1
|
Paul S, Das S, Mitra B, Chandra Pariyar G, Ghosh P. β-Cyclodextrin: a green supramolecular catalyst assisted eco-friendly one-pot three-component synthesis of biologically active substituted pyrrolidine-2-one. RSC Adv 2023; 13:5457-5466. [PMID: 36793299 PMCID: PMC9924053 DOI: 10.1039/d2ra08054k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2022] [Accepted: 01/25/2023] [Indexed: 02/16/2023] Open
Abstract
A green, novel and eco-efficient synthetic route towards the synthesis of highly substituted bio-active pyrrolidine-2-one derivatives was demonstrated using β-cyclodextrin, a water-soluble supramolecular solid as a green and eco-benign catalyst at room temperature under water-ethanol solvent medium. The exploration of the green catalyst β-cyclodextrin for the metal-free one-pot three-component synthesis of a wide range of highly functionalized bio-active heterocyclic pyrrolidine-2-one moieties from easily available aldehydes and amines explains the superiority and uniqueness of this protocol.
Collapse
Affiliation(s)
- Subhankar Paul
- Department of Chemistry, University of North Bengal District-Darjeeling West Bengal India +91 0353 2699001 +91 0353 2776381
| | - Sharmistha Das
- Department of Chemistry, University of North Bengal District-Darjeeling West Bengal India +91 0353 2699001 +91 0353 2776381
| | - Bijeta Mitra
- Department of Chemistry, University of North Bengal District-Darjeeling West Bengal India +91 0353 2699001 +91 0353 2776381
| | - Gyan Chandra Pariyar
- Department of Food Technology, University of North BengalDistrict-DarjeelingWest BengalIndia
| | - Pranab Ghosh
- Department of Chemistry, University of North Bengal District-Darjeeling West Bengal India +91 0353 2699001 +91 0353 2776381
| |
Collapse
|
2
|
Kang L, Shi L, Song L, Guo X. Facile Fabrication of Superhydrophobic Porous Materials Using the Water-Based Aza-Michael Reaction for High-Efficiency Oil-Water Separation. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.122880] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
|
3
|
Nishida K, Anada T, Tanaka M. Roles of interfacial water states on advanced biomedical material design. Adv Drug Deliv Rev 2022; 186:114310. [PMID: 35487283 DOI: 10.1016/j.addr.2022.114310] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2021] [Revised: 04/12/2022] [Accepted: 04/21/2022] [Indexed: 12/15/2022]
Abstract
When biomedical materials come into contact with body fluids, the first reaction that occurs on the material surface is hydration; proteins are then adsorbed and denatured on the hydrated material surface. The amount and degree of denaturation of adsorbed proteins affect subsequent cell behavior, including cell adhesion, migration, proliferation, and differentiation. Biomolecules are important for understanding the interactions and biological reactions of biomedical materials to elucidate the role of hydration in biomedical materials and their interaction partners. Analysis of the water states of hydrated materials is complicated and remains controversial; however, knowledge about interfacial water is useful for the design and development of advanced biomaterials. Herein, we summarize recent findings on the hydration of synthetic polymers, supramolecular materials, inorganic materials, proteins, and lipid membranes. Furthermore, we present recent advances in our understanding of the classification of interfacial water and advanced polymer biomaterials, based on the intermediate water concept.
Collapse
Affiliation(s)
- Kei Nishida
- Institute for Materials Chemistry and Engineering Kyushu university, 744 Motooka, Nishi-ku Fukuoka 819-0395, Japan; Department of Life Science and Technology, School of Life Science and Technology, Tokyo Institute of Technology, Japan(1)
| | - Takahisa Anada
- Institute for Materials Chemistry and Engineering Kyushu university, 744 Motooka, Nishi-ku Fukuoka 819-0395, Japan
| | - Masaru Tanaka
- Institute for Materials Chemistry and Engineering Kyushu university, 744 Motooka, Nishi-ku Fukuoka 819-0395, Japan.
| |
Collapse
|
4
|
Bosica G, Saliba R. Aza‐Michael Mono‐ and Bis‐Addition of Primary and Secondary Amines Promoted by Silica‐Supported Polyphosphoric Acid, PPA/SiO
2. ChemistrySelect 2022. [DOI: 10.1002/slct.202104359] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Giovanna Bosica
- Department of Chemistry Green Synthetic Organic Chemistry Laboratory University of Malta Msida, MSD 2080 Malta
| | - Ryan Saliba
- Department of Chemistry Green Synthetic Organic Chemistry Laboratory University of Malta Msida, MSD 2080 Malta
| |
Collapse
|
5
|
Understanding water mediated proton migration in conversion of π-bond in olefinic carbon atoms into C–N bond to form β-amino adducts. Tetrahedron 2021. [DOI: 10.1016/j.tet.2021.132482] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
|
6
|
Banerjee B, Priya A, Sharma A, Kaur G, Kaur M. Sulfonated β-cyclodextrins: efficient supramolecular organocatalysts for diverse organic transformations. PHYSICAL SCIENCES REVIEWS 2021. [DOI: 10.1515/psr-2021-0080] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Abstract
The present review summarizes various organic transformations carried out by using sulfonated β-cyclodextrins such as β-cyclodextrin sulfonic acid, β-cyclodextrin propyl sulfonic acid, and β-cyclodextrin butyl sulfonic acid as an efficient, supramolecular reusable catalyst under diverse reaction conditions.
Collapse
Affiliation(s)
- Bubun Banerjee
- Department of Chemistry , Akal University , Talwandi Sabo , Bathinda , Punjab - 151302 , India
| | - Anu Priya
- Department of Chemistry , Akal University , Talwandi Sabo , Bathinda , Punjab - 151302 , India
| | - Aditi Sharma
- Department of Chemistry , Akal University , Talwandi Sabo , Bathinda , Punjab - 151302 , India
| | - Gurpreet Kaur
- Department of Chemistry , Akal University , Talwandi Sabo , Bathinda , Punjab - 151302 , India
| | - Manmeet Kaur
- Department of Chemistry , Akal University , Talwandi Sabo , Bathinda , Punjab - 151302 , India
| |
Collapse
|
7
|
Catalytic Application of Ceric Ammonium Nitrate-Stabilized Maghemite Nanoparticles (CAN-γ-Fe2O3) for Ultrasound Assisted Synthesis of β-Amino Derivatives. J Inorg Organomet Polym Mater 2021. [DOI: 10.1007/s10904-021-02006-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
|
8
|
Polina S, Putta VPRK, Gujjarappa R, Pujar PP, Malakar CC. Aza‐Michael
addition of 1,
2‐diazoles
to structurally diverse enones: Efficient methods toward
β‐amino
ketones. J Heterocycl Chem 2021. [DOI: 10.1002/jhet.4221] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Saibabu Polina
- Department of Chemistry CHRIST (Deemed to be University) Bengaluru India
| | | | - Raghuram Gujjarappa
- Department of Chemistry National Institute of Technology Manipur Imphal India
| | | | - Chandi C. Malakar
- Department of Chemistry National Institute of Technology Manipur Imphal India
| |
Collapse
|
9
|
Mitra B, Chandra Pariyar G, Ghosh P. β-Cyclodextrin: a supramolecular catalyst for metal-free approach towards the synthesis of 2-amino-4,6-diphenylnicotinonitriles and 2,3-dihydroquinazolin-4(1 H)-one. RSC Adv 2021; 11:1271-1281. [PMID: 35424112 PMCID: PMC8693512 DOI: 10.1039/d0ra09562a] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2020] [Accepted: 12/08/2020] [Indexed: 11/21/2022] Open
Abstract
β-Cyclodextrin, a green and widespread supramolecular catalyst, has been explored as a highly proficient promoter for the metal-free one-pot multi-component synthesis of a vast range of highly functionalized bioactive heterocyclic moiety, 2-amino-4,6-diphenylnicotinonitriles and 2,3-dihydroquinazolin-4(1H)-one, from easily available precursor aldehydes. The main endeavor of these protocols is to explore this organic supramolecule in one-pot multi-component synthesis. Absence of metal catalyst or toxic acid and harsh reaction conditions, excellent functional group tolerance, inexpensive, greener and environmentally safe protocol are the key advantages of this work.
Collapse
Affiliation(s)
- Bijeta Mitra
- Department of Chemistry, University of North Bengal Dist. Darjeeling West Bengal India +91 353 2699001 +91 353 2776381
| | - Gyan Chandra Pariyar
- Department of Food Technology, University of North Bengal Dist. Darjeeling West Bengal India
| | - Pranab Ghosh
- Department of Chemistry, University of North Bengal Dist. Darjeeling West Bengal India +91 353 2699001 +91 353 2776381
| |
Collapse
|
10
|
Kardooni R, Kiasat AR. Polyethylene Glycol as a Green and Biocompatible Reaction Media for the Catalyst Free Synthesis of Organic Compounds. CURR ORG CHEM 2020. [DOI: 10.2174/1385272824999200605161840] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Replacing harmful organic solvents that caused environmental pollution with an alternative medium for the development of ideal synthetic strategies is one of the primary focal points of green chemistry. Utilizing polyethylene glycol (PEG) as a nonvolatile solvent and promotor for the evaluation of safe processes has made a considerable contribution to the reduction of pollution problems. The current review summarizes the recent well-known catalyst-free organic reaction performed in polyethylene glycol as a green and biocompatible reaction medium.
Collapse
Affiliation(s)
- Rezvan Kardooni
- Chemistry Department, College of Science, Shahid Chamran University of Ahvaz, Ahvaz, Iran
| | - Ali Reza Kiasat
- Chemistry Department, College of Science, Shahid Chamran University of Ahvaz, Ahvaz, Iran
| |
Collapse
|
11
|
ARSLAN M. In situ Crosslinking System of Gelatin with Acrylated β-cyclodextrin Towards the Fabrication of Hydrogels for Sustained Drug Release. JOURNAL OF THE TURKISH CHEMICAL SOCIETY, SECTION A: CHEMISTRY 2020. [DOI: 10.18596/jotcsa.717856] [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] Open
|
12
|
Abstract
The particular β-cyclodextrin 3D structure, with its hydrophilic surface and
apolar cavity, has enabled to partially or totally encapsulate hydrophobic molecules of appropriated
size and shape in aqueous solution as well as in solid-state through the formation
of a reversible host–guest complex. Accordingly, β-cyclodextrin based nanosponges
have been prepared and used in previous years for the synthesis of organic compounds. In
this review, we are going to mention some of the recent reports on the application of β-
cyclodextrin 3D nanosponges in organic synthesis catalysis. Furthermore, it should be
mentioned that these compounds have also been utilized for numerous applications including
drug delivery, gas storage, rubber manufacture, diagnostics, cosmetics, agriculture,
smart fabrics, water purification, and flame retardants.
Collapse
Affiliation(s)
- Ali R. Kiasat
- Department of Chemistry, Faculty of Science, Shahid Chamran University of Ahvaz, Ahvaz, Iran
| | - Seyyed J. Saghanezhad
- Department of Chemistry, ACECR-Production Technology Research Institute, Ahvaz, Iran
| | - Samaneh Noori
- Department of Chemistry, Faculty of Science, Shahid Chamran University of Ahvaz, Ahvaz, Iran
| |
Collapse
|
13
|
Dutt S, Goel V, Garg N, Choudhury D, Mallick D, Tyagi V. Biocatalytic Aza‐Michael Addition of Aromatic Amines to Enone Using α‐Amylase in Water. Adv Synth Catal 2019. [DOI: 10.1002/adsc.201901254] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Sunil Dutt
- School of Chemistry and BiochemistryThapar Institute of Engineering and Technology Patiala 147004, Punjab India
| | - Vanshita Goel
- School of Chemistry and BiochemistryThapar Institute of Engineering and Technology Patiala 147004, Punjab India
| | - Neha Garg
- School of Basic SciencesIndian Institute of Technology Mandi 175005, Himachal Pradesh India
| | - Diptiman Choudhury
- School of Chemistry and BiochemistryThapar Institute of Engineering and Technology Patiala 147004, Punjab India
| | - Dibyendu Mallick
- Department of ChemistryPresidency University Kolkata 700073, West Bengal India
| | - Vikas Tyagi
- School of Chemistry and BiochemistryThapar Institute of Engineering and Technology Patiala 147004, Punjab India
| |
Collapse
|
14
|
Tayade YA, Jangale AD, Dalal DS. Simple and Highly Efficient Synthesis of Thioamide Derivatives Using β-Cyclodextrin as Supramolecular Catalyst in Water. ChemistrySelect 2018. [DOI: 10.1002/slct.201801553] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Yogesh A. Tayade
- School of Chemical Sciences; North Maharashtra University; Jalgaon - 425 001 India
| | - Asha D. Jangale
- School of Chemical Sciences; North Maharashtra University; Jalgaon - 425 001 India
| | - Dipak S. Dalal
- School of Chemical Sciences; North Maharashtra University; Jalgaon - 425 001 India
| |
Collapse
|
15
|
Dalal DS, Patil DR, Tayade YA. β‐Cyclodextrin: A Green and Efficient Supramolecular Catalyst for Organic Transformations. CHEM REC 2018; 18:1560-1582. [DOI: 10.1002/tcr.201800016] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2018] [Accepted: 05/07/2018] [Indexed: 12/16/2022]
Affiliation(s)
- Dipak S. Dalal
- Department of Organic Chemistry, School of Chemical SciencesNorth Maharashtra University Jalgaon – 425 001 (M. S.) India
| | - Dipak R. Patil
- Department of Organic Chemistry, School of Chemical SciencesNorth Maharashtra University Jalgaon – 425 001 (M. S.) India
| | - Yogesh A. Tayade
- Department of Organic Chemistry, School of Chemical SciencesNorth Maharashtra University Jalgaon – 425 001 (M. S.) India
| |
Collapse
|
16
|
Kumar GS, Singh D, Kumar M, Kapur M. Palladium-Catalyzed Aerobic Oxidative Coupling of Allylic Alcohols with Anilines in the Synthesis of Nitrogen Heterocycles. J Org Chem 2018. [DOI: 10.1021/acs.joc.8b00287] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Gangam Srikanth Kumar
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal Bypass Road, Bhauri, Bhopal 462066, MP, India
| | - Diksha Singh
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal Bypass Road, Bhauri, Bhopal 462066, MP, India
| | - Manish Kumar
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal Bypass Road, Bhauri, Bhopal 462066, MP, India
| | - Manmohan Kapur
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal Bypass Road, Bhauri, Bhopal 462066, MP, India
| |
Collapse
|
17
|
Firouzabadi H, Iranpoor N, Farahi S. TiCl2(OTf)-SiO2: A solid stable lewis acid catalyst for Michael addition of α-Aminophosphonates, Amines, Indoles and Pyrrole. PHOSPHORUS SULFUR 2018. [DOI: 10.1080/10426507.2017.1417298] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Habib Firouzabadi
- Department of Chemistry, College of Sciences, Shiraz University, Shiraz, Iran
| | - Naser Iranpoor
- Department of Chemistry, College of Sciences, Shiraz University, Shiraz, Iran
| | - Soghra Farahi
- Department of Chemistry, Faculty of Sciences, Behbahan Khatam Alanbia University of Technology, Behbahan, Iran
| |
Collapse
|
18
|
De Alwis Watuthanthrige N, Kurek PN, Konkolewicz D. Photolabile protecting groups: a strategy for making primary amine polymers by RAFT. Polym Chem 2018. [DOI: 10.1039/c7py01398a] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Photolabile amine protecting groups are combined with RAFT polymerization to create well-defined amine containing polymers, which is typically a challenge for RAFT polymerization.
Collapse
Affiliation(s)
| | - Pierce N. Kurek
- Department of Chemistry and Biochemistry
- Miami University
- Oxford
- USA
| | | |
Collapse
|
19
|
Khachatryan HN, Hayotsyan SS, Badalyan KS, Aivazyan AG, Danagulyan GG, Attaryan HS. Unusual behavior of 3,5-dimethylpyrazole in the aza-Michael reaction with crotonaldehyde in aqueous medium. RUSSIAN JOURNAL OF ORGANIC CHEMISTRY 2017. [DOI: 10.1134/s1070428017100220] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
20
|
Bai CC, Tian BR, Zhao T, Huang Q, Wang ZZ. Cyclodextrin-Catalyzed Organic Synthesis: Reactions, Mechanisms, and Applications. Molecules 2017; 22:E1475. [PMID: 28880241 PMCID: PMC6151768 DOI: 10.3390/molecules22091475] [Citation(s) in RCA: 44] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2017] [Accepted: 09/02/2017] [Indexed: 11/16/2022] Open
Abstract
Cyclodextrins are well-known macrocyclic oligosaccharides that consist of α-(1,4) linked glucose units and have been widely used as artificial enzymes, chiral separators, chemical sensors, and drug excipients, owing to their hydrophobic and chiral interiors. Due to their remarkable inclusion capabilities with small organic molecules, more recent interests focus on organic reactions catalyzed by cyclodextrins. This contribution outlines the current progress in cyclodextrin-catalyzed organic reactions. Particular emphases are given to the organic reaction mechanisms and their applications. In the end, the future directions of research in this field are proposed.
Collapse
Affiliation(s)
- Chang Cai Bai
- School of Pharmacy, Ningxia Medical University, Yinchuan 750004, China.
| | - Bing Ren Tian
- School of Pharmacy, Ningxia Medical University, Yinchuan 750004, China.
| | - Tian Zhao
- School of Pharmacy, Ningxia Medical University, Yinchuan 750004, China.
| | - Qing Huang
- School of Pharmacy, Ningxia Medical University, Yinchuan 750004, China.
- Key Laboratory of Hui Ethnic Medicine Modernization, Ministry of Education, Yinchuan 750004, China.
| | - Zhi Zhong Wang
- School of Pharmacy, Ningxia Medical University, Yinchuan 750004, China.
- Key Laboratory of Hui Ethnic Medicine Modernization, Ministry of Education, Yinchuan 750004, China.
| |
Collapse
|
21
|
Recyclable Fe3O4 Nanoparticles Catalysts for Aza-Michael Addition of Acryl Amides by Magnetic Field. Catalysts 2017. [DOI: 10.3390/catal7070219] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
|
22
|
Verma N, Kumar S, Ahmed N. LiBr/β-CD/IBX/H 2O-DMSO: A new approach for one-pot biomimetic regioselective ring opening of chalcone epoxides to bromohydrins and conversion to 1,2,3-triketones. SYNTHETIC COMMUN 2017. [DOI: 10.1080/00397911.2017.1315537] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Nishant Verma
- Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand, India
| | - Sumit Kumar
- Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand, India
- Department of Chemistry, Central University of Haryana, Mahendergarh, India
| | - Naseem Ahmed
- Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand, India
| |
Collapse
|
23
|
Majumdar B, Mandani S, Bhattacharya T, Sarma D, Sarma TK. Probing Carbocatalytic Activity of Carbon Nanodots for the Synthesis of Biologically Active Dihydro/Spiro/Glyco Quinazolinones and Aza-Michael Adducts. J Org Chem 2017; 82:2097-2106. [PMID: 28121145 DOI: 10.1021/acs.joc.6b02914] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Herein, we report the fluorescent carbon dots as an effective and recyclable carbocatalyst for the generation of carbon-heteroatom bond leading to quinazolinone derivatives and aza-Michael adducts under mild reaction conditions. The results establish this nanoscale form of carbon as an alternative carbocatalyst for important acid catalyzed organic transformations. The mild surface acidity of carbon dots imparted by -COOH functionality could effectively catalyze the formation of synthetically challenging spiro/glycoquinazolinones under the present reaction conditions.
Collapse
Affiliation(s)
- Biju Majumdar
- Discipline of Chemistry, Indian Institute of Technology Indore , Khandwa Road, Simrol, Madhya Pradesh 453552, India
| | - Sonam Mandani
- Discipline of Chemistry, Indian Institute of Technology Indore , Khandwa Road, Simrol, Madhya Pradesh 453552, India
| | - Tamalika Bhattacharya
- Discipline of Chemistry, Indian Institute of Technology Indore , Khandwa Road, Simrol, Madhya Pradesh 453552, India
| | - Daisy Sarma
- Discipline of Chemistry, Indian Institute of Technology Indore , Khandwa Road, Simrol, Madhya Pradesh 453552, India
| | - Tridib K Sarma
- Discipline of Chemistry, Indian Institute of Technology Indore , Khandwa Road, Simrol, Madhya Pradesh 453552, India
| |
Collapse
|
24
|
Ghorad A, Mahalle S, Khillare LD, Sangshetti JN, Bhosle MR. β-Cyclodextrin as a Biomimetic Catalyst for the Efficient Synthesis of 4-Oxo-pyrido[1,2-a] Pyrimidine-3-Carbonitrile in Aqueous Medium. Catal Letters 2017. [DOI: 10.1007/s10562-017-1983-y] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
|
25
|
Khachatryan HN, Bagdasaryan GA, Hayotsyan SS, Attaryan OS, Danagulyan GG. Addition of cyclic amines to α,β-unsaturated acids via the aza-Michael reaction. RUSS J GEN CHEM+ 2016. [DOI: 10.1134/s1070363216080302] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
26
|
Warr RJ, Bell KJ, Gadzhieva A, Cabot R, Ellis RJ, Chartres J, Henderson DK, Lykourina E, Wilson AM, Love JB, Tasker PA, Schröder M. A Comparison of the Selectivity of Extraction of [PtCl6](2-) by Mono-, Bi-, and Tripodal Receptors That Address Its Outer Coordination Sphere. Inorg Chem 2016; 55:6247-60. [PMID: 27256829 DOI: 10.1021/acs.inorgchem.6b00848] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Extraction and binding studies of [PtCl6](2-) are reported for 24 mono-, bi-, and tripodal extractants containing tris(2-aminoethyl)amine (TREN) or tris(3-aminopropyl)amine (TRPN) scaffolds. These reagents are designed to recognize the outer coordination sphere of [PtCl6](2-) and to show selectivity over chloride anion under acidic conditions. Extraction from 0.6 M HCl involves protonation of the N-center in tertiary amines containing one, two, or three urea, amide, or sulfonamide hydrogen-bond donors to set up the following equilibrium: 2L(org) + 2H(+) + [PtCl6](2-) ⇌ [(LH)2PtCl6](org). All reagents show higher Pt loading than trioctylamine, which was used as a positive control to represent commercial trialkylamine reagents. The loading of [PtCl6](2-) depends on the number of pendant amides in the extractant and follows the order tripodal > bipodal > monopodal, with urea-containing extractants outperforming amide and sulfonamide analogues. A different series of reagents in which one, two, or three of the alkyl groups in tris-2-ethylhexylamine are replaced by 3-N'-hexylpropanamide groups all show a comparably high affinity for [PtCl6](2-) and high selectivity over chloride anion in extractions from aqueous acidic solutions. (1)H NMR titration of three extractants [LH·Cl] with [(Oct4N)2PtCl6] in CDCl3 provides evidence for high selectivity for [PtCl6](2-) over chloride for tri- and bipodal extractants, which show higher binding constants than a monopodal analogue.
Collapse
Affiliation(s)
- Rebecca J Warr
- School of Chemistry, University of Nottingham , Nottingham, NG7 2RD, U.K
| | - Katherine J Bell
- School of Chemistry, University of Nottingham , Nottingham, NG7 2RD, U.K
| | | | - Rafel Cabot
- School of Chemistry, University of Nottingham , Nottingham, NG7 2RD, U.K
| | - Ross J Ellis
- EaStCHEM School of Chemistry, University of Edinburgh , Edinburgh, EH9 3FJ, U.K
| | - Jy Chartres
- EaStCHEM School of Chemistry, University of Edinburgh , Edinburgh, EH9 3FJ, U.K
| | - David K Henderson
- EaStCHEM School of Chemistry, University of Edinburgh , Edinburgh, EH9 3FJ, U.K
| | - Eleni Lykourina
- School of Chemistry, University of Nottingham , Nottingham, NG7 2RD, U.K
| | - A Matthew Wilson
- EaStCHEM School of Chemistry, University of Edinburgh , Edinburgh, EH9 3FJ, U.K
| | - Jason B Love
- EaStCHEM School of Chemistry, University of Edinburgh , Edinburgh, EH9 3FJ, U.K
| | - Peter A Tasker
- EaStCHEM School of Chemistry, University of Edinburgh , Edinburgh, EH9 3FJ, U.K
| | - Martin Schröder
- School of Chemistry, University of Nottingham , Nottingham, NG7 2RD, U.K.,School of Chemistry, University of Manchester , Manchester, M13 9PL, U.K
| |
Collapse
|
27
|
Kim S, Kang S, Kim G, Lee Y. Copper-Catalyzed Aza-Michael Addition of Aromatic Amines or Aromatic Aza-Heterocycles to α,β-Unsaturated Olefins. J Org Chem 2016; 81:4048-57. [DOI: 10.1021/acs.joc.6b00341] [Citation(s) in RCA: 49] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Seongcheol Kim
- Department of Chemistry, Kwangwoon University, Seoul 01897, Republic Korea
| | - Seongil Kang
- Department of Chemistry, Kwangwoon University, Seoul 01897, Republic Korea
| | - Gihyeon Kim
- Department of Chemistry, Kwangwoon University, Seoul 01897, Republic Korea
| | - Yunmi Lee
- Department of Chemistry, Kwangwoon University, Seoul 01897, Republic Korea
| |
Collapse
|
28
|
Hosseinzadeh R, Aghili N, Tajbakhsh M. Synthesis, Characterization and Catalytic Application of MCM 41 Supported Phenanthrolinium Dibromide Catalyst for Aza-Michael Addition Reaction in Aqueous Medium. Catal Letters 2016. [DOI: 10.1007/s10562-016-1743-4] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
|
29
|
Datta A, Adhikary J, Chatterjee S, Ghosh D, Khamarui S, Chattopadhyay T. Synthesis and characterization of a magnetically separable novel FeO@L-DOPA@Cu nanocatalyst (L-DOPA = L-3,4-dihydroxyphenyylalanine): Asymmetric aza-Michael addition reaction. Inorganica Chim Acta 2016. [DOI: 10.1016/j.ica.2016.02.019] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
|
30
|
Ghasemi MH, Kowsari E, Shafiee A. Aza-Michael-type addition reaction catalysed by a supported ionic liquid phase incorporating an anionic heteropoly acid. Tetrahedron Lett 2016. [DOI: 10.1016/j.tetlet.2016.01.107] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
|
31
|
Heredia DA, Larghi EL, Kaufman TS. A Straightforward Synthesis of 5-Methylaaptamine from Eugenol, Employing a 6π-Electrocyclization Reaction of a 1-Azatriene. European J Org Chem 2016. [DOI: 10.1002/ejoc.201501566] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
|
32
|
Payra S, Saha A, Banerjee S. On-water magnetic NiFe2O4 nanoparticle-catalyzed Michael additions of active methylene compounds, aromatic/aliphatic amines, alcohols and thiols to conjugated alkenes. RSC Adv 2016. [DOI: 10.1039/c6ra21160g] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023] Open
Abstract
Here, we have demonstrated Michael addition of active methylene compounds, aromatic/aliphatic amines, thiols and alcohols to conjugated alkenes using magnetic nano-NiFe2O4 as reusable catalyst in water.
Collapse
Affiliation(s)
- Soumen Payra
- Department of Chemistry
- Guru Ghasidas Vishwavidyalaya (A Central University)
- Bilaspur – 495009
- India
| | - Arijit Saha
- Department of Chemistry
- Guru Ghasidas Vishwavidyalaya (A Central University)
- Bilaspur – 495009
- India
| | - Subhash Banerjee
- Department of Chemistry
- Guru Ghasidas Vishwavidyalaya (A Central University)
- Bilaspur – 495009
- India
| |
Collapse
|
33
|
[ADPQ][CH3COO]: efficient and recyclable catalyst for aza-Michael addition of α, β-unsaturated compounds and amines under solvent-free conditions. RESEARCH ON CHEMICAL INTERMEDIATES 2015. [DOI: 10.1007/s11164-015-1950-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
|
34
|
Sarma P, Saikia S, Borah R. Design of Supported Organocatalysts from Carboxylic Acids for the Mannich-Type Synthesis ofβ-Amino Carbonyl Compounds. SYNTHETIC COMMUN 2015. [DOI: 10.1080/00397911.2015.1105983] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
|
35
|
Ali B, Shamim A, Vasconcelos SN, Stefani HA. Synthesis and applications of 4-substituted 1-(4-iodophenyl)pyrrolidine-2,5-diones. Tetrahedron Lett 2015. [DOI: 10.1016/j.tetlet.2015.05.066] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
|
36
|
Gong K, Wang H, Wang S, Ren X. β-Cyclodextrin-propyl sulfonic acid: a new and eco-friendly catalyst for one-pot multi-component synthesis of 3,4-dihydropyrimidones via Biginelli reaction. Tetrahedron 2015. [DOI: 10.1016/j.tet.2015.05.028] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
|
37
|
Narayanan A, Maiti B, De P. Exploring the post-polymerization modification of side-chain amino acid containing polymers via Michael addition reactions. REACT FUNCT POLYM 2015. [DOI: 10.1016/j.reactfunctpolym.2015.04.001] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
38
|
Khachatryan AN, Hayotsyan SS, Attaryan HS, Hasratyan GV. Thermal addition of pyrazoles to but-3-enenitrile. RUSS J GEN CHEM+ 2015. [DOI: 10.1134/s1070363215040404] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
39
|
Croix C, Prié G, Chaulet C, Viaud-Massuard MC. Rhodium-catalyzed 1,4-addition of arylboronic acids to 3-benzylidene-1H-pyrrolo[2,3-b]pyridin-2(3H)-one derivatives. J Org Chem 2015; 80:3264-9. [PMID: 25689109 DOI: 10.1021/jo502784h] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
7-Azaindoles are versatile building blocks, especially in medicinal chemistry, where they serve as bioisosteres of indoles or purines. Herein, we present a novel rhodium-catalyzed asymmetric 1,4-addition of arylboronic acids to 3-benzylidene-1H-pyrrolo[2,3-b]pyridin-2(3H)-ones, as these substrates are exocyclic methylene lactamyl Michael acceptors. Ten new original derivatives of 1H-pyrrolo[2,3-b]pyridin-2(3H)-one have been obtained.
Collapse
Affiliation(s)
- Cécile Croix
- GICC UMR 7292, Equipe 4 "Innovation Moléculaire et Thérapeutique", Université de Tours, Labex SYNORG, Faculté de Pharmacie, 31 avenue Monge, 37200 Tours, France
| | - Gildas Prié
- GICC UMR 7292, Equipe 4 "Innovation Moléculaire et Thérapeutique", Université de Tours, Labex SYNORG, Faculté de Pharmacie, 31 avenue Monge, 37200 Tours, France
| | - Charlotte Chaulet
- GICC UMR 7292, Equipe 4 "Innovation Moléculaire et Thérapeutique", Université de Tours, Labex SYNORG, Faculté de Pharmacie, 31 avenue Monge, 37200 Tours, France
| | - Marie-Claude Viaud-Massuard
- GICC UMR 7292, Equipe 4 "Innovation Moléculaire et Thérapeutique", Université de Tours, Labex SYNORG, Faculté de Pharmacie, 31 avenue Monge, 37200 Tours, France
| |
Collapse
|
40
|
Kumar S, Verma N, Ahmed N. β-Cyclodextrin in water: highly facile biomimetic one pot deprotection of phenolic THP/MOM/Ac/Ts ethers and concomitant regioselective cyclization of chalcone epoxides and 2′-aminochalcones. RSC Adv 2015. [DOI: 10.1039/c5ra15996b] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A “green” and mild catalytic method for the deprotection of THP/MOM/Ac/Ts ethers and the concomitant cyclizations of epoxy chalcone to 2-hydroxyindanone or 2′-aminochalcone to aza-flavanone are reported.
Collapse
Affiliation(s)
- Sumit Kumar
- Department of Chemistry
- Indian Institute of Technology Roorkee
- Roorkee 247 667
- India
| | - Nishant Verma
- Department of Chemistry
- Indian Institute of Technology Roorkee
- Roorkee 247 667
- India
| | - Naseem Ahmed
- Department of Chemistry
- Indian Institute of Technology Roorkee
- Roorkee 247 667
- India
| |
Collapse
|
41
|
Ren Y, Zhang W, Lu J, Gao K, Liao X, Chen X. One-pot synthesis of tetrahydro-4H-chromenes by supramolecular catalysis in water. RSC Adv 2015. [DOI: 10.1039/c5ra14385c] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Tetrahydro-4H-chromenes were synthesizedviaan efficient one-pot three-component protocol by supramolecular catalysis with β-cyclodextrin in water.
Collapse
Affiliation(s)
- Yufeng Ren
- Faculty of Life Science and Technology
- Kunming University of Science and Technology
- Kunming 650500
- China
| | - Wei Zhang
- Faculty of Life Science and Technology
- Kunming University of Science and Technology
- Kunming 650500
- China
| | - Jun Lu
- Chengdu Institute of Biology
- Chinese Academy of Sciences
- Chengdu 610041
- China
| | - Kai Gao
- Faculty of Life Science and Technology
- Kunming University of Science and Technology
- Kunming 650500
- China
| | - Xiali Liao
- Faculty of Life Science and Technology
- Kunming University of Science and Technology
- Kunming 650500
- China
| | - Xiaozhen Chen
- Chengdu Institute of Biology
- Chinese Academy of Sciences
- Chengdu 610041
- China
| |
Collapse
|
42
|
Room temperature solvent free aza-Michael reactions over nano-cage mesoporous materials. ACTA ACUST UNITED AC 2014. [DOI: 10.1016/j.molcata.2014.06.031] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
|
43
|
Attri P, Choi EH, Kwon GC, Bhatia R, Gaur J, Arora B, Kim IT. Single-walled Carbon Nanotube-triethylammonium Ionic Liquid as a New Catalytic System for Michael Reaction. B KOREAN CHEM SOC 2014. [DOI: 10.5012/bkcs.2014.35.10.3035] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
|
44
|
Ying A, Li Z, Yang J, Liu S, Xu S, Yan H, Wu C. DABCO-Based Ionic Liquids: Recyclable Catalysts for Aza-Michael Addition of α,β-Unsaturated Amides under Solvent-Free Conditions. J Org Chem 2014; 79:6510-6. [DOI: 10.1021/jo500937a] [Citation(s) in RCA: 67] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Anguo Ying
- School
of Pharmaceutical and Chemical Engineering, Taizhou University, Taizhou 318000, People’s Republic of China
| | - Zhifeng Li
- School
of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, People’s Republic of China
| | - Jianguo Yang
- School
of Pharmaceutical and Chemical Engineering, Taizhou University, Taizhou 318000, People’s Republic of China
| | - Shuo Liu
- School
of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, People’s Republic of China
| | - Songlin Xu
- School
of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, People’s Republic of China
| | - Hua Yan
- School
of Pharmaceutical and Chemical Engineering, Taizhou University, Taizhou 318000, People’s Republic of China
| | - Chenglin Wu
- School
of Pharmaceutical and Chemical Engineering, Taizhou University, Taizhou 318000, People’s Republic of China
| |
Collapse
|
45
|
Kanagaraj K, Bavanidevi K, Chow TJ, Pitchumani K. Selective “turn-off” fluorescent sensing of mercury ions using aminocyclodextrin:3-hydroxy-N-phenyl-2-naphthamide complex in aqueous solution. RSC Adv 2014. [DOI: 10.1039/c3ra45837g] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
|
46
|
Fischer J, Millan S, Ritter H. N,N'-(Hexane-1,6-diyl)bis(4-methyl-N-(oxiran-2-ylmethyl)benzenesulfonamide): Synthesis via cyclodextrin mediated N-alkylation in aqueous solution and further Prilezhaev epoxidation. Beilstein J Org Chem 2013; 9:2834-40. [PMID: 24367447 PMCID: PMC3869289 DOI: 10.3762/bjoc.9.318] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2013] [Accepted: 11/18/2013] [Indexed: 11/23/2022] Open
Abstract
N-alkylation of N,N'-(hexane-1,6-diyl)bis(4-methylbenzenesulfonamide) with allyl bromide and subsequent Prilezhaev reaction with m-chloroperbenzoic acid to give N,N'-(hexane-1,6-diyl)bis(4-methyl-N-(oxiran-2-ylmethyl)benzenesulfonamide) is described. This twofold alkylation was performed in aqueous solution, whereby α-, and randomly methylated β-cyclodextrin were used as adequate phase transfer catalysts and the cyclodextrin–guest complexes were characterized by 1H NMR and 2D NMR ROESY spectroscopy. Finally, the curing properties of the diepoxide with lysine-based α-amino-ε-caprolactam were analyzed by rheological measurements.
Collapse
Affiliation(s)
- Julian Fischer
- Institute of Organic Chemistry and Macromolecular Chemistry, Heinrich-Heine-University Düsseldorf, Universitätsstraße 1, D-40225 Düsseldorf, Germany
| | - Simon Millan
- Institute of Organic Chemistry and Macromolecular Chemistry, Heinrich-Heine-University Düsseldorf, Universitätsstraße 1, D-40225 Düsseldorf, Germany
| | - Helmut Ritter
- Institute of Organic Chemistry and Macromolecular Chemistry, Heinrich-Heine-University Düsseldorf, Universitätsstraße 1, D-40225 Düsseldorf, Germany
| |
Collapse
|
47
|
Liu XB, Lu M, Lu TT, Gu GL. Functionalized Ionic Liquid Promoted Aza-Michael Addition of Aromatic Amines. J CHIN CHEM SOC-TAIP 2013. [DOI: 10.1002/jccs.201000180] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
|
48
|
Tajbakhsh M, Farhang M, Hosseini AA. MgO nanoparticles as an efficient and reusable catalyst for aza-Michael reaction. JOURNAL OF THE IRANIAN CHEMICAL SOCIETY 2013. [DOI: 10.1007/s13738-013-0338-x] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
|
49
|
Tang XJ, Yan ZL, Chen WL, Gao YR, Mao S, Zhang YL, Wang YQ. Aza-Michael reaction promoted by aqueous sodium carbonate solution. Tetrahedron Lett 2013. [DOI: 10.1016/j.tetlet.2013.03.043] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
|
50
|
Dai L, Zhang Y, Dou Q, Wang X, Chen Y. Chemo/regioselective Aza-Michael additions of amines to conjugate alkenes catalyzed by polystyrene-supported AlCl3. Tetrahedron 2013. [DOI: 10.1016/j.tet.2012.12.037] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
|