Co-catalysis in phase transfer catalyzed reactions (a concept paper)

Enzyme-catalyzed phosphoryl transfer reactions.

PERSPECTIVES AND SUMMARY ................... ... ...................................................... 877 Classes of enzyme involving reactions at phosphorus...................................................... 878 COVALENT REACTION INTERMEDIATES, CRYPTIC AND OTHERWISE........................................................................................................ 879 Reactions of Pho...

Nitrene transfer reactions catalyzed by gold complexes.

We report here the first gold-catalyzed nitrene transfer reaction. A gold(I) compound, supported by 4,4',4' '-tri-tert-butyl-2,2':6',2' '-terpyridine (tBu3tpy) as the ligand, efficiently catalyzes olefin aziridination with the use of the commercially available oxidant PhI(OAc)2 and sulfonamides. This system also mediates carbene insertion into benzene.

Phase-transfer catalysis. A general green methodology in organic synthesis*

Basic concept of phase-transfer catalysis (PTC), its field of applications and specific features as the most general, efficient, and environment-friendly green methodology of organic synthesis, particularly for industrial processes, is discussed. Organic synthesis is the principal way to produce chemical products of practical applications such as pharmaceuticals, plant protection agents, dyes, ...

Recent Strategies in Organic Reactions Catalyzed by Phase Transfer Catalysts and Analyzed by Gas Chromatography

Phase-transfer catalysis for synthesis of ethyl 2-(4-nitrophenoxy)acetate under sonication- kinetic aspects

Ultrasound assisted phase-transfer catalyzed preparation of ethyl 2-(4-nitrophenoxy)acetate from the corresponding p-nitrophenol and ethyl 2-bromoacetate using the mild solid base, anhydrous potassium carbonate, under very mild conditions is reported. The solid-liquid reactions were performed in a batch reactor equipped with reflux condenser, and ultrasonic irradiations were introduced using an...