Ungewöhnliche Additions- und Cycloadditionsreaktionen von 2-Amino-3-cyanopyrrolen mit Acetylencarbonsäure-estern
作者:Kurt Eger、Gerd Folkers、Martina Frey、Werner Zimmermann、Gabriele Koop-Kirfel
DOI:10.1055/s-1988-27661
日期:——
Unusual Addition and Cycloaddition Reactions of 2-Amino-3-cyanopyrroles with Dimethyl Acetylenedicarboxylate and Methyl Propynoate Amino group activated 4,5-dimethylpyrroles react with acetylenecarboxylate derivatives in a hitherto unknown manner. The formation of the 5-indolone derivatives 6a, b, c, e, g, h as main products depends on the solvent medium. The 1:2 addition product 3a shows an unusual reactivity yielding the isoindole derivative 4a and the isoquinoline derivative 5a.
2-氨基-3-氰基吡咯与乙炔二羧酸二甲酯和丙炔酸甲酯的不寻常加成和环加成反应 氨基活化的4,5-二甲基吡咯以一种未知的方式与乙炔羧酸衍生物反应。 5-吲哚酮衍生物6a、b、c、e、g、h