1
|
Deepake SK, Kumar M, Kumar P, DAS UTPAL. α‐Angelica Lactone Catalysed Oxidation of Pyrrolidines to Lactams. European J Org Chem 2022. [DOI: 10.1002/ejoc.202200712] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Siddharth K Deepake
- National Chemical Laboratory CSIR Division of Organic Chemistry 411008 Pune INDIA
| | - Manish Kumar
- National Chemical Laboratory CSIR Division of Organic Chemistry 411008 Pune INDIA
| | - Pawan Kumar
- National Chemical Laboratory CSIR Division of Organic Chemistry 411008 Pune INDIA
| | - UTPAL DAS
- National Chemical Laboratory CSIR Division of Organic Chemistry Pashan Road411008411008 411008 Pune INDIA
| |
Collapse
|
2
|
Guerrero-Corella A, Fraile A, Alemán J. Intramolecular Hydrogen-Bond Activation: Strategies, Benefits, and Influence in Catalysis. ACS ORGANIC & INORGANIC AU 2022; 2:197-204. [PMID: 35673681 PMCID: PMC9164241 DOI: 10.1021/acsorginorgau.1c00053] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/16/2021] [Revised: 01/21/2022] [Accepted: 01/21/2022] [Indexed: 12/12/2022]
Abstract
![]()
The activation of
molecules through intramolecular hydrogen-bond
formation to promote chemical reactions appears as a suitable strategy
in organic synthesis, especially for the preparation of chiral compounds
under metal and organocatalytic conditions. The use of this interaction
has enabled reactivity enhancement of reagents, as well as stabilization
of the chemical species and enantiocontrol of the processes.
Collapse
Affiliation(s)
| | - Alberto Fraile
- Organic Chemistry Department, Módulo 1, Universidad Autónoma de Madrid, 28049 Madrid, Spain.,Institute for Advanced Research in Chemical Sciences (IAdChem), Universidad Autónoma de Madrid, 28049 Madrid, Spain
| | - José Alemán
- Organic Chemistry Department, Módulo 1, Universidad Autónoma de Madrid, 28049 Madrid, Spain.,Institute for Advanced Research in Chemical Sciences (IAdChem), Universidad Autónoma de Madrid, 28049 Madrid, Spain
| |
Collapse
|
3
|
Liu SL, Liu X, Wang Y, Wei D. Unraveling the mechanism and substituent effects on the N-heterocyclic carbene-catalyzed transformation reaction of enals and imines. MOLECULAR CATALYSIS 2022. [DOI: 10.1016/j.mcat.2022.112122] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
|
4
|
Loro C, Molteni L, Papis M, Beccalli EM, Nava D, Presti LL, Brenna S, Colombo G, Foschi F, Broggini G. Direct Synthesis of Fluorescent Oxazolo-phenoxazines by Copper-Catalyzed/Hypervalent Iodine(III)-Mediated Dimerization/Cyclization of 2-Benzylamino-phenols. J Org Chem 2022; 87:1032-1042. [PMID: 35014843 DOI: 10.1021/acs.joc.1c02329] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
A dimerization/cyclization reaction of 2-benzylamino-phenols for the direct synthesis of the oxazolo-phenoxazine skeleton is reported. The reaction occurs under copper catalysis in the presence of hypervalent iodine(III), giving selectively the 5H-oxazolo[4,5-b]phenoxazine compounds. The cascade process, which allows the conversion of the substrates into the tetracyclic products, involves three C-H functionalization steps. Initial oxidation of electron-rich arenes by the hypervalent iodine is essential for the dimerization of substrates, whereas the formation of the five-membered rings is promoted by the copper species. 1-Benzyl-2-phenyl-6-(aryl-benzyl)amino-benzimidazoles are regioselectively obtained using N,N'-dibenzyl-phenylenediamines as starting substrates. The fluorescence emission properties of these classes of products have been evaluated.
Collapse
Affiliation(s)
- Camilla Loro
- Dipartimento di Scienza e Alta Tecnologia, Università dell'Insubria, via Valleggio 11, 22100 Como, Italy
| | - Letizia Molteni
- DISFARM, Sezione di Chimica Generale e Organica "A. Marchesini" Università degli Studi di Milano, via Venezian 21, 20133 Milano, Italy
| | - Marta Papis
- Dipartimento di Scienza e Alta Tecnologia, Università dell'Insubria, via Valleggio 11, 22100 Como, Italy
| | - Egle M Beccalli
- DISFARM, Sezione di Chimica Generale e Organica "A. Marchesini" Università degli Studi di Milano, via Venezian 21, 20133 Milano, Italy
| | - Donatella Nava
- DISFARM, Sezione di Chimica Generale e Organica "A. Marchesini" Università degli Studi di Milano, via Venezian 21, 20133 Milano, Italy
| | - Leonardo Lo Presti
- Dipartimento di Chimica, Università degli Studi di Milano, via Golgi 19, 20133 Milano, Italy
| | - Stefano Brenna
- Dipartimento di Scienza e Alta Tecnologia, Università dell'Insubria, via Valleggio 11, 22100 Como, Italy
| | - Gioele Colombo
- Dipartimento di Scienza e Alta Tecnologia, Università dell'Insubria, via Valleggio 11, 22100 Como, Italy
| | - Francesca Foschi
- Dipartimento di Scienza e Alta Tecnologia, Università dell'Insubria, via Valleggio 11, 22100 Como, Italy
| | - Gianluigi Broggini
- Dipartimento di Scienza e Alta Tecnologia, Università dell'Insubria, via Valleggio 11, 22100 Como, Italy
| |
Collapse
|
5
|
Zhang Y, Zhang Y, Guo J, Han J, Zhou X, Fu Z. Asymmetric synthesis of γ-lactams under low-loading N-heterocyclic carbene catalysis. Org Chem Front 2021. [DOI: 10.1039/d1qo00743b] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Low-loading N-heterocyclic carbene-catalyzed oxidative formal [3 + 2] annulation of enals with N-Ts diethyl aminomalonate has been successfully developed.
Collapse
Affiliation(s)
- Yuxia Zhang
- Key Laboratory of Flexible Electronics & Institute of Advanced Materials, Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing Tech University, 30 South Puzhu Road, Nanjing, 211816, China
| | - Ye Zhang
- Key Laboratory of Flexible Electronics & Institute of Advanced Materials, Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing Tech University, 30 South Puzhu Road, Nanjing, 211816, China
| | - Jingcheng Guo
- Key Laboratory of Flexible Electronics & Institute of Advanced Materials, Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing Tech University, 30 South Puzhu Road, Nanjing, 211816, China
| | - Jinna Han
- Key Laboratory of Flexible Electronics & Institute of Advanced Materials, Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing Tech University, 30 South Puzhu Road, Nanjing, 211816, China
| | - Xiangui Zhou
- Key Laboratory of Flexible Electronics & Institute of Advanced Materials, Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing Tech University, 30 South Puzhu Road, Nanjing, 211816, China
| | - Zhenqian Fu
- Key Laboratory of Flexible Electronics & Institute of Advanced Materials, Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing Tech University, 30 South Puzhu Road, Nanjing, 211816, China
| |
Collapse
|
6
|
Nakashima T, Ohmatsu K, Ooi T. Mannich-type allylic C–H functionalization of enol silyl ethers under photoredox–thiol hybrid catalysis. Org Biomol Chem 2021; 19:141-145. [DOI: 10.1039/d0ob01862g] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
The synergy of an Ir-based photosensitizer with mild oxidizing ability and a thiol catalyst enables efficient allylic C–H functionalization of enol silyl ethers with imines under visible light irradiation.
Collapse
Affiliation(s)
- Tsubasa Nakashima
- Institute of Transformative Bio-Molecules (WPI-ITbM) and Department of Molecular and Macromolecular Chemistry
- Graduate School of Engineering
- Nagoya University
- Chikusa
- Japan
| | - Kohsuke Ohmatsu
- Institute of Transformative Bio-Molecules (WPI-ITbM) and Department of Molecular and Macromolecular Chemistry
- Graduate School of Engineering
- Nagoya University
- Chikusa
- Japan
| | - Takashi Ooi
- Institute of Transformative Bio-Molecules (WPI-ITbM) and Department of Molecular and Macromolecular Chemistry
- Graduate School of Engineering
- Nagoya University
- Chikusa
- Japan
| |
Collapse
|
7
|
Brandolese A, Ragno D, Leonardi C, Di Carmine G, Bortolini O, De Risi C, Massi A. Enantioselective N
-Acylation of Biginelli Dihydropyrimidines by Oxidative NHC Catalysis. European J Org Chem 2020. [DOI: 10.1002/ejoc.202000151] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Arianna Brandolese
- Department of Chemical and Pharmaceutical Sciences; University of Ferrara; Via L. Borsari, 46 44121 Ferrara Italy
| | - Daniele Ragno
- Department of Chemical and Pharmaceutical Sciences; University of Ferrara; Via L. Borsari, 46 44121 Ferrara Italy
| | - Costanza Leonardi
- Department of Chemical and Pharmaceutical Sciences; University of Ferrara; Via L. Borsari, 46 44121 Ferrara Italy
| | - Graziano Di Carmine
- School of Chemical Engineering and Analytical Science; The University of Manchester; M13 9PL Manchester UK
| | - Olga Bortolini
- Department of Chemical and Pharmaceutical Sciences; University of Ferrara; Via L. Borsari, 46 44121 Ferrara Italy
| | - Carmela De Risi
- Department of Chemical and Pharmaceutical Sciences; University of Ferrara; Via L. Borsari, 46 44121 Ferrara Italy
| | - Alessandro Massi
- Department of Chemical and Pharmaceutical Sciences; University of Ferrara; Via L. Borsari, 46 44121 Ferrara Italy
| |
Collapse
|
8
|
Panger JL, Denmark SE. Enantioselective Synthesis of γ-Lactams by Lewis Base Catalyzed Sulfenoamidation of Alkenes. Org Lett 2020; 22:2501-2505. [PMID: 31858805 PMCID: PMC7127933 DOI: 10.1021/acs.orglett.9b04347] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A method for the catalytic, enantioselective, intramolecular 1,2-sulfenoamidation of alkenes is described. Lewis base activation of a suitable sulfur electrophile generates an enantioenriched, thiiranium ion intermediate from a β,γ-unsaturated sulfonyl carboxamide. This intermediate is subsequently intercepted by the sulfonamide nitrogen resulting in cyclization to form γ-lactams. Electron-poor alkenes required the use of a new selenophosphoramidate Lewis base catalyst. Subsequent manipulations of the products harness the latent reactivity of both the amide and thioether functionality.
Collapse
Affiliation(s)
- Jesse L. Panger
- Roger Adams Laboratory, University of Illinois, 600 S. Mathews Ave., Urbana, Illinois 61801
| | - Scott E. Denmark
- Roger Adams Laboratory, University of Illinois, 600 S. Mathews Ave., Urbana, Illinois 61801
| |
Collapse
|
9
|
Zhang ZZ, Zhang Y, Duan HX, Deng ZF, Wang YQ. Enantioselective (3+2) cycloaddition via N-heterocyclic carbene-catalyzed addition of homoenolates to cyclic N-sulfonyl trifluoromethylated ketimines: synthesis of fused N-heterocycle γ-lactams. Chem Commun (Camb) 2020; 56:1553-1556. [PMID: 31930267 DOI: 10.1039/c9cc09269b] [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
An enantioselective (3+2) cycloaddition of enals and cyclic N-sulfonyl trifluoromethyl ketimines via N-heterocyclic carbene-catalyzed homoenolate addition is described. This reaction can efficiently construct fused N-heterocycle γ-lactams bearing two adjacent chiral centers with >20 : 1 dr and 94-99% ee, with one chiral center as a trifluoromethylated α-tetrasubstituted carbon stereocenter.
Collapse
Affiliation(s)
- Zhen-Zhen Zhang
- Henan Key Laboratory of Polyoxometalate Chemistry, Provincial Key Laboratory of Natural Medicine and Immuno-Engineering, and College of Chemistry and Chemical Engineering, Henan University, Kaifeng, Henan 475004, P. R. China.
| | | | | | | | | |
Collapse
|
10
|
Ashida K, Hoshimoto Y, Tohnai N, Scott DE, Ohashi M, Imaizumi H, Tsuchiya Y, Ogoshi S. Enantioselective Synthesis of Polycyclic γ-Lactams with Multiple Chiral Carbon Centers via Ni(0)-Catalyzed Asymmetric Carbonylative Cycloadditions without Stirring. J Am Chem Soc 2019; 142:1594-1602. [DOI: 10.1021/jacs.9b12493] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Keita Ashida
- Department of Applied Chemistry, Faculty of Engineering, Osaka University, Suita, Osaka 565-0871, Japan
| | - Yoichi Hoshimoto
- Department of Applied Chemistry, Faculty of Engineering, Osaka University, Suita, Osaka 565-0871, Japan
| | - Norimitsu Tohnai
- Department of Applied Chemistry, Faculty of Engineering, Osaka University, Suita, Osaka 565-0871, Japan
| | - David E. Scott
- Department of Chemistry, University of Alberta, Edmonton, AB T6G 2G2, Canada
| | - Masato Ohashi
- Department of Chemistry, Graduate School of Science, Osaka Prefecture University, Sakai, Osaka 599-8531, Japan
| | - Hanae Imaizumi
- Institute of Transformative Bio-Molecules (WPI-ITbM), Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8601, Japan
| | - Yuichiro Tsuchiya
- Institute of Transformative Bio-Molecules (WPI-ITbM), Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8601, Japan
| | - Sensuke Ogoshi
- Department of Applied Chemistry, Faculty of Engineering, Osaka University, Suita, Osaka 565-0871, Japan
| |
Collapse
|
11
|
Collar AG, Trujillo C, Lockett-Walters B, Twamley B, Connon SJ. Catalytic Asymmetric γ-Lactam Synthesis from Enolisable Anhydrides and Imines. Chemistry 2019; 25:7275-7279. [PMID: 31050082 DOI: 10.1002/chem.201901028] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2019] [Indexed: 01/18/2023]
Abstract
An anion-binding approach to the problem of preparing enantioenriched γ-lactams from enolisable anhydrides and imines is reported. A simple bisurea catalyst promotes the cycloaddition between α-aryl succinic anhydrides and either PMP- or benzhydryl-protected aldimines to provide γ-lactams with two contiguous stereocentres (one quaternary) with complete diastereocontrol and high to excellent enantioselectivity for the first time. A DFT study has provided insight into the catalyst mode of action and the origins of the observed stereocontrol.
Collapse
Affiliation(s)
- Aarón Gutiérrez Collar
- School of Chemistry Trinity Biomedical Sciences Institute, Trinity College Dublin, 152-160 Pearse Street, Dublin 2, Ireland
| | - Cristina Trujillo
- School of Chemistry Trinity Biomedical Sciences Institute, Trinity College Dublin, 152-160 Pearse Street, Dublin 2, Ireland
| | - Bruce Lockett-Walters
- School of Chemistry Trinity Biomedical Sciences Institute, Trinity College Dublin, 152-160 Pearse Street, Dublin 2, Ireland
| | - Brendan Twamley
- School of Chemistry Trinity Biomedical Sciences Institute, Trinity College Dublin, 152-160 Pearse Street, Dublin 2, Ireland
| | - Stephen J Connon
- School of Chemistry Trinity Biomedical Sciences Institute, Trinity College Dublin, 152-160 Pearse Street, Dublin 2, Ireland
| |
Collapse
|
12
|
Saldívar-González FI, Lenci E, Trabocchi A, Medina-Franco JL. Exploring the chemical space and the bioactivity profile of lactams: a chemoinformatic study. RSC Adv 2019; 9:27105-27116. [PMID: 35528563 PMCID: PMC9070607 DOI: 10.1039/c9ra04841c] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2019] [Accepted: 08/17/2019] [Indexed: 01/04/2023] Open
Abstract
Lactams are a class of compounds important for drug design, due to their great variety of potential therapeutic applications, spanning cancer, diabetes, and infectious diseases. So far, the biological profile and chemical diversity of lactams have not been characterized in a systematic and detailed manner. In this work, we report the chemoinformatic analysis of beta-, gamma-, delta- and epsilon-lactams present in databases of approved drugs, natural products, and bioactive compounds from the large public database ChEMBL. We identified the main biological targets in which the lactams have been evaluated according to their chemical classification. We also identified the most frequent scaffolds and those that can be prioritized in chemical synthesis, since they are scaffolds with potential biological activity but with few reported analogs. Results of the biological and chemoinformatic analysis of lactams indicate that spiro- and bridged-lactams belong to classes with the lowest number of compounds and unique scaffolds, and some showing activity against specific targets. Information obtained from this analysis allows focusing the design of new chemical structures in less explored spaces and with increased possibilities of success. Lactams are a class of compounds important for drug design, due to their great variety of potential therapeutic applications, spanning cancer, diabetes, and infectious diseases.![]()
Collapse
Affiliation(s)
| | - Elena Lenci
- Department of Chemistry “Ugo Schiff”
- University of Florence
- 50019 Sesto Fiorentino
- Italy
| | - Andrea Trabocchi
- Department of Chemistry “Ugo Schiff”
- University of Florence
- 50019 Sesto Fiorentino
- Italy
- Interdepartmental Center for Preclinical Development of Molecular Imaging (CISPIM)
| | - José L. Medina-Franco
- School of Chemistry
- Department of Pharmacy
- Universidad Nacional Autónoma de México
- Mexico City 04510
- Mexico
| |
Collapse
|
13
|
Png ZM, Cabrera-Pardo JR, Peiró Cadahía J, Gaunt MJ. Diastereoselective C-H carbonylative annulation of aliphatic amines: a rapid route to functionalized γ-lactams. Chem Sci 2018; 9:7628-7633. [PMID: 30393523 PMCID: PMC6182607 DOI: 10.1039/c8sc02855a] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2018] [Accepted: 07/20/2018] [Indexed: 11/21/2022] Open
Abstract
A palladium(ii)-catalysed C(sp3)–H carbonylation of free(NH) secondary aliphatic amines to 2-pyrrolidinones is described.
A palladium(ii)-catalysed C(sp3)–H carbonylation of free(NH) secondary aliphatic amines to 2-pyrrolidinones is described. A correlation between the nature of the carboxylate ligand and the diastereoselectivity and yield of the process was observed. As such, under these optimal conditions a range of aliphatic amines were converted to the corresponding trans-4,5-disubstituted 2-pyrrolidines with good d.r. and yield.
Collapse
Affiliation(s)
- Zhuang Mao Png
- Department of Chemistry , University of Cambridge , Lensfield Road , Cambridge , UK .
| | - Jaime R Cabrera-Pardo
- Department of Chemistry , University of Cambridge , Lensfield Road , Cambridge , UK .
| | - Jorge Peiró Cadahía
- Department of Chemistry , University of Cambridge , Lensfield Road , Cambridge , UK .
| | - Matthew J Gaunt
- Department of Chemistry , University of Cambridge , Lensfield Road , Cambridge , UK .
| |
Collapse
|