Access to functionalized thienopyridines via a reagent-capsule-assisted coupling, thiolation and cyclization cascade sequence?

Organic & Biomolecular Chemistry Pub Date: 2016-11-30 DOI: 10.1039/C6OB02351G

Abstract

Thienopyridines and related heterocycles were prepared in a straightforward manner in moderate to good yields and under mild conditions by palladium-catalysed cross-coupling of ortho-fluorinated iodopyridines and terminal alkynes, followed by a reagent-capsule-assisted thiolation cyclization process. By applying paraffin wax capsules to prevent catalyst poisoning and undesired side reactions, the separation and purification processes were reduced.

Graphical abstract: Access to functionalized thienopyridines via a reagent-capsule-assisted coupling, thiolation and cyclization cascade sequence
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