Studies of Heteroaromaticity. IV. The Thermal 1,3-Dipolar Cycloaddition of Fur- and 5-Nitro-2-furhydroxamoyl Chlorides with Olefinic and Acetylenic Compounds
作者:Tadashi Sasaki、Toshiyuki Yoshioka
DOI:10.1246/bcsj.40.2604
日期:1967.11
3-dipolar cycloaddition with olefinic and acetylenic dipolarophiles by two methods, a) and b). Here, method a) means the routine method via nitrile oxide formation, while method b) means the new type of reaction named in the title. Method b) is concluded to be superior to method a) for the purpose of preparing isoxazoles and isoxazolines. The mechanism of the thermal 1, 3-dipolar cycloaddition is discussed
相应的异恶唑啉和异恶唑是通过 1, 3-偶极环加成与烯属和炔属偶极亲和体通过两种方法 a) 和 b) 制备的。这里,方法a)是指通过氧化腈形成的常规方法,而方法b)是指标题中命名的新型反应。结论方法b)在制备异恶唑和异恶唑啉方面优于方法a)。讨论了热 1, 3-偶极环加成反应的机理。