The preparation and cycloaddition reaction of 1-sulfonyl-1-trifluoromethyl allenes
作者:Jun-Li Li、Xian-Jin Yang、Min Jiang、Jin-Tao Liu
DOI:10.1016/j.tetlet.2017.07.050
日期:2017.8
A series of 1-sulfonyl-1-trifluoromethyl allenes were prepared for the first time from commercial available 2-bromo-3,3,3-trifluoropropene. Cycloaddition reaction of these trifluoromethylated allenes with nitrones occured readily under mild conditions, giving the corresponding trifluoromethylated isoxazolidines in high yields.
由市售的2-溴-3,3,3-三氟丙烯首次制备了一系列的1-磺酰基-1-三氟甲基丙二烯。这些三氟甲基化的烯与亚硝基的环加成反应在温和条件下容易发生,从而以高收率得到相应的三氟甲基化的异恶唑烷。