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 using 2-substituted oxetan-3-ones.
氧杂环丁烷-3-酮和氮杂环丁烷-3-酮与色胺和色氨酸衍生物的Pictet-Spengler反应可产生高产螺环四氢-β-咔啉。在大多数情况下,分子碘(5摩尔%)是一种有效的催化剂,使用2-取代的氧杂环丁烷-3-酮可观察到高水平的非对映选择性。