V. Alcazar et al., A PREORGANIZED MACROCYCLE BASED ON A BICYCLIC GUANIDINIUM SUBUNIT WITH 6 CONVERGENT HYDROGEN-BONDS FOR ANION RECOGNITION, Tetrahedron letters, 39(9), 1998, pp. 1033-1036
Macrocycle 2, obtained in 40 % yield in a one-pot synthesis, displays
good affinity for chloride and phosphate anions, such as diphenylphosp
hate or (R)-1,1'-binaphthyl-2,2'-phosphate, as shown by NMR measuremen
ts. (C) 1998 Elsevier Science Ltd. All rights reserved.