Cycloaddition of 5-substituted 1- pyrroline 1-oxide and conversion of the nitrone cycloadducts into cis-and trans- 2,5-disubstituted pyrrolidines
作者:Sk.Asrof Ali、Mohammed I.M. Wazeer
DOI:10.1016/s0040-4020(01)85751-3
日期:1993.1
carried out. The mechanism of the peracid induced ring opening reaction of isoxazolidines (5) is now firmly established. Second cycloaddition reaction of 5-substituted 1- pyrroline 1-oxide (6) provides an efficient and stereoselective entry into the trans- (24) as well as cis-2,5- disubstituted pyrrolidines (28).
已经进行了对2-取代的1-羟基吡咯烷酮(2)被氧化为醛基和基丁酮的氧化的区域化学行为的研究。现在已经牢固地建立了过氧酸引起的异恶唑烷(5)开环反应的机理。5-取代的1-吡咯啉1-氧化物(6)的第二次环加成反应提供了有效的和立体选择性的进入反式-(24)以及顺式-2,5-二取代的吡咯烷(28)。