Direct Synthesis of Metal-Free 1,8-Dihydrotetraaza-[14]annulenes Utilizing the Metal-Template Effect

✍ Scribed by Dipl.-Chem. Gerhold Mühmel; Prof. Dr. Eberhard Breitmaier

• Publisher: John Wiley and Sons
• Year: 1978
• Tongue: English
• Weight: 126 KB
• Volume: 17
• Category: Article
• ISSN: 0044-8249
• DOI: 10.1002/anie.197807721

✦ Synopsis

Synthesis of Metal-Free l,&Dihydrotetraaza-[14]annulenes Utilizing the Metal-Template Effect[**] By Gerhold Miihmei and Eberhard Breitmaier [' I Metal chelates of type ( 5 ) , M = Ni, are formed by cyclocondensation of enediamines (1) and 3-ethoxyacroleins (2) in the presence of nickel(11) ionsc1]. This synthesis, giving yields