Boric acid: a new regiospecific decarboxylating agent. Syntheses of cyclic imines, β-enaminones, and β-enaminodiketones from β-enaminoesters

P Delbecq, D Bacos, JP Celerier…

Index: Delbecq, Philippe; Bacos, Daniel; Celerier, Jean Pierre; Lhommet, Gerard Canadian Journal of Chemistry, 1991 , vol. 69, # 8 p. 1201 - 1206

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Citation Number: 18

Abstract

The synthesis of cyclic imines 2, β-enaminones 6, and β-enaminodiketones 7 is described. Regio-and stereospecific thermolysis of β-enaminoesters 4 with boric acid permit these preparations in generally good yields. Key words: boric acid, cyclic β-enaminoesters, decarboxylation, cyclic imines, cyclic β-enaminones.