[4 + 2] Cycloaromatization of 4-Bis(methylthio)-3-buten-2-one with Active Methylene Ketones: A Simple and Facile Phenol Annulation
作者:Okram Barun、Sukumar Nandi、Kausik Panda、Hiriyakkanavar Ila、Hiriyakkanavar Junjappa
DOI:10.1021/jo020219r
日期:2002.7.1
readily available 4-bis(methylthio)-3-buten-2-one with a variety of cyclic and acyclic active methylene ketones has been reported. Appropriate choice of ketones allows synthesis of diverse frameworks such as dihydroindan, tetrahydronaphthalenes, their higher homologues, dihydro/octahydrophenanthrenes, anthracene, and heteroannulated analogue in high yields with regiocontrol of phenolic functionality.
已经报道了一种新的β-苯酚环化方法,涉及碱诱导的[4C + 2C]环芳烃化,该环化是易于获得的带有各种环状和非环状活性亚甲基酮的4-双(甲硫基)-3-丁烯-2-酮。酮的适当选择允许多样框架如dihydroindan,四氢萘,它们的高级同系物,二氢/ octahydrophenanthrenes,蒽和heteroannulated类似物以高收率和的酚官能团区域控制的合成。