Weiyu Li, Hao Xu and Lei Zhou
Org. Biomol. Chem., 2021,19, 5649-5657
DOI:
10.1039/D1OB00691F,
Paper
A MsOH-catalyzed oxidative cross-coupling of acridans and silyl diazoenolates and a Rh2(OAc)4-catalyzed rearrangement of the resultant diazo products are described. The reactions provide various γ-(9-acridanylidene)-β-keto esters in good yields, which bear an active α-methylene unit for further functionalization.