287208-43-9Relevant articles and documents
Regioselective monoalkylation of calixarenes. Synthesis of homodimer calixarenes
Santoyo-Gonzalez, Francisco,Torres-Pinedo, Antonio,Sanchez-Ortega, Adolfo
, p. 4409 - 4414 (2000)
The selective monoalkylation at the smaller (lower) rim of the p-tert- butylcalix[4]- and -[6]arenes using bis(butyltin)oxide and different alkylating agents is described. The procedure is remarkable for the mild conditions used allowing an efficiently access to monoalkylated calixarene derivatives in moderate to good yields. Monoalkynylcalix[4]arene and monoalkynylcalix[6]arene have been synthetically exploited for the synthesis of bis-calix[n]arenes (n = 4, 6) with a diyne bridge by oxidative coupling of alkynes. In addition, intermolecular methathesis of the obtained monoalkenylcalix[4]arene allowed the preparation of bis-calix[4]arene that are single bridged at the smaller (lower) rim with a 2-butenyl moiety.
Multinuclear calixarene synthons with covalently linked aryl-palladium(II) complexes
Kleij, Arjan W.,Souto, Beatriz,Pastor, Cesar J.,Prados, Pilar,De Mendoza, Javier
, p. 6394 - 6403 (2007/10/03)
New synthetic procedures have been developed for potentially useful metallacalixarene building blocks. The metal sites were covalently connected to calix[n]arenes (n = 4, 6) by oxidative addition of 4-iodobenzyl precursors to either Pd(PPh3)su
