title: Thiophene synthesis via 1,1-carboboration.
abstract: Reaction of bis(tert-butylethynyl)sulfide with the boron Lewis acid reagents X-B(C6F5)2 (X = CH3, Cl, C6F5) in pentane at r.t. gave the respective borylated thiophenes in a sequence of 1,1-carboboration reactions. In contrast, bis(phenylethynyl)sulfide reacted with B(C6F5)3 only in a 2 : 1 molar ratio to give a benzothiophene derivative.
authors: Organisch-Chemisches Institut der Universität Münster, Corrensstraße 40, 48149 Münster, Germany. erker@uni-muenster.de.
authors: Christina
authors: C
authors: Eller
authors: Gerald
authors: G
authors: Kehr
authors: Constantin G
authors: CG
authors: Daniliuc
authors: Douglas W
authors: DW
authors: Stephan
authors: Gerhard
authors: G
authors: Erker