title: An improved transition-metal-free synthesis of aryl alkynyl sulfides via substitution of a halide at an sp-centre.
abstract: A simple high-yielding preparation of aryl alkynyl sulfides is presented. The reaction of a chloroacetylene with a thiolate salt in the presence of an amine mediator (dimethylamine or N,N'-dimethylethylenediamine) yields the alkynyl sulfides in excellent yields. The alkynyl chloride is easily prepared from the parent alkyne.
authors.affiliation: Department of Chemistry, University College London, 20 Gordon Street, London, WC1H 0AJ, UK. j.wilden@ucl.ac.uk.
authors.forename: Roomi Mohima
authors.initials: RM
authors.lastname: Chowdhury
authors.forename: Jonathan D
authors.initials: JD
authors.lastname: Wilden