Investigation of the K 4 [Fe(CN) 6 ] mediated mono-and bispalladium-catalyzed cyanation of the benzothioxanthene core
Abstract
The pallado-catalyzed cyanation of benzothioxanthene imide (BTXI) derivatives is explored herein. Once optimized on the monobromo BTXI, mild reaction conditions were successfully applied to the dibromo derivative affording two regioisomers that have been isolated and structurally solved. Additional hydrogen-deuterium exchange experiments were carried out to support a proposed mechanism involving the formation of a five-membered palladacycle intermediate in the bay area. In addition to impact the structural, photo physical and electrochemical properties of the BTXI core, nitrile moieties were successfully used as orthogonal protecting groups thus opening doors to new design principles.
Domains
Chemical Sciences| Origin | Files produced by the author(s) |
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