82947-53-3Relevant academic research and scientific papers
Diels-alder reactions with 2,2-bis (trifluoromethyl)-ethylene-1,1-dicarbonitrile as dienophile
Brueckner, Reinhard,Huisgen, Rolf
, p. 3285 - 3288 (2007/10/02)
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 CF3groups. In rate comparison with TCNE, BTF shows electronic acceleration and steric deceleration.
