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
Lewis Acid Catalyzed Reaction of Arylvinylidenecyclopropanes with Acetals: A Facile Synthetic Protocol for the Preparation of Indene Derivatives
作者:Jian-Mei Lu、Min Shi
DOI:10.1021/ol062189a
日期:2006.11.9
[Structure: see text] A number of highly substituted indene derivatives have been prepared in good yields by the reactions of arylvinylidenecyclopropanes 1 with acetals 2 in the presence of Lewis acid under mild conditions. The reaction is believed to proceed via regioselective addition of oxonium intermediate to arylvinylidenecyclopropane and the subsequent intramolecular Friedel-Crafts reaction.
Recent Development of Regio‐ and Stereoselective Aminohalogenation Reaction of Alkenes
作者:Guigen Li、S. R. S. Saibabu Kotti、Cody Timmons
DOI:10.1002/ejoc.200600990
日期:2007.6
This microreview presents the development of the catalytic aminohalogenation of olefins. The olefin substrates include electron-deficient and functionalized ones, such as α,β-unsaturated esters, α,β-unsaturated ketones and α,β-unsaturated nitriles. In addition, the first asymmetric aminohalogenation by the use of Evans chiral auxiliaries is also discussed. The convincing evidence is provided to support
BF3⋅OEt2-Catalyzed Intermolecular Reactions of Vinylidenecyclopropanes with Bis(p-alkoxyphenyl)methanols: A Novel Cationic 1,4-Aryl-Migration Process
作者:Lei Wu、Min Shi、Yuxue Li
DOI:10.1002/chem.200903131
日期:——
BF3⋅OEt2‐catalyzed reactions of vinylidenecyclopropanes (VDCPs) 1 with bis(aryl)methanols 2 were thoroughly investigated. When VDCPs 1 reacted with electron‐rich bis(aryl)methanols 2, diastereomeric rotamers of indene derivatives formed in excellent yields by a novelcationic 1,4‐aryl migration between two carbon atoms and the subsequent intramolecular Friedel–Crafts reaction pathways in the presence
Montmorillonite K-10-catalyzed intramolecular rearrangement of vinylidenecyclopropanes
作者:Jian-Mei Lu、Min Shi
DOI:10.1016/j.tet.2007.05.090
日期:2007.8
A series of naphthalene, indene, and 6aH-benzo[c]fluorene derivatives are synthesized by intramolecular rearrangement of vinylidenecyclopropanes using a heterogeneous solid acid catalyst, montmorilloniteK-10, under mild reaction conditions in good to excellent yields. The solid acidic catalyst, montmorilloniteK-10, can be recovered and reused.
在温和的反应条件下,采用多相固体酸催化剂蒙脱石K-10,通过亚乙烯基环丙烷的分子内重排反应,以良好的收率获得了一系列的萘,茚和6a H-苯并[ c ]芴衍生物。固体酸性催化剂蒙脱石K-10可回收再利用。