deiodination of 2-(iodomethyl)-2-phenyltetrahydrofuran. Stemming from the investigation of the mechanism, we found that the PhSiH3–I2 system selectively promotes diverse cascade transformations from cyclic ethers to acyclic alkyl iodides, and the PhSiH3−N-iodosuccinimide (NIS) system also promotes cascade transformations from cyclic ethers to acyclic alcohols.