1
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Kumar Jha R, Rohilla K, Jain S, Parganiha D, Kumar S. Blue-Light Irradiated Mn(0)-Catalyzed Hydroxylation and C(sp 3 )-H Functionalization of Unactivated Alkanes with C(sp 2 )-H Bonds of Quinones for Alkylated Hydroxy Quinones and Parvaquone. Chemistry 2024; 30:e202303537. [PMID: 37991931 DOI: 10.1002/chem.202303537] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2023] [Revised: 11/20/2023] [Accepted: 11/22/2023] [Indexed: 11/24/2023]
Abstract
Site-selective C(sp3 )-H functionalization of unreactive hydrocarbons is always challenging due to its inherited chemical inertness, slightly different reactivity of various C-H bonds, and intrinsically high bond dissociation energies. Here, a site-selective C-H alkylation of naphthoquinone with unactivated hydrocarbons using Mn2 (CO)10 as a catalyst under blue-light (457 nm) irradiation without any external acid or base and pre-functionalization is presented. The selective C-H functionalization of tertiary over secondary and secondary over primary C(sp3 )-H bonds in abundant chemical feedstocks was achieved, and hydroxylation of quinones was realized in situ by employing the developed methodology. This protocol provides a new catalytic system for the direct construction of high-value-added compounds, namely, parvaquone (a commercially available drug used to treat theileriosis) and its derivatives under ambient reaction conditions. Moreover, this operationally simple protocol applies to various linear-, branched-, and cyclo-alkanes with high degrees of site selectivity under blue-light irradiated conditions and could provide rapid and straightforward access to versatile methodologies for upgrading feedstock chemicals. Mechanistic insight by radical trapping, radical scavenging, EPR, and other controlled experiments well corroborated with DFT studies suggest that the reaction proceeds by a radical pathway.
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Affiliation(s)
- Raushan Kumar Jha
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal By-pass Road, Bhauri, Bhopal, Madhya Pradesh, 462066, India
| | - Komal Rohilla
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal By-pass Road, Bhauri, Bhopal, Madhya Pradesh, 462066, India
| | - Saket Jain
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal By-pass Road, Bhauri, Bhopal, Madhya Pradesh, 462066, India
| | - Devendra Parganiha
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal By-pass Road, Bhauri, Bhopal, Madhya Pradesh, 462066, India
| | - Sangit Kumar
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal By-pass Road, Bhauri, Bhopal, Madhya Pradesh, 462066, India
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2
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Zhao Y, Hou X, He M, Wang Y, Yang S, Wang W, Bao M, Yu X. Visible-Light-Driven α-Substituted Amines Enabled by In Situ Formation of Amine Substrate Aggregates. Org Lett 2023; 25:7344-7348. [PMID: 37791683 DOI: 10.1021/acs.orglett.3c02826] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/05/2023]
Abstract
A visible-light-driven, photocatalyst-free, air-promoted, α-substituted reaction of amines with varying nucleophiles is described. The amine substrate aggregates formed in situ through physical π-π stacking by H2O regulation in organic solvent can absorb visible light and then generate iminium ion intermediates, which undergo nucleophilic substitution reactions with varying nucleophiles to afford α-substituted amines. This reaction features catalyst-free, good functional group tolerance, simple operation procedure, and green reaction conditions.
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Affiliation(s)
- Yuqian Zhao
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian, Liaoning 116023, China
| | - Xiaoli Hou
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian, Liaoning 116023, China
| | - Min He
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian, Liaoning 116023, China
- School of Pharmaceutical Engineering, Shenyang Pharmaceutical University, 103 Wenhua Road, Shenhe District, Shenyang 110016, China
| | - Yi Wang
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian, Liaoning 116023, China
| | - Shilei Yang
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian, Liaoning 116023, China
| | - Wanhui Wang
- School of Chemical Engineering, Dalian University of Technology, Panjin 124221, China
| | - Ming Bao
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian, Liaoning 116023, China
| | - Xiaoqiang Yu
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian, Liaoning 116023, China
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3
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Molnár M, Kappe CO, Ötvös SB. Merger of Visible Light-Driven Chiral Organocatalysis and Continuous Flow Chemistry: An Accelerated and Scalable Access into Enantioselective α-Alkylation of Aldehydes. Adv Synth Catal 2023; 365:1660-1670. [PMID: 38515505 PMCID: PMC10952295 DOI: 10.1002/adsc.202300289] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2023] [Revised: 04/21/2023] [Indexed: 03/23/2024]
Abstract
The electron donor-acceptor complex-enabled asymmetric photochemical alkylation strategy holds potential to attain elusive chiral α-alkylated aldehydes without an external photoredox catalyst. The photosensitizer-free conditions are beneficial concerning process costs and sustainability. However, lengthy organocatalyst preparation steps as well as limited productivity and difficult scalability render the current approaches unsuitable for synthesis on enlarged scales. Inspired by these limitations, a protocol was developed for the enantioselective α-alkylation of aldehydes based on the synergistic combination of visible light-driven asymmetric organocatalysis and a controlled continuous flow reaction environment. With the aim to reduce process costs, a commercially available chiral catalyst has been exploited to achieve photosensitizer-free enantioselective α-alkylations using phenacyl bromide derivates as alkylating agents. As a result of elaborate optimization and process development, the present flow strategy furnishes an accelerated and inherently scalable entry into enantioenriched α-alkylated aldehydes including a chiral key intermediate of the antirheumatic esonarimod.
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Affiliation(s)
- Márk Molnár
- Institute of ChemistryUniversity of GrazNAWI Graz, Heinrichstrasse 28A-8010GrazAustria
- Servier Research Institute of Medicinal ChemistryZáhony u. 71031BudapestHungary
| | - C. Oliver Kappe
- Institute of ChemistryUniversity of GrazNAWI Graz, Heinrichstrasse 28A-8010GrazAustria
- Center for Continuous Flow Synthesis and Processing (CC FLOW)Research Center Pharmaceutical Engineering GmbH (RCPE)Inffeldgasse 13A-8010GrazAustria
| | - Sándor B. Ötvös
- Institute of ChemistryUniversity of GrazNAWI Graz, Heinrichstrasse 28A-8010GrazAustria
- Center for Continuous Flow Synthesis and Processing (CC FLOW)Research Center Pharmaceutical Engineering GmbH (RCPE)Inffeldgasse 13A-8010GrazAustria
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4
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Visible Light Induced C-H/N-H and C-X Bonds Reactions. REACTIONS 2023. [DOI: 10.3390/reactions4010012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/06/2023] Open
Abstract
Herein, we report efficient visible light-induced photoredox reactions of C–H/N–H and C–X Bonds. These methods have provided access to varied portfolio of synthetically important γ-ketoesters, azaspirocyclic cyclohexadienones spirocyclohexadienones, multisubstituted benzimidazole derivatives, substituted N,2-diarylacetamide, 2-arylpyridines and 2-arylquinolines in good yields and under mild conditions. Moreover, we have successfully discussed the construction through visible light-induction by an intermolecular radical addition, dearomative cyclization, aryl migration and desulfonylation. Similarly, we also spotlight the visible light-catalyzed aerobic C–N bond activation from well-known building blocks through cyclization, elimination and aromatization. The potential use of a wide portfolio of simple ketones and available primary amines has made this transformation very attractive.
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5
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Visible light-driven photocatalytic benzoyl azides formation from benzotrichlorides using rhodium ion modified TiO2. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY 2023. [DOI: 10.1016/j.jpap.2023.100170] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/11/2023] Open
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6
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Yetra SR, Schmitt N, Tambar UK. Catalytic photochemical enantioselective α-alkylation with pyridinium salts. Chem Sci 2023; 14:586-592. [PMID: 36741522 PMCID: PMC9847668 DOI: 10.1039/d2sc05654b] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2022] [Accepted: 11/28/2022] [Indexed: 12/14/2022] Open
Abstract
We have developed a chiral amine catalyzed enantioselective α-alkylation of aldehydes with amino acid derived pyridinium salts as alkylating reagents. The reaction proceeds in the presence of visible light and in the absence of a photocatalyst via a light activated charge-transfer complex. We apply this photochemical stereoconvergent process to the total synthesis of the lignan natural products (-)-enterolactone and (-)-enterodiol. Mechanistic studies support the ground-state complexation of the reactive components followed by divergent charge-transfer processes involving catalyst-controlled radical chain and in-cage radical combination steps.
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Affiliation(s)
- Santhivardhana Reddy Yetra
- Department of Biochemistry, The University of Texas Southwestern Medical Center5323 Harry Hines BoulevardDallasTexas 75390-9038USA
| | - Nathan Schmitt
- Department of Biochemistry, The University of Texas Southwestern Medical Center5323 Harry Hines BoulevardDallasTexas 75390-9038USA
| | - Uttam K. Tambar
- Department of Biochemistry, The University of Texas Southwestern Medical Center5323 Harry Hines BoulevardDallasTexas 75390-9038USA
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7
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Kubanaliev T, Eroglu Z, Ozer MS, Metin Ö. The effect of N-vacancy on the photocatalytic activity of graphitic carbon nitride in the oxidative Mannich reaction. Catal Sci Technol 2023. [DOI: 10.1039/d3cy00046j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/31/2023]
Abstract
N-vacancy g-CN was used in Mannich oxidative reaction as a photocatalyst, having mid-gap states that enhance reaction kinetics. This facile photocatalyst enabled successful formation of challenging THIQ with EWG and chemo-selectivity on C–C bond.
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8
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Zhang T, Qiao C, Xia L, Yuan T, Wei Q, Yang Q, Chen S. Triphenylamine-based cadmium coordination polymer as a heterogeneous photocatalyst for visible-light-driven α-alkylation of aldehydes. J SOLID STATE CHEM 2022. [DOI: 10.1016/j.jssc.2022.123241] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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9
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Hussain Y, Sharma D, Kotwal N, Kumar I, Chauhan P. Stereoselective Oxidative Mannich Reaction of Ketones with Dihydrodibenzo-Oxazepines via a Merger of Photoredox-/Electro-Catalysis with Organocatalysis. CHEMSUSCHEM 2022; 15:e202200415. [PMID: 35343096 DOI: 10.1002/cssc.202200415] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/25/2022] [Revised: 03/25/2022] [Indexed: 06/14/2023]
Abstract
An enantio- and diastereoselective sp3 -sp3 coupling of acyclic/cyclic ketones with dihydrodibenzo-oxazepines has been developed by merging visible light photo-redox- or electro-catalysis with organocatalysis. This approach parallelly utilizes Eosin Y or graphite electrodes for the co-catalyst-free oxidative conversion of dihydrodibenzo-oxazepines to oxazepines, followed by L-Proline catalyzed direct Mannich-type reaction with ketones. A series of enantioenriched dihydrodibenzo-oxazepines have been prepared in high yields and enantioselectivity. This method shows substantial advantages over the existing protocols by using potentially safer starting materials and cheap commercially available catalysts.
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Affiliation(s)
- Yaseen Hussain
- Department of Chemistry, Indian Institute of Technology Jammu Jagti, NH-44, Nagrota Bypass, Jammu, 181221, J&K, India
| | - Deepak Sharma
- Department of Chemistry, Indian Institute of Technology Jammu Jagti, NH-44, Nagrota Bypass, Jammu, 181221, J&K, India
| | - Namrata Kotwal
- Department of Chemistry, Indian Institute of Technology Jammu Jagti, NH-44, Nagrota Bypass, Jammu, 181221, J&K, India
| | - Indresh Kumar
- Department of Chemistry, Birla Institute of Technology and Science, Pilani, 333031, Rajasthan, India
| | - Pankaj Chauhan
- Department of Chemistry, Indian Institute of Technology Jammu Jagti, NH-44, Nagrota Bypass, Jammu, 181221, J&K, India
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10
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Del Vecchio A, Sinibaldi A, Nori V, Giorgianni G, Di Carmine G, Pesciaioli F. Synergistic Strategies in Aminocatalysis. Chemistry 2022; 28:e202200818. [PMID: 35666172 PMCID: PMC9539941 DOI: 10.1002/chem.202200818] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2022] [Indexed: 12/20/2022]
Abstract
Synergistic catalysis offers the unique possibility of simultaneous activation of both the nucleophile and the electrophile in a reaction. A requirement for this strategy is the stability of the active species towards the reaction conditions and the two concerted catalytic cycles. Since the beginning of the century, aminocatalysis has been established as a platform for the stereoselective activation of carbonyl compounds through HOMO‐raising or LUMO‐lowering. The burgeoning era of aminocatalysis has been driven by a deep understanding of these activation and stereoinduction modes, thanks to the introduction of versatile and privileged chiral amines. The aim of this review is to cover recent developments in synergistic strategies involving aminocatalysis in combination with organo‐, metal‐, photo‐, and electro‐catalysis, focusing on the evolution of privileged aminocatalysts architectures.
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Affiliation(s)
- Antonio Del Vecchio
- Department of Physical and Chemical Sciences Università degli Studi, dell'Aquila, via Vetoio, 67100, L'Aquila, Italy
| | - Arianna Sinibaldi
- Department of Physical and Chemical Sciences Università degli Studi, dell'Aquila, via Vetoio, 67100, L'Aquila, Italy
| | - Valeria Nori
- Department of Physical and Chemical Sciences Università degli Studi, dell'Aquila, via Vetoio, 67100, L'Aquila, Italy
| | - Giuliana Giorgianni
- Department of Physical and Chemical Sciences Università degli Studi, dell'Aquila, via Vetoio, 67100, L'Aquila, Italy
| | - Graziano Di Carmine
- Department of Chemical, Pharmaceutical and Agricultural Sciences Università degli Studi di Ferrara, Via Fossato di Mortara 17, 44121, Ferrara, Italy
| | - Fabio Pesciaioli
- Department of Physical and Chemical Sciences Università degli Studi, dell'Aquila, via Vetoio, 67100, L'Aquila, Italy
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11
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Nair VV, Arunprasath D, Solai P, Sekar G. Synergistic Dual Amine/Transition Metal Catalysis ‐ Recent Advances. European J Org Chem 2022. [DOI: 10.1002/ejoc.202200244] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
| | | | - Pandidurai Solai
- IIT Madras: Indian Institute of Technology Madras Department of Chemistry INDIA
| | - Govindasamy Sekar
- Indian Institute of Technology Madras Department of Chemistry IIT Campus 600 036 Chennai INDIA
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12
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Mondal S, Dumur F, Gigmes D, Sibi MP, Bertrand MP, Nechab M. Enantioselective Radical Reactions Using Chiral Catalysts. Chem Rev 2022; 122:5842-5976. [DOI: 10.1021/acs.chemrev.1c00582] [Citation(s) in RCA: 28] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Shovan Mondal
- Department of Chemistry, Syamsundar College, Shyamsundar 713424, West Bengal, India
| | - Frédéric Dumur
- Aix Marseille Univ, CNRS, Institut de Chimie Radicalaire UMR 7273, F-13390e Marseille, France
| | - Didier Gigmes
- Aix Marseille Univ, CNRS, Institut de Chimie Radicalaire UMR 7273, F-13390e Marseille, France
| | - Mukund P. Sibi
- Department of Chemistry and Biochemistry North Dakota State University, Fargo, North Dakota 58108, United States
| | - Michèle P. Bertrand
- Aix Marseille Univ, CNRS, Institut de Chimie Radicalaire UMR 7273, F-13390e Marseille, France
| | - Malek Nechab
- Aix Marseille Univ, CNRS, Institut de Chimie Radicalaire UMR 7273, F-13390e Marseille, France
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13
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Yao W, Bergamino EAB, Ngai MY. Asymmetric Photocatalysis Enabled by Chiral Organocatalysts. ChemCatChem 2022; 14:e202101292. [PMID: 36204304 PMCID: PMC9531867 DOI: 10.1002/cctc.202101292] [Citation(s) in RCA: 27] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Visible-light photocatalysis has advanced as a versatile tool in organic synthesis. However, attaining precise stereocontrol in photocatalytic reactions has been a longstanding challenge due to undesired photochemical background reactions and the involvement of highly reactive radicals or radical ion intermediates generated under photocatalytic conditions. To address this problem and expand the synthetic utility of photocatalytic reactions, a number of innovative strategies, including mono- and dual-catalytic approaches, have recently emerged. Of these, exploiting chiral organocatalysis, such as enamine catalysis, iminium-ion catalysis, Brønsted acid/base catalysis, and N-heterocyclic carbene catalysis, to induce chirality transfer of photocatalytic reactions has been widely explored. This Review aims to provide a current, comprehensive overview of asymmetric photocatalytic reactions enabled by chiral organocatalysts published through June 2021. The substrate scope, advantages, limitations, and proposed reaction mechanisms of each reaction are discussed. This review should serve as a reference for the development of visible-light-induced asymmetric photocatalysis and promote the improvement of the chemical reactivity and stereoselectivity of these reactions.
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Affiliation(s)
- Wang Yao
- Department of Chemistry, the State University of New York at Stony Brook, Stony Brook, New York, 11794
| | | | - Ming-Yu Ngai
- Department of Chemistry, the State University of New York at Stony Brook, Stony Brook, New York, 11794,Institute of Chemical Biology and Drug Discovery, the State University of New York at Stony Brook, Stony Brook, New York 11794,corresponding author (Prof. Dr. Ming-Yu Ngai): , Twitter accounts: @NgaiLab; @StonyBrookChem
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14
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Ma J, Huang L, Zhou B, Yao L. Construction and Catalysis Advances of Inorganic Chiral Nanostructures. ACTA CHIMICA SINICA 2022. [DOI: 10.6023/a22070308] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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15
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Guo X, Shao BR, Jiang WF, Shi L. The Photocatalyst-Free Cross-Dehydrogenative Coupling Reaction Enabled by Visible-Light Direct Excitation of Substrate. J Org Chem 2021; 86:15743-15752. [PMID: 34694134 DOI: 10.1021/acs.joc.1c01775] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A new photocatalyst-free strategy for the cross-dehydrogenative C-C and C-P coupling reaction has been described. This protocol provides a concise method to synthesize various 1-substituted tetrahydroisoquinoline (THIQ) derivatives enabled by visible-light direct excitation of substrates without using any photocatalyst. Moreover, a wide substrate scope demonstrated good synthetic versatility and practicality.
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Affiliation(s)
- Xuan Guo
- School of Chemical Engineering, Dalian University of Technology, Dalian, 116024, P. R. China
| | - Bing-Ru Shao
- School of Chemical Engineering, Dalian University of Technology, Dalian, 116024, P. R. China
| | - Wen-Feng Jiang
- School of Chemical Engineering, Dalian University of Technology, Dalian, 116024, P. R. China
| | - Lei Shi
- School of Chemical Engineering, Dalian University of Technology, Dalian, 116024, P. R. China
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16
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Zheng JL, Wu D, Lin N, Liu YP, Wang L, Zhu XT, Hao WJ, Wang SL, Jiang B. Kharasch-type photocyclization of 1,7-diynes for the stereospecific synthesis of tetrahydronaphthalen-1-ols. Tetrahedron Lett 2021. [DOI: 10.1016/j.tetlet.2021.153485] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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17
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Chandra P. Modern Trends in the Applications of Perovskites for Selective Organic Transformations. ChemistrySelect 2021. [DOI: 10.1002/slct.202101434] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Affiliation(s)
- Prakash Chandra
- Department of Chemistry School of Technology Pandit Deendayal Petroleum University Knowledge Corridor, Raisan Village Gandinagar Gujarat 382007
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18
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Martin JS, Zeng X, Chen X, Miller C, Han C, Lin Y, Yamamoto N, Wang X, Yazdi S, Yan Y, Beard MC, Yan Y. A Nanocrystal Catalyst Incorporating a Surface Bound Transition Metal to Induce Photocatalytic Sequential Electron Transfer Events. J Am Chem Soc 2021; 143:11361-11369. [PMID: 34286970 DOI: 10.1021/jacs.1c00503] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Heterogeneous photocatalysis is less common but can provide unique avenues for inducing novel chemical transformations and can also be utilized for energy transductions, i.e., the energy in the photons can be captured in chemical bonds. Here, we developed a novel heterogeneous photocatalytic system that employs a lead-halide perovskite nanocrystal (NC) to capture photons and direct photogenerated holes to a surface bound transition metal Cu-site, resulting in a N-N heterocyclization reaction. The reaction starts from surface coordinated diamine substrates and requires two subsequent photo-oxidation events per reaction cycle. We establish a photocatalytic pathway that incorporates sequential inner sphere electron transfer events, photons absorbed by the NC generate holes that are sequentially funneled to the Cu-surface site to perform the reaction. The photocatalyst is readily prepared via a controlled cation-exchange reaction and provides new opportunities in photodriven heterogeneous catalysis.
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Affiliation(s)
- Jovan San Martin
- Department of Chemistry and Biochemistry, San Diego State University, San Diego, California 92182, United States
| | - Xianghua Zeng
- Department of Chemistry and Biochemistry, San Diego State University, San Diego, California 92182, United States.,College of Biological, Chemical Science and Engineering, Jiaxing University, Jiaxing 314001, China
| | - Xihan Chen
- National Renewable Energy Laboratory, Golden, Colorado 80401, United States
| | - Collin Miller
- Department of Chemistry and Biochemistry, San Diego State University, San Diego, California 92182, United States
| | - Chuang Han
- Department of Chemistry and Biochemistry, San Diego State University, San Diego, California 92182, United States
| | - Yixiong Lin
- Department of Chemistry and Biochemistry, San Diego State University, San Diego, California 92182, United States
| | - Nobuyuki Yamamoto
- Department of Chemistry and Biochemistry, San Diego State University, San Diego, California 92182, United States
| | - Xiaoming Wang
- Department of Physics and Astronomy, and Wright Center for Photovoltaics Innovation and Commercialization (PVIC), University of Toledo, Toledo, Ohio 43606, United States
| | - Sadegh Yazdi
- Renewable & Sustainable Energy Institute, University of Colorado Boulder, Boulder, Colorado 80309, United States
| | - Yanfa Yan
- Department of Physics and Astronomy, and Wright Center for Photovoltaics Innovation and Commercialization (PVIC), University of Toledo, Toledo, Ohio 43606, United States
| | - Matthew C Beard
- National Renewable Energy Laboratory, Golden, Colorado 80401, United States
| | - Yong Yan
- Department of Chemistry and Biochemistry, San Diego State University, San Diego, California 92182, United States
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19
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Liu X, Guo Z, Che Y, Bai R, Chi Y, Guo C, Xing H. Pillared Metal-Organic Framework Initiating Intermolecular Atom-Transfer Radical Addition via Visible-Light-Induced Electron Transfer Activation of Haloalkanes. ACS APPLIED MATERIALS & INTERFACES 2021; 13:34114-34123. [PMID: 34269044 DOI: 10.1021/acsami.1c06391] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Herein, a novel metal-organic framework (MOF) with a pillared-layer structure was rationally synthesized to initiate intermolecular atom-transfer radical addition (ATRA) via photoinduced electron transfer activation of haloalkanes. The MOF synthesized via the controllable pillared-layer method is of excellent visible-light absorption and high chemical stability. Photocatalytic experiments show the atom transfer of various alkyl halides (R-X, X = Cl/Br/I) onto diverse olefins was successfully achieved to produce functional ATRA products. The mechanism and experimental investigations reveal the prepared MOF serves as an efficient photocatalyst with strong reduction potential to activate haloalkane substrates via photoinduced electron transfer, generating a highly reactive alkyl radical to trigger the ATRA reaction. Key events in the ATRA reaction, including alkyl radical photogeneration as well as halide transfer, have been further regulated to achieve preferable photocatalytic performance with higher yields, shorter reaction time, and desirable cycling capability. It is notable that the work is the first report on photoinduced electron transfer activation of halides by a MOF photocatalyst for the ATRA reaction, providing a new blueprint for MOFs to develop photoinduced radical reactions.
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Affiliation(s)
- Xin Liu
- Laboratory of Advanced Energy Materials, College of Chemistry, Northeast Normal University, Changchun 130021, P. R. China
| | - Zhifen Guo
- Laboratory of Advanced Energy Materials, College of Chemistry, Northeast Normal University, Changchun 130021, P. R. China
| | - Yan Che
- Laboratory of Advanced Energy Materials, College of Chemistry, Northeast Normal University, Changchun 130021, P. R. China
| | - Rong Bai
- Laboratory of Advanced Energy Materials, College of Chemistry, Northeast Normal University, Changchun 130021, P. R. China
| | - Yanhong Chi
- Laboratory of Advanced Energy Materials, College of Chemistry, Northeast Normal University, Changchun 130021, P. R. China
| | - Chunyi Guo
- Laboratory of Advanced Energy Materials, College of Chemistry, Northeast Normal University, Changchun 130021, P. R. China
| | - Hongzhu Xing
- Laboratory of Advanced Energy Materials, College of Chemistry, Northeast Normal University, Changchun 130021, P. R. China
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20
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Abstract
This review summarizes the current status of the application of metal halide perovskites (MHPs) as photocatalysts in organic syntheses/transformations. It is shown that the optimal and unique electronic properties of MHPs can be advantageously used in several reaction types providing pros with respect to traditional photocatalysts. While still being at infancy, such field of application of MHPs as effective photocatalysts will for sure become a central research topic in the forthcoming years, thanks also to their rich structural and chemical tunability, which may provide tailored materials for most of the envisaged organic reactions.
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Mastandrea MM, Pericàs MA. Photoredox Dual Catalysis: A Fertile Playground for the Discovery of New Reactivities. Eur J Inorg Chem 2021. [DOI: 10.1002/ejic.202100455] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Marco M. Mastandrea
- Institute of Chemical Research of Catalonia (ICIQ) The Barcelona Instutite of Science and Technology (BIST) Avda. Països Catalans 16 43007 Tarragona Spain
| | - Miquel A. Pericàs
- Institute of Chemical Research of Catalonia (ICIQ) The Barcelona Instutite of Science and Technology (BIST) Avda. Països Catalans 16 43007 Tarragona Spain
- Department de Química Inorgànica i Orgànica Universitat de Barcelona c/Martí i Franqués 1–11 08028 Barcelona Spain
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22
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Yuan J, Liu H, Wang S, Li X. How to apply metal halide perovskites to photocatalysis: challenges and development. NANOSCALE 2021; 13:10281-10304. [PMID: 34096559 DOI: 10.1039/d0nr07716j] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Semiconductor photocatalysts are widely used in environmental remediation and energy conversion processes that affect social development. These processes involve, for example, hydrogen production from water splitting, carbon dioxide reduction, pollutant degradation, and the conversion of raw organic chemical materials into high-value-added chemicals. Metal halide perovskites (MHPs) have become a new class of promising cheap and easy to manufacture candidate materials for use in photocatalytic semiconductors due to their advantages of high extinction coefficients, optimal band gaps, high photoluminescence quantum yields, and long electron-hole diffusion lengths. However, their unstable ion-bonded crystal structures (very low theoretical decomposition energy barriers) limit their widespread application. In this review, we introduce the physical properties of MHP materials suitable for photocatalysis, and MHP-based photocatalytic particle suspension systems, photoelectrode thin film systems, and photovoltaic-photo(electro)chemical systems. Then, numerous studies realizing efficient and stable photocatalytic water splitting, carbon dioxide reduction, organic conversion, and other reactions involving MHP materials were highlighted. In addition, we conducted rigorous analysis of the potential problems that could hinder progress in this new scientific research field, such as Pb element toxicity and material instability. Finally, we outline the potential opportunities and directions for photocatalysis research based on MHPs.
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Affiliation(s)
- Jia Yuan
- Tianjin University, School of Chemical Engineering and Technology, Tianjin 300072, China.
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23
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A Sustainable Improvement of ω-Bromoalkylphosphonates Synthesis to Access Novel KuQuinones. ORGANICS 2021. [DOI: 10.3390/org2020010] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
Owing to the attractiveness of organic phosphonic acids and esters in the pharmacological field and in the functionalization of conductive metal-oxides, the research of effective synthetic protocols is pivotal. Among the others, ω-bromoalkylphosphonates are gaining particular attention because they are useful building blocks for the tailored functionalization of complex organic molecules. Hence, in this work, the optimization of Michaelis–Arbuzov reaction conditions for ω-bromoalkylphosphonates has been performed, to improve process sustainability while maintaining good yields. Synthesized ω-bromoalkylphosphonates have been successfully adopted for the synthesis of new KuQuinone phosphonate esters and, by hydrolysis, phosphonic acid KuQuinone derivatives have been obtained for the first time. Considering the high affinity with metal-oxides, KuQuinones bearing phosphonic acid terminal groups are promising candidates for biomedical and photo(electro)chemical applications.
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24
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Huang C, Qiao J, Ci RN, Wang XZ, Wang Y, Wang JH, Chen B, Tung CH, Wu LZ. Quantum dots enable direct alkylation and arylation of allylic C(sp3)–H bonds with hydrogen evolution by solar energy. Chem 2021. [DOI: 10.1016/j.chempr.2021.01.019] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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25
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Liu A, Ma D, Qian Y, Li J, Zhai S, Wang Y, Chen C. A powerful azomethine ylide route mediated by TiO 2 photocatalysis for the preparation of polysubstituted imidazolidines. Org Biomol Chem 2021; 19:2192-2197. [PMID: 33625413 DOI: 10.1039/d0ob02277b] [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
Lewis- and Brønsted-acid catalyzed 1,3-dipolar cycloaddition between azomethine ylides and unsaturated compounds is an important strategy to construct five-membered N-heterocycles. However, such a catalytic route usually demands substrates with an electron-withdrawing group (EWG) to facilitate the reactivity. Herein, we report a TiO2 photocatalysis strategy that can conveniently prepare five-membered N-heterocyclic imidazolidines from a common imine (N-benzylidenebenzylamine) and alcohols along the route of 1,3-dipolaron azomethine ylide but without pre-installed EWG substituents on the substrates. Our EPR results uncovered the previously unknown mutual interdependence between an azomethine ylide and TiO2 photo-induced hvb+/ecb- pair. This transformation exhibited a broad scope with 21 successful examples and could be scaled up to the gram level.
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Affiliation(s)
- Anan Liu
- Basic Experimental Centre for Natural Science, University of Science and Technology Beijing, 30 Xueyuan Road, Beijing, 100083, China and School of Chemistry and Biological Engineering, University of Science and Technology Beijing, 30 Xueyuan Road, Beijing, 100083, China
| | - Dongge Ma
- Department of Chemistry, College of Chemistry and Materials Engineering, Beijing Technology and Business University, Fucheng Road 11, Beijing, 100048, China.
| | - Yuhang Qian
- Department of Chemistry, College of Chemistry and Materials Engineering, Beijing Technology and Business University, Fucheng Road 11, Beijing, 100048, China.
| | - Jundan Li
- Department of Chemistry, College of Chemistry and Materials Engineering, Beijing Technology and Business University, Fucheng Road 11, Beijing, 100048, China.
| | - Shan Zhai
- Department of Chemistry, College of Chemistry and Materials Engineering, Beijing Technology and Business University, Fucheng Road 11, Beijing, 100048, China.
| | - Yi Wang
- Department of Chemistry, College of Chemistry and Materials Engineering, Beijing Technology and Business University, Fucheng Road 11, Beijing, 100048, China.
| | - Chuncheng Chen
- Key Laboratory of Photochemistry, Institute of Chemistry, Chinese Academy of Sciences, Zhongguancun North First Street 2, Beijing, 100190, China
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26
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Rathnayake MD, Weaver JD. Coupling Photocatalysis and Substitution Chemistry to Expand and Normalize Redox-Active Halides. Org Lett 2021; 23:2036-2041. [PMID: 33634699 DOI: 10.1021/acs.orglett.1c00173] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Photocatalysis can generate radicals in a controlled fashion and has become an important synthetic strategy. However, limitations due to the reducibility of alkyl halides prevent their broader implementation. Herein we explore the use of nucleophiles that can substitute the halide and serve as an electron capture motif that normalize the variable redox potentials across substrates. When used with photocatalysis, bench-stable, commercially available collidinium salts prove to be excellent radical precursors with a broad scope.
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Affiliation(s)
- Manjula D Rathnayake
- Department of Chemistry, Oklahoma State University, 107 Physical Sciences, Stillwater, Oklahoma 74078, United States
| | - Jimmie D Weaver
- Department of Chemistry, Oklahoma State University, 107 Physical Sciences, Stillwater, Oklahoma 74078, United States
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27
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Firoozi S, Hosseini-Sarvari M. Nanosized CdS as a Reusable Photocatalyst: The Study of Different Reaction Pathways between Tertiary Amines and Aryl Sulfonyl Chlorides through Visible-Light-Induced N-Dealkylation and C-H Activation Processes. J Org Chem 2021; 86:2117-2134. [PMID: 33464894 DOI: 10.1021/acs.joc.0c02263] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
It has been found that the final products of the reaction of sulfonyl chlorides and tertiary amines in the presence of cadmium sulfide nanoparticles under visible light irradiation are highly dependent on the applied reaction conditions. Interestingly, with the change of a reaction condition, different pathways were conducted (visible-light-induced N-dealkylation or sp3 and sp2 C-H activation) that lead to different products such as secondary amines and various sulfonyl compounds. Remarkably, all of these reactions were performed under visible light irradiation and an air atmosphere without any additive or oxidant in benign solvents or under solvent-free conditions. During this study, the CdS nanoparticles as affordable, heterogeneous, and recyclable photocatalysts were designed, successfully synthesized, and fully characterized and applied for these protocols. During these studies, intermediates resulting from the oxidation of tertiary amines are trapped during the photoinduced electron transfer (PET) process. The reaction was carried out efficiently with a variety of substrates to give the corresponding products at relatively short times in good to excellent yields in parallel with the use of the visible light irradiation as a renewable energy source. Most of these processes are novel or are superior in terms of cost-effectiveness, safety, and simplicity to published reports.
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Affiliation(s)
- Somayeh Firoozi
- Department of Chemistry, Shiraz University, Shiraz 7194684795, Islamic Republic of Iran
| | - Mona Hosseini-Sarvari
- Department of Chemistry, Shiraz University, Shiraz 7194684795, Islamic Republic of Iran
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28
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Qiu X, Zhang Y, Zhu Y, Long C, Su L, Liu S, Tang Z. Applications of Nanomaterials in Asymmetric Photocatalysis: Recent Progress, Challenges, and Opportunities. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2021; 33:e2001731. [PMID: 32672886 DOI: 10.1002/adma.202001731] [Citation(s) in RCA: 54] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/11/2020] [Revised: 04/27/2020] [Indexed: 06/11/2023]
Abstract
Asymmetric catalysis is one of the most attractive strategies to obtain important enantiomerically pure chemicals with high quality and production. In addition, thanks to the abundant and sustainable advantages of solar energy, photocatalysis possesses great potential in environmentally benign reactions. Undoubtedly, asymmetric photocatalysis meets the strict demand of modern chemistry: environmentally friendly and energy-sustainable alternatives. Compared with homogeneous asymmetric photocatalysis, heterogeneous catalysis has features of easy separation, recovery, and reuse merits, thus being cost- and time-effective. Herein, the state-of-the-art progress in asymmetric photocatalysis by heterogeneous nanomaterials is addressed. The discussion comprises two sections based on the type of nanomaterials: typical inorganic semiconductors like TiO2 and quantum dots and emerging porous materials including metal-organic frameworks, porous organic polymers, and organic cages. Finally, the challenges and future developments of heterogeneous asymmetric photocatalysis are proposed.
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Affiliation(s)
- Xueying Qiu
- School of Materials Science and Engineering, Harbin Institute of Technology, Harbin, 150080, China
- MOE Key Laboratory of Micro-systems and Micro-structures Manufacturing, Harbin Institute of Technology, Harbin, 150080, China
- CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing, 100190, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Yin Zhang
- CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing, 100190, China
| | - Yanfei Zhu
- CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing, 100190, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Chang Long
- School of Materials Science and Engineering, Harbin Institute of Technology, Harbin, 150080, China
- MOE Key Laboratory of Micro-systems and Micro-structures Manufacturing, Harbin Institute of Technology, Harbin, 150080, China
- CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing, 100190, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Lina Su
- CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing, 100190, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Shaoqin Liu
- School of Materials Science and Engineering, Harbin Institute of Technology, Harbin, 150080, China
- MOE Key Laboratory of Micro-systems and Micro-structures Manufacturing, Harbin Institute of Technology, Harbin, 150080, China
| | - Zhiyong Tang
- CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing, 100190, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
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29
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Feng X, Pi Y, Song Y, Xu Z, Li Z, Lin W. Integration of Earth-Abundant Photosensitizers and Catalysts in Metal–Organic Frameworks Enhances Photocatalytic Aerobic Oxidation. ACS Catal 2021. [DOI: 10.1021/acscatal.0c05053] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Xuanyu Feng
- Department of Chemistry, The University of Chicago, 929 East 57th Street, Chicago, Illinois 60637, United States
| | - Yunhong Pi
- Department of Chemistry, The University of Chicago, 929 East 57th Street, Chicago, Illinois 60637, United States
- School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China
| | - Yang Song
- Department of Chemistry, The University of Chicago, 929 East 57th Street, Chicago, Illinois 60637, United States
| | - Ziwan Xu
- Department of Chemistry, The University of Chicago, 929 East 57th Street, Chicago, Illinois 60637, United States
| | - Zhong Li
- School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China
| | - Wenbin Lin
- Department of Chemistry, The University of Chicago, 929 East 57th Street, Chicago, Illinois 60637, United States
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30
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Koohgard M, Karimitabar H, Hosseini-Sarvari M. Visible-light-mediated semi-heterogeneous black TiO 2/nickel dual catalytic C (sp 2)-P bond formation toward aryl phosphonates. Dalton Trans 2020; 49:17147-17151. [PMID: 33232413 DOI: 10.1039/d0dt03507f] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
The combination of black TiO2 nanoparticles (NPs) with a nickel catalyst provides a low-cost, sustainable, and reusable alternative dual catalytic system to a homogeneous counterpart (noble metals). This black TiO2-photoredox/nickel dual catalytic system has efficiently driven C-P bond formation between aryl iodides and diarylphosphine oxides under visible light, providing good to excellent yields as well as tolerating a variety of functional groups. The practical application of this semi-heterogeneous protocol has been highlighted by a sunlight experiment, a gram-scale reaction, and a reusability test.
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Affiliation(s)
- Mehdi Koohgard
- Shiraz University, Shiraz 7194684795, Islamic Republic of Iran.
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31
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Lin Y, Guo J, San Martin J, Han C, Martinez R, Yan Y. Photoredox Organic Synthesis Employing Heterogeneous Photocatalysts with Emphasis on Halide Perovskite. Chemistry 2020; 26:13118-13136. [PMID: 32533611 DOI: 10.1002/chem.202002145] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2020] [Indexed: 12/22/2022]
Abstract
Lately, heterogeneous semiconductor materials have been explored as an emerging type of efficient photocatalyst for photoredox organic synthesis. Among these semiconductors, lead halide perovskite materials demonstrate unique properties towards excellent charge separation and charge transfer, extremely long charge carrier migration, high efficiency in visible light absorption, and long excited states lifetimes, etc., as proved in ground-breaking solar cell applications, garnering necessary merits for an efficient catalytic system for photoredox organic reactions. Here, the latest progress in heterogeneous semiconductor materials towards this endeavor is examined, with particular emphasis on lead halide perovskite nanocrystals (NCs) in photocatalytic organic synthesis.
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Affiliation(s)
- Yixiong Lin
- Department of Chemistry and Biochemistry, San Diego State University, San Diego, California, 92182, USA
| | - Jun Guo
- Department of Chemistry and Biochemistry, San Diego State University, San Diego, California, 92182, USA
| | - Jovan San Martin
- Department of Chemistry and Biochemistry, San Diego State University, San Diego, California, 92182, USA
| | - Chuang Han
- Department of Chemistry and Biochemistry, San Diego State University, San Diego, California, 92182, USA
| | - Ramon Martinez
- Department of Chemistry and Biochemistry, San Diego State University, San Diego, California, 92182, USA
| | - Yong Yan
- Department of Chemistry and Biochemistry, San Diego State University, San Diego, California, 92182, USA
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32
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Murugesh V, Singh SP. Lead-halides Perovskite Visible Light Photoredox Catalysts for Organic Synthesis. CHEM REC 2020; 20:1181-1197. [PMID: 32865302 DOI: 10.1002/tcr.202000049] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2020] [Revised: 07/30/2020] [Accepted: 07/31/2020] [Indexed: 11/10/2022]
Abstract
Lead-halide perovskites has grabbed great attention in recent years due to its unique photophysical and electrical properties. It has open new window in organic solar cell application for commercial point. Research has extended its application further towards visible light photoredox catalysts for organic synthesis. Due to intrinsic redox properties, sharp absorption and emissions patterns makes lead-halide perovskites as promising photoredox catalyst. In the presence of light, perovskite absorbs light, generates electrons/holes, which can reduce or oxidize species at reactive centres of organic molecule, leads to organic transformation. Lead-halide perovskites are used as heterogeneous catalysts for small molecules activations like CO, CH4 and NO, also suitable photocatalysts for organic bond formations, oxidations, reductions, polymerizations and dimerization transformations. Recent literatures have set another milestone for perovskite materials in organic synthesis. This review provides information on lead-halides perovskite in visible-light photoredox catalysis such as C-C, C-X (X-halo, hetero atom) bond formations C-H arylation.
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Affiliation(s)
- V Murugesh
- Polymers and Functional Materials Department, CSIR-Indian Institute of Chemical Technology, Hyderabad, India
| | - Surya Prakash Singh
- Polymers and Functional Materials Department, CSIR-Indian Institute of Chemical Technology, Hyderabad, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201 002, India
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33
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Han C, Zhu X, Martin JS, Lin Y, Spears S, Yan Y. Recent Progress in Engineering Metal Halide Perovskites for Efficient Visible-Light-Driven Photocatalysis. CHEMSUSCHEM 2020; 13:4005-4025. [PMID: 32424894 DOI: 10.1002/cssc.202000953] [Citation(s) in RCA: 41] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/12/2020] [Revised: 05/17/2020] [Indexed: 06/11/2023]
Abstract
Artificial photosynthesis has attracted increasing attention due to recent environmental and energy concerns. Metal halide perovskites (MHPs) demonstrating excellent optoelectronic properties have currently emerged as novel and efficient photocatalytic materials. Herein, the structural features of MHPs that are responsible for the photoinduced charge separation and charge migration properties are briefly introduced, and then important and necessary photophysical and photochemical aspects of MHPs related to photoredox catalysis are summarized. Subsequently, the applications of MHPs for solar energy harvesting and photocatalytic conversion, including H2 evolution, CO2 reduction, degradation of organic pollutants, and photoredox organic synthesis, are extensively demonstrated, with a focus on strategies for improving the performance (e.g., selectivity, activity, stability, recyclability, and environmental compatibility) of these MHP-based photocatalytic systems. To conclude, existing challenges and prospects on the future development of MHP-based materials towards photoredox catalysis applications are detailed.
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Affiliation(s)
- Chuang Han
- Department of Chemistry and Biochemistry, San Diego State University, San Diego, CA, 92182, USA
| | - Xiaolin Zhu
- Department of Chemistry and Biochemistry, San Diego State University, San Diego, CA, 92182, USA
- School of Chemistry and Chemical Engineering, Shaanxi Normal University (SNNU), Xi'an, 710062, PR China
| | - Jovan San Martin
- Department of Chemistry and Biochemistry, San Diego State University, San Diego, CA, 92182, USA
| | - Yixiong Lin
- Department of Chemistry and Biochemistry, San Diego State University, San Diego, CA, 92182, USA
| | - Sydney Spears
- Department of Chemistry and Biochemistry, San Diego State University, San Diego, CA, 92182, USA
| | - Yong Yan
- Department of Chemistry and Biochemistry, San Diego State University, San Diego, CA, 92182, USA
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34
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Li C, Ma Y, Liu H, Tao L, Ren Y, Chen X, Li H, Yang Q. Asymmetric photocatalysis over robust covalent organic frameworks with tetrahydroquinoline linkage. CHINESE JOURNAL OF CATALYSIS 2020. [DOI: 10.1016/s1872-2067(20)63572-0] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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35
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Saha D. Catalytic Enantioselective Radical Transformations Enabled by Visible Light. Chem Asian J 2020; 15:2129-2152. [PMID: 32463981 DOI: 10.1002/asia.202000525] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2020] [Revised: 05/27/2020] [Indexed: 12/11/2022]
Abstract
Visible light has been recognized as an economical and environmentally benign source of energy that enables chemoselective molecular activation of chemical reactions and hence reveal a new horizon for the design and discovery of novel chemical transformations. On the other hand, asymmetric catalysis represents an economic method to satisfy the increasing need for enantioenriched compounds in the chemical and pharmaceutical industries. Therefore, combining visible light photocatalysis with asymmetric catalysis creates a wider range of opportunities for the development of mechanistically unique reaction schemes. However, there arise two main problems like undesirable photochemical background reactions and difficulties in controlling the stereochemistry with highly reactive photochemical intermediates which can pose a serious challenge to the development of asymmetric visible light photocatalysis. In recent years, several methods have been developed to overcome these challenges. This review summarizes the recent advances in visible light-induced enantioselective reactions. We divide our discussion into four categories: Asymmetric photoredox organocatalysis, asymmetric transition metal photoredox catalysis, asymmetric photoredox Lewis acid catalysis and asymmetric photoinduced energy transfer catalysis. Special emphasis has been given to different catalytic activation modes that enable the construction of challenging carbon-carbon and carbon-heteroatom bond in an enantioselective fashion. A brief analysis of substrate scope and limitation as well as reaction mechanism of these reactions has been included.
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Affiliation(s)
- Debajyoti Saha
- Department of Chemistry, Krishnagar Govt. College, Krishnagar, Nadia, 741101, India
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36
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Hong BC. Enantioselective synthesis enabled by visible light photocatalysis. Org Biomol Chem 2020; 18:4298-4353. [PMID: 32458948 DOI: 10.1039/d0ob00759e] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/28/2024]
Abstract
Enantioselective photoreaction has been a synthetic challenge for decades. With the continuous development of modern visible light photocatalysis and asymmetric catalysis, remarkable advances have been achieved through the synergistic action of these catalytic reactions, allowing the construction of various enantiomerically enriched molecules that were once inaccessible using photocatalytic reactions. This review presents some of the contemporary developments in enantioselective visible-light photocatalysis reactions, covering the period from 2008 to March 2020, with the contents classified by catalysis type.
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Affiliation(s)
- Bor-Cherng Hong
- Department of Chemistry and Biochemistry, National Chung Cheng University, Chia-Yi, 621, Taiwan, Republic of China.
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37
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Ma D, Li J, Liu A, Chen C. Carbon Gels-Modified TiO 2: Promising Materials for Photocatalysis Applications. MATERIALS 2020; 13:ma13071734. [PMID: 32276332 PMCID: PMC7178632 DOI: 10.3390/ma13071734] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/25/2020] [Revised: 04/02/2020] [Accepted: 04/02/2020] [Indexed: 11/20/2022]
Abstract
Carbon gels are a kind of porous organic polymer, which play pivotal roles in electrode, supercapacitor, hydrogen storage, and catalysis. Carbon gels are commonly prepared by the condensation of resorcinol and formaldehyde. The as-prepared polymers are further aged and sintered at a high temperature in an inert atmosphere to form cross-linked and intertwined porous structures. Owing to its large specific area and narrow pore size distribution, this kind of material is very appropriate for mass transfer, substrate absorption, and product desorption from the pores. In recent years, carbon gels have been discovered to function as effective hybrid materials with TiO2 for photocatalytic applications. They could act as efficient deep-traps for photo-induced holes, which decreases the recombination probability of photo-induced carriers and lengthens their lifetime. In this mini-review, we will discuss the state-of-the-art paragon examples of carbon gels/TiO2 composite materials applied in photo(electro)catalysis. The major challenges and gaps of its application in this field will also be emphasized.
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Affiliation(s)
- Dongge Ma
- School of Science, Beijing Technology and Business University, Beijing 100048, China;
- Correspondence: ; Tel.: +86-010-68985573
| | - Jundan Li
- School of Science, Beijing Technology and Business University, Beijing 100048, China;
| | - Anan Liu
- Basic Experimental Center for Natural Science, University of Science and Technology Beijing, Beijing 100083, China;
| | - Chuncheng Chen
- Key Laboratory of Photochemistry, Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China;
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38
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Affiliation(s)
- Sebastian Gisbertz
- Department of Biomolecular SystemsMax Planck Institute of Colloids and Interfaces Am Mühlenberg 1 14476 Potsdam Germany
- Department of Chemistry and BiochemistryFreie Universität Berlin Arnimallee 22 14195 Berlin Germany
| | - Bartholomäus Pieber
- Department of Biomolecular SystemsMax Planck Institute of Colloids and Interfaces Am Mühlenberg 1 14476 Potsdam Germany
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39
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Kang X, Wu X, Han X, Yuan C, Liu Y, Cui Y. Rational synthesis of interpenetrated 3D covalent organic frameworks for asymmetric photocatalysis. Chem Sci 2019; 11:1494-1502. [PMID: 34084378 PMCID: PMC8148036 DOI: 10.1039/c9sc04882k] [Citation(s) in RCA: 71] [Impact Index Per Article: 14.2] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2019] [Accepted: 12/17/2019] [Indexed: 12/12/2022] Open
Abstract
Covalent organic frameworks (COFs) show great promise as heterogeneous photocatalysts, but they have not yet been explored for asymmetric photocatalysis, which is important for the sustainable production of pharmaceuticals and fine chemicals. We report here a pair of twofold interpenetrated 3D COFs adopting a rare (3,4)-connected ffc topology for photocatalytic asymmetric reactions by imine condensation of rectangular and trigonal building blocks. Both COFs containing a photoredox triphenylamine moiety are efficient photocatalysts for the cross-dehydrogenative coupling reactions and asymmetric α-alkylation of aldehydes integrated with a chiral imidazolidinone catalyst. Under visible-light irradiation, the targeted chiral products are produced in satisfactory yields with up to 94% enantiomeric excess, which are comparable to those of reported reactions using molecular metal complexes or organic dyes as photosensitizers. Whereas the COFs became amorphous after catalysis, they can be recrystallized through solvent-assisted linker exchange and reused without performance loss. This is the first report utilizing COFs as photocatalysts to promote enantioselective photochemical reactions.
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Affiliation(s)
- Xing Kang
- School of Chemistry and Chemical Engineering, State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University Shanghai 200240 China
| | - Xiaowei Wu
- School of Chemistry and Chemical Engineering, State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University Shanghai 200240 China
| | - Xing Han
- School of Chemistry and Chemical Engineering, State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University Shanghai 200240 China
| | - Chen Yuan
- School of Chemistry and Chemical Engineering, State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University Shanghai 200240 China
| | - Yan Liu
- School of Chemistry and Chemical Engineering, State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University Shanghai 200240 China
| | - Yong Cui
- School of Chemistry and Chemical Engineering, State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University Shanghai 200240 China
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40
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Teplý F. Visible-light photoredox catalysis with [Ru(bpy)3]2+: General principles and the twentieth-century roots. PHYSICAL SCIENCES REVIEWS 2019. [DOI: 10.1515/psr-2017-0171] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
AbstractDevelopments in the field of visible-light photoredox catalysis have considerably enriched toolbox of preparative organic chemists in recent years. This fast-growing area of research has emerged after seminal studies mainly by MacMillan, Yoon, and Stephenson groups were published in 2008 and 2009. This chapter focuses on the twentieth-century roots of photoredox catalysis with [Ru(bpy)3]2+, and the key properties of this species are briefly summarized.
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Affiliation(s)
- Filip Teplý
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences, Flemingovo nám 2, 166 10 Prague 6, Praha, Czech Republic
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Abstract
AbstractWithin the last decade the combination of photoredox catalysis and other catalytic modes of activation has become a powerful tool for organic synthesis to enable transformations that are not possible using single catalyst systems and hence are complementary to traditional methodology. Especially reactions proceeding via synergistic catalysis where co-catalyst and photocatalyst simultaneously and separately activate different reaction partners greatly benefit from the special properties of molecules and transition metal complexes in their excited state being oxidizing and reducing in nature at the same time. Apart from allowing for the generation of radical (open-shell) reactive intermediates by SET under mild conditions from bench-stable, abundant precursors, the photocatalyst often acts to interweave the distinct catalytic cycles by interaction at multiple points of the reaction mechanism to provide overall redox-neutral processes by shuttling electrons within in this complex network of elementary reaction steps. Synergistic strategies moreover may allow to performing such reactions with enantioselectivity, while mostly the selectivity is achieved by the chiral co-catalyst. The merger of photocatalysis has been achieved with a broad range of alternative modes of catalysis including organocatalysis, Brønstedt and Lewis acid and base catalysis, enzyme catalysis as well as in the context of cross-coupling transition metal catalysis overcoming challenging steps in this methodology and therefore has contributed to considerably expand the repertoire of suitable coupling partners. While only selected examples will be discussed, this chapter will highlight various dual catalytic platforms focusing on the photocatalytically generated intermediates, but also illustrating the diverse roles of photocatalysts in the context of such synergistic multicatalysis reactions.
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Affiliation(s)
- Kirsten Zeitler
- Fakultät für Chemie und Mineralogie, Institut für Organische Chemie, Universität Leipzig, Johannisallee 29, D-04107, Leipzig04103, Germany
| | - Matthias Neumann
- Fakultät für Chemie und Pharmazie, Institut für Organische Chemie, Universität Regensburg, Regensburg, Bayern, Germany
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42
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Luo N, Hou T, Liu S, Zeng B, Lu J, Zhang J, Li H, Wang F. Photocatalytic Coproduction of Deoxybenzoin and H2 through Tandem Redox Reactions. ACS Catal 2019. [DOI: 10.1021/acscatal.9b03651] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Nengchao Luo
- State Key Laboratory of Catalysis, Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, P. R. China
- University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Tingting Hou
- School of Materials Science and Engineering, Central South University, Changsha 410083, P. R. China
| | - Shiyang Liu
- State Key Laboratory of Catalysis, Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, P. R. China
- University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Bin Zeng
- State Key Laboratory of Catalysis, Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, P. R. China
- University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Jianmin Lu
- State Key Laboratory of Catalysis, Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, P. R. China
| | - Jian Zhang
- State Key Laboratory of Catalysis, Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, P. R. China
| | - Hongji Li
- State Key Laboratory of Catalysis, Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, P. R. China
- University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Feng Wang
- State Key Laboratory of Catalysis, Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, P. R. China
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43
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Miyabe H, Kohtani S. Photocatalytic single electron transfer reactions on TiO2 semiconductor. Sci China Chem 2019. [DOI: 10.1007/s11426-019-9626-9] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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44
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Gualandi A, Marchini M, Mengozzi L, Kidanu HT, Franc A, Ceroni P, Cozzi PG. Aluminum(III) Salen Complexes as Active Photoredox Catalysts. European J Org Chem 2019. [DOI: 10.1002/ejoc.201901086] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Andrea Gualandi
- Dipartimento di Chimica “G. Ciamician”; Alma Mater Studiorum - Università di Bologna; Via Selmi 2 40126 Bologna Italy
| | - Marianna Marchini
- Dipartimento di Chimica “G. Ciamician”; Alma Mater Studiorum - Università di Bologna; Via Selmi 2 40126 Bologna Italy
| | - Luca Mengozzi
- Dipartimento di Chimica “G. Ciamician”; Alma Mater Studiorum - Università di Bologna; Via Selmi 2 40126 Bologna Italy
| | - Hagos Tesfay Kidanu
- Dipartimento di Chimica “G. Ciamician”; Alma Mater Studiorum - Università di Bologna; Via Selmi 2 40126 Bologna Italy
| | - Antoine Franc
- Dipartimento di Chimica “G. Ciamician”; Alma Mater Studiorum - Università di Bologna; Via Selmi 2 40126 Bologna Italy
- École nationale supérieure de chimie de Paris; 11, rue Pierre et Marie Curie 75231 Paris Cedex 05 France
| | - Paola Ceroni
- Dipartimento di Chimica “G. Ciamician”; Alma Mater Studiorum - Università di Bologna; Via Selmi 2 40126 Bologna Italy
| | - Pier Giorgio Cozzi
- Dipartimento di Chimica “G. Ciamician”; Alma Mater Studiorum - Università di Bologna; Via Selmi 2 40126 Bologna Italy
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45
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Kohtani S, Kawashima A, Miyabe H. Stereoselective Organic Reactions in Heterogeneous Semiconductor Photocatalysis. Front Chem 2019; 7:630. [PMID: 31620425 PMCID: PMC6759509 DOI: 10.3389/fchem.2019.00630] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2019] [Accepted: 09/02/2019] [Indexed: 01/09/2023] Open
Abstract
The most significant feature of heterogeneous semiconductor photocatalysis is that both oxidation and reduction occur in a one-pot process. Thus, photocatalysis leads to unique redox organic reactions that cannot be achieved by conventional techniques using oxidants or reductants. Semiconductor photocatalysis is expected to be a new method for fine chemical syntheses of highly valuable molecules such as chiral medicines. However, the use of semiconductor photocatalysts in stereoselective reactions has been limited so far. This mini-review highlights recent progress in stereoselective organic reactions using semiconductor photocatalysts, briefly summarizing the enantio- and diastereoselective reactions based on the currently available literature.
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Affiliation(s)
- Shigeru Kohtani
- School of Pharmacy, Hyogo University of Health Sciences, Kobe, Japan
| | - Akira Kawashima
- School of Pharmacy, Hyogo University of Health Sciences, Kobe, Japan
| | - Hideto Miyabe
- School of Pharmacy, Hyogo University of Health Sciences, Kobe, Japan
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Novel CNT/PbBiO2Br hybrid materials with enhanced broad spectrum photocatalytic activity toward ciprofloxacin (CIP) degradation. J Photochem Photobiol A Chem 2019. [DOI: 10.1016/j.jphotochem.2019.111901] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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47
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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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48
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Lead halide perovskites for photocatalytic organic synthesis. Nat Commun 2019; 10:2843. [PMID: 31253792 PMCID: PMC6599021 DOI: 10.1038/s41467-019-10634-x] [Citation(s) in RCA: 153] [Impact Index Per Article: 30.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2019] [Accepted: 05/16/2019] [Indexed: 11/24/2022] Open
Abstract
Nature is capable of storing solar energy in chemical bonds via photosynthesis through a series of C–C, C–O and C–N bond-forming reactions starting from CO2 and light. Direct capture of solar energy for organic synthesis is a promising approach. Lead (Pb)-halide perovskite solar cells reach 24.2% power conversion efficiency, rendering perovskite a unique type material for solar energy capture. We argue that photophysical properties of perovskites already proved for photovoltaics, also should be of interest in photoredox organic synthesis. Because the key aspects of these two applications are both relying on charge separation and transfer. Here we demonstrated that perovskites nanocrystals are exceptional candidates as photocatalysts for fundamental organic reactions, for example C–C, C–N and C–O bond-formations. Stability of CsPbBr3 in organic solvents and ease-of-tuning their bandedges garner perovskite a wider scope of organic substrate activations. Our low-cost, easy-to-process, highly-efficient, air-tolerant and bandedge-tunable perovskites may bring new breakthrough in organic chemistry. While photoredox catalysis provides organic chemistry new avenues for chemical reactions, typical photocatalysts require expensive noble metals and show modest stabilities. Here, authors examine lead halide perovskites nanocrystals as stable and tunable photoredox catalysts for organic synthesis.
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49
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Vidyacharan S, Ramanjaneyulu BT, Jang S, Kim DP. Continuous-Flow Visible Light Organophotocatalysis for Direct Arylation of 2H-Indazoles: Fast Access to Drug Molecules. CHEMSUSCHEM 2019; 12:2581-2586. [PMID: 30985985 DOI: 10.1002/cssc.201900736] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/14/2019] [Revised: 04/09/2019] [Indexed: 06/09/2023]
Abstract
A continuous-flow homogeneous photocatalytic method has been devised for the direct arylation of 2H-indazoles. This visible-light-promoted approach directly accesses a wide range of structurally diverse C3-arylated scaffolds of biological interest in a fast (1 min), single-step reaction by using eosin Y as an organophotocatalyst. Furthermore, a microreactor technology is also employed for the fast synthesis of liver X receptor inhibitor drugs with very good yields under metal-free conditions, whereas the reported methods required multiple steps and much longer reaction times (18-24 h).
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Affiliation(s)
- Shinde Vidyacharan
- Center of Intelligent Microprocess of Pharmaceutical Synthesis, Department of Chemical Engineering, Pohang University of Science and Technology (POSTECH), 37673, Pohang, Korea
| | - Bandaru T Ramanjaneyulu
- Center of Intelligent Microprocess of Pharmaceutical Synthesis, Department of Chemical Engineering, Pohang University of Science and Technology (POSTECH), 37673, Pohang, Korea
| | - Seungwook Jang
- Center of Intelligent Microprocess of Pharmaceutical Synthesis, Department of Chemical Engineering, Pohang University of Science and Technology (POSTECH), 37673, Pohang, Korea
| | - Dong-Pyo Kim
- Center of Intelligent Microprocess of Pharmaceutical Synthesis, Department of Chemical Engineering, Pohang University of Science and Technology (POSTECH), 37673, Pohang, Korea
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50
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Zhang Q, Chang X, Peng L, Guo C. Asymmetric Lewis Acid Catalyzed Electrochemical Alkylation. Angew Chem Int Ed Engl 2019; 58:6999-7003. [DOI: 10.1002/anie.201901801] [Citation(s) in RCA: 51] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2019] [Revised: 03/20/2019] [Indexed: 11/07/2022]
Affiliation(s)
- Qinglin Zhang
- Hefei National Laboratory for Physical Sciences at the MicroscaleUniversity of Science and Technology of China Hefei 230026 China
| | - Xihao Chang
- Hefei National Laboratory for Physical Sciences at the MicroscaleUniversity of Science and Technology of China Hefei 230026 China
| | - Lingzi Peng
- Hefei National Laboratory for Physical Sciences at the MicroscaleUniversity of Science and Technology of China Hefei 230026 China
| | - Chang Guo
- Hefei National Laboratory for Physical Sciences at the MicroscaleUniversity of Science and Technology of China Hefei 230026 China
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