Heterocycles by ring closure of ortho-substituted

Heterocycles by Ring Closure of Ortho-substituted t-Anilines (the t-Amino Effect) O. 

Heterocycles by Ring Closure of ortho-Substituted t-Anilines S ... 

Heterocycles aromaticity of, 17, 255 nomenclature of, 20, 175 photochemistry of, 11, 1 by ring closure of ortho-substituted t-anilines, 14, 211... 

Meth-Cohn, O., The t-Amino Effect Heterocycles Formed by Ring Closure of ortho-Substituted t-Anilines, 65, 1. 

Polyfluorinated a-diketones react with 1,2-diainino compounds, such as ortlio-phenylenediamine, to give 2,3-substituted quinoxalmes [103] Furthermore, the carboxyl function of trifluoropyruvates offers an additional electrophilic center. Cyclic products are obtained with binucleophiles [13, 104] With aliphatic or aromatic 1,2-diamines, six-memhered heterocycles are formed Anilines and phenols undergo C-alkylation with trifluoropyruvates in the ortho position followed by ring closure to form y-lactams and y-lactones [11, 13, 52, 53, 54] (equation 23). 

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