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

Article abstract of DOI:10.1246/cl.1998.1037

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 dibromoethylcalix[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.