Stereoselective Construction of Eight-Membered Oxygen Heterocycles by Brook Rearrangement-Mediated [3 + 4] Annulation
作者:Yuji Sawada、Michiko Sasaki、Kei Takeda
DOI:10.1021/ol0492243
日期:2004.6.1
[reaction: see text] A newly developed strategy for eight-membered oxygen heterocycle construction via [3 + 4] annulation is described. The method involves the combination of beta-substituted acryloylsilanes and enolates of 6-oxacyclohept-2-en-1-one. A unique feature of this annulative approach is its capacity to generate eight-membered ring systems containing useful functionalities for further synthetic
[反应:见正文]描述了一种新的通过[3 + 4]环空法构建八元氧杂环的策略。该方法涉及β-取代的丙烯酰基硅烷和6-氧杂环庚-2-烯-1-酮的烯醇化物的组合。这种环形方法的独特之处在于它能够从容易获得的三碳和四碳组分生成八元环系统的能力,该系统包含有用的功能,可用于进一步的合成精细化。