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.
The nickel-catalyzed reductive coupling of alkynes and imines with Et(2)Zn as a reductant by using electron-rich phosphine ligands has been developed, affording various allylic amines with high yields and excellent chemoselectivities. Chiralinduction was also achieved in this reductive coupling reaction when a nickel catalyst containing a chiral spiro phosphine ligand was used.
SEALING AGENT FOR LIQUID-CRYSTAL DISPLAY CELL, COMPOSITION FOR SEALING AGENT FOR LIQUID-CRYSTAL DISPLAY CELL, AND LIQUID-CRYSTAL DISPLAY ELEMENT
申请人:Mitsui Chemicals, Inc.
公开号:EP1153952A1
公开(公告)日:2001-11-14
A sealant for a liquid crystal display cell which has a water absorption coefficient of 2 mass % or less, and a composition for a liquid crystal display cell sealant comprising an epoxy resin (1), a curing agent (2) comprising at least one selected from polyphenol compounds, polyphenol resins and esterified products thereof and a curing accelerator (3) comprising at least one selected from alkylurea derivatives and phosphazene compounds. A liquid crystal display element produced by using the composition is capable of securing long time display (quality) stability under high temperature and high humidity.
Iron-Mediated Carboarylation/Cyclization of Propargylanilines with Acetals: A Concise Route to Indeno[2,1-<i>c</i>]quinolines
作者:Qin Yang、Tongyu Xu、Zhengkun Yu
DOI:10.1021/ol503039j
日期:2014.12.19
FeCl3- and FeBr3-mediated tandem carboarylation/cyclization of propargylanilines with diethyl benzaldehyde acetals furnished the tetracyclic core of indeno[2,1-c]quinolines. 5-Tosyl-6,7-dihydro-5H-indeno[2,1-c]quinoline and 7H-indeno[2,1-c]quinoline derivatives were obtained in good to excellent yields, respectively, by tuning the FeX3 loadings and/or reaction temperatures.
Post, Journal of Organic Chemistry, 1940, vol. 5, p. 247