N-Heterocyclic Iod(az)olium Salts - Potent Halogen Bond Donors in Organocatalysis

Herein we describe the first systematic investigation of cyclic iodonium salts (iodoliums and iodazoliums) and their performance as XB-donors in a variety of benchmark reactions. It was found that further <i>N</i>-alklyation of the <i>N</i>-heterocycle has a significant influence on their XB-donor capability. These novel dicationic species show a reactivity which is comparable or even better than the best so far described iodine(I) and iodine(III) compounds throughout the investigated reaction set. <br>

N-Heterocyclic Iod(az)olium Salts - Potent Halogen Bond Donors in Organocatalysis

Herein we describe the first systematic investigation of cyclic iodonium salts (iodoliums and iodazoliums) and their performance as XB-donors in a variety of benchmark reactions. It was found that further <i>N</i>-alklyation of the <i>N</i>-heterocycle has a significant influence on their XB-donor capability. These novel dicationic species show a reactivity which is comparable or even better than the best so far described iodine(I) and iodine(III) compounds throughout the investigated reaction set. <br>

Chiral Thioureas—Preparation and Significance in Asymmetric Synthesis and Medicinal Chemistry

For almost 20 years, thioureas have been experiencing a renaissance of interest with the emerged development of asymmetric organocatalysts. Due to their relatively high acidity and strong hydrogen bond donor capability, they differ significantly from ureas and offer, appropriately modified, great potential as organocatalysts, chelators, drug candidates, etc. The review focuses on the family of chiral thioureas, presenting an overview of the current state of knowledge on their synthesis and selected applications in stereoselective synthesis and drug development.

Design of nickel donor–acceptor dithiolenes for 2nd order nonlinear optics: an experimental and computational study

This study, concerning the influence on the NLO properties of a remote functionality in the donor of D–Ni–A dithiolenes 1–4, allows to point out the relationship between NLO properties and the donor capability in modulating the low-energy absorption.

Palladium complexes with simple iminopyridines as catalysts for polyketone synthesis

A systematic study on iminopyridine palladium complexes demonstrates the relationship among NMR chemical shifts, ligand donor capability and catalytic performances.

Intramolecular N-coordination in ketiminoboranes

Ketiminoboranes, R2CNB-R′2, pioneered by Wade et al., are formally isoelectronic with allenes but undergo intramolecular cyclisation when R = 2-pyridyl to form heterocyclic boranes with N-donor capability.