oxonium ylides generated from α-oxo gold carbenes were discovered. An efficient synthetic method of 2,5-disubstituted dihydrofuran-3(2H)-ones via gold-catalyzed intermolecular oxidation of the allyl homopropargyl ethers with N-oxide was developed. And the synthetic utility of the current method has been proved by concise formal synthesis of (±)-kumausallene.
                                    发现了由α-氧代
金卡宾产生的氧鎓叶立德的新型 [2,3]-σ 重排。开发了一种有效的 2,5-二取代二氢
呋喃-3(2H)-酮的合成方法,通过
金催化烯丙基高
炔丙基醚与 N-氧化物的分子间氧化。并且通过(±)-kumausallene的简洁形式合成证明了当前方法的合成效用。