Halogenated trifluoroacetylacetylenes have been synthesized for the first time. It was shown that they undergo formally forbidden by the orbital-symmetry rules [2+2] cycloaddition reactions with nonactivated alkenes in the absence of light and catalyst. A possible mechanism for this transformation is suggested.
首次合成了卤代三
氟乙炔基
乙炔。研究表明,在无光和催化剂的条件下,它们与未活化的烯烃发生形式上被轨道对称规则禁止的[2+2]环加成反应。提出了这种转化的一种可能机理。