkee- 247667 India
| | - Anuj Sharma
- Department of ChemistryIndian Institute of Technology Roorkee Roorkee- 247667 India
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25
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Zhang F, Li L, Ma J, Gong H. MoS 2-Catalyzed transamidation reaction. Sci Rep 2019; 9:2536. [PMID: 30796297 PMCID: PMC6385372 DOI: 10.1038/s41598-019-39210-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2018] [Accepted: 01/11/2019] [Indexed: 11/12/2022] Open
Abstract
The MoS2-catalyzed transamidation reaction with high yields using N,N-dimethylformamide and other amides as carbonyl sources is developed here. The protocol is simple, does not require any additive such as acid, base, ligand, etc., and encompasses a broad substrate scope for primary, secondary and heterocyclic amines. Moreover, the acetylation and propanylation of amines also can be achieved with good to excellent yield by this strategy.
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Affiliation(s)
- Feng Zhang
- College of Science, Hunan Agricultural University, Changsha, 410128, China.
| | - Lesong Li
- The Key Laboratory of Environmentally Friendly Chemistry and Application of the Ministry of Education, College of Chemistry, Xiangtan University, Xiangtan, 411105, China
| | - Juan Ma
- The Key Laboratory of Environmentally Friendly Chemistry and Application of the Ministry of Education, College of Chemistry, Xiangtan University, Xiangtan, 411105, China
| | - Hang Gong
- The Key Laboratory of Environmentally Friendly Chemistry and Application of the Ministry of Education, College of Chemistry, Xiangtan University, Xiangtan, 411105, China.
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More DA, Shinde GH, Shaikh AC, Muthukrishnan M. Oxone promoted dehydrogenative Povarov cyclization of N-aryl glycine derivatives: an approach towards quinoline fused lactones and lactams. RSC Adv 2019; 9:30277-30291. [PMID: 35530246 PMCID: PMC9072217 DOI: 10.1039/c9ra06212b] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2019] [Accepted: 09/17/2019] [Indexed: 11/21/2022] Open
Abstract
Oxone promoted intramolecular dehydrogenative imino Diels–Alder reaction (Povarov cyclization) of alkyne tethered N-aryl glycine esters and amides has been explored, thus affording biologically significant quinoline fused lactones and lactams.
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Affiliation(s)
- Devidas A. More
- Division of Organic Chemistry
- CSIR-National Chemical Laboratory
- Pune 411008
- India
- Academy of Scientific and Innovative Research (AcSIR)
| | - Ganesh H. Shinde
- Division of Organic Chemistry
- CSIR-National Chemical Laboratory
- Pune 411008
- India
| | - Aslam C. Shaikh
- Division of Organic Chemistry
- CSIR-National Chemical Laboratory
- Pune 411008
- India
| | - M. Muthukrishnan
- Division of Organic Chemistry
- CSIR-National Chemical Laboratory
- Pune 411008
- India
- Academy of Scientific and Innovative Research (AcSIR)
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28
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Egami H, Hamashima Y. Practical and Scalable Organic Reactions with Flow Microwave Apparatus. CHEM REC 2018; 19:157-171. [PMID: 30511806 DOI: 10.1002/tcr.201800132] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2018] [Accepted: 10/12/2018] [Indexed: 01/01/2023]
Abstract
Microwave irradiation has been used for accelerating organic reactions as a heating method and has been proven to be useful in laboratory scale organic synthesis. The major drawback of microwave chemistry is the difficulty in scaling up, mainly because of the low penetration depth of microwaves. The combination of microwave chemistry and flow chemistry is considered to overcome the problem in scaling up of microwave-assisted organic reactions, and some flow microwave systems have been developed in both academic and industrial communities. In this context, we have demonstrated the scale-up of fundamental organic reactions using a novel flow microwave system developed by the academic-industrial alliance between the University of Shizuoka, Advanced Industrial Science and Technology, and SAIDA FDS. In this Personal Account, we summarize the recent progress of our scalable microwave-assisted continuous synthesis using the SAIDA flow microwave apparatus.
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Affiliation(s)
- Hiromichi Egami
- School of Pharmaceutical Sciences, University of Shizuoka 52-1 Yada, Suruga-ku, Shizuoka, Japan
| | - Yoshitaka Hamashima
- School of Pharmaceutical Sciences, University of Shizuoka 52-1 Yada, Suruga-ku, Shizuoka, Japan
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30
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Sonawane RB, Rasal NK, Bhange DS, Jagtap SV. Copper-(II) Catalyzed N
-Formylation and N
-Acylation of Aromatic, Aliphatic, and Heterocyclic Amines and a Preventive Study in the C-N Cross Coupling of Amines with Aryl Halides. ChemCatChem 2018. [DOI: 10.1002/cctc.201800609] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Rahul B. Sonawane
- Department of Chemistry; Baburaoji Gholap College; Affiliated to Savitribai Phule Pune University; Pune 411027 Sangvi India
| | - Nishant K. Rasal
- Department of Chemistry; Baburaoji Gholap College; Affiliated to Savitribai Phule Pune University; Pune 411027 Sangvi India
| | - Dattatraya S. Bhange
- Department of Chemistry; Baburaoji Gholap College; Affiliated to Savitribai Phule Pune University; Pune 411027 Sangvi India
| | - Sangeeta V. Jagtap
- Department of Chemistry; Baburaoji Gholap College; Affiliated to Savitribai Phule Pune University; Pune 411027 Sangvi India
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Ma J, Zhang F, Zhang J, Gong H. Cobalt(II)-Catalyzed N
-Acylation of Amines through a Transamidation Reaction. European J Org Chem 2018. [DOI: 10.1002/ejoc.201800253] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Juan Ma
- The Key Laboratory for Green Organic Synthesis and Application of Hunan Province; The Key Laboratory of Environmentally Friendly Chemistry and Application of the Ministry of Education College of Chemistry; Xiangtan University; 411105 Xiangtan P. R. China
| | - Feng Zhang
- College of Science; Hunan Agricultural University; 410128 Changsha P. R. China
| | - Jingyu Zhang
- The Key Laboratory for Green Organic Synthesis and Application of Hunan Province; The Key Laboratory of Environmentally Friendly Chemistry and Application of the Ministry of Education College of Chemistry; Xiangtan University; 411105 Xiangtan P. R. China
| | - Hang Gong
- The Key Laboratory for Green Organic Synthesis and Application of Hunan Province; The Key Laboratory of Environmentally Friendly Chemistry and Application of the Ministry of Education College of Chemistry; Xiangtan University; 411105 Xiangtan P. R. China
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Brahmayya M, Suen SY, Dai SA. Sulfonated graphene oxide-catalyzed N-acetylation of amines with acetonitrile under sonication. J Taiwan Inst Chem Eng 2018. [DOI: 10.1016/j.jtice.2017.12.003] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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34
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Yonekura K, Yoshimura Y, Akehi M, Tsuchimoto T. A Heteroarylamine Library: Indium-Catalyzed Nucleophilic Aromatic Substitution of Alkoxyheteroarenes with Amines. Adv Synth Catal 2018. [DOI: 10.1002/adsc.201701452] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Kyohei Yonekura
- Department of Applied Chemistry; School of Science and Technology; Meiji University; 1-1-1 Higashimita, Tama-ku Kawasaki 214-8571 Japan
| | - Yasuhiro Yoshimura
- Department of Applied Chemistry; School of Science and Technology; Meiji University; 1-1-1 Higashimita, Tama-ku Kawasaki 214-8571 Japan
| | - Mizuri Akehi
- Department of Applied Chemistry; School of Science and Technology; Meiji University; 1-1-1 Higashimita, Tama-ku Kawasaki 214-8571 Japan
| | - Teruhisa Tsuchimoto
- Department of Applied Chemistry; School of Science and Technology; Meiji University; 1-1-1 Higashimita, Tama-ku Kawasaki 214-8571 Japan
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Chowdhury AH, Ghosh S, Islam SM. Flower-like AgNPs@m-MgO as an excellent catalyst for CO2 fixation and acylation reactions under ambient conditions. NEW J CHEM 2018. [DOI: 10.1039/c8nj02286k] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Synthesis of fine chemicals from the chemical fixation of CO2 is one of the attractive research areas of today to utilise greenhouse gas CO2 in a greener pathway.
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Sanz Sharley DD, Williams JM. A selective hydration of nitriles catalysed by a Pd(OAc)2-based system in water. Tetrahedron Lett 2017. [DOI: 10.1016/j.tetlet.2017.09.034] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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37
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Zhang SL, Wan HX, Deng ZQ. A computational study on the mechanism of ynamide-mediated amide bond formation from carboxylic acids and amines. Org Biomol Chem 2017; 15:6367-6374. [PMID: 28717802 DOI: 10.1039/c7ob01378g] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This paper reports a computational study elucidating the reaction mechanism for ynamide-mediated amide bond formation from carboxylic acids and amines. The mechanisms have been studied in detail for ynamide hydrocarboxylation and the subsequent aminolysis of the resulting adduct by an amine. Ynamide hydrocarboxylation is kinetically favorable and thermodynamically irreversible, resulting in the formation of a key low-lying intermediate CP1 featuring geminal vinylic acyloxy and sulfonamide groups. The aminolysis of CP1 by the amine is proposed to be catalyzed by the carboxylic acid itself that imparts favourable bifunctional effects. In the proposed key transition state TSaminolysis-acid-iso2, the amine undergoes direct nucleophilic substitution at the acyl of CP1 to replace the enolate group in a concerted way, which is promoted by secondary hydrogen bonding of carboxylic acid with both the amine and CP1. These secondary interactions are suggested to increase the nucleophilicity of the amine and to activate the Cacyl-O bond to be cleaved, thereby stabilizing the aminolysis transition state. The concerted aminolysis mechanism is competitive with the classic stepwise nucleophilic acyl substitution mechanism that features sequential amine addition to acyl/intramolecular proton transfer/C-O bond cleavage and a key tetrahedral intermediate. Based on the mechanistic model, the carboxylic acid substrate effect and studies of more acidic CF3SO3H as the catalyst are in good agreement with the experimental observations, lending further support for the mechanistic model. The bifunctional catalytic effect of the carboxylic acid substrate may widely play a role in related amide bond-forming reactions and peptide formation chemistry.
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Affiliation(s)
- Song-Lin Zhang
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, Jiangsu Province, China.
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