Heterocyclic chemistry applications of phase-transfer catalysis

Heterocyclic chemistry applications of phase-transfer catalysis in 36, 175... 

Applications of Phase Transfer Catalysis in Heterocyclic Chemistry... 

Applications of Phase Transfer Catalysis in Heterocyclic Chemistry Roger J. Gallo, Mieczyslaw Makosza, Henri J.-M. Dou,... 

R. J. Gallo, M. Makosza, H. J.-M. Dou, and P. Hassanaly present an authora-tive review of applications of phase-transfer catalysis to heterocyclic chemistry that will be of great benefit to all involved with the synthesis of heterocycles. 

Phase transfer catalysis (PTC), or more generally, applications of two-phase systems, is one of the most important recent methodological developments in organic synthesis. It is important because it simplifies procedures, eliminates expensive, inconvenient, and dangerous reactants and solvents, and also allows one to perform many reactions that otherwise proceed unsatisfactory or do not proceed at all. PTC has been reviewed,1-12 but only one review concerns the chemistry of heterocyclic compounds.13... 

Phase transfer catalysis, applications in heterocyclic chemistry, 36, 175 Phenanthridine chemistry, recent developments in, 13, 315 Phenanthrolines, 22, 1 Phenothiazines, chemistry of, 9, 321 Phenoxazines, 8, 83 Photochemistry of heterocycles, 11, I of nitrogen-containing heterocycles, 30, 239... 

Easy and efficient access routes to heterocyclic complexes are of significant interest in organic chemistry and its application in synthesis in both laboratory and industry. During recent years, several novel routes towards such compounds in aqueous media have been described. 2-Substituted 3,4-dihydro-2H-l,4-benzoxa-zines have been prepared in excellent yields and short reaction times through the cyclization of hydroxysulfonamides in water under phase-transfer catalysis conditions (Scheme 3) [26],... 

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