Premium
Facile and Green One‐Pot Synthesis of Fluorophore Chromeno[4,3‐ b ]quinolin‐6‐one Derivatives Catalyzed by Halloysite Nanoclay under Solvent‐free Conditions
Author(s) -
AtaeeKachouei Tahereh,
NasrEsfahani Mahboobeh ,
Baltork Iraj Mohammadpoor,
Mirkhani Valiollah,
Moghadam Majid,
Tangestaninejad Shahram,
Kia Reza
Publication year - 2019
Publication title -
chemistryselect
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.437
H-Index - 34
ISSN - 2365-6549
DOI - 10.1002/slct.201803707
Subject(s) - halloysite , fluorophore , catalysis , aryl , solvent , reaction conditions , chemistry , green chemistry , combinatorial chemistry , environmentally friendly , fluorescence , organic chemistry , materials science , reaction mechanism , composite material , ecology , physics , quantum mechanics , biology , alkyl
In this study, we demonstrated a straightforward method for the easy access of chromeno[4,3‐ b ]quinolin‐6‐ones via a one‐pot three‐component reaction of 4‐hydroxycoumarin, aldehydes and aryl amines in the presence of halloysite nanoclay as an eco‐friendly, inexpensive and green heterogeneous catalyst under solvent‐free conditions. Moreover, symmetric and unsymmetric bis ‐chromeno[4,3‐ b ]quinolin‐6‐ones were obtained from dialdehyde or diamines in good yields by this method. To date, this is the first report on the synthesis of symmetric and unsymmetric bis ‐chromeno[4,3‐ b ]quinolin‐6‐ones via such a one‐pot, multicomponent reaction. Some prepared chromeno[4,3‐ b ]quinolin‐6‐ones displayed as interesting fluorophore compounds, hereupon their fluorescence properties were considered. Good to excellent yields, short reaction times and avoidance of toxic solvents are the significant features of this green procedure.