Photolysis of diarylvinylcyclopropenes for the construction of 1-methylene-8a-aryl-1,8a-dihydroazulene skeletons.
Photoirradiation of vinylcyclopropenes in a Pyrex tube provides 1-isopropylidene-3,8a-diphenyl-1,8a-dihydroazulene derivatives in moderate to good yields within 4.5-14 h. A plausible mechanism has been discussed for the formation of these interesting products.
Yu
Fang-Fang
FF
School of Chemistry & Molecular Engineering, Laboratory for Advanced Materials and Institute of Fine Chemicals, East China University of Science and Technology, 130 Mei Long Road, Shanghai 200237, China.
Yang
Wang-Gui
WG
Shi
Min
M