1,4‐ and 1,5‐diols undergo cyclodehydration upon treatment with cationic N‐heterocyclic carbene (NHC)–IrIII complexes to give tetrahydrofurans and tetrahydropyrans, respectively. The mechanism was investigated, and a metal‐hydride‐driven pathway was proposed for all substrates, except for very electron‐rich ones. This contrasts with the well‐established classical pathways that involve nucleophilic
Conjugate Reduction of 2-Butene-1,4-diones with LiAlH<sub>4</sub>–SbCl<sub>3</sub>
作者:Shinsei Sayama、Yutaka Inamura
DOI:10.1246/bcsj.64.306
日期:1991.1
The reagent LiAlH4–SbCl3 was found to be more effective for a conjugate reduction of 2-butene-1,4-diones in comparison with the reagent LiAlH4–other metal halides.