在此,我们报道了5-羟基-2-甲基-4 H-吡喃-4-酮与羰基化合物和梅德鲁姆酸的多组分反应的研究。合成6-甲基-3,4-二氢吡喃并[3,2- b ]吡喃-2,8-二酮,3-(3-羟基-6-甲基-4-氧代-4 H-吡喃-的一般方法制备了2-基)丙酰胺和酯,以及7-氧代-7 H-呋喃[3,2 - b ]吡喃-3-基乙酸。开发了有效合成含5-羟基-2-甲基-4 H-吡喃-4-酮片段的螺缩二氢吡喃酮的方法。
A novel and green synthesis of kojic acid derivatives in ionic liquid [bmim]BF4
作者:Yuling Li、Qiushi Jiang、Kai Wang、Baixiang Du、Xiangshan Wang
DOI:10.1016/j.tetlet.2013.10.099
日期:2013.12
A series of 3-(3-hydroxy-6-methyl-4-oxo-4H-pyran-2-yl)-3-phenylpropanamide derivatives were synthesized efficiently by one-pot condensation of aromatic aldehydes, meldrum’s acid, allomaltol, and ammonium acetate in ionicliquid [bmim]BF4. The novel synthesis method offers the advantage of operational simplicity, mild reaction conditions, short reaction time, higher yields, and environmental friendliness