Lewis Acid Catalyzed Cascade Reactions of Diarylvinylidenecyclopropanes and 1,1,3-Triarylprop-2-yn-1-ols or Their Methyl Ethers
作者:Min Shi、Liang-Feng Yao
DOI:10.1002/chem.200800421
日期:2008.9.26
The reactions of vinylidenecyclopropanes 1 with 1,1,3-triarylprop-2-yn-1-ols or their methyl ethers 2 in the presence of a Lewisacid selectively produce 4-dihydro-1H-cyclopenta[b]naphthalene derivatives 3 or 1,2,3,8-tetrahydrocyclopenta[a]indene derivatives 4 depending on the substituents on the cyclopropane. Good to high yields are obtained under mild conditions. A plausible cascade Meyer-Schuster
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.
Lewis Acid Catalyzed Cascade Reactions of 1,6-Diynes and 1,6-Enynes with Vinylidenecyclopropanes
作者:Liang-Feng Yao、Min Shi
DOI:10.1002/chem.200802284
日期:2009.4.6
Cascadereactions: Lewisacidcatalyzedcascadereactions of 1,6‐diynes and 1,6‐enynes with arylvinylidenecyclopropanes produce polycyclic compounds and isopropylidene‐3,3‐diarylcyclobut‐1‐enylmethyl derivatives (see scheme) in good to high yields along with a PtCl2‐catalyzed cyclization and a Cu(OAc)2⋅H2O‐catalyzed Eglinton coupling reaction.