Preparation of diaza dioxa dithia crown p-tert-butylcalix[4]arene by S-alkylation reactions: Use of metallo-calix[4]arene complexes as reaction templates

摘要

New nickel-thiolato-calix[4]arene complexes were produced by mean of metal-template synthesis employing S-alkylation of a nickel thiolato complex with a dichloroethyl- or a dibromoethyl-calix[4]arene derivative. Demetallation of a nickel-thiolato-calix[4]arene complex resulted in a p-tert-butylcalix[4]arene derivative containing two N-, two O- and two S-donors. [References: 8]