bisalkene

Noun

 * 1)  Any compound, especially a symmetric dimer, containing two alkene groups
 * Aldrichimica Acta Volume 30 No 4 (pdf) from Sigma-Aldrich
 * In the case of cavity bisalkene 75, a single isomer was obtained with two equivalents of isobenzofuran 72, each reacting stereospecifically with a cyclobutene-1,2-diester group to produce the symmetrical product 76.