1
|
Cook A, Newman SG. Alcohols as Substrates in Transition-Metal-Catalyzed Arylation, Alkylation, and Related Reactions. Chem Rev 2024; 124:6078-6144. [PMID: 38630862 DOI: 10.1021/acs.chemrev.4c00094] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/19/2024]
Abstract
Alcohols are abundant and attractive feedstock molecules for organic synthesis. Many methods for their functionalization require them to first be converted into a more activated derivative, while recent years have seen a vast increase in the number of complexity-building transformations that directly harness unprotected alcohols. This Review discusses how transition metal catalysis can be used toward this goal. These transformations are broadly classified into three categories. Deoxygenative functionalizations, representing derivatization of the C-O bond, enable the alcohol to act as a leaving group toward the formation of new C-C bonds. Etherifications, characterized by derivatization of the O-H bond, represent classical reactivity that has been modernized to include mild reaction conditions, diverse reaction partners, and high selectivities. Lastly, chain functionalization reactions are described, wherein the alcohol group acts as a mediator in formal C-H functionalization reactions of the alkyl backbone. Each of these three classes of transformation will be discussed in context of intermolecular arylation, alkylation, and related reactions, illustrating how catalysis can enable alcohols to be directly harnessed for organic synthesis.
Collapse
Affiliation(s)
- Adam Cook
- Centre for Catalysis Research and Innovation, Department of Chemistry and Biomolecular Sciences, University of Ottawa, 10 Marie Curie, Ottawa, Ontario K1N 6N5, Canada
| | - Stephen G Newman
- Centre for Catalysis Research and Innovation, Department of Chemistry and Biomolecular Sciences, University of Ottawa, 10 Marie Curie, Ottawa, Ontario K1N 6N5, Canada
| |
Collapse
|
2
|
Guin AK, Pal S, Chakraborty S, Chakraborty S, Paul ND. Oxygen Dependent Switchable Selectivity during Ruthenium Catalyzed Selective Synthesis of C3-Alkylated Indoles and Bis(indolyl)methanes. J Org Chem 2023. [PMID: 38015094 DOI: 10.1021/acs.joc.3c01191] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2023]
Abstract
Herein, we report a ligand-centered redox-controlled oxygen-dependent switchable selectivity during ruthenium-catalyzed selective synthesis of C3-alkylated indoles and bis(indolyl)methanes (BIMs). A wide variety of C3-alkylated indoles and BIMs were prepared selectively in moderate to good isolated yields by coupling a wide variety of indoles and alcohols, catalyzed by a well-defined, air-stable, and easy-to-prepare Ru(II)-catalyst (1a) bearing a redox-active tridentate pincer (L1a). Catalyst 1a efficiently catalyzed the C3-alkylation of indoles under an argon atmosphere while, under an oxygen environment, exclusively producing the BIMs. A few drug molecules containing BIMs were also synthesized efficiently. 1a exhibited excellent chemoselectivity with alcohols containing internal carbon-carbon double bonds. Mechanistic investigation revealed that the coordinated azo-aromatic ligand actively participates during the catalysis. During the dehydrogenation of alcohols, the azo-moiety of the ligand stores the hydrogen removed from the alcohols and subsequently transfers the hydrogen to the alkylideneindolenine intermediate, forming the C3-alkylated indoles. While under an oxygen environment, the transfer of hydrogen from the ligand scaffold to the molecular oxygen generates H2O2, leaving no scope for hydrogenation of the alkylideneindolenine intermediate, rather than it undergoing 1,4-Michael-type addition forming the BIMs.
Collapse
Affiliation(s)
- Amit Kumar Guin
- Department of Chemistry, Indian Institute of Engineering Science and Technology, Shibpur, Botanic Garden, Howrah 711103, India
| | - Subhasree Pal
- Department of Chemistry, Indian Institute of Engineering Science and Technology, Shibpur, Botanic Garden, Howrah 711103, India
| | - Subhajit Chakraborty
- Department of Chemistry, Indian Institute of Engineering Science and Technology, Shibpur, Botanic Garden, Howrah 711103, India
| | - Santana Chakraborty
- Department of Chemistry, Indian Institute of Engineering Science and Technology, Shibpur, Botanic Garden, Howrah 711103, India
| | - Nanda D Paul
- Department of Chemistry, Indian Institute of Engineering Science and Technology, Shibpur, Botanic Garden, Howrah 711103, India
| |
Collapse
|
3
|
Pazur EJ, Tasker NR, Wipf P. C3-Functionalization of indoles with α-heteroaryl-substituted methyl alcohols. Org Biomol Chem 2023; 21:8651-8657. [PMID: 37873703 DOI: 10.1039/d3ob01432k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2023]
Abstract
The transition metal-free Cs2CO3/Oxone®-mediated C3-alkylation of indoles proceeds in moderate to high yields with a variety of C4-C7 functionalized indoles and is applicable to 2-, 3- and 4-hydroxymethyl pyridines and related electron-deficient heterocycles, permitting novel late-stage drug functionalizations. Preliminary mechanistic studies support a hydrogen autotransfer-type chain process starting with an initial oxidation of the alcohol to the corresponding aldehyde, followed by a subsequent condensation onto indole and reduction/hydride delivery from another equivalent of the primary alcohol.
Collapse
Affiliation(s)
- Ethan J Pazur
- Department of Chemistry, University of Pittsburgh, Pittsburgh, PA 15260, USA.
| | - Nikhil R Tasker
- Department of Chemistry, University of Pittsburgh, Pittsburgh, PA 15260, USA.
| | - Peter Wipf
- Department of Chemistry, University of Pittsburgh, Pittsburgh, PA 15260, USA.
| |
Collapse
|
4
|
Visible light mediated Iron-Catalyzed synthesis of C-3 alkylated Indoles, bisindolylmethanes and flavanones using alcohols. Tetrahedron Lett 2023. [DOI: 10.1016/j.tetlet.2023.154428] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/06/2023]
|
5
|
Biswas S, Barman D, Gogoi G, Hoque N, Devi A, Purkayastha SK, Guha AK, Nath JK, Bania KK. Heterogeneous iron catalyst for C(1)-H functionalization of 2-naphthols with primary aromatic alcohols. Org Biomol Chem 2023; 21:1657-1661. [PMID: 36727302 DOI: 10.1039/d3ob00004d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
An iron oxide nanocatalyst supported on a potassium exchanged zeolite-Y (Fe2O3-KY) is an efficient and reusable catalyst that promotes the selective α-H functionalization of 2-naphthols with various aromatic primary alcohols. The reaction occurs at 110 °C in dichloroethane and requires 6 h for completion. The product yields were found to vary with respect to the nature of the substituents. Benzyl alcohols with electron-donating groups gave the highest yields of up to 90%.
Collapse
Affiliation(s)
- Subir Biswas
- Department of Chemical Sciences, Tezpur University, Assam 784028, India.
| | - Dipankar Barman
- Department of Chemistry, Indian Institute of Technology Guwahati, Assam 781039, India
| | - Gautam Gogoi
- Department of Chemical Sciences, Tezpur University, Assam 784028, India.
| | - Nazimul Hoque
- Department of Chemical Sciences, Tezpur University, Assam 784028, India.
| | - Arpita Devi
- Department of Chemical Sciences, Tezpur University, Assam 784028, India.
| | | | | | - Jayanta K Nath
- Department of Chemistry, S.B. Deorah College, Ulubari, Guwahati, Assam, India
| | - Kusum K Bania
- Department of Chemical Sciences, Tezpur University, Assam 784028, India.
| |
Collapse
|
6
|
Yadav V, Jagtap SG, Balaraman E, Mhaske SB. Nickel-Catalyzed Direct Synthesis of N-Substituted Indoles from Amino Alcohols and Alcohols. Org Lett 2022; 24:9054-9059. [DOI: 10.1021/acs.orglett.2c03617] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Vinita Yadav
- Division of Organic Chemistry, CSIR-National Chemical Laboratory (CSIR-NCL), Pune 411008, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Sayali G. Jagtap
- Division of Organic Chemistry, CSIR-National Chemical Laboratory (CSIR-NCL), Pune 411008, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Ekambaram Balaraman
- Department of Chemistry, Indian Institute of Science Education and Research (IISER) Tirupati, Tirupati 517507, India
| | - Santosh B. Mhaske
- Division of Organic Chemistry, CSIR-National Chemical Laboratory (CSIR-NCL), Pune 411008, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| |
Collapse
|
7
|
Wu J, Tongdee S, Cordier M, Darcel C. Selective Iron Catalyzed Synthesis of N-Alkylated Indolines and Indoles. Chemistry 2022; 28:e202201809. [PMID: 35700072 PMCID: PMC9796591 DOI: 10.1002/chem.202201809] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2022] [Indexed: 01/01/2023]
Abstract
Whereas iron catalysts usually promote catalyzed C3-alkylation of indole derivatives via a borrowing-hydrogen methodology using alcohols as the electrophilic partners, this contribution shows how to switch the selectivity towards N-alkylation. Thus, starting from indoline derivatives, N-alkylation was efficiently performed using a tricarbonyl(cyclopentadienone) iron complex as the catalyst in trifluoroethanol in the presence of alcohols leading to the corresponding N-alkylated indoline derivatives in 31-99 % yields (28 examples). The one-pot, two-step strategy for the selective N-alkylation of indolines is completed by an oxidation to give the corresponding N-alkylated indoles in 31-90 % yields (15 examples). This unprecedented oxidation methodology involves an iron salt catalyst associated with (2,2,6,6-tetramethylpiperidin-1-yl)oxyl (TEMPO) and a stoichiometric amount of t-BuOOH at room temperature.
Collapse
Affiliation(s)
- Jiajun Wu
- Univ RennesCNRSISCR (Institut des Sciences Chimiques de Rennes) UMR 622635000RennesFrance
| | - Satawat Tongdee
- Univ RennesCNRSISCR (Institut des Sciences Chimiques de Rennes) UMR 622635000RennesFrance
| | - Marie Cordier
- Univ RennesCNRSISCR (Institut des Sciences Chimiques de Rennes) UMR 622635000RennesFrance
| | - Christophe Darcel
- Univ RennesCNRSISCR (Institut des Sciences Chimiques de Rennes) UMR 622635000RennesFrance
| |
Collapse
|
8
|
Zhao M, Li X, Zhang X, Shao Z. Efficient Synthesis of C3-Alkylated and Alkenylated Indoles via Manganese-Catalyzed Dehydrogenation. Chem Asian J 2022; 17:e202200483. [PMID: 35771722 DOI: 10.1002/asia.202200483] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2022] [Revised: 06/15/2022] [Indexed: 11/10/2022]
Abstract
The catalytic dehydrogenation of alcohols is essential for the sustainable production of valuable products. This provids a new strategy for green organic synthesis in chemical industries. Herein, we describe a manganese-based catalytic system that enables the efficient synthesis of C3-alkylated indoles from benzyl alcohols and indoles via the borrowing hydrogen process. Furthermore, dehydrogenative coupling of 2-arylethanols and indoles yields C3-alkenylated indoles. Meanwhile, reacting 2-aminophenethanol instead of indoles can also obtain the corresponding indole products with high selectivity under the same conditions.
Collapse
Affiliation(s)
- Mingqin Zhao
- Henan University, College of Tobacco Science, CHINA
| | - Xinyan Li
- Henan Agricultural University, College of Tobacco Science, CHINA
| | - Xiaoyu Zhang
- Henan Agricultural University, College of Tobacco Science, CHINA
| | - Zhihui Shao
- Henan Agricultural University, College of Tobacco Science, Wenhua Road, 450002, Zhengzhou, CHINA
| |
Collapse
|
9
|
Mondal A, Sharma R, Dutta B, Pal D, Srimani D. Well-Defined NNS-Mn Complex Catalyzed Selective Synthesis of C-3 Alkylated Indoles and Bisindolylmethanes Using Alcohols. J Org Chem 2022; 87:3989-4000. [PMID: 35258302 DOI: 10.1021/acs.joc.1c02702] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Herein, we demonstrated Mn-catalyzed selective C-3 functionalization of indoles with alcohols. The developed catalyst can also furnish bis(indolyl)methanes from the same set of substrates under slightly modified reaction conditions. Mechanistic studies reveal that the C-3 functionalization of indoles is going via a borrowing hydrogen pathway. To highlight the practical utility, a diverse range of substrates including nine structurally important drug molecules are synthesized. Furthermore, we also introduced a one-pot cascade strategy for synthesizing C-3 functionalized indoles directly from 2-aminophenyl ethanol and alcohol.
Collapse
Affiliation(s)
- Avijit Mondal
- Department of Chemistry, Indian Institute of Technology-Guwahati, Kamrup, Assam 781039, India
| | - Rahul Sharma
- Department of Chemistry, Indian Institute of Technology-Guwahati, Kamrup, Assam 781039, India
| | - Bishal Dutta
- Department of Chemistry, Indian Institute of Technology-Guwahati, Kamrup, Assam 781039, India
| | - Debjyoti Pal
- Department of Chemistry, Indian Institute of Technology-Guwahati, Kamrup, Assam 781039, India
| | - Dipankar Srimani
- Department of Chemistry, Indian Institute of Technology-Guwahati, Kamrup, Assam 781039, India
| |
Collapse
|
10
|
Yang G, Pan J, Ke Y, Liu Y, Zhao Y. Tandem Catalytic Indolization/Enantioconvergent Substitution of Alcohols by Borrowing Hydrogen to Access Tricyclic Indoles. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202106514] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Guoqiang Yang
- Department of Chemistry, National University of Singapore 3 Science Drive 3 Singapore 117543 Singapore
| | - Jiaoting Pan
- Department of Chemistry, National University of Singapore 3 Science Drive 3 Singapore 117543 Singapore
- Joint School of National University of Singapore and Tianjin University International Campus of Tianjin University Binhai New City Fuzhou 350207 China
| | - Ya‐Ming Ke
- Department of Chemistry, National University of Singapore 3 Science Drive 3 Singapore 117543 Singapore
| | - Yongbing Liu
- Department of Chemistry, National University of Singapore 3 Science Drive 3 Singapore 117543 Singapore
| | - Yu Zhao
- Department of Chemistry, National University of Singapore 3 Science Drive 3 Singapore 117543 Singapore
- Joint School of National University of Singapore and Tianjin University International Campus of Tianjin University Binhai New City Fuzhou 350207 China
| |
Collapse
|
11
|
Yang G, Pan J, Ke YM, Liu Y, Zhao Y. Tandem Catalytic Indolization/Enantioconvergent Substitution of Alcohols by Borrowing Hydrogen to Access Tricyclic Indoles. Angew Chem Int Ed Engl 2021; 60:20689-20694. [PMID: 34236747 DOI: 10.1002/anie.202106514] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2021] [Revised: 07/01/2021] [Indexed: 12/24/2022]
Abstract
An efficient tandem catalysis method is achieved for the direct conversion of alcohol-containing alkynyl anilines to valuable chiral 2,3-fused tricyclic indoles. This method relies on a tandem indolization followed by enantioconvergent substitution of alcohols via borrowing hydrogen to construct two rings in one step, enabled by relay and cooperative catalysis of a chiral iridium complex with a chiral phosphoric acid. Highly diastereoselective transformations of the tricyclic indole products also provide efficient access to a diverse array of complex polycyclic indoline compounds.
Collapse
Affiliation(s)
- Guoqiang Yang
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore, 117543, Singapore
| | - Jiaoting Pan
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore, 117543, Singapore.,Joint School of National University of Singapore and Tianjin University, International Campus of Tianjin University, Binhai New City, Fuzhou, 350207, China
| | - Ya-Ming Ke
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore, 117543, Singapore
| | - Yongbing Liu
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore, 117543, Singapore
| | - Yu Zhao
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore, 117543, Singapore.,Joint School of National University of Singapore and Tianjin University, International Campus of Tianjin University, Binhai New City, Fuzhou, 350207, China
| |
Collapse
|
12
|
Miao Y, Samuelsen SV, Madsen R. Vanadium- and Chromium-Catalyzed Dehydrogenative Synthesis of Imines from Alcohols and Amines. Organometallics 2021. [DOI: 10.1021/acs.organomet.1c00123] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Yulong Miao
- Department of Chemistry, Technical University of Denmark, 2800 Kgs. Lyngby, Denmark
| | - Simone V. Samuelsen
- Department of Chemistry, Technical University of Denmark, 2800 Kgs. Lyngby, Denmark
| | - Robert Madsen
- Department of Chemistry, Technical University of Denmark, 2800 Kgs. Lyngby, Denmark
| |
Collapse
|
13
|
Khopade T, Ajayan K, Joshi SS, Lane AL, Viswanathan R. Bioinspired Brønsted Acid-Promoted Regioselective Tryptophan Isoprenylations. ACS OMEGA 2021; 6:10840-10858. [PMID: 34056238 PMCID: PMC8153798 DOI: 10.1021/acsomega.1c00515] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/28/2021] [Accepted: 03/16/2021] [Indexed: 05/16/2023]
Abstract
Tryptophan-containing isoprenoid indole alkaloid natural products are well known for their intricate structural architectures and significant biological activities. Nature employs dimethylallyl tryptophan synthases (DMATSs) or aromatic indole prenyltransferases (iPTs) to catalyze regio- and stereoselective prenylation of l-Trp. Regioselective synthetic routes that isoprenylate cyclo-Trp-Trp in a 2,5-diketopiperazine (DKP) core, in a desymmetrizing manner, are nonexistent and are highly desirable. Herein, we present an elaborate report on Brønsted acid-promoted regioselective tryptophan isoprenylation strategy, applicable to both the monomeric amino acid and its dimeric l-Trp DKP. This report outlines a method that regio- and stereoselectively increases sp3 centers of a privileged bioactive core. We report on conditions involving screening of Brønsted acids, their conjugate base as salt, solvent, temperature, and various substrates with diverse side chains. Furthermore, we extensively delineate effects on regio- and stereoselection of isoprenylation and their stereochemical confirmation via NMR experiments. Regioselectively, the C3-position undergoes normal-isoprenylation or benzylation and forms exo-ring-fused pyrroloindolines selectively. Through appropriate prenyl group migrations, we report access to the bioactive tryprostatin alkaloids, and by C3-normal-farnesylation, we access anticancer drimentines as direct targets of this method. The optimized strategy affords iso-tryprostatin B-type products and predrimentine C with 58 and 55% yields, respectively. The current work has several similarities to biosynthesis, such as-reactions can be performed on unprotected substrates, conditions that enable Brønsted acid promotion, and they are easy to perform under ambient conditions, without the need for stoichiometric levels of any transition metal or expensive ligands.
Collapse
Affiliation(s)
- Tushar
M. Khopade
- Departments
of Chemistry & Biology, Indian Institute
of Science Education and Research, Tirupati 517507, Andhra
Pradesh India
| | - Kalyani Ajayan
- Departments
of Chemistry & Biology, Indian Institute
of Science Education and Research, Tirupati 517507, Andhra
Pradesh India
| | - Swapnil S. Joshi
- Departments
of Chemistry & Biology, Indian Institute
of Science Education and Research, Tirupati 517507, Andhra
Pradesh India
| | - Amy L. Lane
- Department
of Chemistry, University of North Florida, Jacksonville 32224, Florida, United States
| | - Rajesh Viswanathan
- Departments
of Chemistry & Biology, Indian Institute
of Science Education and Research, Tirupati 517507, Andhra
Pradesh India
- Department
of Chemistry, University of North Florida, Jacksonville 32224, Florida, United States
| |
Collapse
|
14
|
Nguyen NK, Nam DH, Phuc BV, Nguyen VH, Trịnh QT, Hung TQ, Dang TT. Efficient copper-catalyzed synthesis of C3-alkylated indoles from indoles and alcohols. MOLECULAR CATALYSIS 2021. [DOI: 10.1016/j.mcat.2021.111462] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
|
15
|
Li WZ, Wang ZX. Nickel-catalyzed coupling of R 2P(O)Me (R = aryl or alkoxy) with (hetero)arylmethyl alcohols. Org Biomol Chem 2021; 19:2233-2242. [PMID: 33616130 DOI: 10.1039/d1ob00086a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
α-Alkylation of methyldiarylphosphine oxides with (hetero)arylmethyl alcohols was performed under nickel catalysis. Various arylmethyl and heteroarylmethyl alcohols can be used in this transformation. A series of methyldiarylphosphine oxides were alkylated with 30-90% yields. Functional groups on the aromatic rings of methyldiarylphosphine oxides or arylmethyl alcohols including OMe, NMe2, SMe, CF3, Cl, and F groups can be tolerated. The conditions are also suitable for the α-alkylation reaction of dialkyl methylphosphonates.
Collapse
Affiliation(s)
- Wei-Ze Li
- CAS Key Laboratory of Soft Matter Chemistry and Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China.
| | - Zhong-Xia Wang
- CAS Key Laboratory of Soft Matter Chemistry and Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China. and Collaborative Innovation Center of Chemical Science and Engineering, Tianjin 300072, P. R. China
| |
Collapse
|
16
|
Liu HX, Ji F, Chen Y, Gao Y, Wang JK, Zhang MZ, Liu F, Sha Q. De Novo and Divergent Synthesis of Highly Functionalized Furans by Cascade Reactions of 2-Hydroxy-1,4-diones with Nucleophiles. Chemistry 2021; 27:5225-5229. [PMID: 33427337 DOI: 10.1002/chem.202005098] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2020] [Revised: 12/17/2020] [Indexed: 11/10/2022]
Abstract
Herein, a divergent synthesis of a variety of 2α- and 5α-substituted furan derivatives from 2-hydroxy-1,4-diones is reported. By using appropriate substrates and an acid catalyst, the reactions occurred selectively through cyclization/1,6-conjugate addition or cyclization/Friedel-Crafts-type cascade reactions. A broad range of nucleophilic reagents (>10 types for the 1,6-conjugate addition for 5α substitution and >20 types for the Friedel-Crafts-type cascade reaction for 2α substitution), including alcohols, amides, furan, thiophene, pyrrole, indole, phenols, and many others, can successfully participate in the reactions, providing a universal strategy for a diversity-oriented synthesis of α-substituted furan derivatives. Deuteriation experiments and DFT calculations were carried out to support the proposed reaction mechanisms. Antifungal activity experiments revealed that products with an indole or 4-hydroxycoumarin core substituted at the 2α position showed moderate activities against Rhizoctorzia solani and Botrytis cinerea, respectively.
Collapse
Affiliation(s)
- Hai-Xuan Liu
- Jiangsu Key Laboratory of Pesticide Science, and Department of, Chemistry, College of Sciences, Nanjing Agricultural University, 1 Weigang Road, Xuanwu District, Nanjing, 210095, P.R. China
| | - Fei Ji
- Department of Pharmaceutical Engineering, China Pharmaceutical University, 639 Longmian Avenue, Jiangning District, Nanjing, 211198, P.R. China
| | - Yu Chen
- School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, P.R. China
| | - Ya Gao
- Jiangsu Key Laboratory of Pesticide Science, and Department of, Chemistry, College of Sciences, Nanjing Agricultural University, 1 Weigang Road, Xuanwu District, Nanjing, 210095, P.R. China
| | - Jun-Ke Wang
- Jiangsu Key Laboratory of Pesticide Science, and Department of, Chemistry, College of Sciences, Nanjing Agricultural University, 1 Weigang Road, Xuanwu District, Nanjing, 210095, P.R. China
| | - Ming-Zhi Zhang
- Jiangsu Key Laboratory of Pesticide Science, and Department of, Chemistry, College of Sciences, Nanjing Agricultural University, 1 Weigang Road, Xuanwu District, Nanjing, 210095, P.R. China
| | - Fang Liu
- Jiangsu Key Laboratory of Pesticide Science, and Department of, Chemistry, College of Sciences, Nanjing Agricultural University, 1 Weigang Road, Xuanwu District, Nanjing, 210095, P.R. China
| | - Qiang Sha
- Jiangsu Key Laboratory of Pesticide Science, and Department of, Chemistry, College of Sciences, Nanjing Agricultural University, 1 Weigang Road, Xuanwu District, Nanjing, 210095, P.R. China
| |
Collapse
|
17
|
Zhou J, Li T, Li M, Li C, Hu X, Jin L, Sun N, Hu B, Shen Z. FeCl
2
‐Catalyzed Direct C
2
‐Benzylation of Benzofurans with Diarylmethanes via Cross Dehydrogenative Coupling. ASIAN J ORG CHEM 2021. [DOI: 10.1002/ajoc.202100006] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Jiacheng Zhou
- College of Chemical Engineering Zhejiang University of Technology P. R. China
| | - Tianci Li
- College of Chemical Engineering Zhejiang University of Technology P. R. China
| | - Meichao Li
- College of Chemical Engineering Zhejiang University of Technology P. R. China
| | - Chunmei Li
- College of Chemical Engineering Zhejiang University of Technology P. R. China
- School of Chemistry and Chemical Engineering Zhejiang Key Laboratory of Alternative Technologies for Fine Chemicals Process Shaoxing University P. R. China
| | - Xinquan Hu
- College of Chemical Engineering Zhejiang University of Technology P. R. China
| | - Liqun Jin
- College of Chemical Engineering Zhejiang University of Technology P. R. China
| | - Nan Sun
- College of Chemical Engineering Zhejiang University of Technology P. R. China
| | - Baoxiang Hu
- College of Chemical Engineering Zhejiang University of Technology P. R. China
| | - Zhenlu Shen
- College of Chemical Engineering Zhejiang University of Technology P. R. China
| |
Collapse
|
18
|
Hu M, Jiang Y, Sun N, Hu B, Shen Z, Hu X, Jin L. Nickel-catalyzed C3-alkylation of indoles with alcohols via a borrowing hydrogen strategy. NEW J CHEM 2021. [DOI: 10.1039/d1nj01581h] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
An efficient Ni-catalyzed C3-alkylation of indoles with alcohols via a borrowing hydrogen pathway was achieved utilizing an N,O-donor coordinated nickel complex as the precatalyst.
Collapse
Affiliation(s)
- Miao Hu
- College of Chemical Engineering
- Zhejiang University of Technology
- Hangzhou 310032
- P. R. China
| | - Yong Jiang
- College of Chemical Engineering
- Zhejiang University of Technology
- Hangzhou 310032
- P. R. China
| | - Nan Sun
- College of Chemical Engineering
- Zhejiang University of Technology
- Hangzhou 310032
- P. R. China
| | - Baoxiang Hu
- College of Chemical Engineering
- Zhejiang University of Technology
- Hangzhou 310032
- P. R. China
| | - Zhenlu Shen
- College of Chemical Engineering
- Zhejiang University of Technology
- Hangzhou 310032
- P. R. China
| | - Xinquan Hu
- College of Chemical Engineering
- Zhejiang University of Technology
- Hangzhou 310032
- P. R. China
| | - Liqun Jin
- College of Chemical Engineering
- Zhejiang University of Technology
- Hangzhou 310032
- P. R. China
- State Key Laboratory for Oxo Synthesis and Selective Oxidation
| |
Collapse
|
19
|
Rana S, Biswas JP, Paul S, Paik A, Maiti D. Organic synthesis with the most abundant transition metal–iron: from rust to multitasking catalysts. Chem Soc Rev 2021; 50:243-472. [DOI: 10.1039/d0cs00688b] [Citation(s) in RCA: 85] [Impact Index Per Article: 28.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The promising aspects of iron in synthetic chemistry are being explored for three-four decades as a green and eco-friendly alternative to late transition metals. This present review unveils these rich iron-chemistry towards different transformations.
Collapse
Affiliation(s)
- Sujoy Rana
- Department of Chemistry
- University of North Bengal
- Darjeeling
- India
| | | | - Sabarni Paul
- Department of Chemistry
- University of North Bengal
- Darjeeling
- India
| | - Aniruddha Paik
- Department of Chemistry
- University of North Bengal
- Darjeeling
- India
| | - Debabrata Maiti
- Department of Chemistry
- IIT Bombay
- Mumbai-400076
- India
- Tokyo Tech World Research Hub Initiative (WRHI)
| |
Collapse
|
20
|
Arun V, Roy L, De Sarkar S. Alcohols as Fluoroalkyl Synthons: Ni-catalyzed Dehydrogenative Approach to Access Polyfluoroalkyl Bis-indoles. Chemistry 2020; 26:16649-16654. [PMID: 32914904 DOI: 10.1002/chem.202003912] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2020] [Indexed: 01/04/2023]
Abstract
An acceptorless dehydrogenative strategy for the synthesis of polyfluoroalkylated bis-indoles is described by employing an earth-abundant nickel-based catalytic system under air. The notable feature of the present transformation is the use of bench stable and easily affordable polyfluorinated alcohols without any pre-functionalization for the introduction of precious polyfluoroalkyl groups. The developed straightforward protocol accomplished biologically relevant fluoroalkyl bis-indoles in a sustainable fashion. Extensive DFT study predicts the unique role of indole molecules which stabilizes the transition states during the dehydrogenation process of polyfluorinated alcohols, presumably through non-covalent π⋅⋅⋅π and H-bonding interactions.
Collapse
Affiliation(s)
- V Arun
- Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur, 741246, West Bengal, India
| | - Lisa Roy
- Institute of Chemical Technology Mumbai, IOC Odisha Campus Bhubaneswar, IIT Kharagpur Extension Centre, Bhubaneswar, 751013, India
| | - Suman De Sarkar
- Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur, 741246, West Bengal, India
| |
Collapse
|
21
|
Bains AK, Biswas A, Adhikari D. Nickel-catalysed chemoselective C-3 alkylation of indoles with alcohols through a borrowing hydrogen method. Chem Commun (Camb) 2020; 56:15442-15445. [PMID: 33231589 DOI: 10.1039/d0cc07169b] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
An inexpensive, air-stable, isolable nickel catalyst is reported that can perform chemoselective C3-alkylation of indoles with a variety of alcohols following "borrowing hydrogen". A one-pot, cascade C3-alkylation starting from 2-aminophenyl ethyl alcohols, and thus obviating the need for pre-synthesized indoles, further adds to the broad scope of this method. The reaction is radical-mediated, and is significantly different from other examples, often dictated by metal-ligand bifunctionality.
Collapse
Affiliation(s)
- Amreen K Bains
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER), Mohali, Sector-81, Knowledge City, Manauli-140306, India.
| | | | | |
Collapse
|
22
|
Chun S, Ahn J, Putta RR, Lee SB, Oh DC, Hong S. Direct Synthesis of Pyrrolo[1,2-α]quinoxalines via Iron-Catalyzed Transfer Hydrogenation between 1-(2-Nitrophenyl)pyrroles and Alcohols. J Org Chem 2020; 85:15314-15324. [DOI: 10.1021/acs.joc.0c02145] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Simin Chun
- Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea
| | - Jiwon Ahn
- Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea
| | - Ramachandra Reddy Putta
- BK 21 Plus Project, College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea
| | - Seok Beom Lee
- Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea
| | - Dong-Chan Oh
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea
| | - Suckchang Hong
- Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea
| |
Collapse
|
23
|
Khusnutdinov RI, Bayguzina AR. New advances in the catalysis of organic reactions by iron compounds. RUSSIAN CHEMICAL REVIEWS 2020. [DOI: 10.1070/rcr4943] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
The review summarizes and systematizes the literature data on a new promising application area of iron compounds, that is, catalysis of organic reactions. The considered reactions include halogenation, formation of C−C bonds with the participation of various substrates, new methods for the synthesis of ethers and aromatic and heteroaromatic carboxylic acid esters, N-alkylation of aliphatic and aromatic amines and amidation of olefins and cyclopropane-containing hydrocarbons. The advances in the synthesis of quinolines and unusual cyclization reactions catalyzed by iron complexes are described.
The bibliography includes 144 references.
Collapse
|
24
|
Ferric Chloride Catalyzed 1,3-Rearrangement of (Phenoxymethyl)heteroarenes to (Heteroarylmethyl)phenols. European J Org Chem 2020. [DOI: 10.1002/ejoc.202000419] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
|
25
|
Biswas N, Sharma R, Srimani D. Ruthenium Pincer Complex Catalyzed Selective Synthesis of C‐3 Alkylated Indoles and Bisindolylmethanes Directly from Indoles and Alcohols. Adv Synth Catal 2020. [DOI: 10.1002/adsc.202000326] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Nandita Biswas
- Department of ChemistryIndian Institute of Technology Guwahati Assam India 781039
| | - Rahul Sharma
- Department of ChemistryIndian Institute of Technology Guwahati Assam India 781039
| | - Dipankar Srimani
- Department of ChemistryIndian Institute of Technology Guwahati Assam India 781039
| |
Collapse
|
26
|
Borghs JC, Zubar V, Azofra LM, Sklyaruk J, Rueping M. Manganese-Catalyzed Regioselective Dehydrogenative C- versus N-Alkylation Enabled by a Solvent Switch: Experiment and Computation. Org Lett 2020; 22:4222-4227. [DOI: 10.1021/acs.orglett.0c01270] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Affiliation(s)
- Jannik C. Borghs
- Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52074 Aachen, Germany
| | - Viktoriia Zubar
- Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52074 Aachen, Germany
- KAUST Catalysis Center (KCC), KAUST, Thuwal 23955-6900, Saudi Arabia
| | - Luis Miguel Azofra
- CIDIA-FEAM (Unidad Asociada al Consejo Superior de Investigaciones Científicas, CSIC, avalada por el Instituto de Ciencia de Materiales de Sevilla, Universidad de Sevilla), Instituto de Estudios Ambientales y Recursos Naturales (i-UNAT), Universidad de Las Palmas de Gran Canaria (ULPGC), Campus de Tafira, 35017 Las Palmas de Gran Canaria, Spain
| | - Jan Sklyaruk
- Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52074 Aachen, Germany
| | - Magnus Rueping
- Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52074 Aachen, Germany
- KAUST Catalysis Center (KCC), KAUST, Thuwal 23955-6900, Saudi Arabia
| |
Collapse
|
27
|
Bartoccini F, Retini M, Piersanti G. C3-Alkylation of indoles and oxindoles by alcohols by means of borrowing hydrogen methodology. Tetrahedron Lett 2020. [DOI: 10.1016/j.tetlet.2020.151875] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
|
28
|
Shaikh MA, Agalave SG, Ubale AS, Gnanaprakasam B. Ligand-Free Ru-Catalyzed Direct sp 3 C-H Alkylation of Fluorene Using Alcohols. J Org Chem 2020; 85:2277-2290. [PMID: 31905282 DOI: 10.1021/acs.joc.9b02913] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
The sp3 C-H alkylation of 9H-fluorene using alcohol and a Ru catalyst via the borrowing hydrogen concept has been described. This reaction was catalyzed by the [Ru(p-cymene)Cl2]2 complex (3 mol %) and exhibited a broad reaction scope with different alcohols, allowing primary and secondary alcohols to be employed as nonhazardous and greener alkylating agents with the formation of environmentally benign water as a byproduct. A variety of 9H-fluorene underwent selective and exclusive mono-C9-alkylation with primary alcohols in good to excellent isolated yield (26 examples, 50-92% yield), whereas this reaction with secondary alcohols in the absence of any external oxidants furnished the tetrasubstituted alkene as the major product. Furthermore, a base-mediated C-H hydroxylation of the synthesized 9H-fluorene derivatives afforded 9H-hydroxy-functionalized quaternary fluorene derivatives in excellent yield.
Collapse
Affiliation(s)
- Moseen A Shaikh
- Department of Chemistry , Indian Institute of Science Education and Research , Pune 411008 , India
| | - Sandip G Agalave
- Department of Chemistry , Indian Institute of Science Education and Research , Pune 411008 , India
| | - Akash S Ubale
- Department of Chemistry , Indian Institute of Science Education and Research , Pune 411008 , India
| | - Boopathy Gnanaprakasam
- Department of Chemistry , Indian Institute of Science Education and Research , Pune 411008 , India
| |
Collapse
|
29
|
Khan I, Sharma A, Kamboj P, Maity B, Tyagi V. Base‐Mediated Reductive Coupling of Indole‐3‐tosylhydrazone with Thiols/Boronic Acids: Facile Synthesis of 3‐(phenylthio)methyl/benzyl Indole Derivatives. ChemistrySelect 2020. [DOI: 10.1002/slct.201903863] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Imran Khan
- School of Chemistry and Biochemistry Thapar Institute of Engineering and Technology, Patiala- 147004 Punjab India
| | - Aanchal Sharma
- School of Chemistry and Biochemistry Thapar Institute of Engineering and Technology, Patiala- 147004 Punjab India
| | - Priya Kamboj
- School of Chemistry and Biochemistry Thapar Institute of Engineering and Technology, Patiala- 147004 Punjab India
| | - Banibrata Maity
- School of Chemistry and Biochemistry Thapar Institute of Engineering and Technology, Patiala- 147004 Punjab India
| | - Vikas Tyagi
- School of Chemistry and Biochemistry Thapar Institute of Engineering and Technology, Patiala- 147004 Punjab India
| |
Collapse
|
30
|
Chanda R, Chakraborty B, Rana G, Jana U. Iron-Catalyzed Functionalization of 3-Benzylideneindoline Through Tandem Csp2
-Csp3
Bond Formation/Isomerization with π-Activated Alcohols. European J Org Chem 2019. [DOI: 10.1002/ejoc.201901181] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Rupsa Chanda
- Department of Chemistry; Jadavpur University; 700032 Kolkata West Bengal India
| | - Baitan Chakraborty
- Department of Chemistry; Jadavpur University; 700032 Kolkata West Bengal India
| | - Gopal Rana
- Department of Chemistry; Jadavpur University; 700032 Kolkata West Bengal India
| | - Umasish Jana
- Department of Chemistry; Jadavpur University; 700032 Kolkata West Bengal India
| |
Collapse
|
31
|
Latham DE, Polidano K, Williams JMJ, Morrill LC. One-Pot Conversion of Allylic Alcohols to α-Methyl Ketones via Iron-Catalyzed Isomerization-Methylation. Org Lett 2019; 21:7914-7918. [PMID: 31536370 PMCID: PMC7007281 DOI: 10.1021/acs.orglett.9b02900] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2019] [Indexed: 11/28/2022]
Abstract
A one-pot iron-catalyzed conversion of allylic alcohols to α-methyl ketones has been developed. This isomerization-methylation strategy utilized a (cyclopentadienone)iron(0) carbonyl complex as precatalyst and methanol as the C1 source. A diverse range of allylic alcohols undergoes isomerization-methylation to form α-methyl ketones in good isolated yields (up to 84% isolated yield).
Collapse
Affiliation(s)
- Daniel E. Latham
- Cardiff Catalysis
Institute, School of Chemistry, Cardiff
University, Main Building,
Park Place, Cardiff, CF10 3AT, U.K.
| | - Kurt Polidano
- Cardiff Catalysis
Institute, School of Chemistry, Cardiff
University, Main Building,
Park Place, Cardiff, CF10 3AT, U.K.
| | | | - Louis C. Morrill
- Cardiff Catalysis
Institute, School of Chemistry, Cardiff
University, Main Building,
Park Place, Cardiff, CF10 3AT, U.K.
| |
Collapse
|
32
|
Polidano K, Williams JMJ, Morrill LC. Iron-Catalyzed Borrowing Hydrogen β- C(sp 3)-Methylation of Alcohols. ACS Catal 2019; 9:8575-8580. [PMID: 32064149 PMCID: PMC7011770 DOI: 10.1021/acscatal.9b02461] [Citation(s) in RCA: 54] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2019] [Revised: 07/30/2019] [Indexed: 12/26/2022]
Abstract
Herein we report the iron-catalyzed β-C(sp3)-methylation of primary alcohols using methanol as a C1 building block. This borrowing hydrogen approach employs a well-defined bench-stable (cyclopentadienone)iron(0) carbonyl complex as precatalyst (5 mol %) and enables a diverse selection of substituted 2-arylethanols to undergo β-C(sp3)-methylation in good isolated yields (24 examples, 65% average yield).
Collapse
Affiliation(s)
- Kurt Polidano
- Cardiff
Catalysis Institute, School of Chemistry,
Cardiff University, Main Building, Park Place, Cardiff, CF10 3AT, U.K.
| | | | - Louis C. Morrill
- Cardiff
Catalysis Institute, School of Chemistry,
Cardiff University, Main Building, Park Place, Cardiff, CF10 3AT, U.K.
| |
Collapse
|
33
|
Bhattacharjee P, Bora U. Molecular Iodine-Catalyzed Selective C-3 Benzylation of Indoles with Benzylic Alcohols: A Greener Approach toward Benzylated Indoles. ACS OMEGA 2019; 4:11770-11776. [PMID: 31460284 PMCID: PMC6682061 DOI: 10.1021/acsomega.9b01481] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/21/2019] [Accepted: 05/29/2019] [Indexed: 05/23/2023]
Abstract
Iodine-catalyzed selective C-3 benzylation of indoles with benzylic alcohols is developed. The reaction proceeds with molecular iodine as the catalyst under ligand-, metal-, and base-free conditions and tolerates wide functionalities. The experimental observations account for the halogen-bond activation mechanistic pathway for the molecular iodine catalysis.
Collapse
|
34
|
Dambatta MB, Polidano K, Northey AD, Williams JMJ, Morrill LC. Iron-Catalyzed Borrowing Hydrogen C-Alkylation of Oxindoles with Alcohols. CHEMSUSCHEM 2019; 12:2345-2349. [PMID: 30958919 PMCID: PMC6619250 DOI: 10.1002/cssc.201900799] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/20/2019] [Revised: 04/08/2019] [Indexed: 05/25/2023]
Abstract
A general and efficient iron-catalyzed C-alkylation of oxindoles has been developed. This borrowing hydrogen approach employing a (cyclopentadienone)iron carbonyl complex (2 mol %) exhibited a broad reaction scope, allowing benzylic and simple primary and secondary aliphatic alcohols to be employed as alkylating agents. A variety of oxindoles underwent selective mono-C3-alkylation in good-to-excellent isolated yields (28 examples, 50-92 % yield, 79 % average yield).
Collapse
Affiliation(s)
- Mubarak B Dambatta
- Cardiff Catalysis Institute, School of Chemistry, Cardiff University, Main Building, Park Place, Cardiff, CF10 3AT, UK
| | - Kurt Polidano
- Cardiff Catalysis Institute, School of Chemistry, Cardiff University, Main Building, Park Place, Cardiff, CF10 3AT, UK
| | - Alexander D Northey
- Cardiff Catalysis Institute, School of Chemistry, Cardiff University, Main Building, Park Place, Cardiff, CF10 3AT, UK
| | | | - Louis C Morrill
- Cardiff Catalysis Institute, School of Chemistry, Cardiff University, Main Building, Park Place, Cardiff, CF10 3AT, UK
| |
Collapse
|
35
|
Kshatriya R, Jejurkar VP, Saha S. Advances in The Catalytic Synthesis of Triarylmethanes (TRAMs). European J Org Chem 2019. [DOI: 10.1002/ejoc.201900465] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Rajpratap Kshatriya
- Department of Dyestuff Technology; Institute of Chemical Technology; 400019 Mumbai, N. P. Marg, Matunga, Mumbai India
| | - Valmik P. Jejurkar
- Department of Dyestuff Technology; Institute of Chemical Technology; 400019 Mumbai, N. P. Marg, Matunga, Mumbai India
| | - Satyajit Saha
- Department of Dyestuff Technology; Institute of Chemical Technology; 400019 Mumbai, N. P. Marg, Matunga, Mumbai India
| |
Collapse
|
36
|
Zhu ZH, Li Y, Wang YB, Lan ZG, Zhu X, Hao XQ, Song MP. α-Alkylation of Nitriles with Alcohols Catalyzed by NNN′ Pincer Ru(II) Complexes Bearing Bipyridyl Imidazoline Ligands. Organometallics 2019. [DOI: 10.1021/acs.organomet.9b00146] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Zhi-Hui Zhu
- College of Chemistry and Molecular Engineering, Zhengzhou University, No 100 of Science Road, Zhengzhou, Henan 450001, P. R. China
| | - Yigao Li
- College of Chemistry and Molecular Engineering, Zhengzhou University, No 100 of Science Road, Zhengzhou, Henan 450001, P. R. China
| | - Yan-Bing Wang
- College of Chemistry and Molecular Engineering, Zhengzhou University, No 100 of Science Road, Zhengzhou, Henan 450001, P. R. China
| | - Zhi-Gang Lan
- College of Chemistry and Molecular Engineering, Zhengzhou University, No 100 of Science Road, Zhengzhou, Henan 450001, P. R. China
| | - Xinju Zhu
- College of Chemistry and Molecular Engineering, Zhengzhou University, No 100 of Science Road, Zhengzhou, Henan 450001, P. R. China
| | - Xin-Qi Hao
- College of Chemistry and Molecular Engineering, Zhengzhou University, No 100 of Science Road, Zhengzhou, Henan 450001, P. R. China
| | - Mao-Ping Song
- College of Chemistry and Molecular Engineering, Zhengzhou University, No 100 of Science Road, Zhengzhou, Henan 450001, P. R. China
| |
Collapse
|
37
|
Muthukumar A, Rao GN, Sekar G. Zn(OTf) 2-catalyzed access to symmetrical and unsymmetrical bisindoles from α-keto amides. Org Biomol Chem 2019; 17:3921-3933. [PMID: 30941387 DOI: 10.1039/c9ob00114j] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Zn(OTf)2-catalyzed synthesis of 3,3'-bisindolyl acetamides from α-keto amides is developed. Both aromatic α-keto amides substituted with electron-donating as well as -withdrawing groups and aliphatic α-keto amides are well tolerated to provide symmetrical bisindoles in moderate to excellent yields. The chemoselective bisindolylation of the keto group of α-keto amides in the presence of a simple keto functionality is successfully achieved in good yields. The transformation is further extended to the synthesis of challenging unsymmetrical bisindoles by treating indolyl α-hydroxy amides with substituted indoles. The unsymmetrical bisindoles are isolated in good to excellent yields.
Collapse
Affiliation(s)
- Alagesan Muthukumar
- Department of Chemistry, Indian Institute of Technology Madras, Chennai, 600 036, India.
| | | | | |
Collapse
|
38
|
Wei D, Netkaew C, Darcel C. Multi-Step Reactions Involving Iron-Catalysed Reduction and Hydrogen Borrowing Reactions. Eur J Inorg Chem 2019. [DOI: 10.1002/ejic.201900122] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Duo Wei
- Univ Rennes; CNRS, ISCR, UMR 6226; 35000 Rennes France
| | | | | |
Collapse
|
39
|
Aegurla B, Peddinti RK. Dehydrative C‐ and S‐Alkylation: Access to Highly Substituted 1‐Sulfonylpropanes. ASIAN J ORG CHEM 2019. [DOI: 10.1002/ajoc.201800587] [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)
- Balakrishna Aegurla
- Department of ChemistryIndian Institute of Technology Roorkee Roorkee- 247 667, Uttarakhand India
| | - Rama Krishna Peddinti
- Department of ChemistryIndian Institute of Technology Roorkee Roorkee- 247 667, Uttarakhand India
| |
Collapse
|
40
|
Hikawa H, Kotaki F, Kikkawa S, Azumaya I. Gold(III)-Catalyzed Decarboxylative C3-Benzylation of Indole-3-carboxylic Acids with Benzylic Alcohols in Water. J Org Chem 2019; 84:1972-1979. [PMID: 30672696 DOI: 10.1021/acs.joc.8b02947] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A strategy for the gold(III)-catalyzed decarboxylative coupling reaction of indole-3-carboxylic acids with benzylic alcohols has been developed. This cascade reaction is devised as a straightforward and efficient synthetic route for 3-benzylindoles in moderate to excellent yields (50-93%). A Hammett study of the protodecarboxylation gives a negative ρ value, suggesting that there is a buildup of positive charge on the indole ring in the transition state. Furthermore, comparison of initial rates in H2O and in D2O reveals an observed kinetic solvent isotope effect (KSIE = 2.7). This simple protocol, which affords the desired products with CO2 and water as the coproducts, can be achieved under mild conditions without the need for base or other additives in water.
Collapse
Affiliation(s)
- Hidemasa Hikawa
- Faculty of Pharmaceutical Sciences , Toho University , 2-2-1, Miyama , Funabashi , Chiba 274-8510 , Japan
| | - Fumiya Kotaki
- Faculty of Pharmaceutical Sciences , Toho University , 2-2-1, Miyama , Funabashi , Chiba 274-8510 , Japan
| | - Shoko Kikkawa
- Faculty of Pharmaceutical Sciences , Toho University , 2-2-1, Miyama , Funabashi , Chiba 274-8510 , Japan
| | - Isao Azumaya
- Faculty of Pharmaceutical Sciences , Toho University , 2-2-1, Miyama , Funabashi , Chiba 274-8510 , Japan
| |
Collapse
|
41
|
Reed-Berendt BG, Polidano K, Morrill LC. Recent advances in homogeneous borrowing hydrogen catalysis using earth-abundant first row transition metals. Org Biomol Chem 2019; 17:1595-1607. [PMID: 30222171 DOI: 10.1039/c8ob01895b] [Citation(s) in RCA: 240] [Impact Index Per Article: 48.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The review highlights the recent advances (2013-present) in the use of earth-abundant first row transition metals in homogeneous borrowing hydrogen catalysis. The utility of catalysts based on Mn, Fe, Co, Ni and Cu to promote a diverse array of important C-C and C-N bond forming reactions is described, including discussion on reaction mechanisms, scope and limitations, and future challenges in this burgeoning area of sustainable catalysis.
Collapse
|
42
|
Hikawa H, Matsuura Y, Kikkawa S, Azumaya I. Platinum( ii)-catalyzed dehydrative C3-benzylation of electron-deficient indoles with benzyl alcohols. Org Chem Front 2019. [DOI: 10.1039/c9qo00831d] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A synthetic strategy for the water-promoted direct dehydrative coupling of indoles with benzyl alcohols catalyzed by PtCl2(PhCN)2 in 1,2-dichloroethane has been developed.
Collapse
Affiliation(s)
- Hidemasa Hikawa
- Faculty of Pharmaceutical Sciences
- Toho University
- Chiba 274-8510
- Japan
| | - Yuuki Matsuura
- Faculty of Pharmaceutical Sciences
- Toho University
- Chiba 274-8510
- Japan
| | - Shoko Kikkawa
- Faculty of Pharmaceutical Sciences
- Toho University
- Chiba 274-8510
- Japan
| | - Isao Azumaya
- Faculty of Pharmaceutical Sciences
- Toho University
- Chiba 274-8510
- Japan
| |
Collapse
|
43
|
Affiliation(s)
- Duo Wei
- Univ Rennes, CNRS, ISCR-UMR 6226, F-35000 Rennes, France
| | | |
Collapse
|
44
|
Seck C, Mbaye MD, Gaillard S, Renaud JL. Bifunctional Iron Complexes Catalyzed Alkylation of Indoles. Adv Synth Catal 2018. [DOI: 10.1002/adsc.201800924] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Charlotte Seck
- Normandie Univ.; LCMT; ENSICAEN; UNICAEN, CNRS; 6 boulevard du Maréchal Juin 14050 Caen France
- Université Assane Seck de Ziguinchor, BP 523, Ziguinchor; Sénégal
| | - Mbaye Diagne Mbaye
- Normandie Univ.; LCMT; ENSICAEN; UNICAEN, CNRS; 6 boulevard du Maréchal Juin 14050 Caen France
- Université Assane Seck de Ziguinchor, BP 523, Ziguinchor; Sénégal
| | - Sylvain Gaillard
- Normandie Univ.; LCMT; ENSICAEN; UNICAEN, CNRS; 6 boulevard du Maréchal Juin 14050 Caen France
| | - Jean-Luc Renaud
- Normandie Univ.; LCMT; ENSICAEN; UNICAEN, CNRS; 6 boulevard du Maréchal Juin 14050 Caen France
| |
Collapse
|
45
|
Hu X, Zhu H, Sang X, Wang D. Design and Synthesis of Zirconium-Containing Coordination Polymer Based on Unsymmetric Indolyl Dicarboxylic Acid and Catalytic Application on Borrowing Hydrogen Reaction. Adv Synth Catal 2018. [DOI: 10.1002/adsc.201800875] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Xinyu Hu
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering; Jiangnan University; Wuxi 214122 Jiangsu Province People's Republic of China
| | - Haiyan Zhu
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering; Jiangnan University; Wuxi 214122 Jiangsu Province People's Republic of China
| | - Xinxin Sang
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering; Jiangnan University; Wuxi 214122 Jiangsu Province People's Republic of China
| | - Dawei Wang
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering; Jiangnan University; Wuxi 214122 Jiangsu Province People's Republic of China
- Key laboratory of inorganic nonmetallic crystalline and energy conversion materials, College of Materials and Chemical Engineering; China Three Gorges University; Yichang, Hubei 443002 People's Republic of China
| |
Collapse
|
46
|
Cai Y, Li F, Li YQ, Zhang WB, Liu FH, Shi SL. Base metal-catalyzed alcohol C–C couplings under hydrogen transfer conditions. Tetrahedron Lett 2018. [DOI: 10.1016/j.tetlet.2018.01.077] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
|
47
|
Das S, Maiti D, De Sarkar S. Synthesis of Polysubstituted Quinolines from α-2-Aminoaryl Alcohols Via Nickel-Catalyzed Dehydrogenative Coupling. J Org Chem 2018; 83:2309-2316. [PMID: 29345932 DOI: 10.1021/acs.joc.7b03198] [Citation(s) in RCA: 88] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Sanju Das
- Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur 741246, West Bengal, India
| | - Debabrata Maiti
- Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur 741246, West Bengal, India
| | - Suman De Sarkar
- Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur 741246, West Bengal, India
| |
Collapse
|
48
|
Di Gregorio G, Mari M, Bartolucci S, Bartoccini F, Piersanti G. Divergent reactions of oxindoles with amino alcohols via the borrowing hydrogen process: oxindole ring opening vs. C3 alkylation. Org Chem Front 2018. [DOI: 10.1039/c8qo00184g] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Oxindoles react with N-acetyl amino alcohols to form tryptamine-derived oxindoles, whereas analogous reactions with N-alkyl amino alcohols lead to lactam formation via a relatively mild borrowing hydrogen process.
Collapse
Affiliation(s)
- Giovanni Di Gregorio
- Department of Biomolecular Sciences
- University of Urbino “Carlo Bo”
- 61029 Urbino
- Italy
| | - Michele Mari
- Department of Biomolecular Sciences
- University of Urbino “Carlo Bo”
- 61029 Urbino
- Italy
| | - Silvia Bartolucci
- Department of Biomolecular Sciences
- University of Urbino “Carlo Bo”
- 61029 Urbino
- Italy
| | - Francesca Bartoccini
- Department of Biomolecular Sciences
- University of Urbino “Carlo Bo”
- 61029 Urbino
- Italy
| | - Giovanni Piersanti
- Department of Biomolecular Sciences
- University of Urbino “Carlo Bo”
- 61029 Urbino
- Italy
| |
Collapse
|