Synthesis of Isoxazoline Derivatives through Boulton-Katritzky Rearrangement of 1,2,4-Oxadiazoles
作者:Antonio Palumbo Piccionello、Annalisa Guarcello、Andrea Pace、Silvestre Buscemi
DOI:10.1002/ejoc.201201308
日期:2013.4
The base-induced rearrangement of 1,2,4-oxadiazoles into isoxazoline derivatives is reported. This represents the first example of a three-atom side-chain rearrangement that involves a saturated CCO side chain at C-3 of the oxadiazole. Nonaromatic 3-amino-isoxazoline derivatives are obtained in good yields. Interestingly, this reaction occurs through the rearrangement of aromatic oxadiazoles to form
报道了碱诱导的 1,2,4-恶二唑重排为异恶唑啉衍生物。这代表了三原子侧链重排的第一个例子,涉及在恶二唑的 C-3 处的饱和 CCO 侧链。以良好的收率获得非芳族3-氨基-异恶唑啉衍生物。有趣的是,该反应是通过芳族恶二唑重排形成比断裂键更不稳定的键而发生的。