822-41-3Relevant articles and documents
Meinwald,Uno
, p. 800 (1968)
Zur Photochemie des cis-1,3-Divinylcyclobutans
Trautmann, Walter,Musso, Hans
, p. 982 - 989 (2007/10/02)
The title compound 7 is obtained by ozonolysis of bicyclohex-2-ene (5) and Wittig reaction of the dialdehyde 6.There was no intramolecular photo-cycloaddition observed by irradiation of 7 but rearrangement to cis- and trans-allylvinylcyclopropanes 10 and 11.With the esters 12 - 14 the light energy is wasted in cis-trans-isomerisations.In comparison, the cis-1,3-cyclopentane derivatives 16 and 17 give some cycloaddition.