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学科主题: Chemistry
题名: one-pot synthesis of 3-substituted-4(3h)-quinazolinones in acidic ionic liquids under microwave irradiation conditions
作者: Li Xinzhong; Lin Qi; Eli Wumanjiang
关键词: Bronsted acid ; ionic liquid ; multi-component
刊名: CHINESE JOURNAL OF ORGANIC CHEMISTRY
发表日期: 2011
卷: 31, 期:6, 页:855-859
收录类别: SCI
摘要: Two novel Bronsted acidic ionic liquids 1-(4-sulfonic)-benzyl-3-methylimidazolium hydrogen sulfate (a) and 1-(4-sulfonic)-benzyl-3-methylpyridium hydrogen sulfate (b) were used as catalyst and medium in the one-pot synthesis of 3-substituted-4(3H)-quinazolinones, using anthranilic acid, triethyl orthoformate or formic acid and aromatic or aliphatic amines as starting materials under microwave irradiation. It was found that the reactions completed within 4 similar to 6 min with good to excellent yields (74 similar to 94%) in the presence of 10 mol% ionic liquids. The ionic liquids can be recovered easily and recycled three times without any significant loss in catalytic activity. This synthetic method has the advantage of generality. The aromatic or aliphatic substituents can be introduced in the 3-position, the substrates with electron-withdrawing substituents can also take part of the reaction smoothly and offered satisfactory yields. In addition to, this synthetic method can use 85% formic acid directly with yields of 72%similar to 91%.
内容类型: 期刊论文
URI标识: http://ir.xjipc.cas.cn/handle/365002/1660
Appears in Collections:新疆维吾尔自治区精细化工工程技术研究中心_期刊论文

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作者单位: Minjiang Univ, Dept Chem & Chem Engn, Fuzhou 350108, Peoples R China;Chinese Acad Sci, Xinjiang Tech Inst Phys & Chem, Urumqi 830011, Peoples R China

Recommended Citation:
Li Xinzhong,Lin Qi,Eli Wumanjiang. one-pot synthesis of 3-substituted-4(3h)-quinazolinones in acidic ionic liquids under microwave irradiation conditions[J]. CHINESE JOURNAL OF ORGANIC CHEMISTRY,2011,31(6):855-859.
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文件名: one-pot synthesis of 3-substituted-4(3h)-quinazolinones in acidic ionic liquids under microwave irradiation conditions.pdf
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