Synthesis of [4.6] spirocarbocycles: a base-promoted ring-expansion and subsequent I2-mediated regioselective spirocyclization protocol
Nana Fei,
Zongkang Wang,
Peng He
et al.
Abstract:An efficient protocol for the synthesis of [4.6] spirocarbocycles has been developed. This process is realized through the sequential K2CO3-promoted C−C σ-bond cleavage of cyclic ketoesters and an I2-mediated selective...
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