<i>tert</i>-Butyl Bromide-Promoted Intramolecular Cyclization of 2-Arylamino Phenyl Ketones and Its Combination with Cu-Catalyzed C–N Coupling: Synthesis of Acridines at Room Temperature
2-arylamino phenyl ketones is established to supersede the traditional high-temperature, strongly acidic conditions and achieve 9-substituted acridines, by virtue of the combination of 2,2,2-trifluoroethanol and tert-butyl bromide. This protocol can be merged well with the preceding Cu-catalyzed intermolecular Chan–Evans–Lam cross-coupling reactions, therefore enabling pot-economic modular synthesis of 9-substituted
A modular method to synthesize acridinederivatives was developed with o-acylanilines and diaryliodoniumsalts. The reactions proceeded smoothly under Cu-catalyzed or metal-free reaction conditions at elevated temperature through tandemarylation/Friedel–Craftsreactions.
METHOD FOR CATALYTIC ASYMMETRIC SYNTHESIS OF OPTICALLY ACTIVE ISOXAZOLINE COMPOUND, AND OPTICALLY ACTIVE ISOXAZOLINE COMPOUND
申请人:NISSAN CHEMICAL INDUSTRIES, LTD.
公开号:US20140350261A1
公开(公告)日:2014-11-27
There is provided a method for catalytic asymmetric synthesis of optically active isoxazoline compound and an optically active isoxazoline compound. A method for catalytic asymmetric synthesis of optically active isoxazoline compound of a formula (6) including reacting an α,β-unsaturated carbonyl compound of a formula (1) and a hydroxylamine in a solvent in the presence of a base by adding a chiral phase transfer catalyst. An optically active isoxazoline compound of a formula (13) that can be synthesized by the method.