1140969-69-2Relevant articles and documents
The influence of stereochemistry on anion binding and transport
Karagiannidis, Louise E.,Hiscock, Jennifer R.,Gale, Philip A.
, p. 626 - 630 (2013/11/19)
Bis(thio)urea receptors (1-4) based on 1,2-bisaminocyclohexane are shown to function as transmembrane anion antiporters. The results show that cis-receptors have a greater propensity for anion transport than analogous trans-receptors. Stability constants using 1H NMR techniques highlight the significance of stereoisomerism on anion binding in solution, as cis-receptors bind anions more strongly than trans-receptors.
A novel bis-thiourea organocatalyst for the asymmetric aza-Henry reaction
Rampalakos, Constantinos,Wulff, William D.
supporting information; experimental part, p. 1785 - 1790 (2009/08/07)
A novel bis-thiourea/2,2′-diaminobinaphthalene (BINAM)-based catalyst for the asymmetric aza-Henry reaction has been developed. This catalyst promotes the reaction of N-Boc imines with nitroalkanes to afford β-nitroamines with good yields and high enantioselectivities. This catalyst has the advantage that it can be prepared in a single step from commercially available materials. A model is proposed for the catalyst action where both components of the reaction are activated simultaneously by hydrogen bonding. Regardless of the mechanism, the success of the present catalyst demonstrates the potential of bis-thioureas as an interesting class of relatively unexplored catalysts.