title: Reactions of resin-bound triazenes with dithianylium tetrafluoroborates: efficient synthesis of α-azo ketene dithioacetals and related hydrazones.
abstract: The conversion of dithianylium cations into α-azo ketene dithioacetals via addition of polymer-bound diazonium precursors is shown. This new procedure allows the synthesis of α-azo ketene dithioacetals in one step within 2-90 min at rt and yields highly pure compounds that do not have to be purified in most cases. The α-azo ketene dithioacetals obtained have been shown to be valuable intermediates for the synthesis of hydrazones, α-halogenated α-azo ketene dithioacetals, and azo-functionalized dienes.
authors: Karlsruhe Institute of Technology, Campus North , Hermann-von-Helmholtz Platz 1, 76344 Eggenstein-Leopoldshafen, Germany.
authors: Nicole
authors: N
authors: Jung
authors: Bettina
authors: B
authors: Stanek
authors: Simone
authors: S
authors: Gräßle
authors: Martin
authors: M
authors: Nieger
authors: Stefan
authors: S
authors: Bräse