Substitutions of coordinated salicylaldehyde and its Schiff bases

✍ Scribed by Sheik A. Samath; Kadarkaraithangam Jeyasubramanian; Subramanian Thambidurai; Sickandar Kamardeen; Sutharavalli K. Ramalingam

• Publisher: Springer
• Year: 1994
• Tongue: English
• Weight: 259 KB
• Volume: 19
• Category: Article
• ISSN: 0340-4285
• DOI: 10.1007/bf00161879

✦ Synopsis

Several bis/tris-salicylaldehyde, salicylaldimine and salicyalethylenediimine chelates of cobalt(III), ehromium(III), cobalt(IX), nickel(II) and copper(II) readily react with various brominating agents and undergo a-bromo/cyano/ succinimido substitution, with or without accompanying bromine substitution of the aryl ring. The selectivity of these reactions on the metal-coordinated salicylaldehyde derivatives allows the preparation in 50-80% yield of hitherto unreported specific a-bromo products. The substituted organic compounds could be isolated by demetallation of the chelate products.