1
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Visible-light photocatalysis promoted by solid- and liquid-phase immobilized transition metal complexes in organic synthesis. Coord Chem Rev 2022. [DOI: 10.1016/j.ccr.2021.214331] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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2
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Chen K, Wang Z, Ding K, Chen Y, Asano Y. Recent progress on discovery and research of aldoxime dehydratases. GREEN SYNTHESIS AND CATALYSIS 2021. [DOI: 10.1016/j.gresc.2021.04.001] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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3
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Patel RI, Sharma S, Sharma A. Cyanation: a photochemical approach and applications in organic synthesis. Org Chem Front 2021. [DOI: 10.1039/d1qo00162k] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
This review summarises the photocatalytic cyanation strategies to construct C(sp2)–CN, C(sp3)–CN and X–CN (X = N, S) bonds.
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Affiliation(s)
- Roshan I. Patel
- Department of Chemistry
- Indian Institute of Technology Roorkee
- Roorkee-247667
- India
| | - Shivani Sharma
- Department of Chemistry
- Indian Institute of Technology Roorkee
- Roorkee-247667
- India
| | - Anuj Sharma
- Department of Chemistry
- Indian Institute of Technology Roorkee
- Roorkee-247667
- India
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4
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Shekharappa, Roopesh Kumar L, Srinivasulu C, Sureshbabu VV. Dehydration of Chiral α-Amides to Chiral α-Nitriles Under the Appel Reaction Conditions. Int J Pept Res Ther 2020. [DOI: 10.1007/s10989-020-10101-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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5
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Lan L, Huang S, Liu Y, Sun B, Tian H. Preparation and odor characteristics of nitriles derived from aldehydes. FLAVOUR FRAG J 2020. [DOI: 10.1002/ffj.3581] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Liyuan Lan
- Beijing Advanced Innovation Center for Food Nutrition and Human Health Beijing Key laboratory of Flavor Chemistry Beijing Technology and Business University Beijing China
| | - Shuai Huang
- Beijing Advanced Innovation Center for Food Nutrition and Human Health Beijing Key laboratory of Flavor Chemistry Beijing Technology and Business University Beijing China
| | - Yongguo Liu
- Beijing Advanced Innovation Center for Food Nutrition and Human Health Beijing Key laboratory of Flavor Chemistry Beijing Technology and Business University Beijing China
| | - Baoguo Sun
- Beijing Advanced Innovation Center for Food Nutrition and Human Health Beijing Key laboratory of Flavor Chemistry Beijing Technology and Business University Beijing China
| | - Hongyu Tian
- Beijing Advanced Innovation Center for Food Nutrition and Human Health Beijing Key laboratory of Flavor Chemistry Beijing Technology and Business University Beijing China
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6
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Ganesan M, Nagaraaj P. Recent developments in dehydration of primary amides to nitriles. Org Chem Front 2020. [DOI: 10.1039/d0qo00843e] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Various dehydration methods available for the direct conversion of amides to the corresponding nitriles have been reviewed.
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Affiliation(s)
- Muthupandian Ganesan
- Toxicology Division
- Regional Forensic Science Laboratory
- Forensic Sciences Department
- Chennai-4
- India
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7
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Affiliation(s)
- Mohammed H. Al‐Huniti
- Research and Development PatheonThermo Fisher Scientific 309 Delaware St. Greenville Sc 29605 USA
| | - Mitchell P. Croatt
- Department of Chemistry and BiochemistryUniversity of North Carolina at Greensboro 435 Sullivan Science Building Greensboro NC 27402 USA
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8
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Meng H, Gao S, Luo M, Zeng X. Iron and Phenol Co-Catalysis for Rapid Synthesis of Nitriles under Mild Conditions. European J Org Chem 2019. [DOI: 10.1002/ejoc.201900831] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Hong Meng
- Key Laboratory of Green Chemistry and Technology (MOE); College of Chemistry; Sichuan University; 610064 Chengdu People's Republic of China
| | - Sen Gao
- Key Laboratory of Green Chemistry and Technology (MOE); College of Chemistry; Sichuan University; 610064 Chengdu People's Republic of China
| | - Meiming Luo
- Key Laboratory of Green Chemistry and Technology (MOE); College of Chemistry; Sichuan University; 610064 Chengdu People's Republic of China
| | - Xiaoming Zeng
- Key Laboratory of Green Chemistry and Technology (MOE); College of Chemistry; Sichuan University; 610064 Chengdu People's Republic of China
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9
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Li R, Gehrig DW, Ramanan C, Blom PWM, Kohl FF, Wagner M, Landfester K, Zhang KAI. Visible Light‐Mediated Conversion of Alcohols to Bromides by a Benzothiadiazole‐Containing Organic Photocatalyst. Adv Synth Catal 2019. [DOI: 10.1002/adsc.201900416] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Run Li
- College of Materials Science and EngineeringHunan University Changsha 410082 People's Republic of China
- Max Planck Institute for Polymer Research Ackermannweg 10 55128 Mainz Germany
| | - Dominik W. Gehrig
- Max Planck Institute for Polymer Research Ackermannweg 10 55128 Mainz Germany
| | - Charusheela Ramanan
- Max Planck Institute for Polymer Research Ackermannweg 10 55128 Mainz Germany
| | - Paul W. M. Blom
- Max Planck Institute for Polymer Research Ackermannweg 10 55128 Mainz Germany
| | - Fabien F. Kohl
- Max Planck Institute for Polymer Research Ackermannweg 10 55128 Mainz Germany
| | - Manfred Wagner
- Max Planck Institute for Polymer Research Ackermannweg 10 55128 Mainz Germany
| | | | - Kai A. I. Zhang
- Max Planck Institute for Polymer Research Ackermannweg 10 55128 Mainz Germany
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10
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Chibac AL, Melinte V, Brezová V, Renard E, Brosseau A, Langlois V, Versace D. Metal‐Free and Heterogeneous Photocatalytic Reduction of 4‐Nitroaniline by a Poly(Ethylene Glycol)‐Supported Eosin Dye under Visible‐Light Exposure. ChemCatChem 2019. [DOI: 10.1002/cctc.201900040] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Andreea L. Chibac
- Petru Poni Institute of Macromolecular Chemistry 41 A Gr. GhicaVoda Alley 700487 Iasi Romania
| | - Violeta Melinte
- Petru Poni Institute of Macromolecular Chemistry 41 A Gr. GhicaVoda Alley 700487 Iasi Romania
| | - Vlasta Brezová
- Institute of Physical Chemistry and Chemical Physics Faculty of Chemical and Food TechnologySlovak University of Technology in Bratislava Radlinského 9 SK-812 37 Bratislava Slovakia
| | - Estelle Renard
- Institut de Chimie et des Matériaux de Paris Est UMR 7182 CNRS - UPEC 2–8 rue Henri Dunant 94320 Thiais France
| | - Arnaud Brosseau
- ENS-Cachan, PPSM-CNRS UMR 8531Bâtiment d'Alembert 3éme étage 61 avenue du Président Wilson 94235 Cachan Cedex France
| | - Valerie Langlois
- Institut de Chimie et des Matériaux de Paris Est UMR 7182 CNRS - UPEC 2–8 rue Henri Dunant 94320 Thiais France
| | - Davy‐Louis Versace
- Institut de Chimie et des Matériaux de Paris Est UMR 7182 CNRS - UPEC 2–8 rue Henri Dunant 94320 Thiais France
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11
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Chen Y, Cantillo D, Kappe CO. Visible Light-Promoted Beckmann Rearrangements: Separating Sequential Photochemical and Thermal Phenomena in a Continuous Flow Reactor. European J Org Chem 2019; 2019:2163-2171. [PMID: 31423105 PMCID: PMC6686973 DOI: 10.1002/ejoc.201900231] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2019] [Indexed: 12/04/2022]
Abstract
The Beckmann rearrangement of oximes to amides typically requires strong acids or highly reactive, hazardous electrophiles and/or elevated temperatures to proceed. A very attractive alternative is the in situ generation of Vilsmeier-Haack reagents, by means of photoredox catalysis, as promoters for the thermal Beckmann rearrangement. Investigation of the reaction parameters for this light-induced method using a one-pot strategy has shown that the reaction is limited by the different temperatures required for each of the two sequential steps. Using a continuous flow reactor, the photochemical and thermal processes have been separated by integrating a flow photoreactor unit at low temperature for the electrophile generation with a second reactor unit, at high temperature, where the rearrangement takes place. This strategy has enabled excellent conversions and yields for a diverse set of oximes, minimizing the formation of side products obtained with the original one-pot method.
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Affiliation(s)
- Yuesu Chen
- Research Center Pharmaceutical Engineering GmbH (RCPE)Center for Continuous Flow Synthesis and Processing (CC FLOW)Inffeldgasse 138010, GrazAustria
- Institute of ChemistryUniversity of GrazHeinrichstrasse 288010, GrazAustria
| | - David Cantillo
- Research Center Pharmaceutical Engineering GmbH (RCPE)Center for Continuous Flow Synthesis and Processing (CC FLOW)Inffeldgasse 138010, GrazAustria
- Institute of ChemistryUniversity of GrazHeinrichstrasse 288010, GrazAustria
| | - C. Oliver Kappe
- Research Center Pharmaceutical Engineering GmbH (RCPE)Center for Continuous Flow Synthesis and Processing (CC FLOW)Inffeldgasse 138010, GrazAustria
- Institute of ChemistryUniversity of GrazHeinrichstrasse 288010, GrazAustria
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12
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Zhi P, Xi ZW, Wang DY, Wang W, Liang XZ, Tao FF, Shen RP, Shen YM. Vilsmeier–Haack reagent mediated synthetic transformations with an immobilized iridium complex photoredox catalyst. NEW J CHEM 2019. [DOI: 10.1039/c8nj05288c] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
The synthesis of amides, nitriles, and anhydrides via reactions under the action of the visible-light-driven in situ generated Vilsmeier–Haack reagent from CBr4 in DMF.
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Affiliation(s)
- Peng Zhi
- Key Laboratory of Clean Dyeing and Finishing Technology of Zhejiang Province
- School of Chemistry and Chemical Engineering
- Shaoxing University
- Shaoxing
- P. R. China
| | - Zi-Wei Xi
- Key Laboratory of Clean Dyeing and Finishing Technology of Zhejiang Province
- School of Chemistry and Chemical Engineering
- Shaoxing University
- Shaoxing
- P. R. China
| | - Dan-Yan Wang
- Department of Chemistry
- Zhejiang Sci-Tech University
- Hangzhou
- P. R. China
| | - Wei Wang
- School of Civil Engineering
- Shaoxing University
- Shaoxing
- P. R. China
| | - Xue-Zheng Liang
- Key Laboratory of Clean Dyeing and Finishing Technology of Zhejiang Province
- School of Chemistry and Chemical Engineering
- Shaoxing University
- Shaoxing
- P. R. China
| | - Fei-Fei Tao
- Key Laboratory of Clean Dyeing and Finishing Technology of Zhejiang Province
- School of Chemistry and Chemical Engineering
- Shaoxing University
- Shaoxing
- P. R. China
| | - Run-Pu Shen
- Key Laboratory of Clean Dyeing and Finishing Technology of Zhejiang Province
- School of Chemistry and Chemical Engineering
- Shaoxing University
- Shaoxing
- P. R. China
| | - Yong-Miao Shen
- Key Laboratory of Clean Dyeing and Finishing Technology of Zhejiang Province
- School of Chemistry and Chemical Engineering
- Shaoxing University
- Shaoxing
- P. R. China
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13
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Ban YL, Dai JL, Jin XL, Zhang QB, Liu Q. Thiocyanate radical mediated dehydration of aldoximes with visible light and air. Chem Commun (Camb) 2019; 55:9701-9704. [DOI: 10.1039/c9cc05354a] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This work describes the first example of dehydration of aldoximes by an in situ generated radical-based hydrogen abstraction reaction.
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Affiliation(s)
- Yong-Liang Ban
- State Key Laboratory of Applied Organic Chemistry
- College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou 730000
- P. R. China
| | - Jian-Ling Dai
- State Key Laboratory of Applied Organic Chemistry
- College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou 730000
- P. R. China
| | - Xiao-Ling Jin
- State Key Laboratory of Applied Organic Chemistry
- College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou 730000
- P. R. China
| | - Qing-Bao Zhang
- State Key Laboratory of Applied Organic Chemistry
- College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou 730000
- P. R. China
| | - Qiang Liu
- State Key Laboratory of Applied Organic Chemistry
- College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou 730000
- P. R. China
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14
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Tripathi S, Kapoor R, Yadav LDS. Visible Light Activated Radical Denitrative Benzoylation of β
-Nitrostyrenes: A Photocatalytic Approach to Chalcones. Adv Synth Catal 2018. [DOI: 10.1002/adsc.201701559] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Shubhangi Tripathi
- Green Synthesis Lab; Department of Chemistry; University of Allahabad; Allahabad 211002 India
| | - Ritu Kapoor
- Green Synthesis Lab; Department of Chemistry; University of Allahabad; Allahabad 211002 India
| | - Lal Dhar S. Yadav
- Green Synthesis Lab; Department of Chemistry; University of Allahabad; Allahabad 211002 India
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15
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Corrigan N, Shanmugam S, Xu J, Boyer C. Photocatalysis in organic and polymer synthesis. Chem Soc Rev 2018; 45:6165-6212. [PMID: 27819094 DOI: 10.1039/c6cs00185h] [Citation(s) in RCA: 464] [Impact Index Per Article: 77.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
This review, with over 600 references, summarizes the recent applications of photoredox catalysis for organic transformation and polymer synthesis. Photoredox catalysts are metallo- or organo-compounds capable of absorbing visible light, resulting in an excited state species. This excited state species can donate or accept an electron from other substrates to mediate redox reactions at ambient temperature with high atom efficiency. These catalysts have been successfully implemented for the discovery of novel organic reactions and synthesis of added-value chemicals with an excellent control of selectivity and stereo-regularity. More recently, such catalysts have been implemented by polymer chemists to post-modify polymers in high yields, as well as to effectively catalyze reversible deactivation radical polymerizations and living polymerizations. These catalysts create new approaches for advanced organic transformation and polymer synthesis. The objective of this review is to give an overview of this emerging field to organic and polymer chemists as well as materials scientists.
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Affiliation(s)
- Nathaniel Corrigan
- Centre for Advanced Macromolecular Design (CAMD), School of Chemical Engineering, UNSW Australia, Sydney, NSW 2052, Australia. and Australian Centre for NanoMedicine, School of Chemical Engineering, UNSW Australia, Sydney, NSW 2052, Australia
| | - Sivaprakash Shanmugam
- Centre for Advanced Macromolecular Design (CAMD), School of Chemical Engineering, UNSW Australia, Sydney, NSW 2052, Australia.
| | - Jiangtao Xu
- Centre for Advanced Macromolecular Design (CAMD), School of Chemical Engineering, UNSW Australia, Sydney, NSW 2052, Australia. and Australian Centre for NanoMedicine, School of Chemical Engineering, UNSW Australia, Sydney, NSW 2052, Australia
| | - Cyrille Boyer
- Centre for Advanced Macromolecular Design (CAMD), School of Chemical Engineering, UNSW Australia, Sydney, NSW 2052, Australia. and Australian Centre for NanoMedicine, School of Chemical Engineering, UNSW Australia, Sydney, NSW 2052, Australia
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16
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Singh M, Yadav AK, Yadav LDS, Singh R. Visible-light-activated selective synthesis of sulfoxides via thiol-ene/oxidation reaction cascade. Tetrahedron Lett 2018. [DOI: 10.1016/j.tetlet.2017.12.066] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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17
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Tripathi S, Yadav LDS. Visible-light-enabled denitrative carboxylation of β-nitrostyrenes: a direct photocatalytic approach to cinnamic acids. NEW J CHEM 2018. [DOI: 10.1039/c7nj04578f] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
A novel, highly stereoselective synthesis of (E)-cinnamic acids from β-nitrostyrenes and CBr4employing visible light photoredox catalysis has been developed.
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Affiliation(s)
- Shubhangi Tripathi
- Green Synthesis Lab
- Department of Chemistry
- University of Allahabad
- Allahabad – 211002
- India
| | - Lal Dhar S. Yadav
- Green Synthesis Lab
- Department of Chemistry
- University of Allahabad
- Allahabad – 211002
- India
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18
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19
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Yadav AK, Yadav LDS. Visible light photoredox catalysis with N-hydroxyphthalimide for [4+2] cyclization between N-methylanilines and maleimides. Tetrahedron Lett 2017. [DOI: 10.1016/j.tetlet.2016.12.077] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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20
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Kim Y, Rhee YH, Park J. Redox reaction between benzyl azides and aryl azides: concerted synthesis of aryl nitriles and anilines. Org Biomol Chem 2017; 15:1636-1641. [DOI: 10.1039/c6ob02615j] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A unique and novel reaction between benzyl azides and aryl azides is described to synthesize aryl nitriles and anilines concurrently, which is catalyzed with a photoactivated diruthenium complex.
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Affiliation(s)
- Yongjin Kim
- Department of Chemistry
- POSTECH (Pohang University of Science and Technology)
- Pohang 790-784
- Korea
| | - Young Ho Rhee
- Department of Chemistry
- POSTECH (Pohang University of Science and Technology)
- Pohang 790-784
- Korea
| | - Jaiwook Park
- Department of Chemistry
- POSTECH (Pohang University of Science and Technology)
- Pohang 790-784
- Korea
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21
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Pati Tripathi B, Mishra A, Rai P, Kumar Pandey Y, Srivastava M, Yadav S, Singh J, Singh J. A green and clean pathway: one pot, multicomponent, and visible light assisted synthesis of pyrano[2,3-c]pyrazoles under catalyst-free and solvent-free conditions. NEW J CHEM 2017. [DOI: 10.1039/c7nj01688c] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Visible light mediated, an eco-friendlier synthetic protocol for dihydropyrano[2,3-c]pyrazoles via catalyst-free and solvent-free conditions at room temperature.
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Affiliation(s)
- Bhartendu Pati Tripathi
- Environmentally Benign Synthesis Lab
- Department of Chemistry
- University of Allahabad
- Allahabad-211002
- India
| | - Anu Mishra
- Environmentally Benign Synthesis Lab
- Department of Chemistry
- University of Allahabad
- Allahabad-211002
- India
| | - Pratibha Rai
- Environmentally Benign Synthesis Lab
- Department of Chemistry
- University of Allahabad
- Allahabad-211002
- India
| | - Yogesh Kumar Pandey
- Environmentally Benign Synthesis Lab
- Department of Chemistry
- University of Allahabad
- Allahabad-211002
- India
| | | | - Snehlata Yadav
- Environmentally Benign Synthesis Lab
- Department of Chemistry
- University of Allahabad
- Allahabad-211002
- India
| | - Jaya Singh
- Department of Chemistry
- LRPG College
- Sahibabad
- India
| | - Jagdamba Singh
- Environmentally Benign Synthesis Lab
- Department of Chemistry
- University of Allahabad
- Allahabad-211002
- India
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Affiliation(s)
- Nathan A. Romero
- Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599-3290, United States
| | - David A. Nicewicz
- Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599-3290, United States
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23
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Visible light induced azidation of aldehydic C–H with carbon tetrabromide and sodium azide. Tetrahedron Lett 2016. [DOI: 10.1016/j.tetlet.2016.04.098] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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24
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Motiwala HF, Yin Q, Aubé J. Improved Schmidt Conversion of Aldehydes to Nitriles Using Azidotrimethylsilane in 1,1,1,3,3,3-Hexafluoro-2-propanol. Molecules 2015; 21:E45. [PMID: 26729081 PMCID: PMC6273554 DOI: 10.3390/molecules21010045] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2015] [Revised: 12/16/2015] [Accepted: 12/22/2015] [Indexed: 12/05/2022] Open
Abstract
The Schmidt reaction of aromatic aldehydes using a substoichiometric amount (40 mol %) of triflic acid is described. Low catalyst loading was enabled by a strong hydrogen-bond-donating solvent hexafluoro-2-propanol (HFIP). This improved protocol tolerates a broad scope of aldehydes with diverse functional groups and the corresponding nitriles were obtained in good to high yields without the need for aqueous work up.
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Affiliation(s)
- Hashim F Motiwala
- Department of Medicinal Chemistry, Delbert M. Shankel Structural Biology Center, University of Kansas, 2034 Becker Drive, West Campus, Lawrence, KS 66047, USA.
| | - Qin Yin
- Department of Medicinal Chemistry, Delbert M. Shankel Structural Biology Center, University of Kansas, 2034 Becker Drive, West Campus, Lawrence, KS 66047, USA.
| | - Jeffrey Aubé
- Department of Medicinal Chemistry, Delbert M. Shankel Structural Biology Center, University of Kansas, 2034 Becker Drive, West Campus, Lawrence, KS 66047, USA.
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26
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Yadav S, Rai P, Srivastava M, Singh J, Tiwari KP, Singh J. Atmospheric oxygen mediated synthesis of pyrazole under visible irradiation. Tetrahedron Lett 2015. [DOI: 10.1016/j.tetlet.2015.07.039] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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27
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Angnes RA, Li Z, Correia CRD, Hammond GB. Recent synthetic additions to the visible light photoredox catalysis toolbox. Org Biomol Chem 2015; 13:9152-67. [PMID: 26242759 DOI: 10.1039/c5ob01349f] [Citation(s) in RCA: 171] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The boom in visible light photoredox catalysis (VLPC) research has demonstrated that this novel synthetic approach is here to stay. VLPC enables reactive radical intermediates to be catalytically generated at ambient temperature, a feat not generally allowed through traditional pyrolysis- or radical initiator-based methodologies. VLPC has vastly extended the range of substrates and reaction schemes that have been traditionally the domain of radical reactions. In this review the photophysics background of VLPC will be briefly discussed, followed by a report on recent inroads of VLPC into decarboxylative couplings and radical C-H functionalization of aromatic compounds. The bulk of the review will be dedicated to advances in synergistic catalysis involving VLPC, namely the combination of photoredox catalysis with organocatalysis, including β-functionalization of carbonyl groups, functionalization of weak aliphatic C-H bonds, and anti-Markovnikov hydrofunctionalization of alkenes; dual catalysis with gold or with nickel, photoredox catalysis as an oxidation promoter in transition metal catalysis, and acid-catalyzed enantioselective radical addition to π systems.
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Affiliation(s)
- Ricardo A Angnes
- Chemistry Institute, State University of Campinas - Unicamp C.P. 6154, CEP. 13083-970, Campinas, São Paulo, Brazil
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28
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Patil VV, Shankarling GS. Steric-Hindrance-Induced Regio- and Chemoselective Oxidation of Aromatic Amines. J Org Chem 2015. [DOI: 10.1021/acs.joc.5b00582] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Vilas Venunath Patil
- Department of Dyestuff Technology, Institute of Chemical Technology, N. P. Marg, Matunga, Mumbai 400019, India
| | - Ganapati Subray Shankarling
- Department of Dyestuff Technology, Institute of Chemical Technology, N. P. Marg, Matunga, Mumbai 400019, India
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29
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Hari DP, König B. Synthetic applications of eosin Y in photoredox catalysis. Chem Commun (Camb) 2015; 50:6688-99. [PMID: 24699920 DOI: 10.1039/c4cc00751d] [Citation(s) in RCA: 715] [Impact Index Per Article: 79.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Eosin Y, a long known dye molecule, has recently been widely applied as a photoredox catalyst in organic synthesis. Low cost and good availability make eosin Y an attractive alternative to typical inorganic transition metal photocatalysts. We summarize the key photophysical properties of the dye and the recent synthetic applications in photoredox catalysis.
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Affiliation(s)
- Durga Prasad Hari
- Department of Chemistry and Pharmacy, Universität Regensburg, Universitätsstr. 31, 93040 Regensburg, Germany.
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30
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Affiliation(s)
- Terry McCallum
- Centre
for Catalysis, Research
and Innovation, Department of Chemistry, University of Ottawa, Ottawa, Ontario K1N 6N5, Canada
| | - Louis Barriault
- Centre
for Catalysis, Research
and Innovation, Department of Chemistry, University of Ottawa, Ottawa, Ontario K1N 6N5, Canada
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Yadav AK, Yadav LDS. Visible-light-driven electrocyclization of activated allylic amines via azomethine ylide formation. Tetrahedron Lett 2015. [DOI: 10.1016/j.tetlet.2014.12.063] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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Yadav AK, Yadav LDS. An unprecedented approach to the Gabriel amine synthesis utilizing tosylhydrazones as alkylating agents. RSC Adv 2014. [DOI: 10.1039/c4ra05929h] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
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Srivastava VP, Yadav AK, Yadav LDS. Visible-light-induced cyanation of aza-Baylis–Hillman adducts: a Michael type addition. Tetrahedron Lett 2014. [DOI: 10.1016/j.tetlet.2014.01.121] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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34
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Yadav AK, Yadav LDS. Visible-light-promoted aerobic oxidative cyclization to access 1,3,4-oxadiazoles from aldehydes and acylhydrazides. Tetrahedron Lett 2014. [DOI: 10.1016/j.tetlet.2014.02.022] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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35
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Yadav AK, Srivastava VP, Yadav LDS. An easy access to unsymmetrical ureas: a photocatalytic approach to the Lossen rearrangement. RSC Adv 2014. [DOI: 10.1039/c4ra03805c] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
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36
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Huang HM, Gao JR, Ye Q, Yu WB, Sheng WJ, Li YJ. Molecular iodine induced/1,3-dipolar cycloaddition/oxidative aromatization sequence: an efficient strategy to construct 2-substituted benzo[f]isoindole-1,3-dicarboxylates. RSC Adv 2014. [DOI: 10.1039/c4ra01593b] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A useful method for a molecular iodine induced 1,3-dipolar cycloaddition/oxidative aromatization sequence to construct 2-substituted-benzo[f]isoindole-1,3-dicarboxylates is reported.
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Affiliation(s)
- Huan-Ming Huang
- Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology
- Zhejiang University of Technology
- Hangzhou, P. R. China
| | - Jian-Rong Gao
- Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology
- Zhejiang University of Technology
- Hangzhou, P. R. China
| | - Qing Ye
- Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology
- Zhejiang University of Technology
- Hangzhou, P. R. China
| | - Wu-Bin Yu
- Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology
- Zhejiang University of Technology
- Hangzhou, P. R. China
| | - Wei-Jian Sheng
- Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology
- Zhejiang University of Technology
- Hangzhou, P. R. China
| | - Yu-Jin Li
- Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology
- Zhejiang University of Technology
- Hangzhou, P. R. China
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