On the competition between six-membered and five-membered NHC towards alane centered ring expansion

Kajal Balayan,Himanshu Sharma,Kumar Vanka,Sapna Ravindranathan,Rajesh G. Gonnade,Sakya S. Sen

Chemical communications (Cambridge, England)（2023）

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Abstract

The combination of 6-SIDipp·AlH (1) and 5-IDipp resulted in the ring expansion of 6-NHC, while the five-membered NHC remained unchanged, which was subsequently explained by DFT studies. Besides, the substitution chemistry of 1 was also studied with TMSOTf and I, which gave rise to the substitution of a hydride by triflate or iodide ligands.

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