Nano silica chromic acid/wet SiO2 and NaNO2 as an efficient reagent system for synthesis of azo dyes based on 1-naphthol at room temperature and solvent-free conditions

被引：0
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作者：
Bamoniri, Abdolhamid [1 ]
Mirjalili, Bi Bi Fatemeh [2 ]
Ghorbani-Choghamarani, Arash [3 ]
Yazdanshenas, Mohammad E. [4 ]
Shayanfar, Abbas [4 ,5 ]
Akbari, Ahmad [5 ]
机构：
[1] Univ Kashan, Fac Chem, Dept Organ Chem, Kashan, Iran
[2] Yazd Univ, Coll Sci, Dept Chem, Yazd, Iran
[3] Ilam Univ, Fac Sci, Dept Chem, Ilam, Iran
[4] Islamic Azad Univ, Fac Higher Educ, Dept Text, Tehran, Iran
[5] Univ Kashan, Nanosci & Nanotechnol Inst, Kashan, Iran
来源：
IRANIAN JOURNAL OF CATALYSIS | 2011年 / 1卷 / 02期
关键词：
Azo dyes; Nano silica chromic acid; 1-Naphthol; Solvent-free condition; Diazonium salt;
D O I：
暂无
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
A convenient, rapid, and one-pot method for the synthesis of azo dyes has been developed. In this protocol, diazotization reagent (ArN2+ -CrO3-SiO2) was prepared via grinding of aromatic amines, NaNO2, wet SiO2 and nano silica chromic acid (Nano-SCA) without solvent at room temperature. The obtained diazotization reagent was sufficiently stable to be kept at room temperature in the dry state for long time. Azo dyes were prepared by coupling of ArN2+ -CrO3-SiO2 with 1-naphthoxide in good to excellent yields. Mild and heterogeneous reaction conditions, high stability of diazonium salt, easy procedure, short reaction time and high yields are some important advantages of this protocol.
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页码：51 / 54
页数：4
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