Geetanjali S. Sontakke, K. Pal, Chandra M. R. Volla
Aug 30, 2019
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0
Influential Citations
16
Citations
Journal
The Journal of organic chemistry
Abstract
A rhodium-catalyzed intramolecular denitrogenative transannulation of N-sulfonyl-1,2,3-triazole tethered cyclohexadienones has been achieved for the synthesis of benzofurans and cyclopropa[cd]indole-carbaldehydes in an operationally simple procedure. Remarkably, the reaction pathway is fully dependent on the linker heteroatom (O or N) present between the cyclohexadienone unit and triazole moiety. In the case of O-linked triazoles, a cascade sequence consisting of intramolecular cyclopropanation and rearrangement takes place leading to the formation of benzofurans, while in case of N-linked triazoles, cyclopropa[cd]indole-carbaldehydes were isolated exclusively.