Potassium dodecatungstocobaltate trihydrate (K5CoW12O40 · 3H2O): A mild and efficient reusable catalyst for the synthesis of amidoalkyl naphthols in solution and under solvent-free conditions |
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| Affiliation: | 1. Key Laboratory of Polyoxometalate Science of the Ministry of Education, Faculty of Chemistry, Northeast Normal University, Changchun 130024, Jilin, China;2. Institute of Advanced Materials, Northeast Normal University, Changchun 130024, Jilin, China;3. Institute of Functional Nano and Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-based Functional Materials and Devices, Soochow University, Suzhou 215123, Jiangsu, China;4. College of Chemistry and Material Science, Hebei Normal University, Shijiazhuang 050024, Hebei, China;1. School of Chemical Sciences, National Centre for Sensor Research, Dublin City University, Glasnevin, Dublin 9, Ireland;2. School of Chemistry, Monash University, Clayton, Victoria 3800, Australia;1. Laboratoire de Physique et Chimie des Interfaces, Faculté des sciences de Monastir, 5000 Monastir, Tunisia;2. Département de Chimie Moléculaire UMR 5250, Univ. Grenoble Alpes − CNRS, 38041, Grenoble, France;3. Laboratoire de Physico-chimie des Matériaux, Université de Monastir, Faculté des Sciences, 5000 Monastir, Tunisia;1. Institute of Chemical Research of Catalonia (ICIQ), The Barcelona Institute of Science and Technology (BIST), Av. Països Catalans, 16, Tarragona E-43007, Spain;2. Departament de Química Física i Inorgànica, Universitat Rovira i Virgili, Marcel·lí Domingo 1, E-43007 Tarragona, Spain;3. ICREA, Pg. Lluís Companys 23, 08010 Barcelona, Spain;1. College of Chemistry and Chemical Engineering, Hunan University, Hunan 410082, PR China;2. College of Science, Hunan Agricultural University, Hunan 410128, PR China;3. Zachry Department of Civil Engineering, Texas A&M University, College Station, TX 77843, USA |
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| Abstract: | An efficient and direct procedure has been developed for the preparation of amidoalkyl naphthols by a one-pot condensation of aryl aldehydes, β-naphthol and urea or amides, in the presence of potassium dodecatungstocobaltate trihydrate [K5CoW12O40 · 3H2O, (1 mol%)] as a heterogeneous catalyst. The reactions were carried out in 1,2-dichloroethane at room temperature or under solvent-free media at elevated temperature. The present methodology offers several advantages such as excellent yields, simple procedure and the catalyst exhibited remarkable reusability. |
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