ChemInform Abstract: Ring Closure Reactions of 2,6‐Diazaheptatrienyl Metal Compounds: Synthesis of 3‐Aminoindole Derivatives and 14‐Membered Macrocyclic Dimers.

Abstract

Ring Closure Reactions of 2,6-Diazaheptatrienyl Metal Compounds: Synthesis of 3-Aminoindole Derivatives and 14-Membered Macrocyclic Dimers. -In dilute solution, potassium salts of diimines of type (I) undergo intramolecular cyclization to afford 3-aminoindoles. In more concentrated solution they undergo dimerization to 14-membered N-heterocycles. The vinylogous analogue (IX) provides the δ-carboline (X) under dilute conditions. -(NEUE, B.; REIERMANN, R.; GERDES, K.; FROEHLICH, R.; WIBBELING, B.; WUERTHWEIN*, E.-U.; J. Org. Chem. 76 (2011) 21, 8794-8806, http://dx.