Studies on the Reaction of Benzopyran-4-one with Hydroxylamine Hydrochloride

作     者：Zheng YAN Wen Long HUANG Wei Yi HUA Si Xun PENG(Department of Medicinal Chemistry, Chinese Pharmaceutical University. Nanjing,210009) 

作者机构：CHINESE PHARMACEUT UNIVDEPT MED CHEMNANJING 210009PEOPLES R CHINA 

出 版 物：《Chinese Chemical Letters》 (中国化学快报（英文版）)

年 卷 期：1997年第8卷第2期

页      面：95-96页

核心收录：

学科分类：081704[工学-应用化学] 07[理学] 08[工学] 0817[工学-化学工程与技术] 070303[理学-有机化学] 0703[理学-化学] 

主　　题：flavanone nitro Robertson 

摘      要：It is reported that 6-methyl-flavanone oxime would rearrange to isoxazoline in the presence of trifluroacetic acid and the rearrangement would not take place in anhydrous ethanol with catalytic amount of pyridine. However, 6-nitro-benzopyran-4-one when treated with hydroxylamine hydrochloride, gave oxime and its isomeric isoxazoline through rearrangement under acid or alkali condition.