Highly substituted 2-amido-furans from Rh(II)-catalyzed cyclopropenations of ynamides.

Highly substituted 2-amido-furans from Rh(II)-catalyzed cyclopropenations of ynamides.
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DOI:
10.1021/ol901860b
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发表时间:
2009-10-01
期刊:
影响因子:
5.2
通讯作者:
Hsung RP
Hsung RP
中科院分区:
化学1区
文献类型:
--
作者:
Li H;Hsung RP

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描述了 Rh(II) 催化的 ynamides 环丙烯化反应。尽管可能不涉及实际的酰胺基-环丙烯中间体,但这些反应提供了高度取代的2-酰胺基-呋喃的容易进入,从而先前构成了[3+2]环加成。还说明了这些从头 2-酰胺基呋喃在 N-束缚分子内 [4 + 2] 环加成中的应用,产生二氢吲哚和四氢喹啉。
Rh(II)-catalyzed cyclopropenations of ynamides are described. Although an actual amido-cylopropene intermediate may not be involved, these reactions provide a facile entry to highly substituted 2-amido-fuans, thereby formerly constituting a [3 + 2] cycloaddition. An application of these de novo 2-amido-furans in N-tethered intramolecular [4 + 2] cycloadditions is also illustrated, leading to dihydroindoles and tetrahydroquinolines.
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