10个新的不同取代的3-benzyl-5-aryl-3,5-dihydro-4 H -benzo [6,7]chromeno[2,3 - d ]pyrimidin-4,6,11-triones 3通过一个简单的合成和具有成本效益的一锅法、三组分反应,从现成的 ethyl 2-amino-4-aryl-5,10-dioxo-5,10-dihydro-4 H -benzo[ g ]chromene-3-在无溶剂和无催化剂条件下制备羧酸盐、苄胺和原甲酸三乙酯。筛选了所有新化合物对两种结直肠癌细胞系的抗增殖活性。结果表明,化合物3-benzyl-5-phenyl-3,5-dihydro-4 H -benzo[6,7]chromeno[2,3 - d ]pyrimidine-4,6,11-trione ( 3a) 和 3-benzyl-5-(3-hydroxyphenyl)-3,5-dihydro-4
10个新的不同取代的3-benzyl-5-aryl-3,5-dihydro-4 H -benzo [6,7]chromeno[2,3 - d ]pyrimidin-4,6,11-triones 3通过一个简单的合成和具有成本效益的一锅法、三组分反应,从现成的 ethyl 2-amino-4-aryl-5,10-dioxo-5,10-dihydro-4 H -benzo[ g ]chromene-3-在无溶剂和无催化剂条件下制备羧酸盐、苄胺和原甲酸三乙酯。筛选了所有新化合物对两种结直肠癌细胞系的抗增殖活性。结果表明,化合物3-benzyl-5-phenyl-3,5-dihydro-4 H -benzo[6,7]chromeno[2,3 - d ]pyrimidine-4,6,11-trione ( 3a) 和 3-benzyl-5-(3-hydroxyphenyl)-3,5-dihydro-4
An improved procedure for the three-component synthesis of benzo[g]chromene derivatives using basic ionic liquid
作者:Yi Yu、Hongyun Guo、Xiaojun Li
DOI:10.1002/jhet.747
日期:2011.11
A basicionicliquid, 1‐butyl‐3‐methyl imidazolium hydroxide ([bmim]OH), efficiently promotes a one‐pot, three‐component condensation of aromatic aldehydes, malononitrile or ethyl cyanoacetate, and 2‐hydroxy‐1,4‐naphthoquinone to produce 4‐aryl‐5,10‐dihydro‐4H‐benzo[g]chromene‐5,10‐dione derivatives in high yields at room temperature. This reaction does not involve any hazardous organic solvent and
碱性离子液体1-丁基-3-甲基咪唑鎓氢氧化物([bmim] OH)可有效促进芳香醛,丙二腈或氰基乙酸乙酯与2-羟基-1,4-羟基的一锅三组分缩合。萘醌在室温下以高收率生产4-芳基-5,10-二氢-4 H-苯并[ g ]亚甲基5,10-二酮衍生物。该反应不涉及任何有害的有机溶剂和有毒的催化剂。离子液体被回收并再循环用于随后的反应。此外,与已报道的方法相比,该方案具有易于操作,反应时间短,收率高和对环境有益的优点。J.杂环化学。(2011)。
CeO<sub>2</sub>/CuO@N‐GQDs@NH<sub>2</sub>nanocomposite as a high‐performance catalyst for the synthesis of benzo[g]chromenes
A three‐component reaction of aromatic aldehydes, malononitrile or ethyl cyanoacetate and 2‐hydroxy‐1,4‐naphthaquinone has been achieved in the presence of an amino‐functionalized CeO2/CuO@ nitrogen graphene quantum dot nanocomposite as a highly effective heterogeneous catalyst to produce benzo[g]chromenes. The catalyst has been characterized by X‐ray diffraction, scanning electron microscopy, transmission