The construction of fully decorated 1,2,3-triazoles has been disclosed via a bimetallic relay-catalyzed cascade process combining azide–alkyne cycloaddition, C(sp2)–H functionalization of 1,2,3-triazoles and isocyanide insertion.

Metal-free TFA promoted arylation/heteroarylation was achieved under mild conditions via the reaction of chloro-derivatives of nitrogen heterocycles [e. g., =CÀ C(Cl)=NÀ ] with electron rich arenes/ heteroarenes. It was also observed that apart from participating in the heteroarylation step, TFA was able to facilitate the hydroarylation/o-arylation process in the same pot affording the carbazole/oxepine fused Nheterocycles. The reaction proceeded with similar efficiency on gram scale.

An efficient and one-pot synthesis of 3,3′-bisbenzofuran derivatives has been developed. The protocol involved the use of a Pd-catalyst and Cu(OAc)2 along with molecular oxygen as the oxidant to afford...

We report here an efficient synthesis of fused bis-indazoles/indazoles via one-pot sequential strategy starting from o-azido aldehyde and amines. This novel method involves sequential formation of 2H-indazole followed by Pd-catalyzed...