Nucleophilic addition of nitroethylene with various carbanions followed by treatment with chlorotrimethylsilane gave the corresponding silyl nitronate as a 1,3-dipole, which reacted with a monosubstituted alkene (3-buten-2-one or methyl 2-propenoate) to give functionalized 4,5-dihydroisoxazole derivatives in a one-pot procedure.
硝基乙烯与各种碳离子发生亲核加成反应,然后用三
甲基氯硅烷处理,得到相应的
硝酸硅烷基酯作为 1,3-二极,它与单取代烯烃(3-
丁烯-2-酮或 2-
丙烯酸甲酯)发生反应,在一锅程序中得到官能化的 4,5-二氢
异噁唑衍
生物。