AbstractWe report the first successful allylation of aromatic esters by allyltrimethylsilane. The reaction is mediated by 0.3–1.0 equiv. of titanium tetrachloride (TiCl4) at room temperature and leads in a multi‐step, one‐pot reaction to quaternary triallylmethane derivatives 5. The most efficient ester possessed two ortho‐methoxy substituents on the phenol ring. Molecular modelling revealed the ability of this compound to form a bidentate titanium complex, thus improving the steric accessibility of the ester carbonyl to nucleophilic attack.magnified image
Substituted benzazoloporphyrazines for polymerization and surface attachment and articles formed therefrom
申请人:Youngblood W. Justin
公开号:US20110015388A1
公开(公告)日:2011-01-20
The present invention provides an article of manufacture formed from a substrate and a benzazoloporphyrazine bound to the substrate. The article may take a variety of different forms and may be for example an electrochromic display, a molecular capacitor, a battery, a solar cell, or a molecular memory device. Methods of making such articles, along with compounds, methods and intermediates useful for making such benzazoloporphyrazines, are also described.
quest for general and efficient synthetic procedures for dendrons and dendrimers, allylphenol, allylnaphthol and 6-bromonaphthalene AB3 dendrons have been successfully prepared on a large-scale by a rapid and clean route starting from commercially available esters and allyl bromide. In contrast to the known organoiron strategy, the above-mentioned methodology enables the large-scale synthesis of AB3 dendrons
The conjugation between the carbocation center and the adjacent fluorine atoms worked effectively in the cascade defluorinative triallylation of α,α,α-trifluorotoluene derivatives.
dicyclohexyldiphosphino palladium complex was synthesized. The metallodendron was grafted onto core–shell superparamagnetic nanoparticles (γ‐Fe2O3/polymer, 200–500 nm) to give optimal catalytic reactivity in cross‐couplingreactions. The grafted nanoparticles were used as recoverable and reusable catalysts for SuzukiCC cross‐couplingreactions. They showed remarkable reactivity towards iodo‐ and bromoarenes under
SUBSTITUTED BENZAZOLOPORPHYRAZINES FOR POLYMERIZATION AND SURFACE ATTACHMENT AND ARTICLES FORMED THEREFROM
申请人:Youngblood W. Justin
公开号:US20120101243A1
公开(公告)日:2012-04-26
The present invention provides an article of manufacture formed from a substrate and a benzazoloporphyrazine bound to the substrate. The article may take a variety of different forms and may be for example an electrochromic display, a molecular capacitor, a battery, a solar cell, or a molecular memory device. Methods of making such articles, along with compounds, methods and intermediates useful for making such benzazoloporphyrazines, are also described.