From propargylamides to oxazole derivatives: NIS-mediated cyclization and further oxidation by dioxygen.

From propargylamides to oxazole derivatives: NIS-mediated cyclization and further oxidation by dioxygen.
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DOI：
10.1021/jo5001719
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发表时间：
2014-03
期刊：
The Journal of organic chemistry
影响因子：
--
通讯作者：
Yancheng Hu;Ruxia Yi;Chunxiang Wang;Xiaoyi Xin;Fan Wu;B. Wan
Yancheng Hu;Ruxia Yi;Chunxiang Wang;Xiaoyi Xin;Fan Wu;B. Wan
中科院分区：
其他
文献类型：
--
作者：
Yancheng Hu;Ruxia Yi;Chunxiang Wang;Xiaoyi Xin;Fan Wu;B. Wan

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研究了N-磺酰基炔丙基酰胺碘代环化反应，通过5-exo-dig反应合成了各种恶唑烷和碘代亚烷基二氢恶唑。所得碘代亚烷基二氢恶唑可在分子氧存在下进一步转化为相应的恶唑。
NIS-mediated iodocyclization of N-sulfonyl propargylamides for the synthesis of various oxazolidines and iodoalkylidenedihydrooxazoles via a 5-exo-dig process is developed. The resulting iodoalkylidenedihydrooxazoles can be further transformed into the corresponding oxazoles in the presence of dioxygen.