1
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Shinde RD, Paraskar AR, Kumar J, Ghosh E, Paine TK, Bhadra S. Cobalt Catalyzed α-Hydroxylation of Arylacetic Acid Equivalents with Dioxygen. J Org Chem 2024; 89:9666-9671. [PMID: 38877990 DOI: 10.1021/acs.joc.4c00708] [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
A cobalt catalyst, under oxidative conditions, facilitates the single electron transfer process in N-pyridyl arylacetamides to form α-carbon-centered radicals that readily react with molecular oxygen, giving access to mandelic acid derivatives. In contrast to the known benzylic hydroxylation approaches, this approach enables chemo- and regioselective hydroxylation at a benzylic position adjacent to (N-pyridyl)amides. Mild conditions, broad scope, excellent selectivity, and wide synthetic practicality set up the merit of the reaction.
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Affiliation(s)
- Rupali Dasharath Shinde
- Inorganic Materials and Catalysis Division, CSIR-Central Salt and Marine Chemicals Research Institute, G.B. Marg, Bhavnagar, Gujarat 364002, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Anil Rajendra Paraskar
- Inorganic Materials and Catalysis Division, CSIR-Central Salt and Marine Chemicals Research Institute, G.B. Marg, Bhavnagar, Gujarat 364002, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Jogendra Kumar
- Inorganic Materials and Catalysis Division, CSIR-Central Salt and Marine Chemicals Research Institute, G.B. Marg, Bhavnagar, Gujarat 364002, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Eliza Ghosh
- School of Chemical Sciences, Indian Association for the Cultivation of Science, Kolkata 700032, India
| | - Tapan Kanti Paine
- School of Chemical Sciences, Indian Association for the Cultivation of Science, Kolkata 700032, India
| | - Sukalyan Bhadra
- Inorganic Materials and Catalysis Division, CSIR-Central Salt and Marine Chemicals Research Institute, G.B. Marg, Bhavnagar, Gujarat 364002, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
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2
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Golla S, Kokatla HP. Rongalite-Mediated Transition Metal- and Hydride-Free Chemoselective Reduction of α-Keto Esters and α-Keto Amides. J Org Chem 2022; 87:9915-9925. [PMID: 35839148 DOI: 10.1021/acs.joc.2c00936] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A transition metal- and hydride-free protocol has been developed for the chemoselective reduction of α-keto esters and α-keto amides using rongalite as a reducing agent. Here, rongalite acts as a hydride-free reducing agent via a radical mechanism. This protocol offers the synthesis of a wide range of α-hydroxy esters and α-hydroxy amides with 85-98% yields. This chemoselective method is compatible with other reducible functionalities such as halides, alkenes, amides, and nitriles. The use of inexpensive rongalite (ca. $0.03/1 g), mild reaction conditions, and gram-scale synthesis are some of the key features of this methodology. Also, cyclandelate, a vasodilator drug, has been synthesized in gram scale with 79% yield.
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Affiliation(s)
- Sivaparwathi Golla
- Department of Chemistry, National Institute of Technology Warangal, Warangal, Telangana 506004, India
| | - Hari Prasad Kokatla
- Department of Chemistry, National Institute of Technology Warangal, Warangal, Telangana 506004, India
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3
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Arginine‐Catalyzed Henry Reaction of α‐Keto Amides with Nitromethane on Water. ChemistrySelect 2022. [DOI: 10.1002/slct.202104433] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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4
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Luo X, Xie Y, Huang N, Wang L. Ugi Four-Component Reaction Based on in-situ Capture of Isocyanide and Post-Modification Tandem Reaction: One-Pot Synthesis of Nitrogen Heterocycles. CHINESE J ORG CHEM 2022. [DOI: 10.6023/cjoc202108030] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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5
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Fang ZB, Yu RR, Hao FY, Jin ZN, Liu GY, Dai GL, Yao WB, Wu JS. “On-water” reduction of α-keto amide by Hantzsch ester: A chemoselective catalyst- and additive-free way to α-hydroxy amide. Tetrahedron Lett 2021. [DOI: 10.1016/j.tetlet.2021.153524] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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6
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Antenucci A, Dughera S, Renzi P. Green Chemistry Meets Asymmetric Organocatalysis: A Critical Overview on Catalysts Synthesis. CHEMSUSCHEM 2021; 14:2785-2853. [PMID: 33984187 PMCID: PMC8362219 DOI: 10.1002/cssc.202100573] [Citation(s) in RCA: 39] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/19/2021] [Revised: 04/30/2021] [Indexed: 05/30/2023]
Abstract
Can green chemistry be the right reading key to let organocatalyst design take a step forward towards sustainable catalysis? What if the intriguing chemistry promoted by more engineered organocatalysts was carried on by using renewable and naturally occurring molecular scaffolds, or at least synthetic catalysts more respectful towards the principles of green chemistry? Within the frame of these questions, this Review will tackle the most commonly occurring organic chiral catalysts from the perspective of their synthesis rather than their employment in chemical methodologies or processes. A classification of the catalyst scaffolds based on their E factor will be provided, and the global E factor (EG factor) will be proposed as a new green chemistry metric to consider, also, the synthetic route to the catalyst within a given organocatalytic process.
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Affiliation(s)
- Achille Antenucci
- Department of ChemistryUniversity of TurinVia Pietro Giuria, 710125TurinItaly
- NIS Interdeprtmental CentreINSTM Reference CentreUniversity of TurinVia Gioacchino Quarello 15/A10135TurinItaly
| | - Stefano Dughera
- Department of ChemistryUniversity of TurinVia Pietro Giuria, 710125TurinItaly
| | - Polyssena Renzi
- Department of ChemistryUniversity of TurinVia Pietro Giuria, 710125TurinItaly
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7
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Huang J, Liang B, Chen X, Liu Y, Li Y, Liang J, Zhu W, Tang X, Li Y, Zhu Z. Rapid assembly of α-ketoamides through a decarboxylative strategy of isocyanates with α-oxocarboxylic acids under mild conditions. Org Biomol Chem 2021; 19:4783-4787. [PMID: 33982036 DOI: 10.1039/d1ob00562f] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A simple and practical method for α-ketoamide synthesis via a decarboxylative strategy of isocyanates with α-oxocarboxylic acids is described. The reaction proceeds at room temperature under mild conditions without an oxidant or an additive, showing good substrate scope and functional compatibility. Moreover, the applicability of this method was further demonstrated by the synthesis of various bioactive molecules and different application examples through a two-step one-pot operation.
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Affiliation(s)
- Junjie Huang
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, 529020, China.
| | - Baihui Liang
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, 529020, China.
| | - Xiuwen Chen
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, 529020, China.
| | - Yifu Liu
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, 529020, China.
| | - Yawen Li
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, 529020, China.
| | - Jingwen Liang
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, 529020, China.
| | - Weidong Zhu
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, 529020, China.
| | - Xiaodong Tang
- Guangdong Provincial Key Laboratory of New Drug Screening, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou 510515, China.
| | - Yibiao Li
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, 529020, China.
| | - Zhongzhi Zhu
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, 529020, China.
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8
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Mishra AA, Chaurasia SR, Bhanage BM. Ru–g-C 3N 4 as a highly active heterogeneous catalyst for transfer hydrogenation of α-keto amide into β-aminol or α-hydroxyl amide. NEW J CHEM 2020. [DOI: 10.1039/d0nj01674h] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
This work reports a sustainable route for the catalytic transfer hydrogenation (CTH) of α-keto amide into β-aminol via an efficient heterogeneous catalyst wherein ruthenium is incorporated on an active graphite sheet of a carbon nitride support (Ru–g-C3N4).
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Affiliation(s)
- Ashish A. Mishra
- Department of Chemistry
- Institute of Chemical Technology
- Mumbai 400019
- India
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9
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Hao F, Gu Z, Liu G, Yao W, Jiang H, Wu J. Catalyst- and Additive-Free Chemoselective Transfer Hydrogenation of α-Keto Amides to α-Hydroxy Amides by Sodium Formate. European J Org Chem 2019. [DOI: 10.1002/ejoc.201901073] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Feiyue Hao
- School of Pharmaceutical and Materials Engineering; Taizhou University; 318000, Zhejiang Province Jiaojiang China
| | - Zhenyu Gu
- School of Pharmaceutical and Materials Engineering; Taizhou University; 318000, Zhejiang Province Jiaojiang China
| | - Guyue Liu
- School of Pharmaceutical and Materials Engineering; Taizhou University; 318000, Zhejiang Province Jiaojiang China
| | - Wubing Yao
- School of Pharmaceutical and Materials Engineering; Taizhou University; 318000, Zhejiang Province Jiaojiang China
| | - Huajiang Jiang
- School of Pharmaceutical and Materials Engineering; Taizhou University; 318000, Zhejiang Province Jiaojiang China
| | - Jiashou Wu
- School of Pharmaceutical and Materials Engineering; Taizhou University; 318000, Zhejiang Province Jiaojiang China
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10
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Long J, Xu Y, Zhao W, Li H, Yang S. Heterogeneous Catalytic Upgrading of Biofuranic Aldehydes to Alcohols. Front Chem 2019; 7:529. [PMID: 31403043 PMCID: PMC6676456 DOI: 10.3389/fchem.2019.00529] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2019] [Accepted: 07/11/2019] [Indexed: 12/31/2022] Open
Abstract
Heterogeneous catalytic conversion of lignocellulosic components into valuable chemicals and biofuels is one of the promising ways for biomass valorization, which well meets green chemistry metrics, and can alleviate environmental and economic issues caused by the rapid depletion of fossil fuels. Among the identified biomass derivatives, furfural (FF) and 5-hydroxymethylfurfural (HMF) stand out as rich building blocks and can be directly produced from pentose and hexose sugars, respectively. In the past decades, much attention has been attracted to the selective hydrogenation of FF and 5-hydroxymethylfurfural using various heterogeneous catalysts. This review evaluates the recent progress of developing different heterogeneous catalytic materials, such as noble/non-noble metal particles, solid acids/bases, and alkali metal salts, for the efficient reduction of bio-based furanic aldehydes to alcohols. Emphasis is laid on the insights and challenges encountered in those biomass transformation processes, along with the focus on the understanding of reaction mechanisms to clarify the catalytic role of specific active species. Brief outlook is also made for further optimization of the catalytic systems and processes for the upgrading of biofuranic compounds.
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Affiliation(s)
| | | | | | - Hu Li
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, State-Local Joint Laboratory for Comprehensive Utilization of Biomass, Center for R&D of Fine Chemicals, Ministry of Education, Guizhou University, Guiyang, China
| | - Song Yang
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, State-Local Joint Laboratory for Comprehensive Utilization of Biomass, Center for R&D of Fine Chemicals, Ministry of Education, Guizhou University, Guiyang, China
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11
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Parveen N, Muthukumar A, Sekar G. Ligand‐Free and Reusable Palladium Nanoparticles‐Catalyzed Alkylation of 2‐Alkylazaarenes with Activated Ketones under Neutral Conditions. Adv Synth Catal 2019. [DOI: 10.1002/adsc.201900447] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Naziya Parveen
- Department of ChemistryIndian Institute of Technology Madras Chennai – 600036 India
| | - Alagesan Muthukumar
- Department of ChemistryIndian Institute of Technology Madras Chennai – 600036 India
| | - Govindasamy Sekar
- Department of ChemistryIndian Institute of Technology Madras Chennai – 600036 India
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12
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Muthukumar A, Rao GN, Sekar G. Zn(OTf) 2-catalyzed access to symmetrical and unsymmetrical bisindoles from α-keto amides. Org Biomol Chem 2019; 17:3921-3933. [PMID: 30941387 DOI: 10.1039/c9ob00114j] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Zn(OTf)2-catalyzed synthesis of 3,3'-bisindolyl acetamides from α-keto amides is developed. Both aromatic α-keto amides substituted with electron-donating as well as -withdrawing groups and aliphatic α-keto amides are well tolerated to provide symmetrical bisindoles in moderate to excellent yields. The chemoselective bisindolylation of the keto group of α-keto amides in the presence of a simple keto functionality is successfully achieved in good yields. The transformation is further extended to the synthesis of challenging unsymmetrical bisindoles by treating indolyl α-hydroxy amides with substituted indoles. The unsymmetrical bisindoles are isolated in good to excellent yields.
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Affiliation(s)
- Alagesan Muthukumar
- Department of Chemistry, Indian Institute of Technology Madras, Chennai, 600 036, India.
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13
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Long J, Zhao W, Xu Y, Wu W, Fang C, Li H, Yang S. Low-temperature catalytic hydrogenation of bio-based furfural and relevant aldehydes using cesium carbonate and hydrosiloxane. RSC Adv 2019; 9:3063-3071. [PMID: 35518956 PMCID: PMC9059981 DOI: 10.1039/c8ra08616h] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2018] [Accepted: 01/10/2019] [Indexed: 11/21/2022] Open
Abstract
Selective hydrogenation of unsaturated compounds is mainly carried out by using high-pressure hydrogen in the presence of a precious or transition metal catalyst. Here, we describe a benign approach to efficiently catalyze the hydrogenation of furfural (FUR) to furfuryl alcohol (FFA) over commercially available cesium carbonate using nontoxic and cheap polymethylhydrosiloxane (PMHS) as hydrogen source. Good to excellent FFA yields (≥90%) could be obtained at 25-80 °C by appropriate control of the catalyst dosage, reaction time, and the hydride amount. FUR-to-FFA hydrogenation was clarified to follow a pseudo-first order kinetics with low apparent activation energy of 20.6 kJ mol-1. Mechanistic insights manifested that PMHS was redistributed to H3SiMe, which acted as the active silane for the hydrogenation reactions. Importantly, this catalytic system was able to selectively reduce a wide range of aromatic aldehydes to the corresponding alcohols in good yields of 81-99% at 25-80 °C in 2-6 h.
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Affiliation(s)
- Jingxuan Long
- State Key Laboratory Breeding Base of Green Pesticide & Agricultural Bioengineering, Key Laboratory of Green Pesticide & Agricultural Bioengineering, Ministry of Education, State-Local Joint Laboratory for Comprehensive Utilization of Biomass, Center for Research & Development of Fine Chemicals, Guizhou University Guiyang Guizhou 550025 China +86-(851)-8829-2170 +86-(851)-8829-2171
| | - Wenfeng Zhao
- State Key Laboratory Breeding Base of Green Pesticide & Agricultural Bioengineering, Key Laboratory of Green Pesticide & Agricultural Bioengineering, Ministry of Education, State-Local Joint Laboratory for Comprehensive Utilization of Biomass, Center for Research & Development of Fine Chemicals, Guizhou University Guiyang Guizhou 550025 China +86-(851)-8829-2170 +86-(851)-8829-2171
| | - Yufei Xu
- State Key Laboratory Breeding Base of Green Pesticide & Agricultural Bioengineering, Key Laboratory of Green Pesticide & Agricultural Bioengineering, Ministry of Education, State-Local Joint Laboratory for Comprehensive Utilization of Biomass, Center for Research & Development of Fine Chemicals, Guizhou University Guiyang Guizhou 550025 China +86-(851)-8829-2170 +86-(851)-8829-2171
| | - Weibo Wu
- State Key Laboratory Breeding Base of Green Pesticide & Agricultural Bioengineering, Key Laboratory of Green Pesticide & Agricultural Bioengineering, Ministry of Education, State-Local Joint Laboratory for Comprehensive Utilization of Biomass, Center for Research & Development of Fine Chemicals, Guizhou University Guiyang Guizhou 550025 China +86-(851)-8829-2170 +86-(851)-8829-2171
| | - Chengjiang Fang
- State Key Laboratory Breeding Base of Green Pesticide & Agricultural Bioengineering, Key Laboratory of Green Pesticide & Agricultural Bioengineering, Ministry of Education, State-Local Joint Laboratory for Comprehensive Utilization of Biomass, Center for Research & Development of Fine Chemicals, Guizhou University Guiyang Guizhou 550025 China +86-(851)-8829-2170 +86-(851)-8829-2171
| | - Hu Li
- State Key Laboratory Breeding Base of Green Pesticide & Agricultural Bioengineering, Key Laboratory of Green Pesticide & Agricultural Bioengineering, Ministry of Education, State-Local Joint Laboratory for Comprehensive Utilization of Biomass, Center for Research & Development of Fine Chemicals, Guizhou University Guiyang Guizhou 550025 China +86-(851)-8829-2170 +86-(851)-8829-2171
| | - Song Yang
- State Key Laboratory Breeding Base of Green Pesticide & Agricultural Bioengineering, Key Laboratory of Green Pesticide & Agricultural Bioengineering, Ministry of Education, State-Local Joint Laboratory for Comprehensive Utilization of Biomass, Center for Research & Development of Fine Chemicals, Guizhou University Guiyang Guizhou 550025 China +86-(851)-8829-2170 +86-(851)-8829-2171
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14
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Ye R, Hao F, Liu G, Zuo Q, Deng L, Jin Z, Wu J. DMF/NaOH/H2O: a metal-free system for efficient and chemoselective reduction of α-ketoamides. Org Chem Front 2019. [DOI: 10.1039/c9qo00842j] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A metal-free method for efficient and chemoselective reduction of α-ketoamides using DMF/NaOH/H2O system has been developed.
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Affiliation(s)
- Rongcong Ye
- School of Pharmaceutical and Materials Engineering
- Taizhou University
- Taizhou 318000
- P. R. China
| | - Feiyue Hao
- School of Pharmaceutical and Materials Engineering
- Taizhou University
- Taizhou 318000
- P. R. China
| | - Guyue Liu
- School of Pharmaceutical and Materials Engineering
- Taizhou University
- Taizhou 318000
- P. R. China
| | - Qingsong Zuo
- School of Pharmaceutical and Materials Engineering
- Taizhou University
- Taizhou 318000
- P. R. China
| | - Lijun Deng
- School of Pharmaceutical and Materials Engineering
- Taizhou University
- Taizhou 318000
- P. R. China
| | - Zhengneng Jin
- School of Pharmaceutical and Materials Engineering
- Taizhou University
- Taizhou 318000
- P. R. China
| | - Jiashou Wu
- School of Pharmaceutical and Materials Engineering
- Taizhou University
- Taizhou 318000
- P. R. China
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15
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Mishra AA, Bhanage BM. Zirconium-MOF-catalysed selective synthesis of α-hydroxyamide via the transfer hydrogenation of α-ketoamide. NEW J CHEM 2019. [DOI: 10.1039/c9nj00900k] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This work reports the synthesis of α-hydroxy amide and its derivatives using zirconium-based metal–organic frameworks (Zr-MOFs).
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Affiliation(s)
- Ashish A. Mishra
- Department of Chemistry
- Institute of Chemical Technology
- Mumbai 400019
- India
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16
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Carbonate-Catalyzed Room-Temperature Selective Reduction of Biomass-Derived 5-Hydroxymethylfurfural into 2,5-Bis(hydroxymethyl)furan. Catalysts 2018. [DOI: 10.3390/catal8120633] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Catalytic reduction of 5-hydroxymethylfurfural (HMF), deemed as one of the key bio-based platform compounds, is a very promising pathway for the upgrading of biomass to biofuels and value-added chemicals. Conventional hydrogenation of HMF is mainly conducted over precious metal catalysts with high-pressure hydrogen. Here, a highly active, sustainable, and facile catalytic system composed of K2CO3, Ph2SiH2, and bio-based solvent 2-methyltetrahydrofuran (MTHF) was developed to be efficient for the reduction of HMF. At a low temperature of 25 °C, HMF could be completely converted to 2,5-bis(hydroxymethyl)furan (BHMF) in a good yield of 94% after 2 h. Moreover, a plausible reaction mechanism was speculated, where siloxane in situ formed via hydrosilylation was found to be the key species responsible for the high reactivity.
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17
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18
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Muthukumar A, Sekar G. Friedel–Crafts Hydroxyalkylation of Indoles with α-Keto Amides using Reusable K3PO4/nBu4NBr Catalytic System in Water. J Org Chem 2018; 83:8827-8839. [DOI: 10.1021/acs.joc.8b00844] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- Alagesan Muthukumar
- Department of Chemistry, Indian Institute of Technology Madras, Chennai 600036, Tamilnadu, India
| | - Govindasamy Sekar
- Department of Chemistry, Indian Institute of Technology Madras, Chennai 600036, Tamilnadu, India
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19
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Mishra AA, Bhanage BM. Nanoceria‐Catalyzed Selective Synthesis of α‐Hydroxy Amides through the Reduction of an Unusual Class of α‐Keto Amides. ASIAN J ORG CHEM 2018. [DOI: 10.1002/ajoc.201800007] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Ashish A. Mishra
- Department of ChemistryInstitute of Chemical Technology Matunga Mumbai 400019 India
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20
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Muthukumar A, Sangeetha S, Sekar G. Recent developments in functionalization of acyclic α-keto amides. Org Biomol Chem 2018; 16:7068-7083. [DOI: 10.1039/c8ob01423j] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This review describes the synthetic utility of α-keto amides to synthesize various important molecules via mono, dual and triple functionalization reactions.
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Affiliation(s)
- Alagesan Muthukumar
- Department of Chemistry
- Indian Institute of Technology Madras
- Chennai-600 036
- India
| | - Subramani Sangeetha
- Department of Chemistry
- Indian Institute of Technology Madras
- Chennai-600 036
- India
| | - Govindasamy Sekar
- Department of Chemistry
- Indian Institute of Technology Madras
- Chennai-600 036
- India
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21
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Zhang Z, Gao X, Yu H, Bi J, Zhang G. Tandem Oxidative α-Hydroxylation/β-Acetalization Reaction of β-Ketoamides and Its Applications. ACS OMEGA 2017; 2:7746-7754. [PMID: 31457331 PMCID: PMC6645376 DOI: 10.1021/acsomega.7b01526] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/14/2017] [Accepted: 10/30/2017] [Indexed: 06/10/2023]
Abstract
A tandem oxidative α-hydroxylation/β-acetalization reaction of β-ketoamides was developed in the presence of PIDA and NaOH. This reaction proceeded at 25 °C in the absence of a metal catalyst to provide 2-hydroxy-3,3-dimethoxy-N-substituted butanamides in good to excellent yields from readily available starting materials. The application of this chemistry to the construction of α-hydroxy-β-ketoamides and quinolinones was also described.
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Affiliation(s)
- Zhiguo Zhang
- Key
Laboratory of Green Chemical Media and Reactions, Ministry of Education,
School of Chemistry and Chemical Engineering, Henan Key Laboratory
of Organic Functional Molecule and Drug Innovation, Henan Normal University, 46# East of Construction Road, Xinxiang, Henan 453007, China
- Jilin
Province Key Laboratory of Organic Functional Molecular Design &
Synthesis, Northeast Normal University, Changchun, Jilin 130024, China
| | - Xiaolong Gao
- Key
Laboratory of Green Chemical Media and Reactions, Ministry of Education,
School of Chemistry and Chemical Engineering, Henan Key Laboratory
of Organic Functional Molecule and Drug Innovation, Henan Normal University, 46# East of Construction Road, Xinxiang, Henan 453007, China
| | - Haifeng Yu
- School
of Chemistry and Life Science, Anshan Normal
University, 33# Ping
An Street, Tiedong District, Anshan, Liaoning 114007, China
| | - Jingjing Bi
- Key
Laboratory of Green Chemical Media and Reactions, Ministry of Education,
School of Chemistry and Chemical Engineering, Henan Key Laboratory
of Organic Functional Molecule and Drug Innovation, Henan Normal University, 46# East of Construction Road, Xinxiang, Henan 453007, China
| | - Guisheng Zhang
- Key
Laboratory of Green Chemical Media and Reactions, Ministry of Education,
School of Chemistry and Chemical Engineering, Henan Key Laboratory
of Organic Functional Molecule and Drug Innovation, Henan Normal University, 46# East of Construction Road, Xinxiang, Henan 453007, China
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22
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23
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Zhao XX, Zhang P, Guo ZX. K2
CO3
-activated Hydrosilylation: from Redistribution of Polymethylhydrosiloxane to Selectively Reduction of Aldehydes and Ketones. ChemistrySelect 2017. [DOI: 10.1002/slct.201701592] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Xuan-Xuan Zhao
- Department of Chemistry; Renmin University of China; Beijing 100872 China
| | - Pu Zhang
- Department of Chemistry; Renmin University of China; Beijing 100872 China
| | - Zhi-Xin Guo
- Department of Chemistry; Renmin University of China; Beijing 100872 China
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24
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Kumar G, Muthukumar A, Sekar G. A Mild and Chemoselective Hydrosilylation of α-Keto Amides by Using a Cs2
CO3
/PMHS/2-MeTHF System. European J Org Chem 2017. [DOI: 10.1002/ejoc.201700374] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Affiliation(s)
- Govindharaj Kumar
- Department of Chemistry; Indian Institute of Technology Madras; 600036 Chennai India
| | - Alagesan Muthukumar
- Department of Chemistry; Indian Institute of Technology Madras; 600036 Chennai India
| | - Govindasamy Sekar
- Department of Chemistry; Indian Institute of Technology Madras; 600036 Chennai India
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25
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Muthukumar A, Sekar G. Zinc-catalyzed chemoselective alkylation of α-keto amides with 2-alkylazaarenes. Org Biomol Chem 2017; 15:691-700. [DOI: 10.1039/c6ob02432g] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
A zinc-catalyzed C(sp3)–H addition of 2-alkylazaarenes to α-keto amides to furnish azaarene incorporated α-hydroxy amides has been developed for the first time. Chemoselective alkylation of the keto functionality of the α-keto amides in the presence of isolated ketones is the key advantage of this Zn-catalyzed protocol.
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Affiliation(s)
| | - Govindasamy Sekar
- Department of Chemistry
- Indian Institute of Technology Madras
- Chennai
- India
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26
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Rathore V, Sattar M, Kumar R, Kumar S. Synthesis of Unsymmetrical Diaryl Acetamides, Benzofurans, Benzophenones, and Xanthenes by Transition-Metal-Free Oxidative Cross-Coupling of sp3 and sp2 C–H Bonds. J Org Chem 2016; 81:9206-9218. [DOI: 10.1021/acs.joc.6b01771] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Vandana Rathore
- Department of Chemistry, Indian Institute of Science Education and Research (IISER), Bhopal, MP 462 066, India
| | - Moh. Sattar
- Department of Chemistry, Indian Institute of Science Education and Research (IISER), Bhopal, MP 462 066, India
| | - Raushan Kumar
- Department of Chemistry, Indian Institute of Science Education and Research (IISER), Bhopal, MP 462 066, India
| | - Sangit Kumar
- Department of Chemistry, Indian Institute of Science Education and Research (IISER), Bhopal, MP 462 066, India
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