Question

what is ambident nucleophiles

Answer 1

An ambident nucleophile is an anionic nucleophile whose negative charge is delocalized by resonance over two unlike atoms or over two like but non-equivalent atoms.  The most common ambident nucleophiles are enolate ions.  

Answer 2

An ambident nucleophile is an anionicnucleophile whose negative charge is delocalized by resonance over two unlike atoms or over two like but non-equivalent atoms. The most commonambident nucleophiles are enolate ions. For example, the resonance forms of acetone enolate are shown below.