In the cycloadditions of the title compound BTF to methylated and phenylated butadienes, NMR spectra of adducts allow to draw the demarcation line between [4+2] and [2+2] cycloadditions. 1-Substituted butadienes accept BTF in the direction less hindered by the bulky CF3 groups. In rate comparison with TCNE, BTF shows electronic acceleration and steric deceleration.
在标题化合物BTF与甲基化和苯基化的
丁二烯的环加成反应中,加合物的NMR光谱允许在[4 + 2]和[2 + 2]环加成反应之间划界线。1-取代的
丁二烯在较小的CF 3基团阻碍的方向上接受BTF 。在与TCNE的速率比较中,BTF显示出电子加速度和空间减速度。