Triflic imide-catalyzed cascade cycloaddition and Friedel–Crafts reaction of diarylvinylidenecyclopropanes with ethyl 5,5-diarylpenta-2,3,4-trienoate
作者:Wei Li、Min Shi
DOI:10.1039/b903965a
日期:——
Triflic imide-catalyzed cascade cycloaddition and FriedelâCrafts reaction of diarylvinylidenecyclopropanes with ethyl 5,5-diarylpenta-2,3,4-trienoates provided a variety of novel polycyclic ester derivatives in moderate to good yields under mild conditions.
Addition of diphenylphosphinodithioic acid and thioacetic acid with vinylidenecyclopropanes: reversed regioselectivities
作者:Wei Li、Min Shi
DOI:10.1016/j.tet.2009.06.090
日期:2009.8
The reaction of vinylidenecyclopropanes 1 with diphenylphosphinodithioic acid produces the adducts 3 in good to high yields in toluene upon heating at 100 °C within 1 h, whereas adducts 5 are obtained in excellent yields in reversed regioselectivity from the reaction of 1 with thioaceticacid under identical conditions. The radical reaction processes have been discussed on the basis of deuterium labeling
Gold(I)-Catalyzed Intramolecular Rearrangement of Vinylidenecyclopropanes
作者:Min Shi、Lei Wu、Jian-Mei Lu
DOI:10.1021/jo801579b
日期:2008.11.7
Vinylidenecyclopropanes 1 can undergo intramolecular rearrangement to give the corresponding functionalized 1,2-dihydronaphthalenes in the presence of gold catalyst under mild conditions. A plausible rearrangement mechanism has been proposed on the basis of control experiments.