First example of a stable 1,1-bidentate Lewis acid based on boron and zirconium: synthesis, reactivity, X-ray analysis and NMR studies

Abstract

Chlorobis(cyclopentadienyl)[1-(1,3,2-dioxaborinane-2-yl)hexyl]zirconium(IV)2, fully characterized by X-ray, ¹H–¹H double-quantum-filtered COSY and ¹³C-¹H heteronuclear chemical shift correlation NMR studies, IR and elemental analysis, reacts selectively with electrophilic reagents, N-bromo- and N-chlorosuccinimide and bromine to give α-halobronic esters; it also polymerizes styrene without the aid of a co-catalyst.