51
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Gugulothu K, Ramulu Meesa S, Kumar Utkoor U, Rajasekhara Reddy S, Shiva Kumar K. Pd/C and TFA‐promoted One‐pot, Two‐step Cascade Reaction: An Effective Synthesis of Oxepines. ASIAN J ORG CHEM 2021. [DOI: 10.1002/ajoc.202100449] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Kishan Gugulothu
- Department of Chemistry Osmania University Hyderabad 500 007 India
| | | | | | - Sabbasani Rajasekhara Reddy
- Department of Chemistry School of Advanced Sciences Vellore Institute of Technology (VIT) Vellore 632014 India
| | - K. Shiva Kumar
- Department of Chemistry Osmania University Hyderabad 500 007 India
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52
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Photoredox-catalyzed multicomponent Petasis reaction in batch and continuous flow with alkyl boronic acids. iScience 2021; 24:103134. [PMID: 34632333 PMCID: PMC8487034 DOI: 10.1016/j.isci.2021.103134] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2021] [Revised: 08/12/2021] [Accepted: 09/13/2021] [Indexed: 11/24/2022] Open
Abstract
Multicomponent reactions (MCRs) are ideal platforms for the generation of a wide variety of organic scaffolds in a convergent and atom-economical manner. Many strategies for the generation of highly substituted and diverse structures have been developed and among these, the Petasis reaction represents a viable reaction manifold for the synthesis of substituted amines via coupling of an amine, an aldehyde and a boronic acid (BA). Despite its synthetic utility, the inherent drawbacks associated with the traditional two-electron Petasis reaction have stimulated continuous research towards more facile and tolerant methodologies. In this regard, we present the use of free alkyl BAs as effective radical precursors in this MCR through a single-electron transfer mechanism under mild reaction conditions. We have further demonstrated its applicability to photo-flow reactors, facilitating the reaction scale-up for the rapid assembly of complex molecular structures. Multicomponent photocatalyzed Petasis reaction Boronic acids as alkyl radical precursors under mild reaction conditions Photo-flow chemistry application for Petasis reaction
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53
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Amiri Z, Bayat M. Synthesis of acenaphtho[1',2':4,5]pyrrolo[2,3-d]pyrimidine derivatives via one-pot three-component reaction. MONATSHEFTE FUR CHEMIE 2021. [DOI: 10.1007/s00706-021-02836-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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54
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Du X, Zhao H, Li X, Zhang L, Dong Y, Wang P, Zhang D, Liu Q, Liu H. Ligand-Regulated Palladium-Catalyzed Regiodivergent Hydroarylation of the Distal Double Bond of Allenamides with Aryl Boronic Acid. J Org Chem 2021; 86:13276-13288. [PMID: 34541854 DOI: 10.1021/acs.joc.1c01303] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
The ligand-regulated regiodivergent hydroarylation of the distal double bond of allenamides with aryl boronic acid was achieved in the presence of palladium(II) catalysts, delivering a variety of functionalized enamide with excellent E selectivity and Markovnikov/anti-Markovnikov selectivity. Two possible coordination intermediates were proposed to be responsible for the regiodivergent hydroarylation: (1) The coordination Intermediate I, which was proposed to be formed through the coordination of MeCN, distal double bond, phenyl to palladium, led to the aryl group away from the Intermediate I, inducing excellent E selectivity and anti-Markovnikov selectivity. (2) A switch of regioselectivity to 1,2-Markovnikov hydroarylation was obtained using bidentate phosphine ligand (dppf or Xantphos). The formed coordination Intermediate II led to the N-tether away from the Intermediate II and at the trans position of aryl, resulting in excellent E selectivity and Markovnikov selectivity. Meanwhile, tentative investigation on the mechanism proved that the hydron source of this hydroarylation is more likely to be boronic acid. The transmetallation between aryl boronic acid and palladium catalyst was the initial step of this transformation.
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Affiliation(s)
- Xin Du
- School of Chemistry and Chemical Engineering, Shandong University of Technology, 266 West Xincun Road, Zibo 255049, People's Republic of China
| | - Huan Zhao
- School of Chemistry and Chemical Engineering, Shandong University of Technology, 266 West Xincun Road, Zibo 255049, People's Republic of China
| | - Xinling Li
- School of Chemistry and Chemical Engineering, Shandong University of Technology, 266 West Xincun Road, Zibo 255049, People's Republic of China
| | - Lizhi Zhang
- School of Chemistry and Chemical Engineering, Shandong University of Technology, 266 West Xincun Road, Zibo 255049, People's Republic of China
| | - Yunhui Dong
- School of Chemistry and Chemical Engineering, Shandong University of Technology, 266 West Xincun Road, Zibo 255049, People's Republic of China
| | - Ping Wang
- School of Chemistry and Chemical Engineering, Shandong University of Technology, 266 West Xincun Road, Zibo 255049, People's Republic of China
| | - Daopeng Zhang
- School of Chemistry and Chemical Engineering, Shandong University of Technology, 266 West Xincun Road, Zibo 255049, People's Republic of China
| | - Qing Liu
- School of Chemistry and Chemical Engineering, Shandong University of Technology, 266 West Xincun Road, Zibo 255049, People's Republic of China
| | - Hui Liu
- School of Chemistry and Chemical Engineering, Shandong University of Technology, 266 West Xincun Road, Zibo 255049, People's Republic of China
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55
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Annibaletto J, Martzel T, Levacher V, Oudeyer S, Brière J. Multicomponent Catalytic Enantioselective Synthesis of Isoxazolidin‐5‐Ones. Adv Synth Catal 2021. [DOI: 10.1002/adsc.202100719] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
| | - Thomas Martzel
- Normandie Univ UNIROUEN, INSA Rouen, CNRS, COBRA 76000 Rouen France
| | - Vincent Levacher
- Normandie Univ UNIROUEN, INSA Rouen, CNRS, COBRA 76000 Rouen France
| | - Sylvain Oudeyer
- Normandie Univ UNIROUEN, INSA Rouen, CNRS, COBRA 76000 Rouen France
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56
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Herraiz AG, Cramer N. Cobalt(III)-Catalyzed Diastereo- and Enantioselective Three-Component C–H Functionalization. ACS Catal 2021. [DOI: 10.1021/acscatal.1c03153] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Ana G. Herraiz
- Laboratory of Asymmetric Catalysis and Synthesis, Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale Lausanne (EPFL), 1015 Lausanne, Switzerland
| | - Nicolai Cramer
- Laboratory of Asymmetric Catalysis and Synthesis, Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale Lausanne (EPFL), 1015 Lausanne, Switzerland
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57
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Nikoofar K, Yielzoleh FM. High-component reactions (HCRs): An overview of MCRs containing seven or more components as versatile tools in organic synthesis. Curr Org Synth 2021; 19:115-147. [PMID: 34515008 DOI: 10.2174/1570179418666210910111208] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2021] [Revised: 06/28/2021] [Accepted: 07/07/2021] [Indexed: 11/22/2022]
Abstract
Recently, multi-component reactions (MCRs) have gained special attention due to their versatility for the synthesis of polycyclic heterocycles. Moreover, their applicability can become more widespread as they can be combined together as a union of MCRs. In this overview, the authors have tried to collect the MCRs containing more than seven components that can lead to effectual heterocycles in organic and/or pharmaceutical chemistry. The review contains papers published up to the end of 2020. The subject is classified based on the number of substrates, such as seven-, eight-, nine-, ten-, and more components. The authors expect their report to be helpful for researchers to clarify their route to significant MCRs.
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Affiliation(s)
- Kobra Nikoofar
- Department of Chemistry, Faculty of Physics and Chemistry, Alzahra University, Tehran. Iran
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58
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Kiledal SA, Jourdain R, Vellalath S, Romo D. Multicomponent Enantioselective Synthesis of Tetrahydropyridazinones Employing Chiral α,β-Unsaturated Acylammonium Salts. Org Lett 2021; 23:6622-6627. [PMID: 34436913 DOI: 10.1021/acs.orglett.1c02044] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
An enantioselective three-component reaction was developed for the synthesis of tetrahydropyridazinones employing chiral α,β-unsaturated acylammonium salts, malonates, and azodicarboxylates. An initial α-amination of a malonate with an azodicarboxylate and a subsequent chiral Lewis-base-catalyzed Michael/proton transfer/lactamization process delivered optically active tetrahydropyridazinones (up to 99:1 er). Subsequent transformations of these adducts were explored, revealing some unexpected rearrangements, and the use of an allyl methyl malonate enabled a subsequent deallylative decarboxylation and the introduction of a second stereocenter.
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Affiliation(s)
- Sigrid A Kiledal
- Department of Chemistry & Biochemistry, Baylor University, Waco, Texas 76706, United States
| | - Roxane Jourdain
- Department of Chemistry & Biochemistry, Baylor University, Waco, Texas 76706, United States
| | - Sreekumar Vellalath
- Department of Chemistry & Biochemistry, Baylor University, Waco, Texas 76706, United States
| | - Daniel Romo
- Department of Chemistry & Biochemistry, Baylor University, Waco, Texas 76706, United States
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59
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Pellissier H. Organocatalytic total synthesis of bioactive compounds based on one-pot methodologies. PHYSICAL SCIENCES REVIEWS 2021. [DOI: 10.1515/psr-2021-0025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
The combination of one-pot methodologies to asymmetric organocatalysis allow a green and direct access to many types of complex highly functionalized chiral products, including important key intermediates in total syntheses of important bioactive compounds. A series of chiral organocatalysts have already been successfully applied to such syntheses. This report collects major developments in the total synthesis of biologically active products based on the use of enantioselective organocatalytic domino/tandem reactions as key steps. It is divided into two parts dealing successively with reactions based on the use of proline-derived catalysts and other organocatalysts.
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Affiliation(s)
- Hélène Pellissier
- Aix Marseille Univ, CNRS, Centrale Marseille, iSm2 , Marseille , France
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60
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Mackey P, Turlik A, Ando K, Light ME, Houk KN, McGlacken GP. Stereoselective Installation of Five Contiguous Stereogenic Centers in a Double Aldol-Tishchenko Cascade and Evaluation of the Key Transition State through DFT Calculation. Org Lett 2021; 23:6372-6376. [PMID: 34374288 PMCID: PMC8383304 DOI: 10.1021/acs.orglett.1c02179] [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
![]()
The stereoselective formation of
5 contiguous chiral centers in
a single pot reaction is demonstrated using an aldol, aldol–Tishchenko
reaction of N-tert-butyl sulfinimines.
One diastereoisomer (from 32 possibilities) predominates, and a series
of cyclic and acyclic 3-amino-1,5-diol derivatives are synthesized
in good yields (up to 80%) and excellent diastereoselectivities (up
to >98:2 dr). Investigations support two reversible aldol steps,
and
multiple intermediates which are funnelled through a remarkably selective,
irreversible, Tishchenko reduction, in a Curtin–Hammett phenomenon.
DFT calculations using a disolvated (THF) model reveal the factors
controlling stereoselectivity in the final irreversible Tishchenko
step.
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Affiliation(s)
- Pamela Mackey
- School of Chemistry and Analytical and Biological Chemistry Research Facility, University College Cork, Cork, Ireland
| | - Aneta Turlik
- Department of Chemistry and Biochemistry, University of California, Los Angeles, California 90095-1569, United States
| | - Kaori Ando
- Department of Chemistry and Biomolecular Science, Faculty of Engineering, Gifu University, Yanagido 1-1, Gifu 501-1193, Japan
| | - Mark E Light
- University of Southampton, Chemistry Department, University Road, Southampton SO17 1BJ, United Kingdom
| | - K N Houk
- Department of Chemistry and Biochemistry, University of California, Los Angeles, California 90095-1569, United States
| | - Gerard P McGlacken
- School of Chemistry and Analytical and Biological Chemistry Research Facility, University College Cork, Cork, Ireland
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61
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Xu M, Kooij B, Wang T, Lin JH, Qu ZW, Grimme S, Stephan DW. Facile Synthesis of Cyanide and Isocyanides from CO. Angew Chem Int Ed Engl 2021; 60:16965-16969. [PMID: 34004079 DOI: 10.1002/anie.202105909] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2021] [Indexed: 11/09/2022]
Abstract
The reaction of K[N(SiMe3 )2 ] with 13 CO proceeds in C6 D6 or THF affording K13 CN and O(SiMe3 )2 under mild conditions as confirmed by crystallographic characterization of K(18-crown-6)CN. Similarly reaction of the alkali metal amides, M[N(SiR3 )R'] (M=Li, K; R=Ph, Me; R'=alkyl, aryl) provides the corresponding 13 C labeled isocyanide RN13 C and MOSiR3 , generally in high yields. In some instances, the use of the sterically bulky Ph3 Si-substituent is required to preclude 1,2-silyl migration affording the silylcarbamoyl salt M[Me3 SiC(O)NR']. These reactions have been used to obtain 19 examples of 13 C labelled isocyanides, and several examples of gram scale reactions are reported. The mechanism of the reactions is probed via reliable DFT calculations.
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Affiliation(s)
- Maotong Xu
- Department of Chemistry, University of Toronto, 80 St. George St., Toronto, Ontario, M5S3H6, Canada
| | - Bastiaan Kooij
- Department of Chemistry, University of Toronto, 80 St. George St., Toronto, Ontario, M5S3H6, Canada.,Van't Hoff Institute for Molecular Sciences, University of Amsterdam, 1090 GD, Amsterdam, The Netherlands
| | - Tongtong Wang
- Department of Chemistry, University of Toronto, 80 St. George St., Toronto, Ontario, M5S3H6, Canada.,School of Chemistry, Faculty of Chemical, Environmental and Biological Science and Technology, Dalian University of Technology, Dalian, 116023, China
| | - Jack H Lin
- Department of Chemistry, University of Toronto, 80 St. George St., Toronto, Ontario, M5S3H6, Canada
| | - Zheng-Wang Qu
- Mulliken Center for Theoretical Chemistry, Institut für Physikalische und Theoretische Chemie, Rheinische Friedrich-Wilhelms-Universität Bonn, Beringstrasse 4, 53115, Bonn, Germany
| | - Stefan Grimme
- Mulliken Center for Theoretical Chemistry, Institut für Physikalische und Theoretische Chemie, Rheinische Friedrich-Wilhelms-Universität Bonn, Beringstrasse 4, 53115, Bonn, Germany
| | - Douglas W Stephan
- Department of Chemistry, University of Toronto, 80 St. George St., Toronto, Ontario, M5S3H6, Canada
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62
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Madhavachary R, Mallik R, Ramachary DB. Organocatalytic Enantiospecific Total Synthesis of Butenolides. Molecules 2021; 26:molecules26144320. [PMID: 34299595 PMCID: PMC8306825 DOI: 10.3390/molecules26144320] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2021] [Revised: 07/08/2021] [Accepted: 07/14/2021] [Indexed: 11/16/2022] Open
Abstract
Biologically important, chiral natural products of butenolides, (−)-blastmycinolactol, (+)-blastmycinone, (−)-NFX-2, (+)-antimycinone, lipid metabolites, (+)-ancepsenolide, (+)-homoancepsenolide, mosquito larvicidal butenolide and their analogues were synthesized in very good yields in a sequential one-pot manner by using an organocatalytic reductive coupling and palladium-mediated reductive deoxygenation or organocatalytic reductive coupling and silica-mediated reductive deamination as the key steps.
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63
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Indalkar K, Malge SS, Mali AS, Chaturbhuj GU. Expeditious and Highly Efficient One-Pot Synthesis of Functionalized Imidazoles Catalyzed by Sulfated Polyborate. ORG PREP PROCED INT 2021. [DOI: 10.1080/00304948.2021.1920304] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Krishna Indalkar
- Department of Pharmaceutical Sciences and Technology, Institute of Chemical Technology, Matunga, Mumbai, India
| | - Sanjay S. Malge
- Department of Pharmaceutical Sciences and Technology, Institute of Chemical Technology, Matunga, Mumbai, India
| | - Anil S. Mali
- Department of Pharmaceutical Sciences and Technology, Institute of Chemical Technology, Matunga, Mumbai, India
| | - Ganesh U. Chaturbhuj
- Department of Pharmaceutical Sciences and Technology, Institute of Chemical Technology, Matunga, Mumbai, India
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64
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65
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Bettoni L, Joly N, Lohier J, Gaillard S, Poater A, Renaud J. Ruthenium‐Catalyzed Three‐Component Alkylation: A Tandem Approach to the Synthesis of Nonsymmetric
N,N‐
Dialkyl Acyl Hydrazides with Alcohols. Adv Synth Catal 2021. [DOI: 10.1002/adsc.202100554] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Léo Bettoni
- Normandie Univ. LCMT, ENSICAEN, UNICAEN, CNRS 6 boulevard du Maréchal Juin 14000 Caen France
| | - Nicolas Joly
- Normandie Univ. LCMT, ENSICAEN, UNICAEN, CNRS 6 boulevard du Maréchal Juin 14000 Caen France
- Departament de Química, Institut de Química Computacional i Catàlisi (IQCC) University of Girona c/ Mª Aurèlia Capmany 69 17003 Girona Catalonia Spain
| | - Jean‐François Lohier
- Normandie Univ. LCMT, ENSICAEN, UNICAEN, CNRS 6 boulevard du Maréchal Juin 14000 Caen France
| | - Sylvain Gaillard
- Normandie Univ. LCMT, ENSICAEN, UNICAEN, CNRS 6 boulevard du Maréchal Juin 14000 Caen France
| | - Albert Poater
- Departament de Química, Institut de Química Computacional i Catàlisi (IQCC) University of Girona c/ Mª Aurèlia Capmany 69 17003 Girona Catalonia Spain
| | - Jean‐Luc Renaud
- Normandie Univ. LCMT, ENSICAEN, UNICAEN, CNRS 6 boulevard du Maréchal Juin 14000 Caen France
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66
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Xu M, Kooij B, Wang T, Lin JH, Qu Z, Grimme S, Stephan DW. Facile Synthesis of Cyanide and Isocyanides from CO. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202105909] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Maotong Xu
- Department of Chemistry University of Toronto 80 St. George St. Toronto Ontario M5S3H6 Canada
| | - Bastiaan Kooij
- Department of Chemistry University of Toronto 80 St. George St. Toronto Ontario M5S3H6 Canada
- Van't Hoff Institute for Molecular Sciences University of Amsterdam 1090 GD Amsterdam The Netherlands
| | - Tongtong Wang
- Department of Chemistry University of Toronto 80 St. George St. Toronto Ontario M5S3H6 Canada
- School of Chemistry Faculty of Chemical Environmental and Biological Science and Technology Dalian University of Technology Dalian 116023 China
| | - Jack H. Lin
- Department of Chemistry University of Toronto 80 St. George St. Toronto Ontario M5S3H6 Canada
| | - Zheng‐Wang Qu
- Mulliken Center for Theoretical Chemistry Institut für Physikalische und Theoretische Chemie Rheinische Friedrich-Wilhelms-Universität Bonn Beringstrasse 4 53115 Bonn Germany
| | - Stefan Grimme
- Mulliken Center for Theoretical Chemistry Institut für Physikalische und Theoretische Chemie Rheinische Friedrich-Wilhelms-Universität Bonn Beringstrasse 4 53115 Bonn Germany
| | - Douglas W. Stephan
- Department of Chemistry University of Toronto 80 St. George St. Toronto Ontario M5S3H6 Canada
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67
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Qi J, Wei F, Tung CH, Xu Z. Modular Synthesis of α-Quaternary Chiral β-Lactams by a Synergistic Copper/Palladium-Catalyzed Multicomponent Reaction. Angew Chem Int Ed Engl 2021; 60:13814-13818. [PMID: 33817889 DOI: 10.1002/anie.202100601] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2021] [Revised: 04/01/2021] [Indexed: 01/14/2023]
Abstract
An asymmetric multicomponent, interrupted Kinugasa allylic alkylation (IKAA) reaction has been developed with a synergistic Cu-catalyzed Kinugasa system and a Pd-catalyzed allylic alkylation reaction. This unprecedented reaction provides in high yields and with high stereoselectivity a synthesis of α-quaternary chiral β-lactams, which cannot be produced with existing synthetic methods. Stereoselective coupling of two catalytic amounts of transient organometallic intermediates formed in situ is an important feature of this reaction.
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Affiliation(s)
- Jialin Qi
- Department of Chemistry, Shandong University, No. 27 South Shanda Road, Jinan, 250100, China
| | - Fang Wei
- Department of Chemistry, Shandong University, No. 27 South Shanda Road, Jinan, 250100, China
| | - Chen-Ho Tung
- Department of Chemistry, Shandong University, No. 27 South Shanda Road, Jinan, 250100, China
| | - Zhenghu Xu
- Department of Chemistry, Shandong University, No. 27 South Shanda Road, Jinan, 250100, China.,State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai, 200032, China
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68
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Qi J, Wei F, Tung C, Xu Z. Modular Synthesis of α‐Quaternary Chiral β‐Lactams by a Synergistic Copper/Palladium‐Catalyzed Multicomponent Reaction. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202100601] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Jialin Qi
- Department of Chemistry Shandong University No. 27 South Shanda Road Jinan 250100 China
| | - Fang Wei
- Department of Chemistry Shandong University No. 27 South Shanda Road Jinan 250100 China
| | - Chen‐Ho Tung
- Department of Chemistry Shandong University No. 27 South Shanda Road Jinan 250100 China
| | - Zhenghu Xu
- Department of Chemistry Shandong University No. 27 South Shanda Road Jinan 250100 China
- State Key Laboratory of Organometallic Chemistry Shanghai Institute of Organic Chemistry Chinese Academy of Sciences Shanghai 200032 China
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69
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Shaik B, Seelam M, Tamminana R, Kammela PR. Iodine-Mediated Multi-Component Reactions: Readily Access to Tetrazoles and Guanidines. LETT ORG CHEM 2021. [DOI: 10.2174/1570178617999200728212116] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Environmentally benign syntheses of One-pot sequential reactions of benzoyl chloride with
amines followed by the treatment of molecular I2 reagent under basic conditions provide benzoyl
tetrazoles and guanidines in moderate to excellent yields. This one-pot synthesis has several
advantages such as mild reaction conditions, short reaction time, convenient workup, high yields, using
cheap and readily available reagent molecular Iodine. In addition, functional group tolerance has been
explored.
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Affiliation(s)
- Bajivali Shaik
- Department of Chemistry, Gudlavalleru Engineering College (Autonomous), Gudlavalleru-521 356, India
| | - Mohan Seelam
- Department of Chemistry, Bapatla Engineering College (Autonomous), Bapatla-522 10, India
| | - Ramana Tamminana
- Department of Chemistry, GITAM University, Bengaluru Campus, NH-207, Doddaballapur Taluk, Bengaluru Rural District, Karnataka-561203, India
| | - Prasad Rao Kammela
- Department of Chemistry, Bapatla Engineering College (Autonomous), Bapatla-522 10, India
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70
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Chen L, Liu X, Zhang J, Duan L, Wen Z, Ni H. Relay Cu(I)/Brønsted Base Catalysis for
Phospha
‐Michael Addition/5‐
exo
‐
dig
Cyclization/Isomerization of
in
situ
Formed
aza
‐Alkynyl
o‐
quinone methides with P(O)−H compounds to C3‐Phosphorylated Indoles. Adv Synth Catal 2021. [DOI: 10.1002/adsc.202100275] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Long Chen
- Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province Sichuan Industrial Institute of Antibiotics School of Pharmacy Chengdu University 2025 Chengluo Avenue Chengdu 610016 People's Republic of China
| | - Xiao‐Yan Liu
- Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province Sichuan Industrial Institute of Antibiotics School of Pharmacy Chengdu University 2025 Chengluo Avenue Chengdu 610016 People's Republic of China
| | - Jing Zhang
- Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province Sichuan Industrial Institute of Antibiotics School of Pharmacy Chengdu University 2025 Chengluo Avenue Chengdu 610016 People's Republic of China
| | - Li Duan
- Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province Sichuan Industrial Institute of Antibiotics School of Pharmacy Chengdu University 2025 Chengluo Avenue Chengdu 610016 People's Republic of China
| | - Zhong Wen
- Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province Sichuan Industrial Institute of Antibiotics School of Pharmacy Chengdu University 2025 Chengluo Avenue Chengdu 610016 People's Republic of China
| | - Hai‐Liang Ni
- College of Chemistry and Materials Science Sichuan Normal University 5 Jing An Road Chengdu 610066 People's Republic of China
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71
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Abstract
This review collects for the first time enantioselective one-pot processes promoted
by green chiral zinc catalysts. It illustrates how much these cheap, non-toxic and environmentally
benign catalysts allow unprecedented asymmetric domino and tandem reactions of many
types to be achieved, allowing direct access to a wide variety of very complex chiral molecules.
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Affiliation(s)
- Hélène Pellissier
- Aix-Marseille University, CNRS, Centrale Marseille, iSm2, Marseille, France
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72
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Li X, Zeng H, Lin L, Feng X. Catalytic Asymmetric Hydroacyloxylation/Ring-Opening Reaction of Ynamides, Acids, and Aziridines. Org Lett 2021; 23:2954-2958. [PMID: 33769054 DOI: 10.1021/acs.orglett.1c00631] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
A highly enantioselective three-component reaction of ynamides with carboxylic acids and 2,2'-diester aziridines has been realized by using a chiral N,N'-dioxide/Ho(OTf)3 complex as a Lewis acid catalyst. The process includes the formation of an α-acyloxyenamide intermediate through the addition of carboxylic acids to ynamides and the following enantioselective nucleophilic addition to in-situ-generated azomethine ylides induced by the chiral catalyst. A range of amino acyloxyenamides are delivered in moderate to good yields with good ee values. In addition, a possible catalytic cycle with a transition model is proposed to elucidate the reaction mechanism.
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Affiliation(s)
- Xiangqiang Li
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, China
| | - Hongkun Zeng
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, China
| | - Lili Lin
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, China
| | - Xiaoming Feng
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, China
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73
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Sharma A, Dutta D, Gogoi P. A palladium-catalyzed cascade process for spirooxindole: an alternative way for the synthesis of spiro(indoline-3,2'-quinazolin)-2-ones. Org Biomol Chem 2021; 19:1795-1806. [PMID: 33559666 DOI: 10.1039/d0ob02580a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A palladium-catalyzed cascade strategy has been developed for one-pot synthesis of functionalized spiro(indoline-3,2'-quinazolin)-2-one derivatives from readily available starting materials. The reaction proceeds via C-C and two C-N bond formations in a single reaction operation. This method offers an attractive pathway for the synthesis of a broad range of spiro(indoline-3,2'-quinazolin)-2-ones in good yields.
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Affiliation(s)
- Abhilash Sharma
- Applied Organic Chemistry Group, Chemical Science and Technology Division, CSIR-North East Institute of Science and Technology, Jorhat 785006, Assam, India. and Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Dhiraj Dutta
- Applied Organic Chemistry Group, Chemical Science and Technology Division, CSIR-North East Institute of Science and Technology, Jorhat 785006, Assam, India. and Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Pranjal Gogoi
- Applied Organic Chemistry Group, Chemical Science and Technology Division, CSIR-North East Institute of Science and Technology, Jorhat 785006, Assam, India. and Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
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74
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Allahi A, Akhlaghinia B. WEB (water extract of banana): An efficient natural base for one-pot multi-component synthesis of 2-amino-3,5-dicarbonitrile-6-thio-pyridines. PHOSPHORUS SULFUR 2021. [DOI: 10.1080/10426507.2020.1835905] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Alireza Allahi
- Department of Chemistry, Faculty of Science, Ferdowsi University of Mashhad, Mashhad, Iran
| | - Batool Akhlaghinia
- Department of Chemistry, Faculty of Science, Ferdowsi University of Mashhad, Mashhad, Iran
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75
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Shamna S, Afsina CMA, Philip RM, Anilkumar G. Recent advances and prospects in the Zn-catalysed Mannich reaction. RSC Adv 2021; 11:9098-9111. [PMID: 35423453 PMCID: PMC8695403 DOI: 10.1039/d0ra10772g] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2020] [Accepted: 02/15/2021] [Indexed: 12/27/2022] Open
Abstract
Zn-catalysed reactions are ubiquitously important due to their inexpensive, generally less toxic and atom-economic nature. According to the modern criteria of sustainability, their use in a catalytic manner is a highly desirable goal, especially when using chiral ligands. Considering the relevance of well-established zinc-mediated C-C bond formation reactions, it is relatively surprising that the use of Zn as a catalyst is still underdeveloped, especially in comparison with other transition metals. The vast majority of natural molecules, including proteins, nucleic acids and most biologically active compounds, contain nitrogen. Consequently, developing new synthetic methods for the construction of nitrogenous molecules receives great attention from organic chemists. The Mannich reaction is a very basic and very useful platform for the development of several such nitrogen-containing molecules. In this review, we summarise the recent advancements in the Zn-catalysed Mannich reaction, covering the literature from 2011 to 2020.
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Affiliation(s)
- Salahudeen Shamna
- School of Chemical Sciences, Mahatma Gandhi University Priyadarsini Hills Kottayam Kerala 686560 India +91-481-273-1036
| | - C M A Afsina
- School of Chemical Sciences, Mahatma Gandhi University Priyadarsini Hills Kottayam Kerala 686560 India +91-481-273-1036
| | - Rose Mary Philip
- School of Chemical Sciences, Mahatma Gandhi University Priyadarsini Hills Kottayam Kerala 686560 India +91-481-273-1036
| | - Gopinathan Anilkumar
- School of Chemical Sciences, Mahatma Gandhi University Priyadarsini Hills Kottayam Kerala 686560 India +91-481-273-1036
- Advanced Molecular Materials Research Centre (AMMRC), Mahatma Gandhi University Priyadarsini Hills P O Kottayam Kerala 686560 India
- Institute for Integrated Programmes and Research in Basic Sciences (IIRBS), Mahatma Gandhi University Priyadarsini Hills P O Kottayam Kerala 686560 India
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76
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Wang C, Lai Z, Xie H, Cui S. Triazenyl Alkynes as Versatile Building Blocks in Multicomponent Reactions: Diastereoselective Synthesis of β‐Amino Amides. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202014686] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Chaorong Wang
- Institute of Drug Discovery and Design College of Pharmaceutical Sciences Zhejiang University 866 Yuhangtang Road, Hangzhou 310058 Zhejiang Province China
| | - Zhencheng Lai
- Institute of Drug Discovery and Design College of Pharmaceutical Sciences Zhejiang University 866 Yuhangtang Road, Hangzhou 310058 Zhejiang Province China
| | - Hujun Xie
- School of Food Science and Biotechnology Zhejiang Gongshang University 18 Xuezheng Street, Xiasha Higher Education Campus, Hangzhou 310018 Zhejiang Province China
| | - Sunliang Cui
- Institute of Drug Discovery and Design College of Pharmaceutical Sciences Zhejiang University 866 Yuhangtang Road, Hangzhou 310058 Zhejiang Province China
- Key Laboratory of Synthetic Chemistry of Natural Substances Shanghai Institute of Organic Chemistry Chinese Academy of Sciences China
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77
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Stereoselective organocascades: from fundamentals to recent developments. PHYSICAL SCIENCES REVIEWS 2021. [DOI: 10.1515/psr-2018-0096] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
Reaction sequences where more bonds are sequentially formed (cascade reactions) may be started either by a stoichiometric or by a catalytic reagent, and proceed in an enantio- diastereo- or non-stereo- selective manner. A wide variety of such strategies has been developed, including both stoichiometric and catalytic ones.
Within the widely developed cascade reactions field, this chapter is not meant to be omni-comprehensive, but to offer an as much as possible complete overview on organocatalytic stereoselective methods. We embrace the more general definitions by Tietze and Denmark, considering as cascade reactions all those one-pot processes that involve two or more bond formations, where each subsequent step is enabled by a structural change caused by the previous one. We will include both two- and multi-component reactions where one or more organocatalysts may be responsible either for all or just some of the occurring transformations. Organocascades will be reported according to the number of involved catalytic cycles.
In the following paragraphs, only cascade reactions that are stereoselective by means of a chiral catalyst will be considered. It will be shown that multiple possibilities, relying on different catalysis modes, are available to achieve the same reaction sequence.
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78
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Yang G, Liang J, Hu X, Liu M, Zhang X, Wei Y. Recent Advances on Fabrication of Polymeric Composites Based on Multicomponent Reactions for Bioimaging and Environmental Pollutant Removal. Macromol Rapid Commun 2021; 42:e2000563. [PMID: 33543565 DOI: 10.1002/marc.202000563] [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: 09/28/2020] [Revised: 11/08/2020] [Indexed: 12/30/2022]
Abstract
As the core of polymer chemistry, manufacture of functional polymers is one of research hotspots over the past several decades. Various polymers are developed for diverse applications due to their tunable structures and unique properties. However, traditional step-by-step preparation strategies inevitably involve some problems, such as separation, purification, and time-consuming. The multicomponent reactions (MCRs) are emerging as environmentally benign synthetic strategies to construct multifunctional polymers or composites with pendant groups and designed structures because of their features, such as efficient, fast, green, and atom economy. This mini review summarizes the latest advances about fabrication of multifunctional fluorescent polymers or adsorptive polymeric composites through different MCRs, including Kabachnik-Fields reaction, Biginelli reaction, mercaptoacetic acid locking imine reaction, Debus-Radziszewski reaction, and Mannich reaction. The potential applications of these polymeric composites in biomedical and environmental remediation are also highlighted. It is expected that this mini-review will promote the development preparation and applications of functional polymers through MCRs.
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Affiliation(s)
- Guang Yang
- Department of Chemistry, Nanchang University, 999 Xuefu Avenue, Nanchang, 330031, China
| | - Jie Liang
- Department of Chemistry, Nanchang University, 999 Xuefu Avenue, Nanchang, 330031, China
| | - Xin Hu
- Department of Chemistry, Nanchang University, 999 Xuefu Avenue, Nanchang, 330031, China
| | - Meiying Liu
- Department of Chemistry, Nanchang University, 999 Xuefu Avenue, Nanchang, 330031, China.,Key Laboratory of Modern Preparation of TCM, Ministry of Education, Jiangxi University of Traditional Chinese Medicine, Nanchang, 330004, China
| | - Xiaoyong Zhang
- Department of Chemistry, Nanchang University, 999 Xuefu Avenue, Nanchang, 330031, China
| | - Yen Wei
- Department of Chemistry and the Tsinghua Center for Frontier Polymer Research, Tsinghua University, Beijing, 100084, P. R. China
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79
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Rodrigues MO, Eberlin MN, Neto BAD. How and Why to Investigate Multicomponent Reactions Mechanisms? A Critical Review. CHEM REC 2021; 21:2762-2781. [PMID: 33538117 DOI: 10.1002/tcr.202000165] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2020] [Revised: 01/04/2021] [Indexed: 01/03/2023]
Abstract
We review the most innovative efforts and greatest challenges faced when elucidating multicomponent reactions (MCRs) mechanisms. When compared to traditional reactions, the often two or more concurrent reactions pathways and the greater number of possible intermediates in MCRs turn their mechanistic investigation both a harder and trickier task. The common approaches used to investigate reaction mechanisms are often unable to clarify MCRs mechanisms; hence few but clever approaches are currently used to determine these mechanisms and to depict their key transformations. Their complexity has required most innovative approaches and the use of a number of unique techniques that have shed light over the favored pathway selected from the myriad of alternatives theoretically available for MCRs. This review focuses on the most successful efforts applied by a few leading groups to perform these puzzlingly investigations.
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Affiliation(s)
- Marcelo O Rodrigues
- Laboratory of Medicinal and Technological Chemistry, University of Brasília, Chemistry Institute (IQ-UnB), Campus Universitário Darcy Ribeiro, Brasília, Distrito Federal, 70904-970, Brazil.,School of Physics and Astronomy, Nottingham University, NG72RD, Nottingham, U.K
| | - Marcos N Eberlin
- MackMass Laboratory, PPGENM, School of Engineering, Mackenzie Presbyterian University, São Paulo, SP, 01302-907, Brazil
| | - Brenno A D Neto
- Laboratory of Medicinal and Technological Chemistry, University of Brasília, Chemistry Institute (IQ-UnB), Campus Universitário Darcy Ribeiro, Brasília, Distrito Federal, 70904-970, Brazil
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80
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Wang C, Lai Z, Xie H, Cui S. Triazenyl Alkynes as Versatile Building Blocks in Multicomponent Reactions: Diastereoselective Synthesis of β-Amino Amides. Angew Chem Int Ed Engl 2021; 60:5147-5151. [PMID: 33289272 DOI: 10.1002/anie.202014686] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2020] [Revised: 12/02/2020] [Indexed: 12/31/2022]
Abstract
Multicomponent reactions (MCRs) are powerful tool for the construction of polyfunctional molecules in an operationally simple and atom-economic manner, and the discovery of novel MCRs requests various building blocks. Herein, triazenyl alkynes were disclosed as versatile building blocks in a multicomponent reaction with carboxylic acids, aldehydes and anilines to furnish β-amino amides with the achievement of high diastereoselectivity and structural diversity. In this process, triazenyl alkynes were bifunctional so that the alkyne moiety acts as C2 fragment and triazene serves as directing group to modulate the transition state thus achieving high diastereoselectivity, in consistence with DFT calculations. Furthermore, the triazenyl group also enables diverse late-stage transformation. This protocol opens a new vision for the discovery of building block and rational design of MCRs.
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Affiliation(s)
- Chaorong Wang
- Institute of Drug Discovery and Design, College of Pharmaceutical Sciences, Zhejiang University, 866 Yuhangtang Road, Hangzhou, 310058, Zhejiang Province, China
| | - Zhencheng Lai
- Institute of Drug Discovery and Design, College of Pharmaceutical Sciences, Zhejiang University, 866 Yuhangtang Road, Hangzhou, 310058, Zhejiang Province, China
| | - Hujun Xie
- School of Food Science and Biotechnology, Zhejiang Gongshang University, 18 Xuezheng Street, Xiasha Higher Education Campus, Hangzhou, 310018, Zhejiang Province, China
| | - Sunliang Cui
- Institute of Drug Discovery and Design, College of Pharmaceutical Sciences, Zhejiang University, 866 Yuhangtang Road, Hangzhou, 310058, Zhejiang Province, China.,Key Laboratory of Synthetic Chemistry of Natural Substances, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, China
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81
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Rashdan HR, Shehadi IA, Abdelmonsef AH. Synthesis, Anticancer Evaluation, Computer-Aided Docking Studies, and ADMET Prediction of 1,2,3-Triazolyl-Pyridine Hybrids as Human Aurora B Kinase Inhibitors. ACS OMEGA 2021; 6:1445-1455. [PMID: 33490804 PMCID: PMC7818638 DOI: 10.1021/acsomega.0c05116] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/20/2020] [Accepted: 12/23/2020] [Indexed: 06/01/2023]
Abstract
A novel series of 1,2,3-triazolyl-pyridine hybrids were prepared through the reaction of the triazole derivative (1) with the appropriate aldehyde (2a-g) and malononitrile or ethyl cyanoacetate in the presence of ammonium acetate in refluxed acetic acid. The chemical composition of the products was established on the basis of spectral and elemental analyses. Aurora B kinase is a protein with diverse biological actions in controlling tumorigenesis by inhibiting apoptosis and promoting proliferation and metastasis, making it an emerging target for diseases such as hepatocellular carcinoma (HCC). Alteration in the target protein expression causes unequal distribution of genetic information, causing HCC. The new compounds were tested for their antihepatic cancer activity, and some of them had strong efficacy against human hepatoblastoma (HepG2) cell lines.
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Affiliation(s)
- Huda R.M. Rashdan
- Chemistry
of Natural and Microbial Products Department, Pharmaceutical and Drug
Industries Research Division, National Research
Centre, Dokki, Cairo 12622, Egypt
| | - Ihsan A. Shehadi
- Chemistry
Department, Faculty of Science, University
of Sharjah, Sharjah 27272, UAE
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82
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Choudhare TS, Wagare DS, Kadam VT, Kharpe AA, Netankar PD. Rapid One-Pot Multicomponent Dioxane-HCl Complex Catalyzed Solvent-Free Synthesis of 3,4-Dihydropyrimidine-2-One Derivatives. Polycycl Aromat Compd 2021. [DOI: 10.1080/10406638.2021.1873808] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
| | - Devendra S. Wagare
- Department of Chemistry, Vivekanand Arts Sardar Dalipsing Commerce and Science College, Aurangabad, India
| | - Vijay T. Kadam
- Department of Chemistry, Maulana Azad College, Aurangabad, India
| | - Ajit A. Kharpe
- Department of Chemistry, Maulana Azad College, Aurangabad, India
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83
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Kanti Das K, Manna S, Panda S. Transition metal catalyzed asymmetric multicomponent reactions of unsaturated compounds using organoboron reagents. Chem Commun (Camb) 2021; 57:441-459. [PMID: 33350405 DOI: 10.1039/d0cc06460b] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Asymmetric multicomponent reactions allow stitching several functional groups in an enantioselective and atom economical manner. The introduction of boron-based reagents as a multicomponent coupling partner has its own merits. In addition to being non-toxic and highly stable, organoboron compounds can be easily converted to other functional groups in a stereoselective manner. In the last decade several transition metal catalyzed asymmetric multicomponent strategies have been evolved using boron based reagents. This review will discuss the merits and scope of multicomponent strategies based on their difference in the reaction mechanism and transition metals involved.
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Affiliation(s)
- Kanak Kanti Das
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur 721302, India.
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84
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Khan I, Ibrar A, Zaib S. Alkynoates as Versatile and Powerful Chemical Tools for the Rapid Assembly of Diverse Heterocycles under Transition-Metal Catalysis: Recent Developments and Challenges. Top Curr Chem (Cham) 2021; 379:3. [PMID: 33398642 DOI: 10.1007/s41061-020-00316-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2020] [Accepted: 11/16/2020] [Indexed: 12/15/2022]
Abstract
Heterocycles, heteroaromatics and spirocyclic entities are ubiquitous components of a wide plethora of synthetic drugs, biologically active natural products, marketed pharmaceuticals and agrochemical targets. Recognizing their high proportion in drugs and rich pharmacological potential, these invaluable structural motifs have garnered significant interest, thus enabling the development of efficient catalytic methodologies providing access to architecturally complex and diverse molecules with high atom-economy and low cost. These chemical processes not only allow the formation of diverse heterocycles but also utilize a range of flexible and easily accessible building units in a single operation to discover diversity-oriented synthetic approaches. Alkynoates are significantly important, diverse and powerful building blocks in organic chemistry due to their unique and inherent properties such as the electronic bias on carbon-carbon triple bonds posed by electron-withdrawing groups or the metallic coordination site provided by carbonyl groups. The present review highlights the comprehensive picture of the utility of alkynoates (2007-2019) for the synthesis of various heterocycles (> 50 types) using transition-metal catalysts (Ru, Rh, Pd, Ir, Ag, Au, Pt, Cu, Mn, Fe) in various forms. The valuable function of versatile alkynoates (bearing multifunctional groups) as simple and useful starting materials is explored, thus cyclizing with an array of coupling partners to deliver a broad range of oxygen-, nitrogen-, sulfur-containing heterocycles alongside fused-, and spiro-heterocyclic compounds. In addition, these examples will also focus the scope and reaction limitations, as well as mechanistic investigations into the synthesis of these heterocycles. The biological significance will also be discussed, citing relevant examples of drug molecules highlighting each class of heterocycles. This review summarizes the recent developments in the synthetic methods for the synthesis of various heterocycles using alkynoates as readily available starting materials under transition-metal catalysis.
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Affiliation(s)
- Imtiaz Khan
- Department of Chemistry, School of Natural Sciences, The University of Manchester, Oxford Road, Manchester, M13 9PL, UK.
- Manchester Institute of Biotechnology, The University of Manchester, 131 Princess Street, Manchester, M1 7DN, UK.
| | - Aliya Ibrar
- Department of Chemistry, Faculty of Natural Sciences, The University of Haripur, Haripur, KPK-22620, Pakistan
| | - Sumera Zaib
- Department of Biochemistry, Faculty of Life Sciences, University of Central Punjab, Lahore, 54590, Pakistan
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85
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Marsicano V, Arcadi A, Chiarini M, Fabrizi G, Goggiamani A, Iazzetti A. Sequential condensation/biannulation reactions of β-(2-aminophenyl)-α,β-ynones with 1,3-dicarbonyls. Org Biomol Chem 2021; 19:5177-5190. [PMID: 34042150 DOI: 10.1039/d1ob00795e] [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
A divergent domino condensation/biannulation reaction of β-(2-aminophenyl) α,β-ynones with 1,3-dicarbonyls to construct a polycyclic 4H-pyrano[3,4-c]quinoline core has been developed. The p-TsOH·H2O catalyzed reaction of β-(2-aminophenyl) α,β-ynones with β-ketoesters in ethanol proceeds with good to excellent yields to provide a simple and effective method for the synthesis of functionalized 4H-pyrano[3,4-c]quinolinones. Further elaboration of these latter derivatives with an excess of 20% NH4OH in EtOH at 50 °C helps achieve the synthesis of the perlodinine analogues benzo[c][2,7]naphthyridin-4(3H)-one derivatives in high yields. Moreover, the p-TsOH·H2O mediated reaction of β-(2-aminophenyl) α,β-ynones with β-di-ketones leads to the formation of a variety of structurally diverse 4H-pyrano[3,4-c]quinoline polycyclic ketals by the incorporation of an alcohol solvent molecule in a cascade fashion.
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Affiliation(s)
- Vincenzo Marsicano
- Dipartimento di Scienze Fisiche e Chimiche, Università di L'Aquila, Via Vetoio- 67010 Coppito (AQ), Italy.
| | - Antonio Arcadi
- Dipartimento di Scienze Fisiche e Chimiche, Università di L'Aquila, Via Vetoio- 67010 Coppito (AQ), Italy.
| | - Marco Chiarini
- Facoltà di Bioscienze e Tecnologie Agro-alimentari e Ambientali, Università di Teramo, Via R. Balzarini 1, 64100 - Teramo (Te), Italy
| | - Giancarlo Fabrizi
- Dipartimento di Chimica e Tecnologie del Farmaco, Sapienza, Università di Roma, P.le A. Moro 5, 00185 Rome, Italy
| | - Antonella Goggiamani
- Dipartimento di Chimica e Tecnologie del Farmaco, Sapienza, Università di Roma, P.le A. Moro 5, 00185 Rome, Italy
| | - Antonia Iazzetti
- Dipartimento di Chimica e Tecnologie del Farmaco, Sapienza, Università di Roma, P.le A. Moro 5, 00185 Rome, Italy
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86
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Wang J, Li D, Li J, Zhu Q. Advances in palladium-catalysed imidoylative cyclization of functionalized isocyanides for the construction of N-heterocycles. Org Biomol Chem 2021; 19:6730-6745. [PMID: 34259697 DOI: 10.1039/d1ob00864a] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Palladium-catalysed isocyanide insertion reactions have witnessed great progress in recent years. In particular, imidoylative cyclization of functionalized isocyanides was successfully developed by taking advantage of the adjustable substituents on the isocyano group, opening a new avenue to access a variety of nitrogen-containing heterocycles. In this review article, we summarize the advances of functionalized isocyanide insertion reactions and highlight the breakthroughs of enantioselective palladium catalysed imidoylation reactions by using this strategy. Additionally, copper-catalysed cyclization reactions of functionalized isocyanides are briefly discussed.
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Affiliation(s)
- Jian Wang
- Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based Materials, College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241000, P. R. China.
| | - Dan Li
- Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based Materials, College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241000, P. R. China.
| | - Jing Li
- State Key Laboratory of Respiratory Disease, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou 510530, China and University of Chinese Academy of Sciences, Beijing 100049, China and Bioland Laboratory (Guangzhou Regenerative Medicine and Health Guangdong Laboratory), Guangzhou 510005, China.
| | - Qiang Zhu
- State Key Laboratory of Respiratory Disease, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou 510530, China and University of Chinese Academy of Sciences, Beijing 100049, China and Bioland Laboratory (Guangzhou Regenerative Medicine and Health Guangdong Laboratory), Guangzhou 510005, China.
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87
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Li SS, Qin Q, Qi Z, Yang LM, Kang Y, Zhang XZ, Ma AJ, Peng JB. Synthesis of disubstituted γ-butyrolactones and spirocyclopropanes via a multicomponent reaction of aldehydes, Meldrum's acid and sulfoxonium ylides. Org Chem Front 2021. [DOI: 10.1039/d1qo00303h] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
An efficient synthesis of disubstituted γ-butyrolactones and spirocyclopropanes via multicomponent reaction of aldehydes, Meldrum's acid and sulfoxonium ylides has been developed.
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Affiliation(s)
- Shan-Shan Li
- School of Biotechnology and Health Sciences
- Wuyi University
- Jiangmen
- People's Republic of China
| | - Qi Qin
- School of Biotechnology and Health Sciences
- Wuyi University
- Jiangmen
- People's Republic of China
| | - Zhuang Qi
- School of Biotechnology and Health Sciences
- Wuyi University
- Jiangmen
- People's Republic of China
| | - Li-Miao Yang
- School of Biotechnology and Health Sciences
- Wuyi University
- Jiangmen
- People's Republic of China
| | - Yun Kang
- School of Biotechnology and Health Sciences
- Wuyi University
- Jiangmen
- People's Republic of China
| | - Xiang-Zhi Zhang
- School of Biotechnology and Health Sciences
- Wuyi University
- Jiangmen
- People's Republic of China
| | - Ai-Jun Ma
- School of Biotechnology and Health Sciences
- Wuyi University
- Jiangmen
- People's Republic of China
| | - Jin-Bao Peng
- School of Biotechnology and Health Sciences
- Wuyi University
- Jiangmen
- People's Republic of China
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88
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Liu H, Lin ML, Chen YJ, Huang YH, Dong L. Rh( iii)-Catalyzed one-pot three-component cyclization reaction: rapid selective synthesis of monohydroxy polycyclic BINOL derivatives. Org Chem Front 2021. [DOI: 10.1039/d1qo00779c] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A Rh(iii)-catalyzed three-component C–H bond functionalization protocol has been successfully applied to access complex polycyclic BINOL derivatives in which the formation of intermediate amides occurred in situ from aldehydes and amines.
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Affiliation(s)
- Hao Liu
- Key Laboratory of Drug Targeting and Drug Delivery System of Ministry of Education, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
| | - Meng-Ling Lin
- Key Laboratory of Drug Targeting and Drug Delivery System of Ministry of Education, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
| | - Yin-Jun Chen
- Key Laboratory of Drug Targeting and Drug Delivery System of Ministry of Education, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
| | - Yin-Hui Huang
- Key Laboratory of Drug Targeting and Drug Delivery System of Ministry of Education, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
| | - Lin Dong
- Key Laboratory of Drug Targeting and Drug Delivery System of Ministry of Education, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
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89
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Wang Y, Cobo AA, Franz AK. Recent advances in organocatalytic asymmetric multicomponent cascade reactions for enantioselective synthesis of spirooxindoles. Org Chem Front 2021. [DOI: 10.1039/d1qo00220a] [Citation(s) in RCA: 47] [Impact Index Per Article: 15.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Catalytic asymmetric MCCRs for enantioselective synthesis of spirooxindoles by using chiral phosphoric acids, amines, bifunctional thiourea/squaramides and metal-based reagents as catalysts.
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Affiliation(s)
- Yongchao Wang
- Colleage of Vocational and Technical Education
- Yunnan Normal University
- Kunming 650092
- P. R. China
| | - Angel A. Cobo
- Department of Chemistry
- University of California
- Davis
- USA
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90
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Brandão P, Marques C, Pinto E, Pineiro M, Burke AJ. Petasis adducts of tryptanthrin – synthesis, biological activity evaluation and druglikeness assessment. NEW J CHEM 2021. [DOI: 10.1039/d1nj02079j] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The first example of a tryptanthrin-based Petasis multicomponent reaction is reported, with one of the new derivatives showing moderate fungicidal activity.
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Affiliation(s)
- Pedro Brandão
- Department of Chemistry
- University of Coimbra
- CQC
- Coimbra
- Portugal
| | | | - Eugénia Pinto
- Laboratório de Microbiologia
- Departamento de Ciências Biológicas
- Faculdade de Farmácia
- Universidade do Porto
- 4050-313 Porto
| | - Marta Pineiro
- Department of Chemistry
- University of Coimbra
- CQC
- Coimbra
- Portugal
| | - Anthony J. Burke
- LAQV-REQUIMTE
- University of Évora
- Évora
- Portugal
- Department of Chemistry
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91
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Zhang XL, Feng KX, Hu JL, Shen QY, Huang WS, Xia AB, Li C, Xu DQ. One-pot asymmetric synthesis of a hexahydrophenanthridine scaffold containing five stereocenters via an organocatalytic quadruple-cascade reaction. NEW J CHEM 2021. [DOI: 10.1039/d0nj03946b] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
An organocatalytic enantioselective aza-Michael-Michael-Michael/aldol cyclization quadruple-cascade reaction of 2-amino-β-nitrostyrenes and α,β-unsaturated aldehydes has been developed for the construction of fully substituted hexahydrophenanthridine.
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Affiliation(s)
- Xiao-Long Zhang
- State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology
- Key Laboratory of Green Pesticides and Cleaner Production Technology of Zhejiang Province
- Zhejiang University of Technology
- Hangzhou 310014
- P. R. China
| | - Kai-Xiang Feng
- State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology
- Key Laboratory of Green Pesticides and Cleaner Production Technology of Zhejiang Province
- Zhejiang University of Technology
- Hangzhou 310014
- P. R. China
| | - Jian-Liang Hu
- Hangzhou Grascent Co., Ltd
- Meicheng Town 311604
- P. R. China
| | - Qiao-Yu Shen
- State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology
- Key Laboratory of Green Pesticides and Cleaner Production Technology of Zhejiang Province
- Zhejiang University of Technology
- Hangzhou 310014
- P. R. China
| | | | - Ai-Bao Xia
- State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology
- Key Laboratory of Green Pesticides and Cleaner Production Technology of Zhejiang Province
- Zhejiang University of Technology
- Hangzhou 310014
- P. R. China
| | - Chen Li
- State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology
- Key Laboratory of Green Pesticides and Cleaner Production Technology of Zhejiang Province
- Zhejiang University of Technology
- Hangzhou 310014
- P. R. China
| | - Dan-Qian Xu
- State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology
- Key Laboratory of Green Pesticides and Cleaner Production Technology of Zhejiang Province
- Zhejiang University of Technology
- Hangzhou 310014
- P. R. China
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92
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Nazeri MT, Beygzade Nowee A, Shaabani A. A new one-pot synthesis of pseudopeptide connected to sulfonamide via the tandem N-sulfonylation/Ugi reactions. NEW J CHEM 2021. [DOI: 10.1039/d0nj05878e] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
In this study, an efficient one-pot reaction is reported for the synthesis of a new class of pseudopeptide connected to sulfonamide via a tandem N-sulfonylation/Ugi four-component reaction (Ugi-4CR) strategy under mild conditions in high yields.
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Affiliation(s)
| | | | - Ahmad Shaabani
- Faculty of Chemistry
- Shahid Beheshti University
- G.C
- Tehran
- Iran
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93
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Varlet T, Masson G. Enamides and dienamides in phosphoric acid-catalysed enantioselective cycloadditions for the synthesis of chiral amines. Chem Commun (Camb) 2021; 57:4089-4105. [DOI: 10.1039/d1cc00590a] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
This feature article describes how enamides and dienamides can participate in chiral phosphoric acid catalyzed enantioselective cycloadditions to prepare a wide range of cyclic amines.
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Affiliation(s)
- Thomas Varlet
- Université Paris-Saclay
- Institut de Chimie des Substances Naturelles
- ICSN-CNRS UPR 2301
- 91198 Gif-sur-Yvette
- France
| | - Géraldine Masson
- Université Paris-Saclay
- Institut de Chimie des Substances Naturelles
- ICSN-CNRS UPR 2301
- 91198 Gif-sur-Yvette
- France
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94
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He J, Yu Y, Guo P, Liu X, Zhu B, Cao H. Palladium‐Catalyzed C‐N Bond Formation: A Straightforward Alkoxymethylation Process for the Synthesis of the C1 and C3‐Dialkoxy Indoles. ChemistrySelect 2020. [DOI: 10.1002/slct.202004226] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Jiaming He
- School of Chemistry and Chemical Engineering Guangdong Pharmaceutical University Zhongshan 528458 P.R. of China
| | - Yue Yu
- School of Chemistry and Chemical Engineering Guangdong Pharmaceutical University Zhongshan 528458 P.R. of China
| | - Pengfeng Guo
- School of Chemistry and Chemical Engineering Guangdong Pharmaceutical University Zhongshan 528458 P.R. of China
| | - Xiang Liu
- School of Chemistry and Chemical Engineering Guangdong Pharmaceutical University Zhongshan 528458 P.R. of China
| | - Baofu Zhu
- School of Chemistry and Chemical Engineering Guangdong Pharmaceutical University Zhongshan 528458 P.R. of China
| | - Hua Cao
- School of Chemistry and Chemical Engineering Guangdong Pharmaceutical University Zhongshan 528458 P.R. of China
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95
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Chu Y, Bi S, Wu X, Jiang Y, Liu Y, Ling B, Yuan XA. Mechanism, bonding nature of metal-nitrenoid, and selectivity for a nitrene-participating three-component carboamination of dienes: A DFT study. MOLECULAR CATALYSIS 2020. [DOI: 10.1016/j.mcat.2020.111222] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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96
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Cankařová N, Krchňák V. Isocyanide Multicomponent Reactions on Solid Phase: State of the Art and Future Application. Int J Mol Sci 2020; 21:E9160. [PMID: 33271974 PMCID: PMC7729642 DOI: 10.3390/ijms21239160] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2020] [Revised: 11/27/2020] [Accepted: 11/28/2020] [Indexed: 01/17/2023] Open
Abstract
Drug discovery efforts largely depend on access to structural diversity. Multicomponent reactions allow for time-efficient chemical transformations and provide advanced intermediates with three or four points of diversification for further expansion to a structural variety of organic molecules. This review is aimed at solid-phase syntheses of small molecules involving isocyanide-based multicomponent reactions. The majority of all reported syntheses employ the Ugi four-component reaction. The review also covers the Passerini and Groebke-Blackburn-Bienaymé reactions. To date, the main advantages of the solid-phase approach are the ability to prepare chemical libraries intended for biological screening and elimination of the isocyanide odor. However, the potential of multicomponent reactions has not been fully exploited. The unexplored avenues of these reactions, including chiral frameworks, DNA-encoded libraries, eco-friendly synthesis, and chiral auxiliary reactions, are briefly outlined.
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Affiliation(s)
- Naděžda Cankařová
- Department of Organic Chemistry, Faculty of Science, Palacký University, 17. listopadu 12, 779 00 Olomouc, Czech Republic;
| | - Viktor Krchňák
- Department of Organic Chemistry, Faculty of Science, Palacký University, 17. listopadu 12, 779 00 Olomouc, Czech Republic;
- Department of Chemistry and Biochemistry, 251 Nieuwland Science Center, University of Notre Dame, Notre Dame, IN 46556, USA
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97
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Farooq S, Alharthi FA, Alsalme A, Hussain A, Dar BA, Hamid A, Koul S. Dihydropyrimidinones: efficient one-pot green synthesis using Montmorillonite-KSF and evaluation of their cytotoxic activity. RSC Adv 2020; 10:42221-42234. [PMID: 35516739 PMCID: PMC9057999 DOI: 10.1039/d0ra09072g] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2020] [Accepted: 11/13/2020] [Indexed: 01/31/2023] Open
Abstract
A simple, efficient, cost-effective, recyclable and green approach has been developed for the synthesis of new dihydropyrimidinone analogs via the Biginelli reaction. The methodology involves a multicomponent reaction catalyzed by “HPA-Montmorillonite-KSF” as a reusable and heterogeneous catalyst. This method gives an efficient and much improved modification of the original Biginelli reaction, in terms of yield and short reaction times under solvent free conditions. All the derivatives were subjected to cytotoxicity screening against a panel of four different human cancer cell lines viz. colon (Colo-205), prostate (PC-3), leukemia (THP-1) and lung (A549) to check their effect on percentage growth. MTT [3-(4,5-dimethylthiazol-yl)-diphenyl tetrazoliumbromide] cytotoxicity assay was employed to check IC50 values. Of the synthesized analogs, 16a showed the best activity with IC50 of 7.1 ± 0.8, 13.1 ± 1.4, 13.8 ± 0.9 and 14.7 ± 1.1 μM against lung (A549), leukemia (THP-1), prostate (PC-3) and colon (Colo-205) cancer lines, respectively. The 16a analog was further checked for its effect on cancer cell properties through clonogenic (colony formation) and scratch motility (wound healing) assays and thereby was found that it reduced both the colony formation and migratory properties of the lung cancer cell line (A549). Further, molecular docking studies were performed with 16a to show its binding mode. The general method for the preparation of DHPM analogs; cytotoxic activity and binding mode of the most active derivative against PI3Kγ and CDK2 targets.![]()
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Affiliation(s)
- Saleem Farooq
- Department of Higher Education, Department of Chemistry, Government Degree College for Boys Baramulla 193101 J&K India +91-1952-234214 +91-1952-234214.,Bioorganic Chemistry Division, CSIR-Indian Institute of Integrative Medicine Canal Road Jammu 180001 J&K India
| | - Fahad A Alharthi
- Department of Chemistry, College of Science, King Saud University P.O. Box 2455 Riyadh 11451 Saudi Arabia
| | - Ali Alsalme
- Department of Chemistry, College of Science, King Saud University P.O. Box 2455 Riyadh 11451 Saudi Arabia
| | - Aashiq Hussain
- Cancer Pharmacology Division, CSIR-Indian Institute of Integrative Medicine Canal Road Jammu 180001 J&K India
| | - Bashir A Dar
- Department of Higher Education, Department of Chemistry, Govt. Degree College Sopore Baramulla 193201 J&K India
| | - Abid Hamid
- Cancer Pharmacology Division, CSIR-Indian Institute of Integrative Medicine Canal Road Jammu 180001 J&K India.,Department of Biotechnology, Central University of Kashmir Ganderbal 191201 J&K India
| | - S Koul
- Bioorganic Chemistry Division, CSIR-Indian Institute of Integrative Medicine Canal Road Jammu 180001 J&K India
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98
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Liu X, Liu Y, Chen L. Tandem Annulations of Propargylic Alcohols to Indole Derivatives. Adv Synth Catal 2020. [DOI: 10.1002/adsc.202000930] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Xiao‐Yan Liu
- Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province Sichuan Industrial Institute of Antibiotics Chengdu University 168 Hua Guan Road Chengdu 610052 People's Republic of China
| | - Yun‐Lin Liu
- School of Chemistry and Chemical Engineering Guangzhou University 230 Wai Huan Xi Road Guangzhou 510006 People's Republic of China
| | - Long Chen
- Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province Sichuan Industrial Institute of Antibiotics Chengdu University 168 Hua Guan Road Chengdu 610052 People's Republic of China
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99
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Pei JP, Lv XJ, Peng CJ, Liu YK. Asymmetric organocatalytic multicomponent reactions for efficient construction of bicyclic compounds bearing bisacetal and isoxazolidine moieties. Chem Commun (Camb) 2020; 56:12765-12768. [PMID: 32966389 DOI: 10.1039/d0cc05099g] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An organocatalytic multicomponent reaction of N-protected hydroxylamines, acrylaldehyde and acetal-containing enones was developed. Bisacetal-containing bicyclic isoxazolidine derivatives bearing four continuous stereocenters were formed with excellent stereoselectivities. A plausible reaction pathway was proposed based on 18O-labeling control experiments.
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Affiliation(s)
- Jun-Ping Pei
- Key Laboratory of Marine Drugs, Chinese Ministry of Education, School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, China.
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100
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Kargar PG, Bagherzade G, Eshghi H. Novel biocompatible core/shell Fe 3O 4@NFC@Co(ii) as a new catalyst in a multicomponent reaction: an efficient and sustainable methodology and novel reusable material for one-pot synthesis of 4 H-pyran and pyranopyrazole in aqueous media. RSC Adv 2020; 10:37086-37097. [PMID: 35521285 PMCID: PMC9057109 DOI: 10.1039/d0ra04698a] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2020] [Accepted: 07/13/2020] [Indexed: 12/17/2022] Open
Abstract
Today, due to the developing need for inexpensive catalysts, recyclable magnetic nanocatalysts immobilized on polysaccharides possess many advantages over classical heterogeneous catalysts. However, cellulose has been an appealing material in catalysis science and technology. In this work, by controlling the interaction between the inorganic complexes and the support material, we designed a high activity nanostructured combination of a magnetic nanoparticle Fe3O4@NFC@Co(ii) terminated complex as a multi-nuclear catalyst. This protocol involves an environment friendly approach using cobalt acetate. The magnetic nanostructure Fe3O4@NFC@Co(ii) can be used as a novel, green, and a powerful catalyst that demonstrates a short reaction time, high yield and easy procedure for the cascade Knoevenagel-Michael-cyclocondensation reaction for the one-pot synthesis of 4H-pyrans and pyranopyrazoles. The superparamagnetic nanocomposite could be conveniently separated by using an external magnet. Moreover, the catalyst could be reused at least five times in new reaction runs without a noticeable loss of activity. The prepared catalyst was characterized by FT-IR, XRD, VSM, FESEM, EDAX, TEM, ICP, and TGA techniques. The experiments were achieved with good yields and implied that the catalytic method was effective and convenient for heterocyclic synthesis.
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Affiliation(s)
- Pouya Ghamari Kargar
- Department of Chemistry, Faculty of Sciences, University of Birjand Birjand 97175-615 Iran +98 56 32345192 +98 56 32345192
| | - Ghodsieh Bagherzade
- Department of Chemistry, Faculty of Sciences, University of Birjand Birjand 97175-615 Iran +98 56 32345192 +98 56 32345192
| | - Hossein Eshghi
- Department of Chemistry, Faculty of Science, Ferdowsi University of Mashhad Mashhad Iran
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