1
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Gim J, Rubio PYM, Mohandoss S, Lee YR. Lewis Acid-Catalyzed Benzannulation of Vinyloxiranes with 3-Formylchromones or 1,4-Quinones for Diversely Functionalized 2-Hydroxybenzophenones, 1,4-Naphthoquinones, and Anthraquinones. J Org Chem 2024; 89:2538-2549. [PMID: 38302117 DOI: 10.1021/acs.joc.3c02554] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2024]
Abstract
A facile and convenient protocol for the regioselective construction of functionalized 2-hydroxybenzophenones is described. This protocol involves the Sc(OTf)3/BF3·OEt2-catalyzed benzannulation of 2-vinyloxirans with 3-formylchromone, which involves cascade in situ diene formation, [4 + 2] cycloaddition, elimination, and ring-opening strategies. Moreover, it provides an expedited synthetic pathway to access biologically intriguing 1,4-naphthoquinones and anthraquinones including vitamin K3 and tectoquinone. The synthesized compounds also hold potential for use as UV filters and show promise as chemosensors for Cu2+ and Mg2+ ions.
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Affiliation(s)
- Jihwan Gim
- School of Chemical Engineering, Yeungnam University, Gyeongsan, 38541, Republic of Korea
| | - Peter Yuosef M Rubio
- School of Chemical Engineering, Yeungnam University, Gyeongsan, 38541, Republic of Korea
| | - Sonaimuthu Mohandoss
- School of Chemical Engineering, Yeungnam University, Gyeongsan, 38541, Republic of Korea
| | - Yong Rok Lee
- School of Chemical Engineering, Yeungnam University, Gyeongsan, 38541, Republic of Korea
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2
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Swaby C, Taylor A, Greaney MF. An NHC-Catalyzed Desulfonylative Smiles Rearrangement of Pyrrole and Indole Carboxaldehydes. J Org Chem 2023; 88:12821-12825. [PMID: 37589318 PMCID: PMC10476196 DOI: 10.1021/acs.joc.3c01089] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2023] [Indexed: 08/18/2023]
Abstract
The use of catalysis methods to enable Smiles rearrangement opens up new substrate classes for arylation under mild conditions. Here, we describe an N-heterocyclic carbene (NHC) catalysis system that accesses indole and pyrrole aldehyde substrates in a desulfonylative Smiles process. The reaction proceeds under mild, transition-metal-free conditions and captures acyl anion reactivity for the synthesis of a diverse array of 2-aroyl indoles and pyrroles from readily available sulfonamide starting materials.
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Affiliation(s)
| | | | - Michael F. Greaney
- Dept. of Chemistry, University of Manchester, Oxford Rd, Manchester, M13 9PL, U.K.
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3
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Halder P, Talukdar V, Iqubal A, Das P. Palladium-Catalyzed Aminocarbonylation of Isoquinolines Utilizing Chloroform-COware Chemistry. J Org Chem 2022; 87:13965-13979. [PMID: 36217780 DOI: 10.1021/acs.joc.2c01629] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
The carbonyl group forms an integral part of several drug molecules and materials; hence, synthesis of carbonylated compounds remains an intriguing area of research for synthetic and medicinal chemists. Handling toxic CO gas has several limitations; thus, using safe and effective techniques for in or ex situ generation of carbon monoxide from nontoxic and cheap precursors is highly desirable. Among several precursors that have been explored for the generation of CO gas, chloroform can prove to be a promising CO surrogate due to its cost-effectiveness and ready availability. However, the one-pot chloroform-based carbonylation reaction requires strong basic conditions for hydrolysis of chloroform that may affect functional group tolerability of substrates and scale-up reactions. These limitations can be overcome by a two-chamber reactor (COware) that can be utilized for ex situ CO generation through hydrolysis of chloroform in one chamber and facilitating safe carbonylation reactions in another chamber under mild conditions. The versatility of this "Chloroform-COware" technique is explored through palladium-catalyzed aminocarbonylation of medicinally relevant heterocyclic cores, viz., isoquinoline and quinoline.
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Affiliation(s)
- Pallabi Halder
- Department of Chemistry and Chemical Biology, Indian Institute of Technology (Indian School of Mines), Dhanbad-826004, India
| | - Vishal Talukdar
- Department of Chemistry and Chemical Biology, Indian Institute of Technology (Indian School of Mines), Dhanbad-826004, India
| | - Ashif Iqubal
- Department of Chemistry and Chemical Biology, Indian Institute of Technology (Indian School of Mines), Dhanbad-826004, India
| | - Parthasarathi Das
- Department of Chemistry and Chemical Biology, Indian Institute of Technology (Indian School of Mines), Dhanbad-826004, India
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4
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Ogawa S, Tobisu M. Nickel-catalyzed 1,4-aryl rearrangement of aryl N-benzylimidates via C-O and C-H bond cleavage. Chem Commun (Camb) 2022; 58:7909-7911. [PMID: 35735189 DOI: 10.1039/d2cc02355e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We report herein that nickel-catalyzed reaction of aryl imidates bearing an N-benzyl group results in 1,4-migration of an O-aryl group via the cleavage of C-O and C-H bonds. This protocol allows for the benzylic C-H bond arylation of benzylamine building blocks using phenols as an aryl source to form elaborate diarylmethylamine derivatives.
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Affiliation(s)
- Satoshi Ogawa
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Suita, Osaka 565-0871, Japan.
| | - Mamoru Tobisu
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Suita, Osaka 565-0871, Japan. .,Innovative Catalysis Science Division, Institute for Open and Transdisciplinary Research Initiatives (ICS-OTRI), Osaka University, Suita, Osaka 565-0871, Japan
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5
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Greaney MF, Whalley DM. Recent Advances in the Smiles Rearrangement: New Opportunities for Arylation. SYNTHESIS-STUTTGART 2022. [DOI: 10.1055/a-1710-6289] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
AbstractThe Smiles rearrangement has undergone a renaissance in recent years providing new avenues for non-canonical arylation techniques in both the radical and polar regimes. This short review will discuss recent applications of the reaction (from 2017 to late 2021), including its relevance to areas such as heterocycle synthesis and the functionalization of alkenes and alkynes as well as glimpses at new directions for the field.1 Introduction2 Polar Smiles Rearrangements3 Radical Smiles: Alkene and Alkyne Functionalization4 Radical Smiles: Rearrangements via C–X Bond Cleavage5 Radical Smiles: Miscellaneous Rearrangements6 Conclusions
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6
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Abstract
Radical aryl migrations are powerful techniques to forge new bonds in aromatic compounds. The growing popularity of photoredox catalysis has led to an influx of novel strategies to initiate and control aryl migration starting from widely available radical precursors. This review encapsulates progress in radical aryl migration enabled by photochemical methods─particularly photoredox catalysis─since 2015. Special attention is paid to descriptions of scope, mechanism, and synthetic applications of each method.
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Affiliation(s)
- Anthony R. Allen
- Department of Chemistry, Willard Henry Dow Laboratory, University of Michigan, 930 North University Avenue, Ann Arbor, Michigan 48109, United States
| | - Efrey A. Noten
- Department of Chemistry, Willard Henry Dow Laboratory, University of Michigan, 930 North University Avenue, Ann Arbor, Michigan 48109, United States
| | - Corey R. J. Stephenson
- Department of Chemistry, Willard Henry Dow Laboratory, University of Michigan, 930 North University Avenue, Ann Arbor, Michigan 48109, United States
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7
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Chiyindiko E, Langner EH, Conradie J. Electrochemical behaviour of 2-hydroxybenzophenones and related molecules. RESULTS IN CHEMISTRY 2022. [DOI: 10.1016/j.rechem.2022.100332] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022] Open
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8
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Ji M, Chang C, Wu X, Zhu C. Photocatalytic intermolecular carboarylation of alkenes by selective C-O bond cleavage of diarylethers. Chem Commun (Camb) 2021; 57:9240-9243. [PMID: 34519298 DOI: 10.1039/d1cc04038c] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Disclosed herein is a novel radical-mediated intermolecular carboarylation of alkenes by cleaving inert C-O bonds. The strategically designed arylbenzothiazolylether diazonium salts are harnessed as dual-function reagents. A vast array of alkenes are proven to be suitable substrates. The benzothiazolyl moiety in the products serves as the formyl precursor, and the OH residue provides the cross-coupling site for further product elaboration, indicating the robust transformability of the products.
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Affiliation(s)
- Meishan Ji
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, 199 Ren-Ai Road, Suzhou, Jiangsu 215123, China.
| | - Chenyang Chang
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, 199 Ren-Ai Road, Suzhou, Jiangsu 215123, China.
| | - Xinxin Wu
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, 199 Ren-Ai Road, Suzhou, Jiangsu 215123, China.
| | - Chen Zhu
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, 199 Ren-Ai Road, Suzhou, Jiangsu 215123, China. .,Key Laboratory of Synthetic Chemistry of Natural Substances, Shanghai Institute of Organic Chemistry, Chinese Academy of Science, 345 Lingling Road, Shanghai 200032, China
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9
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Huang H, Zou X, Cao S, Peng Z, Peng Y, Wang X. N-Heterocyclic Carbene-Catalyzed Cyclization of Aldehydes with α-Diazo Iodonium Triflate: Facile Access to 2,5-Disubstituted 1,3,4-Oxadiazoles. Org Lett 2021; 23:4185-4190. [PMID: 33989007 DOI: 10.1021/acs.orglett.1c01128] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Herein, we report a novel organocatalytic process for synthesis of complex 1,3,4-oxadiazoles from readily accessible aldehydes. By exploiting the nucleophilicity of the putative Breslow intermediate and the inherent electrophilicity of α-diazo iodonium triflate, we have found that N-heterocyclic carbene catalyst promotes efficient cyclization of various aldehydes and α-diazo iodonium triflates. The reaction proceeds under mild conditions with a wide range of functional group tolerance. The heterocyclic products can be readily further functionalized, rendering the protocol highly valuable.
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Affiliation(s)
- Hang Huang
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Advanced Catalytic Engineering Research Center of the Ministry of Education, Hunan University, Changsha 410082, P. R. China
| | - Xianghua Zou
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Advanced Catalytic Engineering Research Center of the Ministry of Education, Hunan University, Changsha 410082, P. R. China
| | - Si Cao
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Advanced Catalytic Engineering Research Center of the Ministry of Education, Hunan University, Changsha 410082, P. R. China
| | - Zhihong Peng
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Advanced Catalytic Engineering Research Center of the Ministry of Education, Hunan University, Changsha 410082, P. R. China
| | - Yingying Peng
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Advanced Catalytic Engineering Research Center of the Ministry of Education, Hunan University, Changsha 410082, P. R. China
| | - Xi Wang
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Advanced Catalytic Engineering Research Center of the Ministry of Education, Hunan University, Changsha 410082, P. R. China
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10
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Hu Y, Wang Z, Luo H, Jin H, Liu Y, Zhou B. NHC-catalyzed Truce-Smiles rearrangement of N-aryl methacrylamides for the synthesis of trans-cinnamides. Org Biomol Chem 2021; 19:3834-3837. [PMID: 33949593 DOI: 10.1039/d1ob00443c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Herein we describe a NHC-catalyzed Truce-Smiles rearrangement of N-aryl methacrylamides which enables the cleavage of an inert aryl C-N bond. A range of trans-cinnamides could be obtained by the direct construction of a C(aryl)-C(alkenyl) bond and functional groups such as Br, Cl, CN, and pyridinyl are compatible with NHC catalysis. The reaction features high atom-economy, transition-metal free catalysis, and easily available substrates.
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Affiliation(s)
- Yuanyuan Hu
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou, 310014, China.
| | - Zhen Wang
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou, 310014, China.
| | - Honggen Luo
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou, 310014, China.
| | - Hongwei Jin
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou, 310014, China.
| | - Yunkui Liu
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou, 310014, China.
| | - Bingwei Zhou
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou, 310014, China.
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11
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Yasui K, Kamitani M, Fujimoto H, Tobisu M. N-Heterocyclic Carbene-Catalyzed Truce-Smiles Rearrangement of N-Arylacrylamides via the Cleavage of Unactivated C(aryl)-N Bonds. Org Lett 2021; 23:1572-1576. [PMID: 33577343 DOI: 10.1021/acs.orglett.0c04281] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
We report on the N-heterocyclic carbene (NHC)-catalyzed Truce-Smiles rearrangement of aniline derivatives, in which an unactivated C(aryl)-N bond is cleaved, leading to the formation of a new C(aryl)-C bond. The key to the success of this reaction is the utilization of a highly nucleophilic NHC, which enables the formation of a highly nucleophilic ylide intermediate that is generated from an α,β-unsaturated amide.
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Affiliation(s)
- Kosuke Yasui
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Suita, Osaka 565-0871, Japan
| | - Miharu Kamitani
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Suita, Osaka 565-0871, Japan
| | - Hayato Fujimoto
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Suita, Osaka 565-0871, Japan
| | - Mamoru Tobisu
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Suita, Osaka 565-0871, Japan.,Innovative Catalysis Science Division, Institute for Open and Transdisciplinary Research Initiatives (ICS-OTRI), Osaka University, Suita, Osaka 565-0871, Japan
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12
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Parella R, Jakkampudi S, Zhao JC. Recent Applications of Asymmetric Organocatalytic Methods in Total Synthesis. ChemistrySelect 2021. [DOI: 10.1002/slct.202004196] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Ramarao Parella
- Department of Chemistry University of Texas at San Antonio One UTSA Circle San Antonio, Texas 78249-0698 USA
| | - Satish Jakkampudi
- Department of Chemistry University of Texas at San Antonio One UTSA Circle San Antonio, Texas 78249-0698 USA
| | - John C.‐G. Zhao
- Department of Chemistry University of Texas at San Antonio One UTSA Circle San Antonio, Texas 78249-0698 USA
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13
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Fehér PP. Density Functional Theory Evaluation of a Photoinduced Intramolecular Aryl Ether Rearrangement. J Org Chem 2021; 86:2706-2713. [PMID: 33412846 PMCID: PMC7880577 DOI: 10.1021/acs.joc.0c02706] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
![]()
Recently, a new approach of converting
(hetero)aryl ethers to C–C
coupled products via a photoinduced intramolecular rearrangement has
been reported. Although this reaction is photocatalyst-free, it requires
excitation in the ultraviolet (UV) range. To help refine this process,
three different 2-(hetero)aryloxybenzaldehydes are selected from the
available substrate scope in which the general mechanism based on
experimental results is evaluated using density functional theory
calculations. The reaction takes place in the triplet state after
photoexcitation and includes three main steps: the addition of carbonyl
carbon to the ipso carbon of the aryl ether followed
by the C–O cleavage of the resulting spirocyclic intermediates
and then the transfer of the formyl proton to afford 2-hydroxybenzophenone-type
products. This agrees with the experiments, but the calculated pathways
show considerable differences between the three substrates. Above
all, either the first or the second step can be rate-determining but
not the C–H activation. The important factor behind the differences
is the spin-density rearrangement, which is mainly responsible for
the barrier of the ether cleavage. Based on the obtained insights,
the strategy to improve the ∼250 nm excitation has been briefly
discussed, and promising molecules are proposed to improve the scope
of this process.
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Affiliation(s)
- Péter Pál Fehér
- Research Centre for Natural Sciences, Magyar tudósok körútja 2, H-1117 Budapest, Hungary
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14
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Huynh M, De Abreu M, Belmont P, Brachet E. Spotlight on Photoinduced Aryl Migration Reactions. Chemistry 2020; 27:3581-3607. [DOI: 10.1002/chem.202003507] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2020] [Indexed: 12/16/2022]
Affiliation(s)
- Marie Huynh
- UMR CNRS 8038 CiTCoM Université de Paris 4 avenue de l'Observatoire 75006 Paris France
| | - Maxime De Abreu
- UMR CNRS 8038 CiTCoM Université de Paris 4 avenue de l'Observatoire 75006 Paris France
| | - Philippe Belmont
- UMR CNRS 8038 CiTCoM Université de Paris 4 avenue de l'Observatoire 75006 Paris France
| | - Etienne Brachet
- UMR CNRS 8038 CiTCoM Université de Paris 4 avenue de l'Observatoire 75006 Paris France
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15
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Ma R, Ding Y, Chen R, Wang Z, Wang L, Ma Y. Oxidant/Solvent-Controlled I 2-Catalyzed Domino Annulation for Selective Synthesis of 2-Aroylbenzothiazoles and 2-Arylbenzothiazoles under Metal-Free Conditions. J Org Chem 2020; 86:310-321. [PMID: 33332126 DOI: 10.1021/acs.joc.0c02095] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
A simple and practical domino protocol for the selective synthesis of 2-aroylbenzothiazoles and 2-aryl benzothiazoles catalyzed by I2 is developed under metal-free conditions. The reaction outcomes are exclusively controlled by the reaction oxidant/medium. With DMSO employed as both the solvent and the oxidant, an oxidation of aromatic methyl ketones takes precedence over the condensation with 2-aminobenzenethiols. On the other hand, when the reaction was carried out in PhNO2 or in 1,4-dioxane containing PhNO2, the condensation of aromatic methyl ketones with 2-aminobenzenethiols has priority to form imines which is followed by an oxidation of the methyl group from ketones to afford 2-arylbenzothiazoles as a sole product. The PhNO2/I2 co-catalytic system is proposed first time.
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Affiliation(s)
- Renchao Ma
- Institute of Advanced Studies and School of Pharmaceutical and Chemical Engineering, Taizhou University, Taizhou 318000, P R China
| | - Yuxin Ding
- Institute of Advanced Studies and School of Pharmaceutical and Chemical Engineering, Taizhou University, Taizhou 318000, P R China
| | - Rener Chen
- Institute of Advanced Studies and School of Pharmaceutical and Chemical Engineering, Taizhou University, Taizhou 318000, P R China
| | - Zhiming Wang
- Institute of Advanced Studies and School of Pharmaceutical and Chemical Engineering, Taizhou University, Taizhou 318000, P R China
| | - Lei Wang
- Institute of Advanced Studies and School of Pharmaceutical and Chemical Engineering, Taizhou University, Taizhou 318000, P R China
| | - Yongmin Ma
- Institute of Advanced Studies and School of Pharmaceutical and Chemical Engineering, Taizhou University, Taizhou 318000, P R China
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16
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17
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Qiu Z, Li CJ. Transformations of Less-Activated Phenols and Phenol Derivatives via C–O Cleavage. Chem Rev 2020; 120:10454-10515. [DOI: 10.1021/acs.chemrev.0c00088] [Citation(s) in RCA: 83] [Impact Index Per Article: 20.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Zihang Qiu
- Department of Chemistry and FQRNT Centre for Green Chemistry and Catalysis, McGill University, 801 Sherbrooke Street West, Montreal, Quebec H3A 0B8, Canada
| | - Chao-Jun Li
- Department of Chemistry and FQRNT Centre for Green Chemistry and Catalysis, McGill University, 801 Sherbrooke Street West, Montreal, Quebec H3A 0B8, Canada
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18
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Que Y, He H. Advances in N‐Heterocyclic Carbene Catalysis for Natural Product Synthesis. European J Org Chem 2020. [DOI: 10.1002/ejoc.202000305] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Yonglei Que
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes School of Chemistry and Molecular Engineering East China Normal University 3663 North Zhongshan Road 200062 Shanghai China
| | - Haibing He
- Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development East China Normal University 3663 North Zhongshan Road 200062 Shanghai China
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19
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Dou Q, Li CJ, Zeng H. Photoinduced transition-metal- and external-photosensitizer-free intramolecular aryl rearrangement via C(Ar)-O bond cleavage. Chem Sci 2020; 11:5740-5744. [PMID: 32864086 PMCID: PMC7425081 DOI: 10.1039/d0sc01585g] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2020] [Accepted: 05/14/2020] [Indexed: 01/11/2023] Open
Abstract
The use of photochemical reactions that do not require expensive photocatalysts or transition metals is an environmentally friendly strategy for accomplishing a variety of structural transformations. Herein, we report a protocol for photoinduced transition-metal- and external-photocatalyst-free intramolecular heteroaryl/aryl rearrangement reactions of 2-heteroaryl/aryloxybenzaldehydes. The protocol was compatible with a variety of functionalities, including methyl, methoxy, cyano, ester, trifluoromethyl, halogen, and heteroaromatic rings. Control experiments suggested that the reaction proceeded via a photoinduced intramolecular heteroaryl/aryl rearrangement process involving photoexcitation of the aldehyde carbonyl group, radical addition, C-C bond formation and C(Ar)-O bond cleavage.
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Affiliation(s)
- Qian Dou
- The State Key Laboratory of Applied Organic Chemistry , College of Chemistry and Chemical Engineering , Lanzhou University , 222 Tianshui Road , Lanzhou , 730000 , P. R. China .
| | - Chao-Jun Li
- Department of Chemistry and FQRNT Centre for Green Chemistry and Catalysis , McGill University , 801 Sherbrooke St. West , Montreal , Quebec H3A 0B8 , Canada
| | - Huiying Zeng
- The State Key Laboratory of Applied Organic Chemistry , College of Chemistry and Chemical Engineering , Lanzhou University , 222 Tianshui Road , Lanzhou , 730000 , P. R. China .
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20
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Wang ZS, Chen YB, Zhang HW, Sun Z, Zhu C, Ye LW. Ynamide Smiles Rearrangement Triggered by Visible-Light-Mediated Regioselective Ketyl-Ynamide Coupling: Rapid Access to Functionalized Indoles and Isoquinolines. J Am Chem Soc 2020; 142:3636-3644. [PMID: 32003986 DOI: 10.1021/jacs.9b13975] [Citation(s) in RCA: 115] [Impact Index Per Article: 28.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
In the past decades, significant advances have been made on radical Smiles rearrangement. However, the eventually formed radical intermediates in these reactions are limited to the amidyl radical, except for the few examples initiated by a N-centered radical. Here, a novel and practical radical Smiles rearrangement triggered by photoredox-catalyzed regioselective ketyl-ynamide coupling is reported, which represents the first radical Smiles rearrangement of ynamides. This method enables facile access to a variety of valuable 2-benzhydrylindoles with broad substrate scope in generally good yields under mild reaction conditions. In addition, this chemistry can also be extended to the divergent synthesis of versatile 3-benzhydrylisoquinolines through a similar ketyl-ynamide coupling and radical Smiles rearrangement, followed by dehydrogenative oxidation. Moreover, such an ynamide Smiles rearrangement initiated by intermolecular photoredox catalysis via addition of external radical sources is also achieved. By control experiments, the reaction was shown to proceed via key ketyl radical and α-imino carbon radical intermediates.
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Affiliation(s)
- Ze-Shu Wang
- iChEM, State Key Laboratory of Physical Chemistry of Solid Surfaces, Key Laboratory of Chemical Biology of Fujian Province, and College of Chemistry and Chemical Engineering , Xiamen University , Xiamen 361005 , China
| | - Yang-Bo Chen
- iChEM, State Key Laboratory of Physical Chemistry of Solid Surfaces, Key Laboratory of Chemical Biology of Fujian Province, and College of Chemistry and Chemical Engineering , Xiamen University , Xiamen 361005 , China
| | - Hao-Wen Zhang
- iChEM, State Key Laboratory of Physical Chemistry of Solid Surfaces, Key Laboratory of Chemical Biology of Fujian Province, and College of Chemistry and Chemical Engineering , Xiamen University , Xiamen 361005 , China
| | - Zhou Sun
- iChEM, State Key Laboratory of Physical Chemistry of Solid Surfaces, Key Laboratory of Chemical Biology of Fujian Province, and College of Chemistry and Chemical Engineering , Xiamen University , Xiamen 361005 , China
| | - Chunyin Zhu
- School of Chemistry and Chemical Engineering , Jiangsu University , Zhenjiang 212013 , China
| | - Long-Wu Ye
- iChEM, State Key Laboratory of Physical Chemistry of Solid Surfaces, Key Laboratory of Chemical Biology of Fujian Province, and College of Chemistry and Chemical Engineering , Xiamen University , Xiamen 361005 , China.,State Key Laboratory of Organometallic Chemistry , Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences , Shanghai 200032 , China
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21
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Xia ZH, Dai L, Gao ZH, Ye S. N-Heterocyclic carbene/photo-cocatalyzed oxidative Smiles rearrangement: synthesis of aryl salicylates from O-aryl salicylaldehydes. Chem Commun (Camb) 2020; 56:1525-1528. [PMID: 31922178 DOI: 10.1039/c9cc09272b] [Citation(s) in RCA: 48] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
The N-heterocyclic carbene/photo-cocatalyzed oxidative Smiles rearrangement of O-aryl salicylaldehydes was developed. Both electron-deficient and electron-rich aryls worked well as migrating groups, giving the corresponding aryl salicylates in good yields. This reaction features formation of two new C-O bonds and one C-O bond cleavage via metal-free oxidation of the Breslow intermediate using oxygen as the terminal oxidant and following the Smiles rearrangement under photocatalysis.
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Affiliation(s)
- Zi-Hao Xia
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China.
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22
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Whalley DM, Duong HA, Greaney MF. A visible light-mediated, decarboxylative, desulfonylative Smiles rearrangement for general arylethylamine syntheses. Chem Commun (Camb) 2020; 56:11493-11496. [DOI: 10.1039/d0cc05049k] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
A decarboxylative, desulfonylative Smiles rearrangement is reported for the synthesis of a wide range of biologically relevant arylethylamines, including fluorinated phenylethylamines, heterocyclic amphetamines and an unnatural amino acid.
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Affiliation(s)
- David M. Whalley
- Institute of Chemical and Engineering Sciences (ICES) Agency for Science, Technology and Research (A*STAR)
- Singapore
- School of Chemistry
- The University of Manchester
- Manchester M13 9PL
| | - Hung A. Duong
- Institute of Chemical and Engineering Sciences (ICES) Agency for Science, Technology and Research (A*STAR)
- Singapore
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23
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Barlow HL, Rabet PTG, Durie A, Evans T, Greaney MF. Arylation Using Sulfonamides: Phenylacetamide Synthesis through Tandem Acylation–Smiles Rearrangement. Org Lett 2019; 21:9033-9035. [PMID: 31674791 DOI: 10.1021/acs.orglett.9b03429] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Helen L. Barlow
- School of Chemistry, University of Manchester, Oxford Road, Manchester M13 9PL, United Kingdom
| | - Pauline T. G. Rabet
- School of Chemistry, University of Manchester, Oxford Road, Manchester M13 9PL, United Kingdom
| | - Alastair Durie
- School of Chemistry, University of Manchester, Oxford Road, Manchester M13 9PL, United Kingdom
| | - Tim Evans
- School of Chemistry, University of Manchester, Oxford Road, Manchester M13 9PL, United Kingdom
| | - Michael F. Greaney
- School of Chemistry, University of Manchester, Oxford Road, Manchester M13 9PL, United Kingdom
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24
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Ruzi R, Ma J, Yuan X, Wang W, Wang S, Zhang M, Dai J, Xie J, Zhu C. Deoxygenative Arylation of Carboxylic Acids by Aryl Migration. Chemistry 2019; 25:12724-12729. [DOI: 10.1002/chem.201903816] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2019] [Indexed: 12/18/2022]
Affiliation(s)
- Rehanguli Ruzi
- State Key Laboratory of Coordination ChemistryJiangsu Key Laboratory of Advanced Organic MaterialsNational Demonstration Center for Experimental Chemistry EducationSchool of Chemistry and Chemical EngineeringNanjing, University Nanjing 210023 P. R. China
| | - Junyang Ma
- State Key Laboratory of Coordination ChemistryJiangsu Key Laboratory of Advanced Organic MaterialsNational Demonstration Center for Experimental Chemistry EducationSchool of Chemistry and Chemical EngineeringNanjing, University Nanjing 210023 P. R. China
| | - Xiang‐Ai Yuan
- School of Chemistry and Chemical EngineeringQufu Normal University Qufu 273165 P. R. China
| | - Wenliang Wang
- State Key Laboratory of Coordination ChemistryJiangsu Key Laboratory of Advanced Organic MaterialsNational Demonstration Center for Experimental Chemistry EducationSchool of Chemistry and Chemical EngineeringNanjing, University Nanjing 210023 P. R. China
| | - Shanshan Wang
- School of Chemistry and Chemical EngineeringQufu Normal University Qufu 273165 P. R. China
| | - Muliang Zhang
- State Key Laboratory of Coordination ChemistryJiangsu Key Laboratory of Advanced Organic MaterialsNational Demonstration Center for Experimental Chemistry EducationSchool of Chemistry and Chemical EngineeringNanjing, University Nanjing 210023 P. R. China
| | - Jie Dai
- State Key Laboratory of Coordination ChemistryJiangsu Key Laboratory of Advanced Organic MaterialsNational Demonstration Center for Experimental Chemistry EducationSchool of Chemistry and Chemical EngineeringNanjing, University Nanjing 210023 P. R. China
| | - Jin Xie
- State Key Laboratory of Coordination ChemistryJiangsu Key Laboratory of Advanced Organic MaterialsNational Demonstration Center for Experimental Chemistry EducationSchool of Chemistry and Chemical EngineeringNanjing, University Nanjing 210023 P. R. China
| | - Chengjian Zhu
- State Key Laboratory of Coordination ChemistryJiangsu Key Laboratory of Advanced Organic MaterialsNational Demonstration Center for Experimental Chemistry EducationSchool of Chemistry and Chemical EngineeringNanjing, University Nanjing 210023 P. R. China
- State Key Laboratory of Organometallic ChemistryInstitute of Organic Chemistry Shanghai 200032 P. R. China
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25
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Yasui K, Kamitani M, Tobisu M. N‐Heterocyclic Carbene Catalyzed Concerted Nucleophilic Aromatic Substitution of Aryl Fluorides Bearing α,β‐Unsaturated Amides. Angew Chem Int Ed Engl 2019; 58:14157-14161. [DOI: 10.1002/anie.201907837] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2019] [Revised: 07/23/2019] [Indexed: 02/05/2023]
Affiliation(s)
- Kosuke Yasui
- Department of Applied Chemistry Graduate School of Engineering Osaka University Suita Osaka 565-0871 Japan
| | - Miharu Kamitani
- Department of Applied Chemistry Graduate School of Engineering Osaka University Suita Osaka 565-0871 Japan
| | - Mamoru Tobisu
- Department of Applied Chemistry Graduate School of Engineering Osaka University Suita Osaka 565-0871 Japan
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26
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Yasui K, Kamitani M, Tobisu M. N‐Heterocyclic Carbene Catalyzed Concerted Nucleophilic Aromatic Substitution of Aryl Fluorides Bearing α,β‐Unsaturated Amides. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201907837] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Kosuke Yasui
- Department of Applied Chemistry Graduate School of Engineering Osaka University Suita Osaka 565-0871 Japan
| | - Miharu Kamitani
- Department of Applied Chemistry Graduate School of Engineering Osaka University Suita Osaka 565-0871 Japan
| | - Mamoru Tobisu
- Department of Applied Chemistry Graduate School of Engineering Osaka University Suita Osaka 565-0871 Japan
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27
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Li J, Liu Z, Wu S, Chen Y. Acyl Radical Smiles Rearrangement To Construct Hydroxybenzophenones by Photoredox Catalysis. Org Lett 2019; 21:2077-2080. [PMID: 30888188 DOI: 10.1021/acs.orglett.9b00353] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
The first visible-light-induced acyl radical Smiles rearrangement to transform biaryl ethers to hydroxybenzophenones under mild and metal-free conditions is reported. Using the dual catalysis of hypervalent iodine(III) reagents and organophotocatalysts, ketoacids readily generate acyl radicals and undergo 1,5- ipso addition. This method can construct electron-deficient and electron-rich hydroxybenzophenones with excellent chemoselectivity and on gram scale. The performance of the reaction in neutral aqueous conditions holds potential for future biomolecule applications.
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Affiliation(s)
- Junzhao Li
- State Key Laboratory of Bioorganic and Natural Products Chemistry, Center for Excellence in Molecular Synthesis , Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences , 345 Lingling Road , Shanghai 200032 China
| | - Zhengyi Liu
- State Key Laboratory of Bioorganic and Natural Products Chemistry, Center for Excellence in Molecular Synthesis , Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences , 345 Lingling Road , Shanghai 200032 China
| | - Shuang Wu
- State Key Laboratory of Bioorganic and Natural Products Chemistry, Center for Excellence in Molecular Synthesis , Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences , 345 Lingling Road , Shanghai 200032 China.,School of Physical Science and Technology , ShanghaiTech University , 100 Haike Road , Shanghai 201210 China
| | - Yiyun Chen
- State Key Laboratory of Bioorganic and Natural Products Chemistry, Center for Excellence in Molecular Synthesis , Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences , 345 Lingling Road , Shanghai 200032 China.,School of Physical Science and Technology , ShanghaiTech University , 100 Haike Road , Shanghai 201210 China
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28
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Chang X, Zhang Q, Guo C. Electrochemical Reductive Smiles Rearrangement for C–N Bond Formation. Org Lett 2018; 21:10-13. [DOI: 10.1021/acs.orglett.8b03178] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Xihao Chang
- Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei 230026, China
| | - Qinglin Zhang
- Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei 230026, China
| | - Chang Guo
- Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei 230026, China
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Lu S, Ong JY, Poh SB, Tsang T, Zhao Y. Transition-Metal-Free Decarboxylative Propargylic Substitution/Cyclization with either Azolium Enolates or Acyl Anions. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201801340] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Shenci Lu
- Department of Chemistry; National University of Singapore (NUS); 3 Science Drive 3 Singapore 117543 Singapore
| | - Jun-Yang Ong
- Department of Chemistry; National University of Singapore (NUS); 3 Science Drive 3 Singapore 117543 Singapore
- Graduate School for Integrative; Sciences Engineering (NGS), NUS; 28 Medical Drive 3 Singapore 117456 Singapore
| | - Si Bei Poh
- Department of Chemistry; National University of Singapore (NUS); 3 Science Drive 3 Singapore 117543 Singapore
| | - Terence Tsang
- Department of Chemistry; National University of Singapore (NUS); 3 Science Drive 3 Singapore 117543 Singapore
| | - Yu Zhao
- Department of Chemistry; National University of Singapore (NUS); 3 Science Drive 3 Singapore 117543 Singapore
- Graduate School for Integrative; Sciences Engineering (NGS), NUS; 28 Medical Drive 3 Singapore 117456 Singapore
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30
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Lu S, Ong JY, Poh SB, Tsang T, Zhao Y. Transition-Metal-Free Decarboxylative Propargylic Substitution/Cyclization with either Azolium Enolates or Acyl Anions. Angew Chem Int Ed Engl 2018; 57:5714-5719. [DOI: 10.1002/anie.201801340] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2018] [Revised: 03/22/2018] [Indexed: 11/06/2022]
Affiliation(s)
- Shenci Lu
- Department of Chemistry; National University of Singapore (NUS); 3 Science Drive 3 Singapore 117543 Singapore
| | - Jun-Yang Ong
- Department of Chemistry; National University of Singapore (NUS); 3 Science Drive 3 Singapore 117543 Singapore
- Graduate School for Integrative; Sciences Engineering (NGS), NUS; 28 Medical Drive 3 Singapore 117456 Singapore
| | - Si Bei Poh
- Department of Chemistry; National University of Singapore (NUS); 3 Science Drive 3 Singapore 117543 Singapore
| | - Terence Tsang
- Department of Chemistry; National University of Singapore (NUS); 3 Science Drive 3 Singapore 117543 Singapore
| | - Yu Zhao
- Department of Chemistry; National University of Singapore (NUS); 3 Science Drive 3 Singapore 117543 Singapore
- Graduate School for Integrative; Sciences Engineering (NGS), NUS; 28 Medical Drive 3 Singapore 117456 Singapore
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31
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N-Heterocyclic Carbene-Catalyzed Double Michael Addition: Stereoselective Synthesis of Spirofluorenes and Multisubstituted Indanes. Adv Synth Catal 2018. [DOI: 10.1002/adsc.201701269] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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32
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Wang SF, Cao XP, Li Y. Efficient Aryl Migration from an Aryl Ether to a Carboxylic Acid Group To Form an Ester by Visible-Light Photoredox Catalysis. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201706597] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Shao-Feng Wang
- State Key Laboratory of Applied Organic Chemistry and College of Chemistry and Chemical Engineering; Lanzhou University; Lanzhou Gansu 730000 China
- Center for Organic Chemistry; Frontier Institute of Science and Technology; Xi'an Jiaotong University; Xi'an Shaanxi 710054 China
| | - Xiao-Ping Cao
- State Key Laboratory of Applied Organic Chemistry and College of Chemistry and Chemical Engineering; Lanzhou University; Lanzhou Gansu 730000 China
| | - Yang Li
- Center for Organic Chemistry; Frontier Institute of Science and Technology; Xi'an Jiaotong University; Xi'an Shaanxi 710054 China
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33
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Wang SF, Cao XP, Li Y. Efficient Aryl Migration from an Aryl Ether to a Carboxylic Acid Group To Form an Ester by Visible-Light Photoredox Catalysis. Angew Chem Int Ed Engl 2017; 56:13809-13813. [DOI: 10.1002/anie.201706597] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2017] [Indexed: 11/07/2022]
Affiliation(s)
- Shao-Feng Wang
- State Key Laboratory of Applied Organic Chemistry and College of Chemistry and Chemical Engineering; Lanzhou University; Lanzhou Gansu 730000 China
- Center for Organic Chemistry; Frontier Institute of Science and Technology; Xi'an Jiaotong University; Xi'an Shaanxi 710054 China
| | - Xiao-Ping Cao
- State Key Laboratory of Applied Organic Chemistry and College of Chemistry and Chemical Engineering; Lanzhou University; Lanzhou Gansu 730000 China
| | - Yang Li
- Center for Organic Chemistry; Frontier Institute of Science and Technology; Xi'an Jiaotong University; Xi'an Shaanxi 710054 China
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