title: Sulfur-incorporating cyclotriveratrylene analogues: the synthesis of cyclotrithioguaiacylene.
abstract: Cyclotriguaiacylene 1 is the universal precursor of cryptophanes, and represents an important intermediate for the preparation of functionalized cavitands of the cyclotriveratrylene family. Its thio analogue (cyclotrithioguaiacylene 3) was synthesized by two different routes, involving either the Newman-Kwart or the Pummerer rearrangement. The latter, performed starting from a trisulfoxide precursor, produced a purer compound in higher overall yield.
authors.affiliation: Institut de Chimie Moléculaire de l'Université de Bourgogne (ICMUB, CNRS UMR no. 5260), 9 Avenue Alain Savary, BP 47870, F-21078 Dijon, France.
authors.forename: Julien
authors.initials: J
authors.lastname: Sanseverino
authors.forename: Jean-Claude
authors.initials: JC
authors.lastname: Chambron
authors.forename: Emmanuel
authors.initials: E
authors.lastname: Aubert
authors.forename: Enrique
authors.initials: E
authors.lastname: Espinosa