Organozinc hydroxylamides: on the bulk-dependent interplay of nuclearity, structure and dynamics

Synthesis of chiral binaphthol-based bishydroxylamines

Although bishydroxylamines have been widely used in chemistry, very little has been reported on corresponding chiral representatives. In this paper, we present the synthesis of two chiral binaphthyl-based bishydroxylamines with different substitution patterns at their NOH functions. The key step of the synthesis involves the reduction of the corresponding dinitrone compounds. The molecular structure in the solid state of one of the nitrone precursors is presented.

Computational and Experimental Study of Turbo-Organomagnesium Amide Reagents: Cubane Aggregates as Reactive Intermediates in Pummerer Coupling

The dynamic equilibria of organomagnesium reagents are known to be very complex, and the relative reactivity of their components is poorly understood. Herein, a combination of DFT calculations and kinetic experiments is employed to investigate the detailed reaction mechanism of the Pummerer coupling between sulfoxides and turbo-organomagnesium amides. Among the various aggregates studied, unprecedented heterometallic open cubane structures are demonstrated to yield favorable barriers through a concerted anion-anion coupling/ S-O cleavage step. Beyond a structural curiosity, these results introduce open cubane organometallics as key reactive intermediates in turbo-organomagnesium amide mixtures.

Organozinc hydrazides and their derivatives: synthesis, structural diversity and applications

This review highlights the synthetic aspects, structural diversity and possible applications of organozinc hydrazides and their derivatives.