Synthesis of Diaryl Ketones Catalyzed by Al2O3‐ZrO2/S2O82− Solid Superacid
摘要:
The acylation of a variety of aromatic compounds with benzoyl chloride or its derivatives and catalytic amounts of Al2O3-ZrO2/S2O82- solid superacid affords the corresponding diaryl ketones in good to excellent yields 75-93% at appropriate temperature.
AbstractLewis‐base‐catalyzed asymmetric hydrosilylation of substituted benzophenone N‐aryl imines was investigated. Among various chiral Lewis‐base catalysts, a catalyst derived from L‐Serine was found to be the most favorable one which promote the reaction to afford a series of (diarylmethyl)amines with high yields (up to 97 %) in moderate to good enantioselectivities (up to 97 % ee). The absolute configuration of the product was determined by the X‐ray crystallographic analysis.magnified image
Zur Kenntnis der Chinolylketone und ihrer Reduktionsprodukte
作者:H. Kühnis、H. de Diesbach
DOI:10.1002/hlca.19580410403
日期:——
AbstractEs werden die Synthesen neuer Chinolylketone beschrieben und deren Verhalten gegenüber Raney‐Nickel und gegenüber Aluminiumisopropylat geprüft.Die Konstitution des schon früher beschriebenen Di‐(4‐nitrobenzyl)‐benzols wird sichergestellt.Die Einwirkung von p‐Nitrobenzoylchlorid oder p‐Nitrobenzylchlorid auf verschiedene Methyl‐substituierte Nitrobenzophenone wird studiert.
Heterogenous Catalysis by Solid Superacids; 11<sup>1</sup>. Perfluorinated Resinsulfonic Acid (Nafion-H)<sup>2</sup>Catalyzed Friedel-Crafts Acylation of Benzene and Substituted Benzenes
作者:George A. OLAH、Ripudaman MALHOTRA、Subhash C. NARANG、Judith A. OLAH