Lewis acid catalyzed rearrangement of vinylcyclopropenes for the construction of naphthalene and indene skeletons.
[reaction: see text] The choice of Lewis acid catalyst can result in dramatic differences in the chemoselectivity of the rearrangement reactions of vinylcyclopropenes. When BF3.OEt2 was used as the catalyst, naphthalenes were formed. However, when Cu(OTf)2 was used as the catalyst, indenes were obtained.
Shao
Li-Xiong
LX
School of Chemistry and Molecular Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai, China 200237.
Zhang
Yun-Peng
YP
Qi
Ming-Hui
MH
Shi
Min
M