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Silica Gel-Supported Polyphosphoric Acid (PPA/SiO2): An Efficient and Reusable Heterogeneous Catalyst for Facile Synthesis of 14-Aryl-14H-dibenzo[a,j]xanthenes under Solvent-free Conditions
被引:48
|作者:
Khojastehnezhad, Amir
[1
]
Davoodnia, Abolghasem
[1
]
Bakavoli, Mehdi
[1
]
Tavakoli-Hoseini, Niloofar
[1
]
Zeinali-Dastmalbaf, Mohsen
[1
]
机构:
[1] Islamic Azad Univ, Fac Sci, Dept Chem, Mashhad Branch, Mashhad, Iran
关键词:
14-Aryl-14H-dibenzo[a;
j]xanthenes;
PPA/SiO2;
heterogeneous catalysis;
green chemistry;
solvent-free conditions;
ONE-POT SYNTHESIS;
IONIC LIQUID;
SOLID ACIDS;
CONDENSATION;
DERIVATIVES;
GREEN;
HCLO4-SIO2;
D O I:
10.1002/cjoc.201190081
中图分类号:
O6 [化学];
学科分类号:
0703 ;
摘要:
A simple, efficient and green method for the synthesis of 14-aryl-14H-dibenzo[a,j]xanthenes by a one-pot condensation reaction of beta-naphthol and aryl aldehydes using silica gel-supported polyphosphoric acid (PPA/SiO2), an effective and reusable catalyst, under solvent-free conditions is described. The present methodology offers several advantages, such as a simple procedure with an easy work-up, short reaction times, high yields, and the absence of any volatile and hazardous organic solvents.
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页码:297 / 302
页数:6
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