1.
Org Lett
; 15(1): 116-9, 2013 Jan 04.
Artigo
em Inglês
| MEDLINE
| ID: mdl-23286391
RESUMO
Through-the-annulus-catenated calixarenes have been obtained, for the first time, by exploiting the "superweak anion" approach that allows the threading of the calix cavity with functionalized dialkylammonium axles. In addition, the first example of a stereoprogrammed synthesis of a catenane orientational isomer (an oriented calix[2]catenane) has been obtained, after macrocyclization, by using a directional alkylbenzylammonium axle.