Decarbonylative C–H Coupling of Azoles and Aryl Esters: Unprecedented Nickel Catalysis and Application to the Synthesis of Muscoride A
摘要:
A nickel-catalyzed decarbonylative C-H biaryl coupling of azoles and aryl esters is described. The newly developed catalytic system does not require the use of expensive metal catalysts or silver- or copper-based stoichiometric oxidants. We have successfully applied this new C-H arylation reaction to a convergent formal synthesis of muscoride A.
Multilayered articles and method of manufacture thereof
申请人:SABIC Global Technologies B.V.
公开号:EP1724110B1
公开(公告)日:2019-08-21
Polycarbonate compositions having infrared absorbance, method of manufacture, and articles prepared therefrom
申请人:van den Bogerd A. Jos
公开号:US20070015081A1
公开(公告)日:2007-01-18
A composition is disclosed, comprising a polycarbonate resin, an inorganic infrared shielding additive, and carbon black, wherein an article prepared from the composition has the inorganic infrared shielding additive present at about 0.01 to about 1.0 grams per square meter, and carbon black present at about 0.001 to about 2.0 grams per square meter. The article prepared from the composition meets at least one scale requirement for European Norm EN 169 and/or EN 171, and is useful for preparing infrared shielding protective eyewear with low haze.
Formable Sheets for Medical Applications and Methods of Manufacture Thereof
申请人:Tadros Safwat
公开号:US20070148608A1
公开(公告)日:2007-06-28
Disclosed herein is an appliance for use in an oral cavity, wherein the appliance comprises a polymeric shell that comprises a polymeric mixture, and further wherein the polymeric shell has cavities designed to receive teeth. Disclosed herein too is a method for maintaining or repositioning teeth in the oral cavity comprising placing an appliance in a patient's mouth, wherein the appliance comprises a polymeric shell that comprises a polymeric mixture, and further wherein the polymeric shell has cavities designed to receive teeth.
FLAME RETARDANT POLYCARBONATE COMPOSITIONS HAVING GOOD TRANSPARENCY AND LOW HAZE, METHOD OF MANUFACTURE, AND ARTICLES PREPARED THEREFROM
申请人:Faber Mollerus Rein
公开号:US20070225416A1
公开(公告)日:2007-09-27
A composition is disclosed, comprising a polycarbonate resin and a flame retardant additive comprising a lithium salt, wherein an article prepared from the composition has a haze value less than about 1% as measured at a thickness of about 5.0 mm according to ASTM D1003 and wherein the composition is substantially chlorine and bromine free.