The Reactions of Coordinated ligands - A STU D Y O F THE REACTIVITY OF CO O R D IN ATED β-Diketones, β-Ketoimines, and Thio-β-Diketones

Abstract

Reactions of some Schiff-base complexes of diacetoxy boron with phenylisocyanate and nitrosating reagents have been investigated. Phenylisocyanation produces phenylamido-substituted derivatives by electrophilic attack by phenylisocyanate at γ-CH followed by prototropic rearrangement. Nitrosation takes place only in the case of diacetoxy acetylacetonephenylimino boron at γ-CH, producing isonitroso derivative, which gets coordinated to boron through oxygen of the isonitroso derivative, by dislodging the already coordinated carbonyl group of the Schiff-base.