121590-75-8Relevant academic research and scientific papers
NEW SKELETAL REARRANGEMENTS VIA A CONSTRAINED CYCLOPROPYLDICARBINYL DIRADICAL GENERATED IN THE PHOTODECARBONYLATION OF 2,4-DIPHENYLTETRACYCLO2,4.03,7>DECA-9-ENE-6,8-DIONE
Takahashi, Kazuko,Mikami, Emiko,Takase, Kahei,Takahashi, Tsutomu
, p. 5933 - 5936 (2007/10/02)
Photodecarbonylation of the title diketone (1) gave 3,3a-diphenyl-3a,7a-dihydroindenone (2), 1,4-diphenylcyclooctatetraene (3), and 1,6-diphenylcycloheptatrien-7-ylketene (4).The reaction pathways are discussed on proposing intermediates of 1,2-diphenyltetracyclo2,9.05,8>non-3-en-7-one (11) and 1,3-diphenyltricyclo2,9>nona-3,5-dien-8-one (13).Ring expansion of 1 to a 6-membered oxacarbene (17) was also observed.
