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Functionalized nucleobases are utilized in a wide range of fields; therefore, the development of new synthesis methods is essential for their continued application. With respect to the C 6 -arylation of halopurines, which possess a substituent at the N 7 -position, only a small number of successful cases have been reported, which is predominately a result of large steric hinderance effects. Herein, we report efficient and metal-free C 6 -arylations and S N Ar reactions of N 7 -substituted chloropurines in aromatic and heteroatom nucleophiles promoted by triflimide (Tf 2 NH) in fluoroalcohol.

chemical and pharmaceutical bulletin/chemical and pharmaceutical bulletin

Triflimide-Promoted Nucleophilic &lt;i&gt;C&lt;/i&gt;-Arylation of Halopurines to Access &lt;i&gt;N&lt;/i&gt;&lt;sup&gt;7&lt;/sup&gt;-Substituted Purine Biaryls