Gao, Jian Novel chiral N4S2- and N6S3-donor macrocyclic ligands: synthesis, protonation constants, metal-ion binding and asymmetric catalysis in the Henry reaction. [electronic resource] - Organic & biomolecular chemistry Aug 2003 - 2801-6 p. digital Publication Type: Journal Article ISSN: 1477-0520 Standard No.: 10.1039/b305582e doi