Pictet–Spengler reactions of oxetan-3-ones and related heterocycles
作者:Benjamin O. Beasley、Abimbola Alli-Balogun、Guy J. Clarkson、Michael Shipman
DOI:10.1016/j.tetlet.2013.11.077
日期:2014.1
Pictet–Spengler reactions of oxetan-3-ones and azetidin-3-ones with tryptamine and tryptophan derivatives produce spirocyclic tetrahydro-β-carbolines in good yields. Molecular iodine (5 mol %) is an effective catalyst in most cases and high levels of diastereoselectivity are witnessed using2-substituted oxetan-3-ones.