作者:A. A. Layeva、E. V. Nosova、G. N. Lipunova、T. V. Trashakhova、V. N. Charushin
DOI:10.1007/s11172-007-0283-x
日期:2007.9
Abstract5-Fluoroquinazoline-2,4-diones and their 2-thio analogs were obtained from 6-fluoroanthranilic acid. Two convenient routes to 5-fluoroquinazolin-4-ones involved cyclocondensation of 6-fluoroanthranilamide with acid chlorides (anhydrides) or with aromatic (heterocyclic) aldehydes. A method for the synthesis of 7-fluoroquinazolin-4-one from 2,4-difluorobenzoic acid was proposed.
摘要 以 6-氟邻氨基苯甲酸为原料制备了 5-氟喹唑啉-2,4-二酮及其 2-硫代类似物。获得 5-氟喹唑啉-4-酮的两种便捷途径包括 6-氟邻氨基苯甲酰胺与酰氯(酸酐)或芳香族(杂环)醛的环缩合反应。提出了一种由2,4-二氟苯甲酸合成7-氟喹唑啉-4-one的方法。